Front flow guide protection device of propeller

Abstract

The utility model relates to the technical field of underwater robots, in particular to a front flow guide protection device of a propeller, which comprises a short flow guide blade, a long flow guide blade, a small-diameter annular reinforcing rib, a large-diameter annular reinforcing rib, a T-shaped supporting pipe and a buckling plate, and the small-diameter annular reinforcing rib and the large-diameter annular reinforcing rib are of annular structures with different diameters. The T-shaped supporting pipe is installed on the top of the small-diameter annular reinforcing rib, and a plurality of annularly-distributed flow guide short blades and flow guide long blades are installed on the small-diameter annular reinforcing rib. According to the front flow guide protection device of the thruster, the loss of thrust and efficiency of the thruster can be reduced to a greater extent through the unique design, it is ensured that an underwater robot keeps efficient operation, meanwhile, foreign matter can be effectively prevented from being drawn in, fingers of an operator can be effectively prevented from mistakenly entering a propeller area, and therefore potential safety risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater robots, in particular to a front flow guide protection device for a propeller. Background Art

[0002] In the field of underwater robot technology, the propeller, as a key component, plays a decisive role in the direction and speed of the robot. Especially in the complex and changeable ocean and lake environments, underwater robots are widely used in high-risk operations such as underwater pipeline inspection and construction. In these environments, foreign objects such as fishing nets and cables can be found everywhere, and the high-speed rotation of the propeller often generates strong water flow, which can easily draw in these foreign objects, causing the propeller to get stuck or even damage the propeller, seriously affecting the efficiency and safety of the operation.

[0003] Traditional propeller protection measures, such as front guard nets, can prevent foreign objects from entering the propeller area to a certain extent, but their protective effect is limited, and the installation method is complicated, which often has an adverse effect on the operating efficiency of the propeller. In addition, when the propeller is running at high speed, if the operator accidentally puts his fingers into the propeller area, he will face extremely high safety risks. Utility Model Content

[0004] The purpose of the utility model is to provide a thruster front flow guide protection device to solve the problem proposed in the above background technology that the high-speed rotation of the thruster propeller often generates a strong water flow, which is very easy to draw in these foreign objects, causing the propeller to get stuck or even the thruster to be damaged, seriously affecting the operating efficiency and safety.

[0005] To achieve the above-mentioned purpose, the utility model provides a thruster front guide protection device, including six parts: guide short blades, guide long blades, small diameter annular reinforcement ribs, large diameter annular reinforcement ribs, T-shaped support tubes and snap plates. The small diameter annular reinforcement ribs and the large diameter annular reinforcement ribs are annular structures with different diameters. The T-shaped support tube is installed on the top of the small diameter annular reinforcement ribs, and a number of annularly distributed guide short blades and guide long blades are installed on the small diameter annular reinforcement ribs.

[0006] Preferably, the small-diameter annular reinforcement rib and the large-diameter annular reinforcement rib are concentrically arranged, and the diameter of the large-diameter annular reinforcement rib is larger than the diameter of the small-diameter annular reinforcement rib.

[0007] Preferably, the upper ends of the long guide blades are inclined at an angle along the center line in the range of 10°-45°; the inclination angles of the short guide blades and the long guide blades match the left-hand and right-hand directions of the corresponding propeller propellers, and the inclination angles of the short guide blades and the long guide blades corresponding to the left propeller along the center line are positive, and the inclination angles of the short guide blades and the long guide blades corresponding to the right propeller along the center line are negative.

[0008] Preferably, the T-shaped support tube is connected to the small-diameter annular reinforcement rib and is arranged at an angle. The T-shaped support tube serves as a duct connecting the thruster, the thruster front guide guard plate and the motor.

[0009] Preferably, the T-shaped support tube is provided with a plurality of threaded holes, and matching screws are used to fix the conduit, the thruster front guide guard plate and the motor.

[0010] Preferably, the large-diameter annular reinforcement rib is used to weld and fix the long guide blades and the snap plate.

[0011] Preferably, the short guide blades and the long guide blades are both arranged in a ring shape with equal spacing, and the length of the long guide blades is greater than that of the short guide blades.

