Efficient heat dissipation sealing and stress dispersion structure of underwater robot power system

Abstract

The utility model discloses a high-efficiency heat dissipation sealing and stress dispersion structure of an underwater robot power system, which adopts an independent shaft sleeve to be connected with a motor shaft, realizes axial and angular fine adjustment space through a key groove design in clearance fit, and effectively reduces potential damage of vibration to a sealing structure. In terms of heat dissipation, the aluminum alloy motor support is adopted, the shape of the aluminum alloy motor support is matched with the outer wall of the motor and the inner wall of the movement shell, and a heat conduction path is optimized. And by filling the heat conduction material, the heat conduction efficiency of the motor is further improved, and the efficient heat dissipation of the machine core shell is ensured. The heat dissipation performance is improved, the influence of vibration on the transmission structure is reduced through the stress dispersion design, and therefore the service life of the underwater robot is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, sealing and stress dispersion of a power system of an underwater robot, and in particular to a high-efficiency heat dissipation sealing and stress dispersion structure of a power system of an underwater robot. Background Art

[0002] With the continuous development of science and technology, underwater robots are increasingly used in various fields, especially in the field of pool cleaning. However, in the process of continuous operation of existing underwater pool cleaning robots, the heat generated by the motor is often difficult to be effectively controlled, which not only affects the working efficiency of the robot, but also may cause damage to key components and shorten the service life of the robot.

[0003] In traditional underwater robot designs, the heat generated by the motor is mainly dissipated through natural heat dissipation or small heat dissipation devices. However, this method has low heat dissipation efficiency, especially in underwater environments, where the heat conduction efficiency of water is much lower than that of air, making the heat dissipation problem more prominent. Heat accumulation may cause heat deformation of the seals, or even cause seal failure, resulting in serious faults such as water ingress into the robot.

[0004] In addition, during the assembly process of existing underwater robots, due to vibration and temperature changes, the seals are easily affected by stress, which leads to aging, deformation and other problems, seriously affecting the sealing effect. Once the seal fails, it will not only cause water to enter the robot, but also damage the motor and other electronic components, and even cause safety problems.

[0005] Therefore, how to achieve efficient heat dissipation of the motor in an underwater environment, while improving the reliability of the sealing system and preventing sealing and heat dissipation problems caused by vibration, heat and stress changes has become a technical problem to be solved by the utility model. Utility Model Content

[0006] The technical problem solved by the present utility model is to provide a high-efficiency heat dissipation seal and stress dispersion structure for an underwater robot power system in response to the defects existing in the above-mentioned prior art, so as to solve the problems of thermal management runaway, sealing failure and sealing failure caused by stress changes that may occur during the operation of the underwater robot proposed in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0008] An efficient heat dissipation sealing and stress dispersion structure of an underwater robot power system, comprising a movement shell and a transmission structure and a heat dissipation structure arranged on the movement shell;

[0009] The transmission structure includes an independent sleeve connected to the motor shaft of the motor, the independent sleeve has a keyway with clearance matching the motor shaft, and the independent sleeve is rotatably connected with the motor shaft through the keyway so that a certain axial and angular activity space is formed between the sleeve and the motor shaft through the independent sleeve to reduce the influence of vibration on the sealing structure;

[0010] The heat dissipation structure includes an aluminum alloy motor bracket, through which the motor is fixed in the movement shell. The shape of the motor bracket matches the outer wall of the motor and the inner wall of the movement shell of the underwater robot. The outer wall of the motor and the movement shell of the underwater robot are filled with thermal conductive material to conduct the heat generated by the motor to the movement shell and dissipate the heat through the movement shell.

