A salt spray protection mechanism for the output end of an underwater robot motor

Abstract

The invention discloses an anti-salt spray mechanism for the output end of an underwater robot motor, belonging to the technical field of underwater robots. The invention comprises a motor body and a protective cover installed on the motor body, wherein an output mechanism is arranged in the protective cover, wherein the output mechanism comprises a connecting shaft and an extension shaft, an output hole is arranged on a side wall of the protective cover away from the motor body, the extension shaft is located in the output hole, a key slot is arranged on one end of the extension shaft away from the protective cover, a circular hole is arranged on the connecting shaft, a fixing key is installed on the inner wall of the circular hole, and the fixing key matches the key slot size on the output shaft of the motor body; the protective cover of the invention protects the output end of the motor, and can also select the extension length of the extension shaft according to different transmission components, thereby not only preventing the output shaft of the motor body from being corroded by salt spray, but also reducing the probability of the extension shaft being corroded, thereby greatly improving the service life of the motor body underwater.

Description

Technical Field

[0001] The invention relates to the technical field of underwater robots, and in particular to a salt spray prevention mechanism at the output end of a motor of an underwater robot. Background Art

[0002] Underwater robot, also known as unmanned remote-controlled submersible, is a kind of operating robot that works underwater. After years of development, it has been widely used in various industries. During the use of underwater robots, salt spray in the water will be adsorbed on the output end of the motor of the underwater robot, causing corrosion of the motor of the underwater robot, seriously affecting the service life of the underwater robot.

[0003] In the prior art, the anti-salt spray performance is generally improved by coating protective materials or adding protective mechanisms, but the protective materials are still at risk of corrosion and need to be regularly inspected and replaced. The patent with announcement number CN221614737U discloses an anti-salt spray mechanism at the output end of an underwater robot motor. The patent achieves the anti-salt spray function by sealing the output end of the motor and connecting it to the transmission component through an extension shaft. However, due to the different external components, the required length of the extension shaft is also different. If the length of the extension shaft is fixed, part of the extension shaft will be exposed to water, which will easily cause the exposed part to be corroded by salt spray. Summary of the invention

[0004] The purpose of the present invention is to provide a salt spray protection mechanism for the output end of an underwater robot motor to solve the following technical problems: due to the difference in external components, the required length of the extension shaft is also different. If the length of the extension shaft is fixed, part of the extension shaft will be exposed to water, which will easily cause the exposed part to be corroded by salt spray.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An anti-salt spray mechanism for the output end of an underwater robot motor comprises a motor body and a protective cover mounted on the motor body, an output mechanism is arranged in the protective cover, the output mechanism comprises a connecting shaft and an extension shaft, an output hole is provided on a side wall of the protective cover away from the motor body, the extension shaft is located in the output hole, a key slot is provided at one end of the extension shaft away from the protective cover, a circular hole is provided on the connecting shaft, a fixed key is installed on the inner wall of the circular hole, and the fixed key matches the key slot size on the output shaft of the motor body;

[0007] A connection adjustment assembly is provided between the connection shaft and the extension shaft, and is used to adjust the length of the extension shaft extending out of the protective cover.

[0008] As a further solution of the present invention: the protective cover is a rectangular cavity structure with an opening on one side, and an end cover is provided at the opening of the protective cover, and the end cover is fixedly connected to the motor body.

[0009] As a further solution of the present invention: the connection adjustment assembly includes two first mounting blocks fixed on the connecting shaft and a fixed block fixed on the end of the extension shaft, the top and bottom of the fixed block are fixed with a second mounting block, the two first mounting blocks are each provided with a threaded hole, the threaded holes are threadedly connected with a screw rod, one end of the two screw rods are respectively rotatably mounted on the two second mounting blocks, and the other ends of the two screw rods are each provided with a knob.

[0010] As a further solution of the present invention: an annular track is fixed in the protective cover through a support block, a slider is slidably connected in the annular track, and the slider is fixedly connected to the connecting shaft.

[0011] As a further solution of the present invention: a sealing ring is arranged in the output hole of the protective cover.

[0012] As a further solution of the present invention: a box body is fixed to the inner surface of the bottom wall of the protective cover, water receiving blocks are symmetrically arranged on the side wall of the protective cover away from the motor body, a water receiving cavity is opened on the water receiving block, water-swelling rubber is arranged on the ends of the two water receiving cavities that are close to each other, material receiving ports are symmetrically opened on both sides of the top wall of the box body, a guide plate is arranged on the side wall of the protective cover away from the motor body, and a push block is arranged on the ends of the two water-swelling rubbers that are away from each other.

