A lightweight electrostatic hydraulic actuator

Abstract

The present invention relates to the field of electrostatic hydraulic actuators, and in particular to a lightweight electrostatic hydraulic actuator, comprising a fluid circuit component, including a sliding bin, a piston arranged in the sliding bin, a plunger arranged on the piston, a control bin opened at the left end of the upper side of the sliding bin, three sliding plugs arranged in the control bin, a connecting column arranged on the sliding plug, a quantitative hydraulic pump arranged at the upper end of the control bin, and a pipeline arranged among the sliding bin, the control bin, and the quantitative hydraulic pump; a warning component, comprising a housing component arranged on the control bin, a sliding component arranged on the housing component, a bright light component arranged on the housing component, and a changing component arranged on the bright light component; a replacement component, comprising a rotating component arranged on the housing component. The present invention can give a warning when a spring cannot be completely reset, and can quickly replace the spring to ensure accurate on-off of the pipeline.

Description

Technical Field

[0001] The present invention relates to the field of electro-hydrostatic actuators, and particularly to a lightweight electro-hydrostatic actuator. Background Art

[0002] An electro-hydrostatic actuator is a technology that combines the advantages of electric power transmission and hydraulic actuation, and is widely used in the aircraft and industrial fields. It drives a hydraulic pump through an electric motor to provide hydraulic power to generate the actuator output. The development trends of electro-hydrostatic actuators include higher power density, lightweight, etc. In recent years, the development of lightweight electro-hydrostatic actuators has been rapid.

[0003] During use, a lightweight electro-hydrostatic actuator mainly consists of a fixed-displacement hydraulic pump, a control chamber, pipelines, and a sliding chamber, etc. When in use, the control chamber controls the on-off of the pipeline, and the fixed-displacement hydraulic pump pumps liquid to push the sliding plug on the plunger to slide, thereby controlling the sliding of the plunger.

[0004] During the control process of the control chamber, the control of the sliding plug in the control chamber is mainly carried out through the cooperation of a spring and an electromagnet. After using this method for a period of time, due to the fatigue strength of the spring, when resetting, it is inevitable that the sliding plug cannot be reset to the required position. The existing electro-hydrostatic actuators cannot detect whether the sliding plug is reset. Therefore, when the spring cannot be reset to the required position, there will be an error in the on-off of the pipeline, affecting the overall use of the electro-hydrostatic actuator. Summary of the Invention

[0005] In view of the above-mentioned or existing problem that after the spring is used for a period of time, it is inevitable that the spring cannot be reset to the required position, resulting in an error in the on-off of the pipeline and affecting the overall use of the electro-hydrostatic actuator, the present invention is proposed.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a liquid path component, including a sliding chamber, a piston disposed in the sliding chamber, a plunger disposed on the piston, a control chamber with a left-end opening disposed above the sliding chamber, three sliding plugs disposed in the control chamber, a connecting column disposed on the sliding plug, a fixed-displacement hydraulic pump disposed at the upper end of the control chamber, and pipelines disposed among the sliding chamber, the control chamber, and the fixed-displacement hydraulic pump; a warning component, including a receiving component disposed on the control chamber, a sliding component disposed on the receiving component, a lighting component disposed on the receiving component, and a changing component disposed on the lighting component; a replacement component, including a rotating component disposed on the receiving component, a guiding component disposed on the rotating component, a clamping component disposed on the sliding component, and a replacement component disposed on the receiving component.

[0007] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the accommodating assembly includes a mounting shell fixedly connected to the side wall of the control chamber, the mounting shell is provided with an opening, an electromagnet is fixedly connected in the opening, and an iron block cooperating with the electromagnet is fixedly connected to the sliding plug.

[0008] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the sliding assembly includes a rotating shaft rotatably connected in the mounting shell, four mounting grooves are provided on the rotating shaft, a vertical plate and an L-shaped plate are slidably connected in the mounting grooves, discs are fixedly connected to both the vertical plate and the L-shaped plate, and the two discs are elastically connected by a spring.

