Ship main engine lifting device
By designing a "T" shape lifting structure that uses gantry to lift the trolley and the trolley, combined with the lifting device of the pulley and wire rope, the problems of limited load load and insufficient lifting height during lifting of large ship main engines are solved, and a safe and efficient overall lifting of the ship main engine is achieved.
Patent Information
- Application Number
- CN202411727409.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-04-08
AI Technical Summary
When hoisting the whole machine of a large ship main machine, the load of the existing gantry crane is limited, and the use of the car hook alone or at the same time cannot meet the lifting requirements. The length direction of the ship main machine is 90 degrees from the main beam of the gantry crane, which increases the difficulty of lifting.
A complete machine hoisting device for ship main engine is designed. The gantry crane and the upper trolley are placed on the main beam of the gantry crane. The "T" shaped structure of the main beam, auxiliary beam and lower beam, combined with the design of the pulley and wire rope, the height reduction of the lifting device and the lifting capacity are achieved.
This device can effectively utilize the lifting capacity of the existing gantry crane to realize the overall lifting of the ship main engine, reduce the lifting height and difficulty, and improve the lifting safety through the automatic balance design of the pulley.
Smart Images
Figure CN119774440A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a hoisting device, in particular to a hoisting device for a whole main engine of a ship. Background Art
[0002] With the vigorous development and utilization of marine resources, the manufacturing industry of corresponding marine engineering equipment has become more and more prosperous. Marine ships are also developing towards larger ships with larger volume and deeper draft, and the overall deadweight of the ship's main engine is also getting heavier.
[0003] In the process of ship production, the hoisting of the ship main engine is a very important production link. The hoisting of the ship main engine is to assemble the pre-assembled structure in the factory in advance, and then directly hoist the assembled main engine structure into the cabin and install it directly to the designated location.
[0004] When hoisting a large ship main engine, the existing gantry crane on the slipway has limited load, so using the lower trolley hook alone or using two upper trolley hooks at the same time cannot meet the hoisting requirements. In addition, the length direction of the ship main engine is 90 degrees to the direction of the gantry crane main beam, and the hoisting height margin is not large, which makes the hoisting construction more difficult. Summary of the invention
[0005] The invention object of the present application is to provide a complete lifting device for a ship main engine, which can not only realize the use of an existing gantry crane and meet the lifting requirements, but also realize the installation of the ship main engine in the cabin according to the installation requirements.
[0006] In order to achieve the invention purpose of this application, this application adopts the following technical solutions: The present invention discloses a complete hoisting device for a ship main engine, wherein: it is installed on the first hoisting point of the gantry crane lower trolley and the second hoisting point and the third hoisting point of the gantry crane upper trolley, and the complete hoisting device for the ship main engine comprises: a main beam, a secondary beam, a lower beam and a pulley, one end of the main beam is vertically fixed to the center of the secondary beam through a connecting piece, the main beam and the secondary beam are on the same plane, the center of the lower beam is vertically fixed below the main beam through an ear plate and a connecting pin shaft, the two ends of the secondary beam are respectively hung on the above-mentioned second hoisting point and the third hoisting point through a shackle, a wire rope and a hook, the other end of the main beam is hung on the above-mentioned first hoisting point through a shackle, a wire rope and a hook, and N pulleys are installed on the lower beam.
[0007] The ship main engine complete machine hoisting device of the present invention, wherein: the gantry crane lower trolley and the gantry crane upper trolley are placed on the gantry crane main beam and move along the gantry crane main beam.
[0008] The ship main engine complete machine lifting device of the present invention, wherein: the shackles are respectively fixed on the two ends of the auxiliary beam and the other end of the main beam; the hooks are respectively installed on the above-mentioned gantry crane lower trolley and gantry crane upper trolley, and the hooks and shackles are connected together by wire ropes.
