A servo motor adapted to oil pressure environment

Abstract

The present invention relates to the field of motors, and discloses a servo motor adapted to an oil pressure environment. The servo motor includes a motor housing and an end cover mounted on the housing. The motor housing and the end cover together form a sealed cavity. An annular sealing plate is provided at the port of the motor housing, and an annular sealing groove matched with the annular sealing plate is provided at the port of the end cover. A sealing ring is installed in the annular sealing groove of the end cover. When the end cover is mounted on the motor housing, the annular sealing plate enters the annular sealing groove and presses against the sealing ring. An annular sealing gasket and a pressing mechanism are installed in the sealing cavity. The outer side of the annular sealing gasket is pressed against the connection part of the motor housing and the end cover. The pressing mechanism is used to press the annular sealing gasket against the connection part of the motor housing and the end cover. The present invention realizes efficient sealing treatment of the connection part between the motor housing and the end cover through the primary sealing of the sealing ring and the secondary sealing of the annular sealing gasket, thereby improving the sealing performance between the motor housing and the end cover.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a servo motor adapted to an oil pressure environment. Background Art

[0002] A servo motor is an engine that controls the operation of mechanical components in a servo system. It is an auxiliary motor indirect speed change device. Some servo motors often need to work in an oil pressure environment, such as motors used in hydraulic systems and motors used in submersible electric pumps. Since these motors need to work in an oil pressure environment, they need to have good sealing performance.

[0003] In the sealing requirements of the motor, the seal between the motor housing and the end cover plays an important role. The motor housing and the end cover are generally sealed by adding a sealing ring. In a normal atmospheric environment, this sealing method can prevent foreign substances from entering the motor, but in a high-pressure oil pressure environment, oil may still squeeze into the motor from the gap between the motor housing and the end cover, thereby affecting the normal operation of the motor. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a servo motor that adapts to the oil pressure environment, which solves the problem pointed out in the background technology that in an oil pressure environment with higher pressure, oil may squeeze into the interior of the motor from the gap between the motor housing and the end cover, thereby affecting the normal operation of the motor.

[0005] The present invention solves the above technical problems by the following technical means:

[0006] A servo motor adapted to an oil pressure environment, the servo motor comprising a motor housing and an end cover mounted on the housing, the motor housing and the end cover together enclosing a sealed cavity, an annular sealing plate is provided at the port of the motor housing, an annular sealing groove matched with the annular sealing plate is provided at the port of the end cover, a sealing ring is installed in the annular sealing groove of the end cover, when the end cover is mounted on the motor housing, the annular sealing plate enters the annular sealing groove and presses against the sealing ring; an annular sealing gasket and a pressing mechanism are installed in the sealing cavity, the outer side surface of the annular sealing gasket is tightly attached to the connecting portion of the motor housing and the end cover, and the pressing mechanism is used to press the annular sealing gasket against the connecting portion of the motor housing and the end cover.

[0007] Furthermore, the clamping mechanism includes a mounting base, a plurality of clamping components and a transmission structure, the mounting base is fixed inside the motor housing, the plurality of clamping components are arranged in a circular structure in the inner ring of the annular sealing gasket, and the clamping components are slidably mounted on the mounting base along the radial direction of the annular sealing gasket, and the transmission structure is used to drive the clamping component to move toward / away from the annular sealing gasket. When the clamping component moves toward the direction approaching the annular sealing gasket, the clamping component can clamp the annular sealing gasket against the connecting portion of the motor housing and the end cover.

[0008] Furthermore, the clamping assembly includes a clamping plate and a sliding rod, the sliding rod is slidably mounted on a mounting base along a radial direction of the annular sealing gasket, the clamping plate is mounted on one end of the sliding rod facing the annular sealing gasket, the clamping plate is an arc-shaped plate, and when the clamping plate contacts the annular sealing gasket, the side of the clamping plate facing away from the sliding rod is completely fitted on the inner side surface of the annular sealing gasket.

[0009] Furthermore, the two ends of the clamping plate are respectively provided with a first extension plate and a second extension plate along the extension direction of the arc; when all the clamping plates move in a direction away from the annular sealing gasket, the first extension plate of the clamping plate can be staggered with the second extension plate of the adjacent clamping plate; when all the clamping plates are pressed against the inner side surface of the annular sealing gasket, the first extension plate and the second extension plate between two adjacent clamping plates can be pressed against the portion of the annular sealing gasket located between the two adjacent clamping plates.

