Anti-overloading adjusting type electric actuator

Abstract

The invention discloses an anti-overloading adjusting type electric actuator, and relates to the technical field of electromechanical control. The actuator comprises a main body shell and an anti-overloading adjusting type electric actuator, wherein the main body shell comprises a mounting block arranged on the main body shell; the output mechanism comprises an output rod which penetrates through the mounting block and is slidably connected with the inner wall of the mounting block, a movable rack is fixedly mounted on the surface of the output rod and is meshed with a rotating gear, the rotating gear is rotatably connected with the inner wall of the mounting block, and a linkage turbine is coaxially and fixedly mounted on the surface of the rotating gear; the linkage turbine and the rotating worm form worm and gear transmission, and the rotating worm is rotationally connected with the inner wall of the mounting block; the driving mechanism is used for driving the output rod to transversely move; the back pressure mechanism is matched with the air pressure mechanism to stop the transverse movement of the output rod; under the combined action of the back pressure mechanism and the air pressure mechanism, the transmission action of the driving mechanism on the output mechanism is cut off, at the moment, the forward transmission action of the driving mechanism is changed into idling, and therefore the purpose of preventing overload and protecting the electric actuator is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electromechanical control, and in particular to an overload-proof regulating electric actuator. Background Art

[0002] At present, with the development of science and technology, electromechanical control can be seen everywhere in people's lives. The electromechanical control technology has increased the convenience of using some equipment. The most common use of electromechanical control is the electric actuator, which transmits instructions to the motor through the sensor, and then completes the movement of the output end of the electric actuator through mechanical transmission, thereby completing the restriction of another component.

[0003] Currently, when using an electric controller, the output end of the electric actuator may be restricted due to misalignment of the restricted end during movement, resulting in overload of the output end. This may cause the internal motor of the electric actuator to overload and become damaged by heat. The existing overload protection devices on the market all use sensors to protect the electric actuator from overload. The sensitivity of such devices is unstable and their lifespan is short, and they are prone to erroneous feedback.

[0004] Based on this, the present invention designs an overload-proof adjustable electric actuator to solve the above-mentioned problem. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide an overload-proof adjustable electric actuator, aiming to solve the technical problems existing in the prior art mentioned in the background technology.

[0006] The embodiment of the present invention is implemented as follows: an anti-overload regulating electric actuator, the actuator comprising:

[0007] Main body shell: including a mounting block arranged on the main body shell;

[0008] Output mechanism: comprising an output rod that passes through the mounting block and is slidably connected to the inner wall of the mounting block, a movable rack is fixedly mounted on the surface of the output rod, the movable rack is meshed with a rotating gear, the rotating gear is rotationally connected to the inner wall of the mounting block, a linkage turbine is coaxially fixedly mounted on the surface of the rotating gear, the linkage turbine and the rotating worm form a worm gear transmission, and the rotating worm is rotationally connected to the inner wall of the mounting block;

[0009] Driving mechanism: used to drive the output rod to move horizontally;

[0010] Back pressure mechanism: cooperates with the air pressure mechanism to stop the lateral movement of the output rod.

[0011] Furthermore, the driving mechanism includes a driving motor fixedly mounted on the inner wall of the mounting block, the output end of the driving motor passes through the mounting block and is rotatably connected to the mounting block, the output end of the driving motor is fixedly mounted with a first bevel gear group, the other end of the first bevel gear group is fixedly mounted with a first arc gear, the interiors of the first bevel gear group and the first arc gear are both penetrated by a support rod and are coaxially rotatably connected to the support rod, the first arc gear is meshed with the second arc gear, the interior of the second arc gear passes through a support rod and is slidably connected to the support rod, the inner wall of the second arc gear is slidably connected to the second bevel gear group, the second bevel gear group is coaxially rotatably connected to the surface of the support rod, the support rod is fixedly mounted on the inner wall of the mounting block, and the other end of the second bevel gear group is coaxially fixedly connected to the rotating worm.

[0012] Furthermore, the back-pressure mechanism comprises a back-pressure rod slidably connected to the inner wall of the output rod, and the surface of the back-pressure rod is connected to the inner wall of the output rod via a back-pressure spring.

