Rotation control device of electric actuating mechanism

Abstract

The utility model discloses a rotation control device of an electric actuating mechanism, which is arranged between a driving mechanism and a load mechanism, the driving mechanism is used for driving the load mechanism to rotate, and the rotation control device comprises a shell with a containing cavity and a driving rod. The two ends of the driving rod penetrate through the containing cavity to be connected with the driving mechanism and the load mechanism in a one-to-one correspondence mode, a trigger piece is arranged on the driving rod, a first induction piece and a second induction piece are arranged in the containing cavity, and the load mechanism has an open state and a closed state. When the load mechanism is in a closed state, the trigger part triggers the second induction part. The opening state, the closing state and the middle state of the load mechanism can be accurately judged, so that the motion operation of the driving mechanism for driving the load mechanism is conveniently determined. And the fault conditions of the driving mechanism and the rotation control device can be judged, so that workers can be conveniently notified to repair in time.

Description

Technical Field

[0001] The utility model belongs to the field of electric actuator control, and in particular relates to a rotation control device of an electric actuator. Background Art

[0002] Intelligent ventilation systems play a crucial role in the intelligentization of grain storage. This system encompasses the switching operation of load mechanisms, such as ventilation windows, which typically open and close by rotating relative to each other. Intelligent control replaces manual operation of load mechanism switching.

[0003] Some use a motor-driven worm-gear structure for control. The worm gear in the worm gear is equipped with a dedicated drive shaft, one end of which is connected to the load end to achieve mechanical operation. The other end of the drive shaft is equipped with a detection device. This system can only determine whether the load mechanism is in one of the open or closed states, but cannot accurately determine the other state or the intermediate state between the open and closed states. Furthermore, it cannot provide effective feedback for device anomalies, thus failing to effectively control the drive mechanism. The load mechanism may suffer from structural damage caused by insufficient or excessive execution.

[0004] Furthermore, the primary detection device currently used is a circular ring mounted on the drive shaft. The ring's outer extension has a different shape, and as the drive shaft rotates, it contacts a travel switch, generating a feedback signal. However, during installation, the load-side rotating rod is typically long, making vertical installation difficult. Consequently, the rotating shaft pivots on the worm gear. When the load-side is subjected to force, the end of the drive shaft where the detection device is mounted deviates, causing the device to malfunction. Utility Model Content

[0005] The utility model provides a rotation control device for an electric actuator to solve the problem that one end of the transmission shaft is connected to the load end and the other end is equipped with a detection device, which results in that only one of the open and closed states of the load mechanism can be judged, while the other state, the intermediate state and the fault condition are difficult to feedback; and the end of the transmission shaft where the detection device is installed is prone to deviation, which may cause the device to malfunction.

[0006] The technical solution adopted by this utility model is:

[0007] A rotation control device for an electric actuator, wherein the rotation control device is arranged between a drive mechanism and a load mechanism, the drive mechanism is used to drive the load mechanism to rotate, the rotation control device includes a shell having an accommodating cavity and a drive rod, the two ends of the drive rod pass through the accommodating cavity and are respectively connected to the drive mechanism and the load mechanism in a one-to-one correspondence, a trigger member is provided on the drive rod, a first sensing member and a second sensing member are provided in the accommodating cavity, the load mechanism has an open state and a closed state, when the load mechanism is in the open state, the trigger member triggers the first sensing member, and when the load mechanism is in the closed state, the trigger member triggers the second sensing member.

[0008] The rotation control device of the electric actuator of the present invention also has the following additional technical features:

[0009] The triggering member is sleeved on the driving rod, and a thread groove is provided on the surface of the driving rod. The rotation of the driving rod can drive the triggering member to move along the axis of the driving rod.

[0010] A matching rod parallel to the driving rod is further provided in the accommodating cavity, and the matching rod matches with the trigger member to limit the rotation of the trigger member around the axis of the driving rod.

[0011] The first induction component and the second induction component are respectively located at two ends of the driving rod, and the trigger component is located between the first induction component and the second induction component.

[0012] The first sensing member and the second sensing member are tilted relative to the axis of the driving rod to have a sensing slope facing the trigger member. The trigger member is provided with contact slopes at both ends along the axis of the driving rod, and the multiple contact slopes correspond one to one to the sensing slopes.

