Heat conduction shell for underwater servo motor

Abstract

The invention belongs to the technical field of servo motors, and discloses a heat conduction shell for an underwater servo motor, the heat conduction shell comprises a motor shell, the bottom of the motor shell is provided with an extrusion sealing assembly, the extrusion sealing assembly comprises an induction cover, the inner side of the induction cover is provided with a limiting pipe, and the bottom of the limiting pipe is provided with a rubber cover. According to the deep water sealing device, through cooperation of the extrusion sealing assembly, the waterproof aviation plug and other structures, pushing force can be provided through the water pressure of deep water, then the pressure of the sealing structure is increased through the pushing force, and the sealing performance is improved; the sealing performance can be changed in a self-adaptive mode according to the installation depth by extruding the sealing assembly, adjustment is conducted through water pressure, the sealing performance is further improved through pressurization, and meanwhile the problem that the service life is shortened due to the fact that the sealing structure is in high pressure for a long time is solved.

Description

Technical Field

[0001] This invention belongs to the field of servo motor technology, specifically a heat-conducting housing for an underwater servo motor. Background Technology

[0002] Underwater servo motors are the core power source for various underwater operating equipment, widely used in underwater robot propulsion, deep-sea exploration instrument actuators, and marine engineering equipment drives. Their operational stability directly determines the efficiency and safety of underwater operations. When operating in deep water, the surrounding water pressure increases exponentially with increasing diving depth. Conventional sealing structures must not only withstand the pressure of high pressure on the motor housing but also ensure the effective dissipation of internal heat. This presents a dual challenge to the motor's heat dissipation design. Although the low temperature environment of deep water can assist in heat dissipation to some extent, the high pressure will compress the flow space of the heat dissipation medium inside the motor. At the same time, the sealing layer will hinder the conduction of heat to the external water. If heat accumulates for a long time, it will cause the motor winding temperature to rise, which will not only reduce the control accuracy and response speed of the servo motor but may also cause failures such as insulation aging and magnet demagnetization.

[0003] For example, the invention disclosed in CN117937826A discloses a highly waterproof motor housing. Through the inclusion of a seepage detection and drainage component, if the sealing and waterproofing functions of the motor housing are defective and water seeps into the housing, the component will detect this phenomenon and alert relevant personnel via a warning light. This allows personnel to promptly identify and address the issue, preventing damage to the motor components inside the housing from water immersion. Furthermore, the seepage detection and drainage component also has a drainage function; even if personnel fail to detect and address the issue immediately, the motor components will not be submerged for a short period, significantly improving the waterproofness of the motor housing. Additionally, the inclusion of an air-filled seepage-blocking component allows the seepage detection and drainage component to detect water seepage and then prevent further penetration into the main housing, thereby further enhancing the waterproofness of the motor housing.

[0004] In existing technologies, water leakage can be detected by setting up sensors, which can effectively and promptly remind staff to carry out maintenance. However, the existing structure does not directly improve the sealing performance of the device, and the sealing strength cannot be adjusted according to the installation depth. This causes the sealing structure of the inner wall to be under high-intensity compression for a long time, which can easily accelerate aging and shorten its service life. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a heat-conducting housing for an underwater servo motor, which solves the problem that the existing structure does not directly improve the sealing performance of the device, and the sealing strength cannot be adjusted according to the installation depth, resulting in the inner wall sealing structure being under high-intensity compression for a long time, which easily accelerates aging and shortens the service life.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat-conducting housing for an underwater servo motor, comprising a motor housing, wherein a compression sealing assembly is provided at the bottom of the motor housing; The compression sealing assembly includes a sensing cover, a limiting tube installed on the inner side of the sensing cover, and a rubber cover installed at the bottom of the limiting tube. A fixing ring is provided at the bottom of the inner side of the rubber cover. Several sets of connecting rods are welded and installed on the top of the fixing ring. A movable disc is installed on the top of the connecting rods. A compression sealing ring is movably arranged on the inner side of the limiting tube. The compression sealing ring and the movable disc are elastically connected by a compression spring. A piston ring is slidably arranged on the inner side of the sensing cover. Several sets of welding rods are installed at the bottom of the piston ring. A compression disc is installed at the end of the welding rod away from the piston ring, and the compression disc is located below the rubber cover.

