Double-chamber electric actuator with correlation type photoelectric positioning function

Abstract

A double-chamber electric actuator with a correlation type photoelectric positioning function comprises an outer box body in which a first chamber is formed; the surrounding plate assembly divides the first cavity into a second cavity, and a motor, a transmission gear assembly and an output valve rod are arranged in the second cavity; the inner cover plate covers the coaming assembly; the transmission gear assembly comprises a position monitoring gear, and a light-transmitting detection hole is formed in the position monitoring gear; a containing groove is formed in the side wall of the second cavity, a photoelectric circuit board is arranged in the containing groove, a photoelectric correlation sensor is arranged on the photoelectric circuit board, and the position monitoring gear extends into a monitoring area of the photoelectric correlation sensor; the rear end of the accommodating groove is provided with a wiring groove; when the surrounding plate assembly is covered with the inner cover plate, the containing groove is shielded by the inner cover plate, so that a dark environment is formed in the second cavity. According to the utility model, the position monitoring gear (with a light-transmitting detection hole) is specially made and is matched with the photoelectric correlation sensor, so that the resolution ratio is higher, and the monitoring accuracy is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of actuator, especially a double -chamber electric actuator with opposite -emission type photoelectric positioning function. BACKGROUND

[0002] Flow measurement instruments, such as water meters, electricity meters, gas meters, etc. have become essential equipment in daily life and production. For example, a traditional water meter includes a water meter shell and a meter movement inside the water meter shell. The meter movement is basically a mechanical digital dial that records the measurement value. Intelligent instruments combine actuators with traditional instruments to achieve the function of intelligent control of instrument switches. An actuator is an actuating mechanism and control valve combination in an automatic control system. Its role in the automatic control system is to accept signals from the regulator and adjust the flow of process media based on its position and characteristics in the process pipeline, thereby controlling the controlled number within the required range of the production process.

[0003] To achieve the automatic switching and adjustment function of instruments, an actuator component is added to the instruments. Actuators are divided into pneumatic actuators, electric actuators, and hydraulic actuators. Pneumatic actuators are large in size, complex in wiring, and require a gas source. Hydraulic actuators are large in size, complex in structure, and high in cost, and are generally suitable for large-scale workplaces. Therefore, the most commonly used actuator for civilian use is the electric actuator. An electric actuator is a drive device that can provide linear or rotary motion. It uses a certain driving energy and works under the action of a certain control signal. The actuator uses liquid, gas, electricity, or other energy and converts it into driving action through a motor, air cylinder, or other device.

[0004] Prior art example, refer to patent document CN220850949U, discloses a kind of electric actuator with double box body and convenient to maintain, including outer box body, forming first chamber, power supply assembly is arranged in first chamber;Inner box body, second chamber is formed inside, electric component is arranged in second chamber;Surrounding board assembly, formed by the bottom of outer box body upwardly protruding, inner box body is installed in the upper end of surrounding board assembly, third chamber is formed between inner box body and surrounding board assembly, transmission gear assembly and output valve stem are arranged in third chamber;Surrounding board assembly includes inner ring surrounding board and outer ring surrounding board, inner ring surrounding board and outer ring surrounding board form surrounding board gap, and connecting column is arranged at surrounding board gap, inner box body is fixedly connected with connecting column by fastener.The utility model adopts the double box body structure composed of inner box body and outer box body, electric component is installed in second chamber, so that inner box body and outer box body can play a protective effect on electric component, i.e. double sealing protection effect.

[0005] The above technical examples are prior art technical solutions applied by the applicant in 2023. In actual use, many products have similar defects, mainly including: 1. The shielding structure near the photoelectric positioning sensor is not sufficient, and there is a certain light leakage phenomenon (a perspective plate is arranged in the observation area, light enters the first chamber through the perspective plate, and then enters the third chamber through the detection window), which interferes with the monitoring of the photoelectric positioning sensor, resulting in inaccurate monitoring;

[0006] 2. The positioning gear lacks a positioning detection feature, which can easily cause the photoelectric positioning sensor to make an incorrect prediction of the rotation angle of the positioning gear, thereby preventing the valve from being normally used.