[0010] Furthermore, the clamping assembly also includes a buffer plate and a plurality of buffer rods, the buffer plate is arranged between the clamping plate and the sliding rod, the buffer plate is fixed on the sliding rod, one ends of the plurality of buffer rods are fixed on the clamping plate, and the axis of the buffer rod is arranged parallel to the sliding direction of the sliding rod, one end of the buffer rod away from the buffer plate passes through the buffer plate and can slide along its own axial direction, a buffer spring is sleeved on the buffer rod, one end of the buffer spring is fixed on the buffer plate, and the other end of the buffer spring is fixed on the clamping plate.

[0011] Furthermore, the transmission structure includes an annular transmission plate and a plurality of threaded rods, the number of the threaded rods is equal to the number of the clamping assemblies, and the threaded rods correspond to the clamping assemblies one by one, a threaded hole is provided at one end of the sliding rod away from the clamping plate, one end of the threaded rod is threadedly connected in the threaded hole, the end of the threaded rod located outside the threaded hole is rotatably mounted on a mounting base, and a transmission gear is fixed on the threaded rod; the annular transmission plate is rotatably mounted on the mounting base, and an annular rack is provided on one side of the annular transmission plate, and the annular rack is meshedly connected with all the transmission gears.

[0012] Furthermore, the transmission structure also includes an annular drive plate, which is fixed on the end cover, the axis of the annular drive plate coincides with the axis of the annular transmission plate, and the annular drive plate is transmission-connected to the annular transmission plate. When the end cover rotates relative to the motor housing, the annular transmission plate can be driven to rotate around its own axis through the annular drive plate.

[0013] Furthermore, the annular driving plate is provided with a plurality of driving baffles, and the plurality of driving baffles are arranged in a circular structure; the annular transmission plate is provided with a plurality of transmission baffles, and the plurality of transmission baffles are arranged in a circular structure; when the end cover is installed on the motor housing, the driving baffle can be located between two adjacent transmission baffles, and the transmission baffle is located on the movement trajectory of the driving baffle.

[0014] Furthermore, the mounting base includes an annular connecting plate and a plurality of mounting platforms, the annular connecting plate is fixed on the inner wall of the motor housing, the number of the mounting platforms is equal to the number of the clamping assemblies, and the mounting platforms correspond one-to-one to the clamping assemblies, the mounting platforms are fixed on the annular connecting plate, and the mounting platforms are provided with a sliding platform for installing a sliding rod and a rotating platform for installing a threaded rod.

[0015] Furthermore, an annular groove for mounting an annular sealing gasket is fixed on the inner side wall of the motor housing, and a partial structure of the annular sealing gasket is embedded in the annular groove.

[0016] Beneficial effects of the present invention:

[0017] 1. The present application realizes efficient sealing treatment of the connection part between the motor housing and the end cover through the primary sealing of the sealing ring and the secondary sealing of the annular sealing gasket, thereby improving the sealing performance between the motor housing and the end cover, and further reducing the risk of oil squeezing into the inside of the motor from the gap between the motor housing and the end cover in an oil pressure environment and affecting the normal operation of the motor.

[0018] 2. The present application provides a clamping mechanism. When the transmission structure drives the clamping assembly to move toward the direction close to the annular sealing gasket, the clamping assembly can clamp the annular sealing gasket against the connection between the motor housing and the end cover, thereby improving the sealing performance of the annular sealing gasket on the connection between the motor housing and the end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the structure of the servo motor in an embodiment of the present application;

[0020] Figure 2 is a cross-sectional view of a servo motor in an embodiment of the present application;

[0021] Figure 3 This is an embodiment of the present application Figure 2 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 is an exploded view of the tightening mechanism in the embodiment of the present application;

[0023] Figure 5 is a structural schematic diagram of a tightening assembly in an embodiment of the present application;

