Full-protection type electric stopper actuating mechanism

Abstract

The utility model discloses a full-protection type electric stopper rod executing mechanism which comprises a fixing frame, a stopper rod and a stopper rod. The lifting frame is arranged in the fixed frame; the fixed frame and the lifting frame are combined to form a closed cavity; the linear sliding rail is arranged in the closed cavity, movably connected with the lifting frame and fixedly arranged on the inner side of the fixing frame; the sliding block is arranged in the closed cavity; one end of the sliding block is fixedly arranged on the inner wall of the lifting frame, and the other end of the sliding block is movably connected with the linear sliding rail and moves up and down along with the lifting frame. The electric cylinder mechanism is arranged on the outer side of the lifting frame; the head end and the tail end of the electric cylinder mechanism are connected with the lifting frame and the fixing frame respectively. And the manual lifting mechanism is arranged on the outer side wall of the fixed frame and is connected with the lifting frame. According to the full-protection type electric stopper executing mechanism, the linear sliding rail and the sliding block are adopted for guiding, guiding is more accurate, and the influence of human factors on guiding precision is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of stopper rod control equipment, and more specifically, to a fully protected electric stopper rod actuator. Background Art

[0002] In the metallurgical industry, the stopper rod is a refractory rod installed in the tundish of the continuous casting machine, which controls the opening and closing of the nozzle and the flow of molten steel by lifting and displacing. When the stopper rod is working, it usually cooperates with the nozzle seat brick of the tundish. The stopper rod moves up and down in a straight line driven by the electric actuator, and the flow of molten steel is changed by changing the opening and closing degree of the stopper rod and the nozzle brick of the tundish. The electric actuator is used to control the distance between the stopper rod and the nozzle of the tundish, and is an important part of the continuous casting liquid level control. It is precisely because of the correct drive of the actuator that the stopper rod can complete specific work tasks.

[0003] At present, stopper rod actuators are mainly of embedded and external types. However, both embedded and external stopper rod actuators have many problems in actual use. The electric cylinder of the embedded stopper rod actuator is embedded inside the mechanism, which makes it inconvenient to disassemble the electric cylinder. In addition, there are many guide bearings, and the gap between the guide wheel and the guide rail is adjusted by the eccentric shaft. It is difficult to adjust the gap to a suitable level. When driving the stopper rod to move, improper gap adjustment will cause the stopper rod to swing, affecting the adjustment accuracy of the actuator. For the external stopper rod actuator, its electric cylinder is installed outside the mechanism, with a complex structure, and it is difficult to install and disassemble. It uses linear bearings and guide wheels for guidance, and there is still a gap between the guide wheel lifting rod guide bar, which will also affect the adjustment accuracy of the actuator.

[0004] Therefore, how to provide a fully protected electric plug rod actuator that uses linear slide rails and sliders as guides, has more precise guidance, does not require adjustment during installation and use, and reduces the impact of human factors on the guidance accuracy. This has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a fully protected electric plug rod actuator, which uses linear slide rails and sliders as guides, which has more precise guidance and does not require adjustment during installation and use, reducing the impact of human factors on the guidance accuracy.

[0006] The technical solutions provided by this application are as follows:

[0007] The present application provides a fully protected electric stopper rod actuator, comprising: a fixed frame; a lifting frame arranged in the fixed frame; a closed chamber formed by combining the fixed frame and the lifting frame; a linear slide rail arranged in the closed chamber and movably connected to the lifting frame, the linear slide rail being fixed on the inner side of the fixed frame; a slider arranged in the closed chamber; one end of the slider is fixedly arranged on the inner wall of the lifting frame, and the other end is movably connected to the linear slide rail and moves up and down with the lifting frame; an electric cylinder mechanism arranged on the outer side of the lifting frame; the head and tail ends of the electric cylinder mechanism are respectively connected to the lifting frame and the fixed frame; a manual lifting mechanism is arranged on the outer side wall of the fixed frame and connected to the lifting frame.

[0008] Furthermore, in a preferred embodiment of the present invention, the fully protected electric stopper rod actuator further comprises: a spring buffer mechanism disposed below the lifting frame.