[0007] Therefore, it is necessary to improve the existing products. SUMMARY

[0008] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a double-chamber electric actuator with a pair of photoelectric positioning functions.

[0009] The technical scheme for solving the technical problems of the utility model is as follows: a double-chamber electric actuator with a pair of photoelectric positioning functions, comprising:

[0010] An outer box body forms a first chamber inside, and a power supply assembly is arranged in the first chamber;

[0011] A surrounding plate assembly is formed by the bottom of the outer box body protruding upward, the surrounding plate assembly separates a second chamber in the first chamber, and a motor, a transmission gear assembly, and an output valve rod are arranged in the second chamber;

[0012] An inner cover plate is installed at the upper end of the surrounding plate assembly to close the upper end of the second chamber;

[0013] The transmission gear assembly comprises an input gear, a plurality of reduction gears, and an output gear connected in sequence, wherein one of the reduction gears is a position monitoring gear, and a plurality of light transmission detection holes are formed in the position monitoring gear;

[0014] A containing groove is formed in the side wall of the second chamber, a photoelectric circuit board is arranged in the containing groove, the photoelectric circuit board is integrated with a photoelectric pair of sensors, and the position monitoring gear at least partially extends into the monitoring area of the photoelectric pair of sensors;

[0015] The rear end of the containing groove also has a wiring groove, and the wiring groove is communicated with the containing groove; when the inner cover plate is arranged on the surrounding plate assembly, the inner cover plate shields the containing groove to form a dark environment inside the second chamber; and the inner cover plate and the wiring groove are staggered to expose the upper end of the wiring groove.

[0016] More specifically, the accommodating groove is communicated with the wiring slot through a transition channel, and a projection area of the transition channel is smaller than a projection area of the photoelectric circuit board, when the photoelectric circuit board is assembled into the accommodating groove, the photoelectric circuit board completely isolates the transition channel from the second cavity; the upper end of the photoelectric circuit board abuts against the inner cover plate, and the lower end of the photoelectric circuit board abuts against the bottom of the accommodating groove.

[0017] Preferably, the bottom of the first cavity is convexly provided with a plurality of raised ribs, and the power supply assembly is placed on the raised ribs, so that a first raised area is formed between the power supply assembly and the bottom of the first cavity.

[0018] In some embodiments of the utility model, the second cavity is provided with a lower framework plate and an upper framework plate, the motor is arranged at the upper end of the upper framework plate, the transmission gear assembly is arranged between the upper framework plate and the lower framework plate, and a second raised area is formed between the lower framework plate and the bottom of the second cavity.

[0019] Optionally, the position detection gear has six light transmission detection holes, and the six light transmission detection holes are uniformly distributed on the position detection gear at intervals of 60 degrees.

[0020] Specifically, the photoelectric opposition sensor has an emitting end and a receiving end, one of the emitting end and the receiving end is located above the position monitoring gear, the other is located below the position monitoring gear, and a gap between the emitting end and the receiving end forms the monitoring area.

[0021] In some embodiments of the utility model, the surrounding plate assembly comprises an inner surrounding plate and an outer surrounding plate, and the outer surrounding plate is higher than the inner surrounding plate, the inner cover plate is arranged on the inner surrounding plate, so that the upper end surface of the outer surrounding plate is higher than the inner cover plate, and sealing glue is filled between the outer surrounding plate and the inner cover plate.

[0022] In some embodiments of the utility model, the inner cover plate is provided with a first assembly hole, the surrounding plate assembly is provided with a second assembly hole, and a first fastener is inserted into the first assembly hole and the second assembly hole to fix the inner cover plate to the surrounding plate assembly.

[0023] The second assembly hole is arranged between the inner surrounding plate and the outer surrounding plate.

[0024] In some embodiments of the utility model, the outer box body comprises a base, an upper cover and a side cover, and the side cover faces the power supply assembly.

[0025] The base, the upper cover and the side cover are all convexly provided with lifting lugs, the lifting lugs are provided with matching connecting holes, and a second fastener is inserted into the connecting holes to fixedly connect the base, the upper cover and the side cover.

