Hoisting device and hoisting method for a fully revolving crane of a floating dock

Abstract

The present invention discloses a hoisting device and a hoisting method for a fully revolving crane of a floating dock, which relates to the technical field of shipbuilding, and includes a lower trolley crane device and an upper trolley crane device; the lower trolley crane device includes a lower trolley lifting row, a first shackle is arranged at the bottom of each sub-hoisting point, and a plurality of intermediate shackles are used to combine two by two between each group of first shackles into a lower trolley hoisting point, and a second shackle is arranged at each lower trolley hoisting point; the upper trolley crane device includes a combined hoisting beam, lifting lugs are arranged at both ends above the combined hoisting beam, and a shoe hook is arranged in the middle at the bottom. The shoe hook has two hooks opening towards both sides, a steel wire rope or a sling is arranged on each hook, the lower end of each steel wire rope or sling is an upper trolley hoisting point, and a third shackle is arranged at the upper trolley hoisting point. The two parts are hoisted respectively by the specially made lower trolley crane device and the upper trolley crane device, so that the hoisting operation is completed on the premise of using the original lifting lugs and the shipyard's own crane.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly relates to a hoisting device and a hoisting method for a fully rotating crane of a floating dock. Background Art

[0002] During the shipbuilding process, there are hoisting operations for some special large-scale equipment purchased externally during transportation, loading and unloading of ships, and actual ship installation. For large-scale equipment such as fully rotating cranes of floating docks, floating cranes are generally used for hoisting operations. Before the fully rotating crane of the floating dock is delivered from the factory, corresponding performance tests and certification work need to be completed. After being qualified products, they are delivered. Therefore, the fully rotating crane of the floating dock is usually delivered as a whole machine with integrity, and the weight of the whole machine is about 1000T or more.

[0003] However, there are the following problems with the delivery of the whole machine with integrity:

[0004] 1. The weight of the whole machine is relatively heavy, while the maximum lifting capacity of the gantry cranes generally equipped in general shipyards is 600T - 800T, which cannot meet the hoisting of the whole machine. And the cost of renting a floating crane is relatively high, increasing the shipbuilding cost.

[0005] 2. When unloading the fully rotating crane of the floating dock and hoisting it during actual ship installation, a suitable floating crane cannot be rented. Waiting for a suitable floating crane will inevitably increase the shipbuilding cycle.

[0006] 3. When using a floating crane, the crane needs to be hoisted onto the top deck of the floating dock (the height from the top deck to the bottom plate of the floating box is about 30.5m). During the hoisting operation, the floating dock needs to be towed into the harbor basin. The floating crane selects a suitable anchoring position in the harbor basin according to its hoisting height and slewing radius for hoisting operations. However, due to the large size of the floating dock itself (the ship length is about 350.4m, and the ship width is about 95.5m), and the size of the rented floating crane itself and the suitable anchoring position also occupy a large working space, the space of the shipyard harbor basin cannot meet the requirements of its hoisting operation.

[0007] 4. When the crane manufacturer makes and loads the ship, the lifting lugs are arranged only according to the cranes and rigging equipped in its own factory, without considering the characteristics of the lifting equipment in the shipyard and the configuration of sling rigging, etc. after delivery; the shackles, wire ropes, etc. required for the hoisting of the crane are not equipped in the factory, and other methods have to be found to solve the hoisting work of the fully rotating crane of the floating dock. Summary of the Invention

[0008] The purpose of the present invention is to provide a hoisting device and a hoisting method for a fully rotating crane of a floating dock. By dividing the fully rotating crane of the floating dock into a gantry part and a turntable part, and then hoisting the two parts respectively through a special lower trolley hoisting device and an upper trolley hoisting device, the hoisting operation is completed on the premise of using the original lifting lugs and the cranes of the shipyard itself, thereby reducing the production cost and improving the construction period.

[0009] To achieve the above object, the technical solution of the present invention is as follows:

[0010] A hoisting device for a fully rotating crane of a floating dock, comprising a lower trolley hoisting device and an upper trolley hoisting device; the lower trolley hoisting device includes a lower trolley sling, and a plurality of sub-hoisting points are arranged on the lower trolley sling. A first shackle is arranged at the bottom of each sub-hoisting point. All the first shackles are evenly divided into two groups. Between each group of the first shackles, several intermediate shackles or slings are used to merge them into a lower trolley hoisting point in pairs, and a second shackle is arranged on each lower trolley hoisting point; the upper trolley hoisting device includes a combined hoisting beam, and lifting lugs are arranged at both ends above the combined hoisting beam, and a yuanbao hook is arranged in the middle at the bottom. The yuanbao hook has two hooks opening to both sides. A steel wire rope or a sling is arranged on each hook, and the lower end of each steel wire rope or sling is an upper trolley hoisting point, and a third shackle is arranged on the upper trolley hoisting point.