[0013] Furthermore, the pneumatic mechanism includes a pressure cylinder fixedly connected to the surface of the output rod, a pressure piston is slidably connected inside the pressure cylinder, the pressure piston is fixedly installed on the surface of the counter-pressure rod, the other end of the pressure cylinder is connected to a movable hose, the end of the movable hose away from the pressure cylinder is connected to a connecting pipe, the connecting pipe is fixedly installed on the inner wall of the mounting block, the end of the connecting pipe away from the movable hose is connected to the pressure cylinder, and the pressure cylinder, the mobile hose, the connecting pipe and the inside of the pressure cylinder are connected, the pressure cylinder is slidably connected to the pressure piston, a linkage block is fixedly installed on the surface of the pressure piston, the end of the linkage block away from the pressure piston is rotatably connected to the second arc gear through a rotating ring, and the inner wall of the second arc gear is connected to the second bevel gear set through a reset spring.

[0014] Furthermore, the actuator also includes an adjusting mechanism, which includes an adjusting cylinder coaxially fixedly mounted on the surface of the second arc-shaped gear, a rotating ring gear is rotatably mounted on the inner wall of the adjusting cylinder, a driving gear matching the rotating ring gear is fixedly mounted on the surface of the first bevel gear group, two rotating screws are penetrated inside the rotating ring gear and are rotatably connected to the two rotating screws, a screw gear is coaxially fixedly mounted on the surface of each rotating screw, the two screw gears are meshed with the fixed ring gear, the fixed ring gear is fixedly mounted on the inner wall of the adjusting cylinder, the rotating screw and the L-shaped slider form a spiral pair transmission, the L-shaped slider is slidably connected to the rotating ring gear, a thrust rod is fixedly mounted on the surface of the L-shaped slider, and a limit block matching the thrust rod is fixedly mounted on the surface of the adjusting cylinder.

[0015] Furthermore, hard rubber is fixedly mounted on the surface of the counter-pressure rod.

[0016] Furthermore, hard rubber is fixedly installed on the contact surface of the limit block with the thrust rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention disconnects the transmission action of the drive mechanism on the output mechanism through the joint action of the back pressure mechanism and the air pressure mechanism. At this time, the forward transmission action of the drive mechanism becomes idling, thereby achieving the purpose of preventing overload and protecting the electric actuator.

[0019] 2. The present invention resets the output rod by driving the output rod to move in the opposite direction through the reverse rotation of the second arc gear, so that the output rod returns to the initial state, thereby achieving automatic and accurate reset without affecting the position of the output rod, thereby ensuring the normal use of the subsequent electric actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an overload-proof regulating electric actuator provided by an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of another viewing angle of an anti-overload regulating electric actuator of the present invention;

[0023] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0024] Figure 5 It is a cross-sectional structural schematic diagram of another viewing angle of an anti-overload regulating electric actuator of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at B;

[0026] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at C;

[0027] Figure 8 It is a schematic diagram of the installation position structure of the rotating worm of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at D.

[0029] In the accompanying drawings: 1, main body shell; 101, mounting block; 2, output mechanism; 201, output rod; 202, moving rack; 203, rotating gear; 204, linkage turbine; 205, rotating worm; 3, driving mechanism; 301, driving motor; 302, first bevel gear set; 303, first arc gear; 304, second arc gear; 305, second bevel gear set; 306, support rod; 4, back pressure mechanism; 401, back pressure rod; 402, back pressure spring; 5 , pneumatic mechanism; 501, pressure piston; 502, pressure cylinder; 503, moving hose; 504, connecting pipe; 505, pressure cylinder; 506, pressure piston; 507, linkage block; 508, return spring; 6, adjusting mechanism; 601, adjusting cylinder; 602, rotating ring gear; 603, driving gear; 604, rotating screw; 605, screw gear; 606, fixed ring gear; 607, L-shaped slider; 608, thrust rod; 609, limit block. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, an overload-proof regulating electric actuator is provided, the actuator comprising:

