Waterproof motor for underwater robot

Abstract

The utility model discloses a waterproof motor for an underwater robot, and the motor comprises a motor body which is internally provided with a first pressure maintaining space; the front end cover is arranged at one end of the motor body; the rear end cover is arranged at the other end of the motor body; the main shaft is arranged in the motor body and partially extends out of the front end cover, and the main shaft is rotatably connected with the front end cover and the rear end cover; the first bearing is arranged between the main shaft and the front end cover; the first air inlet is formed in the rear end cover, and the first air inlet is communicated with the first pressure maintaining space. The first air inlet is arranged to introduce air into the motor body so as to increase the pressure of one side, close to the motor body, of the front end cover and ensure that the pressures on the two sides of the front end cover are similar, so that water is prevented from entering the motor body due to pressure difference. By arranging the first air inlet, the air pressure in the first pressure maintaining space is adjusted, and the situation that the pressure on the two sides of the front end cover is inconsistent, and water inflow and other dangerous situations are induced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a waterproof motor for an underwater robot. Background Art

[0002] Underwater motors are widely used in a variety of tasks in deep-sea environments, including subsea oil and gas extraction, submarine pipeline laying, marine scientific research, and propulsion systems for underwater vehicles. The design and application of these motors involve knowledge from multiple fields, including mechanical engineering, electrical engineering, and materials science, and are of great significance to deep-sea resource development and marine scientific research.

[0003] Since the main shaft of the motor needs to extend out of the front cover and connect with external components, and underwater robots will cause water to submerge the entire motor in some cases, at this time due to the pressure outside the motor, the lubricating oil in the connecting bearings between the main shaft and the front cover may penetrate into the interior of the motor under the action of water pressure, and may even cause water to penetrate directly into the interior of the motor from the bearings, causing great safety hazards. Utility Model Content

[0004] The technical problem to be solved by the utility model is: the utility model provides a waterproof motor for an underwater robot to solve the problem that water may penetrate into the interior of the motor under the action of water pressure.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a waterproof motor for an underwater robot, comprising: a motor body, a first pressure-maintaining space formed in the motor body; a front end cover, the front end cover is arranged at one end of the motor body; a rear end cover, the rear end cover is arranged at the other end of the motor body; a main shaft, the main shaft is arranged in the motor body and partially extends out of the front end cover, the main shaft is rotatably connected to the front end cover and the rear end cover; a first bearing, the first bearing is arranged between the main shaft and the front end cover; a first air inlet, the first air inlet is arranged in the rear end cover, and the first air inlet is connected to the first pressure-maintaining space.

[0006] The beneficial effects of the present invention are as follows: the main shaft portion extends beyond the front end cover to connect to the components to be connected, providing rotational power for the components to be connected. A first bearing is provided between the main shaft and the front end cover, allowing the first bearing to rotate relative to the front end cover. During use, the first bearing is generally filled with lubricating oil. When the motor body is completely submerged in water, one side of the front end cover is filled with water and the other side is filled with air. This creates a significant pressure difference between the two sides of the front end cover. To prevent water from entering the motor body due to this pressure difference, a first air inlet is provided to introduce air into the motor body, thereby increasing the pressure on the side of the front end cover closest to the motor body and ensuring similar pressures on both sides of the front end cover, thereby preventing water from entering the motor body due to the pressure difference. When the water pressure disappears, air is extracted from the motor body through the first air inlet to prevent excessive pressure within the motor body, which could cause the lubricating oil in the first bearing to be squeezed out and affect its operation. The first air inlet is provided to adjust the air pressure within the first pressure-maintaining space, thereby preventing inconsistent pressures on both sides of the front end cover, which could lead to dangerous situations such as water ingress.

[0007] Preferably, it also includes:

[0008] A barrier member is provided on the front end cover, and the barrier member and the front end cover enclose a second pressure-maintaining space;

[0009] A sealing member, the sealing member being arranged between the barrier member and the main shaft;

[0010] The second air inlet is connected to the second pressure-maintaining space.

[0011] Preferably, the front end cover is provided with a first annular groove, the rear end cover is provided with a second annular groove, and both ends of the motor body are provided with annular protrusions adapted to the first annular groove and the second annular groove.

[0012] Preferably, it also includes:

[0013] The convex surface areas are arranged at intervals on the outer peripheral surface of the motor body.

[0014] Preferably, it also includes:

[0015] An air pressure sensor is spaced apart from the front cover and is located in the second pressure-maintaining space;

[0016] The water pressure sensor is arranged at intervals on the front end cover and is located on a side of the front end cover away from the motor body.

[0017] Preferably, it also includes:

[0018] The second bearing is arranged between the rear end cover and the main shaft.

[0019] Preferably, it also includes:

[0020] A first fastener, the motor body and the front end cover are connected by the first fastener;

[0021] The motor body and the rear end cover are connected via the second fastener.

