Underwater propeller and unmanned ship

Abstract

The underwater propeller comprises a supporting part, a turnover part and a propeller body, the supporting part comprises a supporting frame and a plurality of limiting blocks, and the limiting blocks are arranged on the two sides of the bottom of the supporting frame; an indexing pin is arranged on the limiting block in a penetrating manner; the folding part comprises a plurality of folding legs, one ends of the folding legs are hinged to the limiting blocks, and limiting holes are formed in the ends, close to the limiting blocks, of the folding legs; the folding leg rotates to drive the indexing pin to be matched with the limiting hole; the propeller body is hinged to the end, away from the limiting block, of the folding leg. According to the propeller structure, the foldable function of the propeller is achieved, the propeller can be folded when not used, and the storage space is reduced; when the propeller is used in water, the propeller sinks to the water bottom due to the weight of the propeller body, the folding legs are locked through the indexing pins during propelling, the underwater depth of the propeller is guaranteed, and speed reduction of the propeller caused by insufficient water depth is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater propellers, in particular to an underwater propeller and an unmanned boat. Background Art

[0002] Unmanned boats, as an emerging type of surface robot, have demonstrated their unique advantages and application value in various fields in recent years. Their power source is the underwater thrusters installed at the bottom of the hull, which drive the entire hull forward.

[0003] In the existing technology, the underwater thruster frame is an unadjustable fixed plate that comes with the thruster. When in use, the thruster needs to have a certain depth of water to maintain stability when working in the water. Therefore, in order to meet the depth of the thruster in the water, it is necessary to load heavy objects to keep the thruster in a certain water depth, or to increase the installation height of the thruster to maintain the depth of the thruster in the water. Installing this type of thruster on an unmanned boat will increase the weight of the unmanned boat or increase the packaging space of the unmanned boat, and the unmanned boat used for rapid rescue will no longer be light and fast when in use. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art in which the underwater propulsion device is used on an unmanned vessel, that is, the hull becomes heavier or the storage space becomes larger due to the draft depth.

[0005] In order to solve the above technical problems, the present invention provides an underwater propeller, comprising:

[0006] The support part includes a support frame and a plurality of limit blocks, wherein the limit blocks are arranged on both sides of the bottom of the support frame; the limit blocks are provided with indexing pins;

[0007] The folding portion includes a plurality of folding legs, one end of each folding leg is hinged to the limit block, and a limit hole is provided on one end of each folding leg close to the limit block; the rotation of the folding leg drives the indexing pin to engage with the limit hole;

[0008] The propeller body is hinged to one end of the folding leg away from the limiting block.

[0009] In one embodiment of the present utility model, the limit block is U-shaped, and a first pin hole and a mounting hole are provided on the surface of the limit block. The indexing pin is installed in the mounting hole, and a first connecting hole that cooperates with the first pin hole is provided on the folding leg. A first connecting bolt is passed between the first pin hole and the first connecting hole.

[0010] In one embodiment of the present invention, a guiding slope is provided on one side of the limiting hole, and the guiding slope is communicated with the limiting hole.

[0011] In one embodiment of the present invention, the indexing pin includes a kingpin shaft, an outer sleeve and a tightening nut, the outer sleeve is sleeved on the outside of the kingpin shaft, a compression spring is sleeved between the kingpin shaft and the outer sleeve, the tightening nut is screwed on the outside of the outer sleeve, and the outer sleeve is inserted into the mounting hole.

[0012] In one embodiment of the present invention, the indexing pin further includes a pull ring, which is arranged at the end of the indexing pin.

[0013] In one embodiment of the present invention, the surface of the outer sleeve is provided with an external thread that matches the mounting hole.

[0014] In one embodiment of the present invention, a connecting block is provided between the folding leg and the propeller body, the connecting block is hinged to the folding leg, and the connecting block and the propeller body are pluggable and detachable.

[0015] In one embodiment of the present invention, a second pin hole is provided on the connecting block, a second connecting hole matching with the second pin hole is provided on the folding leg, and a second connecting bolt is passed between the second pin hole and the second connecting hole.

[0016] In one embodiment of the present invention, a third connecting hole is formed on the end surface of the bottom of the connecting block, and a third connecting bolt is provided between the third connecting hole and the propeller body.

[0017] An unmanned boat comprises the underwater propeller.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The utility model discloses an underwater propeller and an unmanned boat. The propeller structure in the utility model realizes the foldable function of the propeller. The propeller can be folded when not in use, reducing the storage space. Secondly, when used in water, it will sink to the bottom of the water due to the weight of the body. During propulsion, the folding legs are locked by the indexing pin to ensure the depth of the propeller underwater and avoid the speed reduction of the propeller due to insufficient water depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0021] Figure 1 This is a front view of the overall structure of the utility model in underwater state;

[0022] Figure 2This is a front view of the overall structure of the utility model in a folded state;

[0023] Figure 3 This is a side view of the overall structure of the utility model in an underwater state;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure of the middle support frame;

[0025] Figure 5 for Figure 3 Schematic diagram of the structure of the middle folding leg;

[0026] Figure 6 for Figure 5 A cross-sectional view of the middle limit hole;

