A special-shaped rubber fairing flange pressing plate and its processing method

Abstract

The present invention relates to the technical field of fairing pressing plates, in particular to a special-shaped rubber fairing flange pressing plate and its processing method, including a watertight flange, a pressing plate one, a pressing plate two and bolts. A sliding opening is provided on the watertight flange, and buckling grooves matched with the sliding buckle are provided on the pressing plate one and the pressing plate two. Both the pressing plate one and the pressing plate two are used to cooperate with the watertight flange, and the pressing plate one and the pressing plate two are separately matched with the watertight flange. When the pressing plate one and the pressing plate two are matched with the watertight flange, a fixing groove is formed. The pressing plate one or the pressing plate two is fixed to the watertight flange through bolts. The present invention is applicable to the connection between metal and rubber of large special-shaped rubber fairings, meeting the requirements of fixing, watertightness and load-bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of fairing pressing plates, and specifically to a special-shaped rubber fairing flange pressing plate and a processing method thereof. Background Art

[0002] In the field of underwater acoustic technology, rubber materials and components can not only undertake acoustic functions such as sound absorption, sound transmission, sound reflection, and damping and vibration reduction, but also play an important role in sealing and other parts. In underwater acoustic applications, problems of connection and combination between different materials are often encountered. For rubber, one of the most common connection problems is the connection with metal. The metal-rubber connection methods mainly include vulcanization, bonding, and mechanical butt joint. The vulcanization method means that under the action of vulcanization equipment, the vulcanization molding of rubber and the combination with metal are realized in situ at one time. This method needs to be carried out under high temperature and high pressure, and the bonding surface needs to be treated by roughening, cleaning, and coating primer, etc. When the sizes of the two connected parties are too large or in the field, the vulcanization method will no longer be applicable. The bonding method means that the two materials are combined together through an adhesive at the butt joint interface of the two materials, which is suitable for on-site construction. However, the disadvantage of this method is that the adhesive has high requirements for the cleanliness, hydrophilicity and hydrophobicity of the bonding surface. The bonding joint needs to connect two materials with extremely different properties such as modulus and heat conduction, and adapt to their changes, and the adhesive is sensitive to temperature and humidity. The connection between large components is restricted by on-site process conditions, and mechanical connection methods are mostly used. Flange butt joint is the most common mechanical connection method. Large flanges have problems such as difficult processing, deformation under the action of self-weight or external force, and difficult positioning during the installation process. In addition, since one of the two butting parties is a rigid metal material and the other is an easily deformable rubber material, it is impossible to connect and fix by bolts and other components. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a special-shaped rubber fairing flange pressing plate and a processing method thereof.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A special-shaped rubber fairing flange pressing plate, comprising a watertight flange, a pressing plate one, a pressing plate two, and bolts. A sliding opening is provided on the watertight flange, and buckling grooves matching with the sliding buckle are provided on the pressing plate one and the pressing plate two. Both the pressing plate one and the pressing plate two are used to cooperate with the watertight flange, and the pressing plate one and the pressing plate two cooperate with the watertight flange separately. When the pressing plate one and the pressing plate two cooperate with the watertight flange, a fixing groove is formed. The pressing plate one or the pressing plate two is fixed to the watertight flange through bolts.

[0005] Preferably, a fitting gap is provided after the watertight flange cooperates with the pressing plate one or the pressing plate two.

[0006] Preferably, the fitting gap is 3-5 mm.

[0007] To achieve the above object, the present invention also provides the following technical solution: A processing method for a special-shaped rubber fairing flange pressing plate, the steps of which are as follows:

[0008] 1) Use a multi-axis CNC gantry machining center to integrally machine the shapes of the watertight flange and the pressing plate according to the line type;

[0009] 2) After the overall machining of the pressing plate is completed, perform decomposition cutting to obtain individual pressing plates. For the parts with sudden changes in the bending angles of the pressing plates, increase the number of bolts;

[0010] 3) During installation and construction, insert the rubber clamping section into the fixed groove of the watertight flange and use the first set of pressing plates to assist in forming;

[0011] 4) After the rubber is formed, replace the first set of pressing plates with the second set of pressing plates. The second set of pressing plates has a 2-3% compressive deformation amount for the clamped section rubber compared to the first set, playing a role in locking and sealing.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention draws on the principles of interference fit and O-ring, and uses the method of physical combination to combine two materials with moduli differing by several orders of magnitude, namely metal and rubber. The connection and fixation of the pressing plate of the present invention not only omits the harsh process conditions of vulcanization bonding, but also avoids the influence of metal components on the sound transmission effect;

[0013] 1) The process design of two sets of pressing plates. The first set is used for the rubber forming at the joint, and the second set is used for fixation. The second set has a 2-3% compressive deformation amount compared to the first set. It avoids the loss of pre-tightening force due to the shrinkage during the rubber forming process and the occurrence of detachment.

[0014] 2) A 3-5 mm fitting clearance is reserved between the tangential direction of the slip buckle and the pressing plate, avoiding the situation where the metal mating surface replaces the rubber to bear the force and ensuring the rubber is compacted.

