An anti-entanglement device for propellers of underwater robots

Abstract

This utility model relates to the field of propeller protection technology, specifically a propeller anti-entanglement device for underwater robots. It includes a robot body with guide cavities on both sides of the tail end. A propeller is housed within each guide cavity. A guide slope is formed on the side of the guide cavity closest to the robot body's direction of travel. A filter screen is installed on the guide slope, which is connected to the end of the guide cavity. This utility model effectively prevents the propeller from becoming entangled with debris, improves the operational stability of the underwater robot's propulsion system, and reduces the risk of motor overload damage caused by propeller entanglement.

Description

Technical Field

[0001] This utility model relates to the field of propeller protection technology, specifically a propeller anti-entanglement device for underwater robots. Background Technology

[0002] Underwater robots are widely used in freshwater ecological exploration, marine resource exploration, and underwater operations. The stable operation of their propulsion system directly determines operational efficiency and safety. These robots typically have flow-guiding cavities on both sides of the tail end of the robot body, with propellers installed inside to provide power. However, in the operating environment, debris such as aquatic plants, fishing net fragments, and ropes carried by the water flow can easily enter the flow-guiding cavities and become entangled with the high-speed rotating propellers. This can lead to a sharp drop in propulsion efficiency, motor overload damage, and in severe cases, robot instability and loss of control, increasing equipment maintenance costs and operational risks. Utility Model Content

[0003] The purpose of this invention is to provide an anti-entanglement device for propellers of underwater robots to solve the problems mentioned in the background art.

[0004] The technical solution of this utility model is: a propeller anti-entanglement device for an underwater robot, comprising a robot body, with guide cavities provided on both sides of the tail end of the robot body, a propeller disposed in the guide cavity, and a guide slope opened on the side of the guide cavity near the direction of travel of the robot body, and a filter screen installed on the guide slope and connected to the end side of the guide cavity.

[0005] The effects achieved by the above components are as follows: the guide cavities on both sides of the tail end of the robot body provide installation space for the propeller. When the underwater robot moves, the water flows into the guide cavity along the direction of the robot body's movement. The guide slope on the side of the guide cavity closest to the direction of movement can guide the water flow, making the water flow enter the guide cavity more smoothly. At the same time, the filter screen installed on the guide slope can directly block the water weeds, fishing net fragments and other debris carried in the water flow, preventing the debris from entering the guide cavity and contacting the propeller. This achieves the purpose of preventing the propeller from being entangled by debris, improving the operational stability of the underwater robot's propulsion system, and reducing the risk of motor overload damage caused by propeller entanglement.

[0006] Preferably, the inner side of the top of the filter screen is provided with a protruding tongue extending into the flow guide cavity, and the inner wall of the top of the flow guide cavity is provided with a groove that engages with the protruding tongue.

[0007] The effect achieved by the above-mentioned components is as follows: When installing the filter screen, the protrusion on the filter screen is aligned with the groove on the inner wall of the guide cavity and inserted. The protrusion and the groove form an interlocking structure, which can accurately position the filter screen during installation, avoiding left-right or up-down misalignment. This ensures that the filter screen can completely cover the opening of the guide cavity near the direction of travel, thereby improving the installation and positioning accuracy of the filter screen. It also increases the shielding and sealing performance of the filter screen at the entrance of the guide cavity, further reducing the probability of small debris entering through the gap between the filter screen and the guide cavity.

[0008] Preferably, the bottom end of the filter screen is provided with an extension strip extending into the flow guide cavity, the extension strip is provided with a plurality of positioning holes, and a liftable locking member is installed on the inner side of the bottom end of the flow guide cavity, one end of the locking member being slidably inserted into the positioning hole.

[0009] The aforementioned components achieve the following effects: During filter installation, the extension strip extends into the flow guide cavity along with the filter. By adjusting the locking device at the bottom of the flow guide cavity, one end of the locking device slides into the corresponding positioning hole on the extension strip. The locking device limits and fixes the extension strip through the positioning hole, thereby firmly fixing the filter onto the flow guide slope of the flow guide cavity. This prevents the filter from loosening or shifting due to water flow impact when the underwater robot is operating in a complex water flow environment. It achieves the purpose of enhancing the filter's installation firmness, improving the filter's impact resistance under underwater conditions, and reducing the propeller entanglement problem caused by filter loosening and failure.

[0010] Preferably, the locking member includes a push rod formed on the inner side of the bottom end of the flow guide cavity, the bottom end of the push rod extending to the outer side of the bottom end of the robot body, and a limiting post extending into the positioning hole fixed at the top end of the push rod.

[0011] The aforementioned components achieve the following effects: When the filter needs to be disassembled for cleaning or replacement, the push rod is manually pushed from the outside of the bottom of the robot body. The push rod drives the top limiting post to rise and fall synchronously, causing the limiting post to disengage from the positioning hole on the extension strip and release the lock on the filter. During installation, the push rod is pushed in the opposite direction, allowing the limiting post to re-insert into the positioning hole to complete the locking. There is no need to disassemble the underwater robot body or other structures of the flow guide cavity, achieving the purpose of convenient filter disassembly and assembly, improving the efficiency of filter cleaning and maintenance, and shortening the downtime of the underwater robot caused by the maintenance of the anti-entanglement device.

