A ship hatch cover vector magnetic resistance motor drive and electric control integrated device

Abstract

This invention provides an integrated vector reluctance motor drive and control device for ship hatch covers, relating to the field of motor technology. It includes a motor body, a reducer, an electromagnetic brake, a controller, and a rear cover. By installing a reducer and an electromagnetic brake at both ends of the motor body, and then enclosing the electromagnetic brake inside the rear cover, and integrating the controller within the rear cover, the integrated structure formed by the motor body, reducer, electromagnetic brake, controller, and rear cover is more compact. Furthermore, the reducer exhibits better sealing at both ends, preventing poor contact and corrosion problems caused by marine salt spray environments when applied to ship hatches.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to an integrated device for driving and controlling a vector reluctance motor for a ship hatch cover. Background Technology

[0002] Existing ship hatch cover drives mostly use hydraulic motors, which have many technical drawbacks. Specifically, the hydraulic components are precision-sensitive and have many vulnerable parts; troubleshooting is complex, requiring high technical skills and resulting in high maintenance costs; performance degrades in low-temperature environments, necessitating the addition of oil heating devices; loose or damaged pipe joints, damaged seals, and high-pressure system design can all lead to hydraulic oil leaks and environmental pollution; energy consumption is high and energy efficiency is limited; strict control of oil contamination is required, as water or impurities in the hydraulic oil can cause valve core jamming, pump wear, or even system failure.

[0003] A vector reluctance motor (VRM) is a reluctance rotary motor that operates based on the principle of optimal reluctance. It utilizes multi-phase vector control technology to precisely regulate the stator winding current, achieving high-precision control of operating parameters such as torque and speed. The motor employs magnetic field modulation and variable flux technology to generate reluctance torque by varying the stator and rotor reluctance, and harmonic injection technology reduces torque ripple. With no rotor windings or permanent magnets, it features a simple structure, high efficiency, wide speed range, high reliability, and high temperature resistance. Through a drive system, it can achieve wide-range smooth speed regulation, arbitrary torque, and high-precision position control, making it suitable for driving ship hatch covers.

[0004] In practical applications, the applicant found that traditional vector reluctance motors have poor structural integration. The motor body, reducer, brake, and controller are usually arranged in a decentralized manner. The motor controller needs to be installed separately in the control cabinet, and the brake is externally mounted on the motor shaft. This results in a large overall space occupation, complicated cable connections, and difficulty in installation in the limited space of the ship deck. In addition, many connectors and connecting cables are prone to poor contact and corrosion in the marine salt spray environment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated device for driving and controlling a vector reluctance motor for a ship hatch cover, which solves the problem of defects in the application of vector reluctance motors in ship systems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An integrated device for driving and controlling a vector reluctance motor for a ship hatch cover includes: The motor body has a speed reducer connected to its first axial end and an electromagnetic brake connected to its second axial end. The housing of the speed reducer seals and covers the first end of the motor body. The rear cover is fixedly installed at the second end of the motor body, sealing and covering the electromagnetic brake and the second end of the motor body. The controller is also integrated inside the rear cover.

[0007] Preferably, the motor body includes: The housing has an opening at its second end and a back cover is fixedly installed thereon. A stator core is fixedly connected to the inner wall of the housing. A shaft is rotatably arranged inside the housing. A rotor core that mates with the stator core is fixedly connected to the outer side of the shaft. The rear cover is fixedly installed at the end of the rear cover away from the housing.

[0008] Preferably, a lifting ring is fixedly installed on the top of the housing and on the outside of the reducer.

[0009] Preferably, the rotor core is a pure laminated core, and the outer side of the pure laminated core is provided with a toothed structure; The stator core includes stator laminations, and a winding portion is provided on the inner side of the stator laminations, with a magnetic coil provided on the winding portion.

[0010] Preferably, the rear cover extends toward the rear cover from one end of the rear cover and is located between the outer side of the electromagnetic brake and the inner side of the controller to form a cooling separation ring.