[0024] Among them, 1. motor housing; 11. annular sealing plate; 12. annular groove; 2. end cover; 21. annular sealing groove; 22. sealing ring; 3. annular sealing gasket; 4. mounting base; 41. annular connecting plate; 42. mounting table; 43. sliding table; 44. annular mounting plate; 45. rotating table; 5. clamping assembly; 51. clamping plate; 511. first extension plate; 512. second extension plate; 52. sliding rod; 53. buffer plate; 54. buffer rod; 55. buffer spring; 6. transmission structure; 61. annular transmission plate; 611. annular rack; 612. transmission baffle; 62. threaded rod; 621. transmission gear; 63. annular drive plate; 631. drive baffle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0026] like Figure 1-Figure 5 As shown, the embodiment of the present application provides a servo motor adapted to an oil pressure environment. The servo motor includes a motor housing 1 and an end cover 2 mounted on the housing. The motor housing 1 and the end cover 2 are both housing structures with one end open. Connecting flanges are arranged at the ports of the motor housing 1 and the end cover 2. When assembling the motor housing 1 and the end cover 2, the connecting flanges of the motor housing 1 and the end cover 2 are fixed together by bolts. The motor housing 1 and the end cover 2 together form a circular sealed cavity, and the stator, rotor and other structures of the servo motor are all installed in the sealed cavity.

[0027] An annular sealing plate 11 is provided at the port of the motor housing 1, an annular sealing groove 21 matching the annular sealing plate 11 is provided at the port of the end cover 2, and an annular sealing ring 22 is installed in the annular sealing groove 21 of the end cover 2. When the end cover 2 is assembled on the motor housing 1, the annular sealing plate 11 can enter the annular sealing groove 21 and press against the sealing ring 22, thereby realizing the primary sealing of the connection part between the motor housing 1 and the end cover 2.

[0028] An annular sealing gasket 3 and a pressing mechanism are installed in the sealing cavity, and the outer diameter of the annular sealing gasket 3 is slightly larger than the inner diameter of the sealing cavity. An annular groove 12 for installing the annular sealing gasket 3 is fixed on the inner side wall of the motor housing 1, and a part of the structure of the annular sealing gasket 3 can be embedded in the annular groove 12, so as to install the annular sealing gasket 3. When the annular sealing gasket 3 is installed in the annular groove 12, and the end cover 2 is installed on the motor housing 1, the outer side surface of the annular sealing gasket 3 can be tightly attached to the connection part of the motor housing 1 and the end cover 2, and the pressing mechanism is used to press the annular sealing gasket 3 against the connection part of the motor housing 1 and the end cover 2, so as to perform secondary sealing on the connection part of the motor housing 1 and the end cover 2.

[0029] This embodiment realizes efficient sealing treatment of the connection part between the motor housing 1 and the end cover 2 through the primary sealing of the sealing ring 22 and the secondary sealing of the annular sealing gasket 3, thereby improving the sealing performance between the motor housing 1 and the end cover 2, and further reducing the risk of oil squeezing into the inside of the motor through the gap between the motor housing 1 and the end cover 2 in an oil pressure environment and affecting the normal operation of the motor.

[0030] In this embodiment, the clamping mechanism includes a mounting base 4, a plurality of clamping components 5 and a transmission structure 6. The mounting base 4 is fixed inside the motor housing 1 by bolts. The number of the clamping components 5 is specifically set to six in this embodiment. The six clamping components 5 are arranged in a circular structure in the inner ring of the annular sealing gasket 3, and the clamping components 5 are slidably mounted on the mounting base 4 along the radial direction of the annular sealing gasket 3. The transmission structure 6 is used to drive the clamping component 5 to move toward / away from the annular sealing gasket 3. When the transmission structure 6 drives the clamping component 5 to move toward the annular sealing gasket 3, the clamping component 5 can clamp the annular sealing gasket 3 against the connection between the motor housing 1 and the end cover 2, thereby improving the sealing performance of the annular sealing gasket 3 on the connection between the motor housing 1 and the end cover 2.

[0031] In this embodiment, the clamping assembly 5 includes a clamping plate 51 and a sliding rod 52, the sliding rod 52 is slidably mounted on the mounting base 4 along the radial direction of the annular sealing gasket 3, and the clamping plate 51 is mounted on one end of the sliding rod 52 facing the annular sealing gasket 3. The clamping plate 51 is an arc-shaped plate, the radius of the clamping plate 51 is substantially equal to the radius of the annular sealing gasket 3, and when the clamping plate 51 contacts the annular sealing gasket 3, the side of the clamping plate 51 away from the sliding rod 52 can be completely fitted on the inner side of the annular sealing gasket 3, thereby improving the sealing performance of the annular sealing gasket 3 on the connection portion between the motor housing 1 and the end cover 2.