[0011] Among them, between the two second shackles, they are merged into a lower trolley total hoisting point through a sling or a steel wire rope, and a fourth shackle is arranged on the lower trolley total hoisting point. The fourth shackle is divided into two sub-hoisting points through split ropes, and a fifth shackle is arranged on each sub-hoisting point.

[0012] Among them, the fourth shackle and the yuanbao hook are connected through a rope loop.

[0013] Among them, the lower trolley sling includes a pulley block, and the pulley block is formed by matching a plurality of fixed pulleys and movable pulleys, and each movable pulley is a sub-hoisting point.

[0014] Among them, the pulley block is a single-rope series pulley block.

[0015] Among them, two groups of the pulley blocks are arranged, and the two groups of pulley blocks are symmetrically arranged and connected by the same series rope. The sub-hoisting points of the two groups of pulley blocks are also connected into a whole through several intermediate shackles at the bottommost position.

[0016] A hoisting method using the above hoisting device includes the following steps: S1. Hoisting of the gantry part: 1) Hook the lower trolley hoisting device on the lower trolley, and hook the lifting lugs of the upper trolley hoisting device on two upper trolleys respectively; 2) Hook the two second shackles on the gantry lifting lugs on one side of the gantry, and hook the third shackle on the gantry lifting lug 11 on the other side of the gantry; 3) Control the hoisting of the gantry through the upper trolley and the lower trolley at the same time; S2. Hoisting of the turntable part: 1) Install the fourth shackle and the fifth shackle on the second shackle, then hook the lower trolley hoisting device on the lower trolley, and hook the lifting lugs of the upper trolley hoisting device on two upper trolleys respectively; 2) Hook the two fifth shackles on the turntable lifting lugs on one side of the turntable part, and hook the third shackle on the turntable lifting lugs on the other side of the turntable part; 3) Control the hoisting of the turntable through the upper trolley and the lower trolley at the same time.

[0017] Among them, a rope loop is arranged between the second step and the third step in S2, and both ends of the rope loop are respectively arranged on the fourth shackle and the ingot hook.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] 1. By arranging a number of sub-lifting points on the lower trolley lifting row, a first shackle is arranged at the bottom of each sub-lifting point, all the first shackles are evenly divided into two groups, and each group of first shackles is combined into a lower trolley lifting point in pairs through a number of intermediate shackles or sling straps, and a second shackle is arranged on each lower trolley lifting point, so that the multi-lifting points of the gantry crane and the small-tonnage lifting row are combined into an equivalent large-sized lifting point through the combination of intermediate shackles or sling straps, and are connected to the equipment lifting point through large-tonnage shackles, thus eliminating the need to rent a floating crane to complete the lifting operation and saving a large amount of construction costs.

[0020] 2. The hooks of the gantry crane are connected through a combined lifting beam, combined into a single large-tonnage hook and connected to the equipment lifting point, thus eliminating the need to rent a floating crane to complete the lifting operation and saving a large amount of construction costs.

[0021] 3. Connect the lower trolley hoisting device and the upper trolley hoisting device through a rope loop to reduce the distance between the two hooks and meet the hoisting requirements of the full-rotation crane.

[0022] The hoisting device and hoisting method of the full-rotation crane of the floating dock of the present invention divide the full-rotation crane of the floating dock into a gantry part and a turntable part, and then respectively hoist the two parts through a specially made lower trolley hoisting device and an upper trolley hoisting device, thus completing the hoisting operation on the premise of using the original lifting lugs and the shipyard's own crane, thereby reducing the production cost and improving the construction period. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of hoisting the gantry part using a gantry crane;

[0024] Figure 2 It is Figure 1 View A in

[0025] Figure 3 It is Figure 1 View B in

[0026] Figure 4 It is Figure 2 Schematic diagram of the structure of the lower trolley hoisting device in

[0027] Figure 5 It is a schematic diagram of hoisting the turntable part using a gantry crane;

[0028] Figure 6 is Figure 5 View C in the figure;

[0029] Figure 7 is Figure 5 View D in the figure;

[0030] Figure 8 is Figure 6 Schematic structural diagram of the lower trolley crane device;

[0031] Figure 9 is Figure 8 Side view;

[0032] Figure 10 Schematic position diagram of the rope loop;

[0033] Figure 11 is Figure 10 Schematic position diagram of the rope loop and the ingot hook in the figure.