[0011] Preferably, the cooling separator ring is a water-cooled circulating cooling structure.

[0012] Preferably, one end of the cooling separator ring forms a sealing fit with the end of the rear cover.

[0013] Preferably, the main body of the electromagnetic brake is fixedly installed with the rear cover, and the brake disc of the electromagnetic brake is fixedly installed with the shaft.

[0014] Preferably, the reducer is a planetary gear reducer, with the central gear as input and the planet carrier as output.

[0015] This invention provides an integrated device for driving and controlling a vector reluctance motor for a ship hatch cover. It offers the following advantages: This invention, by installing a speed reducer and an electromagnetic brake at both ends of the motor body and installing a rear cover to house the electromagnetic brake inside, and integrating the controller inside the rear cover, makes the integrated structure of the motor body, speed reducer, electromagnetic brake, controller and rear cover more compact. Moreover, the speed reducer has better sealing at both ends, which is suitable for use at ship hatches and avoids problems of poor contact and corrosion caused by the marine salt spray environment.

[0016] This invention establishes a cooling separation ring extending from the end of the rear cover away from the rear cover and located between the outer side of the electromagnetic brake and the inner side of the controller, towards the rear cover. One purpose of this cooling separation ring design is to isolate the electromagnetic brake from the controller. When the electromagnetic brake is working, its brake disc rotates with the shaft, which may create a dusty environment inside the rear cover, which is not conducive to the long-term stable operation of the controller. Moreover, both the electromagnetic brake and the controller generate heat during operation, which can affect each other and reduce the lifespan of the controller. Isolating the electromagnetic brake from the controller can increase the lifespan of the controller. The second purpose is to cool the area where the electromagnetic brake and the controller are located; this can also be understood as cooling the area where the controller is located to isolate the electromagnetic brake from affecting the controller. Attached Figure Description

[0017] Figure 1 This is a perspective view of an integrated vector reluctance motor drive and electronic control device for a ship hatch cover proposed in this invention. Figure 2 This is a cross-sectional view of a vector reluctance motor drive and integrated electronic control device for a ship hatch cover proposed in this invention. Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is a three-dimensional schematic diagram of the rear cover of a ship hatch cover vector reluctance motor drive and electronic control integrated device in Embodiment 2. Figure 5 This is a three-dimensional schematic diagram of the ring frame and semiconductor refrigeration unit of a vector reluctance motor drive and electronic control integrated device for a ship hatch cover, as shown in Embodiment 2. Figure 6 This is a three-dimensional schematic diagram of another rear cover of a ship hatch cover vector reluctance motor drive and electronic control integrated device in Embodiment 2. Figure 7 This is a schematic diagram showing the distribution of the stator core and rotor core of a vector reluctance motor drive and integrated electronic control device for a ship hatch cover proposed in Example 1. Figure 8 This is a schematic diagram illustrating the working principle of a vector reluctance motor drive and integrated electronic control device for a ship hatch cover proposed in this invention. Figure 9 This is a schematic diagram of the controller interface of a vector reluctance motor drive and integrated electronic control device for ship hatch covers proposed in this invention.

[0018] The components include: 1. Reducer; 2. Lifting ring; 3. First bearing; 4. Shaft; 5. Stator core; 6. Rotor core; 7. Second bearing; 8. First washer; 9. First screw; 10. First sealing ring; 11. Electromagnetic brake; 12. Rear cover; 13. Pin; 14. Second screw; 15. Rear cover; 16. Third screw; 17. Second washer; 18. Second sealing ring; 19. Housing; 20. Third sealing ring; 21. Fourth screw; 22. Controller; 23. Refrigeration partition ring; 231. Molding area; 232. Heat-conducting component; 233. Refrigeration ring; 233a. Annular frame; 233b. Semiconductor refrigeration unit; 234. Elastic pad; 235. Heat-conducting sheet; 236. Annular disc; 237. Water inlet and water outlet. Detailed Implementation

[0019] 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.

