Method for quickly sitting on pier after semi-floating of ship

Abstract

The invention discloses a rapid pier setting method after semi-floating of a ship. According to the method, at least two limiting devices are installed on the ship side of a half ship before water enters a dock, the distance from the limiting devices to the stern or the bow of the half ship is 1 / 4-3 / 4 of the total length of the half ship, each limiting device comprises a sliding block welded to a ship side outer plate, a limiting rod penetrates through each sliding block, a base is arranged at the bottom of each limiting rod, and the limiting rods are arranged on the bases. The limiting rod is vertically arranged in the dock through the base, and a gap of 5-15 mm is reserved between the inner wall of the opening of the sliding block and the outer wall of the limiting rod. The problems that in the prior art, when the half ship floats upwards, the allowable trim angle range is small, and the safety risk is high are solved.

Description

Technical Field

[0001] The invention relates to the technical field of ships, and in particular to a method for quickly setting a pier after a ship is semi-floating. Background Art

[0002] When multiple ships are being built in a dock at the same time, due to the different undocking times, when one ship is undocking, another ship needs to be piered again after being floated.

[0003] The existing Chinese invention patent with publication number CN100347039C and titled "A method for secondary positioning of the floating state of half a ship in a dock" discloses installing a limit device at the stern of the half ship: fixing the limit seat of the limit device to the dock bottom, welding N (N is a positive integer) first sets of plates to the stern sealing plate of the half ship, and welding the first positioning tube to the limit seat and passing through the through hole provided on the first set of plates; installing a second limit device on the side of the half ship near the bow and stern: fixing one end of the pillar of the second limit device to the dock bottom, and installing a wooden board at the other end in contact with the outer plate of the half ship, and installing a stretcher between the pillar and the dock; installing a third limit device at each end of the bow longitudinal girder of the half ship: welding N (N is a positive integer) second sets of plates of the third limit device to the bow longitudinal girder plate of the half ship, and the second positioning tube is welded to the pad fixed to the dock bottom and passing through the through hole provided on the second set of plates. Among them, the first and second positioning tubes play a guiding role, allowing half of the ship to float up and down in place. However, due to differences in line shape, layout, etc., the bow and stern of the half ship have different drafts. When the dock is flooded and half of the ship floats up, the line connecting the bow and stern will form a longitudinal inclination angle with the horizontal plane. If the longitudinal inclination angle is too large, the longer the sliding distance of the sleeves installed on the first and second sets of plates on the first and second positioning tubes, the greater the deformation of the first and second positioning tubes, and plastic deformation and even tipping are likely to occur. Therefore, the existing technology allows a small range of longitudinal inclination angles when half of the ship floats up, and the safety risk is relatively high. Summary of the invention

[0004] The purpose of the present invention is to provide a method for quickly piercing a ship after half floating, which can increase the allowable range of longitudinal inclination angles when half of the ship is floating, thereby reducing safety risks, in view of the shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the method for quickly setting a pier after a semi-floating ship of the present invention is:

[0006] A method for quickly piercing a ship after semi-floating, comprising half a ship, at least two limiting devices are installed on the side of the half ship before the dock is filled with water, the distance from the limiting device to the stern or bow of the half ship is 1 / 4-3 / 4 of the total length of the half ship, the limiting device comprises a slider welded to the outer plate of the ship side, the slider passes through a limiting rod, a base is arranged at the bottom of the limiting rod, the limiting rod is erected in the dock through the base, and a 5-15mm gap is left between the inner wall of the slider opening and the outer wall of the limiting rod.

[0007] Preferably, when the slider is welded to the ship's side outer plate, the slider and the ribs on the inner side of the ship's side outer plate are in the same cross section.

[0008] Preferably, the base is provided with a counterweight.

[0009] Preferably, when half of the ship is close to the dock wall, a buttress is installed between the dock wall and the side of the half ship, the buttress includes a frame, one side of the frame abuts against the outer plate of the ship's side, and the other side is provided with a support frame, the support frame is movably connected with a support leg for abutting against the dock wall.

[0010] Preferably, a diagonal brace for contacting the outer plate of the ship's side is provided on the top of the support frame.

[0011] Preferably, the support frame is a water tank, which stores water to increase weight.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The limit device is set on the side of the half ship. Compared with the existing technology under the same conditions, the displacement of the slider driven by the half ship hull on the limit rod is smaller, the bending deformation of the limit rod is reduced, and the work done by the lateral force is reduced. Therefore, the allowable range of the longitudinal inclination angle when the half ship floats can be increased, thereby reducing the safety risk. In addition, a single-sided gap of 5-15mm is left between the slider opening and the limit rod to avoid the two from getting stuck during relative movement, and to ensure that the half ship's falling position is within the allowable deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a layout diagram of the limiting device and the abutting device of the present invention.