[0009] The complete ship main engine hoisting device of the present invention, wherein: the connecting piece comprises: a flange, a bolt and a nut, a flange is welded at the center of the secondary beam and one end of the main beam respectively, the bolt passes through the flange, and the nut is tightened on the bolt. The complete ship main engine hoisting device of the present invention, wherein: an ear plate is welded at the center of the lower beam and the main beam respectively, and the connecting pin passes through the ear plate to fix the lower beam and the main beam together.
[0010] The present invention provides a complete lifting device for a ship main engine, wherein: a redirecting wheel and a steering wheel are respectively installed at one end of both sides of the lower beam, and a wedge-shaped joint is respectively installed at the other end, N-fixed pulleys are respectively evenly installed on both sides of the lower beam between the steering wheel and the wedge-shaped joint, and N pulleys are evenly and parallelly arranged below between the above-mentioned wedge-shaped joint and the steering wheel, and the pulley comprises: a wire rope, a connecting frame, a rigging, a movable pulley, a connecting shaft and a pin shaft, the pin shaft passes through the connecting frame, and a movable pulley is respectively installed at both ends of the pin shaft, and the movable pulley and the above-mentioned fixed pulley are on the same plane, two wire ropes are respectively pulled out from the above-mentioned two redirecting wheels in sequence, bypassing the steering wheel, the adjacent movable pulley, the adjacent fixed pulley, ... the adjacent movable pulley, the adjacent fixed pulley, the adjacent movable pulley and the wedge-shaped joint, the connecting shaft is parallel to the pin shaft and is installed on the connecting frame below the pin shaft, and N hoists are respectively installed on the above-mentioned connecting shaft.
[0011] The whole-machine hoisting device for a ship main engine of the present invention, wherein: each movable pulley is located between a wedge-shaped joint and an adjacent fixed pulley, between two adjacent fixed pulleys, or between a steering wheel and an adjacent fixed pulley.
[0012] The complete machine hoisting device for a ship main engine of the present invention, wherein: the number N is 5-15. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A schematic diagram of a gantry crane for hanging a complete ship main engine hoisting device of the present invention; Figure 2 for Figure 1 Schematic side view of Figure 3 It is a forward schematic diagram of the whole-machine hoisting device for a ship main engine of the present invention; Figure 4 for Figure 3 Schematic diagram of the top view; Figure 5 for Figure 3 Schematic side view of .
[0014] exist Figures 1 to 5Among them, number 1 is the first lifting point; number 2 is the main beam; number 3 is the connecting piece; number 4 is the hook; number 5 is the second lifting point; number 6 is the auxiliary beam; number 7 is the lower beam; number 8 is the connecting pin; number 9 is the movable pulley; number 10 is the connecting shaft; number 11 is the wire rope; number 12 is the connecting frame; number 13 is the rigging; number 14 is the steering wheel; number 15 is the third lifting point; number 16 is the steering wheel; number 17 is the fixed pulley; number 18 is the wedge joint; number 19 is the ear plate; number 20 is the shackle; number 21 is the lower trolley of the gantry crane; number 22 is the upper trolley of the gantry crane; number 23 is the main beam of the gantry crane; number 24 is the gantry crane; number 25 is the pin.
