Lightweight electro-hydrostatic actuator

Abstract

The invention relates to the field of electro-hydrostatic actuators, in particular to a lightweight electro-hydrostatic actuator which comprises a liquid path component, a sliding bin, a piston arranged in the sliding bin, a plunger arranged on the piston, a control bin arranged at an opening in the left end of the upper side of the sliding bin, and three sliding plugs arranged in the control bin. The connecting column is arranged on the sliding plug, the quantitative hydraulic pump is arranged at the upper end of the control bin, and the pipeline is arranged among the sliding bin, the control bin and the quantitative hydraulic pump. The warning component comprises a containing assembly arranged on the control bin, a sliding assembly arranged on the containing assembly, a light assembly arranged on the containing assembly and a changing assembly arranged on the light assembly. The replacement component comprises a rotating assembly arranged on the containing assembly, warning can be carried out when the spring cannot be completely reset, the spring can be rapidly replaced, and it is guaranteed that the pipeline is accurately connected and disconnected.

Description

Technical Field

[0001] The invention relates to the field of electrostatic hydraulic actuators, in particular to a lightweight electrostatic hydraulic actuator. Background Art

[0002] Electrostatic hydraulic actuator is a technology that combines the advantages of power transmission and hydraulic actuation. It is widely used in aircraft and industrial fields. It drives the hydraulic pump through an electric motor to provide hydraulic power to generate actuator output. The development trend of electrostatic hydraulic actuator includes higher power density, lightweight, etc. In recent years, young and lightweight electrostatic hydraulic actuators have developed rapidly.

[0003] During use, the lightweight electrostatic hydraulic actuator is mainly composed of a quantitative hydraulic pump, a control chamber, pipelines and a sliding chamber. When in use, the control chamber controls the on-and-off of the pipeline, allowing the quantitative hydraulic pump to pump fluid 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 by the cooperation of the spring and the electromagnet. After using this method for a period of time, due to the fatigue strength of the spring, it is inevitable that it cannot be reset to the required position when resetting. The existing electrostatic hydraulic actuator cannot detect whether the sliding plug is reset. Therefore, when the spring cannot be reset to the required position, a pipeline on-off error will occur, affecting the overall use of the electrostatic hydraulic actuator. Summary of the invention

[0005] In view of the problem in the above or prior art that the spring cannot be reset to the desired position after being used for a period of time, causing pipeline disconnection errors and affecting the overall use of the electrostatic hydraulic actuator, the present invention is proposed.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: including fluid circuit components, 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, including 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, including a rotating component arranged on the housing component, a guiding component arranged on the rotating component, a locking component arranged on the sliding component, and a replacement component arranged on the housing component.

[0007] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the accommodating assembly includes a mounting shell fixedly connected to the side wall of the control compartment, 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 solution of the lightweight electrostatic hydraulic actuator of the present invention, the sliding assembly includes a rotating shaft rotatably connected in the mounting shell, the rotating shaft is provided with four mounting grooves, a vertical plate and an L-shaped plate are slidably connected in the mounting grooves, the vertical plate and the L-shaped plate are fixedly connected with a disc, and the two discs are elastically connected by a spring.

[0009] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the bright light component includes a through-hole arranged on the mounting shell, a display tube is rotatably connected in the through-hole, and a plurality of lamp posts of different colors are fixedly connected in the display tube.

[0010] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, wherein: the changing component includes a receiving groove arranged in the rotating shaft, the installation groove is communicated with the receiving groove, and multiple sections of trigger columns are fixedly connected in the receiving groove, and a bearing column fixed to the mounting shell is fixedly connected to the trigger column at the right end, and the diameter of the bearing column is smaller than the diameter of the trigger column, and the multiple sections of the L-shaped plates are provided with trigger pins that cooperate with the multiple sections of trigger columns.

[0011] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the multiple sections of the trigger posts correspond to the lamp posts one by one, and the lamp posts are provided with a power-on delay.