[0011] As a further solution of the utility model, the efficient heat dissipation sealing and stress dispersion structure of the underwater robot power system also includes a bearing, a first sealing ring and a second sealing ring. A transmission avoidance channel is arranged on the movement shell, and a bearing is fixedly arranged in the transmission avoidance channel of an independent sleeve. The independent sleeve is rotatably connected with the movement shell through the bearing. The independent sleeve includes an inner end facing the center of the movement shell and an outer end corresponding to the inner end. A first rubber sealing ring is sleeved on the outer side surface of the independent sleeve and close to the outer end of the independent sleeve. The first rubber sealing ring includes an annular inner side surface and an annular outer side surface. The annular inner side surface of the first rubber sealing ring is in close contact with the independent sleeve, and the annular outer side surface of the first rubber sealing ring is in close contact with the inner side wall of the transmission avoidance channel. The motor includes a motor shell, and the motor shell of the motor includes a power end with a motor shaft. The power end of the motor shell is tightly matched with the movement shell through the second rubber sealing ring.

[0012] As a further solution of the utility model, the independent shaft sleeve is made of ceramic composite material or high-temperature alloy material.

[0013] As a further solution of the utility model, the contact portion between the aluminum alloy motor bracket and the inner wall of the movement housing is provided with an uneven structure for increasing the heat conduction area.

[0014] As a further solution of the utility model, the movement shell is made of a metal material with high thermal conductivity, such as an aluminum alloy or a copper alloy.

[0015] As a further solution of the utility model, the inner diameter of the independent sleeve is larger than the outer diameter of the motor shaft, forming a certain radial gap, which structurally allows the motor shaft to perform slight radial and angular movements inside the sleeve.

[0016] As a further solution of the present invention, the thermally conductive material is thermally conductive silicone.

[0017] Compared with the prior art, the utility model has the following beneficial effects: an independent sleeve is connected to the motor shaft, and the keyway design with clearance fit realizes the fine-tuning space in the axial and angular directions, which effectively reduces the potential damage of vibration to the sealing structure. In terms of heat dissipation, an aluminum alloy motor bracket is used, and its shape matches the outer wall of the motor and the inner wall of the movement shell, which optimizes the heat conduction path. By filling with heat-conducting materials, the heat conduction efficiency of the motor is further improved, and the efficient heat dissipation of the movement shell is ensured. It not only improves the heat dissipation performance, but also reduces the influence of vibration on the transmission structure through stress dispersion design, thereby extending the service life of the underwater robot.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a structural schematic diagram of the movement shell of the utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective.

[0022] Figure 3 for Figure 2 AA cross-sectional view of .

[0023] Figure 4 for Figure 3 A magnified schematic diagram of part A.

[0024] The reference numerals and names in the figures are as follows:

[0025] Movement housing 1, transmission structure 2, heat dissipation structure 3, motor 4, motor shaft 5, independent shaft sleeve 6, aluminum alloy motor bracket 7, bearing 8, first sealing ring 9, second sealing ring 10, first rubber sealing ring 11, motor housing 12 and heat conductive material 13. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. 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.

[0027] See also Figure 1 —4. In the embodiment of the utility model, a high-efficiency heat dissipation sealing and stress dispersion structure of an underwater robot power system includes a movement shell 1 and a transmission structure 2 and a heat dissipation structure 3 arranged on the movement shell 1;

[0028] The transmission structure 2 includes an independent sleeve 6 connected to the motor shaft 5 of the motor 4. The independent sleeve 6 has a keyway with a clearance fit that matches the motor shaft 5. The independent sleeve 6 is rotatably connected to the motor shaft 5 through the keyway so that a certain axial and angular activity space is formed between the sleeve and the motor shaft 5 through the independent sleeve 6 to reduce the influence of vibration on the sealing structure.

[0029] The heat dissipation structure 3 includes an aluminum alloy motor bracket 7, and the motor 4 is fixedly arranged in the movement shell 1 through the aluminum alloy motor bracket 7. The shape of the motor 4 matches the outer wall of the motor 4 and the inner wall of the movement shell 1 of the underwater robot, and the outer wall of the motor 4 and the movement shell 1 of the underwater robot are filled with heat-conducting material 13 for conducting the heat generated by the motor 4 to the movement shell 1 and dissipating the heat through the movement shell 1.

