Screw fixing structure at fairing cap

Abstract

The utility model provides a screw fixing structure at a fairing cap, and relates to the technical field of fairing cap fixing and mounting, the screw fixing structure comprises a propeller hub, the fairing cap is mounted at a notch of the propeller hub, the mounting surface of the fairing cap is matched with the notch surface of the propeller hub, and the mounting surface of the fairing cap is in fit connection with the notch surface of the propeller hub; the fixing assembly is used for limiting and fixing connection of the fairing cap and the propeller hub, the fixing assembly comprises a fixing screw, the fixing screw is installed at the left end of the inner side of the fairing cap, and the fixing screw is in threaded connection with the propeller hub; the fixing assembly further comprises an anti-loosening wedge block, the anti-loosening wedge block is fixedly installed in the middle of the inner side of the flow guide cap, the anti-loosening wedge block makes close contact with the right end face of the fixing screw, the anti-loosening wedge block is used for limiting and blocking the fixing screw, and an anti-loosening cover is arranged on the outer side of the anti-loosening wedge block. The fixing screw is limited and fixed through the anti-loosening wedge block and the anti-loosening cover, and convenience is provided for installation or disassembly and maintenance work of the flow guide cap.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow guide cap fixed mounting technical field, concretely is a screw fixing structure at flow guide cap. BACKGROUND

[0002] The flow guide cap of ship is the flow guide device of the front end of the hub of the ship, when the internal parts of the hub are maintained and replaced, the flow guide cap needs to be disassembled, however, the permanent anti-loosening method is generally used in the ship industry to weld the fixing screw of the flow guide cap, thereby causing the flow guide cap to be inconvenient to disassemble and maintain, and the maintenance effect is poor and the maintenance cost is high.

[0003] To solve the above problems, a screw fixing structure at a flow guide cap is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] To solve the problems in the background art, the utility model provides a screw fixing structure at a flow guide cap.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A screw fixing structure at a flow guide cap, comprising a hub, a flow guide cap is installed at the notch of the hub, the mounting surface of the flow guide cap is matched with the notch surface of the hub, and the mounting surface of the flow guide cap is connected with the notch surface of the hub in a bonded manner.

[0007] A fixing assembly is used to limit and fix the connection of the flow guide cap and the hub, the fixing assembly comprises a fixing screw, the fixing screw is installed at the inner left end of the flow guide cap, and the fixing screw is threadedly connected with the hub.

[0008] The fixing assembly further comprises an anti-loosening wedge block, the anti-loosening wedge block is fixedly installed at the inner middle part of the flow guide cap, the anti-loosening wedge block is in close contact with the right end surface of the fixing screw, the anti-loosening wedge block is used to limit and resist the fixing screw, and the outer side of the anti-loosening wedge block is provided with an anti-loosening cover, and the anti-loosening cover is used to press and fix the anti-loosening wedge block.

[0009] Preferably, the anti-loosening cover is fixedly installed on the outer side surface of the flow guide cap through two groups of fastening screws.

[0010] Preferably, a sealing ring is arranged between the left end of the flow guide cap and the hub, and the fixing screw passes through the sealing ring.

[0011] Preferably, a fixed bolt is arranged at the inner middle part of the anti-loosening wedge block, and the fixed bolt is used to limit and fix the connection between the anti-loosening wedge block and the flow guide cap.

[0012] Preferably, an anti-loosening glue layer is arranged in the threaded hole at the installation position of the fixing screw, the fixed bolt and the fastening screw.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] In the scheme, the head end of the fixed screw is installed with the anti-loose wedge block, the fixed screw can be limited and resisted by the anti-loose wedge block, so that the loosening of the fixed screw in the long-time use process is effectively avoided, in addition, the outer side of the anti-loose wedge block is also provided with the anti-loose cover, the anti-loose wedge block can be pressed and fixed by the anti-loose cover, so that the stability of the anti-loose wedge block installed in the flow guide cap is effectively improved, the strength and stability of the anti-loose wedge block resisting the fixed screw are further improved, and the anti-loose effect is further strengthened, the utility model realizes the limiting and fixing of the fixed screw through the anti-loose wedge block and the anti-loose cover, compared with the welding fixing of the fixed screw in the traditional technology, the fixed structure provided by the utility model provides convenience for the installation or dismounting of the flow guide cap, improves the maintenance efficiency and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a sectional structure schematic view of the utility model.

[0016] In the drawing: 1, hub; 2, flow guide cap; 3, sealing ring; 4, fixed screw; 5, anti-loose wedge block; 6, fixed bolt; 7, anti-loose cover; 8, fastening screw. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiment of the application is to solve the problems in the above background art, and the general idea is as follows: the anti-loose wedge block 5 is arranged at the head end of the fixed screw 4, the anti-loose cover 7 is arranged at the outer side of the anti-loose wedge block 5, the fixed screw 4 is limited and fixed by the anti-loose wedge block 5 and the anti-loose cover 7, compared with the welding fixing of the fixed screw 4 in the traditional technology, the fixed structure provided by the utility model provides convenience for the installation or dismounting maintenance work of the flow guide cap 2.