[0013] Each of the plurality of sensing slopes is provided with a pressure sensor, and an elastic connection structure is provided between the pressure sensor and the sensing slope;

[0014] Alternatively, pressure sensors are provided on the contact inclined surfaces at both ends of the trigger member, and an elastic connection structure is provided between the pressure sensor and the contact inclined surfaces.

[0015] The driving rod is also provided with a first rest piece and a second rest piece. The trigger piece includes a main body and a rest portion. When the loading mechanism is in the open state, the rest portion cooperates with the first rest piece. When the loading mechanism is in the closed state, the rest portion cooperates with the second rest piece to limit the movement of the trigger piece.

[0016] The first resting piece and the second resting piece are fixed to the housing, and the first resting piece and the second resting piece surround the driving rod.

[0017] The first sensing member, the second sensing member and the trigger member are located between the first rest member and the second rest member. There is an avoidance gap between the first sensing member, the second sensing member and the driving rod. The cross-sectional size of the rest portion is smaller than that of the main body. The rest portion can pass through the avoidance gap and cooperate with the first rest member or the second rest member.

[0018] The rotation control device is provided with a driving load monitoring module capable of monitoring the driving load pressure of the driving mechanism to determine the switching operation of the driving mechanism according to the driving load pressure.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0020] 1. In the present invention, the driving mechanism is used to drive the load mechanism to rotate, so as to switch the load mechanism between an open state and a closed state. The rotation control device is arranged between the driving mechanism and the load mechanism, and the rotation control device is arranged at the position of the original connecting rod between the driving mechanism and the load mechanism, so as to facilitate the connection and installation of the rotation control device and avoid structural interference with the rotation control device. The two ends of the driving rod pass through the accommodating cavity and are respectively connected to the driving mechanism and the load mechanism in a one-to-one correspondence. The two ends of the driving rod pass through the shell and are exposed outside the shell, so as to facilitate the connection and installation operation of the rotation control device with the driving mechanism and the load mechanism without opening the shell for installation.

[0021] In addition, the driving rod, the trigger member, the first sensing member and the second sensing member are all arranged in the shell. The shell can reduce the contamination of dust and the like on the trigger member, the first sensing member and the second sensing member, reduce the occurrence of malfunction of the trigger member, the first sensing member and the second sensing member, and improve the service life of the rotation control device.

[0022] Furthermore, a first sensor and a second sensor are disposed within the accommodating chamber. The load mechanism has an open state and a closed state. When the load mechanism is in the open state, the trigger triggers the first sensor, and when the load mechanism is in the closed state, the trigger triggers the second sensor. The open and closed states of the load mechanism are determined by the triggering of the first and second sensors. When neither the first sensor nor the second sensor is triggered, it can be determined that the load mechanism has not been fully activated, and the drive mechanism needs to continue to rotate the load mechanism to open or close the load mechanism. Furthermore, when neither the first sensor nor the second sensor is triggered for an extended period of time or is triggered simultaneously, it can be determined that the drive mechanism or the rotation control device is faulty, alerting personnel to perform maintenance. When the first sensor is triggered, the load mechanism is determined to be in the open state, preventing the drive mechanism from continuing to rotate the load mechanism toward the open state, thereby avoiding structural interference and damage. When the second sensor is triggered, the load mechanism is determined to be in the closed state, preventing the drive mechanism from continuing to rotate the load mechanism toward the closed state, thereby avoiding structural interference and damage.

[0023] The first and second sensing elements are configured to accurately determine the open and closed states, as well as intermediate states between the open and closed states, of the load mechanism, thereby facilitating the determination of the motion of the load mechanism by the drive mechanism. Furthermore, the first and second sensing elements can be configured to detect any malfunctions of the drive mechanism and the rotation control device, thereby facilitating notification of repairs.

