CN211902949U - Anti-load and anti-impact output structure of electric rotary actuator - Google Patents
Anti-load and anti-impact output structure of electric rotary actuator Download PDFInfo
- Publication number
- CN211902949U CN211902949U CN202020495240.4U CN202020495240U CN211902949U CN 211902949 U CN211902949 U CN 211902949U CN 202020495240 U CN202020495240 U CN 202020495240U CN 211902949 U CN211902949 U CN 211902949U
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- output shaft
- electric
- side spring
- spring seat
- connecting rod
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Abstract
The utility model discloses a load-reverse impact prevention output structure of an electric rotary actuator, which comprises a fixed wheel arranged on an output shaft of the electric rotary actuator, wherein a connecting lever is movably sleeved on one side of the fixed wheel away from the electric actuator on the output shaft, the connecting lever comprises an annular connecting part and a cantilever-shaped connecting rod part perpendicular to the axis of the output shaft, the outer end of the connecting rod part is provided with a connecting hole, the connecting rod part is articulated with a connecting rod through the connecting hole, the end part of the connecting rod is articulated with one end of a driving part arranged on a rotating shaft of a driven facility, which is far away from the rotating shaft, and a plurality of meshing teeth are circumferentially and evenly distributed on one side end; the output shaft is provided with a connecting thread at one end far away from the electric actuating mechanism, an inner side spring seat is sleeved on the output shaft, an adjusting side spring seat is movably arranged on the output shaft, a pressure spring is sleeved between the inner side spring seat and the adjusting side spring seat on the output shaft, and the output shaft is connected with an adjusting nut which adjusts the position of the adjusting side spring seat through the thread so that the pressure spring can generate enough pressure to compress the crank arm on the fixed wheel when the electric actuating mechanism normally works.
Description
Technical Field
The utility model relates to an electric rotary actuator prevents load anti-impact output structure.
Background
In the production and operation process of a thermal power plant, boiler detonation sometimes occurs. The impact of the detonation can cause destructive damage to the associated equipment.
In the event of a detonation within the boiler, the damper flap may momentarily change position under the impact of the detonation. Resulting in damage to the control links and actuators. The connecting rod is deformed, the mechanical part of the electric actuating structure is damaged, and the actuating mechanism can be separated from the base seriously.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided is a load reverse impact prevention output structure of an electric rotary actuator.
For solving the technical problem, the utility model discloses the technical scheme who adopts does:
the anti-load reverse impact output structure of the electric rotary actuator comprises a fixed wheel which is arranged on an output shaft of the electric actuator and connected with the output shaft through a connecting key, a crank arm is movably sleeved on one side of the fixed wheel, which is far away from the electric actuator, on the output shaft, the crank arm comprises an annular connecting part and a cantilever-shaped connecting rod part which is perpendicular to the axis of the output shaft, a connecting hole is formed in the outer end of the connecting rod part, a connecting rod is hinged to the connecting rod part through the connecting hole, the end part of the connecting rod is hinged to one end, which is far away from a rotating shaft, of a driving part arranged on a rotating shaft of a driven facility; one end that electric actuator was kept away from to the output shaft is equipped with connecting thread, one side cover that electric actuator was kept away from at the protecting against shock turning arm on the output shaft is equipped with inboard spring holder, one side activity that electric actuator was kept away from at the inboard spring holder on the output shaft is equipped with adjustment side spring holder, the cover is equipped with pressure spring between inboard spring holder and adjustment side spring holder on the output shaft, there is adjustment side spring holder position in one side that electric actuator was kept away from at adjustment side spring holder on the output shaft through threaded connection so that pressure spring produces enough pressure and compresses tightly the turning arm adjusting nut on the tight pulley when electric actuator normally worked.
Preferably, the end of the output shaft is provided with a radial through hole, and a limit pin is detachably arranged in the radial through hole in a penetrating manner.
As a preferred scheme, a gland is sleeved on the output shaft between the crank arm and the inner side spring seat, a connecting ring embedded in the gland is arranged on the inner side spring seat, and the gland is connected with the crank arm through two connecting bolts.
As a preferred scheme, a positioning boss is arranged on the fixed wheel, at least one radial hole is arranged on the positioning boss, and a locking screw for compressing the output shaft is arranged in the radial hole.
The utility model has the advantages that:
this structure utilizes pressure spring to compress tightly the turning arm on the tight pulley through rotating inboard spring holder so that pressure spring produces enough pressure when electric actuator normally works, break away from with the tight pulley when the turning arm receives to be greater than the required pressure of normal work and do idle rotation, thereby the counterattack that produces when preventing boiler detonation is to the damage of electric actuator and turning arm.
Because the end part of the output shaft is provided with the radial through hole, the limiting pin is detachably arranged in the radial through hole in a penetrating way, and the inner side spring seat and the pressure spring can be prevented from being separated from the output shaft.
Because the gland is sleeved between the crank arm and the inner side spring seat on the output shaft, the connecting ring embedded into the gland is arranged on the inner side spring seat, and the gland is connected with the crank arm through two connecting bolts so as to be convenient for installation and positioning of the inner side spring seat.
Because the fixed wheel is provided with the positioning boss, the positioning boss is provided with at least one radial hole, and the radial hole is internally provided with the locking screw for compressing the output shaft, the connection between the fixed wheel and the output shaft is more reliable.
Drawings
Fig. 1 is a schematic structural view of the present invention (the connecting rod and the driving member are omitted).
Fig. 2 is a schematic view of the positions of the connecting lever, the connecting rod and the driving member of the present invention.