[0012] Preferably, the snap plate and the guide short blade are integrally formed, and the snap plate is clamped on the outer wall of the conduit to play a role of limiting and fixing.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The unique design of the thruster front flow protection device can reduce the thrust and efficiency loss of the thruster to a greater extent, ensuring that the underwater robot can maintain efficient operation while effectively preventing foreign objects from being drawn in and the operator's fingers from accidentally entering the propeller area, thereby reducing potential safety risks. Secondly, while reducing thrust and efficiency losses, the present invention also significantly reduces the possibility of foreign objects entering and human hands reaching in, further improving the operational safety and reliability of the underwater robot.

[0015] In addition, the installation structure of the thruster front deflector shield is simple and reliable, which is not only easy to install and maintain, but also does not affect the normal operation of the thruster. Finally, the ingenious design of the small-diameter annular reinforcement ribs and the large-diameter annular reinforcement ribs greatly enhances the structural strength of the invention, improves the service life and stability of the thruster front deflector shield, and provides a strong guarantee for the long-term and efficient operation of the underwater robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the use of the utility model;

[0019] Figure 4It is a thrust comparison diagram of the propeller without the present invention, the propeller with the present invention, and the propeller with the existing guard net under actual test in the present utility model;

[0020] Figure 5 It is a thrust comparison diagram of the utility model under simulation conditions, when the propeller is not equipped with the utility model, when the propeller is equipped with the utility model, and when the propeller is equipped with the existing protective net;

[0021] Figure 6 It is a comparison diagram of the efficiency of the propeller without the present invention, the propeller with the present invention, and the propeller with the existing protective net under the simulation condition;

[0022] The meaning of each number in the figure is:

[0023] 1. Short guide blades; 2. Long guide blades; 3. Small diameter annular reinforcement ribs; 4. Large diameter annular reinforcement ribs; 5. T-shaped support tube; 6. Clip plate; 7. Propeller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the utility model.

[0025] The utility model provides a thruster front flow guide protection device, such as Figure 1-Figure 6As shown, it includes six parts: a guide short blade 1, a guide long blade 2, a small diameter annular reinforcement rib 3, a large diameter annular reinforcement rib 4, a T-shaped support tube 5 and a snap plate 6. The small diameter annular reinforcement rib 3 and the large diameter annular reinforcement rib 4 are annular structures with different diameters. The T-shaped support tube 5 is installed on the top of the small diameter annular reinforcement rib 3. A number of annularly distributed guide short blades 1 and guide long blades 2 are installed on the small diameter annular reinforcement rib 3. By cleverly combining the guide short blade 1, the guide long blade 2, the small diameter annular reinforcement rib 3, the large diameter annular reinforcement rib 4, the T-shaped support tube 5 and the snap plate 6, the front end of the propeller is fully optimized and protected. This structure is not only reasonably designed, but also has significant effects. The small diameter annular reinforcement rib 3 and the large diameter annular reinforcement rib 4 serve as the skeleton of the annular structure, providing solid support for the entire guide guard plate and greatly enhancing its structural strength. The installation position of the T-shaped support tube 5 has been carefully designed and is located at the top of the small-diameter annular reinforcement rib 3, which not only ensures the stability of the support, but also facilitates the connection with other components. A number of annularly distributed short guide blades 1 and long guide blades 2 effectively guide the water flow, reducing the loss of thrust and efficiency of the propeller, while reducing the risk of foreign matter entering and the operator's fingers accidentally entering the propeller area. In summary, the thruster front guide protection device of the utility model has significant technical effects and provides a strong guarantee for the efficient and safe operation of the underwater robot.

[0026] In this embodiment, the small-diameter annular reinforcing rib 3 and the large-diameter annular reinforcing rib 4 are concentrically arranged, and the diameter of the large-diameter annular reinforcing rib 4 is larger than the diameter of the small-diameter annular reinforcing rib 3 .