[0007] Preferably, the piston ring has a plurality of combined sealing rings arranged on its inner and outer sides. The combined sealing rings are slidably disposed on the outer side of the limiting tube and the inner side of the sensing cover. The top of the piston ring and the top of the inner side of the sensing cover are elastically connected by a return spring.

[0008] Preferably, the bottom of the limiting tube is bolted to a splicing frame, and the movable disc is slidably disposed inside the splicing frame.

[0009] Preferably, a splicing cover is spliced ​​and installed at the bottom of the sensing cover, and a number of splicing screws are provided through the bottom of the splicing cover. The upper ends of the splicing screws are assembled at the bottom of the sensing cover. A combination ring is installed at the bottom of the limiting tube by bolts. A filter screen is installed at the bottom of the sensing cover.

[0010] Preferably, the rubber cover is assembled between the combined ring and the limiting tube, the top of the sensing cover is equipped with a splicing ring, and the splicing ring is installed on the outer side of the lower end of the motor housing by bolts. Several sets of sealing rings are embedded in the top of the sensing cover, and the sealing rings are pressed and disposed at the bottom of the motor housing.

[0011] Preferably, a drive shaft is fixedly installed at the output end of the motor housing, and several sets of heat dissipation fins are uniformly welded on the outer side of the motor housing. Guide grooves are opened on the front and back sides of the inner side of the heat dissipation fins. A waterproof aviation plug is assembled and installed at the bottom of the motor housing, and the waterproof aviation plug is located on top of the compression sealing ring.

[0012] Preferably, a linked heat dissipation component is provided at the top edge of the sensing cover; The linkage heat dissipation assembly includes several sets of limiting sleeves. The limiting sleeves are welded and installed on the outer side of the splicing ring. Sealed bearings are fixedly installed on the outer side of the upper and lower ends of the limiting sleeves, and a rotating sleeve is rotatably installed on the inner side of the sealed bearings. A drive screw is rotatably installed on the inner side of the lower end of the rotating sleeve. The drive screw is welded and installed on the top of the piston ring.

[0013] Preferably, a transmission screw is rotatably provided on the inner side of the upper end of the rotating sleeve, and an adjustment plate is installed on the top of the transmission screw. Several sets of limiting plates are installed on the upper side of the adjustment plate away from the motor housing. A drive plate is rotatably provided on the inner side of two sets of limiting plates, and a combined shaft is rotatably provided on the end of the drive plate away from the limiting plate.

[0014] Preferably, the linkage heat dissipation assembly includes several sets of movable fins, the movable fins are movably disposed on the inner side of the heat dissipation fin plate, and the combination shaft is rotatably disposed on the inner side of the movable fins.

[0015] Preferably, the front and back of the movable fin are equipped with a number of sliding posts, and the sliding posts are slidably disposed inside the guide groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes the combined structure of a compression sealing assembly and a waterproof connector to leverage the water pressure of deep water to provide propulsion. This propulsion further increases the pressure on the sealing structure, enhancing its sealing performance. When the device is submerged in deep water, the water pressure passes through the filter and enters the sensor housing. First, the water pressure envelops the surface of the rubber cover, applying pressure to ensure it adheres tightly to the inner structure and increasing pressure on the waterproof connector wires. Second, the water pressure pushes the piston ring towards the motor housing. During this movement, the welding rod drives the compression plate to move synchronously. Upon contact with the rubber cover, the compression plate pushes the fixed ring, connecting rod, and movable plate to apply pressure to the compression spring. This, combined with the compression spring, increases the pressure on the compression sealing ring. The step inside the limiting tube further enhances the sealing performance through pressure amplification. The compression sealing assembly adaptively adjusts the sealing performance according to the installation depth, utilizing water pressure for regulation and pressure amplification to further improve sealing. This also avoids the problem of the sealing structure being under high pressure for extended periods, which could shorten its lifespan.