[0032] In this embodiment, the two ends of the clamping plate 51 are respectively provided with a first extension plate 511 and a second extension plate 512 along the extension direction of the arc, and the first extension plate 511 and the second extension plate 512 are located at different horizontal heights. When all the clamping plates 51 move in a direction away from the annular sealing gasket 3, the first extension plate 511 of any clamping plate 51 can be interlaced with the second extension plate 512 of the adjacent clamping plate 51; when all the clamping plates 51 are pressed against the inner side of the annular sealing gasket 3, the first extension plate 511 and the second extension plate 512 between two adjacent clamping plates 51 can be pressed against the portion of the annular sealing gasket 3 located between the two adjacent clamping plates 51. By such a configuration, the clamping area of ​​the annular sealing gasket 3 combined by all the clamping plates 51 can cover all parts of the annular sealing gasket 3, thereby improving the clamping effect of the clamping mechanism and improving the sealing performance of the annular sealing gasket 3 on the connection portion between the motor housing 1 and the end cover 2. In addition, such an arrangement also ensures that when all the abutting plates 51 move in a direction away from the annular sealing gasket 3 , adjacent abutting plates 51 will not interfere with each other.

[0033] In this embodiment, the abutting assembly 5 also includes a buffer plate 53 and a plurality of buffer rods 54. The buffer plate 53 is arranged between the abutting plate 51 and the sliding rod 52, and the buffer plate 53 is fixed on the sliding rod 52. The number of buffer rods 54 is specifically set to two in this embodiment, one end of each of the two buffer rods 54 is fixed on the abutting plate 51, and the axis of the buffer rod 54 is arranged parallel to the sliding direction of the sliding rod 52. The end of the buffer rod 54 away from the buffer plate 53 penetrates the buffer plate 53 and can slide along its own axis direction. The buffer rod 54 is sleeved with a buffer spring 55, one end of the buffer spring 55 is fixed on the buffer plate 53, and the other end of the buffer spring 55 is fixed on the abutting plate 51. Through such an arrangement, a certain buffer space is provided between the abutting plate 51 and the sliding rod 52, which is convenient for the staff to adjust the degree of abutment of the abutting plate 51 on the annular sealing gasket 3.

[0034] In this embodiment, the transmission structure 6 includes an annular transmission plate 61 and a plurality of threaded rods 62. The number of the threaded rods 62 is equal to the number of the abutting assemblies 5, which is also six, and the threaded rods 62 correspond to the abutting assemblies 5 one by one. A threaded hole is provided at one end of the sliding rod 52 away from the abutting plate 51, and one end of the threaded rod 62 is threadedly connected in the threaded hole. One end of the threaded rod 62 located outside the threaded hole is rotatably mounted on the mounting base 4, and a transmission gear 621 is fixed on the threaded rod 62. The annular transmission plate 61 is rotatably mounted on the mounting base 4, the axis of the annular transmission plate 61 coincides with the axis of the sealing chamber, and an annular rack 611 is provided on one side of the annular transmission plate 61, and the annular rack 611 is meshedly connected with all the transmission gears 621. It should be noted that the annular rack 611 and the transmission gear 621 are both conical teeth. When the annular transmission plate 61 rotates around its own axis, it can drive all the threaded rods 62 to rotate through the meshing connection between the annular rack 611 and all the transmission gears 621, thereby driving the sliding rod 52 to move toward / away from the annular sealing gasket 3. When the sliding rod 52 moves toward the sealing gasket, the clamping plate 51 can be pressed against the annular sealing gasket 3. When the sliding rod 52 moves away from the sealing gasket, the clamping plate 51 can be separated from the annular sealing gasket 3.

[0035] In this embodiment, the transmission structure 6 further includes an annular driving plate 63, which is fixed on the end cover 2, the axis of the annular driving plate 63 coincides with the axis of the annular transmission plate 61, and the annular driving plate 63 is in transmission connection with the annular transmission plate 61. When the end cover 2 is mounted on the motor housing 1 and before being fixed by bolts, the end cover 2 can be rotated relative to the motor housing 1, and when the end cover 2 rotates relative to the motor housing 1, the annular transmission plate 61 can be driven to rotate around its own axis by the annular driving plate 63, thereby driving the abutting plate 51 to abut against the annular sealing gasket 3, which is convenient for the staff to perform the sealing operation.

