Dual-redundancy servo motor

Abstract

The invention relates to the technical field of motors, and particularly discloses a dual-redundancy servo motor which comprises a shell, and the interior of the shell is hollow. The driving mechanism comprises a permanent magnet alternating current servo motor and a transmission shaft, the permanent magnet alternating current servo motor comprises a stator and a rotor, and the stator drives the transmission shaft to rotate; the two brushless resolver engines are arranged adjacent to the transmission shaft, the two brushless resolver engines are both provided with resolver parts, and the resolver parts are connected with two annular resolver parts arranged at the two ends of the interior of the shell; the heat dissipation mechanism comprises a heat dissipation annular plate, a heat dissipation spiral pipe and a peristaltic pump; the servo motor overcomes the defects that in the prior art, the temperature control of the servo motor is poor, and the utilization rate of the internal space is low.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to a dual-redundancy servo motor. Background Art

[0002] As a high-performance motor, servo motors have the characteristics of precise control, high torque, and high speed, and are widely used in the aerospace field. They play an irreplaceable role in space exploration, satellite positioning, etc., and play an important role in human exploration of the universe and promoting scientific and technological progress.

[0003] In the prior art, servo motors usually have the defect of insufficient heat dissipation. Excessively high temperature can easily affect the performance of the servo motor. In addition, when a brushless rotary motor is used to detect the servo motor, a large space is occupied and the space utilization rate is low. Summary of the invention

[0004] 1. Technical issues to be resolved The problem to be solved by the present invention is to provide a dual-redundancy servo motor to overcome the defects of the servo motor in the prior art, that is, the temperature control is poor and the internal space utilization is low.

[0005] (II) Technical solution In order to solve the technical problem, the present invention provides a dual-redundancy servo motor, comprising: A shell, wherein the interior of the shell is hollow, one end of the shell is provided with a first opening, and the other end of the shell is connected to an end cover; A driving mechanism, the driving mechanism comprising a permanent magnet AC servo motor and a transmission shaft, the permanent magnet AC servo motor comprising a stator and a rotor, the stator driving the rotor to rotate to generate torque, the transmission shaft being inserted into the first opening, the transmission shaft being connected to the rotor, and the stator driving the transmission shaft to rotate; Two brushless resolver engines, the brushless resolver engines are arranged adjacent to the transmission shaft, the two brushless resolver engines both have resolver components, the two resolver components are respectively arranged at two ends of the inner wall of the housing, a ring-shaped resolver component is arranged between the two resolver components, and the two resolver components are both connected to the ring-shaped resolver component; The heat dissipation mechanism includes a heat dissipation ring plate, a heat dissipation spiral tube and a peristaltic pump, wherein the two heat dissipation ring plates are arranged on the outer surface of the shell, the two ends of the heat dissipation spiral tube are respectively connected to the two heat dissipation ring plates, the heat dissipation spiral tube is provided with heat dissipation fins, the shell is provided with a water outlet and a water inlet, the water outlet is connected to the peristaltic pump through a pipeline, the peristaltic pump is connected to one end of the heat dissipation spiral tube through a pipeline, and the other end of the heat dissipation spiral tube is connected to the water inlet.

[0006] As described above, in the dual-redundancy servo motor, optionally, a heat-conducting layer is provided between the housing and the stator, and a water flow channel is provided inside the housing.

[0007] As for the dual-redundant servo motor as mentioned above, optionally, one end of the water flow channel is connected to the water inlet, and the other end of the water flow channel is connected to the water outlet, and the water flow channel is in a multi-section bending shape.

[0008] As described above, the dual-redundant servo motor can optionally include a first bearing and a second bearing, wherein the first bearing and the second bearing are located at both ends of the rotor, and the first bearing and the second bearing are both located between the housing and the transmission shaft, and the first bearing and the second bearing support the rotation of the transmission shaft.