[0020] Example 1 like Figures 1-9 As shown, this embodiment of the invention provides a vector reluctance motor drive and electronic control integrated device for ship hatch cover, which is used for the opening and closing drive of ship hatch cover (for example, the vector reluctance motor drives the gear-rack mechanism, thereby driving the linear opening and closing action of the ship hatch cover). Specifically, it includes a motor body, a reducer 1, an electromagnetic brake 11, a controller 22, and a rear cover 12.

[0021] A reducer 1 is connected to the first axial end of the motor body. The input end of the reducer 1 is in transmission engagement with the output end of the motor body. For example, a splined fit structure is adopted, with a splined hole opened at the top of the shaft 4 of the motor body, and the input shaft of the reducer 1 is inserted into the splined hole. This allows the shaft 4 of the reducer 1 to directly drive the input shaft of the reducer 1, and the output shaft of the reducer 1 is used as the drive for opening and closing the hatch cover of the ship. The reducer 1 plays the role of deceleration and torque amplification. An electromagnetic brake 11 is connected to the second axial end of the motor body. The electromagnetic brake 11 is preferably a power-off brake. The main body of the electromagnetic brake 11 is connected to the rear cover 15 of the motor body. The electromagnetic brake 11 is fixedly installed with its brake disc on the shaft 4 of the motor body. When the user issues a stop command, the electromagnetic brake 11 quickly de-energizes and brakes the shaft 4 of the motor body, thereby shortening the inertial rotation of the shaft 4 (the angle by which the shaft 4 continues to rotate after the motor body is de-energized due to its own inertia and that of other components that are connected to / fixed with the shaft 4). The housing of the reducer 1 seals the first end of the motor body. For example, the bottom of the housing of the reducer 1 is fastened to the first end of the motor body, and a third sealing ring 20 (e.g., with an outer diameter of 370 mm) is provided at the contact point between the two. The sealing ring has an inner diameter of 364 mm and a wire diameter of 3 mm. Both are designed with flange structures and are fixedly installed using the fourth screw 21 (M8x30 socket head cap screw), thus giving the first end of the motor body a good seal. The rear cover 12 is fixedly installed on the second end of the motor body. For example, the top of the rear cover 12 is snapped into the second end of the motor body. The contact part of the two is provided with a first sealing ring 10, and both are designed with flange structures. They are fixedly installed using a second washer 17 and a third screw 16. The rear cover 12 seals the electromagnetic brake 11 and the second end of the motor body, thus giving the second end of the motor body a good seal. The rear cover 12 also provides a sealed installation space for the controller 22. The controller 22 is integrated inside the rear cover 12. In this way, the integrated structure formed by the motor body, reducer 1, electromagnetic brake 11, controller 22 and rear cover 12 is more compact. Moreover, the sealing of both ends of the reducer 1 is better. When applied to the hatch of a ship, it avoids the problems of poor contact and corrosion caused by the marine salt spray environment.

[0022] like Figure 9 As shown, the user terminal (e.g., wireless / wired control terminal, mobile phone, console, etc.) sends control signals to the controller 22, which generates drive signals according to a predetermined algorithm / program to power the vector reluctance motor. The vector reluctance motor rotates to open the hatch.

[0023] In one embodiment, the motor body includes: a housing 19, a stator core 5, a shaft 4, a rotor core 6, and a rear cover 15.

[0024] like Figure 2 As shown, the housing 19 is a metal shell with an open bottom and an end plate at the top. A rear cover 15 is fixedly installed at the bottom of the housing 19. For example, a second sealing ring 18 is provided at the connection between the housing 19 and the rear cover 15, and the housing is fixedly installed using a structure consisting of a first washer 8 and a first screw 9. A stator core 5 is fixedly connected to the inner wall of the housing 19. The stator core 5 is used to generate a controllable driving magnetic field. A shaft 4 is rotatably installed inside the housing 19. The top end of the shaft 4 is connected to the top end of the housing 19 through a first bearing 3, and the bottom end of the shaft 4 is connected to the rear cover 15 through a second bearing 7. A rotor core 6 that cooperates with the stator core 5 is fixedly connected to the outer side of the shaft 4. The controllable magnetic field generated by the stator core 5 drives the rotor core 6 (a structure without rotor windings or permanent magnets), thereby driving the shaft 4 to rotate. The rear cover 12 is fixedly installed at the end of the rear cover 15 away from the housing 19 and is used to cover the electromagnetic brake 11.