[0030] The efficient heat dissipation sealing and stress dispersion structure of the underwater robot power system also includes a bearing 8, a first sealing ring 9 and a second sealing ring 10. A transmission avoidance channel is set on the movement shell 1. The bearing 8 is fixedly set in the transmission avoidance channel of the independent sleeve 6. The independent sleeve 6 is rotatably connected with the movement shell 1 through the bearing 8. The independent sleeve 6 includes an inner end facing the center of the movement shell 1 and an outer end corresponding to the inner end. The outer side surface of the independent sleeve 6 and the position close to the outer end of the independent sleeve 6 are sleeved with a first rubber sealing ring 11. The first rubber sealing ring 11 includes an annular inner side surface and an annular outer side surface. The annular inner side surface of the first rubber sealing ring 11 is in close contact with the independent sleeve 6, and the annular outer side surface of the first rubber sealing ring 11 is in close contact with the inner side wall of the transmission avoidance channel. The motor 4 includes a motor shell 12. The motor shell 12 of the motor 4 includes a power end with a motor shaft 5. The power end of the motor shell 12 is tightly matched with the movement shell 1 through the second rubber sealing ring.

[0031] The independent sleeve 6 is made of ceramic composite material or high-temperature alloy material, which has high hardness, wear resistance and excellent high-temperature stability, thereby structurally ensuring that the sleeve can maintain stable physical properties during continuous operation.

[0032] The contact portion between the aluminum alloy motor bracket 7 and the inner wall of the core housing 1 is designed with an uneven structure to increase the heat conduction area, and is used in conjunction with the heat conducting material 13 to enhance the heat conduction effect.

[0033] The movement case 1 is made of metal materials with high thermal conductivity such as aluminum alloy or copper alloy. These materials have dense lattices and excellent thermal conductivity paths in structure, so that the internal heat can be efficiently conducted to the surface of the movement case 1 and dissipated into the surrounding water.

[0034] The inner hole diameter of the independent sleeve 6 is larger than the outer diameter of the motor shaft 5 of the motor 4, forming a certain radial gap. The gap structurally allows the motor shaft 5 to make slight radial and angular movements inside the sleeve, so that when external vibration or internal stress changes, the motor shaft 5 can move relatively inside the sleeve, thereby achieving the effect of dispersing stress and reducing direct impact on the seal; the thermal conductive material 13 is thermal conductive silicone.

[0035] Embodiment 1:

[0036] This embodiment provides a highly efficient heat dissipation sealing and stress dispersion structure for an underwater robot power system, which is mainly used in swimming pool cleaning underwater robots. It solves the problems of poor heat dissipation of the motor 4 and susceptibility of the sealing system to vibration, heat and stress changes during the continuous operation of the underwater robot.

[0037] Specifically, the structure includes a movement shell 1 and a transmission structure 2 and a heat dissipation structure 3 arranged on the movement shell 1. The movement shell 1 is made of aluminum alloy material, and utilizes its excellent thermal conductivity to efficiently conduct the heat generated inside to the outer shell and dissipate it into the surrounding water.

[0038] The core of the transmission structure 2 is an independent sleeve 6, which is made of ceramic composite material and has the characteristics of high hardness, wear resistance and high temperature stability. The independent sleeve 6 and the motor shaft 5 of the motor 4 are connected to each other by a keyway to achieve rotational fit, and a certain axial and angular activity space is formed between the sleeve and the motor shaft 5. This design allows the motor shaft 5 to move slightly in the sleeve, thereby reducing the impact of vibration on the sealing structure. At the same time, the second sealing ring 10 also has the effect of buffering vibration, which is conducive to the effect of avoiding small vibrations.

[0039] In terms of heat dissipation structure 3, the motor 4 is fixed in the movement shell 1 through an aluminum alloy motor bracket 7. The shape of the motor 4 bracket matches the outer wall of the motor 4 and the inner wall of the movement shell 1 to ensure a tight fit. A heat conductive material 13 is filled between the outer wall of the motor 4 and the movement shell 1 to quickly conduct the heat generated by the motor 4 to the movement shell 1, and then dissipate the heat into the water through the movement shell 1.