[0034] In the figure, 1 is the gantry part, 11 is the gantry lifting lug, 2 is the turntable part, 21 is the turntable lifting lug, 3 is the lower trolley crane device, 31 is the lower trolley lifting row, 311 is the fixed pulley, 312 is the movable pulley, 313 is the single rope, 32 is the first shackle, 33 is the intermediate shackle, 331 is the first intermediate shackle, 332 is the second intermediate shackle, 34 is the sling, 35 is the second shackle, 36 is the fourth shackle, 37 is the split rope, 38 is the fifth shackle, 4 is the upper trolley crane device, 41 is the combined lifting beam, 411 is the lifting lug, 412 is the ingot hook, 42 is the steel wire rope, 43 is the third shackle, 44 is the rope loop. Detailed implementation method

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] All orientations mentioned in this specification are based on the orientations when the lifting device and the lifting method of a floating dock full-rotation crane of the present invention are working properly, without limiting their orientations during storage and transportation, only representing relative positional relationships and not absolute positional relationships.

[0037] The total weight of the floating dock full-rotation crane is more than 1000T. For the convenience of lifting, the equipment is divided into two parts, namely the gantry part 1 and the turntable part 2 for supply. The weights of the two parts respectively meet the lifting capacity of the gantry crane equipment after arriving at the shipyard. However, the manufacturer of the gantry part 1 and the turntable part 2 only arranges the lifting lugs according to the cranes and riggings that are matched within the factory before supply, and four large-tonnage lifting lugs are respectively set for lifting operations.

[0038] Such as Figure 1 and Figure 5As shown together, the four large-tonnage lifting lugs of the gantry part 1 are the gantry lifting lugs 11, which are respectively located at the four corners, and the four large-tonnage lifting lugs of the turntable part 2 are the turntable lifting lugs 21, which are respectively located at the four corners of the truss.

[0039] A hoisting device for a fully revolving crane of a floating dock, comprising a lower trolley hoisting device 3 and an upper trolley hoisting device 4. The trolley hoisting device 3 is hooked on the lower trolley of the gantry crane, and the upper trolley hoisting device 4 is hooked on the two upper trolleys of the gantry crane.

[0040] As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown together, the lower trolley hoisting device 3 includes a lower trolley lifting row 31, and a number of sub-hoisting points are arranged on the lower trolley lifting row 31. In order to ensure the balanced force of each sub-hoisting point, it is preferably that the lower trolley lifting row 31 includes a pulley block, and the pulley block is formed by matching a number of fixed pulleys 311 and movable pulleys 312, and each movable pulley 312 is a sub-hoisting point. The pulley block is a single-rope string pulley block, that is, all the fixed pulleys 311 and movable pulleys 312 are connected in series by a single rope 313, so as to realize the balanced force of all sub-hoisting points.

[0041] In this embodiment, seven movable pulleys 312 are provided. In actual application, it can be designed as eight or other numbers, and this embodiment does not limit this. Although seven movable pulleys 312 are provided in this embodiment, it does not mean that each time hoisting is carried out, the lower trolley hoisting device 3 uses seven sub-hoisting points. The number of sub-hoisting points that can participate in work selectively according to the weight to be hoisted can be determined. As Figure 2 shown, when hoisting the gantry part 1 in this embodiment, the selected sub-hoisting points to participate are six, and as Figure 6 shown, when hoisting the turntable part 2, the selected sub-hoisting points to participate are four. Through reasonable calculation, the participation quantity is determined, and the present invention does not limit this.

[0042] A first shackle 32 is hoisted at the bottom of each sub-hoisting point, and all the first shackles 32 are evenly divided into two groups. Between each group of first shackles 32, they are combined into one lower trolley hoisting point through a number of intermediate shackles or slings in pairs.

[0043] As Figure 2 and Figure 4 As shown together, when hoisting the gantry part 1, the selected sub-hoisting points to participate are six. Therefore, every three sub-hoisting points are in a group. The three first shackles 32 in each group are first combined into two second intermediate shackles 332 through four first intermediate shackles 331, and the two second intermediate shackles 332 are combined into one lower trolley hoisting point after being folded in half by a sling 34.

