Low ship propeller

Abstract

The utility model discloses a low ship propeller which comprises a propeller shaft, a propeller blade mounting seat, a propeller blade and a blade fixing block, and the propeller shaft is fixed in the center of one end of the propeller blade mounting seat. A plurality of propeller blade mounting grooves used for fixing propeller blades are formed in the side face of the propeller blade mounting base at equal intervals, the propeller blades are mounted in the propeller blade mounting grooves, and a fixing block connecting screw rod is fixedly arranged in the center of the other end of the propeller blade mounting base; an anti-falling pin mounting groove is formed in the fixing block connecting screw rod, an anti-falling pin is arranged in the anti-falling pin mounting groove, and the end, away from the propeller blade mounting base, of the anti-falling pin is rotationally connected with the fixing block connecting screw rod through a rotating shaft; the connecting strength of the propeller blade and the propeller blade mounting seat is higher, and the propeller blade is easy to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a low ship propeller. Background Art

[0002] A propeller is a device that converts the engine's rotational power into propulsion by rotating the blades in the air or water. It can have two or more blades connected to the hub, and the rear side of the blade is a helical surface or a propeller similar to a helical surface. There are many types of propellers, and they are widely used, such as propellers for aircraft and ships.

[0003] At present, in order to reduce the maintenance cost of propellers, blades that are easily damaged are generally designed to be detachable structures, such as a low-resistance ship propeller with announcement number CN218751336U. However, the existing blades are generally fixed by connecting structures such as bolts. This method not only has low connection strength, but also the bolts are more laborious to remove. Utility Model Content

[0004] The utility model aims to provide a low ship propeller to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low ship propeller, comprising a propeller shaft, a propeller blade mounting seat, a propeller blade and a blade fixing block, the propeller shaft being fixed to the center position of one end of the propeller blade mounting seat, a plurality of blade mounting grooves for fixing the propeller blades being evenly spaced on the side surface of the propeller blade mounting seat, the propeller blades being installed in the blade mounting grooves, a fixing block connecting screw being fixedly arranged at the center position of the other end of the propeller blade mounting seat, an anti-dropout pin mounting groove being arranged on the fixing block connecting screw, an anti-dropout pin being arranged in the anti-dropout pin mounting groove, an end of the anti-dropout pin away from the propeller blade mounting seat being rotatably connected to the fixing block connecting screw through a rotating shaft, a threaded groove matching with the fixing block connecting screw being arranged at the end of the blade fixing block, and an anti-dropout groove matching with the anti-dropout pin being arranged inside the blade fixing block.

[0006] Preferably, a blade baffle is provided on one end of the propeller blade mounting seat close to the propeller shaft, and the blade baffle and the propeller blade mounting seat are an integrated structure.

[0007] Preferably, a connecting block for connecting the propeller blade to a propeller blade mounting seat is fixedly provided at the bottom of the propeller blade.

[0008] Preferably, a reinforcement piece is provided on each side of the connection position between the propeller blade and the connecting block, the reinforcement piece, the connecting block and the propeller blade are an integrated structure, and a reinforcement piece slot for matching the reinforcement piece is provided at the top of the blade mounting groove.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the propeller blades of the utility model are installed in the blade mounting grooves on the propeller blade mounting seat in a sliding manner, and the blade fixing block used to prevent the propeller blades from detaching is installed on the fixing block connecting screw in a threaded connection manner, and an anti-detachment pin is installed in the fixing block connecting screw through a rotating shaft, and an anti-detachment groove cooperating with the anti-detachment pin is provided inside the blade fixing block. When the propeller rotates, the anti-detachment pin will be thrown out of the anti-detachment pin mounting groove and enter the anti-detachment groove under the action of centrifugal force. Through the restriction of the anti-detachment pin, the blade fixing block can be effectively prevented from loosening or even falling off due to the influence of vibration factors. When the propeller blades need to be removed, the anti-detachment pin can be returned to the anti-detachment pin mounting groove by knocking. In summary, the connection strength between the propeller blades and the propeller blade mounting seat of the utility model is higher, and the propeller blades are easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the propeller blade mounting seat and the fixing block connecting screw of the utility model;

[0013] Figure 3 It is a schematic structural diagram of the cooperation between the blade fixing block and the fixing block connecting screw of the utility model;

[0014] Figure 4 It is a schematic diagram of the internal structure of the blade fixing block of the utility model;

[0015] Figure 5 It is a structural schematic diagram of the propeller blade of the utility model.

