CN-121989480-A - Integrated water collecting pipe for racing boat and preparation method thereof

CN121989480ACN 121989480 ACN121989480 ACN 121989480ACN-121989480-A

Abstract

The invention provides a preparation method of an integrated water collecting pipe for a racing boat, which comprises the following steps of preparing pedal adjusting slide rails, symmetrically installing the pedal adjusting slide rails on two sides of an inner insert die, uniformly paving prepreg carbon fiber cloth on the surface of the inner insert die, embedding a water collecting pipe body and a magnet body into corresponding grooves on the inner insert die, paving PMI foam on the inner insert die, and solidifying and molding the inner insert die paved with foam to integrally mold the water collecting pipe and the inner insert. The integrated structure of the water collecting pipe, the inner insert and the hull is adopted, the integrated structure is free of splicing gaps and later assembly marks, a complete and coherent integral stress structure is formed, the strength, the rigidity and the assembly precision of the water collecting pipe are improved from the structural source, the integral flow mechanical property of the racing boat is optimized, and the integrated structure can adapt to severe use requirements under the working conditions of high-speed running and complex water flow of the high-end racing boat.

Inventors

Chou Weipeng
XU JUAN
LI XIAOJUAN
GAO SHUYIN
XIN JUN

Assignees

威海平和复合材料制品有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (10)

1. The preparation method of the integrated water collecting pipe for the racing boat is characterized by comprising the following steps of: s1, preparing pedal adjusting slide rails, and symmetrically installing the pedal adjusting slide rails on two sides of an insert mold; S2, uniformly paving the presoaked carbon fiber cloth on the surface of the insert mold; S3, embedding the water collecting pipe body and the magnet body into corresponding grooves on the inner insert die; s4, paving PMI foam on the insert mold; s5, solidifying and forming the inner insert die paved with the foam, and integrally forming the water collecting pipe and the inner insert.
2. The method for manufacturing an integrated header pipe for a racing boat according to claim 1, wherein in step S1, when the pedal adjusting slide rail is manufactured, 200g/m2 of double-layer 0 °/90 ° prepreg carbon fiber cloth is used to be laid on a metal mold to form a preform, and then the preform is fixedly installed on an insert mold.
3. The method for manufacturing an integrated header pipe for a racing boat according to claim 1, wherein in step S2, a double-layer 0 °/90 ° prepreg carbon fiber cloth of 100g/m2 is laid on the insert mold, and the number of laid layers is not less than two.
4. The method for manufacturing an integrated water collecting pipe for a racing boat according to claim 1, wherein in the step S3, before the water collecting pipe body is embedded into the insert mold, an interface adhesive is applied to the outer surface of the water collecting pipe body in advance, the thickness of the interface adhesive is applied to the surface of the water collecting pipe body to be 0.05-0.15mm, a magnet body is embedded into a plug mounting area of a water inlet of the water collecting pipe, and the magnet body and an insert layer are wrapped and fixed through a carbon fiber prepreg cloth.
5. The method for manufacturing an integrated header for racing boats according to claim 1, wherein in step S4, the PMI foam has a thickness of 2-5mm and a density of 75-110kg/m3, and the cut shape of the PMI foam is matched with the curved shape of the inner insert mold surface.
6. The method for preparing the integrated water collecting pipe for the racing boat, which is disclosed in claim 1, is characterized in that in the step S5, an autoclave is used for curing and forming, the curing step is that the temperature rising rate is 1-3 ℃ per minute, the first curing temperature is 80-100 ℃ and the heat preservation time is 30-60min, the temperature is further raised to the second curing temperature of 120-135 ℃ and the heat preservation time is 90-120min, the curing pressure is 0.3-0.6MPa, the vacuum degree is not lower than-0.095 MPa, and after the curing is completed, the temperature is reduced to below 60 ℃ at a rate of not more than 2 ℃ per minute, and then the tank is opened for demoulding.
7. The method for manufacturing an integrated header for a racing boat according to claim 1, further comprising the steps of: S6, at least one layer of prepreg carbon fiber cloth is paved in the racing boat body, at least one layer of glass cloth transition layers with unequal widths are paved on the upper side and the lower side of the bottom of the racing boat body, the positions of the transition layers correspond to the positions of the inserts, and then the formed inserts are placed in the boat body; s7, alternately paving 75g/m2 of carbon fiber cloth and 100g/m2 of carbon fiber cloth on the joint of the insert and the hull; S8, performing integral co-curing molding on the integral structure after layering.
8. The method for manufacturing an integrated header pipe for a racing boat according to claim 7, wherein in step S6, the width of the glass cloth transition layer at the upper part is larger than the width of the glass cloth transition layer at the lower part.
9. The integrated water collecting pipe for the racing boat is characterized by comprising a water collecting pipe body, wherein the water collecting pipe body and an inner insert are integrally formed, the inner insert and a boat body are integrally formed, and the water collecting pipe body, the inner insert and the boat body are made of carbon fiber materials.
10. The integrated water collecting pipe for racing boats according to claim 9, wherein at least one magnet body is embedded in an inner insert at a water inlet end of the water collecting pipe body, the magnet body, the water collecting pipe body and the inner insert are integrally formed, a magnetic plug is arranged at the water inlet end, and the magnetic plug is adsorbed with the magnet body.

