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CN-115560118-B - Manual electric actuator

CN115560118BCN 115560118 BCN115560118 BCN 115560118BCN-115560118-B

Abstract

The invention discloses a manual electric actuator, which is technically characterized by comprising a shell and a driving element arranged in the shell, wherein the driving element comprises an electric driving element arranged in the shell and a manual element arranged outside the shell, a middle piece is fixedly arranged in the shell, the shell comprises an upper shell and a lower shell which are mutually buckled and fixed, the manual element is arranged outside the upper shell, an external connecting piece is further arranged on the lower shell, the external connecting piece passes through the lower shell to be buckled and fixed with the middle piece, and the driving element further comprises an output shaft which passes through the external connecting piece to be connected with an external valve body.

Inventors

  • LIU JIA
  • LUO DAOGUAN

Assignees

  • 浙江奥格智能科技有限公司

Dates

Publication Date
20260508
Application Date
20221014

Claims (15)

  1. 1. A manual electric actuator comprises a shell and a driving element arranged in the shell, and is characterized in that the driving element comprises an electric driving part arranged in the shell and a manual part arranged outside the shell, the driving element further comprises an output shaft (4) which penetrates through an external connecting piece (3) and is connected with an external valve body, the electric driving part comprises a motor (8) arranged outside an intermediate shell (6), a motor (8) shaft of the motor (8) penetrates through the intermediate shell (6) and is connected with a gear assembly arranged in Rong Aocao, the gear assembly drives the output shaft (4) to move up and down, the gear assembly comprises a plurality of transmission gears (10) and an output gear (11), the output gear (11) comprises a gear post (12) and a gear disc (13) arranged outside the gear post (12), a first external gear ring (14) and a second external gear ring (15) are arranged on the gear post (12) above the gear disc (13), the gear post (12) is arranged in a hollow mode, the inner end of the output shaft (12) is provided with external threads, the external thread is in threaded connection with the internal thread of the gear column (12); the upper end of the gear column (12) is in threaded connection with a screw (54), an abutting spring (16) is arranged below the screw (54), an abutting ball (17) is arranged below the abutting spring (16), four fixed points (18) are arranged between the gear disc (13) and the gear column (12), an annular elastic sheet (55) is arranged on the side face of the gear disc (13) where the fixed points (18) are located, the annular elastic sheet (55) is provided with a horn shape, the edge of the upper end of the annular elastic sheet is bent downwards and outwards, an intermediate piece is fixedly arranged in the shell, the intermediate piece comprises an intermediate shell (6) with a containing groove (5) and an intermediate plate (7) for blocking the containing groove (5), the intermediate shell (6) is arranged in the lower shell (2), an annular concave groove is formed in the lower side face of the intermediate plate (7), an annular gasket (57) is arranged in the annular concave groove, the annular elastic sheet (55) is elastically abutted against the lower side face of the annular gasket (57), when the output gear (11) rotates, the annular elastic sheet (55) drives the annular elastic sheet to rotate, and pushes the output shaft (4) to rotate, and the output shaft (4) rotates upwards, and is matched with the output shaft (4) to move upwards, and the output shaft (4) rotates, the output gear (11) is pushed to move upwards, the annular elastic piece (55) is extruded to deform to have acting force for pushing the output gear (11) to move towards the valve rod direction of the straight-travel stop valve, a first annular notch (60) is formed in the middle plate (7), in the upward moving process of the output gear (11), a fixed point (18) is located in the first annular notch (60), the end face of the gear column (12) abuts against the travel gear (21) to push the travel gear (21) to move up and down, an annular bulge is formed in the side face of the travel gear (21), the annular bulge is opposite to the micro switch (23), and when the output gear (11) moves upwards to push the travel gear (21), the annular bulge contacts and controls the switch state of the micro switch (23).
  2. 2. The manual and electric actuator of claim 1, wherein the housing comprises an upper housing (1) and a lower housing (2) which are fastened and fixed with each other, the manual member is arranged outside the upper housing (1), an external connecting member (3) is further arranged on the lower housing (2), and the external connecting member (3) passes through the lower housing (2) to be fastened and fixed with the intermediate member.
  3. 3. The manual and electric actuator according to claim 2 is characterized in that a circuit board (19) is arranged above the middle plate (7), the circuit board (19) is connected with the middle plate (7) through a plurality of fixing columns (20), the stroke gear (21) is arranged between the middle plate (7) and the circuit board (19), the stroke gear (21) is meshed with the first outer gear ring (14), and the output gear (11) rotates to drive the stroke gear (21) to rotate.
  4. 4. The manual and electric actuator according to claim 3 is characterized in that two ends of the stroke gear (21) are provided with stroke gear (21) shafts, the lower ends of the stroke gear (21) shafts are rotatably connected with the middle plate (7), the upper ends of the stroke gear (21) shafts penetrate through the circuit board (19) and are rotatably connected with the inner wall of the upper shell (1), the micro-switches (23) are arranged on the lower surface of the circuit board (19) and are opposite to the annular protrusions, and potentiometers (25) used for calculating angular strokes are arranged on the circuit board (19).