[0024] 2. As a preferred embodiment of the present invention, the trigger member is sleeved on the drive rod, and a thread groove is provided on the surface of the drive rod, and the rotation of the drive rod can drive the trigger member to move along the axis of the drive rod. When the drive mechanism drives the load mechanism to rotate to switch between the open state and the closed state, the drive rod rotates. A thread groove is provided on the surface of the drive rod, and the rotation of the drive rod can drive the trigger member to move along the axis of the drive rod to switch between triggering the first sensing member and the second sensing member. The rotation of the drive rod is converted into the sliding of the trigger member, and the movement is carried out with the help of the rod length space of the drive rod.

[0025] However, when the trigger member rotates around the drive rod, the trigger member occupies the radially outward space of the drive rod, resulting in an increase in the volume of the rotation control device and inconvenience in installation. Moreover, when the trigger member rotates and abuts against the first sensing member and the second sensing member, a large shear force is generated between the trigger member and the drive rod, which can easily cause the trigger member and the drive rod to separate and be damaged.

[0026] Therefore, in this embodiment, the trigger member moves along the axis of the drive rod, which not only reduces the size of the rotation control device and facilitates structural installation, but also reduces structural interference that may occur when the trigger member moves, thereby avoiding malfunction of the rotation control device caused by the trigger member being separated from the drive rod.

[0027] 3. As a preferred embodiment of the present invention, each of the plurality of sensing slopes is provided with a pressure sensor, and an elastic connection structure is formed between the pressure sensor and the sensing slope. The pressure sensor is mounted on the sensing slope, and the sensing slope provides a mounting surface for the pressure sensor, thereby facilitating the connection structure between the pressure sensor and the sensing slope and also facilitating the installation of the pressure sensor. When the contact slope compresses the pressure sensor, the pressure sensor is triggered, indicating the status of the load mechanism.

[0028] In addition, an elastic connection structure is provided between the pressure sensor and the sensing ramp. When a structural error exists between the trigger member and the first or second sensing member, or when the rotation control device fails and the drive mechanism fails to shut down in time and continues to drive the load mechanism to rotate, the contact ramp continues to squeeze the pressure sensor, causing the pressure sensor to elastically displace toward the sensing ramp, thereby reducing the squeezing force exerted by the contact ramp on the pressure sensor and minimizing damage to the pressure sensor due to excessive squeezing force. Furthermore, when the contact ramp moves away from the pressure sensor and the squeezing force on the pressure sensor disappears, the elastic connection structure can elastically recover, pushing the pressure sensor back to its original position without the need for manual resetting or other operations.

[0029] 4. As a preferred embodiment of the present invention, the first and second resting members are fixed to the housing and surround the drive rod. These first and second resting members surround the drive rod, providing radial constraints on the drive rod and reducing vibration during rotation, thereby reducing abnormal noise that may be generated during operation of the rotation control device and improving the stability of the drive mechanism in driving the load mechanism.

[0030] In addition, the first rest member and the second rest member provide annular restraint for the drive rod. When the drive rod is radially deformed, the first rest member and the second rest member can generate annular restraint for the drive rod, that is, the drive rod is subjected to radial pressure from the first rest member and the second rest member, thereby reducing the occurrence of radial deformation and thereby improving the bearing capacity of the drive rod.

[0031] 5. As a preferred embodiment of the present invention, the rotation control device is provided with a drive load monitoring module, which can monitor the drive load pressure of the drive mechanism to determine the switching operation of the drive mechanism according to the drive load pressure. Under abnormal circumstances, when the first sensing member or the second sensing member fails and the load mechanism has been executed, the drive mechanism continues to drive the load mechanism, and the load mechanism cannot continue to rotate due to structural interference, thereby increasing the drive load pressure of the drive mechanism. The drive load monitoring module can monitor the drive load pressure of the drive mechanism. When the drive load pressure exceeds the limit, it prompts to shut down the drive mechanism to avoid damage to the load mechanism due to structural collision. It can also protect the drive mechanism from problems such as circuit fusing due to the drive load pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 This is a structural schematic diagram of the rotation control device according to an embodiment of the present invention, wherein the housing is in an open state;

[0034] Figure 2 for Figure 1 Magnified view of area A in the middle;

[0035] Figure 3 This is a side view of the rotation control device according to one embodiment of the present invention, wherein the housing is in an open state;

[0036] Figure 4 It is a side view of the rotation control device according to one embodiment of the present invention, wherein the rotation control device is not provided with a housing;

[0037] Figure 5 This is a schematic diagram of the structural connection between the rotation control device, the driving mechanism and the load mechanism in one embodiment of the present invention.

