Shipway launching trepanning support

Abstract

A slipway launching trepanning support is characterized in that a circular hole is formed in a slipway strong frame, a cargo oil pipe is located in the circular hole, and a trepanning supporting tool is arranged between the cargo oil pipe and the hole; the trepanning supporting tool comprises an upper supporting body and a lower supporting body, the top of the upper supporting body is provided with an upper arc-shaped plate, and the two sides of the upper arc-shaped plate are provided with upper side plates which are folded downwards and inwards; the lower supporting body is provided with a lower arc-shaped plate, the two sides of the lower arc-shaped plate are provided with lower side plates which are folded upwards and inwards, and the upper supporting body and the lower supporting body are connected through a spring. The upper arc-shaped plate and the lower arc-shaped plate are both provided with upwards-bent radians, the upper arc-shaped plate is attached to the inner wall of the circular opening, and the lower arc-shaped plate is attached to the outer wall of the cargo oil pipe. The open hole can be reinforced under the condition that welding is not needed, the open hole is connected with the internal cargo oil pipe through elastic flexible connection, the connecting area of the open hole is increased, the compression resistance and the shearing resistance of the open hole are improved, the resistance of the open hole is improved, and meanwhile the inner cargo oil pipe cannot be damaged.

Description

Technical Field

[0001] The invention belongs to the field of marine engineering construction and design, and in particular relates to a ship launching opening support. Background Art

[0002] When launching a ship on a slide, the strong frame structure at the bottom of the hull is often damaged. It is necessary to conduct a pre-judgment analysis of the local strength of the bottom structure in advance. If the area with insufficient strength is found, the structure can be strengthened before launching, or other methods can be used to avoid damage to the bottom structure during launching.

[0003] During the launching process of a ship, before the stern floats, the gravity on the hull structure that slides out of the slideway is greater than the buoyancy, the hull beam is in a mid-arch state, and the support reaction force on the hull structure at the end of the slideway is instantly amplified. In particular, when the strong frame is at the end of the slideway, the stress of the strong frame directly affected by the slideway often exceeds the yield limit. When an opening is set in the strong frame on the slideway, the stress will be amplified to 5 times that of the position without the opening. In the prior art, in order to solve this problem, it is usually selected to set a longitudinal girder here, which will increase the weight of the structure and the amount of welding. Or hundreds of launching support tools are used, which are installed in the double bottom in the early stage and dismantled in the later stage. The narrow working space brings great work difficulties to the on-site workers.

[0004] At the same time, some openings on the ship can be reinforced or filled, but the openings for passing pipes cannot be reinforced or filled. If the reinforcement is too strong, the stress will be transferred to the pipe, causing excessive stress to the pipe, causing the pipe to break. The damaged pipe is difficult to repair, so a water sealing tool under the slipway is very important.

[0005] In the prior art, after the finite element analysis of the water strength, the reinforcement method in the strong frame opening interval is as follows: Figure 1 , that is, to reinforce the places where the openings are not large enough, that is, to weld a plate with a slightly larger extension on the outside of the opening, and then completely remove the opening after the ship is launched. This wastes welding and is time-consuming and labor-intensive, and it is an operation in a small space. It is even more difficult to do in some areas where fire is not allowed, which creates problems for on-site construction. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a berth launch opening support, which aims to increase the resistance of the opening while not causing damage to the inner cargo oil pipe and avoiding construction difficulties. The technical solution adopted is:

[0007] A ship slipway launching opening support, a round opening on a ship slipway strong frame, a cargo oil pipe is located in the round opening, and an opening support tooling is arranged between the cargo oil pipe and the opening.

[0008] The opening support tooling includes an upper support body and a lower support body. The upper support body is provided with an upper arc-shaped plate on the top, and upper side plates that are retracted downward are provided on both sides of the upper arc-shaped plate; the lower support body is provided with a lower arc-shaped plate, and lower side plates that are retracted upward are provided on both sides of the lower arc-shaped plate. The upper support body and the lower support body are connected by a spring.

[0009] The upper curved plate and the lower curved plate both have an upward curvature, the upper curved plate fits with the inner wall of the circular opening, and the lower curved plate fits with the outer wall of the cargo oil pipe.

[0010] The above-mentioned slipway launching opening support further has the curvature of the upper arc plate consistent with the radius of the circular opening, and the curvature of the lower arc plate consistent with the radius of the outer wall of the cargo oil pipe.

[0011] The above-mentioned slipway launching hole support further has continuous soft plastic strips arranged on both sides of the upper arc-shaped plate and along the length direction of the upper arc-shaped plate.

[0012] The above-mentioned opening support for launching a slipway, further, the opening support tooling is used in pairs, and more than one pair of opening support work is arranged at equal intervals between the cargo oil pipe and the circular opening.

[0013] The above-mentioned slipway launching opening support, further, the width of the upper arc plate is M, M is twice the thickness of the strong frame plate at the circular opening, the width of the lower arc plate is N, N is twice the width of the upper arc plate, N=2M.

[0014] The above-mentioned ship launching opening support, further, the upper arc plate and the lower arc plate form an angle A, 90° <A<120°。

[0015] The above-mentioned one kind of berth launching opening support, further, the upper side plate and the upper arc plate form an angle C, 45° <C<90°。

[0016] The above-mentioned one kind of berth launching hole support, further, the lower side plate and the lower arc plate form an angle B, 45° <B<90°。

[0017] The above-mentioned slipway launching hole support, further, has a lower arc-shaped plate having a length greater than that of an upper arc-shaped plate.