[0022] Preferably, it also includes:

[0023] The sealant is arranged between the annular protrusion and the first annular groove and the second annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional structural diagram of a waterproof motor for underwater robots;

[0025] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 3 A cross-sectional view of a waterproof motor for an underwater robot

[0027] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0028] Figure 5 for Figure 3 A partial enlarged view of point C in the middle.

[0029] In the figure: motor body 1, convex area 101, annular protrusion 102, rear end cover 2, first air inlet 201, front end cover 3, main shaft 5, water pressure sensor 6, second air inlet 7, second fastener 8, first fastener 9, second bearing 10, barrier 11, air pressure sensor 12, first bearing 13, seal 14. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0031] In this article, terms such as "upper, lower, inside, outside" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" are only used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0032] Example

[0033] like Figure 1-5As shown, a waterproof motor for an underwater robot includes: a motor body 1, a first pressure-maintaining space is formed in the motor body 1; a front end cover 3, the front end cover 3 is arranged at one end of the motor body 1; a rear end cover 2, the rear end cover 2 is arranged at the other end of the motor body 1; a main shaft 5, the main shaft 5 is arranged in the motor body 1 and partially extends out of the front end cover 3, and the main shaft 5 is rotatably connected to the front end cover 3 and the rear end cover 2; a first bearing 13, the first bearing 13 is arranged between the main shaft 5 and the front end cover 3; a first air inlet 201, the first air inlet 201 is arranged in the rear end cover 2, and the first air inlet 201 is connected to the first pressure-maintaining space.

[0034] Specifically, the main shaft 5 partially extends out of the front end cover 3 to connect the components to be connected, providing rotational power for the components to be connected. A first bearing 13 is provided between the main shaft 5 and the front end cover 3 so that the first bearing 13 can rotate relative to the front end cover 3. During use, the first bearing 13 is generally provided with lubricating oil inside. When the motor body 1 is completely submerged in water, one side of the front end cover 3 is water and the other side is air. At this time, a relatively large pressure difference is generated on both sides of the front end cover 3. In order to prevent water from entering the motor body 1 due to this pressure difference, a first air inlet 201 is provided to introduce air into the motor body 1 to increase the pressure on the side of the front end cover 3 close to the motor body 1, ensuring that the pressure on both sides of the front end cover 3 is similar, thereby preventing water from entering the motor body 1 due to the pressure difference. When the water pressure disappears, the air in the motor body 1 is extracted through the first air inlet 201 to prevent the internal pressure of the motor body 1 from being too high, which would cause the lubricating oil in the first bearing 13 to be squeezed out and affect the operation of the first bearing 13. The first air inlet 201 is provided to adjust the air pressure in the first pressure-maintaining space, thereby avoiding inconsistent pressures on both sides of the front end cover 3 and preventing dangerous situations such as water ingress from occurring.

[0035] The applicant would like to emphasize that the air inlet and outlet structure connected to the first air inlet 201, i.e., the structure forming the ventilation circuit, is considered mature prior art and includes at least an air source and a power source. The specific structure thereof will not be elaborated upon here. Furthermore, the improvements of this application only relate to the motor body 1, the front cover 3, and the rear cover 2, and do not limit the power structure within the motor body 1.

[0036] Furthermore, it also includes: a barrier 11, which is arranged on the front end cover 3, and the barrier 11 and the front end cover 3 enclose a second pressure-maintaining space; a seal 14, which is arranged between the barrier 11 and the main shaft 5; and a second air inlet 7, which is connected to the second pressure-maintaining space. Since the air pressure adjustment in the first pressure-maintaining space has a hysteresis, hydraulic oil and water may have entered the motor through the end cover. In order to prevent water from directly entering the power structure of the motor, a second pressure-maintaining space is specially provided. When there is a pressure difference on both sides of the front end cover 3, the first air inlet 201 and the second air inlet 7 work simultaneously. The specific pressure conditions of the first pressure-maintaining space, the second pressure-maintaining space and the outside of the front end cover 3 are: first pressure-maintaining space> second pressure-maintaining space> front end cover 3. By providing a second pressure-maintaining space, the possibility of water directly entering the first pressure-maintaining space is further reduced, thereby increasing the safety performance of the motor. There is a gap between the seal 14 and the main shaft 5. The function of the seal 14 is to minimize the gap between the main shaft 5 and the barrier 11 to separate the first pressure-maintaining space and the second pressure-maintaining space as much as possible. Preferably, the seal 14 is arranged on the barrier 11.

[0037] Furthermore, the front end cover 3 is provided with a first annular groove, the rear end cover 2 is provided with a second annular groove, and an annular protrusion 102 is provided at both ends of the motor body 1, which adapts to the first annular groove and the second annular groove. The annular protrusion 102 at one end is inserted into the first annular groove, and the annular protrusion 102 at the other end is inserted into the second annular groove, thereby forming a preliminary connection between the motor body 1 and the front end cover 3 and the rear end cover 2. The cooperation between the annular protrusion 102 and the first annular groove can enhance the sealing effect between the motor body 1 and the front end cover 3. Similarly, the cooperation between the annular protrusion 102 and the second annular groove can enhance the sealing effect between the motor body 1 and the rear end cover 2.