[0027] Figure 7 for Figure 3 Schematic diagram of the structure of the connection block;

[0028] Figure 8 for Figure 3 Schematic diagram of the structure of the middle indexing pin;

[0029] Explanation of the reference numerals in the specification: 1. Support part; 2. Folding part; 3. Propeller body; 11. Support frame; 12. Limit block; 13. Indexing pin; 21. Folding leg; 22. Connecting block; 23. First connecting bolt; 24. Second connecting bolt; 25. Third connecting bolt; 121. Mounting hole; 122. First pin hole; 131. Main pin shaft; 132. Outer sleeve; 133. Tightening nut; 134. Disc spring; 135. Pull ring; 211. Limit hole; 212. First connecting hole; 213. Second connecting hole; 214. Guide ramp; 221. Second pin hole; 222. Third connecting hole. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0031] Example 1

[0032] Reference Figures 1-8 As shown, the utility model discloses an underwater propeller, comprising:

[0033] The support part 1 includes a support frame 11 and a plurality of limit blocks 12, wherein the limit blocks 12 are arranged on both sides of the bottom of the support frame 11; an indexing pin 13 is passed through the limit blocks 12;

[0034] The folding portion 2 includes a plurality of folding legs 21, one end of each folding leg 21 being hinged to the limit block 12, and a limit hole 211 being provided at one end of each folding leg 21 close to the limit block 12; the rotation of the folding leg 21 drives the indexing pin 13 to engage with the limit hole 211;

[0035] The propeller body 3 is hinged to one end of the folding leg 21 away from the limit block 12 .

[0036] It can be seen that one end of the propeller support frame 11 in the present invention is connected to the bottom of the hull, and the other end is connected to the propeller body 3, so as to realize the folding of the propeller body 3. Specifically, the two ends of the folding leg 21 are respectively connected to the support frame 11 and the propeller body 3, wherein the folding leg 21 is hinged to the limit block 12 at the bottom of the support frame 11, and the folding leg 21 can rotate around the limit block 12. The other end of the support leg is also hinged to the propeller body 3. When the entire unmanned boat is packed, the folding leg 21 can be folded and rotated to reduce the storage space of the entire package. When it is necessary to launch the boat, the propeller body 3 is subjected to its own gravity, and the weight of the propeller body 3 drives the folding leg 21 to extend. When the propeller body 3 is in operation, it applies a thrust to the folding leg 21. A limit hole 211 is provided at the end of the folding leg 21 connected to the limit block 12. The thrust of the propeller body 3 drives the folding leg 21 to rotate, causing the indexing pin 13 to pass through the limit hole 211, securing the folding leg 21. This ensures that the propeller body 3 has sufficient draft during travel and avoids speed reduction due to insufficient water depth. When the propeller body 3 is retracted after travel, the indexing pin 13 can be directly disengaged from the limit hole 211, and the propeller body 3 can be folded.

[0037] The propeller structure in the present invention realizes the foldable function of the propeller. The propeller can be folded when not in use, reducing the storage space. Secondly, when used in water, it will sink to the bottom of the water due to the weight of the body. During propulsion, the folding legs 21 are locked by the indexing pin 13 to ensure the depth of the propeller under water, avoiding the speed reduction of the propeller due to insufficient water depth.

[0038] Furthermore, the limit block 12 is U-shaped, and a first pin hole 122 and a mounting hole 121 are provided on the surface of the limit block 12. The indexing pin 13 is installed in the mounting hole 121, and a first connecting hole 212 is provided on the folding leg 21 to cooperate with the first pin hole 122. A first connecting bolt 23 is passed between the first pin hole 122 and the first connecting hole 212.

[0039] Specifically, the folding leg 21 is clamped in the U-shaped groove of the limit block 12, and the folding leg 21 rotates in the U-shaped groove through the first connecting bolt 23. The mounting hole 121 is set at the top of the first connecting hole 212. During the rotation process, the limiting hole 211 on the folding leg 21 cooperates with the indexing pin 13 in the mounting hole 121, and the indexing pin 13 is inserted into the limiting hole 211 to limit the rotation of the folding leg 21 and ensure that the propeller body 3 at the bottom is at a stable draft depth.

[0040] Furthermore, a guiding inclined surface 214 is provided on one side of the limiting hole 211 , and the guiding inclined surface 214 is communicated with the limiting hole 211 .

[0041] Specifically, the guide slope 214 guides the end of the indexing pin 13 to facilitate the indexing pin 13 to enter the limiting hole 211 , while buffering the automatic extension of the indexing pin 13 .

[0042] Furthermore, the indexing pin 13 includes a main pin shaft 131, a sleeve 132 and a tightening nut 133. The sleeve 132 is sleeved on the outside of the main pin shaft 131. A compression spring 134 is sleeved between the main pin shaft 131 and the sleeve 132. The tightening nut 133 is screwed on the outside of the sleeve 132. The sleeve 132 is inserted into the mounting hole 121.

