Novel ship propeller

Abstract

The utility model discloses a novel ship thruster which comprises a head shell, a propeller and an output shaft, and the propeller is installed on one side of the head shell; the output shaft is arranged in the head shell, penetrates through the propeller and is used for driving the propeller to rotate; wherein the end portion of the output shaft extends to the outer portion of the propeller to form a connecting section, a nut is connected to the connecting section in a screwed mode and used for preventing the propeller from disengaging, the connecting section is further provided with a shaft hole penetrating in the radial direction, and a plug pin is inserted into the shaft hole and used for preventing the nut from retreating.

Description

Technical Field

[0001] The present application relates to the technical field of propellers, and in particular to a new type of marine propeller. Background Art

[0002] With the widespread use of water transportation vehicles, especially ships and underwater mechanical equipment, they often encounter challenges brought by various operating environments. Among them, in the traditional propeller installation method, if the nut becomes loose due to vibration, thermal expansion and contraction and other factors, it may cause the propeller to detach from the shaft system, which will not only cause propulsion failure, but also endanger the stability of the hull and the surrounding navigation safety, posing a serious safety hazard. For example, due to the presence of foreign objects such as aquatic plants and floating garbage (such as discarded sacks or other flexible debris) in the water, these objects are easily entangled in the output shaft of the propulsion system. Especially in the case of turbulent water flow or complex navigation water environment, the entanglement of foreign objects may cause the output shaft to be blocked, which in turn causes the equipment to overload or even completely lock, seriously affecting navigation safety and the normal operation of the equipment.

[0003] Therefore, the purpose of this application is to effectively prevent the output shaft from being entangled by foreign objects, ensure that the propeller mounting nut remains stable during long-term use, and avoid accidental falling off of the propeller due to loosening of the nut, so as to improve the safety and reliability of the operation of water vehicles and underwater equipment.

[0004] The above contents are only used to assist in understanding the technical solution of the present application, and do not constitute an admission that the above contents are the closest prior art to the present application. Summary of the invention

[0005] Based on this, the present application provides a new type of marine propeller to solve one of the above-mentioned technical problems.

[0006] The technical solution adopted by the present application to solve its technical problems is: a head shell, a propeller and an output shaft, wherein the propeller is installed on one side of the head shell; the output shaft is placed in the head shell and passes through the propeller to drive the propeller to rotate; wherein the end of the output shaft extends to the outside of the propeller to form a connecting section, a nut is screwed on the connecting section to prevent the propeller from falling out, and the connecting section is also provided with a radially penetrating axial hole, and a pin is inserted in the axial hole to prevent the nut from retreating.

[0007] In some embodiments, a plurality of radially penetrating limiting grooves are provided on the outer end surface of the nut, and the latch pin passes through one of the limiting grooves.

[0008] In some embodiments, the latch is a b-type spring cotter pin.

[0009] In some embodiments, a receiving cavity is provided at one end of the head shell close to the propeller, the outer end of the propeller cooperates with the nut, and at least a portion of the inner end of the propeller extends into the receiving cavity.

[0010] In some embodiments, an annular protrusion is provided at the inner end of the propeller, and the annular protrusion is located in the accommodating cavity and maintains a distance from the inner wall of the accommodating cavity.

[0011] In some embodiments, a sealing plate is provided at the end of the accommodating cavity, and the inner diameter of the sealing plate is smaller than the outer diameter of the annular protrusion.

[0012] In some embodiments, the sealing plate includes two semi-circular ring plates spliced ​​in half.

[0013] In some embodiments, the semicircular ring plate and the end of the accommodating cavity are connected by one or more of the following methods: snap connection, threaded connection, and bonding.

[0014] In some embodiments, the semicircular ring plate is threadedly connected to the end of the accommodating cavity, and a plurality of screws are passed through the semicircular ring plate to fix it to the end of the accommodating cavity.

[0015] The beneficial effects of the present application are as follows: by arranging a pin on the head of the propeller shaft, the potential safety hazard caused by the nut loosening is prevented, and a baffle is arranged on the head shell to form a deflection structure with the rear protrusion of the propeller shell, which can effectively prevent the safety hazard caused by entanglement of foreign objects during navigation. These structures greatly improve the safety during navigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the elevation structure of this application.

[0018] Figure 2 This is the main view of this application.

[0019] Figure 3 It is the right view of this application.

[0020] Figure 4 It is a cross-sectional schematic diagram of the present application.

[0021] Explanation of the accompanying drawings: 1. head shell; 11. accommodating chamber; 12. sealing plate; 2. propeller; 21. annular convex portion; 3. output shaft; 31. connecting section; 32. nut; 33. shaft hole; 34. latch. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection of this application.

[0023] In the embodiments of this application, please refer to Figure 1-4 As shown, the present application provides a new type of marine propulsion device, which mainly includes: a head shell 1, a propeller 2 and an output shaft 3, wherein the propeller 2 is installed on one side of the head shell 1; the output shaft 3 is placed in the head shell 1 and passes through the propeller 2, so as to drive the propeller 2 to rotate; wherein, the end of the output shaft 3 extends to the outside of the propeller 2 to form a connecting section 31, and a nut 32 is screwed on the connecting section 31 to prevent the propeller 2 from falling out, and the connecting section 31 is also provided with a radially penetrating shaft hole 33, and a latch 34 is inserted in the shaft hole 33 to prevent the nut 32 from retreating.

