Marine engineering sliding traction extension device and method

Abstract

The present invention discloses a marine engineering sliding traction extension device and method, comprising a wire rope extension component and a tool rope extension component connected thereto; one end of the wire rope extension component is connected to the main lug plate on the cargo at the backyard of the dock, and the other end is connected to one end of the tool rope extension component; the other end of the tool rope extension component is connected to the main lug plate on the transport ship; the wire rope extension component comprises a first pulley group, a second pulley group and a traction wire rope which are sequentially connected to the main lug plate on the cargo through a wire rope; the tool rope extension component comprises a plurality of tool ropes sequentially connected to the second pulley group, and the tool rope at the end is connected to a cylinder tensioning device, and the cylinder tensioning device is connected to the main lug plate on the transport ship. The present invention solves the problem of long-distance traction and transportation of large marine engineering products from the backyard of the dock when the large marine engineering products are launched by sliding.

Description

Technical Field

[0001] The invention relates to a sliding launching technology for large-scale marine engineering products, and more specifically, to a marine engineering sliding traction extension device and method. Background Art

[0002] Due to the limited length of the wharf shoreline, marine engineering products are often not placed directly on the wharf front and directly loaded on board during manufacturing. Instead, the products are placed from the wharf front to the wharf backyard in sequence according to the launch time node. As a result, during the sliding process of the products on board, the products placed on the wharf backyard often have to slide more than 500 meters, and even 1,000 meters. In such a long distance traction, since a multi-door pulley group is required to amplify the traction force, the wire rope is usually wound around the pulley about 20 times. If a fixed-point traction lug is used, the product needs to be equipped with more than 10,000 meters of wire rope for a 500-meter slide. Such a long wire rope is difficult to manufacture. Once the wire rope is partially worn during use, the price of replacing the entire steel wire is also unbearable, which will cause serious loss of resources. In addition, the anchor machine has a limited rope capacity. For a wire rope with a diameter of 30-40mm, the rope capacity is generally within 3,000 meters, which is far less than the demand for 10,000-20,000 meters of wire rope. If considering pre-embedded anchor lugs at different locations of the wharf, these lugs may not be fully applicable to different types of cargo. Alternatively, it is necessary to solve the applicability problem through dense settings, which will greatly increase the economic cost and may interfere with the cargo during cargo sliding or assembly and need to be removed. Summary of the invention

[0003] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a marine engineering sliding traction extension device and method to solve the problem of long-distance traction and transportation of large marine engineering products from the backyard of the dock when they are sliding launched into the water.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A first aspect of the present invention provides a marine engineering sliding traction extension device, comprising a wire rope extension component and a tool rope extension component connected thereto;

[0006] One end of the steel wire rope extension component is connected to the main lug plate on the cargo at the backyard of the wharf, and the other end is connected to one end of the tool rope extension component;

[0007] The other end of the tool rope extension component is connected to the main root lug plate on the transport ship;

[0008] The wire rope extension component comprises a first pulley block, a second pulley block and a traction wire rope which are sequentially connected to the main lug plate on the cargo through the wire rope;

[0009] One end of the traction wire rope is connected to the first pulley group and the second pulley group, and the other end is connected to the anchor windlass at the back yard of the dock;

[0010] The tool rope extension component includes a plurality of tool ropes connected to the second pulley group in sequence, and the tool rope at the end is connected to a cylinder tensioning device, and the cylinder tensioning device is connected to the main root lug plate on the transport ship.

[0011] Preferably, the first pulley group and the second pulley group are connected via a pulley connecting plate.

[0012] Preferably, the tool rope is connected to the second pulley assembly via a conversion connecting plate.

[0013] Preferably, the tool cables are connected via a cable connecting plate.

[0014] Preferably, the cylinder tensioning device is connected to the main root lug plate on the transport ship through a connecting plate.

[0015] The second aspect of the present invention provides a method for extending a marine sliding traction device:

[0016] First, the original traction system is extended by the wire rope extension component in the offshore sliding traction extension device. If the length is sufficient, the second pulley block is directly connected to the main lug plate on the transport ship.

[0017] If the length is not enough, the second pulley block is directly connected to the tool rope extension component, and the tool rope extension component is further connected to the main root lug plate on the transport ship.