[0017] This invention, through the coordinated arrangement of a linkage heat dissipation component and a compression sealing component, facilitates linkage adjustment based on the movement of the piston ring. The heat dissipation structure can be deployed by pushing, increasing the heat dissipation area and further improving the heat dissipation effect. As the piston disc rises, it pushes the drive screw upward. The drive screw has a large thread pitch, and during the pushing process, the screw controls the rotating sleeve to rotate along the inner side of the sealed bearing. During the rotation, the screw drives the transmission screw to move upward, pushing the connecting plate to rise. The drive plate then controls each set of movable fins to slide outward along the guide groove. After outward deployment, the heat dissipation area is increased, and the deployment also increases the detour for water flow, further improving the heat dissipation efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the extrusion sealing assembly of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the linkage heat dissipation component structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point C; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point D; Figure 8 This is a schematic diagram of the motor housing structure of the present invention.

[0019] In the diagram: 100, motor housing; 101, drive shaft; 102, heat dissipation fins; 103, guide groove; 104, waterproof aviation connector; 001. Extrusion sealing assembly; 200. Sensor cover; 201. Splicing ring; 202. Sealing ring; 203. Splicing cover; 204. Splicing screw; 205. Limiting tube; 206. Combination ring; 207. Filter screen; 300. Piston ring; 301. Return spring; 302. Welding rod; 303. Extrusion disc; 304. Combined sealing ring; 400. Compression sealing ring; 401. Splicing frame; 402. Movable plate; 403. Compression spring; 404. Connecting rod; 405. Fixing ring; 406. Rubber cover; 002. Linked heat dissipation assembly; 500. Movable fins; 501. Limiting sleeve; 502. Sealed bearing; 503. Rotating sleeve; 504. Drive screw; 505. Transmission screw; 506. Adjusting plate; 507. Limiting plate; 508. Drive plate; 509. Combined shaft; 510. Sliding column. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 scope of protection of the present invention.

[0021] like Figures 1 to 8 As shown, the present invention provides a heat-conducting housing for an underwater servo motor, including a motor housing 100, and a compression sealing assembly 001 is provided at the bottom of the motor housing 100; The compression sealing assembly 001 includes a sensing cover 200. A limiting tube 205 is installed inside the sensing cover 200, and a rubber cover 406 is installed at the bottom of the limiting tube 205. A fixing ring 405 is provided at the bottom of the inner side of the rubber cover 406. Several sets of connecting rods 404 are welded to the top of the fixing ring 405. A movable disc 402 is installed at the top of the connecting rods 404. A compression sealing ring 400 is movably arranged inside the limiting tube 205. The compression sealing ring 400 and the movable disc 402 are elastically connected by a compression spring 403. A piston ring 300 is slidably arranged inside the sensing cover 200, and several sets of welding rods 302 are installed at the bottom of the piston ring 300. A compression disc 303 is installed at the end of the welding rod 302 away from the piston ring 300, and the compression disc 303 is located below the rubber cover 406.

[0022] The above solution is as follows: The motor housing 100 serves as a protective structure for the motor and provides an installation position for the internal structure. The sensing cover 200 provides a sensing cavity and restricts and guides the internal piston ring 300, ensuring the stability of the piston ring 300's sliding. The limiting tube 205 provides installation space for the central waterproof aviation connector 104 and forms another sealing area. The pressure-bearing rubber cover 406, in conjunction with the inner limiting tube 205 and the compression structure, increases the sealing performance. The fixing ring 405 is fitted onto the outside of the waterproof aviation connector 104's wiring, assisting in sliding adjustment. The connecting rod 404 connects the movable disc 402 to the fixing ring 405. After connection, the movable disc 402 pushes the fixing ring 405... When the fixed ring 405 is in place, it can drive the movable plate 402 to slide along the inner side of the splicing frame 401 and the limiting tube 205 to apply pressure. The pressure on the compression sealing ring 400 can be increased by the compression spring 403. The sealing performance is further increased by deforming the compression sealing ring 400. The water depth of 110m corresponds to a water pressure of about 1.01MPa, and the thrust acting on the piston ring 300 is 5090N. The return spring 301 has a preload of 110N and a stiffness of 20N / mm, and the maximum compression force does not exceed 511N. The compression spring 403 has a basic preload of 150N and a stiffness of 30N / mm. At this depth, the total compression force is about 600N. This force can allow the sealing ring to deform appropriately and seal without aging. At the same time, the linkage heat dissipation component 002 moves with the piston ring 300 to expand the fins and improve heat dissipation.