[0015] Due to the limited lifting height margin of the gantry crane, the length direction of the ship main engine of the ship main engine complete machine lifting device of the present invention is 90 degrees to the direction of the gantry crane main beam, the overall height of the hoist should be reduced as much as possible, and the hoist is designed to be divided into upper and lower layers, the auxiliary beam and the main beam are connected to the three hooks of the gantry crane, and are designed to be a "T"-shaped beam in the same horizontal plane to reduce the height. The other end of the main beam can be connected to the lower trolley hook of the gantry crane, and the two ends of the auxiliary beam are respectively connected to the upper trolley hook of the gantry crane. Considering that the hoist needs to be transported by road from the manufacturing plant to the shipyard, the main beam and the auxiliary beam are connected by flanges and bolts, and the three hooks of the gantry crane are arranged roughly in a triangle, and the line connecting the two upper trolley hooks is perpendicular to the gantry crane main beam, and the lower trolley hook is located directly below the gantry crane main beam. The pulleys are connected in series through steel wire ropes, which can automatically compensate for the rigging length and ensure that each pulley is evenly stressed. The "T"-shaped main beam and auxiliary beam structure proposed in the present invention can make full use of the lifting capacity of the existing gantry crane to achieve the overall lifting of the ship's main engine. The lower beam of the present invention uses steel wire ropes in series to automatically balance the force of the pulleys, which is safer. DETAILED DESCRIPTION
[0016] like Figure 1 and Figure 2 As shown, the gantry crane for hanging the ship main engine complete machine lifting device of the present invention, the gantry crane lower trolley 21 and the gantry crane upper trolley 22 are placed on the gantry crane main beam 23, and move along the gantry crane main beam 23, and the hooks 4 are respectively installed on the above-mentioned gantry crane lower trolley 21 and the gantry crane upper trolley 22.
[0017] like Figures 3 to 5As shown, the whole-machine hoisting device for the main engine of a ship of the present invention is installed on the first hoisting point 1 of the gantry crane lower trolley 21 and the second hoisting point 5 and the third hoisting point 15 of the gantry crane upper trolley 22. The whole-machine hoisting device for the main engine of the ship comprises: a main beam 2, a secondary beam 6, a lower beam 7 and a pulley. One end of the main beam 2 is vertically fixed to the center of the secondary beam 6 through a connecting member 3. The connecting member 3 comprises: a flange, a bolt and a nut. Flanges are respectively welded at the center of the secondary beam 6 and one end of the main beam 2. The bolts pass through the above-mentioned flanges, and the nuts are tightened on the bolts. The main beam 2 and the auxiliary beam 6 are on the same plane, ear plates 19 are welded to the center of the lower beam 7 and the main beam 2 respectively, the connecting pin 8 passes through the ear plates 19 to fix the lower beam 7 and the main beam 2 together, and the shackles 20 are respectively fixed to the two ends of the auxiliary beam 6 and the other end of the main beam 2; the two ends of the auxiliary beam 6 are respectively hung on the second hanging point 5 and the third hanging point 15 by the shackles 20, the wire rope 11 and the hook 4, and the other end of the main beam 2 is hung on the first hanging point 1 by the shackles 20, the wire rope 11 and the hook 4, the hook 4 and the shackle 20 are connected together by the wire rope 11, and 6 pulleys are installed on the lower beam 7.
[0018] A redirecting wheel 14 and a steering wheel 16 are respectively installed at one end of both sides of the lower beam 7, and a wedge joint 18 is respectively installed at the other end. Five fixed pulleys 17 are evenly installed on both sides of the lower beam 7 between the steering wheel 16 and the wedge joint 18. N pulleys are evenly and parallelly arranged below the above-mentioned wedge joint 18 and the steering wheel 16. The pulley includes: a wire rope 11, a connecting frame 12, a rigging 13, a movable pulley 9, a connecting shaft 10 and a pin 25. The pin 25 passes through the connecting frame 12. A movable pulley 9 is respectively installed at both ends of the pin 25. The movable pulley 9 and the above-mentioned fixed pulley 17 are arranged at On the same plane, two steel ropes 11 are pulled out from the two redirecting wheels 14 in turn, passing around the steering wheel 16, the adjacent movable pulley 9, the adjacent fixed pulley 17, ... the adjacent movable pulley 9, the adjacent fixed pulley 17, the adjacent movable pulley 9 and the wedge joint 18. Each movable pulley 9 is located between the wedge joint 18 and the adjacent fixed pulley 17, between two adjacent fixed pulleys 17 or between the steering wheel 16 and the adjacent fixed pulley 17. The connecting shaft 10 is parallel to the pin shaft 25 and is installed on the connecting frame 12 below the pin shaft 25. The six hangers 13 are respectively installed on the above-mentioned connecting shaft 10.