[0009] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the lighting assembly includes a through hole provided on the mounting shell, a display cylinder is rotatably connected in the through hole, and a plurality of lamp posts with different colors are fixedly connected in the display cylinder.

[0010] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the changing assembly includes an accommodating groove provided in the rotating shaft, the mounting groove is communicated with the accommodating groove, a plurality of trigger posts are fixedly connected in the accommodating groove, a bearing post fixed to the mounting shell is fixedly connected to the rightmost trigger post, the diameter of the bearing post is smaller than the diameter of the trigger post, and trigger needles cooperating with the plurality of trigger posts are provided on the plurality of L-shaped plates.

[0011] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the plurality of trigger posts correspond to the lamp posts one by one, and the lamp posts are provided with power-on delays.

[0012] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the rotating assembly includes an outward expanding groove fixedly connected to the mounting shell, four card slots are provided on the side wall of the outward expanding groove, a telescopic rod is fixedly connected to the display cylinder, and a card strip cooperating with the card slot is fixedly connected to the telescopic end of the telescopic rod.

[0013] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the guiding assembly includes an arc-shaped block fixedly connected to the inner wall of the mounting shell, a cutting edge is provided on the arc-shaped block, and an arc edge cooperating with the cutting edge is provided on the L-shaped plate.

[0014] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the clamping assembly includes a first L-shaped clamping block fixedly connected to the sliding plug, a second clamping block cooperating with the first clamping block is fixedly connected to the disc, an anti-detachment block cooperating with the second clamping block is fixedly connected to the first clamping block, and the vertical side of the second clamping block is located between the second clamping block and the anti-detachment block.

[0015] As a preferred embodiment of the lightweight electro-hydrostatic actuator of the present invention, wherein: the replacement component includes a detection port provided on the mounting shell, the upper end of the detection port is fixedly connected with a cover plate by bolts, both of the two discs are provided with L-shaped openings, the L-shaped plate is inserted into the L-shaped opening, and pins abutting against the L-shaped plate and the vertical plate are provided in the two L-shaped openings.

[0016] The beneficial effects of the lightweight electro-hydrostatic actuator of the present invention: By providing the liquid path component and the warning component, it can automatically give a warning when the spring cannot be reset to the required position, and the warning process is a continuous process (that is, it can give a reminder when the spring just starts to be unable to be reset), and according to the color of the lamp post on the display cylinder, the replacement time and the continuous use time can be determined, avoiding waste in the use of the spring, and through the replacement component, when replacing the spring, only need to pull out the clamping block and then rotate the clamping block, which is convenient to use and quick to replace, thus solving the problem that after the spring is used for a period of time, it is inevitable that it cannot be reset to the required position, resulting in incorrect on-off of the pipeline and affecting the overall use of the electro-hydrostatic actuator, achieving the effect of warning when the spring cannot be fully reset and being able to quickly replace the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0018] Figure 1 It is a sectional view of the sliding bin of the lightweight electro-hydrostatic actuator.

[0019] Figure 2 It is a schematic external structure diagram of the accommodation component of the lightweight electro-hydrostatic actuator.

[0020] Figure 3 For Figure 2 The enlarged schematic view of the structure at A of

[0021] Figure 4 It is a sectional structure schematic diagram of the change component of the lightweight electro-hydrostatic actuator.

[0022] Figure 5 For Figure 4 The enlarged schematic view of the structure at B of

[0023] Figure 6 It is a schematic internal structure diagram of the mounting shell of the lightweight electro-hydrostatic actuator.

[0024] Figure 7 It is a schematic external structure diagram of the rotating shaft of the lightweight electro-hydrostatic actuator.