[0012] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the rotating assembly includes an outward expansion groove fixedly connected to the mounting shell, four card slots are provided on the side wall of the outward expansion groove, a telescopic rod is fixedly connected to the display tube, and the telescopic end of the telescopic rod is fixedly connected to a card strip that cooperates with the card slot.

[0013] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the guide assembly includes an arc block fixedly connected to the inner wall of the mounting shell, the arc block is provided with a cutting edge, and the L-shaped plate is provided with an arc edge matching the cutting edge.

[0014] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the locking assembly includes a first L-shaped locking block fixedly connected to the sliding plug, a second locking block matched with the first locking block is fixedly connected to the disc, an anti-slip block matched with the second locking block is fixedly connected to the first locking block, and the vertical side of the second locking block is located between the second locking block and the anti-slip block.

[0015] As a preferred solution of the lightweight electrostatic hydraulic actuator of the present invention, the replacement component includes an exploration port arranged on the mounting shell, the upper end of the exploration port is fixedly connected to a cover plate by bolts, and L-shaped openings are provided on the two discs, the L-shaped plates are inserted into the L-shaped openings, and the two L-shaped openings are provided with pins that abut against the L-shaped plates and the vertical plates.

[0016] The beneficial effects of the lightweight electrostatic hydraulic actuator of the present invention are as follows: by arranging liquid circuit components and warning components, an alarm can be automatically issued when the spring cannot be reset to the required position, and the warning process is a continuous process (i.e., a reminder can be issued when the spring just cannot be reset a little). The replacement time and the continued use time can be determined according to the color of the light pole on the display tube, thereby avoiding waste of spring use. Moreover, by replacing components, when replacing the spring, only the card block needs to be pulled and then rotated. The use is convenient and the replacement is quick, thereby solving the problem that the spring cannot be reset to the required position after being used for a period of time, causing pipeline on-off errors and affecting the overall use of the electrostatic hydraulic actuator. The effect of issuing a warning when the spring cannot be completely reset and being able to quickly replace the spring is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 A cross-sectional view of the sliding compartment of a lightweight electrostatic hydraulic actuator.

[0019] Figure 2 A schematic diagram of the external structure of the housing assembly of a lightweight electrostatic hydraulic actuator.

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of .

[0021] Figure 4 A schematic diagram of the cross-sectional structure of the modified components of a lightweight electrostatic hydraulic actuator.

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at B.

[0023] Figure 6 Schematic diagram of the internal structure of the mounting shell of a lightweight electrostatic hydraulic actuator.

[0024] Figure 7 Schematic diagram of the external structure of the rotating shaft of a lightweight electrostatic hydraulic actuator.

[0025] In the figure: 100, liquid circuit component; 101, sliding chamber; 102, piston; 103, plunger; 104, control chamber; 105, sliding plug; 106, connecting column; 107, quantitative hydraulic pump; 108, pipeline; 200, warning component; 201, containing component; 2011, mounting shell; 2012, opening; 2013, electromagnet; 2014, iron block; 202, sliding component; 2021, rotating shaft; 2022, mounting groove; 2023, vertical plate; 2024, L-shaped plate; 2025, disc; 2026, spring; 203, bright light component; 2031, through-hole; 2032, display tube; 2033 , lamp post; 204, change component; 2041, accommodating groove; 2042, trigger column; 2043, bearing column; 2044, trigger pin; 300, replacement parts; 301, rotating component; 3011, outward expansion groove; 3012, card slot; 3013, telescopic rod; 3014, card strip; 302, guide component; 3021, arc block; 3022, cutting edge; 3023, arc edge; 303, locking component; 3031, first card block; 3032, second card block; 3033, anti-drop block; 304, replacement component; 3041, exploration entrance; 3042, cover plate; 3043, L-shaped opening; 3044, latch. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] Example 1, reference Figure 1 to Figure 7, which is the first embodiment of the present invention, and provides a lightweight electrostatic hydraulic actuator, which can realize the effect of automatically reminding when the spring 2026 in the control chamber 104 cannot be reset to the required position, and includes a fluid circuit component 100, including 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 arranged at the left end opening 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 quantitative hydraulic pump 107 arranged at the upper end of the control chamber 104, and a hydraulic pump 108 arranged on the sliding chamber 101. 01, a control compartment 104, and a pipe 108 between a quantitative hydraulic pump 107; a warning component 200, including 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, including a rotating component 301 arranged on the receiving 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 receiving component 201.