[0043] Specifically, the structure of indexing pin 13 is primarily realized by a compression spring 134 disposed between kingpin shaft 131 and outer sleeve 132. The tension of compression spring 134 allows kingpin shaft 131, which is located in the center, to expand and contract within outer sleeve 132. Outer sleeve 132 is threadedly connected to mounting hole 121 and is finally locked by tightening nut 133.

[0044] Furthermore, the indexing pin 13 further includes a pull ring 135 , and the pull ring 135 is provided at the end of the indexing pin 13 .

[0045] Specifically, one end of the indexing pin 13 cooperates with the limiting hole 211 , and the other end of the indexing pin 13 is provided with a pull ring 135 . When the propeller body 3 needs to be folded, the pull ring 135 is pulled, and the compression spring 134 is compressed, so that the indexing pin 13 leaves the limiting hole 211 .

[0046] Furthermore, the surface of the outer sleeve 132 is provided with an external thread that matches the mounting hole 121. Specifically, the entire indexing pin 13 is fixed to the mounting hole 121 through a threaded connection.

[0047] Furthermore, a connecting block 22 is provided between the folding leg 21 and the propeller body 3 . The connecting block 22 is hinged to the folding leg 21 , and the connecting block 22 and the propeller body 3 are pluggable and detachable.

[0048] Furthermore, a second pin hole 221 is provided on the connecting block 22 , a second connecting hole 213 matching with the second pin hole 221 is provided on the folding leg, and a second connecting bolt 24 is passed between the second pin hole 221 and the second connecting hole 213 .

[0049] Specifically, the connection block 22 provided between the propeller body 3 and the folding leg 21 increases the degree of freedom of the entire structure and improves the flexibility of the extension movement of the propeller body 3. Similarly, the side where the connection block 22 is hinged to the folding leg 21 is a U-shaped groove. The folding leg 21 is clamped in the U-shaped groove and hinged via a second connecting bolt 24. This ensures that the propeller body 3 is in a single direction when expanding and contracting, while also ensuring the stability of the propeller body 3 underwater.

[0050] Furthermore, a third connecting hole 222 is formed on the end surface of the bottom of the connecting block 22, and a third connecting bolt 25 is provided between the third connecting hole 222 and the propeller body 3 to ensure the stability of the propeller body 3 during folding and underwater operation.

[0051] Example 2

[0052] An unmanned boat includes the underwater propeller described in Example 1. During installation, the support frame 11 is connected to the bottom of the unmanned boat, and the connection method can be gluing or bolting.

[0053] In summary, the present invention introduces an underwater propeller and an unmanned boat. The propeller structure in the present invention realizes the foldable function of the propeller. The propeller can be folded when not in use, reducing the storage space; secondly, when used in water, it will sink to the bottom of the water due to the weight of the body. During propulsion, the folding legs 21 are locked by the indexing pin 13 to ensure the depth of the propeller underwater and avoid the propeller from slowing down due to insufficient water depth.

[0054] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An underwater propeller, characterized in that: include: The support part includes a support frame and a plurality of limit blocks, wherein the limit blocks are arranged on both sides of the bottom of the support frame; the limit blocks are provided with indexing pins; The folding portion includes a plurality of folding legs, one end of each folding leg is hinged to the limit block, and a limit hole is provided on one end of each folding leg close to the limit block; the rotation of the folding leg drives the indexing pin to engage with the limit hole; The propeller body is hinged to one end of the folding leg away from the limiting block.

2. The underwater propeller according to claim 1, characterized in that: The limit block is U-shaped, and a first pin hole and a mounting hole are provided on the surface of the limit block. The indexing pin is installed in the mounting hole. A first connecting hole that cooperates with the first pin hole is provided on the folding leg, and a first connecting bolt is passed between the first pin hole and the first connecting hole.

3. The underwater propeller according to claim 1, characterized in that: A guiding slope is provided on one side of the limiting hole, and the guiding slope is communicated with the limiting hole.

4. The underwater propeller according to claim 2, characterized in that: The indexing pin includes a kingpin shaft, an outer sleeve and a tightening nut. The outer sleeve is sleeved on the outside of the kingpin shaft. A compression spring is sleeved between the kingpin shaft and the outer sleeve. The tightening nut is screwed on the outside of the outer sleeve, and the outer sleeve is inserted into the mounting hole.

5. The underwater propeller according to claim 4, characterized in that: The indexing pin further includes a pull ring disposed on an end portion of the indexing pin.

6. The underwater propeller according to claim 4, characterized in that: The surface of the outer sleeve is provided with external threads that match the mounting hole.

7. The underwater propeller according to claim 1, characterized in that: A connecting block is provided between the folding leg and the propeller body. The connecting block is hinged to the folding leg and is connected to the propeller body in a pluggable and detachable manner.

8. The underwater propeller according to claim 7, characterized in that: The connecting block is provided with a second pin hole, the folding leg is provided with a second connecting hole matched with the second pin hole, and a second connecting bolt is passed through the second pin hole and the second connecting hole.

9. The underwater propeller according to claim 7, characterized in that: A third connecting hole is formed on the end surface of the bottom of the connecting block, and a third connecting bolt is provided between the third connecting hole and the propeller body.

10. An unmanned ship, characterized in that: Comprising the underwater propeller according to any one of claims 1 to 9.

Images