[0025] In the figure: 100, a liquid path component; 101, a sliding bin; 102, a piston; 103, a plunger; 104, a control bin; 105, a sliding plug; 106, a connecting column; 107, a metering hydraulic pump; 108, a pipeline; 200, a warning component; 201, a receiving component; 2011, a mounting shell; 2012, an opening; 2013, an electromagnet; 2014, an iron block; 202, a sliding component; 2021, a rotating shaft; 2022, a mounting groove; 2023, a vertical plate; 2024, an L-shaped plate; 2025, a disc; 2026, a spring; 203, a bright light component; 2031, a through port; 2032, a display cylinder; 2033, a lamp post; 204, a changing component; 2041, a receiving groove; 2042, a triggering column; 2043, a bearing column; 2044, a triggering needle; 300, a replacement component; 301, a rotating component; 3011, an outward expansion groove; 3012, a clamping groove; 3013, a telescopic rod; 3014, a clamping strip; 302, a guiding component; 3021, an arc-shaped block; 3022, a cutting edge; 3023, an arc edge; 303, a clamping component; 3031, a first clamping block; 3032, a second clamping block; 3033, an anti-detachment block; 304, a replacement component; 3041, a probing port; 3042, a cover plate; 3043, an L-shaped port; 3044, a bolt. Detailed implementation mode

[0026] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation mode of the present invention will be made in conjunction with the drawings in the specification.

[0027] Example 1, referring to Figures 1 to 7, which is the first embodiment of the present invention. This embodiment provides a lightweight electro-hydrostatic actuator that can achieve the effect of automatically reminding when the spring 2026 in the control chamber 104 cannot be reset to the required position. It includes a liquid circuit component 100, which includes a sliding chamber 101, a piston 102 arranged in the sliding chamber 101, a plunger 103 arranged on the piston 102, a control chamber 104 with an open left end arranged on the upper side of the sliding chamber 101, three sliding plugs 105 arranged in the control chamber 104, a connecting column 106 arranged on the sliding plug 105, a metering hydraulic pump 107 arranged at the upper end of the control chamber 104, and a pipeline 108 arranged among the sliding chamber 101, the control chamber 104, and the metering hydraulic pump 107; a warning component 200, which includes a receiving component 201 arranged on the control chamber 104, a sliding component 202 arranged on the receiving component 201, a lighting component 203 arranged on the receiving component 201, and a changing component 204 arranged on the lighting component 203; a replacement component 300, which includes a rotating component 301 arranged on the receiving component 201, a guiding component 302 arranged on the rotating component 301, a clamping component 303 arranged on the sliding component 202, and a replacement component 304 arranged on the receiving component 201.

[0028] Specifically, the plunger 103 here can slide left and right. The control chamber 104 controls the on-off of the pipeline 108, and then realizes the left and right movement of the piston 102 through hydraulic pressure, driving the plunger 103 to move. Here, the metering hydraulic pump 107 can automatically provide hydraulic pressure for pumping liquid. The above-mentioned sliding chamber 101, control chamber 104, metering hydraulic pump 107 and their internal structures form an electro-hydrostatic actuator, and the electro-hydrostatic actuator is a prior art and will not be elaborated here.

[0029] Furthermore, the receiving component 201 includes a mounting shell 2011 fixedly connected to the side wall of the control chamber 104. The mounting shell 2011 is provided with an opening 2012, and an electromagnet 2013 is fixedly connected in the opening 2012. An iron block 2014 cooperating with the electromagnet 2013 is fixedly connected to the sliding plug 105; the sliding component 202 includes a rotating shaft 2021 rotatably connected in the mounting shell 2011. Four mounting grooves 2022 are provided on the rotating shaft 2021. A vertical plate 2023 and an L-shaped plate 2024 are slidably connected in the mounting grooves 2022. Disks 2025 are fixedly connected to both the vertical plate 2023 and the L-shaped plate 2024. The two disks 2025 are elastically connected by a spring 2026. Here, an extension block is also fixedly connected to the upper end of the L-shaped plate 2024 to prevent the L-shaped plate 2024 from disengaging from the mounting groove 2022.