[0033] Main body shell 1: including a mounting block 101 arranged on the main body shell 1;

[0034] Output mechanism 2: includes an output rod 201 that passes through the mounting block 101 and is slidably connected to the inner wall of the mounting block 101, a movable rack 202 is fixedly installed on the surface of the output rod 201, the movable rack 202 is meshed with a rotating gear 203, the rotating gear 203 is rotationally connected to the inner wall of the mounting block 101, a linkage turbine 204 is coaxially fixedly installed on the surface of the rotating gear 203, the linkage turbine 204 and the rotating worm 205 form a worm gear transmission, and the rotating worm 205 is rotationally connected to the inner wall of the mounting block 101;

[0035] Driving mechanism 3: used to drive the output rod 201 to move horizontally;

[0036] The counter-pressure mechanism 4 cooperates with the air pressure mechanism 5 to stop the lateral movement of the output rod 201 .

[0037] In practical application of the embodiment of the present invention, when the electric actuator receives a feedback signal from the outside, such as Figure 2 As shown, at this time, the rotating worm 205 is driven to rotate by the action of the driving mechanism 3, and the rotation of the rotating worm 205 drives the rotating gear 203 to rotate through the transmission action of the worm gear, and then drives the output rod 201 to move horizontally through the meshing action of the gear rack. At this time, when the external matching parts are misaligned, the reaction force of the external parts causes the back-pressure mechanism 4 to move in the opposite direction. At this time, the transmission action of the driving mechanism 3 on the output mechanism 2 is disconnected by the joint action of the back-pressure mechanism 4 and the pneumatic mechanism 5. At this time, the forward transmission action of the driving mechanism 3 becomes idling, thereby achieving the purpose of preventing overload protection of the electric actuator.

[0038] like Figure 2 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, the driving mechanism 3 includes a driving motor 301 fixedly mounted on the inner wall of the mounting block 101, the output end of the driving motor 301 passes through the mounting block 101 and is rotatably connected to the mounting block 101, the output end of the driving motor 301 is fixedly mounted with a first bevel gear set 302, the other end of the first bevel gear set 302 is fixedly mounted with a first arc gear 303, the first bevel gear set 302 and the first arc gear 303 are both penetrated by a support rod 306 and connected to the support rod 306. The support rod 306 is coaxially rotatably connected, the first arc gear 303 is meshed with the second arc gear 304, the interior of the second arc gear 304 is penetrated by a support rod 306 and is slidably connected to the support rod 306, the inner wall of the second arc gear 304 is slidably connected to the second bevel gear set 305, the second bevel gear set 305 is coaxially rotatably connected to the surface of the support rod 306, the support rod 306 is fixedly mounted on the inner wall of the mounting block 101, and the other end of the second bevel gear set 305 is coaxially fixedly connected to the rotating worm 205.

[0039] In actual application of the embodiment of the present invention, when the electric actuator is working, the drive motor 301 is operated by the external feedback signal, such as Figure 2 As shown, the driving motor 301 drives the first bevel gear set 302 to rotate, as shown in FIG. Figure 6As shown, the second arc gear 304 is driven to rotate through the coaxial transmission and meshing action of the gears. The rotation of the second arc gear 304 drives the rotating worm 205 to rotate through the action of the second bevel gear set 305, thereby driving the output rod 201 to move laterally. When an abnormality occurs, the first arc gear 303 and the second arc gear 304 are disengaged through the action of the back pressure mechanism 4 and the pneumatic mechanism 5, thereby achieving the purpose of preventing overload.

[0040] like Figure 3 and Figure 4 As shown, as another preferred embodiment of the present invention, the back-pressure mechanism 4 includes a back-pressure rod 401 slidably connected to the inner wall of the output rod 201 , and the surface of the back-pressure rod 401 is connected to the inner wall of the output rod 201 through a back-pressure spring 402 .