[0015] 3) The bolts are located below the center of the connection surface to ensure that the pressure of the pressing plate acts on the rubber. Description of the Drawings

[0016] Figure 1 is a sectional view of the present invention;

[0017] Figure 2 is an overall view of the flange and the pressing plate in cooperation of the present invention.

[0018] In the figure: 1, watertight flange; 2, pressing plate; 3, bolt; 4, slip buckle, 5, fastening groove; 6, fitting clearance. Detailed Embodiment

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 2 , the present invention provides a technical solution: a special-shaped rubber fairing flange pressing plate, including a watertight flange, a pressing plate one, a pressing plate two and bolts. A sliding opening is provided on the watertight flange, and buckling grooves for cooperating with the sliding buckle are provided on the pressing plate one and the pressing plate two. Both the pressing plate one and the pressing plate two are used to cooperate with the watertight flange, and the pressing plate one and the pressing plate two are separately cooperated with the watertight flange. When the pressing plate one and the pressing plate two cooperate with the watertight flange, a fixing groove is formed. The pressing plate one or the pressing plate two is fixed to the watertight flange through bolts, and a single pressing plate is fixed to the watertight flange with two or more bolts.

[0021] As Figure 1 shown in the positional relationship between the dash-dotted line and the bolt 3, the bolt 3 is characterized in that the mounting hole is below the normal center of the connection surface. The direction of the connection surface is parallel to the linear surface of the rubber fairing, so as to ensure that the bolt is perpendicular to the linear surface.

[0022] By setting the pressing plate one and the pressing plate two into two sets of pressing plates, the two sets of pressing plates are characterized in that the first set is used for rubber molding at the joint and is removed after molding, and the second set is used for fixing. The second set has a compression deformation amount of 2-3% compared with the first set.

[0023] A fitting gap is provided after the watertight flange is fitted with the pressing plate one or the pressing plate two, and the fitting gap is 3-5 mm;

[0024] The sliding buckle of the watertight flange cooperates with the buckling groove of the pressing plate for rough positioning, and a fitting gap of 3-5 mm is left between the tangential direction and the pressing plate to ensure that the rubber is compacted.

[0025] A processing method for a special-shaped rubber fairing flange pressing plate, and its steps are as follows:

[0026] 1) Adopt a multi-axis CNC gantry machining center to integrally machine the shapes of the watertight flange and the pressing plate according to the linear shape;

[0027] 2) After the overall machining of the pressing plate is completed, it is disassembled and cut to obtain a single pressing plate. For the sudden change part of the pressing plate bend angle, the number of bolts is increased;

[0028] 3) During installation and construction, the rubber clamping section is installed in the fixing groove of the watertight flange, and the first set of pressing plates is used to assist in molding;

[0029] 4) After the rubber is formed, the first set of pressing plates is replaced with the second set of pressing plates. The second set of pressing plates increases the compressive deformation of the rubber in the clamping section by 2-3% compared with the first set, playing a role in locking and sealing.

[0030] Through this technical solution, two sets of pressing plates are used to achieve the purpose of secondary pre-tightening. The clearance slip buckle and the bolts below the center of the connection surface ensure that the pressure of the pressing plate acts on the rubber, while solving the problems of fixation and watertightness. The present invention does not require adhesives, and can reduce the requirements for surface cleanliness and environmental temperature and humidity during construction, and is particularly suitable for on-site docking of large metal-rubber components that do not have vulcanization and bonding conditions.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An irregular rubber fairing flange pressing plate, characterized in that: It includes a watertight flange, a first pressing plate, a second pressing plate and bolts. A sliding opening is provided on the watertight flange. Clamping grooves matching with the sliding buckle are provided on the first pressing plate and the second pressing plate. Both the first pressing plate and the second pressing plate are used to cooperate with the watertight flange, and the first pressing plate and the second pressing plate are separately matched with the watertight flange. When the first pressing plate and the second pressing plate cooperate with the watertight flange, a fixing groove is formed. The first pressing plate or the second pressing plate is fixed to the watertight flange through bolts. A fitting gap is provided after the watertight flange is fitted with the first pressing plate or the second pressing plate. The fitting gap is 3-5 mm. The processing method of the special-shaped rubber fairing flange pressing plate comprises the following steps: 1) Adopt a multi-axis CNC gantry machining center to integrally machine the shapes of the watertight flange and the pressing plate according to the line type; 2) After the overall machining of the pressing plate is completed, perform decomposition cutting to obtain individual pressing plates. For the sudden change parts of the pressing plate bends, increase the number of bolts; 3) During installation construction, install the rubber clamping section into the fixing groove of the watertight flange, and use the first set of pressing plates formed by the first pressing plate to assist in forming; 4) After the rubber is formed, use the second set of pressing plates formed by the second pressing plate to replace the first set of pressing plates. The second set of pressing plates increases the compression deformation amount of the clamping section rubber by 2-3% compared with the first set of pressing plates, playing a role in locking and sealing.

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