[0027] Specifically, the upper ends of the long guide blades 2 are inclined along the center line at an angle ranging from 10° to 45°; the inclination angles of the short guide blades 1 and the long guide blades 2 match the left and right directions of the corresponding propellers. The inclination angles of the short guide blades 1 and the long guide blades 2 along the center line of the left propeller are recorded as positive, and the inclination angles of the short guide blades 1 and the long guide blades 2 along the center line of the right propeller are recorded as negative. The concentric arrangement of the small-diameter annular reinforcement ribs 3 and the large-diameter annular reinforcement ribs 4, and the design that the diameter of the large-diameter annular reinforcement ribs 4 is larger than that of the small-diameter annular reinforcement ribs 3, not only enhance the structural strength of the entire front guide shield of the propeller, but also improve its stability and durability. This ingenious annular structure design enables the guide shield to better withstand the various pressures and challenges brought by the complex underwater environment.

[0028] At the same time, the design of the upper end of the long guide blade 2 being tilted at an angle of 10° to 45° along the center line, and the characteristics that the tilt angles of the short guide blade 1 and the long guide blade 2 match the left-hand and right-hand directions of the corresponding propeller, further optimize the water flow guidance effect. This design enables the guide blade to guide the water flow more effectively according to the rotation direction of the propeller, thereby reducing the thrust and efficiency loss of the propeller. At the same time, it can also reduce the risk of foreign matter entering the propeller area and improve the safety and reliability of the underwater robot's operation.

[0029] To sum up, the thruster front guide protection device in this embodiment, through careful design and optimization, has achieved the improvement of structural strength, the improvement of water flow guidance effect and the reduction of the risk of foreign matter entry, providing a strong guarantee for the efficient and safe operation of the underwater robot.

[0030] Furthermore, the T-shaped support tube 5 is connected to the small-diameter annular reinforcement rib 3 and is arranged obliquely. The T-shaped support tube 5 serves as a duct connecting the propeller, the front guide guard plate of the propeller and the motor.

[0031] Furthermore, the T-shaped support tube 5 is provided with a plurality of threaded holes, and matching screws are used to fix the conduit, the thruster front guide shield and the motor.

[0032] Furthermore, the large-diameter annular reinforcement rib 4 is welded and fixed to the long guide blade 2 and the snap plate 6 .

[0033] Furthermore, the short guide blades 1 and the long guide blades 2 are both arranged in a ring shape with equal spacing, and the length of the long guide blades 2 is greater than the length of the short guide blades 1.

[0034] Furthermore, the snap plate 6 and the guide short blade 1 are integrally formed, and the snap plate 6 is clamped on the outer wall of the conduit to play a role of limiting and fixing.

[0035] like Figure 4 , Figure 5 As shown, it is a thrust comparison diagram of the propeller without the present invention, the propeller with the present invention, and the propeller with the existing protective net under actual test and simulation conditions. The figure shows the difference in thrust of the propeller with the present invention and the propeller with the existing protective net. Compared with the existing protective net, the loss of thrust of the propeller reduced by the present invention is much smaller than the loss of thrust after adding the existing protective net, and while ensuring the thrust loss, the possibility of foreign matter entering and human hands reaching in is reduced.

[0036] like Figure 6As shown, it is a comparison diagram of the efficiency of the propeller without the present invention, the propeller with the present invention, and the propeller with the existing protective net under simulation conditions of the present invention; the figure shows the efficiency difference between the propeller installed with the present invention and the propeller installed with the existing protective net. Compared with the existing protective net, the efficiency loss of the propeller installed with the present invention is much smaller than the efficiency loss of the existing protective net, and the possibility of foreign matter entering and human hands reaching in is reduced while ensuring a small loss in propeller efficiency.

[0037] Compared with the front guard net installed on the existing propeller, the present invention has the following beneficial effects: it can reduce the thrust and efficiency loss of the propeller to a greater extent, and while reducing the thrust and efficiency loss, it also reduces the possibility of foreign matter entering and human hands reaching in. The front guide protection device of the propeller is simple and reliable and does not affect the normal operation of the propeller. The small-diameter annular reinforcement ribs and the large-diameter annular reinforcement ribs enhance the structural strength of the present invention and improve the service life and stability of the front guide guard plate of the propeller.

[0038] When the thruster front deflector protection device of the utility model is used, firstly, the whole structure is constructed into a strong and stable annular skeleton through the concentric arrangement of the small diameter annular reinforcement rib 3 and the large diameter annular reinforcement rib 4, and the design that the diameter of the large diameter annular reinforcement rib 4 is larger than the small diameter annular reinforcement rib 3. This skeleton not only enhances the structural strength of the deflector guard plate, but also improves its stability and durability in complex underwater environments.