In the figure: 1. the electric actuator comprises an electric actuator, 2 an output shaft, 3 a fixed wheel, 4 a crank arm, 5 an inner spring seat, 6 an adjusting side spring seat, 7 a pressure spring, 8 an adjusting nut, 9 a limiting pin, 10 a gland, 11 a locking screw, 12 a connecting rod and 13 a driving piece.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 1-2, the structure for preventing load reverse impact output of an electric rotary actuator comprises a fixed wheel 3 which is arranged on an output shaft 2 of the electric rotary actuator 1 and connected through a connecting key, wherein a positioning boss is arranged on the fixed wheel 3, at least one radial hole is arranged on the positioning boss, and a locking screw 11 for compressing the output shaft 2 is arranged in the radial hole. The movable sleeve is equipped with connecting lever 4 on one side of keeping away from electric actuator 1 at tight pulley 3 on output shaft 2, and connecting lever 4 includes annular connecting portion and the cantilever form connecting rod portion of perpendicular to 2 axes of output shaft, and connecting rod portion outer end is equipped with the connecting hole, and it has connecting rod 12 to articulate through the connecting hole in the connecting rod portion, and connecting rod 12 tip is articulated mutually with the pivot one end of keeping away from by the epaxial driving piece 13 of driven facility pivot. A plurality of meshing teeth are uniformly distributed on the end surface of one side of the annular connecting part, which is opposite to the fixed wheel 3, in the circumferential direction;
one end of the output shaft 2, which is far away from the electric actuating mechanism 1, is provided with connecting threads, one side of the output shaft 2, which is far away from the electric actuating mechanism 1 on the impact-proof crank arm 4, is sleeved with an inner side spring seat 5, and one side of the output shaft 2, which is far away from the electric actuating mechanism 1 on the inner side spring seat 5, is movably provided with an adjusting side spring seat 6. A pressure spring 7 is sleeved between the inner spring seat 5 and the adjusting side spring seat 6 on the output shaft 2, and one side of the adjusting side spring seat 6, which is far away from the electric actuating mechanism 1, on the output shaft 2 is connected with an adjusting side spring seat 6 through threads, so that the pressure spring 7 generates enough pressure to press the crank arm 4 onto the adjusting nut 8 on the fixed wheel 3 when the electric actuating mechanism 1 works normally.
The output shaft 2 is sleeved with a gland 10 between the crank arm 4 and the inner side spring seat 5, the inner side spring seat 5 is provided with a connecting ring embedded into the gland 10, and the gland 10 is connected with the crank arm 4 through two connecting bolts. The end part of the output shaft 2 is provided with a radial through hole, and a limit pin 9 is detachably arranged in the radial through hole in a penetrating way.
When the mechanism is used on a boiler air door, the pressure of the pressure spring 7 is adjusted by using the adjusting nut 8 according to the actual requirement of field equipment. For example: the maximum torque required by the on-site air door is 1000 Nm, and the adjusting nut 8 is adjusted to ensure that the crank arm 4 is separated from the fixed wheel 3 to automatically rotate in a reactive manner when the stress is more than or equal to 1000 Nm; if the position of the adjusting nut 8 is changed after being impacted, new positioning is needed.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, and are not intended to limit the present invention; it should be noted that, for those skilled in the art, without departing from the inventive concept, several changes and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. Electric rotary actuator's anti-impact output structure of load that prevents, its characterized in that: the device comprises a fixed wheel which is arranged on an output shaft of an electric actuating mechanism and connected through a connecting key, wherein a crank arm is movably sleeved on one side of the fixed wheel, which is far away from the electric actuating mechanism, on the output shaft; one end that electric actuator was kept away from to the output shaft is equipped with connecting thread, one side cover that electric actuator was kept away from at the protecting against shock turning arm on the output shaft is equipped with inboard spring holder, one side activity that electric actuator was kept away from at the inboard spring holder on the output shaft is equipped with adjustment side spring holder, the cover is equipped with pressure spring between inboard spring holder and adjustment side spring holder on the output shaft, there is adjustment side spring holder position in one side that electric actuator was kept away from at adjustment side spring holder on the output shaft through threaded connection so that pressure spring produces enough pressure and compresses tightly the turning arm adjusting nut on the tight pulley when electric actuator normally worked.
2. The structure of preventing a load reverse-impact output of an electric rotary actuator according to claim 1, wherein: the output shaft end is equipped with radial through-hole, and the spacer pin is worn to be equipped with in the radial through-hole detachably.
3. The structure of preventing a load reverse-impact output of an electric rotary actuator according to claim 2, wherein: the output shaft is sleeved with a gland between the crank arm and the inner side spring seat, the inner side spring seat is provided with a connecting ring embedded into the gland, and the gland is connected with the crank arm through two connecting bolts.
4. A load reverse-impact prevention output structure of an electric rotary actuator according to claim 3, wherein: the fixed wheel is provided with a positioning boss, the positioning boss is provided with at least one radial hole, and a locking screw for compressing the output shaft is arranged in the radial hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020495240.4U CN211902949U (en) | 2020-04-07 | 2020-04-07 | Anti-load and anti-impact output structure of electric rotary actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020495240.4U CN211902949U (en) | 2020-04-07 | 2020-04-07 | Anti-load and anti-impact output structure of electric rotary actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211902949U true CN211902949U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020495240.4U Active CN211902949U (en) | 2020-04-07 | 2020-04-07 | Anti-load and anti-impact output structure of electric rotary actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211902949U (en) |
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2020
- 2020-04-07 CN CN202020495240.4U patent/CN211902949U/en active Active
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