Process method for mounting axle generator on container ship by crossing lashing bridge

By drilling holes and installing slipways on container ships, and using tools such as offshore cranes and jacks to lift shaft-driven generators across the lashing bridge, the problems of high construction difficulty and long construction period in existing technologies have been solved, and a highly efficient installation process has been achieved.

CN121573549APending Publication Date: 2026-02-27COSCO DALIAN SHIPYARD
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Patent Information

Application Number
CN202511769780.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

In existing technologies, the installation of shaft-driven generators requires the removal of the upper bulkhead and lashing bridge, resulting in high construction difficulty and long construction period.

Method used

By opening process holes in the transverse bulkhead and cargo hold bottom platform, installing slideways and temporary sliding trolley bases, and using tools such as offshore cranes and jacks, the shaft-driven generator is hoisted across the lashing bridge, avoiding the complete removal of the transverse bulkhead and lashing bridge, thus achieving precise installation.

Benefits of technology

This reduced the amount of dismantling and reassembly work, shortened the construction period, and improved construction efficiency.

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Abstract

The invention discloses a technological method for mounting an axle generator on a container ship across a binding bridge. The technological method comprises the following steps that a, auxiliary holes are formed in a transverse bulkhead above the mounting position of the axle generator and a stern cargo hold bottom platform; b, a slideway is installed on a stern cargo hold bottom platform, and a temporary sliding trolley base is manufactured below the axle generator; c, the axle generator is hoisted to a slide way of a stern cargo hold bottom platform through a sea crane, and a lock is disconnected; d, dragging the axle generator to the bow part, and sliding the axle generator to the side upper part of the mounting position; e, moving the sea crane to hang the lock again, wherein two hook heads of the sea crane are located on the bow side and the stern side of the binding bridge respectively; f, the axle generator and the temporary sliding trolley base are separated, and the axle generator is slowly hoisted and moved into the cabin; g, the process holes are reinstalled to complete installation; the technical method for installing the shaft generator solves the problem that a large amount of dismantling objects are needed for installing the generator, greatly reduces the workload of cutting and reassembling and welding, shortens the project construction period and greatly improves the competitiveness.
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Description

Technical Field

[0001] This invention relates to a process for installing a shaft-driven generator across the lashing bridge of a container ship. Background Technology

[0002] When a shaft-driven generator is located above a transverse bulkhead, it cannot be installed directly using a crane. The upper bulkhead, lashing bridge, and other accessories must all be removed before hoisting can proceed. This involves a large amount of dismantling and reinstallation work, high construction difficulty, and a long project cycle. Now, a method has been invented that hoists the shaft-driven generator across the lashing bridge. The installation of the shaft-driven generator can be completed by making only partial openings in the transverse bulkhead and the cargo hold bottom platform, which greatly reduces the amount of dismantling work and shortens the construction period. Summary of the Invention

[0003] The purpose of this invention is to provide a process for installing a shaft-driven generator across the lashing bridge of a container ship.

[0004] The technical solution adopted by the present invention to achieve the above objectives is: a process for installing a shaft-driven generator across the lashing bridge of a container ship, comprising the following steps: a. Open process holes (5) in the transverse bulkhead (2) above the installation position of the shaft generator (1) and the bottom platform (3) of the stern cargo hold. b. Install a slide rail (4) on the bottom platform (3) of the stern cargo hold and make a temporary sliding trolley base (6) below the shaft generator (1). c. Using a sea crane (7), the shaft generator (1) is hoisted onto the slide (4) of the bottom platform (3) of the stern cargo hold, and the lock (9) is disconnected. d. Move the shaft-driven generator (1) towards the bow and slide it to the side above the installation position; e. The berthed sea crane (7) is re-locked (9), with the two hooks of the sea crane (7) located on the bow and stern sides of the berthing bridge (10); f. Disconnect the shaft-driven generator (1) from the temporary sliding trolley base (6), slowly lift the shaft-driven generator (1) and move it into the engine room (11); g. Reinstall process hole (5) to complete the installation.

[0005] In step a, the size of the process hole (5) meets the requirements for the sliding and hoisting of the shaft-driven generator.

[0006] In step e, the lock (9) is opened using the boom (8) to avoid interference with the lashing bridge (10) and the transverse bulkhead (2).

[0007] In step f, when hoisting the generator into the nacelle (11), a hand-operated hoist (12) is used to assist in positioning and achieve precise installation.

[0008] This invention provides a process for installing a shaft-driven generator across a lashing bridge on a container ship. This method allows for the installation of the shaft-driven generator without completely dismantling the transverse bulkhead and lashing bridge above it. It solves the problem of requiring a large amount of material to be removed when installing a generator, greatly reduces the amount of cutting and reassembly welding work, shortens the project time, and significantly improves competitiveness. Attached Figure Description

[0009] Figure 1 This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship. The diagram shows the installation position of the shaft-driven generator.

[0010] Figure 2 This is a schematic diagram of the temporary opening and slideway installation position in a process method for installing a shaft-driven generator across the lashing bridge of a container ship according to the present invention.