[0025] It is understood that the vector reluctance motor uses magnetic field modulation and variable flux technology to change the reluctance of the stator and rotor to generate reluctance torque; that is, under the control of the controller 22, the electromagnetic coil at the stator core 5 is energized to drive the rotor core 6, thereby driving the shaft 4 to rotate (see the specific drive control method disclosed in the invention patent application publication number: CN 120150397 A, invention title: a vector reluctance motor and its control method).

[0026] In one embodiment, a lifting ring 2 is fixedly installed on the top of the housing 19 and on the outside of the reducer 1; for example, several lifting rings 2 are provided on the top of the housing 19 to facilitate lifting and transportation.

[0027] One method is to open a threaded hole on the top of the housing 19, and thread the lifting eye 2 into the threaded hole; during actual installation, the lifting eye 2 can be removed, and a fixing screw can be installed in the threaded hole to install the vector reluctance motor.

[0028] In one embodiment, the reducer 1 is a planetary gear reducer with a central gear as input and a planet carrier as output. This planetary gear reducer has stable transmission and is suitable for high torque applications.

[0029] In one embodiment, the rotor core 6 is a pure laminated core, which is formed by stacking multiple silicon steel sheets axially with a stacking factor of not less than 0.95. The silicon steel sheets are insulated from each other by an insulating coating to reduce eddy current losses. The outer side of the pure laminated core is provided with a toothed structure, which forms a protruding part and a recessed part. Utilizing the principle of optimal magnetic reluctance, magnetic flux always tends to close along the path with optimal magnetic reluctance. The recessed part is filled with air or a non-magnetic medium, which has a larger magnetic reluctance. Therefore, the magnetic flux tends to form a loop through the protruding part, thereby generating torque on the rotor core 6.

[0030] The stator core 5 includes stator laminations, and a winding section is provided on the inner side of the stator laminations. A magnetic coil is provided on the winding section to generate a magnetic field, which is used to generate the force to drive the rotor core 6.

[0031] In one embodiment, the main body of the electromagnetic brake 11 is fixedly installed with the rear cover 15, and the brake disc of the electromagnetic brake 11 is fixedly installed with the shaft 4; for example, the main body of the electromagnetic brake 11 is fixedly installed with the rear cover 15 by the second screw 14, and the brake disc of the electromagnetic brake 11 is fixedly connected with the shaft 4 by the pin 13.

[0032] Example 2 like Figures 1-7 As shown, the difference between this embodiment and Embodiment 1 is that a cooling separation ring 23 is formed by extending the end of the rear cover 12 away from the rear cover 15 and located between the outer side of the electromagnetic brake 11 and the inner side of the controller 22 towards the rear cover 15. One purpose of the cooling separation ring 23 is to isolate the electromagnetic brake 11 from the controller 22. When the electromagnetic brake 11 is working, its brake disc always rotates with the shaft 4, which may create a dust environment inside the rear cover 12, which is not conducive to the long-term stable operation of the controller 22. Moreover, both the electromagnetic brake 11 and the controller 22 generate heat during operation, which will affect each other and reduce the lifespan of the controller 22. Isolating the electromagnetic brake 11 from the controller 22 can increase the lifespan of the controller 22. The second purpose is to cool down the area where the electromagnetic brake 11 and the controller 22 are located. It can also be understood as cooling down the area where the controller 22 is located to isolate the impact of the electromagnetic brake 11 on the controller 22.