[0018] Embodiment: refer to Figure 1 As shown in the drawing, the screw fixing structure of the flow guide cap in the embodiment comprises a hub 1, the hub 1 is installed with the flow guide cap 2 at the notch, the installation surface of the flow guide cap 2 is matched with the notch surface of the hub 1, and the installation surface of the flow guide cap 2 is connected with the notch surface of the hub 1 in a manner of adhesion; a fixed assembly is used for limiting and fixing the connection between the flow guide cap 2 and the hub 1, and the fixed assembly comprises a fixed screw 4, the fixed screw 4 is installed at the inner side left end of the flow guide cap 2, and the fixed screw 4 is connected with the hub 1 in a threaded manner; the fixed assembly further comprises an anti-loose wedge block 5, the anti-loose wedge block 5 is fixedly installed at the inner side middle part of the flow guide cap 2, the anti-loose wedge block 5 is in close contact with the right end surface of the fixed screw 4, and the anti-loose wedge block 5 is used for limiting and resisting the fixed screw 4; the outer side of the anti-loose wedge block 5 is provided with an anti-loose cover 7, and the anti-loose cover 7 is used for pressing and fixing the anti-loose wedge block 5.

[0019] The connection between the flow guide cap 2 and the hub 1 is fastened by the fixing screw 4 first, then the anti-loosening wedge 5 is installed at the head end of the fixing screw 4, the fixing screw 4 is limited by the anti-loosening wedge 5, so that the loosening of the fixing screw 4 in the long-term use process is avoided, in addition, the anti-loosening cover 7 is arranged outside the anti-loosening wedge 5, the anti-loosening wedge 5 is limited by the anti-loosening cover 7, so that the stability of the anti-loosening wedge 5 limiting the fixing screw 4 is improved, and the anti-loosening effect is further improved.

[0020] In some examples, the anti-loosening cover 7 is fixedly installed on the outer side of the flow guide cap 2 by two groups of fastening screws 8.

[0021] In some examples, the sealing ring 3 is arranged between the left end of the flow guide cap 2 and the hub 1, and the fixing screw 4 penetrates through the sealing ring 3, and the sealing ring 3 plays a sealing and waterproof role.

[0022] In some examples, the fixing bolt 6 is arranged in the middle of the inner side of the anti-loosening wedge 5, and the fixing bolt 6 is used for limiting and fixing the connection between the anti-loosening wedge 5 and the flow guide cap 2, the anti-loosening wedge 5 is limited by the fixing bolt 6, so that the anti-loosening wedge 5 can be fixedly installed in the flow guide cap 2, and the anti-loosening wedge 5 can stably limit and resist the fixing screw 4.

[0023] In some examples, the anti-loosening glue layer is arranged in the threaded hole of the fixing screw 4, the fixing bolt 6 and the fastening screw 8, and the anti-loosening glue layer arranged in the threaded hole is mainly used for improving the reliability of the threaded connection, preventing the threaded loosening caused by vibration, impact or long-term use, and effectively filling the small gap between the threads to form a tough sealing layer, so that the stability of the threaded connection can be maintained even in a vibrating environment.

[0024] The working principle of the utility model is:

[0025] The anti-loosening wedge 5 is arranged at the head end of the fixing screw 4, the fixing screw 4 is stably limited by the anti-loosening wedge 5, so that the loosening of the fixing screw 4 in the use process is avoided;

[0026] In addition, the anti-loosening cover 7 is arranged outside the anti-loosening wedge 5, the anti-loosening wedge 5 is pressed and fixed by the anti-loosening cover 7, so that the installation stability of the anti-loosening wedge 5 is improved, and the resistance of the anti-loosening wedge 5 to the fixing screw 4 is further improved.

[0027] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A screw fixing structure at a guide cap, characterized in that: It comprises a propeller hub (1), a guide cap (2) is installed at the notch of the propeller hub (1), the installation surface of the guide cap (2) is adapted to the notch surface of the propeller hub (1), and the installation surface of the guide cap (2) is fitted and connected to the notch surface of the propeller hub (1); A fixing assembly, the fixing assembly being used to limit and fix the connection between the guide cap (2) and the propeller hub (1), the fixing assembly comprising a fixing screw (4), the fixing screw (4) being mounted on the inner left end of the guide cap (2), and the fixing screw (4) being threadedly connected to the propeller hub (1); The fixing assembly further comprises an anti-loosening wedge (5), the anti-loosening wedge (5) being fixedly mounted on the inner middle portion of the guide cap (2), the anti-loosening wedge (5) being in close contact with the right end face of the fixing screw (4), the anti-loosening wedge (5) being used to limit and resist the fixing screw (4), and an anti-loosening cover (7) being provided on the outer side of the anti-loosening wedge (5), the anti-loosening cover (7) being used to press and fix the anti-loosening wedge (5).

2. The screw fixing structure at the guide cap according to claim 1, characterized in that: The anti-loosening cover (7) is fixedly mounted on the outer side of the deflector cap (2) by two sets of fastening screws (8).

3. The screw fixing structure at the guide cap according to claim 2, characterized in that: A sealing ring (3) is provided between the left end of the guide cap (2) and the propeller hub (1), and the fixing screw (4) passes through the sealing ring (3).

4. The screw fixing structure at the guide cap according to claim 3, characterized in that: A fixing bolt (6) is provided in the middle of the inner side of the anti-loosening wedge (5), and the fixing bolt (6) is used to limit and fix the connection between the anti-loosening wedge (5) and the guide cap (2).

5. The screw fixing structure at the guide cap according to claim 4, characterized in that: The threaded holes at the installation locations of the fixing screw (4), the fixing bolt (6) and the fastening screw (8) are all provided with an anti-loosening glue layer.

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