[0018] The above-mentioned slipway launching hole support further has epoxy resin pasted on the outer surfaces of the upper curved plate and the lower curved plate.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention provides an opening support structure used for launching a ship. The present invention can reinforce the opening without welding, and connect the opening to the internal cargo oil pipe through an elastic soft connection, thereby increasing the connection area of ​​the opening and increasing its ability to resist compression and shear forces.

[0021] 2. Since the double-bottom space is short and difficult to operate, the present invention does not require welding in the double-bottom, and only needs to be installed, which can greatly ease the operation in a small space and avoid waste of manpower.

[0022] 3. The elastic structure soft connection increases the resistance of the opening while not causing damage to the inner cargo oil pipe.

[0023] 4. While protecting the paint at the contact point between the tooling and the hull structure, the tooling is easy to install and flexible to use, effectively preventing the deformation of the outer bottom plate and components of the hull during the launching process of the ship, reducing the design and construction workload increased by structural modification, and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an existing method for strengthening openings;

[0025] Figure 2 It is a schematic diagram of the use of the present invention;

[0026] Figure 3 It is a side structural schematic diagram of the present invention;

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the present invention;

[0028] Among them, 1-circular opening, 2-cargo oil pipe, 3-opening support tooling, 31-upper arc plate, 32-soft plastic strip, 33-lower side plate, 34-spring, 35-lower arc plate, 36-upper side plate. DETAILED DESCRIPTION

[0029] The present invention will be further described in conjunction with the accompanying drawings.

[0030] like Figure 2 As shown, a slipway launching hole support, the present invention provides an opening that cannot be blocked, and a cargo oil pipe 2 passes through the opening, a slipway launching hole support tool 3 of the present invention, four opening support toolings are arranged between the circular opening 1 and the cargo oil pipe 2 at equal intervals along the circumference of the circular opening.

[0031] like Figure 3 , 4As shown, the perforated support structure 3 of the present invention is a snap-fit ​​structure, which consists of an upper support body and a lower support body. The upper support body has an upper arc plate 31, and the upper arc plate has upper side plates 36 that are retracted downward on both sides; the lower support body has a lower arc plate 35, and the lower arc plate has lower side plates 33 that are retracted upward on both sides. The upper support body and the lower support body are connected by a spring 34. The curvature of the upper arc plate 31 is consistent with the radius of the circular opening 1, and the curvature of the lower arc plate 35 is consistent with the radius of the outer wall of the cargo oil pipe 2. The upper side plate and the lower side plate are connected by a one-way compression spring 34 to ensure that the structure is always in a supported state. The arc plate and the side plate are welded to maintain an angle. The outer surfaces of the upper arc plate and the lower arc plate are affixed with epoxy resin, which plays a role in increasing friction resistance and also plays a buffering role between structures. The upper arc plate is provided with a soft plastic strip 32 along the arc direction, which can play a role in front and back positioning and is directly stuck on the outside of the opening.

[0032] The width of the upper curved plate is M, which is twice the thickness of the strong frame plate at the opening. The width of the lower curved plate is N, which is twice the width of the upper arc plate, N=2M. The upper curved plate and the lower curved plate form an angle A of 90°

Claims

1. A ship berth launching opening support, characterized in that: A circular opening (1) is provided on the berth strong frame, a cargo oil pipe (2) is located in the circular opening, and an opening support tooling (3) is provided between the cargo oil pipe and the opening; The hole support tooling comprises an upper support body and a lower support body, wherein the upper support body is provided with an upper arc-shaped plate (31) on the top, and upper side plates (36) which are retracted downwards are provided on both sides of the upper arc-shaped plate; the lower support body is provided with a lower arc-shaped plate (35), and lower side plates (33) which are retracted upwards are provided on both sides of the lower arc-shaped plate, and the upper support body and the lower support body are connected by a spring (34); The upper curved plate and the lower curved plate both have an upward curvature, the upper curved plate fits with the inner wall of the circular opening, and the lower curved plate fits with the outer wall of the cargo oil pipe.

2. A slipway launching opening support according to claim 1, characterized in that: The curvature of the upper curved plate is consistent with the radius of the circular opening, and the curvature of the lower curved plate is consistent with the radius of the outer wall of the cargo oil pipe.

3. A slipway launching opening support according to claim 1, characterized in that: Continuous soft plastic strips (32) are arranged on both sides of the upper arc-shaped plate and along the length direction of the upper arc-shaped plate.

4. A slipway launching opening support according to claim 1, characterized in that: The opening support fixtures are used in pairs, and more than one pair of opening support fixtures are arranged at equal intervals between the cargo oil pipe and the circular opening.

5. The ship berth launching opening support according to claim 1, characterized in that: The width of the upper arc plate is M, which is twice the thickness of the strong frame plate at the circular opening. The width of the lower arc plate is N, which is twice the width of the upper arc plate, N=2M.

6. A slipway launching opening support according to claim 1, characterized in that: The upper curved plate and the lower curved plate form an angle A, 90° <A<120°。 7. The ship berth launching opening support according to claim 1, characterized in that: The upper side plate and the upper arc plate form an angle C, 45° <C<90°。 8. The ship platform launching opening support according to claim 1, characterized in that: The lower side plate and the lower arc plate form an angle B, 45° <B<90°。 9. The ship platform launching opening support according to claim 1, characterized in that: The length of the lower arc-shaped plate is greater than the length of the upper arc-shaped plate.

10. The ship platform launching opening support according to claim 1, characterized in that: The outer surfaces of the upper curved plate and the lower curved plate are pasted with epoxy resin.

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