Marine deck crane mounting process

Abstract

The invention discloses a ship deck crane mounting process. The marine deck crane installation process comprises the following steps that firstly, a base and a hoisting mechanism are assembled on the flat ground; step 2, mounting a hoisting the base to a ship by means of a dock area portal crane, and mounting the base at a set position of the ship; and thirdly, a hoisting mechanism is installed, specifically, the base is hoisted to the position above the base with the help of a dock area door seat machine, and the hoisting mechanism is installed at the top of the base. The problems that in the prior art, the operation period is long, the construction cost is high, the production efficiency is low, and potential safety hazards are large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly to an installation process for a marine deck crane. Background Art

[0002] Currently, the installation steps for a deck crane on a handy-sized bulk carrier are as follows: S1. Install each cylinder body on the hull in the dry dock; S2. Erect scaffolding around each cylinder body; S3. Paint the cylinder body; S4. Install cylinder body accessories such as a maintenance platform and a jib on the upper part of the cylinder body; S5. Remove the scaffolding; S6. Install a slewing tower body at the top of the cylinder body; S7. Install a boom on the slewing tower body; S8. Thread a wire rope between the winch on the slewing tower body and the pulley on the boom, and apply lubricating oil; S9. Install electrical equipment on the slewing tower body. The entire operation cycle is relatively long, the construction cost is high, the production efficiency is low, the working load of large lifting equipment is high, which affects the lifting of other marine items and delays the construction cycle of the entire ship. Moreover, when threading the wire rope and applying lubricating oil, the operators are working at heights for a long time, posing a great safety hazard. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the existing technology and provide an installation process for a marine deck crane that can shorten the operation cycle, reduce the construction cost, improve the production efficiency, and reduce safety hazards.

[0004] To achieve the above purpose, the technical solution adopted by the installation process for the marine deck crane of the present invention is: An installation process for a marine deck crane, comprising the following steps:

[0005] Step 1. Assemble the base and the lifting mechanism on the ground;

[0006] The assembly steps of the base include:

[0007] a1. Lift the cylinder body to the vertical installation frame;

[0008] a2. Adjust the verticality of the cylinder body and fix it;

[0009] a3. Install cylinder body fittings on the cylinder body with the aid of the vertical installation frame;

[0010] a4. Perform painting operations on the cylinder body with the aid of the vertical installation frame;

[0011] The assembly steps of the lifting mechanism include:

[0012] b1. Install the boom on the slewing tower body;

[0013] b2. Thread a wire rope between the winch on the slewing tower body and the pulley on the boom, and apply lubricating oil;

[0014] B3. Install electrical equipment on the slewing tower body;

[0015] Step 2: Install the base: Use the docking area portal crane to lift the base to the ship and install the base at the set position on the ship;

[0016] Step 3: Install the lifting mechanism: Use the dock area gantry crane to lift the base to the top of the base and install the lifting mechanism on the top of the base.

[0017] Preferably, the vertical mounting frame includes a base frame, a frame is arranged on the top of the base frame, and several layers of working platforms are arranged on both sides of the frame. The working platforms on the same layer on both sides are connected by aisles, and the aisles divide the interior of the frame into two cylinder storage areas. At least one side of the frame is provided with multiple straight ladders as passages between the base frame and the lowest layer of working platform and adjacent layers of working platforms.

[0018] Preferably, a support platform is provided on the bottom frame. In step a2, after the verticality of the cylinder is adjusted, the bottom of the cylinder is temporarily fixed to the support platform by welding an angle code.

[0019] Preferably, guardrails are provided above the working platform and the aisle.

[0020] Preferably, the lubricating oil is butter.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The base and the lifting mechanism are assembled on the ground to form two unit modules, and then the ship deck crane is installed with the help of the dock gantry crane, which greatly shortens the installation period of the ship deck crane and reduces the occupation of large lifting equipment resources (dock gantry crane), which is conducive to shortening the entire construction period of the ship.

[0023] 2. The base is assembled with the help of a vertical mounting frame, which can be used repeatedly, eliminating the steps of repeatedly erecting and dismantling scaffolding, saving both time and cost.

[0024] 3. The cylinder is painted after the cylinder accessories are installed to avoid the need for repainting and save costs.

[0025] 4. After the lifting mechanism is assembled on the ground, high-altitude operations are avoided, which greatly reduces safety hazards. It is more convenient to operate when threading the wire rope, which is conducive to improving installation accuracy. When applying lubricant to the wire rope, it can also avoid the lubricant from splashing everywhere and causing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The invention discloses a process diagram of the installation process of a ship deck crane.

[0027] Figure 2 It is a front view of the vertical mounting frame of the present invention.

[0028] Figure 3 is Figure 2 a side view of...

[0029] Figure 4 is a schematic structural view of the bottom frame of the present invention.

[0030] Figure 5 is a cross-sectional view of the frame of the present invention.

[0031] Among them, 1 is the bottom frame, 11 is the support platform, 2 is the frame, 21 is the operation platform, 22 is the aisle, 23 is the cylinder storage area, 24 is the guardrail, 25 is the straight ladder, and 3 is the cylinder. Specific embodiments

[0032] The present invention will be further clarified below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, various equivalent modifications made by those skilled in the art fall within the scope defined by the appended claims of this application.