[0016] In the figure: 1. propeller shaft; 2. propeller blade mounting seat; 3. propeller blade; 4. blade fixing block; 5. blade mounting groove; 6. reinforcement slot; 7. anti-slip groove; 8. anti-slip pin; 9. anti-slip pin mounting groove; 10. fixing block connecting screw; 11. blade baffle; 12. reinforcement; 13. connecting block; 14. threaded groove. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0018] See also Figure 1-5 In an embodiment of the utility model, a low ship propeller comprises a propeller shaft 1, a propeller blade mounting seat 2, a propeller blade 3 and a blade fixing block 4, the propeller shaft 1 is fixed to the center position of one end of the propeller blade mounting seat 2, a plurality of blade mounting grooves 5 for fixing the propeller blade 3 are evenly spaced on the side of the propeller blade mounting seat 2, the propeller blade 3 is installed in the blade mounting groove 5, a fixing block connecting screw 10 is fixedly arranged at the center position of the other end of the propeller blade mounting seat 2, an anti-dropping pin mounting groove 9 is arranged on the fixing block connecting screw 10, an anti-dropping pin 8 is arranged in the anti-dropping pin mounting groove 9, one end of the anti-dropping pin 8 away from the propeller blade mounting seat 2 is rotatably connected to the fixing block connecting screw 10 through a rotating shaft, a threaded groove 14 matching with the fixing block connecting screw 10 is arranged at the end of the blade fixing block 4, and an anti-dropping groove 7 matching with the anti-dropping pin 8 is arranged inside the blade fixing block 4.

[0019] A blade baffle 11 is provided on one end of the propeller blade mounting seat 2 close to the propeller shaft 1 , and the blade baffle 11 and the propeller blade mounting seat 2 are an integrated structure.

[0020] A connecting block 13 for connecting the propeller blade 3 to the propeller blade mounting seat 2 is fixedly provided at the bottom of the propeller blade 3, and a reinforcement member 12 is provided on each side of the connection position between the propeller blade 3 and the connecting block 13. The reinforcement member 12, the connecting block 13 and the propeller blade 3 are an integrated structure, and a reinforcement member slot 6 for matching the reinforcement member 12 is provided at the top of the blade mounting groove 5. The reinforcement member 12 can increase the strength of the propeller blade 3.

[0021] The working principle of the utility model is as follows: the propeller blade 3 of the utility model is installed in the blade mounting groove 5 on the propeller blade mounting seat 2 in a sliding manner, and the blade fixing block 4 used to prevent the propeller blade 3 from detaching is installed on the fixing block connecting screw 10 in a threaded connection manner, and an anti-detachment pin 8 is installed in the fixing block connecting screw 10 through a rotating shaft, and an anti-detachment groove 7 cooperating with the anti-detachment pin 8 is opened inside the blade fixing block 4. When the propeller rotates, the anti-detachment pin 8 will be thrown out of the anti-detachment pin mounting groove 9 and enter the anti-detachment groove 7 under the action of centrifugal force. Through the restriction of the anti-detachment pin 8, the blade fixing block 4 can be effectively prevented from loosening or even falling off due to the influence of vibration factors. When the propeller blade 3 needs to be disassembled, the anti-detachment pin 8 can be returned to the anti-detachment pin mounting groove 9 by knocking. In summary, the connection strength between the propeller blade 3 and the propeller blade mounting seat 2 of the utility model is higher, and the propeller blade 3 is easy to replace.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A low ship propeller, characterized in that: The invention comprises a propeller shaft (1), a propeller blade mounting seat (2), a propeller blade (3) and a blade fixing block (4), wherein the propeller shaft (1) is fixed to the center position of one end of the propeller blade mounting seat (2), a plurality of blade fixing grooves (5) for fixing the propeller blades (3) are provided at equal intervals on the side surface of the propeller blade mounting seat (2), the propeller blades (3) are installed in the blade fixing grooves (5), and a fixing block connecting screw is fixedly provided at the center position of the other end of the propeller blade mounting seat (2). The fixing block (4) is provided with an anti-dropout pin installation groove (9), an anti-dropout pin (8) is arranged in the anti-dropout pin installation groove (9), an end of the anti-dropout pin (8) away from the propeller blade mounting seat (2) is rotatably connected to the fixing block connecting screw (10) via a rotating shaft, an end of the blade fixing block (4) is provided with a thread groove (14) matching with the fixing block connecting screw (10), and an anti-dropout groove (7) matching with the anti-dropout pin (8) is provided inside the blade fixing block (4).

2. A low ship propeller according to claim 1, characterized in that: A blade baffle (11) is provided on one end of the propeller blade mounting seat (2) close to the propeller shaft (1), and the blade baffle (11) and the propeller blade mounting seat (2) are an integrated structure.

3. A low ship propeller according to claim 1, characterized in that: A connecting block (13) for connecting the propeller blade (3) to the propeller blade mounting seat (2) is fixedly arranged at the bottom of the propeller blade (3).

4. A low ship propeller according to claim 3, characterized in that: A reinforcing member (12) is provided on each side of the connection position between the propeller blade (3) and the connecting block (13); the reinforcing member (12), the connecting block (13) and the propeller blade (3) are an integrated structure; and a reinforcing member slot (6) for matching the reinforcing member (12) is provided at the top of the blade mounting slot (5).

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