[0038] Furthermore, it also includes: convex areas 101, which are arranged at intervals on the outer peripheral surface of the motor body 1. The convex areas 101 are used to increase the contact area between the motor body 1 and the external environment, thereby facilitating heat dissipation of the motor body 1.

[0039] Furthermore, the system further includes: an air pressure sensor 12, which is spaced apart from the front end cover 3 and located within the second pressure-maintaining space; and a water pressure sensor 6, which is spaced apart from the front end cover 3 and located on the side of the front end cover 3 away from the motor body 1. The air pressure sensor 12 is used to detect the pressure on the side of the front end cover 3 close to the motor body 1, and the water pressure sensor 6 is used to detect the pressure on the side of the front end cover 3 away from the motor body 1. When the pressure on both sides is inconsistent, the pressure in the first and second pressure-maintaining spaces is adjusted through the first air inlet 201 and the second air inlet 7, thereby making the pressure on both sides of the front end cover 3 consistent, thereby avoiding oil and water leakage caused by the inconsistent pressure on both sides of the front end cover 3.

[0040] Furthermore, the invention further comprises a second bearing 10 , which is disposed between the rear end cover 2 and the main shaft 5 . The main shaft 5 is rotatably connected to the rear end cover 2 via the second bearing 10 .

[0041] Furthermore, the motor body 1 and the front end cover 3 are connected by a first fastener 9, and the motor body 1 and the rear end cover 2 are connected by a second fastener 8. The first fastener 9 and the second fastener 8 are preferably bolts, and the first fastener 9 realizes a detachable connection between the motor body 1 and the front end cover 3, and the second fastener 8 realizes a detachable connection between the motor body 1 and the rear end cover 2.

[0042] Furthermore, the motor body 1 further includes a sealant, which is disposed between the annular protrusion 102 and the first and second annular grooves. Specifically, the sealant is disposed at the connection between the annular protrusion 102 and the first annular groove at one end of the motor body 1, and the sealant is also disposed at the connection between the annular protrusion 102 and the second annular groove at the other end of the motor body 1, thereby further enhancing the sealing effect.

[0043] The above-mentioned technical features can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A waterproof motor for an underwater robot, characterized in that: include: A motor body (1), wherein a first pressure-maintaining space is formed in the motor body (1); A front end cover (3), the front end cover (3) being arranged at one end of the motor body (1); A rear end cover (2), the rear end cover (2) being arranged at the other end of the motor body (1); A main shaft (5), the main shaft (5) being arranged in the motor body (1) and partially extending out of the front end cover (3), the main shaft (5) being rotatably connected to the front end cover (3) and the rear end cover (2); a first bearing (13), the first bearing (13) being disposed between the main shaft (5) and the front end cover (3); A first air inlet (201), wherein the first air inlet (201) is arranged on the rear end cover (2), and the first air inlet (201) is connected to the first pressure-maintaining space.

2. The waterproof motor for underwater robot according to claim 1, characterized in that: Also includes: a barrier member (11), the barrier member (11) being arranged on the front end cover (3), the barrier member (11) and the front end cover (3) enclosing to form a second pressure-maintaining space; a sealing member (14), the sealing member (14) being disposed between the barrier member (11) and the main shaft (5); A second air inlet (7), wherein the second air inlet (7) is connected to the second pressure-maintaining space.

3. The waterproof motor for underwater robot according to claim 1, characterized in that: The front end cover (3) is provided with a first annular groove, the rear end cover (2) is provided with a second annular groove, and both ends of the motor body (1) are provided with annular protrusions (102) adapted to the first annular groove and the second annular groove.

4. The waterproof motor for underwater robot according to claim 1, characterized in that: Also includes: Convex areas (101), the convex areas (101) are arranged at intervals on the outer peripheral surface of the motor body (1).

5. The waterproof motor for underwater robot according to claim 2, characterized in that: Also includes: an air pressure sensor (12), the air pressure sensor (12) being spaced apart from the front end cover (3) and located in the second pressure-maintaining space; A water pressure sensor (6) is arranged at intervals on the front end cover (3) and is located on a side of the front end cover (3) away from the motor body (1).

6. The waterproof motor for underwater robot according to claim 1, characterized in that: Also includes: A second bearing (10), the second bearing (10) is arranged between the rear end cover (2) and the main shaft (5).

7. The waterproof motor for underwater robot according to claim 3, characterized in that: Also includes: A first fastener (9), the motor body (1) and the front end cover (3) are connected via the first fastener (9); A second fastener (8), the motor body (1) and the rear end cover (2) are connected via the second fastener (8).

8. The waterproof motor for underwater robot according to claim 7, characterized in that: Also includes: A sealant is provided between the annular protrusion (102) and the first annular groove and the second annular groove.

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