[0013] As a further solution of the present invention: an L-shaped push rod is fixed on the side wall of the push block, a first stopper is fixed to one end of the push rod, a second stopper is arranged at the material receiving port of the box body, and a connecting rod is connected between the first stopper and the second stopper.

[0014] As a further solution of the present invention: a spring is connected to the first stopper, and one end of the spring contacts the inner wall of the protective cover.

[0015] Beneficial effects of the present invention:

[0016] (1) The present invention provides a protective cover, a connecting shaft, an extension shaft, a connection adjustment assembly and other structures, connects the connecting shaft with the output shaft of the motor body, and uses the connection adjustment assembly to adjust the position of the extension shaft according to the type of the required transmission component, and installs the transmission component on the extension shaft, while the extension shaft is not exposed to water. This not only prevents the output shaft of the motor body from being corroded by salt spray, but also reduces the probability of the extension shaft being corroded, thereby greatly improving the underwater service life of the motor body;

[0017] (2) The present invention provides a first mounting block, a fixing block, a screw rod and a knob. Before installation, according to the type of the transmission component, two knobs are rotated simultaneously to drive the two screw rods to rotate synchronously, thereby driving the extension shaft to move, and adjusting the length of the extension shaft extending out of the protective cover to adapt to the transmission component;

[0018] (3) The present invention provides a water receiving block, water-swelling rubber, a box body and a guide plate, etc., adds baking soda to the water receiving block, and puts an appropriate amount of white vinegar into the box body. After working for a long time, there is a risk that water will penetrate into the protective cover from the output hole. The penetrated water contacts the water-swelling rubber, causing it to expand and deform, increasing its volume. On the one hand, it fills the gap to prevent further water penetration. On the other hand, it pushes the baking soda to fall into the box body and react with the white vinegar to produce carbon dioxide, increasing the air pressure in the protective cover, thereby further reducing the probability of water penetration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the motor body and the protective cover in the disassembled state according to the first embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the three-dimensional structure of the protective cover according to the first embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the internal structure of the protective cover according to the first embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the output mechanism of the first embodiment of the present invention;

[0025] Figure 6 is a structural diagram of Embodiment 2 of the present invention;

[0026] Figure 7 This is a schematic structural diagram of a box body and a water receiving block according to a second embodiment of the present invention;

[0027] Figure 8 It is a schematic diagram of the internal structure of the box body and the water receiving block of the second embodiment of the present invention.

[0028] In the figure: 1. motor body; 2. protective cover; 3. end cover; 4. output mechanism; 401. connecting shaft; 402. extension shaft; 403. fixing key; 404. first mounting block; 405. screw rod; 406. knob; 407. second mounting block; 408. fixing block; 409. annular track; 410. slider; 411. supporting block; 5. sealing ring; 6. guide plate; 7. box body; 8. water collecting block; 9. water-swelling rubber; 10. push block; 11. push rod; 12. first stop block; 13. connecting rod; 14. second stop block; 15. spring.

[0029] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figures 1 to 5 As shown, the present invention is an anti-salt spray mechanism for the output end of an underwater robot motor, comprising a motor body 1 and a protective cover 2 installed on the motor body 1, an output mechanism 4 is arranged in the protective cover 2, the output mechanism 4 comprises a connecting shaft 401 and an extension shaft 402, an output hole is provided on the side wall of the protective cover 2 away from the motor body 1, the extension shaft 402 is located in the output hole, a key groove is provided at one end of the extension shaft 402 away from the protective cover 2, a circular hole is provided on the connecting shaft 401, a fixed key 403 is installed on the inner wall of the circular hole, and the fixed key 403 matches the key groove size on the output shaft of the motor body 1; the connecting shaft 401 and the extension shaft 402 are connected to each other. A connection adjustment component is provided between 402, which is used to adjust the length of the extension shaft 402 extending out of the protective cover 2; before installation, the connection adjustment component is first used to adjust the position of the extension shaft 402 so that it extends to an appropriate length, and then the installation is completed with the transmission component, and then the protective cover 2 is installed on the motor body 1, the circular hole on the connecting shaft 401 is docked with the output shaft of the motor body 1, and the fixing key 403 is inserted into the keyway of the output shaft to complete the installation. When in use, the output end of the motor body 1 is protected by the protective cover 2 from contact with water, and the extension shaft 402 will not be excessively exposed to water, which greatly reduces the risk of corrosion by salt spray.