[0023] like Figure 2 - Figure 4 As shown, the piston ring 300 has several sets of combined sealing rings 304 arranged on its inner and outer sides. The combined sealing rings 304 are slidably arranged on the outer side of the limiting tube 205 and the inner side of the sensing cover 200. The top of the piston ring 300 and the top of the inner side of the sensing cover 200 are elastically connected by a return spring 301.

[0024] The bottom of the limiting tube 205 is bolted to a splicing frame 401, and the movable plate 402 is slidably disposed inside the splicing frame 401.

[0025] A splicing cover 203 is spliced ​​and installed at the bottom of the sensing cover 200. Several sets of splicing screws 204 are installed through the bottom of the splicing cover 203. The upper ends of the splicing screws 204 are assembled at the bottom of the sensing cover 200. A combination ring 206 is installed at the bottom of the limiting tube 205 by bolts. A filter screen 207 is installed at the bottom of the sensing cover 200.

[0026] The rubber cover 406 is assembled between the combination ring 206 and the limiting tube 205. The top of the sensing cover 200 is equipped with a splicing ring 201, and the splicing ring 201 is installed on the outer side of the lower end of the motor housing 100 by bolts. Several sets of sealing rings 202 are embedded in the top of the sensing cover 200, and the sealing rings 202 are pressed against the bottom of the motor housing 100.

[0027] By adopting the above solution: the combined sealing ring 304, by being set on the side of the piston ring 300, can effectively increase the sealing performance of the piston ring 300 sliding, ensuring that the water pressure can push the piston ring 300 to slide and adjust along the inner side of the sensing cover 200. The return spring 301 can push the piston ring 300 outward when there is no water pressure, thereby reducing the pressure and reducing the deformation of the sealing ring 400. The splicing ring 201 can set the sensing cover 200 on the outer side of the lower end of the motor housing 100. The assembly is convenient for disassembly through the bolt structure, and the sealing ring 202 can effectively ensure the sealing performance of the structure.

[0028] like Figure 8 As shown, a drive shaft 101 is fixedly installed at the output end of the motor housing 100, and several sets of heat dissipation fins 102 are uniformly welded on the outer side of the motor housing 100. Guide grooves 103 are provided on the front and back sides of the inner side of the heat dissipation fins 102. A waterproof aviation plug 104 is assembled and installed at the bottom of the motor housing 100, and the waterproof aviation plug 104 is located on the top of the compression sealing ring 400.

[0029] A linkage heat dissipation component 002 is provided on the top edge of the sensor cover 200; The linkage heat dissipation assembly 002 includes several sets of limiting sleeves 501. The limiting sleeves 501 are welded and installed on the outer side of the splicing ring 201. Sealed bearings 502 are fixedly installed on the outer side of the upper and lower ends of the limiting sleeves 501. A rotating sleeve 503 is rotatably arranged on the inner side of the sealed bearings 502. A drive screw 504 is rotatably arranged on the inner side of the lower end of the rotating sleeve 503. The drive screw 504 is welded and installed on the top of the piston ring 300.