[0012] Preferably, a magnetic block is embedded on the inner side of the bottom end of the flow guiding cavity, which magnetically engages with the bottom end of the limiting post.

[0013] The effect achieved by the above components is as follows: when the limiting post is inserted into the positioning hole of the extension strip to lock, the magnetic block in the flow guide cavity forms a magnetic attraction with the bottom end of the limiting post. The limiting post is attracted by magnetic force, preventing the underwater robot from accidentally dislodging from the positioning hole due to vibration, water flow impact or accidental contact with the push rod during operation. This ensures that the locking component always maintains an effective locking state on the filter screen, thereby improving the locking reliability of the locking component, increasing the safety of the anti-entanglement device in complex underwater environments, and avoiding propeller entanglement failure caused by accidental filter screen detachment.

[0014] This utility model provides an improved anti-entanglement device for underwater robots' propellers, which has the following improvements and advantages compared with the prior art: When the underwater robot moves, the water flows into the guide cavity along the direction of the robot's movement. The guide slope on the side of the guide cavity closest to the direction of movement guides the water flow, allowing it to enter the guide cavity more smoothly. At the same time, the filter screen installed on the guide slope can directly block aquatic plants, fishing net fragments and other debris carried in the water flow, preventing debris from entering the guide cavity and contacting the propeller. This achieves the purpose of preventing the propeller from being entangled by debris, improving the operational stability of the underwater robot's propulsion system and reducing the risk of motor overload damage caused by propeller entanglement. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a first-view three-dimensional structural diagram of the present invention. Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective; Figure 3 This is a three-dimensional structural diagram of the filter assembly in this utility model; Figure 4 This is a schematic diagram of the main structure of the filter assembly in this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Robot body; 2. Flow guide cavity; 3. Propeller; 4. Flow guide slope; 5. Filter screen; 6. Locking component; 61. Limiting post; 62. Push rod; 7. Protruding tongue; 8. Groove bar; 9. Extension bar; 10. Positioning hole; 11. Magnetic block. Detailed Implementation

[0017] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0018] This utility model provides an improved anti-entanglement device for propellers of underwater robots. The technical solution of this utility model is as follows: In embodiments of this utility model, such as Figures 1-4 As shown, an anti-entanglement device for a propeller of an underwater robot includes a robot body 1. Both sides of the tail end of the robot body 1 are provided with flow guide cavities 2, and a propeller 3 is installed inside each flow guide cavity 2. A flow guide slope 4 is provided on the side of the flow guide cavity 2 closest to the direction of travel of the robot body 1. A filter screen 5 is installed on the flow guide slope 4, which is adjacent to the end side of the flow guide cavity 2. The flow guide cavities 2 on both sides of the tail end of the robot body 1 provide installation space for the propeller 3. When the underwater robot moves, the water flows along the direction of travel of the robot body 1 into the flow guide cavity 2. The flow guide slope 4 on the side of the flow guide cavity 2 closest to the direction of travel guides the water flow, allowing it to enter the flow guide cavity 2 more smoothly. At the same time, the filter screen 5 installed on the flow guide slope 4 can directly block debris such as aquatic plants and fishing net fragments carried in the water flow, preventing debris from entering the flow guide cavity 2 and contacting the propeller 3, thus achieving the purpose of preventing the propeller 3 from being entangled by debris.

[0019] In an embodiment of this utility model, a protruding tongue 7 extending into the flow guide cavity 2 is provided on the inner side of the top of the filter screen 5. A groove 8 that engages with the protruding tongue 7 is provided on the inner wall of the top of the flow guide cavity 2. When installing the filter screen 5, the protruding tongue 7 on the filter screen 5 is aligned with the groove 8 on the inner wall of the flow guide cavity 2 and inserted. The protruding tongue 7 and the groove 8 form an engagement structure, which can accurately position the filter screen 5. An extension strip 9 extending into the flow guide cavity 2 is provided at the bottom of the filter screen 5. Multiple positioning holes 10 are provided on the 9. A lifting locking member 6 is installed on the inner side of the bottom end of the flow guide cavity 2. One end of the locking member 6 is slidably inserted into the positioning hole 10. The extension strip 9 extends into the flow guide cavity 2 along with the filter screen 5. Adjust the locking member 6 at the bottom end of the flow guide cavity 2 so that one end of it is slidably inserted into the corresponding positioning hole 10 on the extension strip 9. The locking member 6 limits and fixes the extension strip 9 through the positioning hole 10, thereby firmly fixing the filter screen 5 on the flow guide slope 4 of the flow guide cavity 2. Locking component 6 includes a push rod 62 located on the inner side of the bottom end of the flow guide cavity 2. The bottom end of the push rod 62 extends to the outer side of the bottom end of the robot body 1. A limiting post 61 extending into the positioning hole 10 is fixed at the top end of the push rod 62. When the filter screen 5 needs to be removed for cleaning or replacement, the push rod 62 is manually pushed from the outer side of the bottom end of the robot body 1. The push rod 62 drives the limiting post 61 at the top end to rise and fall synchronously, causing the limiting post 61 to disengage from the positioning hole 10 on the extension strip 9, thus releasing the lock on the filter screen 5. 2. A magnetic block 11 is embedded on the inner side of the bottom end, which magnetically engages with the bottom end of the limiting post 61. When the limiting post 61 is inserted into the positioning hole 10 of the extension strip 9 to lock, the magnetic block 11 in the flow guide cavity 2 forms a magnetic engagement with the bottom end of the limiting post 61. The limiting post 61 is magnetically attracted to the magnetic force to prevent the underwater robot from accidentally dislodging from the positioning hole 10 due to vibration, water flow impact or accidental contact with the push rod 62 during operation, thus ensuring that the locking part 6 always maintains an effective locking state on the filter screen 5.

