Thrust detection device for electric actuating mechanism

Abstract

The invention belongs to the technical field of detection devices, and particularly discloses an electric actuating mechanism thrust detection device which comprises a fixed column, a buffer cavity is formed in the position, close to the edge of one side, of the interior of the fixed column, the inner wall of one side of the buffer cavity penetrates to the outer side of the fixed column, and a movable cavity is formed in the other side of the fixed column. A movable column is arranged between the movable cavity and the buffer cavity, a hexagonal cavity is formed in the movable column, an adjusting part is arranged in the hexagonal cavity, and an alarm device is arranged on the outer surface of the fixed column. According to the invention, through the arrangement of the adjusting member, the alarm device, the feedback assembly and the limiting assembly, when the thrust of the electric actuating mechanism is tested and the thrust of the electric actuating mechanism is greater than the upper limit of the test thrust adjusted by the adjusting member, an alarm is given in time and the equipment is limited at the same time; and damage to equipment caused by continuous forward pushing of the electric actuating mechanism is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a thrust detection device for an electric actuator. Background Art

[0002] Electric actuators are indispensable in the operation of industrial automation equipment. Whether the thrust of the electric actuator meets the design requirements directly affects whether it can drive the load to work normally. Therefore, thrust testing of electric actuators is required during production.

[0003] Currently, most methods for detecting the thrust of electric actuators use dynamometers to measure them. The internal structure of the existing dynamometers consists of a force measuring spring and an adjusting bolt. During the measurement process, when the thrust of the electric actuator is large, the force measuring spring will be compressed. After the force measuring spring is compressed to the limit position, the force measuring mechanism still moves forward. At this time, the dynamometer is easily damaged, resulting in the inability to measure accurate data. Summary of the invention

[0004] The purpose of the present invention is to provide a thrust detection device for an electric actuator, which solves the problem that in the current thrust test process, when the thrust of the electric actuator is large, the force measuring spring will be compressed, and after the force measuring spring is compressed to the limit position, the force measuring mechanism still moves forward, which can easily damage the dynamometer.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a thrust detection device for an electric actuator, comprising a fixed column, a buffer cavity is provided inside the fixed column near one side edge, an inner wall of one side of the buffer cavity penetrates to the outside of the fixed column, a movable cavity is provided on the other side of the fixed column, a movable column is provided between the movable cavity and the buffer cavity, a hexagonal cavity is provided inside the movable column, an adjusting member is provided inside the hexagonal cavity, and an alarm device is provided on the outer surface of the fixed column; A conical block is fixed at one end of the movable column, a feedback component is arranged inside the conical block, a limiting component is arranged on the inner wall of the fixed column, a flange ring is fixed to the outer surface of the fixed column near one side edge, a buffer ring is fixed to the outer surface of the movable column near one side edge, a retaining ring is fixed in the middle between the inner walls of the buffer cavity, a buffer spring is fixed to one side of the buffer ring, and one end of the buffer spring is fixed to one side inner wall of the buffer cavity.

[0006] Preferably, the adjusting member includes a hexagonal base plate, which is slidably connected to the inside of the hexagonal cavity, a compression spring is fixed to one side of the hexagonal base plate, a hexagonal push plate is fixed to one end of the compression spring, the hexagonal push plate is slidably connected to the inside of the hexagonal cavity, one end of the hexagonal push plate is rotatably connected to an adjusting bolt, the other end of the movable column is provided with a cylindrical cavity, and one end of the adjusting bolt is threadedly inserted into the inside of the cylindrical cavity.

[0007] Preferably, a connecting rod is fixed to the other side of the hexagonal base plate, one end of the connecting rod slides through one side of the conical block, a contact plate is fixed to one end of the connecting rod, the contact plate is located inside the movable cavity, a scale bar is fixed to the outer surface of the fixed column near one side edge, a through opening is opened on the top of the scale bar and penetrates into the movable cavity, a guide plate is fixed to the outer surface of the contact plate, the guide plate is located inside the through opening, and the top of the guide plate extends to the top of the scale bar, and a pointer is fixed to the top of the guide plate.