[0018] The marine engineering sliding traction extension device and method provided by the present invention have the following beneficial effects:

[0019] 1) Practical and reliable, it adopts two extension methods: wire rope extension and tool rope extension, which can realize the traction and transportation of goods at different positions in front and back of the wharf without affecting the traction force;

[0020] 2) There is no need to drive piles on the dock to bury the anchors. The main root lifting lug can be temporarily installed on the transport ship docked at the dock. The location is flexible, it can be installed when needed, and it is easy to remove after use. The cost is low, which is negligible compared to driving piles on the dock to bury the anchors, and there is no risk of interference with the cargo;

[0021] 3) The splicing operation is simple and can be combined and spliced ​​at will according to the traction distance. When the traction reaches the maximum distance at one time and the wire rope on the anchor windlass is almost exhausted, any section of the tool rope splicing section can be removed, so that the wire rope can be rewound on the anchor windlass drum again, and then the next stage of cyclic traction can be carried out;

[0022] 4) The traction extension section composed of double tool ropes has good stability. With the double-door multi-wheel pulley and double total root lugs, the entire traction system will not twist during traction;

[0023] 5) The force is evenly distributed, and a large-tonnage cylinder tensioning device is used to adjust the length of the double tool cable to ensure that the cumulative error of the extension section can be eliminated when the distance is extended, and the length and force of the double cable are consistent;

[0024] 6) It has a wide range of applications and can be used for the towing and transportation of various types of docks and large marine engineering and steel structure products of different types and weights located at different positions on the docks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the on-site arrangement of the marine engineering sliding traction extension device of the present invention;

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle wire rope extension component;

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure of the tool cable extension component;

[0028] Figure 4 yes Figure 3 Schematic side view of . DETAILED DESCRIPTION

[0029] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Combination Figures 1 to 4 As shown, a marine engineering sliding traction extension device provided by the present invention includes a wire rope extension component 1 and a tool rope extension component 2 connected thereto.

[0031] One end of the wire rope extension component 1 is connected to the main root ear plate I 301 on the cargo 3 at the backyard of the dock, and the other end is connected to one end of the tool rope extension component 2.

[0032] The other end of the tool rope extension component 2 is connected to the main root ear plate II 401 on the transport ship 4.

[0033] The wire rope extension component 1 includes a first pulley group 102, a second pulley group 103 and a traction wire rope 104 which are sequentially connected to the main root ear plate I 301 on the cargo 3 through the wire rope 101.

[0034] One end of the traction wire rope 104 is connected to the first pulley block 102 and the second pulley block 103, and the other end is connected to the anchor windlass 5 at the back yard of the wharf.

[0035] The first pulley group 102 and the second pulley group 103 are connected via a pulley connecting plate 105 .

[0036] The tool rope extension component 2 includes a plurality of tool ropes 201 connected in sequence to the second pulley 103 group. The tool rope 201 at the rear position is connected to a cylinder tensioning device 202, and the cylinder tensioning device 202 is connected to the main root ear plate II 401 on the transport ship 4.

[0037] The tool rope 201 is connected to the second pulley assembly 103 via a conversion connecting plate 203 .

[0038] The tool cables 201 are connected to each other via a cable connecting plate 204 .

[0039] The oil cylinder tensioning device 202 is connected to the main root ear plate II 401 on the transport ship 4 through a connecting plate 205. The connecting plate 205 is connected and fixed to the oil cylinder tensioning device 202 and the main root ear plate II 401 respectively by a clamping shaft plate 206 and a pin 207.

[0040] When used on site, the number of wire rope extension components 1 and tool rope extension components 2 is reasonably selected according to the actual assembly position and weight of the goods 3 on the dock. When the lengths of two parallel groups of tool ropes 201 are inconsistent due to cumulative errors, the cylinder tensioning device 202 can be used to adjust the length to ensure that each group of tool ropes 201 is evenly stressed.