[0032] See also Figure 1 and Figure 2 As shown, the protective cover 2 is a rectangular cavity structure with an opening on one side, and an end cover 3 is provided at the opening of the protective cover 2, and the end cover 3 is fixedly connected to the motor body 1; the protective cover 2 and the motor body 1 are installed using the end cover 3, and a sealing ring can be provided on the contact surface between the end cover 3 and the motor body 1 to further improve the sealing performance.

[0033] See also Figure 4 and Figure 5The connection adjustment component includes two first mounting blocks 404 fixed on the connecting shaft 401 and a fixing block 408 fixed on the end of the extension shaft 402. The second mounting blocks 407 are fixed to the top and bottom of the fixing block 408. Threaded holes are provided on the two first mounting blocks 404, and screws 405 are threadedly connected in the threaded holes. One ends of the two screws 405 are rotatably mounted on the two second mounting blocks 407 respectively, and the other ends of the two screws 405 are installed with knobs 406. When adjustment is required, the two knobs 406 are rotated synchronously to make the two screws 405 rotate synchronously. The movement of the screw 405 drives the second mounting block 407 and the fixing block 408 to move, so that the position of the extension shaft 402 can be changed.

[0034] See also Figure 4 and Figure 5 A circular track 409 is fixed in the protective cover 2 through a support block 411, a slider 410 is slidably connected in the circular track 409, and the slider 410 is fixedly connected to the connecting shaft 401; a sealing ring 5 is arranged in the output hole of the protective cover 2; in order to improve the stability of rotation, the circular track 409 is used to guide and limit the connecting shaft 401 to improve the stability of rotation, and a sealing ring 5 is arranged in the output hole to reduce the probability of water penetrating into the protective cover 2 from the output hole.

[0035] Embodiment 2: Based on the embodiment 1, moisture may still penetrate into the protective cover 2 during long-term operation. In order to reduce the corrosion caused by salt spray, in this embodiment, refer to Figures 6 to 8 As shown, a box body 7 is fixed to the inner surface of the bottom wall of the protective cover 2, and a water receiving block 8 is symmetrically arranged on the side wall of the protective cover 2 away from the motor body 1, and a water receiving cavity is opened on the water receiving block 8. The ends of the two water receiving cavities close to each other are both provided with water-expanding rubber 9, and material receiving ports are symmetrically opened on both sides of the top wall of the box body 7. A guide plate 6 is arranged on the side wall of the protective cover 2 away from the motor body 1, and a push block 10 is arranged at the ends of the two water-expanding rubbers 9 away from each other; baking soda is added to the water receiving cavity of the water receiving block 8, and a proper amount of white vinegar is filled into the box body 7. When water penetrates into the protective cover 2 from the output hole, it flows into the water receiving block 8 under the action of the guide plate 6. The water contacts the water-expanding rubber 9 to expand and deform, and the volume increases. On the one hand, it can fill the gap, and on the other hand, it pushes the push block 10 to move, and pushes the baking soda into the box body 7. The baking soda reacts with the white vinegar to produce carbon dioxide gas, thereby increasing the air pressure in the protective cover 2, so that water is not easy to enter the protective cover 2.

[0036] See also Figures 6 to 8As shown, an L-shaped push rod 11 is fixed on the side wall of the push block 10, a first stopper 12 is fixed at one end of the push rod 11, a second stopper 14 is provided at the material receiving port of the box body 7, a connecting rod 13 is connected between the first stopper 12 and the second stopper 14, a spring 15 is connected to the first stopper 12, one end of the spring 15 contacts the inner wall of the protective cover 2; the underwater robot is prone to shaking during operation, in order to prevent baking soda and white vinegar from leaking due to shaking, the first stopper 12 blocks one end of the water receiving block 8, and the second stopper 14 blocks the material receiving port of the box body 7 to prevent baking soda and white vinegar from leaking.

[0037] The working principle of the present invention is as follows: before installation, the two knobs 406 are rotated synchronously to make the two screw rods 405 rotate synchronously. The movement of the screw rods 405 drives the second installation block 407 and the fixed block 408 to move, so as to change the position of the extension shaft 402 so that it extends to a suitable length. Then, the installation is completed with the transmission component (not shown). Then, the protective cover 2 is installed on the motor body 1, the circular hole on the connecting shaft 401 is docked with the output shaft of the motor body 1, and the fixed key 403 is inserted into the keyway of the output shaft to complete the installation. When in use, the output end of the motor body 1 is protected by the protective cover 2 from contact with water, and the extension shaft 402 is not excessively exposed to water, which greatly reduces the risk of corrosion by salt spray.