[0009] As mentioned above, for the double-redundant servo motor, optionally, a convex key is provided on the transmission shaft.

[0010] As mentioned above, the dual-redundancy servo motor can optionally include a control mechanism arranged outside, and the control mechanism is connected to the peristaltic pump, the brushless resolver motor and the permanent magnet AC servo motor.

[0011] As described above, the dual-redundant servo motor can optionally have a collar, the center of which is hollow, the transmission shaft passes through the center of the collar, one end of the collar is connected to the housing, and the other end of the collar is connected to the brushless rotary transformer motor.

[0012] As for the dual-redundant servo motor mentioned above, optionally, a connecting seat is provided at one end of the shell, a connecting hole is provided on the connecting seat, and a vibration damper is provided on the connecting seat.

[0013] As described above, in the double-redundant servo motor, optionally, the transmission shaft, the stator, the rotor, the collar, the first bearing and the second bearing are coaxial.

[0014] (III) Beneficial effects The present invention provides a dual-redundancy servo motor, which has the following beneficial effects: (1) The present invention detects the rotation speed and rotation position of the rotor in the driving mechanism through a brushless rotary transformer engine. Specifically, the brushless rotary transformer engine has two brushless rotary transformer engines, each of which has a rotary transformer component. The rotary transformer components are located at both ends of the housing, and a ring variable component is provided between the two rotary transformer components. Both rotary transformer components are connected in parallel with the ring variable component, thereby detecting the rotation speed and rotation position of the rotor of the driving mechanism. In the prior art, each brushless rotary transformer engine is provided with a rotary transformer component and a ring variable component that are interconnected. Through this method, the space utilization rate can be effectively improved, and the servo motor can be made smaller and more material-saving while ensuring its performance.

[0015] (2) The present invention provides a plurality of curved water flow channels inside the shell, which can expand the heat conduction area and thus improve the heat conduction efficiency. A heat dissipation mechanism is provided outside the shell, wherein a pipeline connects the two ends of the water flow channel to realize the circulation of water flow. A peristaltic pump, a heat dissipation ring plate and a heat dissipation spiral tube are provided between the pipelines. The peristaltic pump can drive the water flow in the water flow channel and the pipeline. The heat dissipation ring plate can play a fixed supporting role. The heat dissipation spiral tube is located between the two heat dissipation ring plates. The water flow is cooled by the heat dissipation spiral tube. Specifically, a heat dissipation fin plate is provided on the heat dissipation spiral tube. The heat dissipation fin plate increases the contact area between the pipeline and the air, thereby achieving a better heat dissipation effect. The water flow circulating in the heat dissipation mechanism can ensure that the temperature of the servo motor is in an appropriate state, thereby ensuring its stability during operation.

[0016] (3) The present invention provides a first bearing and a second bearing at both ends of the rotor. The first bearing and the second bearing are located between the housing and the transmission shaft. The first bearing and the second bearing can ensure that the transmission shaft can work better and more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A cross-sectional view of a double-redundant servo motor of the present invention; Figure 2 for Figure 1 The local schematic diagram of the A in the middle; Figure 3 for Figure 1 The local schematic diagram of point B in the middle; Figure 4 for Figure 1The local schematic diagram of the C in the middle; Figure 5 for Figure 1 The local schematic diagram of point D in the middle; Figure 6 A three-dimensional diagram of a heat dissipation mechanism of a double-redundant servo motor of the present invention; Figure 7 It is a front view of a heat dissipation mechanism of a double-redundant servo motor of the present invention; Figure 8 The figure is a cross-sectional view of a heat dissipation mechanism of a double-redundant servo motor according to the present invention.