[0036] In addition, since there are buffer structures such as buffer plate 53, buffer rod 54, buffer spring 55 between the abutting plate 51 and the sliding rod 52, the end cover 2 can still continue to rotate even if the abutting plate 51 abuts against the annular sealing gasket 3. Therefore, when the staff rotates the end cover 2, they do not need to worry about the misalignment of the connecting flange of the motor housing 1 and the connecting flange of the end cover 2, which facilitates the installation operation of the staff.

[0037] In this embodiment, a plurality of driving baffles 631 are fixed on the annular driving plate 63, and the plurality of driving baffles 631 are arranged in a circumferential structure; a plurality of driving baffles 612 are fixed on the annular transmission plate 61, and the plurality of driving baffles 612 are arranged in a circumferential structure. In this embodiment, the number of driving baffles 631 and the number of driving baffles 612 are both set to six. When the end cover 2 is mounted on the motor housing 1, one driving baffle 631 can be located between two adjacent driving baffles 612, and the driving baffle 612 is also located on the motion track of the driving baffle 631. When the staff rotates the end cover 2, the annular driving plate 63 and the driving baffle 631 can be driven to rotate. When the driving baffle 631 contacts a driving baffle 612, the annular transmission plate 61 can be driven to rotate around its own axis, thereby driving the abutting plate 51 to abut the annular sealing gasket 3, which is convenient for the staff to perform sealing operations.

[0038] In this embodiment, the mounting base 4 includes an annular connecting plate 41 and a plurality of mounting platforms 42, and the annular connecting plate 41 is fixed to the inner side wall of the motor housing 1 by bolts. The number of mounting platforms 42 is equal to the number of the abutting assemblies 5, which is also six, and the mounting platforms 42 correspond to the abutting assemblies 5 one by one. The mounting platforms 42 are fixed to the annular connecting plate 41, and a sliding platform 43 for mounting the sliding rod 52 and a rotating platform 45 for mounting the threaded rod 62 are fixed to the mounting platforms 42. In addition, an annular mounting plate 44 is fixed to all the rotating platforms 45, and the annular mounting plate 44 is used to mount the annular transmission plate 61.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention. The techniques, shapes, and structural parts not described in detail in the present invention are all known technologies.

Claims

1. A servo motor adapted to an oil pressure environment, the servo motor comprising a motor housing (1) and an end cover (2) mounted on the housing, the motor housing (1) and the end cover (2) together enclosing a sealed cavity, characterized in that: An annular sealing plate (11) is provided at the port of the motor housing (1), an annular sealing groove (21) matched with the annular sealing plate (11) is provided at the port of the end cover (2), a sealing ring (22) is installed in the annular sealing groove (21) of the end cover (2), and when the end cover (2) is assembled on the motor housing (1), the annular sealing plate (11) enters the annular sealing groove (21) and presses against the sealing ring (22); an annular sealing gasket (3) and a pressing mechanism are installed in the sealing cavity, the outer side surface of the annular sealing gasket (3) is tightly attached to the connection part of the motor housing (1) and the end cover (2), and the pressing mechanism is used to press the annular sealing gasket (3) against the connection part of the motor housing (1) and the end cover (2); The pressing mechanism comprises a mounting base (4), a plurality of pressing assemblies (5) and a transmission structure (6); the mounting base (4) is fixed inside the motor housing (1); the plurality of pressing assemblies (5) are arranged in a circumferential structure in the inner ring of the annular sealing gasket (3); and the pressing assemblies (5) are slidably mounted on the mounting base (4) along the radial direction of the annular sealing gasket (3); the transmission structure (6) is used to drive the pressing assemblies (5) to move in a direction approaching or away from the annular sealing gasket (3); when the pressing assemblies (5) move in a direction approaching the annular sealing gasket (3), the pressing assemblies (5) can press the annular sealing gasket (3) against the connection portion between the motor housing (1) and the end cover (2); The abutting assembly (5) comprises a abutting plate (51) and a sliding rod (52), wherein the sliding rod (52) is slidably mounted on the mounting base (4) along the radial direction of the annular sealing gasket (3), and the abutting plate (51) is mounted on one end of the sliding rod (52) facing the annular sealing gasket (3). The abutting plate (51) is an arc-shaped plate, and when the abutting plate (51) contacts the annular sealing gasket (3), the side of the abutting plate (51) facing away from the sliding rod (52) is completely in contact with the inner side surface of the annular sealing gasket (3); The clamping assembly (5) further comprises a buffer plate (53) and a plurality of buffer rods (54), wherein the buffer plate (53) is arranged between the clamping plate (51) and the sliding rod (52), the buffer plate (53) is fixed on the sliding rod (52), one end of the plurality of buffer rods (54) are all fixed on the clamping plate (51), and the axis of the buffer rod (54) is arranged parallel to the sliding direction of the sliding rod (52), one end of the buffer rod (54) away from the buffer plate (53) passes through the buffer plate (53) and can slide along its own axis direction, and a buffer spring (55) is sleeved on the buffer rod (54), one end of the buffer spring (55) is fixed on the buffer plate (53), and the other end of the buffer spring (55) is fixed on the clamping plate (51).