  5. 5. The manual and electric actuator according to claim 4, wherein an intermediate spring (58) is arranged between the intermediate plate (7) and the circuit board (19), a fulcrum (59) for keeping the stroke gear (21) balanced is further arranged on the intermediate plate (7), and the intermediate spring (58) is sleeved on the shaft of the stroke gear (21).
  6. 6. The manual and electric actuator according to claim 5, wherein a gap is formed between the upper end of the output shaft (4) and the gear column (12), and the abutting ball (17) elastically abuts against the upper end of the output shaft (4) to prevent the output shaft (4) from being locked with the gear column (12) after rotating and screwing.
  7. 7. The manual and electric actuator according to claim 6, wherein the manual part comprises a manual knob (26) and a rotation indication disc (27) arranged on the periphery of the manual knob (26), the upper shell (1) is provided with a circular groove (28) matched with the rotation indication disc (27), a circular hole (29) is formed in the middle of the circular groove (28), the manual knob (26) is in transmission connection with a connecting column (30), the connecting column (30) passes through the circular hole (29) to be in transmission connection with a gear column (12), and the connecting column (30) is in transmission connection with the rotation indication disc (27).
  8. 8. The manual and electric actuator according to claim 7, wherein the lower end of the connecting column (30) is in plug-in engagement with the second outer gear ring (15), a third outer gear ring (31) is arranged at the upper end of the connecting column (30), a plug-in column (32) is arranged above the third outer gear ring (31), a first through hole and a second through hole are arranged in the plug-in column (32), the diameter of the first through hole is smaller than that of the second through hole, the first through hole is located below the second through hole, the manual knob (26) comprises a plug-in pipe (33) matched with the plug-in column (32), a plug-in rod (34) is arranged in the plug-in pipe (33), a first annular gear (35) is arranged inside the plug-in pipe (33), and the plug-in rod (34) is matched with the diameter of the first through hole.
  9. 9. The manual and electric actuator according to claim 8, wherein a supporting spring (37) is arranged in the second through hole, the inserting rod (34) is arranged in the supporting spring (37), the first annular gear (35) is matched with the third outer annular gear (31), the first annular gear (35) is separated from the third outer annular gear (31) under the supporting force of the supporting spring (37), the rotation indicating disc (27) is arranged in a ring shape, the edge of the manual knob (26) is limited, and the manual knob (26) is prevented from being separated from the rotation indicating disc (27) under the acting force of the supporting spring (37).
  10. 10. The manual and electric actuator according to claim 9, wherein the rotation indicating disc (27) comprises a limiting ring (38) and a second annular gear (39) arranged below the limiting ring (38), the second annular gear (39) is in transmission connection with a third outer annular gear (31) through an intermediate gear (40), an intermediate column (41) is arranged in the circular groove (28), the intermediate column (41) is inserted into the intermediate gear (40), and the intermediate gear (40) is meshed with the lower end of the third outer annular gear (31).
  11. 11. The manual and electric actuator according to claim 10, wherein an annular disc (42) is arranged between the lower end of the connecting column (30) and the third outer gear ring (31), a sealing rubber ring (43) is arranged between the annular disc (42) and the edge of the circular hole (29), and the sealing rubber ring (43) seals gaps between the edge of the circular hole (29) and the connecting column (30).
  12. 12. The manual and electric actuator according to claim 11, wherein the surface of the upper shell (1) at the edge of the circular groove (28) is provided with scales, the rotary indicating disc (27) is provided with indicating needles, and the indicating needles after the rotary indicating disc (27) is rotated are used for indicating the scales after the rotary indicating.
  13. 13. The manual and electric actuator according to claim 2 or 12, wherein the external connecting piece (3) is rotatably connected with a connecting nut (44), the connecting nut (44) is in threaded connection with a straight-travel stop valve, the section of the lower end of the output shaft (4) is of a triangular structure, a triangular through hole (45) which is convenient for the lower end of the output shaft (4) to pass through and limits the output shaft (4) is arranged in the middle shell (6), and the lower end of the output shaft (4) is opposite to a valve rod of the straight-travel stop valve.
  14. 14. The manual and electric actuator according to claim 13, wherein a plurality of fan-shaped holes (46) are formed in the periphery of the triangular through hole (45), the external connecting piece (3) comprises a body tube (47) which is arranged in a hollow mode, a buckling plate (48) is arranged at one end of the body tube (47), a limiting circular ring (49) is arranged at the other end of the body tube, the fan-shaped holes (46) are matched with the two buckling plates (48), the buckling plate (48) is arc-shaped, barbs (50) are arranged at the end portions of the buckling plate, and the external connecting piece (3) further comprises a clamping ring (56) which is arranged between the two buckling plates (48).
  15. 15. The manual and electric actuator of claim 14, wherein the limiting ring (49) axially limits the connecting nut (44), an external thread is arranged on the straight-travel stop valve, a limiting inner ring (51) matched with the limiting ring (49) is arranged on the connecting thread, the limiting inner ring and the limiting ring (49) are mutually limited, and the connecting nut (44) is in threaded connection with the external thread on the straight-travel stop valve, so that the lower end of the output shaft (4) is opposite to a valve rod of the straight-travel stop valve.