[0038] in:

[0039] 1 driving mechanism;

[0040] 2. Loading mechanism;

[0041] 3 Rotation control device; 31 Housing; 311 Accommodating chamber; 32 Driving rod; 33 Triggering member; 331 Contact inclined surface; 332 Main body; 333 Resting portion; 341 First sensing member; 342 Second sensing member; 343 Sensing inclined surface; 345 Pressure sensor; 346 Elastic connection structure; 347 Avoidance gap; 35 Matching rod; 361 First resting member; 362 Second resting member; 37 Driving load monitoring module. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0044] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "embodiment", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0047] like Figure 1 、 Figure 3 and Figure 5 As shown, a rotation control device of an electric actuator is provided. The rotation control device 3 is arranged between a driving mechanism 1 and a load mechanism 2. The driving mechanism 1 is used to drive the load mechanism 2 to rotate. The rotation control device 3 includes a shell 31 having a accommodating cavity 311 and a driving rod 32. Both ends of the driving rod 32 pass through the accommodating cavity 311 and are respectively connected to the driving mechanism 1 and the load mechanism 2 in a one-to-one correspondence. A trigger member 33 is provided on the driving rod 32. A first sensing member 341 and a second sensing member 342 are provided in the accommodating cavity 311. The load mechanism 2 has an open state and a closed state. When the load mechanism 2 is in the open state, the trigger member 33 triggers the first sensing member 341. When the load mechanism 2 is in the closed state, the trigger member 33 triggers the second sensing member 342.

[0048] It is understood that the drive mechanism 1 transmits power to the load mechanism 2 via the drive rod 32 to drive the load mechanism 2 to rotate. The load mechanism 2 can be a ventilation window, which is opened and closed by rotating the ventilation window. The rotation control device 3 automatically monitors the opening and closing states of the ventilation window, thereby controlling the drive mechanism 1 and facilitating automatic ventilation of the room.

[0049] It should be noted that in the present invention, a trigger member 33 is provided on the driving rod 32, and a first sensing member 341 and a second sensing member 342 are provided in the accommodating cavity 311. When the loading mechanism 2 is in the open state, the trigger member 33 triggers the first sensing member 341, and when the loading mechanism 2 is in the closed state, the trigger member 33 triggers the second sensing member 342. Of course, a sensing member may also be provided on the driving rod 32, and a first trigger member and a second trigger member may be provided in the accommodating cavity 311. When the loading mechanism 2 is in the open state, the first trigger member triggers the sensing member, and when the loading mechanism 2 is in the closed state, the second trigger member triggers the sensing member. The present invention is not limited to this.

[0050] The rotation control device 3 is disposed between the drive mechanism 1 and the load mechanism 2, located at the location of the original connecting rod between the drive mechanism 1 and the load mechanism 2. This facilitates the connection and installation of the rotation control device 3 and avoids structural interference with the rotation control device 3. The ends of the drive rod 32 pass through the accommodating cavity 311, respectively connecting to the drive mechanism 1 and the load mechanism 2 in a one-to-one manner. The ends of the drive rod 32 pass through the housing 31, thereby being exposed outside the housing 31. This facilitates the connection and installation of the rotation control device 3 with the drive mechanism 1 and the load mechanism 2, without requiring the housing 31 to be opened for installation.

[0051] In addition, the driving rod 32, the trigger member 33, the first sensing member 341 and the second sensing member 342 are all arranged in the shell 31. The shell 31 can reduce the contamination of dust and the like on the trigger member 33, the first sensing member 341 and the second sensing member 342, reduce the occurrence of malfunction problems of the trigger member 33, the first sensing member 341 and the second sensing member 342, and improve the service life of the rotation control device 3.