[0009] Furthermore, in a preferred embodiment of the present invention, the electric cylinder mechanism comprises:

[0010] A first fixing seat disposed on the outer side wall of the lifting frame;

[0011] An electric cylinder body connected to the first fixing seat;

[0012] A servo motor is arranged at the rear end of the electric cylinder body;

[0013] The second fixing seat is arranged at the bottom of the servo motor and connects the servo motor and the fixing frame.

[0014] Furthermore, in a preferred embodiment of the present invention, the fully protected electric stopper rod actuator further comprises: a U-shaped shield disposed outside the electric cylinder mechanism;

[0015] The U-shaped shield is provided with an observation window and a first handle;

[0016] The U-shaped shield is movably connected to the fixing frame and is used for sealing the electric cylinder body and the servo motor.

[0017] Furthermore, in a preferred embodiment of the present invention, the manual lifting mechanism comprises:

[0018] A bearing seat embedded in the side wall of the fixing frame;

[0019] A rotating shaft that passes through the bearing seat and is movably connected to the bearing seat;

[0020] A composite oil-free bearing disposed between the rotating shaft and the bearing seat;

[0021] A rocker disposed on the input end of the rotating shaft;

[0022] A sector gear disposed on the output end of the rotating shaft;

[0023] A rack is arranged on the lifting frame and meshes with the sector gear.

[0024] Furthermore, in a preferred embodiment of the present invention, the input end of the rotating shaft is configured to be square, and one end of the rocker is configured to be a U-shaped groove;

[0025] The square input end of the rotating shaft is engaged with the U-shaped groove;

[0026] The input end of the rotating shaft is provided with a pin shaft for connecting and fixing the rocker;

[0027] The output end of the rotating shaft is provided with a key, and the sector gear is sleeved on the output end of the rotating shaft and is engaged with the key.

[0028] Furthermore, in a preferred embodiment of the present invention, the fully protected electric stopper actuator further comprises:

[0029] A locking mechanism disposed on the side wall of the fixing frame;

[0030] A limiting mechanism is arranged on the side wall of the fixing frame.

[0031] Furthermore, in a preferred embodiment of the present invention, the locking mechanism comprises:

[0032] A third fixing seat disposed on the side wall of the fixing frame;

[0033] A rotating rod disposed in the third fixing seat;

[0034] The rotating rod passes through the third fixing seat and performs a rotational ascending or rotational descending motion in the third fixing seat;

[0035] A second handle disposed at the head end of the rotating rod;

[0036] A locking block is arranged at the rear end of the rotating rod and is used to abut against the lifting frame for braking.

[0037] Furthermore, in a preferred embodiment of the present invention, the limiting mechanism is specifically a limiting screw; a limiting long hole is provided on the side plate of the lifting frame;

[0038] One end of the limit screw passes through the fixing frame and extends into the limit long hole, so as to limit the range of up and down movement of the lifting frame.

[0039] Furthermore, in a preferred embodiment of the present invention, the fully protected electric stopper actuator further comprises: a lifting position indicating mechanism disposed on a side wall of the fixing frame.

[0040] The utility model provides a fully protected electric stopper rod actuator, comprising: a fixed frame; a lifting frame arranged in the fixed frame; a closed chamber formed by the combination of the fixed frame and the lifting frame; a linear slide rail arranged in the closed chamber and movably connected to the lifting frame; the linear slide rail is fixedly arranged on the inner side of the fixed frame; a slider arranged in the closed chamber; one end of the slider is fixedly arranged on the inner wall of the lifting frame, and the other end is movably connected to the linear slide rail, and moves up and down with the lifting frame; an electric cylinder mechanism arranged on the outer side of the lifting frame; the head and tail ends of the electric cylinder mechanism are respectively connected to the lifting frame and the fixed frame; a manual lifting mechanism is arranged on the outer side wall of the fixed frame and connected to the lifting frame. In the fully protected electric stopper rod actuator, its main structure is composed of a fixed frame, a lifting frame, a linear slide rail, a slider, an electric cylinder mechanism and a manual lifting mechanism. Compared with the prior art, the technical solution provided by the utility model adopts a linear slide rail and a slider as a guide, and the guide is more accurate, and no adjustment is required during installation and use, which reduces the influence of human factors on the guide accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A three-dimensional schematic diagram of the fully protected electric stopper actuator provided in an embodiment of the utility model Figure 1 ;