[0019] The names of the components corresponding to the various figure marks in the figure are: 1. Shell; 11. First opening; 12. End cover; 13. Water flow channel; 2. Driving mechanism; 21. Servo motor; 22. Transmission shaft; 23. Stator; 24. Rotor; 25. Heat conducting layer; 3. Brushless rotary variable engine; 31. Rotary variable component; 32. Ring variable component; 4. Heat dissipation mechanism; 41. Heat dissipation ring plate; 42. Heat dissipation spiral tube; 43. Peristaltic pump; 44. Heat dissipation fin plate; 45. Water outlet; 46. Water inlet; 51. First bearing; 52. Second bearing; 53. Key; 6. Ring; 7. Connecting seat; 71. Connecting hole; 72. Shock absorber. DETAILED DESCRIPTION

[0020] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0025] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0026] See also Figures 1 to 8 The present invention provides a dual-redundancy servo motor, comprising a housing 1, a drive mechanism 2, a brushless rotary motor 3, and a heat dissipation mechanism 4. The housing 1 can be fixed at any suitable position by an operator, the drive mechanism 2 is arranged in the housing 1, the drive mechanism 2 can provide power for external equipment, and the brushless rotary motor 3 can be used as a sensor to detect the rotation speed and rotation position of the rotor 24 in the drive mechanism 2.

[0027] Furthermore, the interior of the shell 1 is hollow, a first opening 11 is opened at one end of the shell 1 , and the other end of the shell 1 is connected to an end cover 12 .

[0028] Furthermore, a connection seat 7 is provided at one end of the housing 1, a connection hole 71 is provided on the connection seat 7, and a shock absorber 72 is provided on the connection seat 7. The housing 1 can be connected to any suitable position of the outside world through the connection hole 71, and the shock absorber can reduce the transmission of the servo motor 21's own vibration to the outside world.

[0029] exist Figures 1 to 8In an optional embodiment, the driving mechanism 2 includes a permanent magnet AC servo motor 21 and a transmission shaft 22. The permanent magnet AC servo motor 21 includes a stator 23 and a rotor 24. The stator 23 drives the rotor 24 to rotate to generate torque. The transmission shaft 22 is inserted into the first opening 11. The transmission shaft 22 is connected to the rotor 24. The stator 23 drives the transmission shaft 22 to rotate.

[0030] exist Figures 1 to 8 In an optional embodiment, two brushless resolver engines 3 are provided, and the brushless resolver engines 3 are arranged adjacent to the transmission shaft 22. Both brushless resolver engines 3 have a resolver component 31, and the two resolver components 31 are respectively arranged at both ends of the inner wall of the shell 1, and a ring-shaped resolver component 32 is arranged between the two resolver components 31, and the two resolver components 31 are connected to the ring-shaped resolver component 32.

[0031] It should be noted that in the prior art, each brushless resolver motor 3 has a resolver component 31 and a ring-type resolver component 32. In the present invention, the two resolver components 31 in the two brushless resolver motors 3 can share one ring-type resolver component 32, which effectively improves the space utilization rate and makes the servo motor 21 smaller and saves more materials while ensuring its performance.

[0032] Furthermore, a convex key 53 is provided on the transmission shaft 22 , and the convex key 53 can enable the transmission shaft 22 to cooperate well with external equipment, ensuring that the servo motor 21 can provide driving function for the external equipment.

[0033] Furthermore, the dual-redundancy servo motor includes a first bearing 51 and a second bearing 52 , which are located at both ends of the rotor 24 , and are both located between the housing 1 and the transmission shaft 22 , and support the rotation of the transmission shaft 22 .

[0034] exist Figures 1 to 8 In an optional embodiment, the heat dissipation mechanism 4 includes a heat dissipation ring plate 41, a heat dissipation spiral tube 42 and a peristaltic pump 43. The two heat dissipation ring plates 41 are arranged on the outer surface of the shell 1, and the two ends of the heat dissipation spiral tube 42 are respectively connected to the two heat dissipation ring plates 41. The heat dissipation spiral tube 42 is provided with a heat dissipation fin plate 44. The shell 1 is provided with a water outlet 45 and a water inlet 46. The water outlet 45 is connected to the peristaltic pump 43 through a pipe, the peristaltic pump 43 is connected to one end of the heat dissipation spiral tube 42 through a pipe, and the other end of the heat dissipation spiral tube 42 is connected to the water inlet 46.