[0044] A second shackle 35 is provided at the lifting point of the lower trolley. Since all the first shackles 32 are evenly divided into two groups, two second shackles 35 are provided. The two second shackles 35 are respectively hooked on two gantry lifting lugs 11 on one side of the gantry part 1.

[0045] In this embodiment, the first shackle 32 is an 85T shackle; two of the four first intermediate shackles 331 on the inner side are 55T shackles, and the two on the outer side are 85T shackles; the second intermediate shackle 332 is a 120T shackle; the second shackle 35 is a 200T shackle. In actual application, shackles of other weights can be designed according to needs.

[0046] As Figure 3 shown, the upper trolley lifting device 4 includes a combined lifting beam 41. At both ends above the combined lifting beam 41, there are lifting lugs 411, and in the middle of the bottom, there is a semi-circular hook 412. The semi-circular hook 412 has two hooks opening to both sides. A steel wire rope 42 or a sling is provided on each hook. The lower end of each steel wire rope 42 or sling is an upper trolley lifting point, and a third shackle 43 is provided at the upper trolley lifting point. The two third shackles 43 are respectively hooked on two gantry lifting lugs 11 on the other side of the gantry part 1.

[0047] As Figure 5 、 Figure 6 、 Figure 7 and Figure 8 collectively shown, the hoisting turntable part 2 is basically the same as the hoisting gantry part 1. The only difference is that the gantry turntable lifting lug 21 of the turntable part 2 is arranged on the truss. In order to avoid interference, the lower trolley lifting points should be combined into a total lower trolley lifting point first and then the ropes 37 should be divided to reduce interference during hoisting. In addition, because the center of gravity of the turntable part 2 is higher than the lifting point, if the structure of the hoisting gantry part 1 is directly used for hoisting, it will cause instability.

[0048] As Figure 8 and Figure 9 collectively shown, between the two second shackles 35, they are folded and combined by a sling or a steel wire rope into a total lower trolley lifting point. A fourth shackle 36 is provided at the total lower trolley lifting point. The fourth shackle 36 is divided into two sub-lifting points through the ropes 37, and a fifth shackle 38 is provided at each sub-lifting point.

[0049] Because in this embodiment, when hoisting the turntable part 2, the number of participating sub-lifting points is four, so each group has two sub-lifting points. The first shackles 32 at the bottoms of the two sub-lifting points can be combined into a second shackle 35 only through one intermediate shackle 33.

[0050] Here, the first shackle 32 is a 35T shackle; the intermediate shackle 33 is a 120T shackle; the second shackle 35 is a 150T shackle; the fifth shackle 38 is a 200T shackle. In actual application, shackles of other weights can be designed according to needs.

[0051] As Figure 5 shown, the fourth shackle 36 and the ingot hook 412 are connected by a rope loop 44. Before the ingot hook 412 hangs the steel wire rope / sling, the rope loop 44 is sleeved on the straight handle position of the ingot hook 412, and the other end is hooked on the fourth shackle 36.

[0052] Embodiment 2:

[0053] As Figure 9 shown, this embodiment is basically the same as Embodiment 1. The only difference is that, in order to more stably distribute the force of the lower trolley hoisting device 3 on the lower trolley hoisting row 31, two sets of pulley blocks are provided. The two sets of pulley blocks are symmetrically arranged on the lower trolley hoisting row 31, and the structures connected to the bottoms of the two sets of pulley blocks are the same. Finally, the bottoms are all connected to the fifth shackle 38.

[0054] Of course, when hoisting the gantry part 1, the bottom structures of the two sets of pulley blocks are combined and connected to the second shackle 35.

[0055] Embodiment 3:

[0056] As Figure 1 - Figure 11 collectively shown, a hoisting method using the above hoisting device includes the following steps:

[0057] S1. Hoisting the gantry part 1.

[0058] 1) Hook the lower trolley hoisting device 3 on the lower trolley, and hook the lifting lugs 411 of the upper trolley hoisting device 4 on two upper trolleys respectively;

[0059] 2) Hook two second shackles 35 on the gantry lifting lugs 11 on one side of the gantry part 1, and hook the third shackle 43 on the gantry lifting lugs 11 on the other side of the gantry part 1;

[0060] 3) Control the hoisting of the gantry part 1 by the upper trolley and the lower trolley simultaneously;

[0061] S2. Hoisting the turntable part.