[0028] Specifically, the plunger 103 here can slide left and right, and the control chamber 104 controls the on-off of the pipeline 108, and then the left and right movement of the piston 102 is realized through hydraulics, driving the plunger 103 to move. The quantitative hydraulic pump 107 here can automatically provide hydraulics to pump liquid. The above sliding chamber 101, control chamber 104, quantitative hydraulic pump 107 and their internal structure form an electrostatic hydraulic actuator. The electrostatic hydraulic actuator is a prior art and will not be described here.

[0029] Furthermore, the accommodating component 201 includes a mounting shell 2011 fixedly connected to the side wall of the control compartment 104, the mounting shell 2011 is provided with an opening 2012, an electromagnet 2013 is fixedly connected in the opening 2012, and 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, the rotating shaft 2021 is provided with four mounting grooves 2022, a vertical plate 2023 and an L-shaped plate 2024 are slidingly connected in the mounting groove 2022, a disc 2025 is fixedly connected to the vertical plate 2023 and the L-shaped plate 2024, the two discs 2025 are elastically connected by a spring 2026, and 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 detaching from the mounting groove 2022.

[0030] Among them, no liquid (commonly used hydraulic oil) will pass between the leftmost sliding plug 105 and the electromagnet 2013, so there is no need to worry about liquid entering the mounting shell 2011. When the electromagnet 2013 is energized, the iron block 2014 can move toward the electromagnet 2013, driving the sliding plug 105 to move, so that the liquid in the quantitative hydraulic pump 107 can enter the sliding compartment 101 through the pipeline 108 and the control compartment 104 to push the piston 102 to move.

[0031] Preferably, the bright light component 203 includes a through opening 2031 arranged on the mounting shell 2011, a display tube 2032 is rotatably connected in the through opening 2031, and a plurality of lamp posts 2033 of different colors are fixedly connected in the display tube 2032; the changing component 204 includes a receiving groove 2041 arranged in the rotating shaft 2021, the mounting groove 2022 is communicated with the receiving groove 2041, a plurality of sections of triggering columns 2042 are fixedly connected in the receiving groove 2041, a bearing column 2043 fixed to the mounting shell 2011 is fixedly connected to the right end trigger column 2042, the diameter of the bearing column 2043 is smaller than the diameter of the trigger column 2042, and a trigger pin 2044 cooperating with the multi-section trigger column 2042 is provided on the multi-section L-shaped plate 2024; the multi-section trigger column 2042 corresponds one-to-one with the lamp post 2033, and the lamp post 2033 is provided with a power-on delay.

[0032] It should be noted that the purpose of the power-on delay here is that when the normal movement of the slider 105 drives the L-shaped plate 2024 to move, the trigger pin 2044 on the L-shaped plate 2024 cooperates with the trigger column 2042 to prevent the lamp column 2033 from lighting up, thereby avoiding misjudgment caused by the lamp column 2033 lighting up when the slider 105 moves normally.

[0033] When in use, when the slide plug 105 moves, the disk 2025 is pushed to move, so that the L-shaped plate 2024 moves, the spring 2026 is compressed, and after the spring 2026 is normally reset, the trigger pin 2044 is on the right side of the trigger column 2042. At this time, the lamp post 2033 is not lit. When the spring 2026 cannot be completely reset after being used for many times, the trigger pin 2044 on the L-shaped plate 2024 cannot move to the right side of the trigger column 2042. The trigger pin 2044 and the trigger column 2042 are against each other, so that the lamp post 2033 is lit, so that it can be directly known that the spring 2026 is not completely reset. Here, the trigger column 2042 is provided with multiple And multiple trigger columns 2042 correspond to different lamp columns 2033, so that when the degree of incomplete reset of the spring 2026 is different, the color of the corresponding lamp column 2033 is different, and the color of the display column is different. According to the color displayed on the display column, it can be judged whether it needs to be replaced. Since the sliding plug 105 has a certain thickness, this thickness is generally greater than the pipe 108. When the spring 2026 is only slightly not reset, the spring 2026 can continue to be used. When it is more, the color of the display column is different, so that the recovery state can be directly understood according to the color. The material of the display tube 2032 here is a transparent acrylic plate, which will not block the observation of the light emission of the lamp beads.