[0035] Furthermore, a heat conducting layer 25 is provided between the housing 1 and the stator 23 , and a water flow channel 13 is provided inside the housing 1 .

[0036] It should be noted that one end of the water flow channel 13 is connected to the water inlet 46 , and the other end of the water flow channel 13 is connected to the water outlet 45 , and the water flow channel 13 is a multi-section bending type.

[0037] Therefore, with the cooperation of the heat dissipation mechanism 4, the servo motor 21 can dissipate heat quickly to ensure that its performance is not affected by temperature.

[0038] Furthermore, the dual-redundancy servo motor includes a control mechanism disposed outside, and the control mechanism is connected to the peristaltic pump 43, the brushless resolver motor 3, and the permanent magnet AC servo motor 21. The control mechanism can receive a detection signal from the brushless resolver transmitter and control the start and stop of the peristaltic pump 43 and the permanent magnet AC servo motor 21 at the same time.

[0039] Furthermore, the dual-redundancy servo motor has a collar 6 , the center of which is hollow, and the transmission shaft 22 passes through the center of the collar 6 . One end of the collar 6 is connected to the housing 1 , and the other end of the collar 6 is connected to the brushless resolver motor 3 .

[0040] Furthermore, the transmission shaft 22 , the stator 23 , the rotor 24 , the collar 6 , the first bearing 51 and the second bearing 52 are coaxial.

[0041] A dual-redundancy servo motor of the present invention has the following specific steps: The rotation speed and rotation position of the rotor 24 in the driving mechanism 2 are detected by the brushless rotary motor 3. Specifically, there are two brushless rotary motors 3, and both of the two brushless rotary motors 3 have a rotary component 31. The rotary component 31 is located at both ends of the housing 1. A ring variable component 32 is arranged between the two rotary components 31. Both of the two rotary components 31 are connected in parallel with the ring variable component 32, so as to detect the rotation speed and rotation position of the rotor 24 of the driving mechanism 2. In the prior art, each brushless rotary motor 3 is provided with a rotary component 31 and a ring variable component 32 connected to each other. Through this method, the space utilization rate can be effectively improved, and the servo motor 21 can be made smaller and more material-saving while ensuring its performance.

[0042] By arranging multiple sections of curved water flow channels 13 inside the shell 1, the multiple sections of curved water flow channels 13 can expand the heat conduction area, thereby improving the heat conduction efficiency, and a heat dissipation mechanism 4 is arranged on the outside of the shell 1, wherein a pipeline connects the two ends of the water flow channel 13 to realize the circulation of water flow, and a peristaltic pump 43, a heat dissipation ring plate 41 and a heat dissipation spiral tube 42 are arranged between the pipelines. The peristaltic pump 43 can drive the water flow in the water flow channel 13 and the pipeline, the heat dissipation ring plate 41 can play a fixed support role, the heat dissipation spiral tube 42 is located between the two heat dissipation ring plates 41, and the water flow is cooled by the heat dissipation spiral tube 42. Specifically, a heat dissipation fin plate 44 is arranged on the heat dissipation spiral tube 42, and the heat dissipation fin plate 44 increases the contact area between the pipeline and the air, thereby achieving a better heat dissipation effect. The work of the water flow circulating in the heat dissipation mechanism 4 can ensure that the temperature of the servo motor 21 is in a suitable state, thereby ensuring its stability during operation.

[0043] By arranging the first bearing 51 and the second bearing 52 at both ends of the rotor 24 , the first bearing 51 and the second bearing 52 are located between the housing 1 and the transmission shaft 22 , and the first bearing 51 and the second bearing 52 can ensure that the transmission shaft 22 can work better and more smoothly.