[0043] Figure 2 A three-dimensional schematic diagram of the fully protected electric stopper actuator provided in an embodiment of the utility model Figure 2 ;

[0044] Figure 3 A schematic diagram of the internal structure of the fully protected electric stopper actuator provided in an embodiment of the utility model;

[0045] Figure 4 A cross-sectional view of the fully protected electric stopper actuator provided in an embodiment of the utility model;

[0046] Figure 5A cross-sectional view of a manual lifting mechanism provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0048] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0051] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0052] like Figures 1 to 5 As shown, the fully protected electric stopper rod actuator provided in the embodiment of the present application includes: a fixed frame 1, a lifting frame 2, a linear slide rail 4, a slider 5, an electric cylinder mechanism 6 and a manual lifting mechanism 7.

[0053] The utility model provides a fully protected electric stopper rod actuator, specifically comprising: a fixed frame 1; a lifting frame 2 arranged in the fixed frame 1; a closed chamber 3 formed by the combination of the fixed frame 1 and the lifting frame 2; a linear slide rail 4 arranged in the closed chamber 3 and movably connected to the lifting frame 2; the linear slide rail 4 is fixedly arranged on the inner side of the fixed frame 1; a slider 5 arranged in the closed chamber 3; one end of the slider 5 is fixedly arranged on the inner wall of the lifting frame 2, and the other end is movably connected to the linear slide rail 4, and moves up and down following the lifting frame 2; an electric cylinder mechanism 6 arranged on the outer side of the lifting frame 2; the electric cylinder mechanism 6 is connected to the lifting frame 2 and the fixed frame 1 at both ends; a manual lifting mechanism 7 is arranged on the outer wall of the fixed frame 1 and connected to the lifting frame 2. Compared with the prior art, the technical solution provided by the utility model adopts a linear slide rail 4 and a slider as a guide, and the guide is more accurate, and no adjustment is required during installation and use, which reduces the influence of human factors on the guide accuracy.

[0054] The technical solution of the utility model is described in detail below in conjunction with specific embodiments:

[0055] Specifically, in a specific embodiment of the present utility model, the fixing frame 1 is specifically an L-shaped fixing frame.

[0056] Specifically, in a specific embodiment of the present utility model, the fully protected electric stopper rod actuator further comprises: a spring buffer mechanism 8 disposed below the lifting frame 2 .

[0057] In this embodiment, the spring buffer mechanism 8 is provided in the fixing frame 1 and is located below the lifting frame 2 for balancing part of the weight of the lifting frame 2 , the stopper rod and the crossbeam, thereby reducing the load pressure of the electric cylinder mechanism 6 .

[0058] Specifically, in a specific embodiment of the present utility model, the electric cylinder mechanism 6 includes: a first fixed seat 9 arranged on the outer wall of the lifting frame 2; an electric cylinder body 10 connected to the first fixed seat 9; a servo motor 11 arranged at the rear end of the electric cylinder body 10; and a second fixed seat 12 arranged at the bottom of the servo motor 11, connecting the servo motor 11 and the fixed frame 1.

[0059] Among them, the electric cylinder mechanism 6 is used to provide driving force for the up and down movement of the lifting frame 2; in this embodiment, the electric cylinder mechanism 6 is located on the outside of the lifting frame 2, and its main structure is composed of the first fixed seat 9, the electric cylinder body 10, the servo motor 11 and the second fixed seat 12; one end of the first fixed seat 9 is fixedly set on the outer wall of the lifting frame 2, and the other end is connected to the electric cylinder body 10. Under the driving action of the electric cylinder body 10, the first fixed seat 9 drives the lifting frame 2 to move up and down in a straight line; the servo motor 11 is arranged below the electric cylinder body 10 to provide driving force; and the second fixed seat 12 connects the servo motor 11 and the fixed frame 1 to fix the position of the servo motor 11.