[0008] Preferably, the alarm device includes an annular light cover, which is fixed on the outer surface of a fixed column, three light strips are equidistantly fixed on the outer surface of the annular light cover, a plurality of movable rods slidably penetrated into the movable cavity are equidistantly arranged on the outer surface of the fixed column along the circumferential direction, a plurality of interfaces penetrating to the inner side are equidistantly opened on the outer surface of the annular light cover along the circumferential direction, and a plurality of copper contacts are fixed to the inner walls on both sides of the plurality of interfaces.

[0009] Preferably, one ends of the multiple movable rods extend to the interior of the interface, the other ends of the multiple movable rods are fixed with contact blocks, the multiple contact blocks are located inside the movable cavity, copper blocks are fixed on both sides of the multiple movable rods, the multiple copper blocks are correspondingly fitted with copper contacts, and wedge-shaped grooves are provided on the tops of the multiple movable rods close to the contact blocks.

[0010] Preferably, the limiting assembly includes a plurality of positioning rods, the inner wall of the fixed column is provided with a plurality of inner cavities, the plurality of positioning rods are all located inside the inner cavities, one ends of the plurality of positioning rods slide through correspondingly to fit with the outer surface of the movable rod, one side outer surface of the plurality of positioning rods is inclined near the edge of one end, the outer surfaces of the plurality of positioning rods are fixed with sliding rings, and downward pressure springs are fixed between the tops of the plurality of sliding rings and the internal top surface of the inner cavities.

[0011] Preferably, the feedback assembly includes a plurality of lifting rods, a plurality of reciprocating cavities are equidistantly opened inside the conical block along the circumferential direction, an adjustment cavity is opened in the middle of the conical block, the connecting rod is located inside the adjustment cavity, the plurality of lifting rods are all located inside the reciprocating cavity, and one end of the plurality of lifting rods correspondingly penetrates into the interior of the adjustment cavity.

[0012] Preferably, a conical ring is fixed to the outer surface of the connecting rod, and one end of the plurality of lifting rods located inside the regulating cavity is in the shape of an arc surface, and the arc surface of the lifting rod is opposite to one side of the conical ring.

[0013] Preferably, a fixing plate is fixed to the outer surface of each of the plurality of lifting rods, each of the plurality of fixing plates is correspondingly located inside the reciprocating cavity, and a lifting spring is fixed between the bottom of each of the plurality of fixing plates and the inner bottom surface of the reciprocating cavity.

[0014] Preferably, the other ends of the plurality of lifting rods slide through to the outside of the conical block, the outer surface of the conical block is provided with a plurality of notches equidistantly arranged along the circumferential direction, spring paddles are fixed inside the plurality of notches, and the other ends of the plurality of lifting rods are in contact with the inner wall of the spring paddles.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with an adjusting member, an alarm device, a feedback assembly and a limit assembly, which is conducive to timely issuing an alarm and limiting the device when the thrust of the electric actuator is greater than the upper limit of the test thrust adjusted by the adjusting member during the thrust test of the electric actuator, so as to prevent the electric actuator from continuing to push forward and causing damage to the device; 2. The present invention can adjust the upper limit of the maximum thrust of the test by providing an adjusting member. When the adjusting member is working, the compression spring is compressed by rotating the adjusting bolt, thereby changing the upper limit of the maximum thrust of the test; 3. The present invention is provided with an alarm device and a feedback component. When the thrust of the electric actuator is large, the alarm device can be triggered by the feedback component to warn people. When the feedback component is working, when the thrust of the electric actuator is large, the contact plate will be pushed to the side of the flange ring. During the pushing process, the connecting rod will be driven to move, thereby driving the movable rod to slide and control the on and off of the alarm device. When the alarm device is working, the contact between the copper block and the copper contacts at different positions is changed by the extension length of the movable rod, so that the light strips with different extensions are turned on. People can obtain the thrust of the electric actuator by observing the colors of different light strips. 4. The present invention is provided with a limit assembly, which can position the movable rod when the thrust of the electric actuator is large, thereby preventing the electric actuator from continuing to push forward. When the limit assembly is working, when the length of the movable rod extending to the outside is large, the movable rod can be positioned by the mutual engagement of the positioning rod and the wedge-shaped groove, and then the contact block and the conical block are limited to each other, so that the electric actuator can be prevented from continuing to push forward. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a three-dimensional structure of one side of a thrust detection device for an electric actuator proposed by the present invention; Figure 2 The present invention provides a three-dimensional structural schematic diagram of another side of a thrust detection device for an electric actuator; Figure 3 The present invention provides a cross-sectional three-dimensional structural schematic diagram of a thrust detection device for an electric actuator; Figure 4 The present invention provides a cross-sectional three-dimensional structural schematic diagram of a fixed column in a thrust detection device of an electric actuator; Figure 5 The present invention provides a cross-sectional three-dimensional structural schematic diagram of a movable column and a conical block in a thrust detection device of an electric actuator; Figure 6 The present invention provides a top-view stereoscopic structural diagram of a movable rod in a thrust detection device for an electric actuator; Figure 7 For the present invention Figure 3 A partial enlarged view of point A in the middle; Figure 8 For the present invention Figure 4 A magnified partial view of point B in the middle.