[0044] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0045] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A double-redundant servo motor, characterized in that: include: A shell (1), the interior of the shell (1) is hollow, one end of the shell (1) is provided with a first opening (11), and the other end of the shell (1) is connected to an end cover (12); A drive mechanism (2), the drive mechanism (2) comprising a permanent magnet AC servo motor (21) and a transmission shaft (22), the permanent magnet AC servo motor (21) comprising a stator (23) and a rotor (24), the stator (23) driving the rotor (24) to rotate to generate torque, the transmission shaft (22) being inserted into the first opening (11), the transmission shaft (22) being connected to the rotor (24), and the stator (23) driving the transmission shaft (22) to rotate; Two brushless resolver engines (3), the brushless resolver engines (3) being arranged adjacent to the transmission shaft (22), the two brushless resolver engines (3) each having a resolver component (31), the two resolver components (31) being arranged at two ends of an inner wall of the housing (1), a ring-shaped resolver component (32) being arranged between the two resolver components (31), and the two resolver components (31) being connected to the ring-shaped resolver component (32); A heat dissipation mechanism (4), the heat dissipation mechanism (4) comprising a heat dissipation ring plate (41), a heat dissipation spiral tube (42) and a peristaltic pump (43), the two heat dissipation ring plates (41) being arranged on the outer surface of the shell (1), the two ends of the heat dissipation spiral tube (42) being respectively connected to the two heat dissipation ring plates (41), the heat dissipation spiral tube (42) being provided with a heat dissipation fin plate (44), the shell (1) being provided with a water outlet (45) and a water inlet (46), the water outlet (45) being connected to the peristaltic pump (43) through a pipeline, the peristaltic pump (43) being connected to one end of the heat dissipation spiral tube (42) through a pipeline, and the other end of the heat dissipation spiral tube (42) being connected to the water inlet (46).

2. The dual-redundancy servo motor according to claim 1, characterized in that: A heat-conducting layer (25) is provided between the housing (1) and the stator (23), and a water flow channel (13) is provided inside the housing (1).

3. The dual-redundancy servo motor according to claim 2, characterized in that: One end of the water flow channel (13) is connected to the water inlet (46), and the other end of the water flow channel (13) is connected to the water outlet (45), and the water flow channel (13) is in a multi-section bending shape.

4. The dual-redundancy servo motor according to claim 1, characterized in that: The double-redundant servo motor comprises a first bearing (51) and a second bearing (52), wherein the first bearing (51) and the second bearing (52) are located at two ends of the rotor (24), and the first bearing (51) and the second bearing (52) are both located between the housing (1) and the transmission shaft (22), and the first bearing (51) and the second bearing (52) support the rotation of the transmission shaft (22).

5. The dual-redundancy servo motor according to claim 1, characterized in that: The transmission shaft (22) is provided with a convex key (53).

6. The dual-redundancy servo motor according to claim 1, characterized in that: The dual-redundancy servo motor comprises a control mechanism arranged outside, wherein the control mechanism is connected to the peristaltic pump (43), the brushless resolver motor (3) and the permanent magnet AC servo motor (21).

7. The dual-redundancy servo motor according to claim 1, characterized in that: A double-redundant servo motor comprises a collar (6), the center of the collar (6) is hollow, the transmission shaft (22) passes through the center of the collar (6), one end of the collar (6) is connected to the housing (1), and the other end of the collar (6) is connected to the brushless rotary motor (3).

8. The dual-redundancy servo motor according to claim 1, characterized in that: A connecting seat (7) is provided at one end of the housing (1), a connecting hole (71) is provided on the connecting seat (7), and a vibration damper (72) is provided on the connecting seat (7).

9. The dual-redundancy servo motor according to claim 1, characterized in that: The transmission shaft (22), the stator (23), the rotor (24), the collar (6), the first bearing (51), and the second bearing (52) are coaxial.

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