[0030] Among them, there will be no liquid (generally hydraulic oil) passing between the leftmost sliding plug 105 and the electromagnet 2013 here, so there is no need to worry about liquid entering the installation shell 2011. When the electromagnet 2013 is energized, the iron block 2014 can be made to move towards the electromagnet 2013, driving the sliding plug 105 to move, so that the liquid in the metering hydraulic pump 107 can enter the sliding chamber 101 through the pipeline 108 and the control chamber 104 to push the piston 102 to move.

[0031] Preferably, the bright light assembly 203 includes a through hole 2031 provided on the installation shell 2011. A display cylinder 2032 is rotatably connected in the through hole 2031, and a plurality of lamp posts 2033 with different colors are fixedly connected in the display cylinder 2032; the change assembly 204 includes a receiving groove 2041 provided in the rotating shaft 2021. The installation groove 2022 communicates with the receiving groove 2041. A plurality of trigger posts 2042 are fixedly connected in the receiving groove 2041. A bearing post 2043 fixed to the installation shell 2011 is fixedly connected to the right end trigger post 2042. The diameter of the bearing post 2043 is smaller than the diameter of the trigger post 2042. Trigger needles 2044 cooperating with the plurality of trigger posts 2042 are provided on the plurality of L-shaped plates 2024; the plurality of trigger posts 2042 correspond to the lamp posts 2033 one by one, and the lamp posts 2033 are provided with power-on delay.

[0032] It should be noted that the function of the power-on delay here is that when the sliding plug 105 moves normally to drive the L-shaped plate 2024 to move, when the trigger needle 2044 on the L-shaped plate 2024 cooperates with the trigger post 2042, the lamp post 2033 will not be lit, avoiding misjudgment caused by the lighting of the lamp post 2033 when the sliding plug 105 moves normally.

[0033] In use, when the sliding plug 105 moves, it pushes the disc 2025 to move, causing the L-shaped plate 2024 to move and the spring 2026 to compress. After the spring 2026 returns to its normal position, the trigger pin 2044 is on the right side of the trigger post 2042. At this time, the lamp post 2033 is not lit. When the spring 2026 cannot be fully reset after being used multiple times, the trigger pin 2044 on the L-shaped plate 2024 cannot move to the right side of the trigger post 2042, and the trigger pin 2044 abuts against the trigger post 2042, causing the lamp post 2033 to light up, so that it can be directly known that the spring 2026 is not fully reset. There are multiple trigger posts 2042 here, and the multiple trigger posts 2042 correspond to different lamp posts 2033. Therefore, when the degree of incomplete reset of the spring 2026 is different, the colors of the corresponding lamp posts 2033 are different, and the colors of the display posts are different. According to the color shown by the display post, it can be judged whether replacement is needed. Since the sliding plug 105 has a certain thickness, which is generally greater than the pipeline 108, when the spring 2026 is only slightly not reset, the spring 2026 can still be used. When there are more, the colors of the display posts are different, so that the recovery state can be directly understood according to the color. The material of the display cylinder 2032 here is transparent acrylic board, which will not block the observation of the light-emitting of the lamp beads.

[0034] In summary, by setting the liquid path component 100 and the warning component 200, when the spring 2026 cannot be reset to the required position, it can automatically give a light warning, and according to the different degrees of reset of the spring 2026, lights of different colors are emitted. According to the emitted light color, it can be determined whether the spring 2026 needs to be replaced, avoiding the impact on the overall use caused by the inability of the spring 2026 to be reset.