[0026] More particularly, the base is internally convex with an annular connecting portion having an internal thread, the side cover has an external thread, the internal thread is engaged with the external thread to detachably connect the side cover to the base, and an operating hole is formed in the outer end face of the side cover.

[0027] Optionally, the upper cover has a see-through area.

[0028] The utility model has the advantages that:

[0029] I. The photoelectric reflection sensor replaces the existing flat plate type photoelectric positioning sensor, has higher resolution and better monitoring accuracy.

[0030] II. A position monitoring gear (with a light transmission detection hole) is specially made and perfectly matches the photoelectric reflection sensor, and when the light transmission detection hole passes through the monitoring area, the position information can be collected by the photoelectric reflection sensor, and this monitoring method is accurate.

[0031] III. The structure of the coaming assembly and the cover plate is optimized, when the parts are installed in place, the internal part of the second chamber is separated from the wiring groove by the photoelectric circuit board without affecting the wiring, a completely dark environment is created in the second chamber, the interference of external light source on the photoelectric reflection sensor is eliminated, and the monitoring effect is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic view of the appearance structure of the utility model.

[0033] Figure 2 It is an exploded view of the utility model.

[0034] Figure 3 It is a schematic view of the internal structure of the first chamber of the utility model.

[0035] Figure 4 It is a schematic view of the internal structure of the second chamber of the utility model and a partial structure enlarged view.

[0036] Figure 5 It is a sectional view of the utility model.

[0037] Figure 6 It is a schematic view of the structure of the outer box body.

[0038] Figure 7 It is a schematic view of the cooperation of the photoelectric circuit board, the photoelectric reflection sensor and the position monitoring gear.

[0039] In the figure: 1, the outer box body; 11, the first chamber; 12, the power supply assembly; 13, the reinforced; 14, the first reinforced area; 15, the base; 151, the annular connecting part; 1511, the internal thread; 16, the upper cover; 17, the side cover; 171, the external thread; 172, the operation hole; 18, the lifting lug; 181, the connecting hole; 19, the perspective area; 2, the surrounding plate assembly; 21, the second chamber; 211, the accommodating groove; 212, the wiring groove; 213, the transition channel; 22, the lower framework plate; 23, the upper framework plate; 24, the second reinforced area; 25, the inner layer surrounding plate; 26, the outer layer surrounding plate; 27, the second assembly hole; 3, the motor; 4, the transmission gear assembly; 41, the input gear; 42, the reduction gear; 43, the output gear; 44, the position monitoring gear; 441, the light transmission detection hole; 5, the output valve rod; 6, the inner cover plate; 61, the first assembly hole; 7, the photoelectric circuit board; 71, the photoelectric opposite sensor; 711, the emission end; 712, the receiving end; 713, the monitoring area. DETAILED DESCRIPTION

[0040] The utility model is further described below in combination with the drawings and specific embodiments. It should be noted that the embodiments are only specific descriptions of the utility model, and the purpose is to enable those skilled in the art to better understand the technical scheme of the utility model, and should not be regarded as limiting the utility model.

[0041] In the description of the utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0042] In the description of the utility model, it should be noted that, unless otherwise specified and limited, if the terms "mounting", "connecting", "connecting" appear, they should be understood broadly, for example, they can be fixedly connected, or they can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] Example one

[0044] Reference Figures 1-7The utility model provides a double -chamber electric actuator with opposite type photoelectric positioning function, include: the outer box body 1, inside formation first chamber 11, first chamber 11 be provided with power component 12 in, the surrounding board component 2 is formed by the bottom of outer box body 1 is protruding upwards, the surrounding board component 2 is separated out second chamber 21 in first chamber 11, second chamber 21 be provided with motor 3, transmission gear component 4 and output valve stem 5, inner cover plate 6 is installed in the upper end of surrounding board component 2 to close the upper end of second chamber 21.