[0017] In the figure: 1, fixed column; 2, flange ring; 3, annular lamp cover; 4, lamp belt; 5, scale bar; 6, through-hole; 7, pointer; 8, guide plate; 9, contact plate; 10, movable cavity; 11, buffer cavity; 12, movable column; 13, buffer spring; 14, retaining ring; 15, interface; 16, copper contact; 17, conical block; 18, cylindrical cavity; 19, buffer ring; 20, adjusting bolt; 21, movable rod; 2 2. Contact block; 23. Wedge-shaped groove; 24. Copper block; 25. Down-pressing spring; 26. Hexagonal cavity; 27. Hexagonal push plate; 28. Compression spring; 29. ​​Hexagonal bottom plate; 30. Adjusting cavity; 31. Spring pick; 32. Notch; 33. Connecting rod; 34. Reciprocating cavity; 35. Lifting rod; 36. Lifting spring; 37. Fixed plate; 38. Inner cavity; 39. Positioning rod; 40. Conical ring; 41. Sliding ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-8The present invention provides a technical solution: a thrust detection device for an electric actuator, comprising a fixed column 1, a buffer cavity 11 is provided inside the fixed column 1 near one side edge, an inner wall of one side of the buffer cavity 11 penetrates to the outside of the fixed column 1, an active cavity 10 is provided on the other side of the fixed column 1, an active column 12 is provided between the active cavity 10 and the buffer cavity 11, a hexagonal cavity 26 is provided inside the active column 12, an adjusting member is provided inside the hexagonal cavity 26, and an alarm device is provided on the outer surface of the fixed column 1; A conical block 17 is fixed to one end of the movable column 12, a feedback component is arranged inside the conical block 17, a limiting component is arranged on the inner wall of the fixed column 1, a flange ring 2 is fixed to the outer surface of the fixed column 1 near one side edge, a buffer ring 19 is fixed to the outer surface of the movable column 12 near one side edge, a retaining ring 14 is fixed in the middle between the inner walls of the buffer cavity 11, a buffer spring 13 is fixed to one side of the buffer ring 19, and one end of the buffer spring 13 is fixed to one side inner wall of the buffer cavity 11.

[0020] The effect achieved is that, by providing an adjusting member, the maximum thrust upper limit of the test can be adjusted, and by using the alarm device and the feedback component, when the thrust of the electric actuator is large, the alarm device can be triggered by the feedback component to alarm people, and by providing the limit component, the movable rod 21 can be positioned when the thrust of the electric actuator is large, thereby preventing the electric actuator from continuing to push forward. The entire device is conducive to timely issuing an alarm and limiting the equipment when the thrust of the electric actuator is greater than the test thrust upper limit adjusted by the adjusting member during the thrust test of the electric actuator, thereby preventing the electric actuator from continuing to push forward and causing damage to the equipment. Before triggering the alarm device and the positioning component, the electric actuator will continue to push forward due to excessive thrust, which will drive the conical block 17 to move to one side, thereby stretching the buffer spring 13 outward, thereby buffering the thrust of the electric actuator.