2. The servo motor according to claim 1, characterized in that: The two ends of the abutting plate (51) are respectively provided with a first extension plate (511) and a second extension plate (512) along the extension direction of the arc; when all the abutting plates (51) move in a direction away from the annular sealing gasket (3), the first extension plate (511) of the abutting plate (51) can be interlaced with the second extension plate (512) of the adjacent abutting plate (51); when all the abutting plates (51) are pressed against the inner side surface of the annular sealing gasket (3), the first extension plate (511) and the second extension plate (512) between two adjacent abutting plates (51) can be pressed against the portion of the annular sealing gasket (3) located between the two adjacent abutting plates (51).

3. The servo motor according to any one of claims 1 to 2, characterized in that: The transmission structure (6) comprises an annular transmission plate (61) and a plurality of threaded rods (62), the number of the threaded rods (62) being equal to the number of the abutting assemblies (5), and the threaded rods (62) and the abutting assemblies (5) corresponding one to one, a threaded hole being provided at one end of the sliding rod (52) away from the abutting plate (51), one end of the threaded rod (62) being threadedly connected in the threaded hole, the end of the threaded rod (62) located outside the threaded hole being rotatably mounted on the mounting base (4), and a transmission gear (621) being fixed on the threaded rod (62); the annular transmission plate (61) being rotatably mounted on the mounting base (4), and an annular rack (611) being provided on one side of the annular transmission plate (61), and the annular rack (611) being meshedly connected with all the transmission gears (621).

4. The servo motor according to claim 3, characterized in that: The transmission structure (6) further comprises an annular driving plate (63), wherein the annular driving plate (63) is fixed on the end cover (2), the axis of the annular driving plate (63) coincides with the axis of the annular transmission plate (61), and the annular driving plate (63) is transmission-connected to the annular transmission plate (61), and when the end cover (2) rotates relative to the motor housing (1), the annular transmission plate (61) can be driven to rotate around its own axis by the annular driving plate (63).

5. The servo motor according to claim 4, characterized in that: The annular driving plate (63) is provided with a plurality of driving baffles (631), and the plurality of driving baffles (631) are arranged in a circumferential structure. The annular transmission plate (61) is provided with a plurality of transmission baffles (612), and the plurality of transmission baffles (612) are arranged in a circumferential structure. When the end cover (2) is mounted on the motor housing (1), the driving baffle (631) can be located between two adjacent transmission baffles (612), and the transmission baffle (612) is located on the movement trajectory of the driving baffle (631).

6. The servo motor according to claim 3, characterized in that: The mounting base (4) comprises an annular connecting plate (41) and a plurality of mounting platforms (42). The annular connecting plate (41) is fixed on the inner side wall of the motor housing (1). The number of the mounting platforms (42) is equal to the number of the abutting assemblies (5), and the mounting platforms (42) correspond to the abutting assemblies (5) one by one. The mounting platforms (42) are fixed on the annular connecting plate (41). The mounting platforms (42) are provided with a sliding platform (43) for mounting a sliding rod (52) and a rotating platform (45) for mounting a threaded rod (62).

7. The servo motor according to claim 1, characterized in that: An annular groove (12) for mounting an annular sealing gasket (3) is fixed on the inner side wall of the motor housing (1), and a partial structure of the annular sealing gasket (3) is embedded in the annular groove (12).

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