[0060] Specifically, in a specific embodiment of the utility model, the fully protected electric stopper rod actuator also includes: a U-shaped shield 13 arranged on the outside of the electric cylinder mechanism 6; an observation window 14 and a first handle 15 are provided on the U-shaped shield 13; the U-shaped shield 13 is movably connected to the fixing frame 1, and is used to seal the electric cylinder body 10 and the servo motor 11.

[0061] Among them, in this embodiment, the U-shaped shield 13 is arranged on the outside of the electric cylinder mechanism 6, and is used to cover the electric cylinder body 10 and the servo motor 11; the U-shaped shield 13 is a movable shield, which is movably connected to the L-shaped fixing frame 1, and can be opened when installing or replacing the electric cylinder mechanism 6. The shield is closed when the mechanism is in normal use, so that the electric cylinder mechanism 6 is protected from external high temperature and dust.

[0062] Specifically, in a specific embodiment of the present utility model, the manual lifting mechanism 7 includes: a bearing seat 16 embedded in the side wall of the fixed frame 1; a rotating shaft 17 that passes through the bearing seat 16 and is movably connected to the bearing seat 16; a composite oil-free bearing 18 arranged between the rotating shaft 17 and the bearing seat 16; a rocker 19 arranged on the input end of the rotating shaft 17; a sector gear 20 arranged on the output end of the rotating shaft 17; and a rack 21 arranged on the lifting frame 2 and meshing with the sector gear 20.

[0063] Among them, in this embodiment, the manual lifting mechanism 7 is composed of the rocker 19, the bearing seat 16, the pin shaft, the rotating shaft 17, the composite oil-free bearing 18, the fan gear 20, the key, and the rack 21. The rack 21 is installed on the lifting frame 2, the rotating shaft 17 is installed in the bearing seat 16, the fan gear 20 is installed on the inner side of the shaft, and the outer side of the rotating shaft 17 is processed into a square, which cooperates with the U-shaped groove of the rocker 19 and is connected and fixed by the pin shaft; the rocker 19 is manually operated, and the rocker 19 rotates to drive the fan gear 20 to rotate through the rotating shaft 17 and the key, and the fan gear 20 then drives the rack 21 to move up and down, thereby driving the lifting frame 2 to move up and down; the composite oil-free bearing 18 adopts SF1 composite oil-free bearing 18.

[0064] Specifically, in a specific embodiment of the present utility model, the input end of the rotating shaft 17 is arranged in a square shape, and one end of the rocker 19 is arranged with a U-shaped groove; the square input end of the rotating shaft 17 is engaged with the U-shaped groove; the input end of the rotating shaft 17 is arranged with a pin shaft for connecting and fixing the rocker 19; the output end of the rotating shaft 17 is arranged with a key, and the sector gear 20 is sleeved on the output end of the rotating shaft 17 and engaged with the key.

[0065] Specifically, in a specific embodiment of the present utility model, the fully protected electric stopper actuator further comprises: a locking mechanism 22 arranged on the side wall of the fixing frame 1 ; and a limiting mechanism 23 arranged on the side wall of the fixing frame 1 .

[0066] In this embodiment, the fully protected electric stopper rod actuator is further provided with the locking mechanism 22 and the limiting mechanism 23; when the lifting frame 2 rises or descends to a predetermined position, the locking mechanism 22 is used to fix the position of the lifting frame 2; the limiting mechanism 23 is used to limit the linear range in which the lifting frame 2 can move up and down in the vertical direction.

[0067] Specifically, in a specific embodiment of the present utility model, the locking mechanism 22 includes: a third fixed seat 24 arranged on the side wall of the fixed frame 1; a rotating rod 25 arranged in the third fixed seat 24; the rotating rod 25 passes through the third fixed seat 24 and performs a rotational upward or rotational downward movement in the third fixed seat 24; a second handle 26 arranged at the head end of the rotating rod 25; and a locking block 27 arranged at the tail end of the rotating rod 25 for abutting and braking against the lifting frame 2.