[0033] As Figures 1-5 shown, a marine deck crane installation process includes the following steps:

[0034] Step 1: Assemble the base and the lifting mechanism on flat ground;

[0035] The assembly steps of the base include:

[0036] a1. Lift the cylinder to the vertical installation frame; the vertical installation frame includes a bottom frame 1, a frame 2 is welded to the top surface of the bottom frame, three layers of operation platforms 21 are provided on each of the front and rear sides of the frame, the operation platforms on the same layer on the front and rear sides are connected by an aisle 22, the aisle divides the inner part of the frame into two cylinder storage areas 23, guardrails 24 are installed above the operation platforms and the aisle to improve safety, and a plurality of straight ladders 25 are installed on the front side of the frame as the passage between the bottom frame and the bottommost operation platform and between adjacent operation platforms. The bottom frame is provided with two support platforms 11 for supporting the cylinder 3. Compared with the ground, the flatness of the support platform is higher, which is convenient for adjusting the verticality after the cylinder is lifted and is also convenient for welding angle codes between the cylinder and the support platform to fix the cylinder;

[0037] a2. Adjust the verticality of the cylinder and fix it: Lift the cylinder into the vertical installation frame by a truck crane and adjust the verticality of the cylinder with the help of the truck crane. The bottom of the cylinder is temporarily fixed by welding an angle code to the support platform to ensure the installation accuracy of subsequent components;

[0038] a3. Install the cylinder accessories on the cylinder body with the help of a vertical mounting frame: The cylinder accessories mainly include a maintenance platform and a ladder. The ladder is welded to the side wall of the cylinder body, and the maintenance platform is welded to the upper part of the cylinder body. Workers can move back and forth between the maintenance platform and the clamping plate through the ladder. The maintenance platform and the ladder are also hoisted by a truck crane.

[0039] a4. Carry out painting operations on the cylinder body with the help of a vertical mounting frame: After all the welding work in step a3 is completed, then carry out the painting operation to avoid repainting and save costs.

[0040] The assembly steps of the hoisting mechanism include:

[0041] b1. Install the boom on the slewing tower: In this step, a truck crane is also used as the hoisting equipment to minimize the occupation of large hoisting equipment resources (dock area gantry crane), which is beneficial to shortening the entire shipbuilding cycle.

[0042] b2. Thread a wire rope between the winch on the slewing tower and the pulley on the boom and apply lubricating oil. The lubricating oil is grease. The operators carry out the rope threading and greasing operations on the ground, avoiding high-altitude operations, greatly reducing safety hazards, being more convenient to operate, having high work efficiency, and also avoiding the pollution of uncertain areas caused by the flying of grease everywhere.

[0043] B3. Install electrical equipment on the slewing tower;

[0044] Step 2. Install the base: Use the dock area gantry crane to lift the base onto the ship and install the base at the set position on the ship.

[0045] Step 3. Install the hoisting mechanism: Use the dock area gantry crane to lift the base above the base and install the hoisting mechanism on the top of the base.

[0046] The present invention advances some installation processes of the marine deck crane, that is, before using the dock area gantry crane, the assembly of the base and the hoisting mechanism are first completed on the ground respectively to form two unit modules, greatly shortening the installation cycle of the marine deck crane, reducing the occupation of large hoisting equipment resources (dock area gantry crane), being beneficial to shortening the entire shipbuilding cycle, and also being beneficial to the overall planning of the shipyard production plan and improving the shipyard production capacity. In the advanced processes, the repeated erection of scaffolding is avoided, the repainting is avoided, the work efficiency is improved while the production cost is reduced; the high-altitude operations are also avoided in the advanced processes, the safety hazards are greatly reduced, and the operation is more convenient to improve the work efficiency.

Claims

1. A ship deck crane installation process, characterized in that: The steps include: Step 1: Assemble the base and lifting mechanism on the ground; The steps for assembling the base include: a1. Lift the cylinder to the vertical mounting frame; a2. Adjust the verticality of the cylinder and fix it; a3. Install the cylinder accessories on the upper part of the cylinder with the help of a vertical mounting frame; a4. Use the vertical mounting frame to paint the cylinder; The assembly steps of the lifting mechanism include: b1. Install the boom on the slewing tower; b2. Pass the wire rope between the winch on the slewing tower and the pulley on the boom, and apply lubricating oil; B3. Install electrical equipment on the slewing tower; Step 2: Install the base: Use the docking area portal crane to lift the base to the ship and install the base at the set position on the ship; Step 3: Install the lifting mechanism: Use the dock area gantry crane to lift the base to the top of the base and install the lifting mechanism on the top of the base.

2. The installation process of a ship deck crane according to claim 1, characterized in that: The vertical mounting frame includes a bottom frame, a frame is arranged on the top of the bottom frame, and several layers of working platforms are arranged on both sides of the frame. The working platforms on the same layer on both sides are connected by aisles, and the aisles divide the inside of the frame into two cylinder storage areas. At least one side of the frame is provided with multiple straight ladders as passages between the bottom frame and the lowest layer of working platform and the adjacent layer of working platforms.

3. The installation process of a ship deck crane according to claim 2, characterized in that: A supporting platform is provided on the bottom frame. In step a2, after the verticality of the cylinder is adjusted, the bottom of the cylinder is temporarily fixed to the supporting platform by welding with an angle code.

4. The installation process of a ship deck crane according to claim 2, characterized in that: Guardrails are installed above the working platform and aisles.

5. The installation process of a ship deck crane according to claim 1, characterized in that: The lubricating oil is butter.

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