[0040] In addition, the structure also includes a bearing 8, a first sealing ring 9 and a second sealing ring 10 to ensure the sealing performance of the movement. The independent sleeve 6 is rotatably connected to the movement housing 1 through the bearing 8, and rubber sealing rings are set at key positions to prevent moisture from penetrating into the movement.

[0041] In practical applications, the efficient heat dissipation sealing and stress dispersion structure of the underwater robot power system have shown significant advantages. First, through the efficient heat dissipation design of the aluminum alloy core shell 1 and the thermal conductive material 13, the heat generated by the motor 4 during continuous operation is effectively controlled, avoiding performance degradation and component damage caused by heat accumulation. Secondly, the design of the independent shaft sleeve 6 not only improves the smoothness of the transmission, but also effectively disperses the impact of vibration and stress on the sealing structure, thereby improving the reliability of the sealing system.

[0042] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An efficient heat dissipation sealing and stress dispersion structure for an underwater robot power system, characterized in that: It includes a movement shell and a transmission structure and a heat dissipation structure arranged on the movement shell; The transmission structure includes an independent shaft sleeve connected to the motor shaft of the motor, the independent shaft sleeve has a keyway with clearance matching the motor shaft, and the independent shaft sleeve is rotatably connected with the motor shaft through the keyway to form an axial and angular activity space between the shaft sleeve and the motor shaft; The heat dissipation structure includes an aluminum alloy motor bracket, through which the motor is fixed in the movement shell. The shape of the motor bracket matches the outer wall of the motor and the inner wall of the movement shell of the underwater robot, and the outer wall of the motor and the movement shell of the underwater robot are filled with heat conductive material.

2. The efficient heat dissipation sealing and stress dispersion structure of an underwater robot power system according to claim 1, characterized in that: The efficient heat dissipation sealing and stress dispersion structure of the underwater robot power system also includes a bearing, a first sealing ring and a second sealing ring. A transmission avoidance channel is arranged on the movement shell, and a bearing is fixedly arranged in the transmission avoidance channel of an independent sleeve. The independent sleeve is rotatably connected with the movement shell through the bearing. The independent sleeve includes an inner end facing the center of the movement shell and an outer end corresponding to the inner end. A first rubber sealing ring is sleeved on the outer side surface of the independent sleeve and close to the outer end of the independent sleeve. The first rubber sealing ring includes an annular inner side surface and an annular outer side surface. The annular inner side surface of the first rubber sealing ring is in close contact with the independent sleeve, and the annular outer side surface of the first rubber sealing ring is in close contact with the inner side wall of the transmission avoidance channel. The motor includes a motor shell, and the motor shell of the motor includes a power end with a motor shaft. The power end of the motor shell is in close contact with the movement shell through the second rubber sealing ring.

3. The high-efficiency heat dissipation sealing and stress dispersion structure of an underwater robot power system according to claim 1, characterized in that: The independent shaft sleeve is made of ceramic composite material or high-temperature alloy material.

4. The efficient heat dissipation sealing and stress dispersion structure of an underwater robot power system according to claim 1, characterized in that: The contact portion between the aluminum alloy motor bracket and the inner wall of the core shell is provided with an uneven structure for increasing the heat conduction area.

5. The efficient heat dissipation sealing and stress dispersion structure of an underwater robot power system according to claim 1, characterized in that: The core shell is made of a metal material with high thermal conductivity, such as an aluminum alloy or a copper alloy.

6. The high-efficiency heat dissipation sealing and stress dispersion structure of an underwater robot power system according to claim 1, characterized in that: The inner diameter of the independent sleeve is larger than the outer diameter of the motor shaft, forming a certain radial gap, which structurally allows the motor shaft to perform slight radial and angular movements inside the sleeve.

7. The efficient heat dissipation sealing and stress dispersion structure of an underwater robot power system according to claim 1, characterized in that: The heat-conducting material is heat-conducting silica gel.

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