Connecting structure of actuator and servo motor

Abstract

The utility model provides a connecting structure of an actuator and a servo motor, and belongs to the technical field of servo motors. According to the utility model, the problem that the direct connection of the servo motor and the actuator in the prior art causes unstable connection during operation is solved. The servo motor comprises a servo motor body and an actuator, the actuator comprises a protective shell, a sleeve, a ball screw and an actuator assembly, a motor lining is fixedly installed on the front side of the servo motor body, a connecting base plate is fixedly installed on the front side of the motor lining, a mounting table is integrally formed on the connecting base plate, and a through hole is formed in the connecting base plate. A bearing seat is fixed in the through hole, one side of the bearing seat is cylindrical, the other side of the bearing seat extends to form a plane, a stop piece is fixed on the bearing seat, the ball screw penetrates through the bearing seat, and a bearing is installed in the bearing seat and arranged on the outer side of the ball screw in a sleeved mode. The connecting structure has the advantages of being stable in connection and high in structural strength.

Description

Technical Field

[0001] The utility model belongs to the technical field of servo motors and relates to a connection structure between an actuator and a servo motor. Background Art

[0002] The actuator is an essential and important part of the automatic control system. Its function is to receive the control signal sent by the controller and change the size of the controlled medium, so as to maintain the controlled variable at the required value or within a certain range. The actuator generally has an electrical interface for connecting with electrical equipment.

[0003] A Chinese patent with publication number CN212480313U discloses an electric actuator, including a fixed housing, a transmission rod, a valve body, a valve stem, a servo motor and a support rod, characterized in that: the servo motor is fixedly installed inside the fixed housing, the output end of the servo motor is fixedly connected to a worm, the other end of the worm is rotatably connected to the fixed housing, the worm is connected to a worm wheel through threaded engagement, the worm wheel is fixedly connected to the transmission rod, a first gear is fixedly installed at the lower end of the transmission rod, a second mounting plate is fixedly installed at the upper end of the transmission rod, a heat insulation board layer is arranged between the second mounting plate and the fixed housing, and both sides of the second mounting plate are movably connected to the support rod.

[0004] In this patent, the servo motor is directly connected to the actuator, which is easily damaged or loose during use. Utility Model Content

[0005] The purpose of the utility model is to provide a connection structure between an actuator and a servo motor in view of the above problems existing in the prior art.

[0006] The objectives of the utility model can be achieved through the following technical solutions: a connection structure of an actuator and a servo motor, comprising a servo motor body and an actuator, the actuator comprising a protective shell, a sleeve, a ball screw and an actuator assembly, a motor bushing is fixedly installed on the front side of the servo motor body, a connecting pad is fixedly installed on the front side of the motor bushing, a mounting platform is integrally formed on the connecting pad, a through hole is opened on the connecting pad, a bearing seat is fixed in the through hole, one side of the bearing seat is cylindrical and a plane extends from the other side, a stopper is fixed on the bearing seat, the ball screw passes through the bearing seat, a bearing is installed inside the bearing seat and the bearing sleeve is arranged on the outside of the ball screw, a motor shaft extends from the servo motor body, a coupling is fixed between the motor shaft and the ball screw, and the coupling is installed inside the motor bushing.

[0007] In the above-mentioned connection structure between an actuator and a servo motor, the sleeve and the mounting platform are completely identical in shape and size, and one end of the sleeve is completely fitted and fixed to one end of the mounting platform.

[0008] In the above-mentioned connection structure between an actuator and a servo motor, a top plate is installed on one side of the ball screw, a plurality of first connection holes are opened on the top plate, a plurality of second connection holes are opened on the mounting platform, and a fixing column is installed between the first connection holes and the second connection holes.

[0009] In the above-mentioned connection structure between an actuator and a servo motor, a plurality of grooves are formed on the outer surface of the actuator assembly.

[0010] In the above-mentioned connection structure between an actuator and a servo motor, the protective shell is sleeved on the outside of the sleeve, and the inner wall of the protective shell is in contact with the outer wall of the sleeve.

[0011] In the above-mentioned connection structure between an actuator and a servo motor, a support cover is fixedly mounted on the outside of the motor bushing.

[0012] In the above-mentioned connection structure between an actuator and a servo motor, a fixed bearing nut is fixed on the ball screw.

