Device for preventing double ropes of deepwater engineering ship from twisting

Abstract

The utility model discloses a device for preventing double ropes of a deepwater engineering ship from twisting, which comprises a ship main body and a main crane, the main crane is arranged on the ship main body, a lifting arm of the main crane is connected with a crane pulley box through a lifting rope, the crane pulley box is provided with a lifting hook, the lifting hook is connected with a lifting rigging, and the lifting rigging is connected with the lifting rope. The hoisting rigging is connected with an installation structure so as to hoist the installation structure, the crane pulley box is connected with a damping wing plate, and the damping wing plate is used for preventing the hoisting rope from being twisted when the hoisting rope hoists the installation structure. According to the device for preventing the double ropes of the deepwater engineering ship from twisting, due to the fact that the damping wing plate is connected to the crane pulley box, the lifting ropes are prevented from twisting when a mounting structure is lifted and placed, enough space is reserved on the crane pulley box to be used for being connected with the damping wing plate, the damping wing plate is prevented from interfering with other parts, the damping wing plate is arranged downwards, and the damping effect is good. And the structure is simple, the prefabrication cost is low, and the construction efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of marine engineering, and in particular relates to a device for preventing double ropes of a deepwater engineering vessel from twisting. Background Art

[0002] When installing underwater structures, a ship-mounted crane is typically used to lift the structure and then lower it to the seabed. For submerged structures that are particularly heavy, a dual-rope mode of ship-mounted hoisting is required.

[0003] When the hook reaches a certain water depth, it will be subjected to lateral torsional forces, causing the two ropes to twist, thus damaging the ropes. The longer the main hook is lowered, the more obvious the twisting phenomenon will be. Twisting of the ropes not only increases wear and tear, but also increases the safety risks of the lifting operation.

[0004] Therefore, it is urgent to design a device to prevent the double ropes of deep-water engineering vessels from twisting, so as to solve the above-mentioned problem of twisting during double rope lifting. Utility Model Content

[0005] In order to solve the technical problem mentioned in the background technology that the "twisting" of the lifting rope not only aggravates wear and consumption, but also increases the safety risk of the lifting operation, a device is provided to prevent the double ropes of deep-water engineering vessels from twisting, so as to solve the problem of twisting during double-rope lifting.

[0006] To achieve the above-mentioned purpose, the specific technical solution of the device for preventing the twisting of double ropes of deepwater engineering vessels of the present invention is as follows:

[0007] A device for preventing double ropes of a deepwater engineering vessel from twisting comprises a vessel body and a main crane. The main crane is arranged on the vessel body. The boom of the main crane is connected to a crane pulley box via a lifting rope. The crane pulley box is provided with a lifting hook, which is connected to a lifting rigging. The lifting rigging is connected to an installation structure for lifting and lowering the installation structure. A damping wing plate is connected to the crane pulley box to prevent the lifting rope from twisting when lifting and lowering the installation structure.

[0008] Furthermore, the damping wing plate includes a first damping wing plate and a second damping wing plate, and the first damping wing plate and the second damping wing plate are symmetrically connected to the crane pulley box.

[0009] Furthermore, a first connecting member and a second connecting member are symmetrically connected to the crane pulley box, the first damping wing plate is connected to the first connecting member, and the second damping wing plate is connected to the second connecting member.

[0010] Furthermore, the first connecting member and the second connecting member are both L-shaped, and the first connecting member and the second connecting member are both fixedly connected to the crane pulley box.

[0011] Furthermore, the first damping wing plate and the second damping wing plate are connected to the first connecting member and the second connecting member respectively by bolts, so as to fix or remove the first damping wing plate and the second damping wing plate.

[0012] Furthermore, a crane pulley box is vertically connected to a hook away from one end of the lifting rope, and both ends of the hook are connected to lifting rigging.

[0013] Furthermore, the first damping wing plate and the second damping wing plate are both arranged on both sides of the crane pulley box along the vertical direction.

[0014] Furthermore, a lifting rope is wound and abutted on the crane pulley box, and a limiting plate is provided on the crane pulley box to limit the sliding of the lifting rope.

[0015] Furthermore, the limiting plate includes a first limiting plate and a second limiting plate, and the first limiting plate and the second limiting plate are arranged on the crane pulley box at intervals.

[0016] Furthermore, the first limiting plate and the second limiting plate are both arranged along the circumference direction of the crane pulley box.

[0017] The device for preventing double ropes of deepwater engineering vessels from twisting has the following advantages:

[0018] By connecting a damping wing plate to the crane pulley box, the hoist rope is prevented from twisting when the installation structure is lowered. Sufficient space is reserved on the crane pulley box for connecting the damping wing plate to prevent interference between the damping wing plate and other components. The damping wing plate is arranged downward to increase the damping dissipation effect on the seawater flow field. This application is suitable for marine engineering ship cranes to install large deep-water structures in double-rope lifting mode, reducing the risk of the hook twisting during unloading, enhancing the offshore construction capacity of existing ship resources, and improving competitiveness in the field of deep-water large-scale structure installation. It has a simple structure, low prefabrication cost, and high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the results of the device for preventing the twisting of double ropes of a deep-water engineering vessel during the lowering process of a structure;

[0020] Figure 2 This is a left side view of the device for preventing double ropes from twisting on deepwater engineering vessels according to the present invention;

[0021] Figure 3 This is a right side view of the device for preventing double ropes of a deepwater engineering vessel from twisting according to the utility model.