[0052] Again, a first sensor 341 and a second sensor 342 are provided within the accommodating chamber 311. The load mechanism 2 has an open state and a closed state. When the load mechanism 2 is in the open state, the trigger 33 triggers the first sensor 341. When the load mechanism 2 is in the closed state, the trigger 33 triggers the second sensor 342. The open and closed states of the load mechanism 2 are determined by the triggering of the first sensor 341 and the second sensor 342. When neither the first sensor 341 nor the second sensor 342 is triggered, it can be determined that the load mechanism 2 has not been fully activated, and the drive mechanism 1 needs to continue to drive the load mechanism 2 to rotate in order to open or close the load mechanism 2. In addition, when neither the first sensor 341 nor the second sensor 342 is triggered for a long time or is triggered simultaneously, it can be determined that there is a fault in the drive mechanism 1 or the rotation control device 3, so as to alert the staff to perform maintenance. When the first sensing element 341 is triggered, the load mechanism 2 is determined to be in the open state, preventing the drive mechanism 1 from driving the load mechanism 2 to continue rotating toward the open state, thereby avoiding structural interference and damage. When the second sensing element 342 is triggered, the load mechanism 2 is determined to be in the closed state, preventing the drive mechanism 1 from driving the load mechanism 2 to continue rotating toward the closed state, thereby avoiding structural interference and damage.

[0053] The first sensing element 341 and the second sensing element 342 are configured to accurately determine the open state, closed state, and intermediate states between the open and closed states of the load mechanism 2, thereby facilitating the determination of the motion operation of the drive mechanism 1 driving the load mechanism 2. Furthermore, the first sensing element 341 and the second sensing element 342 can be configured to accurately determine the open state, closed state, and intermediate states between the open and closed states of the load mechanism 2. Furthermore, the first sensing element 341 and the second sensing element 342 can be configured to accurately determine the motion operation of the drive mechanism 1 driving the load mechanism 2. Furthermore, the first sensing element 341 and the second sensing element 342 can be configured to accurately determine the motion operation of the drive mechanism 1 and the rotation control device 3, thereby facilitating the notification of human intervention for timely repair.

[0054] It should be noted that the present invention does not limit the types of the triggering member 33, the first sensing member 341, and the second sensing member 342. The first sensing member 341 and the second sensing member 342 may be pressure sensing members, and the triggering member 33 may squeeze the pressure sensing member to achieve triggering; or the triggering member 33 may be a magnetic member, and the first sensing member 341 and the second sensing member 342 may be magnetic sensing members, and the magnetic sensing members may sense the magnetic field of the magnetic member to achieve triggering. The present invention does not impose any restrictions on this, as long as the triggering member 33 can cooperate with the first sensing member 341 and the second sensing member 342 to achieve triggering.

[0055] As a preferred embodiment of the present invention, Figures 1 to 4As shown, the trigger member 33 is sleeved on the drive rod 32. The surface of the drive rod 32 is provided with a threaded groove. The rotation of the drive rod 32 can drive the trigger member 33 to move along the axis of the drive rod 32. When the drive mechanism 1 drives the load mechanism 2 to rotate to switch between the open state and the closed state, the drive rod 32 rotates. The surface of the drive rod 32 is provided with a threaded groove. The rotation of the drive rod 32 can drive the trigger member 33 to move along the axis of the drive rod 32 to switch between triggering the first sensing member 341 and the second sensing member 342. The rotation of the drive rod 32 is converted into the sliding of the trigger member 33, which moves by taking advantage of the space in the rod length of the drive rod 32.

[0056] When the trigger member 33 rotates around the drive rod 32, the trigger member 33 occupies the radially outward space of the drive rod 32, resulting in an increase in the volume of the rotation control device 3 and inconvenience in installation. Moreover, when the trigger member 33 rotates and abuts against the first sensing member 341 and the second sensing member 342, a large shear force is generated between the trigger member 33 and the drive rod 32, which easily causes the trigger member 33 to separate and be damaged from the drive rod 32.

[0057] Therefore, in this embodiment, the trigger member 33 moves along the axis of the drive rod 32, which not only reduces the volume of the rotation control device 3 and facilitates structural installation, but also reduces structural interference that may occur when the trigger member 33 moves, thereby avoiding malfunction of the rotation control device 3 caused by the trigger member 33 being separated from the drive rod 32.