[0015] Figure 2 yes Figure 1 Side view of.

[0016] Figure 3 It is a schematic structural diagram of the limiting device of the present invention.

[0017] Figure 4 It is a structural schematic diagram of the abutment device of the present invention.

[0018] Among them, 1 is a half ship, 2 is a limiting device, 21 is a slider, 22 is a limiting rod, 23 is a base, 24 is a counterweight, 3 is a supporting device, 31 is a supporting frame, 32 is a diagonal brace, 33 is a supporting frame, and 34 is a supporting leg. DETAILED DESCRIPTION

[0019] The present invention is further explained 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 are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0020] like Figure 1-4 As shown, a method for quickly piercing a ship after semi-floating comprises a half ship 1. Four limiting devices 2 are installed on the side of the half ship before the dock is filled with water. The four limiting devices are arranged in groups of two on the left and right sides of the half ship. The distance from the rear group of limiting devices to the stern of the half ship is 1 / 3 of the total length of the half ship, and the distance from the front group of limiting devices to the bow of the half ship is 1 / 3 of the total length of the half ship. The limiting device comprises a slider 21 welded to the outer plate of the ship side. When the slider is welded to the outer plate of the ship side, the slider and the rib plate on the inner side of the outer plate of the ship side are in the same cross section, which can improve the strength of the hull. When the slider is subjected to lateral force, the hull is prevented from being deformed by pulling. The slider passes through a limiting rod 22. A base 23 is welded to the bottom of the limiting rod. The limiting rod is erected in the dock through the base. Counterweight blocks 24 are placed on the front and rear sides of the base. The counterweight blocks are 60-ton iron blocks to ensure the stability of the base and prevent the limiting rod from being deformed. The positioning rod is tilted by force, and a 10mm gap is left between the inner wall of the slider opening and the outer wall of the limiting rod to avoid jamming when the limiting rod and the slider move relative to each other. The deviation is small when half of the ship falls back, which meets the requirements. Two abutment devices 3 are installed between the dock wall and the side of the half ship. The abutment device includes a support frame 31, which is a water tank. The water tank is weighted by water storage. The water tank weighs 23 tons and the water storage weight is 41 tons. The top surface of the water tank is flush with the ground. The top surface of the water tank is installed with a diagonal brace 32 for resisting the outer plate of the ship's side to increase the resistance to the half ship. One side of the support frame resists the outer plate of the ship's side, and a support frame 33 is installed on the other side. The support frame is movably connected to the support leg 34 for resisting the dock wall. After the fitting position of the support frame and the outer plate of the ship's side is determined, the distance of the support leg extending out of the support frame is adjusted, and the support leg resists the dock wall to provide sufficient supporting force for the support frame to prevent the half ship from hitting the dock wall during the ups and downs. When the side of the half ship is not close to the dock wall, there is no need to install the abutment device.

[0021] By installing limit devices on both sides of half the ship, the present invention, compared with the prior art, under the same conditions, the displacement of the slider driven by the hull of half the ship on the limit rod is smaller, the bending deformation of the limit rod is reduced, and the work done by the lateral force is reduced. Therefore, the allowable longitudinal inclination angle range when the half ship floats can be increased, thereby reducing the safety risk.

Claims

1. A method for quickly piercing a ship after it is semi-floating, comprising half a ship, characterized in that: Before the dock is flooded, at least two limit devices are installed on the side of the half ship. The distance from the limit device to the stern or bow of the half ship is 1 / 4-3 / 4 of the total length of the half ship. The limit device includes a slider welded to the outer plate of the ship's side. The slider passes through a limit rod. A base is provided at the bottom of the limit rod. The limit rod is erected in the dock through the base. A 5-15mm gap is left between the inner wall of the slider opening and the outer wall of the limit rod.

2. The method for rapid pier setting after semi-floating of a ship according to claim 1, characterized in that: When the slider is welded to the ship's side outer plate, the slider and the rib plate on the inner side of the ship's side outer plate are located in the same cross section.

3. The method for rapid pier setting after semi-floating of a ship according to claim 1, characterized in that: The base is provided with a counterweight.

4. The method for rapid pier setting after semi-floating of a ship according to claim 1, characterized in that: It also includes installing a buttress device between the dock wall and the side of the half ship when half of the ship is close to the dock wall. The buttress device includes a support frame, one side of the support frame abuts against the outer plate of the ship's side, and the other side is provided with a support frame, which is movably connected with a support leg for abutting against the dock wall.

5. The method for rapid pier setting after semi-floating of a ship according to claim 4, characterized in that: The top of the support frame is provided with an oblique support for contacting the outer plate of the ship.

6. The method for rapid pier setting after semi-floating of a ship according to claim 5, characterized in that: The support frame is a water tank, which stores water to increase its weight.

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