[0022] Description of the marks in the figure:

[0023] 1. Ship body; 2. Main crane; 3. Boom; 4. Lifting rope; 5. Crane pulley box; 6. Lifting hook; 7. Lifting rigging; 8. Mounting structure; 9. First damping wing plate; 10. Second damping wing plate; 11. First connecting member; 12. Second connecting member; 13. First limit plate; 14. Second limit plate. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0025] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0026] Please refer to the attached Figure 1 To the attached Figure 3 The utility model describes a device for preventing double ropes of a deep-water engineering vessel from twisting.

[0027] like Figure 1 As shown, the device for preventing the double ropes of a deepwater engineering vessel from twisting in the present invention includes a vessel body 1 and a main crane 2. The main crane 2 is arranged on the vessel body 1. The boom 3 of the main crane 2 is connected to a crane pulley box 5 via a lifting rope 4. The crane pulley box 5 is provided with a hook 6, and a lifting rigging 7 is connected to the hook 6. The lifting rigging 7 is connected to an installation structure 8 for lifting the installation structure 8. A damping wing is connected to the crane pulley box 5 to prevent the rope 4 from twisting when lifting the installation structure 8. By connecting the damping wing to the crane pulley box 5, the rope 4 is prevented from twisting when lifting the installation structure 8. Sufficient space is reserved on the crane pulley box 5 for connecting the damping wing to prevent interference between the damping wing and other components. The damping wing is arranged downward to increase the damping and dissipation effect on the seawater flow field. This application is suitable for marine engineering ship cranes to carry out the installation of deep-water large structures in double-rope lifting mode, reducing the risk of the hook 6 twisting during unloading, enhancing the offshore construction capabilities of existing ship resources, and improving competitiveness in the field of deep-water large structure installation. It has a simple structure, low prefabrication cost, and high construction efficiency.

[0028] Further, if Figure 2 and Figure 3 As shown, the damping wing plate includes a first damping wing plate 9 and a second damping wing plate 10, and the first damping wing plate 9 and the second damping wing plate 10 are symmetrically connected to the crane pulley box 5; the crane pulley box 5 is symmetrically connected with a first connecting member 11 and a second connecting member 12, the first damping wing plate 9 is connected to the first connecting member 11, and the second damping wing plate 10 is connected to the second connecting member 12; the first connecting member 11 and the second connecting member 12 are both L-shaped, and the first connecting member 11 and the second connecting member 12 are both fixedly connected to the crane pulley box 5.

[0029] In this embodiment, preferably, the first damping wing plate 9 and the second damping wing plate 10 are both rectangular, and the first damping wing plate 9 and the second damping wing plate 10 are symmetrically connected on both sides of the crane pulley box 5 to increase the resistance of the crane pulley box 5 in the water, so as to prevent the installation structure 8 from twisting when it is unloaded after installation, thereby affecting the recovery work.

[0030] The first connecting member 11 and the second connecting member 12 are symmetrically welded on both sides of the crane pulley box 5. Preferably, the first connecting member 11 and the second connecting member 12 have the same shape and size, are L-shaped, and are symmetrical about the hook 6 axis; the first damping wing plate 9 is fixed to the crane pulley box 5 through the first connecting member 11, and the second damping wing plate 10 is fixed to the crane pulley box 5 through the second connecting member 12.

[0031] Further, if Figure 1 As shown, the first damping wing plate 9 and the second damping wing plate 10 are respectively connected to the first connecting member 11 and the second connecting member 12 by bolts to fix or remove the first damping wing plate 9 and the second damping wing plate 10; the crane pulley box 5 is vertically connected to the hook 6 at one end away from the lifting rope 4, and both ends of the hook 6 are connected to the lifting rigging 7; the first damping wing plate 9 and the second damping wing plate 10 are both arranged on both sides of the crane pulley box 5 in the vertical direction.

[0032] In this embodiment, the first damping wing plate 9 is connected to the first connecting member 11 by bolts, and the second damping wing plate 10 is connected to the second connecting member 12 by bolts, which facilitates the removal of the first damping wing plate 9 and the second damping wing plate 10. After the device is recovered, the first damping wing plate 9 and the second damping wing plate 10 can be separated from the crane pulley box 5 by rotating the bolts in the opposite direction, thereby facilitating recovery.

[0033] Preferably, a hook 6 is vertically connected to the crane pulley box 5. By adding a first damping wing plate 9 and a second damping wing plate 10 to the crane pulley box 5, the resistance of the crane pulley box 5 and the hook 6 is increased, and motion damping is provided for the crane pulley box 5 and the hook 6, thereby preventing the double ropes from twisting due to the rotation of the crane pulley box 5 and the hook 6, thereby ensuring the smooth completion of the installation work.