[0058] It should be noted that in this embodiment, the trigger member 33 is sleeved on the drive rod 32, and the drive rod 32 applies a uniform force to the trigger member 33 along its circumference, thereby promoting a more stable movement of the trigger member 33. However, the trigger member 33 may be located on one side of the drive rod 32, surrounding a portion of the drive rod 32, and engaging with the drive rod 32 to achieve the drive of the trigger member 33 by the drive rod 32. This is not a limitation of the present invention.

[0059] Preferably, Figure 1 、 Figure 2 and Figure 4As shown, the accommodating cavity 311 is further provided with a mating rod 35 parallel to the drive rod 32. The mating rod 35 engages with the trigger member 33 to limit the rotation of the trigger member 33 about the axis of the drive rod 32. The mating rod 35 is parallel to the drive rod 32, further guiding the movement of the trigger member 33 along the axis of the drive rod 32 and improving the smoothness of the movement of the trigger member 33. The mating rod 35 can limit the rotation of the trigger member 33 about the axis of the drive rod 32, converting the rotation of the drive rod 32 into sliding of the trigger member 33, reducing circumferential vibration of the trigger member 33 and improving the stability of the driving of the trigger member 33.

[0060] Specifically, the engagement rod 35 is fixed to the housing 31 and does not move relative to the housing 31. Furthermore, the engagement rod 35 has a smooth surface without grooves or protrusions, further reducing the resistance of the trigger member 33 when sliding relative to the engagement rod 35.

[0061] As a preferred embodiment of the present invention, Figure 1 、 Figure 3 and Figure 4 As shown, the first sensing member 341 and the second sensing member 342 are respectively located at the two ends of the driving rod 32, and the trigger member 33 is located between the first sensing member 341 and the second sensing member 342. The first sensing member 341 and the second sensing member 342 are respectively located at the two ends of the driving rod 32, and the trigger member 33 moves between the first sensing member 341 and the second sensing member 342. By setting the distance between the first sensing member 341 and the second sensing member 342, the trigger member 33 can trigger the first sensing member 341 when the loading mechanism 2 is in the open state, and trigger the second sensing member 342 when the loading mechanism 2 is in the closed state.

[0062] The first sensing member 341 and the second sensing member 342 are respectively located at the two ends of the driving rod 32, which increases the distance between the first sensing member 341 and the second sensing member 342, thereby preventing the trigger member 33 from triggering the first sensing member 341 and the second sensing member 342 at the same time. This facilitates the structural design of the rotation control device 3 and can also reduce the failure rate of the rotation control device 3.

[0063] As an example of this embodiment, Figures 1 to 3As shown, the first sensing member 341 and the second sensing member 342 are arranged at an angle relative to the axis of the driving rod 32 to have a sensing slope 343 facing the trigger member 33. The trigger member 33 is provided with a contact slope 331 at both ends along the axis of the driving rod 32, and the multiple contact slopes 331 correspond to each other and face the sensing slopes 343. When the trigger member 33 presses the first sensing member 341 or the second sensing member 342, the contact slopes 331 cooperate with the sensing slopes 343 to reduce the squeezing force between the trigger member 33 and the first sensing member 341 or the second sensing member 342, thereby reducing the possibility of structural extrusion damage.

[0064] In addition, the contact inclined surface 331 and the sensing inclined surface 343 are arranged at an angle, and the trigger member 33 moves along the axis of the driving rod 32. The trigger member 33 generates an extrusion force along the axis direction of the driving rod 32 on the first sensing member 341 or the second sensing member 342. The force is decomposed by the contact inclined surface 331 and the sensing inclined surface 343, and part of it is converted into friction between the contact inclined surface 331 and the sensing inclined surface 343, thereby reducing the extrusion force perpendicular to the sensing inclined surface 343, and further reducing the possibility of structural extrusion damage.

[0065] Preferably, Figures 1 to 3 As shown, each of the plurality of sensing slopes 343 is provided with a pressure sensor 345, with an elastic connection structure 346 between the pressure sensor 345 and the sensing slope 343. The pressure sensor 345 is provided on the sensing slope 343, and the sensing slope 343 provides a mounting surface for the pressure sensor 345, thereby facilitating the connection structure between the pressure sensor 345 and the sensing slope 343 and also facilitating the installation of the pressure sensor 345. When the contact slope 331 presses against the pressure sensor 345, the pressure sensor 345 is triggered, indicating the status of the load mechanism 2.