[0020] The working principle of the anti-entanglement device for propellers of underwater robots provided by this utility model is as follows: During the device installation phase: First, the flow guide cavities 2 on both sides of the tail end of the robot body 1 are used as the installation base for the propeller 3. After the propeller 3 is assembled, the filter screen 5 is installed. The protruding tongue 7 on the inner side of the top of the filter screen 5 is aligned with the groove 8 on the inner wall of the top of the flow guide cavity 2 and inserted. The filter screen 5 is initially positioned by the insertion and cooperation of the protruding tongue 7 and the groove 8. At the same time, the extension strip 9 at the bottom of the filter screen 5 extends into the flow guide cavity 2 along with the filter screen 5. The push rod 62 of the locking part 6 at the bottom of the flow guide cavity 2 (the bottom end of the push rod 62 extends to the outer side of the bottom of the robot body 1) is adjusted. The push rod 62 is pushed to drive the top limiting post 61 to rise, so that the limiting post 61 slides into the corresponding positioning hole 10 on the extension strip 9. At this time, the magnetic block 11 on the inner side of the bottom of the flow guide cavity 2 forms a magnetic attraction with the bottom end of the limiting post 61, further fixing the limiting post 61. Finally, the filter screen 5 is firmly installed on the flow guide slope 4 of the flow guide cavity 2. During device operation: When the underwater robot is working, the robot body 1 drives the propeller 3 in the guide cavity 2 to rotate and propel it; the water flows along the direction of travel of the robot body 1 into the guide cavity 2, and the guide slope 4 guides the water flow, so that the water flows smoothly into the guide cavity 2; at the same time, the filter screen 5 installed on the guide slope 4 directly blocks the water weeds, fishing net fragments and other debris carried in the water flow, preventing the debris from entering the guide cavity 2 and contacting the propeller 3, and preventing the propeller 3 from being entangled; During device maintenance: When the filter screen 5 is attached to debris and needs to be cleaned, pull the push rod 62 down from the outside of the bottom of the robot body 1 to drive the limit post 61 down and disengage it from the positioning hole 10, release the magnetic attraction of the magnetic block 11 to the limit post 61, and then pull the protruding tongue 7 of the filter screen 5 out of the groove 8 to remove the filter screen 5 for cleaning; after cleaning, reassemble the filter screen 5 according to the installation steps to restore the device's anti-tangling function.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A propeller anti-entanglement device for an underwater robot comprising a robot body (1), characterized in that: The robot body (1) has flow guide cavities (2) on both sides of the tail end. A propeller (3) is installed in the flow guide cavity (2). A flow guide slope (4) is opened on the side of the flow guide cavity (2) near the direction of travel of the robot body (1). A filter screen (5) is installed on the flow guide slope (4) and is connected to the end side of the flow guide cavity (2).

2. A propeller anti-entanglement device for an underwater robot according to claim 1, characterized in that: The filter screen (5) has a protruding tongue (7) extending into the flow guide cavity (2) on the inner side of its top end, and the flow guide cavity (2) has a groove (8) that engages with the protruding tongue (7) on the inner wall of its top end.

3. A propeller anti-entanglement device for an underwater robot according to claim 2, characterized in that: The filter screen (5) has an extension strip (9) extending into the flow guide cavity (2) at its bottom end. The extension strip (9) has multiple positioning holes (10). A lifting locking member (6) is installed on the inner side of the bottom end of the flow guide cavity (2). One end of the locking member (6) is slidably inserted into the positioning hole (10).

4. A propeller anti-entanglement device for an underwater robot according to claim 3, characterized in that: The locking member (6) includes a push rod (62) opened on the inner side of the bottom end of the flow guide cavity (2), the bottom end of the push rod (62) extends to the outer side of the bottom end of the robot body (1), and the top end of the push rod (62) is fixed with a limiting post (61) extending into the positioning hole (10).

5. A propeller anti-entanglement device for an underwater robot according to claim 4, characterized in that: The bottom inner side of the flow guide cavity (2) is fitted with a magnetic block (11) that magnetically engages with the bottom of the limiting post (61).

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