[0035] Embodiment 2, referring to Figures 1 to 7 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a replacement component 300 for a lightweight electro-hydrostatic actuator, which solves the problem of how to quickly replace the spring 2026. It includes a rotating component 301, which includes an outward expansion groove 3011 fixedly connected to the installation shell 2011. There are four card slots 3012 on the side wall of the outward expansion groove 3011. An expansion rod 3013 is fixedly connected to the display cylinder 2032, and a card strip 3014 that cooperates with the card slot 3012 is fixedly connected to the telescopic end of the expansion rod 3013. The guiding component 302 includes an arc-shaped block 3021 fixedly connected to the inner wall of the installation shell 2011. There is a cut edge 3022 on the arc-shaped block 3021, and an arc edge 3023 that cooperates with the cut edge 3022 is provided on the L-shaped plate 2024; the clamping component 303 includes a first clamping block 3031 in an L shape fixedly connected to the sliding plug 105, and a second clamping block 3032 that cooperates with the first clamping block 3031 is fixedly connected to the disc 2025. An anti-detachment block 3033 that cooperates with the second clamping block 3032 is fixedly connected to the first clamping block 3031, and the vertical side of the second clamping block 3032 is between the second clamping block 3032 and the anti-detachment block 3033.

[0036] Specifically, the number of card slots 3012 here is equal to that of the L-shaped plates 2024, so that each time of switching can ensure that the card slots 3012 are facing the card strips 3014. There is damping between the card strips 3014 and the card slots 3012, and when the card strips 3014 enter the card slots 3012, they will not automatically disengage, ensuring the stability of the card strips 3014. The outer end of the arc-shaped plate extends to the outside of the control bin 104, so as to ensure that when the disc 2025 resets, there will be no collision with the control bin 104. There is a gap between the upper end of the vertical side of the second catch 3032 and the bottom of the horizontal side of the first catch 3031, avoiding the phenomenon that the first catch 3031 and the second catch 3032 are jammed when the disc 2025 rotates around the rotating shaft 2021.

[0037] During use, when the reset of a spring 2026 does not meet the requirements, the telescopic rod 3013 is pulled to separate the clamping strip 3014 from the clamping groove 3012. Then, the telescopic rod 3013 is rotated clockwise (viewed from the left end, the same below), so that the display cylinder 2032 rotates clockwise, thereby the rotating shaft 2021 rotates clockwise, and thus the lowermost L-shaped plate 2024 rotates around the rotating shaft 2021. Here, the diameter of the disc 2025 is smaller than the diameter of the control bin 104, so there is a gap between the disc 2025 and the inner wall of the control bin 104. When the L-shaped plate 2024 rotates around the rotating shaft 2021, the arc edge 3023 on the L-shaped plate 2024 cooperates with the cutting edge 3022 on the arc-shaped plate, causing the L-shaped plate 2024 to move towards the vertical plate 2023. Thus, the disc 2025 at the right end moves towards the vertical plate 2023, and the disc 2025 slowly leaves the sliding bin 101. Here, the slope of the cutting edge 3022 on the arc-shaped plate needs to be controlled to ensure that the disc 2025 has left the sliding bin 101 before the disc 2025 abuts against the inner wall of the sliding bin 101, thereby avoiding the phenomenon of jamming between the disc 2025 and the inner wall of the sliding bin 101. The same applies when a new spring 2026 is sent into the sliding bin 101. Before the L-shaped plate 2024 moves into the sliding bin 101, the arc edge 3023 on the L-shaped plate 2024 abuts against the cutting edge 3022 of the arc-shaped plate first, causing the L-shaped plate 2024 to move to the left side of the sliding bin 101, avoiding jamming between the L-shaped plate 2024 and the side wall of the sliding bin 101 when the L-shaped plate 2024 moves into the sliding bin 101. It should be noted that when the new L-shaped plate 2024 moves into the sliding bin 101, the disc 2025 needs to be completely aligned with the inside of the sliding bin 101 to avoid the phenomenon that the disc 2025 abuts against the left side wall of the sliding bin 101 when the L-shaped plate 2024 resets. When the disc 2025 moves into the sliding bin 101, at this time, the front side wall of the disc 2025 abuts against the inner wall of the sliding bin 101. As the disc 2025 continues to rotate around the rotating shaft 2021, it can drive the second clamping block 3032 to be clamped between the first clamping block 3031 and the anti-disengagement block 3033. Thus, when the sliding plug 105 moves, the disc 2025 moves, driving the spring 2026 to be compressed, avoiding the phenomenon of separation movement between the disc 2025 and the sliding plug 105. There is a gap between the upper end of the vertical side of the second clamping block 3032 and the bottom of the horizontal side of the first clamping block 3031, and no jamming will occur when the second clamping block 3032 rotates out. The number of the clamping strips 3014 here is equal to the number of the springs 2026, so that each time the clamping block is aligned with the clamping groove 3012, the center of the disc 2025 is collinear with the center of the sliding bin 101.