[0066] In addition, an elastic connection structure 346 is provided between the pressure sensor 345 and the sensing ramp 343. When a structural error occurs between the trigger member 33 and the first sensing member 341 or the second sensing member 342, or when the rotation control device 3 malfunctions, causing the drive mechanism 1 to fail to shut down in time and continue to drive the load mechanism 2 to rotate, the contact ramp 331 continues to squeeze the pressure sensor 345, causing the pressure sensor 345 to elastically displace toward the sensing ramp 343, thereby reducing the squeezing force of the contact ramp 331 on the pressure sensor 345 and minimizing damage to the pressure sensor 345 due to excessive squeezing force. Furthermore, when the contact ramp 331 moves away from the pressure sensor 345 and the squeezing force on the pressure sensor 345 disappears, the elastic connection structure 346 can elastically recover, pushing the pressure sensor 345 back to its original position without the need for manual resetting or other operations.

[0067] Furthermore, the sensing slope 343 is provided with an escape groove or escape space for accommodating the pressure sensor 345 and the elastic connection structure 346. When the contact slope 331 compresses the pressure sensor 345, the pressure sensor 345 can move toward the sensing slope 343 and enter the escape groove or escape space. The contact slope 331 abuts the sensing slope 343, thereby preventing the contact slope 331 and the sensing slope 343 from compressing the pressure sensor 345 and causing pressure damage to the pressure sensor 345.

[0068] Preferably, pressure sensors 345 are provided on the contact slopes 331 at both ends of the trigger member 33, with elastic connection structures 346 between the pressure sensors 345 and the contact slopes 331. The pressure sensors 345 can also be provided on the contact slopes 331, with triggering occurring when the sensing slopes 343 compress the pressure sensors 345. The connection structure between the pressure sensors 345 and the contact slopes 331 and the effects achieved are similar to those of the above-described embodiment and are not described in detail here.

[0069] As a preferred embodiment of the present invention, Figure 1 、 Figure 3 and Figure 4As shown, the driving rod 32 is further provided with a first rest member 361 and a second rest member 362. The trigger member 33 includes a body 332 and a rest portion 333. When the loading mechanism 2 is in the open state, the rest portion 333 cooperates with the first rest member 361. When the loading mechanism 2 is in the closed state, the rest portion 333 cooperates with the second rest member 362 to limit the movement of the trigger member 33. The rest portion 333 cooperates with the first rest member 361 or the second rest member 362 to limit the continued movement of the trigger member 33, thereby preventing the trigger member 33 from further squeezing the first sensing member 341 or the second sensing member 342, thereby reducing the possibility of the first sensing member 341 or the second sensing member 342 being squeezed and damaged.

[0070] As an example of this embodiment, Figure 1 and Figure 3 As shown, the first and second rests 361, 362 are fixed to the housing 31 and surround the drive rod 32. The first and second rests 361, 362 surround the drive rod 32, providing radial constraints on the drive rod 32 and reducing vibrations during rotation. This reduces abnormal noises that may be generated during operation of the rotation control device 3 and improves the stability of the drive mechanism 1 in driving the load mechanism 2. The first and second rests 361, 362 secure the drive rod 32 at at least two points, defining a straight line between the two points and further reducing vibrations during rotation of the drive rod 32.

[0071] In addition, the first rest member 361 and the second rest member 362 provide annular restraint for the drive rod 32. When the drive rod 32 is radially deformed, the first rest member 361 and the second rest member 362 can generate annular restraint for the drive rod 32, that is, the drive rod 32 is subjected to radial pressure from the first rest member 361 and the second rest member 362, thereby reducing the occurrence of radial deformation and thereby improving the bearing capacity of the drive rod 32.