Description

Manual electric actuator Technical Field The present invention relates to an actuator, and more particularly, to a manual and electric actuator. Background Actuators are an essential component of an automatic control system. The function of the device is to receive the control signal from 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 can be divided into three categories of pneumatic, hydraulic and electric according to the energy form. The actuator is used for controlling the opening and closing of the valve, the valve is various in variety, and the opening and closing of the straight-travel stop valve can be controlled through the actuator. The opening and closing of the present actuator control straight-stroke stop valve is controlled through the output shaft, the output shaft is controlled to rotate by the actuator, the rotating power can be manual power or electric power, but the output shaft can be blocked in the rotating process, so that the actuator is difficult to use, the electric power can not be started and closed through an internal structure, such as a stroke gear, and the actuator can not be connected with straight-stroke stop valves with different specifications, so that the application range is not wide. Disclosure of Invention Aiming at the defects in the prior art, the invention provides the manual electric actuator which has the beneficial effects of controlling the opening and closing of the straight-travel stop valve, along with wide application range, convenient operation, preventing the output shaft from being blocked and automatically opening and closing the motor. The manual electric actuator comprises a shell and a driving element arranged in the shell, and is characterized in that the driving element comprises an electric driving piece arranged in the shell and a manual piece arranged outside the shell, the driving element further comprises an output shaft penetrating through an external connecting piece and connected with an external valve body, the output gear comprises a gear column and a gear disc arranged on the outer side of the gear column, a first external gear ring and a second external gear ring are arranged on the gear column above the gear column, the gear column is hollow, an internal thread is arranged in the gear column, the upper end of the output shaft is provided with an external thread which is in threaded connection with the internal thread of the gear column, the upper end of the gear column is in threaded connection with a screw, an abutting spring is arranged below the screw, an abutting ball is arranged below the abutting spring, four fixed points are arranged between the gear disc and the gear column, a ring-shaped elastic piece is arranged on the side face of the gear disc, the upper edge of the ring-shaped horn is bent, the upper edge of the ring-shaped elastic piece is bent, the ring-shaped elastic piece is arranged on the ring-shaped elastic piece and is in a concave groove which is in a downward direction, and is in a downward rotation manner, and is in a downward direction matched with the ring-shaped elastic groove, when the ring-shaped elastic piece is arranged on the ring-shaped elastic piece, and the ring-shaped elastic piece is arranged on the side, and the elastic piece when the ring-shaped elastic piece is rotated, the output gear is pushed to move upwards, the annular elastic piece is extruded to deform to have acting force for pushing the output gear to move towards the valve rod direction of the straight-travel stop valve, a first annular notch is formed in the middle plate, a fixed point is located in the first annular notch in the upward moving process of the output gear, the end face of the gear column is propped against the travel gear to push the travel gear to move up and down, an annular bulge is arranged on the side face of the travel gear, the annular bulge is opposite to the micro switch, and when the output gear moves upwards to push the travel gear to move, the annular bulge contacts and controls the on-off state of the micro switch. The electric driving device is further arranged in the shell, the shell comprises an upper shell and a lower shell which are fastened and fixed mutually, the manual part is arranged outside the upper shell, an external connecting part is further arranged on the lower shell, the external connecting part penetrates through the lower shell to be fastened and fixed with the middle part, the middle part comprises a middle shell with a containing groove and a middle plate for shielding the containing groove, the middle shell is arranged in the lower shell, the electric driving part comprises a motor arranged outside the middle shell, a motor shaft of the motor penetrates through the middle shell to be connected with a gear assembly in the containing groove, and the gear assembly drives an