[0030] A transmission screw 505 is rotatably mounted on the inner side of the upper end of the rotating sleeve 503, and an adjusting plate 506 is mounted on the top of the transmission screw 505. Several sets of limiting plates 507 are mounted on the side of the upper end of the adjusting plate 506 away from the motor housing 100. A drive plate 508 is rotatably mounted on the inner side of the two sets of limiting plates 507, and a combined shaft 509 is rotatably mounted on the end of the drive plate 508 away from the limiting plate 507.

[0031] The linkage heat dissipation assembly 002 includes several sets of movable fins 500, which are movably disposed on the inner side of the heat dissipation fin plate 102, and the combination shaft 509 is rotatably disposed on the inner side of the movable fins 500.

[0032] Several sets of sliding posts 510 are installed on the front and back of the movable fin 500, and the sliding posts 510 are slidably disposed inside the guide groove 103.

[0033] Using the above solution: the drive shaft 101 provides driving force through the cooperation of the electronics and rotor inside the motor housing 100, and heat is conducted through the heat dissipation fins 102 to achieve heat dissipation. The inner guide groove 103 restricts the sliding column 510 on the side of the movable fin 500 to ensure sliding stability. The waterproof connector 104 can be easily installed and can ensure a certain degree of waterproof effect. It can be welded to the splicing ring 201 through the limiting sleeve 501, and the sealing is guaranteed after welding. With the sealing bearing 502, the inner rotating sleeve 503 can be assisted while ensuring sealing. The rotating sleeve 503 can be adjusted by rotating. The drive screw 504 is welded to the piston ring 300. During the movement of the piston ring 300, it will push the rotating sleeve 503 to rotate along the inner side of the sealed bearing 502. Then, the threaded structure drives the transmission screw 505 to lift. Adjustment can be made during the lifting process. The adjustment plate 506 can be used for lifting and auxiliary adjustment. The limiting plate 507 can restrict the inner drive plate 508. During the pushing process, the movable fin 500 can be adjusted to move outward and unfold through the drive plate 508. The sliding column 510 can effectively ensure the sliding restriction inside the guide groove 103.

[0034] The working principle and usage of this invention are as follows: When the motor housing 100 is placed underwater, the water flow squeezes the rubber cover 406 to seal the inner structure. Simultaneously, the water pressure pushes the piston ring 300 to slide along the inner side of the sensing cover 200. During this sliding process, the piston ring 300 contacts the fixed ring 405 and pushes the movable disc 402 via the connecting rod 404. The movable disc 402, in conjunction with the compression spring 403, applies pressure to the sealing ring 400, causing it to deform and increase the sealing performance. Simultaneously, the movement of the piston ring 300 pushes the edge... Each set of drive screws 504 moves upward. During the movement, the rotating sleeve 503 is driven to rotate along the inner side of the sealed bearing 502 through the threaded structure. During the rotation, the inner transmission screw 505 is pushed to rise synchronously. During the rise, each set of adjustment plates 506, together with the limit plate 507, can adjust the position of the drive plate 508. During the rise of the drive plate 508, the movable fin 500 is squeezed and laterally slid along the heat dissipation fin plate 102. The sliding column 510 slides along the inner side of the guide groove 103. During the sliding, the movable fin 500 is adjusted to stabilize it.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-conducting housing for an underwater servo motor, comprising a motor housing (100), characterized in that: The bottom of the motor housing (100) is provided with a compression sealing assembly (001). The compression sealing assembly (001) includes a sensing cover (200), a limiting tube (205) is installed on the inner side of the sensing cover (200), and a rubber cover (406) is installed at the bottom of the limiting tube (205). A fixing ring (405) is provided at the bottom of the inner side of the rubber cover (406). Several sets of connecting rods (404) are welded to the top of the fixing ring (405). A movable disc (402) is installed at the top of the connecting rods (404). The inner side of the limiting tube (205)... A compression sealing ring (400) is provided on the side. The compression sealing ring (400) and the movable disc (402) are elastically connected by a compression spring (403). A piston ring (300) is slidably provided on the inner side of the sensing cover (200). Several sets of welding rods (302) are installed at the bottom of the piston ring (300). A compression disc (303) is installed at the end of the welding rod (302) away from the piston ring (300). The compression disc (303) is located below the rubber cover (406).