[0041] In actual application of the embodiment of the present invention, when the output rod 201 moves horizontally, when the external parts are misaligned, the counter-pressure rod 401 contacts the external parts. As the output rod 201 continues to move, under the reaction of the external parts, Figure 3 and Figure 4 As shown, from Figure 4 When viewed from the front direction, the counter-pressure rod 401 moves to the left, and then the first arc gear 303 and the second arc gear 304 are disengaged through cooperation with the air pressure mechanism 5, thereby achieving the purpose of preventing overload.

[0042] like Figure 3 and Figure 6 As shown, as another preferred embodiment of the present invention, the pneumatic mechanism 5 includes a pressure cylinder 502 fixedly connected to the surface of the output rod 201, the pressure cylinder 502 is slidably connected to the inside of the pressure cylinder 502 with a pressure piston 501, the pressure piston 501 is fixedly mounted on the surface of the counter-pressure rod 401, the other end of the pressure cylinder 502 is connected to a mobile hose 503, the end of the mobile hose 503 away from the pressure cylinder 502 is connected to a connecting pipe 504, the connecting pipe 504 is fixedly mounted on the inner wall of the mounting block 101, and the connecting pipe 504 is far away from the pressure cylinder 502. One end of the movable hose 503 is connected to the pressurized gas cylinder 505, and the pressure gas cylinder 502, the movable hose 503, the connecting pipe 504 and the pressurized gas cylinder 505 are internally connected. The pressurized gas cylinder 505 is internally slidably connected with a pressurized piston 506, and a linkage block 507 is fixedly installed on the surface of the pressurized piston 506. The end of the linkage block 507 away from the pressurized piston 506 is rotatably connected to the second arc gear 304 through a rotating ring, and the inner wall of the second arc gear 304 is connected to the second bevel gear set 305 through a reset spring 508.

[0043] In actual application of the embodiment of the present invention, when the counter-pressure rod 401 moves to the left, Figure 3 As shown, from Figure 3When viewed from the front, the pressure piston 501 is driven to move to the left to squeeze the air in the pressure cylinder 502, and the air enters the pressurized cylinder 505 through the airflow transmission effect of the mobile hose 503 and the connecting pipe 504. It should be noted here that since the output rod 201 will drive the pressure cylinder 502 to move synchronously when it moves, the mobile hose 503 is set as a hose. When the pressure cylinder 502 moves, the appearance of the mobile hose 503 is changed to avoid changes in the internal air volume and affecting the airflow transmission effect. Figure 6 As shown, from Figure 6 When viewed from the front direction, the airflow drives the compressed piston 506 to move rightward, and then drives the second arc gear 304 to move rightward through the linkage block 507. The second arc gear 304 moves rightward and disengages from the first arc gear 303, thereby achieving the purpose of preventing overload.

[0044] like Figure 7 , Figure 8 and Fig. 9 As shown, as another preferred embodiment of the present invention, the actuator further includes an adjusting mechanism 6, which includes an adjusting cylinder 601 coaxially fixedly mounted on the surface of the second arc gear 304, a rotating ring gear 602 is rotatably mounted on the inner wall of the adjusting cylinder 601, a driving gear 603 matching the rotating ring gear 602 is fixedly mounted on the surface of the first bevel gear set 302, and the interior of the rotating ring gear 602 is penetrated by two rotating screws 604 and is rotatably connected to the two rotating screws 604, each rotating The surface of the screw rod 604 is coaxially fixed with a screw gear 605, and the two screw gears 605 are meshed with the fixed gear ring 606. The fixed gear ring 606 is fixedly installed on the inner wall of the adjusting cylinder 601. The rotating screw rod 604 and the L-shaped slider 607 form a spiral pair transmission. The L-shaped slider 607 is slidingly connected with the rotating gear ring 602. A thrust rod 608 is fixedly installed on the surface of the L-shaped slider 607, and a limit block 609 that cooperates with the thrust rod 608 is fixedly installed on the surface of the adjusting cylinder 601.