[0034] In summary, by providing the liquid path component 100 and the warning component 200, when the spring 2026 cannot be reset to the desired position, a light warning can be automatically given, and different colors of light are emitted according to the degree of reset of the spring 2026. Whether the spring 2026 needs to be replaced is determined based on the color of the light, thereby preventing the failure of the spring 2026 to reset from affecting the overall use.

[0035] Example 2, reference Figure 1 to Figure 7 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a lightweight replacement component 300 for the electrostatic hydraulic actuator, which solves the problem of how to quickly replace the spring 2026. It includes a rotating assembly 301, including an outer expansion groove 3011 fixedly connected to the mounting shell 2011, and four card slots 3012 are provided on the side wall of the outer expansion groove 3011. A telescopic rod 3013 is fixedly connected to the display tube 2032, and a card strip 3014 that cooperates with the card slot 3012 is fixedly connected to the telescopic end of the telescopic rod 3013. The guide assembly 302 includes a fixed connection to the mounting shell 2011. An arc block 3021 is arranged on the inner wall of the housing 2011, a cutting edge 3022 is arranged on the arc block 3021, and an arc edge 3023 cooperating with the cutting edge 3022 is arranged on the L-shaped plate 2024; the engaging assembly 303 comprises an L-shaped first clamping block 3031 fixedly connected to the sliding plug 105, a second clamping block 3032 cooperating with the first clamping block 3031 is fixedly connected to the disc 2025, an anti-slipping block 3033 cooperating with the second clamping block 3032 is fixedly connected to the first clamping block 3031, and a vertical side of the second clamping block 3032 is located between the second clamping block 3032 and the anti-slipping block 3033.

[0036] Specifically, the number of the slots 3012 and the L-shaped plates 2024 is equal, so that each time the slots 3012 are switched, it can be ensured that the slots 3012 and the card strips 3014 are directly opposite each other. There is damping between the card strips 3014 and the slots 3012. When the card strips 3014 enter the slots 3012, they will not automatically detach, thereby ensuring the stability of the card strips 3014. The outer end of the arc-shaped plate here extends to the outside of the control compartment 104, thereby ensuring that when the disc 2025 is reset, it will not collide with the control compartment 104. There is a gap between the upper end of the vertical side of the second card block 3032 and the bottom of the horizontal side of the first card block 3031, thereby preventing the first card block 3031 and the second card block 3032 from getting stuck when the disc 2025 rotates around the rotating shaft 2021.