[0045] The utility model discloses an improvement lies in, transmission gear component 4 include the input gear 41, a plurality of reduction gear 42 and output gear 43 of driving connection in proper order. Need to emphasize particularly, wherein 1 reduction gear 42 is position monitoring gear 44, a plurality of light transmission detection holes 441 are formed in position monitoring gear 44, the side wall of second chamber 21 is provided with accommodating groove 211, photoelectric circuit board 7 is arranged in accommodating groove 211, photoelectric opposite type sensor 71 is integrated on photoelectric circuit board 7, position monitoring gear 44 at least part extends in the monitoring area 713 of photoelectric opposite type sensor 71 (more specifically, photoelectric opposite type sensor 71 has emitting end 711 and receiving end 712, wherein one of emitting end 711 and receiving end 712 is located above position monitoring gear 44, and the other is located below position monitoring gear 44, and the gap between emitting end 711 and receiving end 712 forms monitoring area 713), the rear end of accommodating groove 211 also has wiring groove 212, and wiring groove 212 is communicated with accommodating groove 211, when inner cover plate 6 is arranged on surrounding board component 2, inner cover plate 6 shields accommodating groove 211, so that the inside of second chamber 21 forms dark environment, and inner cover plate 6 is staggered with wiring groove 212, so that the upper end of wiring groove 212 is exposed.

[0046] The above is the basic structure scheme of the utility model, and the advantages at least are that photoelectric opposite type sensor 71 replaces the existing flat plate type photoelectric positioning sensor, higher resolution and better monitoring accuracy, that position monitoring gear 44 (light transmission detection hole 441 is formed) is specially made and perfectly matches with photoelectric opposite type sensor 71, position information can be collected by photoelectric opposite type sensor 71 when light transmission detection hole 441 passes through monitoring area 713, and the monitoring mode is accurate, that the structure of surrounding board component 2 and cover plate is optimized, when various accessories are installed in place, wiring groove 212 is separated from the inside of second chamber 21 through photoelectric circuit board 7 without affecting wiring, a completely dark environment can be created in second chamber 21, so that the interference of external light source on photoelectric opposite type sensor 71 is eliminated, and the monitoring effect is more accurate.

[0047] With reference to Figures 4-5 , for further supplement of the light shielding function, the accommodating groove 211 is communicated with the wiring groove 212 through a transition channel 213, and the projection area of the transition channel 213 is smaller than the projection area of the photoelectric circuit board 7, when the photoelectric circuit board 7 is assembled into the accommodating groove 211, the photoelectric circuit board 7 completely isolates the transition channel 213 from the second cavity 21; the upper end of the photoelectric circuit board 7 abuts against the inner cover plate 6, and the lower end of the photoelectric circuit board 7 abuts against the bottom of the accommodating groove 211.

[0048] The number and distribution mode of the light transmission detection holes 441 are not specially limited. For example, with reference to Figure 7 , the position detection gear has six light transmission detection holes 441, and the six light transmission detection holes 441 are uniformly distributed on the position detection gear at an interval of 60°. At the same time, attention should also be paid to the transmission ratio between the position detection gear and the output gear 43. Assuming that the position detection gear rotates 360°, the output gear 43 rotates 90°, when the photoelectric opposite transmission sensor 71 detects two adjacent light transmission detection holes 441, it is monitored that the position detection gear rotates 60°, and the output gear 43 rotates 15°.

[0049] Embodiment two

[0050] In some preferred settings of the utility model, some parts are suspended and installed, specifically:

[0051] I. With reference to Figures 5-6 , the bottom of the first cavity 11 is provided with a plurality of high ribs 13, and the power supply assembly 12 is placed on the high ribs 13, so that the first high area 14 is formed between the power supply assembly 12 and the bottom of the first cavity 11.

[0052] II. With reference to Figure 2 , Figure 5 , the second cavity 21 is provided with a lower framework plate 22 and an upper framework plate 23, the motor 3 is arranged at the upper end of the upper framework plate 23, the transmission gear assembly 4 is arranged between the upper framework plate 23 and the lower framework plate 22, and the second high area 24 is formed between the lower framework plate 22 and the bottom of the second cavity 21.

[0053] Through the setting of the first high area 14 and the second high area 24, the power supply assembly 12, the transmission gear assembly 4 and the motor 3 are suspended relative to the bottom of the first cavity 11, thereby reducing vibration interference, avoiding waterlogging and dampness, avoiding the influence of heat transfer and many other advantages.