[0041] The principle of the marine engineering sliding traction extension device of the present invention is: for traction over a very long distance, it is not necessary to pre-bury the traction anchor on the dock. It is only necessary to let the transport ship 4 berth at the marine engineering dock, and then set a temporary total root ear plate 401 on the transport ship 4, and then connect the total root ear plate 401 with the tool rope extension component 2 through the connecting plate 205 to achieve the traction and shipment of the backyard goods. The tool rope extension component 2 is provided with a cylinder tensioning device 202. When the double cables are of unequal length, the length of the double cables can be adjusted by adjusting the length of the corresponding cylinder tensioning device 202, and finally the force of the double cables is ensured to be uniform. By connecting the double-door multi-wheel large pulley with the double cables and the double total root ear plates, the stability and anti-twist of the double cables during traction are achieved. For the shorter distance towing on the dock, since there is no need to pull back, only the wire rope on the towing anchor machine and the pulling anchor machine can be used (no tool rope is needed to extend the length), and the two sets of pulleys and connecting plates can be connected in series to achieve a shorter distance towing extension.

[0042] The present invention also provides a method for extending a marine sliding traction device:

[0043] First, the original traction system is extended by the wire rope extension component 1 in the marine engineering sliding traction extension device of the present invention. If the length is sufficient, the second pulley group 103 is directly connected to the main root ear plate II 401 on the transport ship 4.

[0044] If the length is not enough, the second pulley group 103 is directly connected to the tool rope extension component 2, and the tool rope extension component 2 is further connected to the main root ear plate II 401 on the transport ship 4.

[0045] The present invention makes it possible to slide large marine engineering products from the back yard of the dock to the front of the dock for long-distance loading, and to ship them over long distances. A tool rope extension section composed of two groups of tool ropes and a double-door pulley is designed to increase the stability of the traction system, successfully avoid the occurrence of torsion of the traction system during long-distance traction, and keep the wire rope output stable. A tool rope length adjustment device is designed. When the lengths of any group (two) of tool ropes in the tool rope extension section are inconsistent, the length of any one of them can be adjusted by the cylinder tensioning device to make the double tool rope group evenly stressed.

[0046] The present invention can realize the sliding shipment of marine engineering products weighing more than 10,000 tons at any position in front of or behind the wharf, and can extend the original wire rope traction system arbitrarily according to the distance requirements, getting rid of the limitations of the anchor machine rope capacity and wire rope length. It makes it possible to manufacture products in the back yard located at the rear of the wharf, 500 meters or even more than 1,000 meters away from the front of the wharf, and to transport them in batches by sliding.

[0047] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A marine sliding traction extension device, characterized in that: It includes a wire rope extension component and a tool rope extension component connected thereto; One end of the steel wire rope extension component is connected to the main lug plate on the cargo at the backyard of the wharf, and the other end is connected to one end of the tool rope extension component; The other end of the tool rope extension component is connected to the main root lug plate on the transport ship; The wire rope extension component comprises a first pulley block, a second pulley block and a traction wire rope which are sequentially connected to the main lug plate on the cargo through the wire rope; One end of the traction wire rope is connected to the first pulley group and the second pulley group, and the other end is connected to the anchor windlass at the back yard of the dock; The tool rope extension component includes a plurality of tool ropes connected to the second pulley group in sequence, and the tool rope at the end is connected to a cylinder tensioning device, and the cylinder tensioning device is connected to the main root lug plate on the transport ship.

2. The offshore sliding traction extension device according to claim 1 is characterized in that: The first pulley group and the second pulley group are connected via a pulley connecting plate.

3. The offshore sliding traction extension device according to claim 1 is characterized in that: The tool rope is connected to the second pulley assembly through a conversion connecting plate.

4. The offshore sliding traction extension device according to claim 1, characterized in that: The tool cables are connected to each other via a cable connecting plate.

5. The offshore sliding traction extension device according to claim 1, characterized in that: The oil cylinder tensioning device is connected to the main lug plate on the transport ship through a connecting plate.

6. A method for extending a marine sliding traction device, characterized in that: First, the original traction system is extended by the wire rope extension component in the marine sliding traction extension device according to any one of claims 1 to 5. If the length is sufficient, the second pulley block is directly connected to the main lug plate on the transport ship; If the length is not enough, the second pulley block is directly connected to the tool rope extension component, and the tool rope extension component is further connected to the main root lug plate on the transport ship.

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