[0068] Among them, in this embodiment, the main structure of the locking mechanism 22 is composed of the third fixed and rotating rods 25, the second handle 26 and the locking block 27; when the lifting frame 2 needs to be locked, the second handle 26 is manually rotated clockwise or counterclockwise, and the rotating rod 25 rotates forward, driving the locking block 27 to move forward, so that the locking block 27 is close to the side wall of the lifting frame 2 to achieve a braking effect; when the lifting frame 2 does not need to be locked, the second handle 26 is manually rotated counterclockwise or clockwise, and the rotating rod 25 rotates and contracts, driving the locking block 27 to move backward, so that the locking block 27 is away from the side wall of the lifting frame 2, and the lifting frame 2 is released.

[0069] Specifically, in a specific embodiment of the present utility model, the limiting mechanism 23 is specifically a limiting screw; a limiting long hole is provided on the side plate of the lifting frame 2; one end of the limiting screw passes through the fixing frame 1 and extends into the limiting long hole, so as to limit the range of up and down movement of the lifting frame 2.

[0070] In this embodiment, the limiting mechanism 23 adopts a limiting screw, the screw end of the limiting screw passes through the side wall of the fixing frame 1 and extends to the limiting long hole. The length of the limiting long hole represents the range in which the lifting frame 2 can move up and down.

[0071] Specifically, in a specific embodiment of the present utility model, the fully protected electric stopper rod actuator further comprises: a lifting position indicating mechanism 28 arranged on the side wall of the fixing frame 1 .

[0072] In this embodiment, the lifting position indicating mechanism 28 is used to indicate the rising or falling position of the lifting frame 2 through scale prompts.

[0073] As described above, the fully protected electric stopper rod actuator provided by the embodiment of the utility model can solve the problem that the existing stopper rod actuator has inaccurate guidance and affects the normal operation of the stopper rod. In the fully protected electric stopper rod actuator, its main structure is composed of a fixed frame 1, a lifting frame 2, a linear slide rail 4, a slide block 5, an electric cylinder mechanism 6 and a manual lifting mechanism 7. The lifting frame 2 is used to install the stopper rod, and the lower end of the lifting frame 2 is arranged in the fixed frame 1. Under the action of power, it can make a linear up and down movement in the fixed frame 1, so that the stopper rod can complete a specific work task; secondly, the interior of the lifting frame 2 is set as a cavity, and its lower end is embedded in the fixed frame 1, so that the lifting frame 2 and the fixed frame 1 will be combined to form the closed chamber 3; and the closed chamber 3 is installed with the linear slide rail 4 and the slider 5, wherein the linear slide rail 4 is vertically fixed to the inner wall of the fixed frame 1, and one end face of the slider 5 is fixed to the inner wall of the lifting frame 2, and the other end face is seamlessly connected with the linear slide rail 4. When the lifting frame 2 moves up and down, the slider 5 will follow the movement, and the slider 5 slides up and down along the linear slide rail 4. In the utility model, the linear slide rail 4 and the slider 5 are used. The linear guide rail 4 and the slider 5 are used for guidance. When the two are connected, seamless connection can be achieved, which can make the guidance more accurate. Since the linear guide rail 4 and the slider are directly arranged in the closed chamber 3, they can also effectively prevent external dust from entering, play a role in dust protection, and indirectly ensure the guidance accuracy. The electric cylinder mechanism 6 and the manual lifting mechanism 7 are provided to provide driving force for the up and down movement of the lifting frame 2. Under the action of the electric cylinder mechanism 6 or the manual lifting mechanism 7, the lifting frame 2 moves up and down, and the slider 5 located on the inner wall of the lifting frame 2 slides on the linear guide rail 4. The two cooperate to accurately guide the movement of the lifting frame 2, so that the stopper rod installed on the lifting frame 2 can accurately control the opening and closing degree between it and the middle bag water nozzle brick, change the flow rate of molten steel, and thus complete a specific work task. Therefore, the technical solution provided by the utility model, compared with the prior art, adopts the linear guide rail 4 and the slider as the guide, the guidance is more accurate, and no adjustment is required during installation and use, which reduces the influence of human factors on the guidance accuracy.