Description

Integrated water collecting pipe for racing boat and preparation method thereof Technical Field The invention relates to the technical field of boat manufacturing, in particular to an integrated water collecting pipe for a racing boat and a preparation method thereof. Background At present, the prior art for manufacturing and assembling the water collecting pipe of the racing boat is more traditional, and has the core process that in the manufacturing process of the inner insert of the racing boat (which is mostly made of carbon fiber composite materials and matched with the material of the boat body), only the mounting position of the water collecting pipe is reserved, the synchronous pre-buried forming of the water collecting pipe is not carried out, and after the inner insert and the boat body are manufactured through an integral forming process (autoclave curing process), the water collecting pipe manufactured by independent processing is assembled on the reserved mounting position of the inner insert by adopting the modes of bolting, bonding, assembling and the like, so that the assembly of the water collecting pipe is completed. The traditional manufacturing and assembling mode is a technical scheme commonly adopted in the industry at present, but is limited by the technical characteristics of the traditional manufacturing and assembling mode, has a plurality of technical defects which are difficult to overcome, severely restricts the improvement of the overall performance of the racing boat, cannot meet the severe application requirements of the high-end racing boat, and has the following specific defects: Firstly, the water collecting pipe manufactured by the prior traditional process has insufficient strength and fatigue resistance. Because the water collecting pipe is connected with the ship body in a later split assembly mode, uneven assembly gaps inevitably exist between the water collecting pipe and the ship body, the structure consistency of the joint part is poor, an integral stress structure cannot be formed, and the stress transmission of the water collecting pipe is unsmooth. Under the working conditions of high-speed running, water flow impact, hull vibration and the like of the racing boat, the joint part of the water collecting pipe and the hull becomes a stress concentration point, the problems of joint loosening, bonding falling, bolt loosening, even breakage and the like are easily caused by long-term bearing of periodical water flow impact force and hull vibration load, further the water collecting pipe is damaged and leaked to influence the normal function of the racing boat, potential safety hazards such as water accumulation in a racing boat cabin are also caused by the failure of the water collecting pipe when the water collecting pipe is serious, particularly in the high-end racing boat, the defects can directly influence the racing result and even cause safety accidents, meanwhile, if the water collecting pipe is made of a metal material, the weight of the water collecting pipe is large, the water collecting pipe is contrary to the light development trend of the carbon fiber racing boat, the material difference between the metal material and the boat is large, the thermal expansion coefficient is different, the joint part is easily affected by temperature change in the long-term use process, the problems of gap expansion, sealing failure and the like are easily caused, and the structural strength and the stability of the water collecting pipe are further reduced, and the service load under the complex working conditions of the racing boat is difficult to bear if the water collecting pipe is made of a common composite material. Secondly, the water collecting pipe manufactured by the traditional process is extremely low in assembly precision. On one hand, the reserved water collecting pipe installation position in the manufacturing process of the inner insert is influenced by factors such as precision of processing equipment, precision of a die, operation process and the like, and the problems such as size deviation, position deviation and the like are easy to occur, on the other hand, the water collecting pipe manufactured by independent processing also has processing errors, and in the later assembly process, the positioning reference is not uniform, the positioning precision is insufficient, so that the problems such as axial deviation, inclined end face, loose connection with a ship body, uneven and the like frequently occur after the water collecting pipe is assembled, and the assembly precision of the water collecting pipe cannot be ensured. The assembly accuracy of the water collecting pipe directly influences the fluid conveying efficiency, the insufficient accuracy can cause the increase of the fluid flow resistance, the water drainage disorder of the racing boat is reduced, the extra running resistance is generated, the running speed and the control stability of the ra