[0038] In summary, by providing the replacement component 300, when the spring 2026 needs to be replaced, only need to pull the telescopic rod 3013, and then rotate the latch 3014 so that the latch 3014 is aligned with the slot 3012 again, then the old spring 2026 can be automatically withdrawn from the sliding bin 101, and the new spring 2026 can be pushed into the sliding bin 101 to ensure that the sliding plug 105 can be reset to the required position.

[0039] Embodiment 3, refer to Figures 1 to 7 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a replacement component 304 for a lightweight electro-hydrostatic actuator, which solves the problem of how to replace the spring 2026 in the mounting shell 2011 when multiple springs 2026 are damaged. It includes a replacement component 304, which includes an inspection port 3041 provided on the mounting shell 2011. The upper end of the inspection port 3041 is fixedly connected with a cover plate 3042 by bolts. L-shaped ports 3043 are provided on both disks 2025. The L-shaped plate 2024 is inserted into the L-shaped port 3043, and pins 3044 that abut against the L-shaped plate 2024 and the vertical plate 2023 are provided in the two L-shaped ports 3043.

[0040] Specifically, when replacing the spring 2026 in the mounting shell 2011 here, rotate the rotating shaft 2021 counterclockwise. In this way, since the wire (referring to the wire between the lamp post 2033 and the trigger post 2042) is not continuously wound, the phenomenon of wire jamming will not occur. Of course, since the current required by the lamp post 2033 is small, it can also be powered by induction. The induction power supply here is an existing technology and will not be elaborated here.

[0041] During use, when multiple springs 2026 are damaged, only need to rotate the bolt to remove the cover plate 3042. At this time, the hand can reach into the inspection port 3041 and toggle the pin 3044 to separate the disks 2025 from the L-shaped plate 2024 and the vertical plate 2023. At this time, the two disks 2025 and the spring 2026 can be taken out, and then the new spring 2026 can be placed between the two disks 2025, and then the fixing between the vertical plate 2023 or the L-shaped plate 2024 and the disk 2025 can be re-performed. Here, the disk 2025 and the spring 2026 can be set as a group for replacement as a whole, or the connection between the disk 2025 and the spring 2026 can be set to be detachable. The method here is not limited, and it is mainly for specific convenience in use.