[0074] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully protected electric stopper actuator, characterized in that: include: Fixed frame; A lifting frame disposed in the fixing frame; The fixed frame and the lifting frame are combined to form a closed chamber; A linear slide rail disposed in the enclosed chamber and movably connected to the lifting frame; The linear slide rail is fixedly arranged on the inner side of the fixing frame; A slider disposed in the sealed chamber; One end of the slider is fixedly arranged on the inner wall of the lifting frame, and the other end is movably connected to the linear slide rail; An electric cylinder mechanism disposed outside the lifting frame; The head and tail ends of the electric cylinder mechanism are respectively connected to the lifting frame and the fixing frame; A manual lifting mechanism is arranged on the outer side wall of the fixing frame and connected to the lifting frame.

2. The fully protected electric stopper actuator according to claim 1, characterized in that: The fully protected electric stopper actuator also includes: A spring buffer mechanism is arranged below the lifting frame.

3. The fully protected electric stopper actuator according to claim 1, characterized in that: The electric cylinder mechanism comprises: A first fixing seat disposed on the outer side wall of the lifting frame; An electric cylinder body connected to the first fixing seat; A servo motor is arranged at the rear end of the electric cylinder body; The second fixing seat is arranged at the bottom of the servo motor and connects the servo motor and the fixing frame.

4. The fully protected electric stopper actuator according to claim 3, characterized in that: The fully protected electric stopper actuator also includes: A U-shaped shield disposed outside the electric cylinder mechanism; The U-shaped shield is provided with an observation window and a first handle; The U-shaped shield is movably connected to the fixing frame and is used for sealing the electric cylinder body and the servo motor.

5. The fully protected electric stopper actuator according to claim 1, characterized in that: The manual lifting mechanism comprises: A bearing seat embedded in the side wall of the fixing frame; A rotating shaft that passes through the bearing seat and is movably connected to the bearing seat; A composite oil-free bearing disposed between the rotating shaft and the bearing seat; A rocker disposed on the input end of the rotating shaft; A sector gear disposed on the output end of the rotating shaft; A rack is arranged on the lifting frame and meshes with the sector gear.

6. The fully protected electric stopper actuator according to claim 5, characterized in that: The input end of the rotating shaft is arranged in a square shape, and one end of the rocker is provided with a U-shaped groove; The square input end of the rotating shaft is engaged with the U-shaped groove; The input end of the rotating shaft is provided with a pin shaft for connecting and fixing the rocker; The output end of the rotating shaft is provided with a key, and the sector gear is sleeved on the output end of the rotating shaft and is engaged with the key.

7. The fully protected electric stopper actuator according to claim 1, characterized in that: The fully protected electric stopper actuator also includes: A locking mechanism disposed on the side wall of the fixing frame; A limiting mechanism is arranged on the side wall of the fixing frame.

8. The fully protected electric stopper actuator according to claim 7, characterized in that: The locking mechanism comprises: A third fixing seat disposed on the side wall of the fixing frame; A rotating rod disposed in the third fixing seat; The rotating rod passes through the third fixing seat and performs a rotational ascending or rotational descending motion in the third fixing seat; A second handle disposed at the head end of the rotating rod; A locking block is arranged at the rear end of the rotating rod and is used to abut against the lifting frame for braking.

9. The fully protected electric stopper actuator according to claim 7, characterized in that: The limiting mechanism is specifically a limiting screw; The side plate of the lifting frame is provided with a limited position long hole; One end of the limit screw passes through the fixing frame and extends into the limit long hole, so as to limit the range of up and down movement of the lifting frame.

10. The fully protected electric stopper actuator according to claim 1, characterized in that: The fully protected electric stopper actuator also includes: A lifting position indicating mechanism is arranged on the side wall of the fixing frame.

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