[0019] The embodiments described above are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A ship main engine complete machine hoisting device, characterized in that: It is installed on the first lifting point (1) of the gantry crane lower trolley (21) and the second lifting point (5) and the third lifting point (15) of the gantry crane upper trolley (22). The whole lifting device for the main engine of the ship comprises: a main beam (2), a secondary beam (6), a lower beam (7) and a pulley. One end of the main beam (2) is vertically fixed to the center of the secondary beam (6) through a connecting piece (3). The main beam (2) and the secondary beam (6) are on the same plane. The lower beam (7) ) is vertically fixed at the center of the main beam (2) through an ear plate (19) and a connecting pin (8), and the two ends of the auxiliary beam (6) are respectively hung on the second hanging point (5) and the third hanging point (15) through a shackle (20), a wire rope (11) and a hook (4), and the other end of the main beam (2) is hung on the first hanging point (1) through a shackle (20), a wire rope (11) and a hook (4), and N pulleys are installed on the lower beam (7).
2. The whole-machine hoisting device for a ship main engine as claimed in claim 1, characterized in that: The gantry crane lower trolley (21) and the gantry crane upper trolley (22) are placed on the gantry crane main beam (23) and move along the gantry crane main beam (23).
3. The whole-machine hoisting device for a ship main engine as claimed in claim 2, characterized in that: The shackle (20) is respectively fixed to the two ends of the auxiliary beam (6) and the other end of the main beam (2); the hook (4) is respectively mounted on the gantry crane lower trolley (21) and the gantry crane upper trolley (22), and the hook (4) and the shackle (20) are connected together by a steel wire rope (11).
4. The whole-machine hoisting device for a ship main engine as claimed in claim 3, characterized in that: The connecting member (3) comprises: a flange, a bolt and a nut. A flange is welded at the center of the secondary beam (6) and at one end of the main beam (2), respectively. The bolt passes through the flange and the nut is tightened on the bolt.
5. The whole-machine hoisting device for a ship main engine as claimed in claim 4, characterized in that: Ear plates (19) are welded to the center of the lower beam (7) and the main beam (2), respectively, and the connecting pin (8) passes through the ear plates (19) to fix the lower beam (7) and the main beam (2) together.
6. The whole-machine hoisting device for a ship main engine according to claim 5, characterized in that: A redirecting wheel (14) and a steering wheel (16) are respectively installed at one end of both sides of the lower beam (7), and a wedge joint (18) is respectively installed at the other end. N-1 fixed pulleys (17) are evenly installed on both sides of the lower beam (7) between the steering wheel (16) and the wedge joint (18). N pulleys are evenly and parallelly arranged below the wedge joint (18) and the steering wheel (16). The pulleys include: a wire rope (11), a connecting frame (12), a rigging (13), a movable pulley (9), a connecting shaft (10) and a pin shaft (25). The pin shaft (25) passes through the connecting frame (12). A movable pulley (9) is respectively installed at both ends of the shaft (25), and the movable pulley (9) and the fixed pulley (17) are on the same plane. Two steel wire ropes (11) are respectively pulled out from the two redirecting wheels (14) and pass around the steering wheel (16), the adjacent movable pulley (9), the adjacent fixed pulley (17), ... the adjacent movable pulley (9), the adjacent fixed pulley (17), the adjacent movable pulley (9) and the wedge joint (18). The connecting shaft (10) is parallel to the pin shaft (25) and is installed on the connecting frame (12) below the pin shaft (25). N slings (13) are respectively installed on the connecting shaft (10).
7. The whole-machine hoisting device for a ship main engine as claimed in claim 6, characterized in that: Each movable pulley (9) is located between a wedge joint (18) and an adjacent fixed pulley (17), between two adjacent fixed pulleys (17), or between a deflection wheel (16) and an adjacent fixed pulley (17).
8. The whole-machine hoisting device for a ship main engine as claimed in claim 7, characterized in that: The N is 5-15.