[0062] 1) Install the fourth shackle 36 and the fifth shackle 38 on the second shackle 35, then hook the lower trolley hoisting device 3 on the lower trolley, and hook the lifting lugs of the upper trolley hoisting device 4 on two upper trolleys respectively;

[0063] 2) Hook two fifth shackles 38 on the turntable lifting lugs 21 on one side of the turntable part 2, and hang the third shackle 43 on the turntable lifting lugs 21 on the other side of the turntable part 2;

[0064] 3) A rope loop 44 is provided, and the two ends of the rope loop 44 are respectively arranged between the fourth shackle 36 and the ingot hook 412.

[0065] 4) By hoisting the turntable part 2 with the upper trolley and the lower trolley simultaneously.

[0066] The hoisting device and method of the full slewing crane of a floating dock according to the present invention divide the full slewing crane of the floating dock into a gantry part and a turntable part, and then hoist the two parts respectively through a specially made lower trolley hoisting device and an upper trolley hoisting device, thereby completing the hoisting operation on the premise of using the original lifting lugs and the shipyard's own crane, thus reducing the production cost and improving the construction period.

[0067] Certainly, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A hoisting device for a fully revolving crane of a floating dock, characterized in that: It includes a lower trolley crane device and an upper trolley crane device; The lower trolley crane device includes a lower trolley lifting row, and a number of sub-lifting points are arranged on the lower trolley lifting row. A first shackle is arranged at the bottom of each sub-lifting point. All the first shackles are evenly divided into two groups. Between each group of the first shackles, they are combined into a lower trolley lifting point in pairs through a number of intermediate shackles or slings. A second shackle is arranged on each lower trolley lifting point; The upper trolley crane device includes a combined lifting beam. Lifting lugs are arranged at both ends above the combined lifting beam, and a shoe hook is arranged in the middle at the bottom. The shoe hook has two hooks opening to both sides. A steel wire rope or a sling is arranged on each hook. The lower end of each steel wire rope or sling is an upper trolley lifting point, and a third shackle is arranged on the upper trolley lifting point; Between the two second shackles, they are combined into a lower trolley total lifting point through a sling or a steel wire rope. A fourth shackle is arranged on the lower trolley total lifting point. The fourth shackle is divided into two sub-lifting points through a split rope, and a fifth shackle is arranged on each sub-lifting point; The lower trolley lifting row includes a pulley block, and the pulley block is formed by matching a number of fixed pulleys and movable pulleys. Each movable pulley is a sub-lifting point.

2. The hoisting device of a fully rotating crane for a floating dock according to claim 1, characterized in that: The fourth shackle is connected to the shoe hook through a rope loop.

3. The hoisting device of a fully revolving crane on a floating dock according to claim 1, characterized in that: The pulley block is a single-rope series pulley block.

4. The hoisting device of a floating dock full-rotation crane according to claim 3, characterized in that: Two sets of the pulley blocks are provided. The two sets of pulley blocks are symmetrically arranged and connected by the same series rope. The sub-lifting points of the two sets of pulley blocks are also connected into a whole through a number of intermediate shackles at the bottommost position.

5. A hoisting method using the hoisting device according to any one of claims 1-4, characterized in that: It includes the following steps: S1. Hoisting of the gantry part, 1) Hook the lower trolley crane device on the lower trolley, and hook the lifting lugs of the upper trolley crane device on two upper trolleys respectively; 2) Hook the two second shackles on the gantry lifting lugs on one side of the gantry, and hook the third shackle on the gantry lifting lug (11) on the other side of the gantry; 3) Control the hoisting of the gantry through the upper trolley and the lower trolley at the same time; S2. Hoisting of the turntable part, 1) Install the fourth shackle and the fifth shackle on the second shackle, then hook the lower trolley crane device on the lower trolley, and hook the lifting lugs of the upper trolley crane device on two upper trolleys respectively; 2) Hook the two fifth shackles on the turntable lifting lugs on one side of the turntable part, and hook the third shackle on the turntable lifting lug on the other side of the turntable part; 3) Control the hoisting of the turntable through the upper trolley and the lower trolley at the same time.

6. The hoisting method according to claim 5, characterized in that: A rope loop is arranged between step 2) and step 3) in S2, and both ends of the rope loop are arranged on the fourth shackle and the shoe hook respectively.

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