[0021] like Figure 1 , Figure 3 and Figure 5As shown, the adjusting member includes a hexagonal base plate 29, which is slidably connected to the inside of the hexagonal cavity 26, a compression spring 28 is fixed to one side of the hexagonal base plate 29, and a hexagonal push plate 27 is fixed to one end of the compression spring 28. The hexagonal push plate 27 is slidably connected to the inside of the hexagonal cavity 26, and one end of the hexagonal push plate 27 is rotatably connected to the adjusting bolt 20. The other end of the movable column 12 is provided with a cylindrical cavity 18, and one end of the adjusting bolt 20 is threadedly penetrated into the inside of the cylindrical cavity 18. The other side of the hexagonal base plate 29 is fixed with A connecting rod 33, one end of which slides through one side of the conical block 17, a contact plate 9 is fixed to one end of the connecting rod 33, the contact plate 9 is located inside the movable cavity 10, a scale bar 5 is fixed to the outer surface of the fixed column 1 near one side edge, a through opening 6 is opened on the top of the scale bar 5 to penetrate into the movable cavity 10, a guide plate 8 is fixed to the outer surface of the contact plate 9, the guide plate 8 is located inside the through opening 6, and the top of the guide plate 8 extends to the top of the scale bar 5, and a pointer 7 is fixed to the top of the guide plate 8.

[0022] The effect achieved is that the compression spring 28 is compressed by rotating the adjusting bolt 20, thereby changing the upper limit of the test of its maximum thrust. During the test, the output end of the electric actuator is engaged with the contact disk 9, and then the contact disk 9 is driven to slide to one side during the pushing process of the electric actuator. During the sliding process, the pointer 7 is driven to slide on the scale bar 5 through the guide plate 8. People can judge the thrust size of the electric actuator by observing the position of the pointer 7 on the scale bar 5.

[0023] like Figure 3 , Figure 5 and Figure 7 As shown, the feedback assembly includes a plurality of lifting rods 35, a plurality of reciprocating cavities 34 are equidistantly provided inside the conical block 17 along the circumferential direction, an adjusting cavity 30 is provided in the middle of the conical block 17, a connecting rod 33 is located inside the adjusting cavity 30, a plurality of lifting rods 35 are located inside the reciprocating cavity 34, one end of the plurality of lifting rods 35 are correspondingly penetrated into the adjusting cavity 30, a conical ring 40 is fixed to the outer surface of the connecting rod 33, one end of the plurality of lifting rods 35 located inside the adjusting cavity 30 are all in an arc shape, and the arc surface of the lifting rod 35 and the conical ring 40 are aligned. On one side, the outer surfaces of the plurality of lifting rods 35 are fixed with fixing plates 37, and the plurality of fixing plates 37 are correspondingly located inside the reciprocating cavity 34. Lifting springs 36 are fixed between the bottoms of the plurality of fixing plates 37 and the inner bottom surface of the reciprocating cavity 34. The other ends of the plurality of lifting rods 35 slide through the outside of the conical block 17. The outer surface of the conical block 17 is provided with a plurality of notches 32 equidistantly along the circumferential direction, and spring paddles 31 are fixed inside the plurality of notches 32. The other ends of the plurality of lifting rods 35 are in contact with the inner wall of the spring paddle 31.

[0024] The effect achieved is that when the thrust of the electric actuator is large, the contact plate 9 will be pushed toward the side of the flange ring 2, and the connecting rod 33 will be driven to move during the pushing process. During the movement of the connecting rod 33, when the inclined surface on one side of the conical ring 40 contacts the arc surface at the bottom of the lifting rod 35, the lifting rod 35 will be lifted outward. During the lifting process of the lifting rod 35 outward, the spring paddle 31 will be lifted outward, thereby pushing the contact block 22 together with the movable rod 21 outward, and the alarm device and the limit assembly will be triggered during the pushing process of the movable rod 21 outward.