[0037] When in use, when the reset of one spring 2026 does not meet the requirement, the telescopic rod 3013 is pulled to separate the card strip 3014 from the card slot 3012, and then the telescopic rod 3013 is rotated clockwise (from the left end, the same below) to rotate the display tube 2032 clockwise, so that the rotation shaft 2021 rotates clockwise, so that the lowermost L-shaped plate 2024 rotates around the rotation shaft 2021. Here, the diameter of the disk 2025 is smaller than the diameter of the control chamber 104, so that a gap is left between the disk 2025 and the inner wall of the control chamber 104. When the L-shaped plate 2024 rotates around the rotation shaft 2021, the arc edge 3023 on the L-shaped plate 2024 and the cut edge 3023 on the arc plate 22 cooperates, so that the L-shaped plate 2024 moves toward the vertical plate 2023, so that the disk 2025 at the right end moves toward the vertical plate 2023, so that the disk 2025 slowly leaves the sliding bin 101. Here, it is necessary to control the slope of the cutting edge 3022 on the arc plate to ensure that before the disk 2025 abuts against the inner wall of the sliding bin 101, the disk 2025 has left the sliding bin 101, thereby avoiding the phenomenon of the disk 2025 being stuck with the inner wall of the sliding bin 101. When the new spring 2026 is sent into the sliding bin 101, the arc edge 3023 on the L-shaped plate 2024 first abuts against the arc edge 3023 on the sliding bin 101 before the L-shaped plate 2024 moves to the sliding bin 101. The plate cutting edge 3022 abuts against each other, so that the L-shaped plate 2024 moves to the left side of the sliding bin 101, and avoids the L-shaped plate 2024 and the side wall of the sliding bin 101 from getting stuck 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 disc 2025 and the left side wall of the sliding bin 101 abutting against each other when the L-shaped plate 2024 is reset. When the disc 2025 moves into the sliding bin 101, the front side wall of the disc 2025 abuts against the inner wall of the sliding bin 101. As the disc 2025 revolves around the rotating shaft 202 1 continues to rotate, which can drive the second clamping block 3032 to be clamped between the first clamping block 3031 and the anti-slip block 3033, so that when the slide plug 105 moves, the disc 2025 moves, driving the spring 2026 to be compressed, and avoiding the disc 2025 and the slide plug 105 from moving apart. 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 when the second clamping block 3032 rotates out, it will not get stuck. The number of the clamping strips 3014 here is equal to the number of the springs 2026, so that each time the clamping block and the clamping slot 3012 are facing each other, the center of the disc 2025 is in line with the center of the sliding bin 101.

[0038] In summary, by setting up the replacement component 300, when the spring 2026 needs to be replaced, it is only necessary to pull the telescopic rod 3013 and then rotate the clamping bar 3014 so that the clamping bar 3014 is aligned with the clamping slot 3012 again, and the old spring 2026 can be automatically pulled out of the sliding bin 101 and the new spring 2026 can be pushed into the sliding bin 101, ensuring that the sliding plug 105 can be reset to the required position.

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

[0040] Specifically, when replacing the spring 2026 in the installation shell 2011, the shaft 2021 is rotated counterclockwise. In this way, the wires (referring to the wires between the lamp post 2033 and the trigger post 2042) are not entangled all the time and thus will not get stuck. Of course, since the lamp post 2033 requires a smaller current, it can also be powered by induction. Inductive power supply is a prior art and will not be elaborated here.

[0041] During use, when multiple springs 2026 are damaged, it is only necessary to turn the bolt and remove the cover plate 3042. At this time, the hand can be inserted into the exploration port 3041 and the latch 3044 can be turned to separate the disc 2025, the L-shaped plate 2024 and the vertical plate 2023. At this time, the two discs 2025 and the spring 2026 can be taken out, and then a new spring 2026 can be placed between the two discs 2025, and then the vertical plate 2023 or the L-shaped plate 2024 and the disc 2025 can be fixed again. Here, the disc 2025 and the spring 2026 can be set as a group for replacement of the entire group, or the disc 2025 and the spring 2026 can be set to be detachably connected. The method here is not limited, and the specific convenience of use is the main thing.

[0042] In summary, by setting up the replacement component 304, after multiple springs 2026 are damaged, the installation shell 2011 can be opened and the multiple damaged springs 2026 can be replaced, thereby ensuring the performance of the springs 2026, avoiding the damaged springs 2026 from being replaced again, and ensuring that the slide plug 105 can be reset to the desired 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 it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in 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).

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 sliding assembly (202) comprises a rotating shaft (2021) rotatably connected in the mounting shell (2011), 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 (2026).

4. The lightweight electrostatic hydraulic actuator according to claim 3, 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).

5. The lightweight electrostatic hydraulic actuator according to claim 4, 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).

6. The lightweight electrostatic hydraulic actuator according to claim 5, 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.

7. The lightweight electrostatic hydraulic actuator according to claim 5 or 6, 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).

8. The lightweight electrostatic hydraulic actuator according to claim 7, 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).

9. The lightweight electrostatic hydraulic actuator according to claim 8, characterized in that: 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).

10. The lightweight electrostatic hydraulic actuator according to claim 8 or 9, characterized in that: 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).

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