[0038] After working for a long time, there is still a possibility that moisture will penetrate into the protective cover 2. In order to reduce the penetration of moisture, baking soda is added to the water receiving cavity of the water receiving block 8, and an appropriate amount of white vinegar is loaded into the box body 7. When moisture penetrates into the protective cover 2 from the output hole, it flows into the water receiving block 8 under the action of the guide plate 6. The water contacts the water-swelling rubber 9 to make it expand and deform, and its volume increases. On the one hand, it can fill the gap. On the other hand, the water-swelling rubber 9 pushes the push block 10 to move after expansion. At the same time, the first block 12 and the second block 14 move synchronously to push the baking soda into the box body 7. The baking soda reacts with the white vinegar to produce carbon dioxide gas, thereby increasing the air pressure in the protective cover 2, making it difficult for water to enter the protective cover 2, and the generated gas is discharged from the output hole, so that bubbles are generated on the water surface. In the laboratory or shallow waters, the staff can also find it in time and perform maintenance on the underwater robot to avoid causing greater losses.

[0039] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A salt spray protection mechanism for the output end of an underwater robot motor, comprising a motor body (1) and a protective cover (2) mounted on the motor body (1), characterized in that: An output mechanism (4) is arranged in the protective cover (2), and the output mechanism (4) comprises a connecting shaft (401) and an extension shaft (402); an output hole is provided on a side wall of the protective cover (2) away from the motor body (1); the extension shaft (402) is located in the output hole; a key slot is provided at one end of the extension shaft (402) away from the protective cover (2); a circular hole is provided on the connecting shaft (401); a fixing key (403) is installed on the inner wall of the circular hole; the fixing key (403) matches the size of the key slot on the output shaft of the motor body (1); A connection adjustment component is provided between the connection shaft (401) and the extension shaft (402), and is used to adjust the length of the extension shaft (402) extending out of the protective cover (2); The connection adjustment assembly comprises two first mounting blocks (404) fixed on the connection shaft (401) and a fixing block (408) fixed on the end of the extension shaft (402); the second mounting blocks (407) are fixed on the top and bottom of the fixing block (408); threaded holes are provided on the two first mounting blocks (404); screw rods (405) are threadedly connected in the threaded holes; one end of the two screw rods (405) are rotatably mounted on the two second mounting blocks (407) respectively; and the other end of the two screw rods (405) is mounted with knobs (406); A box body (7) is fixed to the inner surface of the bottom wall of the protective cover (2), a water receiving block (8) is symmetrically arranged on the side wall of the protective cover (2) away from the motor body (1), a water receiving cavity is provided on the water receiving block (8), and water-swelling rubber (9) is provided at the ends of the two water receiving cavities close to each other, and material receiving openings are symmetrically provided on both sides of the top wall of the box body (7), a guide plate (6) is provided on the side wall of the protective cover (2) away from the motor body (1), and a push block (10) is provided at the ends of the two water-swelling rubbers (9) away from each other, baking soda is added into the water receiving cavity of the water receiving block (8), and white vinegar is filled into the box body (7).

2. The anti-salt spray mechanism at the output end of the underwater robot motor according to claim 1, characterized in that: The protective cover (2) is a rectangular cavity structure with an opening on one side, and an end cover (3) is provided at the opening of the protective cover (2), and the end cover (3) is fixedly connected to the motor body (1).

3. The anti-salt spray mechanism at the output end of the underwater robot motor according to claim 2, characterized in that: An annular track (409) is fixed in the protective cover (2) via a support block (411), a sliding block (410) is slidably connected in the annular track (409), and the sliding block (410) is fixedly connected to the connecting shaft (401).

4. The anti-salt spray mechanism at the output end of the motor of an underwater robot according to claim 1, characterized in that: A sealing ring (5) is arranged in the output hole of the protective cover (2).

5. The anti-salt spray mechanism at the output end of the underwater robot motor according to claim 1, characterized in that: An L-shaped push rod (11) is fixed on the side wall of the push block (10), a first stopper (12) is fixed to one end of the push rod (11), a second stopper (14) is provided at the material receiving opening of the box body (7), and a connecting rod (13) is connected between the first stopper (12) and the second stopper (14).

6. The anti-salt spray mechanism at the output end of the motor of an underwater robot according to claim 5, characterized in that: A spring (15) is connected to the first stopper (12), and one end of the spring (15) contacts the inner wall of the protective cover (2).

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