[0025] like Figure 3 and Figure 6 As shown, the alarm device includes an annular light cover 3, which is fixed on the outer surface of the fixed column 1, and three light strips 4 are fixed on the outer surface of the annular light cover 3 at equal intervals. The outer surface of the fixed column 1 is provided with multiple movable rods 21 that slide through the inside of the movable cavity 10 at equal intervals along the circumferential direction. The outer surface of the annular light cover 3 is provided with multiple interfaces 15 that penetrate to the inside at equal intervals along the circumferential direction, and multiple copper contacts 16 are fixed to the inner walls on both sides of the multiple interfaces 15. One ends of the multiple movable rods 21 extend to the inside of the interfaces 15 correspondingly, and the other ends of the multiple movable rods 21 are fixed with contact blocks 22, and the multiple contact blocks 22 are located inside the movable cavity 10. Copper blocks 24 are fixed on both sides of the multiple movable rods 21, and the multiple copper blocks 24 are correspondingly fitted with the copper contacts 16. Wedge-shaped grooves 23 are provided on the tops of the multiple movable rods 21 close to the contact blocks 22.

[0026] The effect achieved is that the three light strips 4 on the alarm device are green, yellow and red respectively, among which green represents normal thrust, the green light strip 4 is located at the bottom, and the copper contact 16 controlling the green light strip 4 is close to the innermost side of the interface 15, the red light strip 4 is located at the top, and the copper contact 16 controlling the red light strip 4 is close to the outermost side of the interface 15, the yellow light strip 4 is located between the green light strip 4 and the green light strip 4, and the copper contact 16 controlling the yellow light strip 4 is in the middle of the interface 15, when the movable rod 21 is in the initial position, the copper block 24 on the movable rod 21 contacts the copper contact 16 of the green light strip 4, and when the thrust of the electric actuator does not reach the maximum thrust upper limit adjusted by the adjusting component, as the electric actuator extends, the movable rod 21 will also extend outward accordingly, at the arc of the conical ring 40 and one end of the lifting rod 35. When the surfaces contact each other, the lifting rod 35 will be lifted outward, and the spring pick 31 will be lifted outward during the lifting process of the lifting rod 35, thereby pushing the contact block 22 together with the movable rod 21 outward until they contact with the copper contact 16 of the yellow light strip 4. When the thrust of the electric actuator reaches the maximum thrust upper limit adjusted by the adjustment component, the conical block 17 will be driven to slide to one side, so that the buffer spring 13 is stretched outward, and the thrust of the electric actuator is buffered by the elastic tension of the buffer spring 13. At the same time, when the conical block 17 slides to one side, the movable rod 21 will be further lifted outward, so that the copper block 24 on the movable rod 21 contacts with the copper contact 16 of the red light strip 4. The red light strip 4 can emit light to alert people and trigger the limit assembly to limit and fix the movable rod 21.

[0027] like Figure 3 , Figure 4 and Figure 8 As shown, the limit assembly includes a plurality of positioning rods 39, and the inner wall of the fixed column 1 is provided with a plurality of inner cavities 38, and the plurality of positioning rods 39 are all located inside the inner cavities 38, and one end of the plurality of positioning rods 39 slides through correspondingly to fit with the outer surface of the movable rod 21, and the outer surface of one side of the plurality of positioning rods 39 is inclined near the edge of one end, and the outer surfaces of the plurality of positioning rods 39 are fixed with sliding rings 41, and downward pressure springs 25 are fixed between the top of the plurality of sliding rings 41 and the inner top surface of the inner cavity 38.

[0028] The effect achieved is that when the movable rod 21 extends outward to a large extent, the movable rod 21 can be positioned by the mutual engagement of the positioning rod 39 and the wedge-shaped groove 23, and then the mutual limitation of the contact block 22 and the conical block 17 can prevent the electric actuator from continuing to push forward.