[0013] Compared with the prior art, the connection structure of an actuator and a servo motor provided by the utility model has the following beneficial effects: 1. By adding a motor bushing between the actuator and the servo motor, the actuator and the servo motor are not directly connected, thereby effectively avoiding damage or looseness caused by direct connection between the actuator and the servo motor; 2. By installing a stopper on one side of the plane of the bearing seat, the stability of the bearing seat and the internal bearing is effectively improved; 3. By installing a fixing column between the mounting platform and the top plate, the connection stability between the actuator and the connecting pad is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] In the figure: 1. servo motor body; 11. motor shaft; 2. actuator; 21. protective shell; 22. sleeve; 23. ball screw; 24. actuator assembly; 241. groove; 25. top plate; 251. first connecting hole; 3. motor bushing; 4. connecting pad; 41. mounting table; 411. second connecting hole; 42. through hole; 5. bearing seat; 51. stopper; 6. bearing; 7. coupling; 8. fixing column; 9. support cover; 10. fixing bearing nut. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figures 1 to 3 As shown, this embodiment includes a servo motor body 1 and an actuator 2, the actuator 2 includes a protective shell 21, a sleeve 22, a ball screw 23 and an actuator assembly 24, a motor bushing 3 is fixedly installed on the front side of the servo motor body 1, a connecting pad 4 is fixedly installed on the front side of the motor bushing 3, a mounting platform 41 is integrally formed on the connecting pad 4, a through hole 42 is opened on the connecting pad 4, a bearing seat 5 is fixed in the through hole 42, one side of the bearing seat 5 is cylindrical and the other side extends out with a plane, a stopper 51 is fixed on the plane of the bearing seat 5 by bolts, the ball screw 23 passes through the bearing seat 5, a bearing 6 is installed inside the bearing seat 5, and the number of bearings 6 is two, the bearing 6 is sleeved on the outside of the ball screw 23, a motor shaft 11 extends out of the servo motor body 1, a coupling 7 is respectively connected to the motor shaft 11 and the ball screw 23, and the coupling 7 is installed inside the motor bushing 3.

[0020] like Figures 1 to 3 As shown, the protective shell 21 is sleeved on the outside of the sleeve 22, and the inner wall of the protective shell 21 fits with the outer wall of the sleeve 22. The sleeve 22 and the mounting platform 41 are exactly the same in shape and size and are both circular. One end of the sleeve 22 is completely fitted and fixed to one end of the mounting platform 41, and the inner wall of one end of the protective shell 21 is fitted and fixed to the outer surface of the mounting platform 41. A top plate 25 is installed on one side of the ball screw 23, and a plurality of first connecting holes 251 are opened on the top plate 25, and a plurality of second connecting holes 411 are opened on the mounting platform 41. The fixing column 8 is installed between the first connecting hole 251 and the second connecting hole 411. The fixing column 8 can play a role in strengthening the structural strength between the actuator 2 and the connecting gasket 4. The outer surface of the actuator assembly 24 is provided with grooves 241 with the same number as the fixing column 8. The outer surface of the fixing column 8 is completely fitted with the grooves 241, which plays a role in fixing and clamping the actuator assembly 24.

[0021] To elaborate further, Figures 2 to 3 As shown, a fixed bearing nut 10 is fixed on the ball screw 23 on one side of the bearing seat 5, one side of the fixed bearing nut 10 is tightly attached to the one side of the bearing seat 5 and the fixed bearing nut 10 is locked and fixed to the ball screw 23. The fixed bearing nut 10 completely locks the bearing seat 5 to prevent the bearing 6 in the bearing seat 5 from being offset during operation.

[0022] To elaborate further, Figure 1 to Figure 2 As shown, a support cover 9 is fixedly installed on the outside of the motor bushing 3. The support cover 9 is sleeved on the bottom and both sides of the motor bushing 3. The support cover 3 facilitates the connection and fixation of the servo motor body 1 with other devices.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A connection structure between an actuator and a servo motor, comprising a servo motor body (1) and an actuator (2), wherein the actuator (2) comprises a protective shell (21), a sleeve (22), a ball screw (23) and an actuator assembly (24), characterized in that: A motor bushing (3) is fixedly mounted on the front side of the servo motor body (1), a connecting pad (4) is fixedly mounted on the front side of the motor bushing (3), a mounting platform (41) is integrally formed on the connecting pad (4), a through hole (42) is opened on the connecting pad (4), a bearing seat (5) is fixed in the through hole (42), one side of the bearing seat (5) is cylindrical and the other side extends out with a flat surface, a stopper (51) is fixed on the bearing seat (5), the ball screw (23) passes through the bearing seat (5), a bearing (6) is mounted inside the bearing seat (5) and the bearing (6) is sleeved on the outside of the ball screw (23), a motor shaft (11) extends from the servo motor body (1), a coupling (7) is fixed between the motor shaft (11) and the ball screw (23), and the coupling (7) is mounted inside the motor bushing (3).

2. The connection structure between an actuator and a servo motor according to claim 1, characterized in that: The sleeve (22) and the mounting platform (41) are completely identical in shape and size, and one end of the sleeve (22) is completely fitted and fixed to one end of the mounting platform (41).

3. The connection structure between an actuator and a servo motor according to claim 1, characterized in that: A top plate (25) is mounted on one side of the ball screw (23), a plurality of first connection holes (251) are formed on the top plate (25), a plurality of second connection holes (411) are formed on the mounting platform (41), and a fixing column (8) is mounted between the first connection holes (251) and the second connection holes (411).

4. The connection structure between an actuator and a servo motor according to claim 1, characterized in that: The outer surface of the actuator assembly (24) is provided with a plurality of grooves (241).

5. The connection structure between an actuator and a servo motor according to claim 1, characterized in that: The protective shell (21) is sleeved on the outside of the sleeve (22), and the inner wall of the protective shell (21) fits the outer wall of the sleeve (22).

6. The connection structure of an actuator and a servo motor according to claim 1, characterized in that: A support cover (9) is fixedly mounted on the outside of the motor bushing (3).

7. The connection structure of an actuator and a servo motor according to claim 1, characterized in that: A fixed bearing nut (10) is fixed on the ball screw (23).

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