[0024] Specifically, when the latch 34 is inserted into the shaft hole 33 , the movement distance of the nut 32 will be limited by the latch 34 , which greatly avoids the risk of the propeller 2 flying out due to vibration or thermal expansion and contraction of the nut 32 .

[0025] Some preferred / improved embodiments based on the above embodiments will be described below. Any one of the following embodiments may be selected, or multiple embodiments may be selected and combined.

[0026] Reference Figure 2 As shown, the outer end surface of the nut 32 is provided with a plurality of radially penetrating limiting grooves, and the latch 34 passes through one of the limiting grooves. This arrangement makes the latch 34 and the nut 32 more compact and stable, thereby more effectively preventing the nut 32 from loosening.

[0027] Preferably, the latch 34 is a B-type spring cotter pin, which can be clamped and fixed, which not only increases the number of fixing points, but also helps to distribute stress, improve the fixing effect, and prevent the latch 34 from falling out.

[0028] Reference Figure 4 As shown, the head shell 1 is provided with a receiving cavity 11 at one end close to the propeller 2, the outer end of the propeller 2 cooperates with the nut 32, and at least a part of the inner end of the propeller 2 extends into the receiving cavity 11. This arrangement can prevent the propeller 2 from moving in the axial direction, especially when the ship encounters waves and bumps during navigation, it can effectively prevent the propeller 2 from leaving its normal working position.

[0029] Furthermore, an annular protrusion 21 is provided at the inner end of the propeller 2, and the annular protrusion 21 is located in the accommodating cavity 11 and maintains a distance from the inner wall of the accommodating cavity 11. This arrangement shortens the distance between the inner end of the propeller 2 and the inner wall of the accommodating cavity 11, thereby reducing the possibility of foreign matter entering the head shell 1.

[0030] Specifically, a sealing plate 12 is provided at the end of the accommodating cavity 11, and the inner diameter of the sealing plate 12 is smaller than the outer diameter of the annular protrusion 21. The annular protrusion 21 can form a deflection structure with the sealing plate 12, thereby further avoiding the possibility of foreign matter entering the head shell 1.

[0031] More specifically, the sealing plate 12 includes two semicircular ring plates joined in half, which can make installation more convenient and quick.

[0032] Preferably, the semicircular ring plate and the end of the accommodating cavity 11 are connected by one or more of the following methods: snap connection, threaded connection, and bonding.

[0033] Preferably, the semicircular ring plate is threadedly connected to the end of the accommodating cavity 11, and multiple screws are passed through the semicircular ring plate to fix it to the end of the accommodating cavity 11. The threaded connection can provide stable axial and radial load-bearing capacity, ensuring the stability of the connection between the sealing plate 12 and the accommodating cavity 11.

[0034] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of marine propeller, characterized in that: It includes a head shell, a propeller and an output shaft, wherein the propeller is installed on one side of the head shell; the output shaft is placed in the head shell and passes through the propeller, and is used to drive the propeller to rotate; The end of the output shaft extends to the outside of the propeller to form a connecting section, a nut is screwed on the connecting section to prevent the propeller from falling out, and the connecting section is also provided with a radially penetrating shaft hole, a pin is inserted in the shaft hole to prevent the nut from retreating.

2. A novel marine propeller according to claim 1, characterized in that: The outer end surface of the nut is provided with a plurality of radially penetrating limiting grooves, and the latch pin passes through one of the limiting grooves.

3. A novel marine propeller according to claim 1, characterized in that: The latch is a B-type spring cotter pin.

4. A novel marine propeller according to claim 1, characterized in that: An accommodating cavity is provided at one end of the head shell close to the propeller, the outer end of the propeller cooperates with the nut, and at least a part of the inner end of the propeller extends into the accommodating cavity.

5. A novel marine propeller according to claim 4, characterized in that: An annular convex portion is disposed at the inner end of the propeller, and the annular convex portion is located in the accommodating cavity and keeps a distance from the inner wall of the accommodating cavity.

6. A novel marine propeller according to claim 5, characterized in that: A sealing plate is provided at the end of the accommodating cavity, and the inner diameter of the sealing plate is smaller than the outer diameter of the annular protrusion.

7. A novel marine propeller according to claim 6, characterized in that: The sealing plate comprises two semicircular ring plates which are spliced ​​in half.

8. A novel marine propeller according to claim 7, characterized in that: The semicircular ring plate and the end of the accommodating cavity are connected by one or more combinations of the following methods: clamping, threaded connection, and bonding.

9. A novel marine propeller according to claim 8, characterized in that: The semicircular ring plate is connected to the end of the accommodating cavity by threading, and a plurality of screws are passed through the semicircular ring plate to fix it to the end of the accommodating cavity.

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