[0029] Working principle: When using this device, the compression spring 28 is compressed by rotating the adjusting bolt 20, thereby changing the upper limit of the test of its maximum thrust. During the test, the output end of the electric actuator is engaged with the contact plate 9, and then the contact plate 9 is driven to slide to one side during the pushing process of the electric actuator. During the sliding process, the pointer 7 is driven to slide on the scale bar 5 through the guide plate 8. People can judge the thrust of the electric actuator by observing the position of the pointer 7 on the scale bar 5. When the electric actuator When the thrust is in a normal state, the contact plate 9 and the connecting rod 33 will be driven to slide to one side. At this time, the copper block 24 on the movable rod 21 will contact the copper contact 16 of the green light strip 4, and the green light strip 4 will light up. As the output end of the electric actuator extends outward, the connecting rod 33 will be driven to slide to one side. In the process of the connecting rod 33 sliding to one side, the conical ring 40 will be driven to move. When the conical ring 40 contacts the arc surface of one end of the lifting rod 35, the lifting rod 35 will be lifted outward. In the process of the lifting rod 35 lifting outward, the spring paddle 31 will be pushed to the outside. The outer side is lifted, thereby pushing the contact block 22 together with the movable rod 21 outward until they contact with the copper contact 16 of the yellow light strip 4. When the thrust of the electric actuator reaches the maximum thrust upper limit of the adjustment component, the conical block 17 will be driven to slide to one side, so that the buffer spring 13 is stretched outward, and the thrust of the electric actuator is buffered by the elastic tension of the buffer spring 13. At the same time, when the conical block 17 slides to one side, the movable rod 21 will be further lifted outward, so that the copper block 24 on the movable rod 21 is in contact with the red light strip 4. The copper contact 16 of the movable rod 21 comes into contact with the red light strip 4, which can alert people after it lights up. At the same time, when the wedge-shaped groove 23 slides to a position opposite to one end of the positioning rod 39 during the sliding process of the movable rod 21, the bottom of the positioning rod 39 is pressed into the interior of the wedge-shaped groove 23 under the elastic pressure of the downward pressure spring 25, thereby positioning the movable rod 21 to prevent the movable rod 21 from continuing to extend outward. When the positioning rod 39 extends into the wedge-shaped groove 23, the inclined surface inside the wedge-shaped groove 23 fits with the inclined surface at the bottom end of the positioning rod 39, which is convenient for subsequent resetting.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thrust detection device for an electric actuator, characterized in that: The invention comprises a fixed column (1), wherein a buffer cavity (11) is provided inside the fixed column (1) near one side edge, an inner wall of one side of the buffer cavity (11) penetrates to the outside of the fixed column (1), an active cavity (10) is provided on the other side of the fixed column (1), a movable column (12) is provided between the active cavity (10) and the buffer cavity (11), a hexagonal cavity (26) is provided inside the movable column (12), an adjusting member is provided inside the hexagonal cavity (26), and an alarm device is provided on the outer surface of the fixed column (1); A conical block (17) is fixed to one end of the movable column (12), a feedback component is arranged inside the conical block (17), a limit assembly is arranged on the inner wall of the fixed column (1), a flange ring (2) is fixed to the outer surface of the fixed column (1) near one side edge, a buffer ring (19) is fixed to the outer surface of the movable column (12) near one side edge, a retaining ring (14) is fixed in the middle between the inner walls of the buffer cavity (11), a buffer spring (13) is fixed to one side of the buffer ring (19), and one end of the buffer spring (13) is fixed to one side inner wall of the buffer cavity (11).

2. The thrust detection device of an electric actuator according to claim 1, characterized in that: The adjusting member comprises a hexagonal base plate (29), the hexagonal base plate (29) is slidably connected to the inside of the hexagonal cavity (26), a compression spring (28) is fixed to one side of the hexagonal base plate (29), one end of the compression spring (28) is fixed to a hexagonal push plate (27), the hexagonal push plate (27) is slidably connected to the inside of the hexagonal cavity (26), one end of the hexagonal push plate (27) is rotatably connected to an adjusting bolt (20), the other end of the movable column (12) is provided with a cylindrical cavity (18), one end of the adjusting bolt (20) is threadedly inserted into the inside of the cylindrical cavity (18).