[0011] Figure 3 This is a front view of the base of the temporary sliding trolley for the shaft generator, which is part of a process for installing a shaft-driven generator across a lashing bridge on a container ship according to the present invention.

[0012] Figure 4 This is a side view of the base of a temporary sliding trolley for installing a shaft-driven generator across a lashing bridge on a container ship, according to the present invention.

[0013] Figure 5 This is a top view of the base of the temporary sliding trolley for the shaft generator, which is a process method for installing a shaft generator across the lashing bridge of a container ship according to the present invention.

[0014] Figure 6 yes Figure 5 A sectional view along the AA direction.

[0015] Figure 7 yes Figure 5 BB-direction sectional view.

[0016] Figure 8 This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship. The diagram illustrates the process of hoisting the shaft-driven generator into the cargo hold. Figure 1 .

[0017] Figure 9 This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship. The diagram illustrates the process of hoisting the shaft-driven generator into the cargo hold. Figure 2 .

[0018] Figure 10 This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship. The diagram illustrates the method of sliding the shaft-driven generator to an angled position above the installation point. Figure 1 .

[0019] Figure 11This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship. The diagram illustrates the method of sliding the shaft-driven generator to an angled position above the installation point. Figure 2 .

[0020] Figure 12 This is a schematic diagram of a process for installing a shaft-driven generator across a lashing bridge on a container ship, according to the present invention.

[0021] Figure 13 This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship, illustrating the hoisting of the shaft-driven generator into the engine room. Figure 1 .

[0022] Figure 14 This invention relates to a process for installing a shaft-driven generator across a lashing bridge on a container ship, illustrating the hoisting of the shaft-driven generator into the engine room. Figure 2 . Detailed Implementation

[0023] like Figures 1 to 14 As shown, the process for installing a shaft generator across the lashing bridge of a container ship includes the following steps: a) Opening process holes 5 in the transverse bulkhead 2 above the installation position of the shaft generator 1 and in the bottom platform 3 of the stern cargo hold. The dimensions of the process holes 5 meet the requirements for sliding and hoisting the shaft generator; b) Installing a slide rail 4 on the bottom platform 3 of the stern cargo hold and constructing a temporary sliding trolley base 6 below the shaft generator 1; c) Hoisting the shaft generator 1 onto the slide rail 4 of the bottom platform 3 of the stern cargo hold using a gantry crane 7, and disconnecting the locking device 9; d) Towing the shaft generator 1 towards the bow and sliding it to the side above the installation position; e) Re-attaching the locking device 9 to the gantry crane 7, with the two hooks of the gantry crane 7 located on the bow and stern sides of the lashing bridge 10 respectively, utilizing... The lifting bar 8 opens the lock 9 to avoid interference with the lashing bridge 10 and the transverse bulkhead 2; f. detach the shaft-driven generator 1 from the temporary sliding trolley base 6, slowly lift the shaft-driven generator 1, and move it into the engine room 11. When hoisting the generator into the engine room 11, use a hand-operated hoist 12 for positioning to achieve precise installation; g. reinstall the process hole 5 to complete the installation; The present invention's method for installing a shaft-driven generator across the lashing bridge on a container ship allows for the installation of the shaft-driven generator without completely dismantling the transverse bulkhead and lashing bridge above it. This solves the problem of requiring a large amount of material to be removed when installing the generator, greatly reduces the amount of cutting and reinstallation welding work, shortens the project time, and significantly improves competitiveness.

Claims

1. A process for installing a shaft-driven generator across a lashing bridge on a container ship, characterized in that, Includes the following steps: a. Open process holes (5) in the transverse bulkhead (2) above the installation position of the shaft generator (1) and the bottom platform (3) of the stern cargo hold. b. Install a slide rail (4) on the bottom platform (3) of the stern cargo hold and make a temporary sliding trolley base (6) below the shaft generator (1). c. Using a sea crane (7), the shaft generator (1) is hoisted onto the slide (4) of the bottom platform (3) of the stern cargo hold, and the lock (9) is disconnected. d. Move the shaft-driven generator (1) towards the bow and slide it to the side above the installation position; e. The berthed sea crane (7) is re-locked (9), with the two hooks of the sea crane (7) located on the bow and stern sides of the berthing bridge (10); f. Disconnect the shaft-driven generator (1) from the temporary sliding trolley base (6), slowly lift the shaft-driven generator (1) and move it into the engine room (11); g. Reinstall process hole (5) to complete the installation.

2. The method for installing a shaft-driven generator across a lashing bridge on a container ship according to claim 1, characterized in that: In step a, the size of the process hole (5) meets the requirements for the sliding and hoisting of the shaft-driven generator.

3. The method for installing a shaft-driven generator across a lashing bridge on a container ship according to claim 1, characterized in that: In step e, the lock (9) is opened using the boom (8) to avoid interference with the lashing bridge (10) and the transverse bulkhead (2).

4. The method for installing a shaft-driven generator across a lashing bridge on a container ship according to claim 1, characterized in that: In step f, when hoisting the generator into the nacelle (11), a hand-operated hoist (12) is used to assist in positioning and achieve precise installation.