Paddle bolt locking device

Abstract

The utility model provides a blade bolt locking device. The blade bolt locking device comprises a flange part, a flange groove, a locking device, a bolt hole and a bolt, the flange groove is formed in the side surface of the bolt hole in the flange part; bolts are screwed into the bolt holes to realize fixation; the locking device is arranged between the flange groove and the bolt, so that the bolt cannot be loosened under the action of external force; and the locking device is not higher than the top of the bolt. And the locking device is ingeniously arranged by utilizing the characteristics of the mounting flange, so that the bolt is locked, and the locking stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of marine technology, specifically to a propeller bolt locking device. Background Technology

[0002] In the marine industry, most propeller locking devices currently employ angled stainless steel bars welded to the top of bolts. These bars secure the bolts in the flange, preventing loosening due to vibration or impact from foreign objects during navigation, thus avoiding potential safety accidents. However, because the stainless steel bars are welded to the bolt tops, they are susceptible to direct impact from foreign objects, potentially leading to their damage. This risk is amplified, especially when the water surface is icy. Therefore, considering the high risk of the locking device detaching due to direct impact from ice, designing a locking device capable of withstanding the impact force of foreign objects and the destructive force of ice is crucial. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a blade bolt locking device, which cleverly utilizes the characteristics of the mounting flange to set up a locking device, thereby achieving bolt locking and improving locking stability.

[0004] A blade bolt locking device according to the present invention includes a flange, a flange groove, a locking device, a bolt hole, and a bolt.

[0005] The flange groove is provided on the side of the bolt hole inside the flange portion;

[0006] The bolt is screwed into the bolt hole to achieve fixation;

[0007] The locking device is located between the flange groove and the bolt, so that the bolt will not loosen under external force;

[0008] The height of the locking device is set no higher than the top of the bolt.

[0009] Furthermore, the locking device is configured as a locking bar;

[0010] After the bolt is screwed into the bolt hole, the two ends of the clip are welded into the flange groove;

[0011] The clip is connected to the bolt.

[0012] Furthermore, the locking device adopts a locking block in the shape of a semi-circular plate;

[0013] After the bolt is screwed into the bolt hole, the retaining block is welded into the flange groove.

[0014] Furthermore, the size of the locking block is similar to the rounded shape within the flange groove; the cross-section of the locking block is connected to the bolt.

[0015] Furthermore, the arc surface of the locking block connects with the flange groove, increasing the contact area between the locking device and the flange.

[0016] Furthermore, the locking device is made of the same metal material as the flange, which improves the reliability of the welding between the locking device and the flange.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Prevent foreign objects from directly impacting the locking device.

[0019] 2. The number of extra parts protruding from the flange surface has been reduced, thus reducing the possibility of blade root cavitation.

[0020] 3. It is better suited to the actual needs of ships operating in ice-covered areas. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the propeller bolt locking device of this utility model;

[0023] Figure 2 This is a schematic diagram of the flange structure of the propeller bolt locking device of this utility model;

[0024] Figure 3 This is a schematic diagram of the locking device structure of the propeller bolt locking device of this utility model;

[0025] The diagram shows: 1-flange part, 2-flange groove, 3-locking device, 4-bolt hole, 5-bolt. Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0027] Example 1: As Figure 1-2As shown, a blade bolt locking device includes a flange 1, a flange groove 2, a locking device 3, a bolt hole 4, and a bolt 5. The flange groove 2 is located on the side of the bolt hole 4 within the flange 1. The bolt 5 is screwed into the bolt hole 4 for fixation. The locking device 3 is located between the flange groove 2 and the bolt 5. This embodiment not only achieves effective locking of the bolt 5 but also prevents the bolt 5 from loosening due to external impact and avoids direct impact from foreign objects on the locking device. In particular, the height of the locking device 3 is set no higher than the top of the bolt 5, which effectively improves the stability of the locking device 3, reduces additional parts protruding from the flange surface, and reduces the possibility of blade root cavitation.

[0028] Example 2: Unlike Example 1, the locking device 3 uses a retaining strip. After the bolt 5 is screwed into the bolt hole 4, both ends of the retaining strip are welded to the flange groove 2, connecting laterally with the bolt 5. This prevents the bolt 5 from rotating under external force due to the retaining strip. Specifically, the retaining strip can be made of different metals such as stainless steel, copper, or iron.

[0029] Example 3: Figure 3 As shown, unlike Embodiment 2, the locking device 3 uses a semi-circular metal block. After the bolt 5 is screwed into the bolt hole 4, the metal block is welded into the flange groove 2. The size of the metal block is similar to the rounded shape of the flange groove 2. The cross-section of the metal block is in contact with the bolt 5, ensuring that the bolt 5 is prevented from loosening under external force. The arc surface of the metal block is in contact with the flange groove 2, increasing the contact area between the locking device 3 and the flange 1, improving the locking effect, and reducing the risk of detachment due to external impact. In particular, the metal block is made of the same metal as the flange 1, improving the reliability of the weld between the locking device and the flange 1.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A paddle bolt locking device, characterized by: The flange part (1), the flange groove (2), the locking device (3), the bolt hole (4), and the bolt (5); The flange groove (2) is arranged on the side of the bolt hole (4) in the flange part (1); The bolt (5) is screwed into the bolt hole (4) to achieve fixation; The locking device (3) is arranged between the flange groove (2) and the bolt (5), so that the bolt (5) will not loosen under external force; The height of the locking device (3) is not higher than the top of the bolt (5).

2. The paddle bolt lock device of claim 1, wherein, The locking device (3) is arranged as a clamping strip; After the bolt (5) is screwed into the bolt hole (4), the two ends of the clamping strip are welded in the flange groove (2); The clamping strip is in contact with the bolt (5).

3. The paddle bolt lock device of claim 1, wherein, The locking device (3) adopts a clamping block in the shape of a semicircle plate; After the bolt (5) is screwed into the bolt hole (4), the clamping block is welded in the flange groove (2).

4. The paddle bolt lock device of claim 3, wherein The size of the clamping block is similar to the rounded shape in the flange groove (2); the cross section of the clamping block is in contact with the bolt (5).

5. The paddle bolt lock device of claim 3, wherein The arc surface of the clamping block is in contact with the flange groove (2), increasing the contact surface between the locking device (3) and the flange part (1).

6. The paddle bolt lock device of claim 1, wherein, The locking device (3) adopts the same metal material as the flange part (1).

Images