2. The heat-conducting housing for an underwater servo motor according to claim 1, characterized in that: The piston ring (300) has several sets of combined sealing rings (304) arranged on its inner and outer sides. The combined sealing rings (304) are slidably arranged on the outer side of the limiting tube (205) and the inner side of the sensing cover (200). The top of the piston ring (300) and the top of the inner side of the sensing cover (200) are elastically connected by a return spring (301).

3. The heat-conducting housing for an underwater servo motor according to claim 1, characterized in that: The bottom of the limiting tube (205) is bolted to a splicing frame (401), and the movable plate (402) is slidably disposed inside the splicing frame (401).

4. The heat-conducting housing for an underwater servo motor according to claim 1, characterized in that: The bottom of the sensing cover (200) is spliced ​​with a splicing cover (203), and a number of splicing screws (204) are provided through the bottom of the splicing cover (203). The upper ends of the splicing screws (204) are combined and set at the bottom of the sensing cover (200). The bottom of the limiting tube (205) is bolted with a combination ring (206), and a filter screen (207) is installed at the bottom of the sensing cover (200).

5. The heat-conducting housing for an underwater servo motor according to claim 4, characterized in that: The rubber cover (406) is assembled between the combination ring (206) and the limiting tube (205). The top of the sensing cover (200) is equipped with a splicing ring (201), and the splicing ring (201) is installed on the outer side of the lower end of the motor housing (100) by bolts. Several sets of sealing rings (202) are embedded in the top of the sensing cover (200), and the sealing rings (202) are pressed and disposed at the bottom of the motor housing (100).

6. The heat-conducting housing for an underwater servo motor according to claim 1, characterized in that: The output end of the motor housing (100) is fixedly installed with a drive shaft (101), and several sets of heat dissipation fins (102) are uniformly welded on the outer side of the motor housing (100). Guide grooves (103) are provided on the front and back sides of the inner side of the heat dissipation fins (102). A waterproof aviation plug (104) is assembled and installed at the bottom of the motor housing (100), and the waterproof aviation plug (104) is located on top of the compression sealing ring (400).

7. The heat-conducting housing for an underwater servo motor according to claim 1, characterized in that: A linkage heat dissipation component (002) is provided on the top edge of the sensor cover (200). The linkage heat dissipation assembly (002) includes several sets of limiting sleeves (501). The limiting sleeves (501) are welded and installed on the outside of the splicing ring (201). Sealed bearings (502) are fixedly installed on the outer side of the upper and lower ends of the limiting sleeves (501). A rotating sleeve (503) is rotatably provided on the inner side of the sealed bearings (502). A drive screw (504) is rotatably provided on the inner side of the lower end of the rotating sleeve (503). The drive screw (504) is welded and installed on the top of the piston ring (300).

8. The heat-conducting housing for an underwater servo motor according to claim 7, characterized in that: A transmission screw (505) is rotatably provided on the inner side of the upper end of the rotating sleeve (503), and an adjusting plate (506) is installed on the top of the transmission screw (505). Several sets of limiting plates (507) are installed on the side of the upper end of the adjusting plate (506) away from the motor housing (100). A drive plate (508) is rotatably provided on the inner side of the two sets of limiting plates (507), and a combined shaft (509) is rotatably provided on the end of the drive plate (508) away from the limiting plate (507).

9. The heat-conducting housing for an underwater servo motor according to claim 8, characterized in that: The linkage heat dissipation assembly (002) includes several sets of movable fins (500), which are movably disposed on the inner side of the heat dissipation fin plate (102), and the combination shaft (509) is rotatably disposed on the inner side of the movable fins (500).

10. The heat-conducting housing for an underwater servo motor according to claim 9, characterized in that: The movable fin (500) has several sets of sliding posts (510) installed on its front and back sides, and the sliding posts (510) are slidably disposed inside the guide groove (103).

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