[0045] In actual application of the embodiment of the present invention, when the first arc gear 303 and the second arc gear 304 are out of meshing, Figure 7 As shown, from Figure 7From the front view direction, at this time, the movement of the second arc gear 304 drives the adjusting cylinder 601 to move rightward, so that the rotating ring gear 602 meshes with the driving gear 603. At this time, the continued rotation of the first arc gear 303 drives the driving gear 603 to rotate, and the meshing action of the gear ring gear drives the rotating ring gear 602 to rotate synchronously. The rotation of the rotating ring gear 602 drives the rotating screw rod 604 to revolve. Due to the meshing action of the rotating screw rod 604 and the screw gear 605, the screw gear 605 drives the rotating screw rod 604 to rotate while revolving. It should be noted here that since the linkage turbine 204 and the rotating worm 205 are worm gear transmission, this transmission mode of mechanism motion can realize self-locking on the one hand, and on the other hand, the friction force of the worm gear transmission is large, so the resistance of the worm gear is greater than the resistance of the gear meshing transmission. When the screw gear 605 rotates, the friction force of its transmission is not enough to drive the adjusting cylinder 601 to rotate, so that the rationality of the mechanism movement is achieved through the intervention of friction. At this time, the rotating screw 604 drives the L-shaped slider 607 to move left through the spiral pair transmission, so that the thrust rod 608 cannot contact the limit block 609, so that the remaining rotation distance of the motor is recorded through the movement of the thrust rod 608. When the lateral movement of the second arc gear 304 triggers the alarm feedback, the external employee resets it and the motor starts to reverse. At this time, the rotating ring gear 602 is reversed through the reversal of the first bevel gear set 302, and then the L-shaped slider 607 is moved to the right through the reversal of the rotating screw 604. When the motor completes the movement of the first arc gear 303 and the second arc gear 304 to disconnect the meshing, the thrust rod 608 returns to the initial position. Fig. 9 As shown, the thrust rod 608 contacts the limit block 609 through the revolution of the rotating ring gear 602. At this time, the thrust rod 608 drives the limit block 609 to rotate synchronously, and then drives the second arc gear 304 to reverse synchronously through the adjusting cylinder 601. Since the rotating ring gear 602 rotates synchronously with the adjusting cylinder 601, the rotating screw rod 604 no longer rotates on its own. At this time, the reversal of the second arc gear 304 drives the output rod 201 to move in the opposite direction for reset, so that the output rod 201 returns to the initial state, thereby achieving automatic and accurate reset, and will not affect the position of the output rod 201, ensuring the normal use of the electric actuator in the later stage.

[0046] like Figure 2 As shown, as another preferred embodiment of the present invention, hard rubber is fixedly installed on the surface of the counter-pressure rod 401.

[0047] In practical application, the embodiment of the present invention is as follows: Figure 2 As shown, the hard rubber provided on the counter-pressure rod 401 can prevent the counter-pressure rod 401 from scratching the parts when it contacts with external parts later.

[0048] like Fig. 9 As shown, as another preferred embodiment of the present invention, a hard rubber is fixedly installed on the contact surface of the limit block 609 with the thrust rod 608.

[0049] In actual application, the hard rubber provided on the limit block 609 can avoid extrusion loss of the limit block 609 when the limit block 609 makes hard contact with the thrust rod 608, thereby increasing the service life of the electric actuator.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-overload regulating electric actuator, characterized in that: The actuator comprises: The main body shell (1) comprises a mounting block (101) arranged on the main body shell (1); The output mechanism (2) comprises an output rod (201) which passes through the mounting block (101) and is slidably connected to the inner wall of the mounting block (101); a movable rack (202) is fixedly mounted on the surface of the output rod (201); the movable rack (202) is meshed with a rotating gear (203); the rotating gear (203) is rotationally connected to the inner wall of the mounting block (101); a linkage turbine (204) is coaxially fixedly mounted on the surface of the rotating gear (203); the linkage turbine (204) and the rotating worm (205) form a worm gear transmission; the rotating worm (205) is rotationally connected to the inner wall of the mounting block (101); Driving mechanism (3): used for driving the output rod (201) to perform lateral movement; The counter-pressure mechanism (4) cooperates with the air pressure mechanism (5) to stop the lateral movement of the output rod (201).