[0042] In summary, by providing the replacement component 304, after multiple springs 2026 are damaged, the mounting shell 2011 can be opened to replace the multiple damaged springs 2026, thereby ensuring the performance of the spring 2026, avoiding the replacement of the damaged spring 2026 again, and ensuring that the sliding plug 105 can be reset to the required position.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A lightweight electrostatic hydraulic actuator, characterized in that: include, A fluid path component (100), comprising a sliding chamber (101), a piston (102) disposed in the sliding chamber (101), a plunger (103) disposed on the piston (102), a control chamber (104) disposed on the upper side of the sliding chamber (101) and having a left end opening, three sliding plugs (105) disposed in the control chamber (104), a connecting column (106) disposed on the sliding plugs (105), a quantitative hydraulic pump (107) disposed at the upper end of the control chamber (104), and a pipeline (108) disposed between the sliding chamber (101), the control chamber (104), and the quantitative hydraulic pump (107); The warning component (200) comprises a receiving component (201) arranged on the control compartment (104), a sliding component (202) arranged on the receiving component (201), a bright light component (203) arranged on the receiving component (201), and a changing component (204) arranged on the bright light component (203); A replacement component (300) comprises a rotating component (301) arranged on the containing component (201), a guiding component (302) arranged on the rotating component (301), a locking component (303) arranged on the sliding component (202), and a replacement component (304) arranged on the containing component (201); The sliding assembly (202) comprises a rotating shaft (2021) rotatably connected in the mounting shell (211), the rotating shaft (2021) being provided with four mounting grooves (2022), a vertical plate (2023) and an L-shaped plate (2024) being slidably connected in the mounting grooves (2022), a circular plate (2025) being fixedly connected to both the vertical plate (2023) and the L-shaped plate (2024), and two circular plates (2025) being elastically connected via a spring (226); The engaging assembly (303) comprises an L-shaped first clamping block (3031) fixedly connected to the sliding plug (105); a second clamping block (3032) matched with the first clamping block (3031) is fixedly connected to the disc (2025); an anti-slipping block (3033) matched with the second clamping block (3032) is fixedly connected to the first clamping block (3031); a vertical side of the second clamping block (3032) is located between the second clamping block (3032) and the anti-slipping block (3033); The replacement assembly (304) comprises an exploration port (3041) arranged on the mounting shell (2011); the upper end of the exploration port (3041) is fixedly connected to a cover plate (3042) by means of bolts; the two discs (2025) are each provided with an L-shaped opening (3043); the L-shaped plate (2024) is inserted into the L-shaped opening (3043); and the two L-shaped openings (3043) are provided with latches (3044) that abut against the L-shaped plate (2024) and the vertical plate (2023).

2. The lightweight electrostatic hydraulic actuator according to claim 1, characterized in that: The accommodating assembly (201) comprises a mounting shell (2011) fixedly connected to a side wall of a control compartment (104); an opening (2012) is provided on the mounting shell (2011); an electromagnet (2013) is fixedly connected inside the opening (2012); and an iron block (2014) that cooperates with the electromagnet (2013) is fixedly connected to the sliding plug (105).

3. The lightweight electrostatic hydraulic actuator according to claim 2, characterized in that: The bright light assembly (203) comprises a through opening (2031) arranged on the mounting shell (2011), a display tube (2032) being rotatably connected in the through opening (2031), and a plurality of lamp posts (2033) of different colors being fixedly connected in the display tube (2032).

4. The lightweight electrostatic hydraulic actuator according to claim 3, characterized in that: The changing component (204) comprises a receiving groove (2041) arranged in the rotating shaft (2021), the installation groove (2022) is communicated with the receiving groove (2041), a plurality of triggering columns (2042) are fixedly connected in the receiving groove (2041), a bearing column (2043) fixed to the installation shell (211) is fixedly connected to the triggering column (2042) at the right end, the bearing column (2043) has a smaller diameter than the triggering column (2042), and a triggering pin (2044) cooperating with the plurality of triggering columns (2042) is provided on the plurality of L-shaped plates (2024).

5. The lightweight electrostatic hydraulic actuator according to claim 4, characterized in that: The multiple sections of the triggering posts (2042) correspond one-to-one to the lamp posts (2033), and the lamp posts (2033) are provided with a power-on delay.

6. The lightweight electrostatic hydraulic actuator according to claim 4 or 5, characterized in that: The rotating assembly (301) comprises an outward expansion slot (3011) fixedly connected to the mounting shell (2011), four clamping slots (3012) are provided on the side wall of the outward expansion slot (3011), a telescopic rod (3013) is fixedly connected to the display tube (2032), and a clamping strip (3014) matching the clamping slot (3012) is fixedly connected to the telescopic end of the telescopic rod (3013).

7. The lightweight electrostatic hydraulic actuator according to claim 6, characterized in that: The guide assembly (302) comprises an arc-shaped block (3021) fixedly connected to the inner wall of the mounting shell (2011), the arc-shaped block (3021) being provided with a cutting edge (3022), and the L-shaped plate (2024) being provided with an arc-shaped edge (3023) matching the cutting edge (3022).

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