[0033] In one embodiment, such as Figure 3 , Figure 6 As shown, the cooling partition ring 23 is a water-cooled circulation cooling structure, that is, the cooling partition ring 23 includes: an upwardly protruding molding area 231 integrally formed with the rear cover 12 and an annular disc 236 fixedly disposed at the bottom of the molding area 231. The bottom of the annular disc 236 is provided with a water inlet and a water outlet 237. An external liquid cooling circulation system supplies cooling water to the interior of the molding area to form a cooling circulation.

[0034] In one embodiment, such as Figure 3 , Figure 4 , Figure 5 As shown, the cooling partition ring 23 is a semiconductor cooling structure, which includes an upwardly convex molding area 231 integrally formed with the rear cover 12 and a cooling ring 233 fixedly disposed at the bottom end inside the molding area. A heat-conducting sheet 235 extending into the interior of the molding area 231 is fixedly connected to the top of the cooling ring 233. The interior of the molding area 231 is sealed and filled with a heat-conducting liquid.

[0035] The cooling ring 233 is a thermally conductive silicone encapsulation structure. Its core includes an annular skeleton 233a, on which multiple semiconductor cooling units 233b are fixedly mounted. The cold end of the semiconductor cooling unit 233b faces the molding area 231 and conducts heat to the thermally conductive liquid through the encapsulation layer. The hot end of the semiconductor cooling unit 233b faces outward and conducts heat to the outside through the encapsulation layer.

[0036] In one embodiment, one end of the cooling separator ring 23 forms a sealing fit with the end of the rear cover 15; for example, an elastic pad 234 is fixedly provided on the top of the molding area 231, and after the rear cover 12 is installed, the elastic pad 234 abuts against the bottom of the rear cover 15, thereby forming a sealing fit.

[0037] In one embodiment, a plurality of transversely penetrating heat-conducting elements 232 are provided in the molding area 231. The heat-conducting elements 232 can enhance the structural strength of part of the shell of the molding area 231 and also improve the efficiency of heat conduction.

[0038] 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 vector reluctance motor drive and electronic control integrated device for ship hatch covers, characterized in that, include: The motor body has a speed reducer (1) connected to the first end along the axial direction and an electromagnetic brake (11) connected to the second end. The housing of the speed reducer (1) seals and covers the first end of the motor body. The rear cover (12) is fixedly installed at the second end of the motor body, sealing the electromagnetic brake (11) and the second end of the motor body. The controller (22) is also integrated inside the rear cover (12).

2. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 1, characterized in that, The motor body includes: The housing (19) has an opening at the second end and a back cover (15) is fixedly installed thereon. The inner wall of the housing (19) is fixedly connected to a stator core (5). A shaft (4) is rotatably arranged inside the housing (19). A rotor core (6) that cooperates with the stator core (5) is fixedly connected to the outer side of the shaft (4). The rear cover (12) is fixedly installed at the end of the rear cover (15) away from the housing (19).

3. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 2, characterized in that: A lifting ring (2) is fixedly installed on the top of the housing (19) and on the outside of the reducer (1).

4. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 2, characterized in that: The rotor core (6) is a pure laminated core, and the outer side of the pure laminated core is provided with a toothed structure; The stator core (5) includes stator laminations, and a winding portion is provided on the inner side of the stator laminations, with a magnetic coil provided on the winding portion.

5. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 2, characterized in that: The rear cover (12) extends toward the rear cover (15) at one end away from the rear cover (15) and between the outer side of the electromagnetic brake (11) and the inner side of the controller (22) to form a cooling separation ring (23).

6. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 5, characterized in that: The cooling separation ring (23) is a water-cooled circulating cooling structure.

7. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 5, characterized in that: One end of the cooling separator ring (23) forms a sealing fit with the end of the rear cover (15).

8. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 2, characterized in that: The main body of the electromagnetic brake (11) is fixedly installed with the rear cover (15), and the brake disc of the electromagnetic brake (11) is fixedly installed with the shaft (4).

9. The integrated vector reluctance motor drive and electronic control device for ship hatch covers according to claim 1, characterized in that: The reducer (1) is a planetary gear reducer with the central gear as input and the planet carrier as output.

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