[0034] The first damping wing plate 9 and the second damping wing plate 10 are both arranged vertically, which can increase the damping and dissipation effect of the first damping wing plate 9 and the second damping wing plate 10 on the seawater flow field and reduce the risk of twisting during unloading.

[0035] Further, if Figure 1 and Figure 2 As shown, a lifting rope 4 is wound and abutted on the crane pulley box 5, and a limit plate is provided on the crane pulley box 5 to limit the sliding of the lifting rope 4; the limit plate includes a first limit plate 13 and a second limit plate 14, and the first limit plate 13 and the second limit plate 14 are arranged at intervals on the crane pulley box 5; the first limit plate 13 and the second limit plate 14 are both arranged along the circumference direction of the crane pulley box 5.

[0036] In this embodiment, preferably, one end of the lifting rope 4 extends from one side of the boom 3 and passes through the crane pulley box 5, and the protruding end of the lifting rope 4 is connected to the boom 3, thereby realizing double-rope lifting operation, and the crane pulley box 5 is provided with a first limit plate 13 and a second limit plate 14 at intervals to realize sliding limitation of the lifting rope 4.

[0037] Preferably, the first limiting plate 13 and the second limiting plate 14 are both arranged along the circumference direction of the crane pulley box 5 so that the lifting rope 4 can be stably abutted against the crane pulley box 5.

[0038] The working principle of the device for preventing the double ropes of deep-water engineering vessels from twisting in the utility model is as follows:

[0039] When the hook 6 is in a normal working condition in the marine environment, it will be subjected to the effect of flow load, and the rope 4 will be subjected to tension. The torsional torque generated by the tension will cause the crane pulley box 5 to rotate. During the rotation process of the crane pulley box 5, the first damping wing plate 9 and the second damping wing plate 10 fully interact with the surrounding seawater, changing the hydrodynamic characteristics of the hook 6 and playing a damping and dissipating role in the rotational motion of the hook 6, thereby reducing the rotation angle of the crane pulley box 5 and reducing the risk of twisting. During the installation stage, the first damping wing plate 9 and the second damping wing plate 10 also play a role in positioning and stabilizing the entire device, facilitating the overall lifting of the device.

[0040] Based on the device for preventing the twisting of the double ropes of deep-water engineering vessels, the utility model prevents the twisting of the hoist rope 4 when the installation structure 8 is hoisted by connecting the first damping wing plate 9 and the second damping wing plate 10 to the crane pulley box, and reserves sufficient space on the crane pulley box 5 for connecting the first damping wing plate 9 and the second damping wing plate 10 to prevent the first damping wing plate 9 and the second damping wing plate 10 from interfering with other parts. The first damping wing plate 9 and the second damping wing plate 10 are arranged downward to increase the damping dissipation effect on the seawater flow field. The present application is suitable for marine engineering ship cranes to carry out the installation of deep-water large structures in the double-rope lifting mode, reduce the risk of twisting during unloading, enhance the offshore construction capacity of existing ship resources, and improve the competitiveness in the field of deep-water large structure installation. It has a simple structure, low prefabrication cost and high construction efficiency.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A device for preventing double ropes of a deepwater engineering vessel from twisting, characterized in that: It includes a ship body and a main crane. The main crane is arranged on the ship body. The boom of the main crane is connected to the crane pulley box through a lifting rope. The crane pulley box is provided with a hook. The hook is connected to a lifting rigging. The lifting rigging is connected to the installation structure to lift the installation structure. The crane pulley box is connected with a damping wing plate. The damping wing plate is used to prevent the lifting rope from twisting when lifting the installation structure.

2. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 1 is characterized in that: The damping wing plate comprises a first damping wing plate and a second damping wing plate, and the first damping wing plate and the second damping wing plate are symmetrically connected to the crane pulley box.

3. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 2, characterized in that: A first connecting piece and a second connecting piece are symmetrically connected to the crane pulley box, the first damping wing plate is connected to the first connecting piece, and the second damping wing plate is connected to the second connecting piece.

4. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 3 is characterized in that: The first connecting member and the second connecting member are both L-shaped, and are both fixedly connected to the crane pulley box.

5. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 3 is characterized in that: The first damping wing plate and the second damping wing plate are connected to the first connecting member and the second connecting member respectively through bolts, so as to fix or remove the first damping wing plate and the second damping wing plate.

6. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 1, characterized in that: The crane pulley box is vertically connected to a hook at one end away from the lifting rope, and both ends of the hook are connected to lifting rigging.

7. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 5, characterized in that: The first damping wing plate and the second damping wing plate are both arranged on both sides of the crane pulley box along the vertical direction.

8. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 7, characterized in that: A lifting rope is wound and abutted on the crane pulley box, and a limiting plate is provided on the crane pulley box to limit the sliding of the lifting rope.

9. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 8, characterized in that: The limiting plate includes a first limiting plate and a second limiting plate, and the first limiting plate and the second limiting plate are arranged on the crane pulley box at intervals.

10. The device for preventing double ropes of a deepwater engineering vessel from twisting according to claim 9, characterized in that: The first limiting plate and the second limiting plate are both arranged along the circumference direction of the crane pulley box.

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