2. The overload-proof regulating electric actuator according to claim 1, characterized in that: The driving mechanism (3) comprises a driving motor (301) fixedly mounted on the inner wall of the mounting block (101); the output end of the driving motor (301) passes through the mounting block (101) and is rotatably connected to the mounting block (101); a first bevel gear set (302) is fixedly mounted on the output end of the driving motor (301); a first arc gear (303) is fixedly mounted on the other end of the first bevel gear set (302); a support rod (306) passes through the interior of the first bevel gear set (302) and the first arc gear (303) and is coaxial with the support rod (306). The first arc gear (303) is rotatably connected to the second arc gear (304), the interior of the second arc gear (304) is penetrated by a support rod (306) and is slidably connected to the support rod (306), the inner wall of the second arc gear (304) is slidably connected to the second bevel gear set (305), the second bevel gear set (305) is coaxially rotatably connected to the surface of the support rod (306), the support rod (306) is fixedly mounted on the inner wall of the mounting block (101), and the other end of the second bevel gear set (305) is coaxially fixedly connected to the rotating worm (205).

3. The overload-proof regulating electric actuator according to claim 2, characterized in that: The back-pressure mechanism (4) comprises a back-pressure rod (401) slidably connected to the inner wall of the output rod (201); the surface of the back-pressure rod (401) is connected to the inner wall of the output rod (201) via a back-pressure spring (402).

4. The overload-proof regulating electric actuator according to claim 3, characterized in that: The pneumatic mechanism (5) comprises a pressure cylinder (502) fixedly connected to the surface of the output rod (201), a pressure piston (501) being slidably connected inside the pressure cylinder (502), the pressure piston (501) being fixedly mounted on the surface of the counter-pressure rod (401), the other end of the pressure cylinder (502) being connected to a mobile hose (503), the end of the mobile hose (503) away from the pressure cylinder (502) being connected to a connecting pipe (504), the connecting pipe (504) being fixedly mounted on the inner wall of the mounting block (101), the connecting pipe (504) being away from the mobile hose (503) One end is connected to the pressurized gas cylinder (505), and the pressure gas cylinder (502), the movable hose (503), the connecting pipe (504) and the pressurized gas cylinder (505) are connected internally. The pressurized gas cylinder (505) is slidably connected with a pressurized piston (506) inside. A linkage block (507) is fixedly installed on the surface of the pressurized piston (506). One end of the linkage block (507) away from the pressurized piston (506) is rotatably connected to the second arc gear (304) through a rotating ring. The inner wall of the second arc gear (304) is connected to the second bevel gear set (305) through a return spring (508).

5. The overload-proof regulating electric actuator according to claim 2, characterized in that: The actuator further comprises an adjusting mechanism (6), the adjusting mechanism (6) comprising an adjusting cylinder (601) coaxially fixedly mounted on the surface of the second arc gear (304), a rotating ring gear (602) being rotatably mounted on the inner wall of the adjusting cylinder (601), a driving gear (603) matching the rotating ring gear (602) being fixedly mounted on the surface of the first bevel gear set (302), two rotating screw rods (604) running through the interior of the rotating ring gear (602) and being rotatably connected to the two rotating screw rods (604), and the surface of each rotating screw rod (604) being coaxially fixedly mounted on the inner wall of the adjusting cylinder (601), A screw gear (605) is fixedly installed on the shaft, and the two screw gears (605) are meshed with a fixed gear ring (606). The fixed gear ring (606) is fixedly installed on the inner wall of the adjustment cylinder (601). The rotating screw (604) and the L-shaped slider (607) form a spiral pair transmission. The L-shaped slider (607) is slidably connected to the rotating gear ring (602). A thrust rod (608) is fixedly installed on the surface of the L-shaped slider (607). A limit block (609) matched with the thrust rod (608) is fixedly installed on the surface of the adjustment cylinder (601).

6. The overload-proof regulating electric actuator according to claim 3, characterized in that: The surface of the counter-pressure rod (401) is fixedly mounted with hard rubber.

7. The overload-proof regulating electric actuator according to claim 5, characterized in that: A hard rubber is fixedly mounted on the contact surface of the limit block (609) with the thrust rod (608).

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