3. The thrust detection device of an electric actuator according to claim 2, characterized in that: A connecting rod (33) is fixed to the other side of the hexagonal base plate (29), one end of the connecting rod (33) slides through one side of the conical block (17), a contact plate (9) is fixed to one end of the connecting rod (33), the contact plate (9) is located inside the movable cavity (10), a scale bar (5) is fixed to the outer surface of the fixed column (1) near one side edge, a through opening (6) is opened at the top of the scale bar (5) and penetrates into the movable cavity (10), a guide plate (8) is fixed to the outer surface of the contact plate (9), the guide plate (8) is located inside the through opening (6), and the top of the guide plate (8) extends to the top of the scale bar (5), and a pointer (7) is fixed to the top of the guide plate (8).

4. The thrust detection device for an electric actuator according to claim 3, characterized in that: The alarm device comprises an annular light cover (3), the annular light cover (3) being fixed on the outer surface of a fixed column (1), three light strips (4) being fixed on the outer surface of the annular light cover (3) at equal intervals, a plurality of movable rods (21) being slidably penetrated into the interior of the movable cavity (10) being arranged on the outer surface of the fixed column (1) at equal intervals along the circumferential direction, a plurality of interfaces (15) being arranged on the outer surface of the annular light cover (3) at equal intervals along the circumferential direction and penetrating to the inner side, and a plurality of copper contacts (16) being fixed on the inner walls on both sides of the plurality of interfaces (15).

5. The thrust detection device for an electric actuator according to claim 4, characterized in that: One end of each of the movable rods (21) extends to the inside of the interface (15), and a contact block (22) is fixed to the other end of each of the movable rods (21). Each of the contact blocks (22) is located inside the movable cavity (10). Copper blocks (24) are fixed to both sides of each of the movable rods (21). Each of the copper blocks (24) is in contact with the copper contact (16). A wedge-shaped groove (23) is provided on the top of each of the movable rods (21) near the contact block (22).

6. The thrust detection device for an electric actuator according to claim 5, characterized in that: The limit assembly comprises a plurality of positioning rods (39), the inner wall of the fixed column (1) is provided with a plurality of inner cavities (38), the plurality of positioning rods (39) are all located inside the inner cavities (38), one end of the plurality of positioning rods (39) slides through to fit the outer surface of the movable rod (21), one side outer surface of the plurality of positioning rods (39) is inclined near the edge of one end, the outer surfaces of the plurality of positioning rods (39) are all fixed with sliding rings (41), and downward pressure springs (25) are fixed between the top of the plurality of sliding rings (41) and the inner top surface of the inner cavity (38).

7. The thrust detection device for an electric actuator according to claim 6, characterized in that: The feedback component comprises a plurality of lifting rods (35), a plurality of reciprocating cavities (34) are equidistantly provided inside the conical block (17) along the circumferential direction, an adjusting cavity (30) is provided in the middle of the conical block (17), the connecting rod (33) is located inside the adjusting cavity (30), the plurality of lifting rods (35) are all located inside the reciprocating cavity (34), and one end of the plurality of lifting rods (35) is correspondingly passed through the inside of the adjusting cavity (30).

8. The thrust detection device for an electric actuator according to claim 7, characterized in that: A conical ring (40) is fixed to the outer surface of the connecting rod (33), and one end of the plurality of lifting rods (35) located inside the regulating cavity (30) is in the shape of an arc surface, and the arc surface of the lifting rod (35) is opposite to one side of the conical ring (40).

9. The thrust detection device for an electric actuator according to claim 8, characterized in that: A fixing plate (37) is fixed to the outer surface of each of the plurality of lifting rods (35), each of the plurality of fixing plates (37) is correspondingly located inside the reciprocating cavity (34), and a lifting spring (36) is fixed between the bottom of each of the plurality of fixing plates (37) and the inner bottom surface of the reciprocating cavity (34).

10. The thrust detection device of an electric actuator according to claim 9, characterized in that: The other ends of the plurality of lifting rods (35) are slidably penetrated to the outside of the conical block (17), the outer surface of the conical block (17) is provided with a plurality of notches (32) equidistantly along the circumferential direction, a spring pick (31) is fixed inside the plurality of notches (32), and the other ends of the plurality of lifting rods (35) are in contact with the inner wall of the spring pick (31).

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