[0054] Embodiment three

[0055] On the basis of any one of the foregoing embodiments, the present embodiment provides a preferred structure scheme for the enclosure assembly 2, the outer box body 1 and the like accessories, which is as follows:

[0056] I. The enclosure assembly 2: refer to Figures 4-6 , comprising an inner enclosure 25 and an outer enclosure 26, and the outer enclosure 26 is higher than the inner enclosure 25, the inner cover plate 6 is arranged on the inner enclosure 25, so that the upper end surface of the outer enclosure 26 is higher than the inner cover plate 6, and sealing glue is filled between the outer enclosure 26 and the inner cover plate 6. The enclosure assembly 2 adopts the inner-outer double-layer structure composed of the inner enclosure 25 and the outer enclosure 26 to play a double-enclosure protection role; and after assembly, the sealing glue can effectively seal the gaps between the parts, so that a better sealed environment is formed inside.

[0057] Optionally, the inner cover plate 6 is provided with a first assembly hole 61, and the enclosure assembly 2 is provided with a second assembly hole 27, a first fastener (screw, etc., not shown in the figure) is inserted into the first assembly hole 61 and the second assembly hole 27 to fix the inner cover plate 6 to the enclosure assembly 2; the second assembly hole 27 is arranged between the inner enclosure 25 and the outer enclosure 26. The cooperation structure (the first assembly hole 61 and the second assembly hole 27) of the inner cover plate 6 and the enclosure assembly 2 is arranged at the gap between the inner enclosure 25 and the outer enclosure 26, without occupying the space of the second cavity 21, and ensuring that the second cavity 21 has good sealing performance.

[0058] II. The outer box body 1: refer to Figures 1-2 , comprising a base 15, an upper cover 16 and a side cover 17, the side cover 17 is opposite to the power supply assembly 12; the base 15, the upper cover 16 and the side cover 17 are all provided with a lifting lug 18 (a lifting ring, etc., not shown in the figure), the lifting lug 18 is provided with a connecting hole 181 matched therewith, and a second fastener is inserted into the connecting hole 181 to fixedly connect the base 15, the upper cover 16 and the side cover 17. When the power supply assembly 12 is replaced, the side cover 17 can be opened alone, without separating the upper cover 16 from the base 15, which is more simple and efficient. The lifting lug 18 and the connecting hole 181 on the base 15, the upper cover 16 and the side cover 17 adopt a unified structure design and reasonable position partitioning, which improves the structure utilization rate and makes disassembly more convenient under the premise of ensuring sufficient connection strength.

[0059] More specifically, the base 15 is internally convexly provided with an annular connecting portion 151 having an internal thread 1511, the side cover 17 is externally provided with an external thread 171, the internal thread 1511 is engaged with the external thread 171 to detachably connect the side cover 17 to the base 15, and the outer end face of the side cover 17 is provided with an operation hole 172. The shape of the operation hole 172 can be matched with the shape of a special tool to prevent malicious opening and damage, and only the special tool can separate the side cover 17 from the base 15, thereby increasing the safety.

[0060] III. Refer to Figures 1-2 The upper cover 16 is provided with a perspective area 19 to form an observation area, so that the user can directly observe the internal operation through the perspective area 19.

[0061] It should be noted that other technical solutions of the present application are all prior art, and therefore will not be described in detail.

[0062] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A dual-chamber electric actuator with through-beam photoelectric positioning function, comprising: The outer casing (1) has a first chamber (11) inside, and a power supply assembly (12) is provided in the first chamber (11); The enclosure assembly (2) is formed by the bottom of the outer box (1) protruding upward. The enclosure assembly (2) divides the first chamber (11) into a second chamber (21). The second chamber (21) is provided with a motor (3), a transmission gear assembly (4) and an output valve stem (5). An inner cover plate (6) is installed on the upper end of the enclosure assembly (2) to close the upper end of the second chamber (21); Its features are: The transmission gear assembly (4) includes an input gear (41), several reduction gears (42), and an output gear (43) that are connected in sequence. One of the reduction gears (42) is a position monitoring gear (44), and the position monitoring gear (44) is provided with several light-transmitting detection holes (441). The second chamber (21) has a receiving groove (211) on its side wall. The receiving groove (211) is provided with a photoelectric circuit board (7). The photoelectric circuit board (7) is integrated with a photoelectric through-beam sensor (71). The position monitoring gear (44) extends at least partially into the monitoring area (713) of the photoelectric through-beam sensor (71). The rear end of the receiving groove (211) also has a wiring groove (212), which communicates with the receiving groove (211); when the inner cover plate (6) is placed on the enclosure assembly (2), the inner cover plate (6) covers the receiving groove (211) so that the interior of the second chamber (21) forms a dark environment; and the inner cover plate (6) is offset from the wiring groove (212) so that the upper end of the wiring groove (212) is exposed.

2. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 1, characterized in that: The receiving groove (211) is connected to the wiring groove (212) through a transition channel (213), and the projected area of ​​the transition channel (213) is smaller than the projected area of ​​the optoelectronic circuit board (7). When the optoelectronic circuit board (7) is assembled into the receiving groove (211), the optoelectronic circuit board (7) completely isolates the transition channel (213) from the second chamber (21). The upper end of the optoelectronic circuit board (7) abuts against the inner cover plate (6), and the lower end of the optoelectronic circuit board (7) abuts against the bottom of the receiving groove (211).

3. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 1, characterized in that: The bottom of the first chamber (11) is provided with a plurality of reinforcing ribs (13), and the power supply assembly (12) is placed on the reinforcing ribs (13) so that a first reinforcing area (14) is formed between the power supply assembly (12) and the bottom of the first chamber (11). The second chamber (21) is provided with a lower frame plate (22) and an upper frame plate (23). The motor (3) is located at the upper end of the upper frame plate (23). The transmission gear assembly (4) is located between the upper frame plate (23) and the lower frame plate (22). A second raised area (24) is formed between the lower frame plate (22) and the bottom of the second chamber (21).

4. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 1, characterized in that: The position detection gear has 6 light-transmitting detection holes (441), and the 6 light-transmitting detection holes (441) are evenly distributed on the position detection gear at 60° intervals.

5. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 1, characterized in that: The photoelectric through-beam sensor (71) has an output end (711) and a receiving end (712), wherein one of the output end (711) and the receiving end (712) is located above the position monitoring gear (44) and the other is located below the position monitoring gear (44), and the gap between the output end (711) and the receiving end (712) forms the monitoring area (713).

6. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 1, characterized in that: The enclosure assembly (2) includes an inner enclosure (25) and an outer enclosure (26), with the outer enclosure (26) being higher than the inner enclosure (25). The inner cover plate (6) covers the inner enclosure (25) so that the upper surface of the outer enclosure (26) is higher than the inner cover plate (6), and sealant is injected between the outer enclosure (26) and the inner cover plate (6).

7. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 6, characterized in that: The inner cover plate (6) is provided with a first mounting hole (61), and the surrounding plate assembly (2) is provided with a second mounting hole (27). The first fastener is inserted into the first mounting hole (61) and the second mounting hole (27) to fix the inner cover plate (6) to the surrounding plate assembly (2). The second mounting hole (27) is disposed between the inner shroud (25) and the outer shroud (26).

8. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 1, characterized in that: The outer casing (1) includes a base (15), a top cover (16) and a side cover (17), with the side cover (17) facing the power supply assembly (12). The base (15), the top cover (16) and the side cover (17) are all provided with lifting lugs (18), and the lifting lugs (18) have matching connecting holes (181). The second fastener is inserted into the connecting hole (181) to fix the base (15), the top cover (16) and the side cover (17) together.

9. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 8, characterized in that: The base (15) has an annular connecting part (151) protruding inside, the annular connecting part (151) has an internal thread (1511), the side cover (17) has an external thread (171), the internal thread (1511) and the external thread (171) are engaged to detachably connect the side cover (17) to the base (15), and the outer end face of the side cover (17) is provided with an operating hole (172).

10. The dual-chamber electric actuator with through-beam photoelectric positioning function according to claim 8, characterized in that: The top cover (16) has a transparent area (19).

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