[0039] Next, the long guide blades 2 and the short guide blades 1 are arranged in an annular manner with equal spacing on the small diameter annular reinforcement ribs 3. The long guide blades 2 are longer than the short guide blades 1, and their inclination angles match the left-hand and right-hand directions of the corresponding propeller. When the propeller is working, these guide blades can effectively guide the water flow, reduce the thrust and efficiency loss of the propeller, and reduce the risk of foreign matter entering the propeller area.

[0040] The T-shaped support tube 5 is a key component connecting the duct of the thruster, the front guide plate of the thruster and the motor, and is obliquely installed on the small-diameter annular reinforcement rib 3. It is connected to the duct, the front guide plate of the thruster and the motor through a number of threaded holes and fixed with matching screws. In this way, the T-shaped support tube 5 not only plays a supporting role, but also ensures the stability and firmness of the entire structure.

[0041] In addition, the large diameter annular reinforcement rib 4 welds and fixes the long guide blade 2 and the snap plate 6, further enhancing the integrity and stability of the structure. The snap plate 6 and the short guide blade 1 are integrally formed, and the snap plate 6 is clamped on the outer wall of the duct to play a role in limiting and fixing. In this way, the entire thruster front guide protection device is firmly installed at the front end of the thruster.

[0042] When the underwater robot starts working, the thruster generates a strong water flow to push the robot forward. At this time, the thruster front guide guard begins to play its important role. The guide blade guides the water flow smoothly through the thruster area, reducing the loss of thrust and efficiency. At the same time, the sturdy structural design also prevents foreign matter from entering the propeller area and protects the thruster from damage. Throughout the process, the thruster front guide guard maintains a stable working state, providing a strong guarantee for the efficient and safe operation of the underwater robot.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A thruster front flow guide protection device, characterized in that: The invention comprises six parts, namely, a guide short blade (1), a guide long blade (2), a small-diameter annular reinforcement rib (3), a large-diameter annular reinforcement rib (4), a T-shaped support tube (5) and a snap plate (6). The small-diameter annular reinforcement rib (3) and the large-diameter annular reinforcement rib (4) are annular structures with different diameters. The T-shaped support tube (5) is installed on the top of the small-diameter annular reinforcement rib (3). A plurality of guide short blades (1) and guide long blades (2) are installed on the small-diameter annular reinforcement rib (3) in an annular distribution.

2. The thruster front flow guide protection device according to claim 1, characterized in that: The small-diameter annular reinforcing rib (3) and the large-diameter annular reinforcing rib (4) are concentrically arranged, and the diameter of the large-diameter annular reinforcing rib (4) is larger than the diameter of the small-diameter annular reinforcing rib (3).

3. The thruster front flow guide protection device according to claim 1, characterized in that: The upper ends of the long guide blades (2) are inclined along the center line at an angle ranging from 10° to 45°; the inclination angles of the short guide blades (1) and the long guide blades (2) match the left-hand or right-hand directions of the corresponding propeller.

4. The thruster front flow guide protection device according to claim 1, characterized in that: The T-shaped support tube (5) is connected to the small-diameter annular reinforcing rib (3) and is arranged in an inclined manner. The T-shaped support tube (5) serves as a component for connecting a duct of the propeller, a front guide shield of the propeller, and a motor.

5. The thruster front flow guide protection device according to claim 1, characterized in that: The T-shaped support tube (5) is provided with a plurality of threaded holes.

6. The thruster front flow guide protection device according to claim 1, characterized in that: The large-diameter annular reinforcing rib (4) is used to weld and fix the long guide blade (2) and the snap plate (6).

7. The thruster front flow guide protection device according to claim 1, characterized in that: The short guide blades (1) and the long guide blades (2) are both arranged in a ring-shaped manner with equal spacing, and the length of the long guide blades (2) is greater than the length of the short guide blades (1).

8. The thruster front flow guide protection device according to claim 1, characterized in that: The snap plate (6) and the guide short blade (1) are arranged as an integrally formed structure, and the snap plate (6) is snapped onto the outer wall of the conduit.

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