[0072] As another example under this embodiment, Figure 1 and Figure 3As shown, the first sensing member 341, the second sensing member 342 and the trigger member 33 are located between the first rest member 361 and the second rest member 362. There is an avoidance gap 347 between the first sensing member 341, the second sensing member 342 and the driving rod 32. The cross-sectional size of the rest portion 333 is smaller than that of the main body 332. The rest portion 333 can pass through the avoidance gap 347 and cooperate with the first rest member 361 or the second rest member 362. The first sensing member 341, the second sensing member 342 and the trigger member 33 are located between the first rest member 361 and the second rest member 362, thereby increasing the distance between the first rest member 361 and the second rest member 362. When the driving rod 32 vibrates, the distance between the first rest member 361 and the second rest member 362 and the vibration center of the driving rod 32 is increased, thereby reducing the force of the driving rod 32 on the first rest member 361 and the second rest member 362, reducing the possibility of damage to the driving rod 32 due to structural collision with the first rest member 361 and the second rest member 362, and also increasing the stability of the first rest member 361 and the second rest member 362 in restricting the position of the driving rod 32.

[0073] A clearance gap 347 is defined between the first and second sensing members 341, 342, and the drive rod 32. The rest portion 333 has a smaller cross-sectional dimension than the main body 332, allowing it to pass through the clearance gap 347 and engage with the first or second rest portion 361, 362. The clearance gap 347 provides clearance for the rest portion 333, facilitating its passage through the first or second sensing member 341, 342 and contact with the first or second rest portion 361, 362. The rest portion 333 has a smaller cross-sectional dimension than the main body 332, preventing the main body 332 from passing through the clearance gap 347. This prevents the trigger member 33 from being dislodged between the first and second sensing members 341, 342, requiring reloading. At the same time, the main body 332 does not pass through the avoidance gap 347 and can be triggered by the first sensing element 341 or the second sensing element 342 , thereby determining the state and controlling the driving mechanism 1 .

[0074] As a preferred embodiment of the present invention, Figure 1 and Figure 3As shown, the rotation control device 3 is provided with a drive load monitoring module 37, which can monitor the drive load pressure of the drive mechanism 1 to determine the switching operation of the drive mechanism 1 according to the drive load pressure. In abnormal circumstances, when the first sensing member 341 or the second sensing member 342 fails, when the load mechanism 2 has been executed, the drive mechanism 1 continues to drive the load mechanism 2, and the load mechanism 2 cannot continue to rotate due to structural interference, thereby increasing the drive load pressure of the drive mechanism 1. The drive load monitoring module 37 can monitor the drive load pressure of the drive mechanism 1. When the drive load pressure exceeds the limit, it prompts to shut down the drive mechanism 1 to avoid damage to the load mechanism 2 due to structural collision. It can also protect the drive mechanism 1 from problems such as circuit fusing due to the drive load pressure.

[0075] Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0076] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0077] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A rotation control device for an electric actuator, wherein the rotation control device is arranged between a driving mechanism and a load mechanism, wherein the driving mechanism is used to drive the load mechanism to rotate, and wherein: The rotation control device includes a shell having an accommodating cavity and a driving rod. Both ends of the driving rod pass through the accommodating cavity and are respectively connected to the driving mechanism and the loading mechanism in a one-to-one correspondence. A trigger member is provided on the driving rod, and a first sensing member and a second sensing member are provided in the accommodating cavity. The loading mechanism has an open state and a closed state. When the loading mechanism is in the open state, the trigger member triggers the first sensing member. When the loading mechanism is in the closed state, the trigger member triggers the second sensing member.

2. The rotation control device of the electric actuator according to claim 1, characterized in that: The triggering member is sleeved on the driving rod, and a thread groove is provided on the surface of the driving rod. The rotation of the driving rod can drive the triggering member to move along the axis of the driving rod.

3. The rotation control device of the electric actuator according to claim 2, characterized in that: A matching rod parallel to the driving rod is further provided in the accommodating cavity, and the matching rod matches with the trigger member to limit the rotation of the trigger member around the axis of the driving rod.

4. The rotation control device of the electric actuator according to claim 1, characterized in that: The first induction component and the second induction component are respectively located at two ends of the driving rod, and the trigger component is located between the first induction component and the second induction component.

5. The rotation control device of the electric actuator according to claim 4, characterized in that: The first sensing member and the second sensing member are tilted relative to the axis of the driving rod to have a sensing slope facing the trigger member. The trigger member is provided with contact slopes at both ends along the axis of the driving rod, and the multiple contact slopes correspond one to one to the sensing slopes.

6. The rotation control device of the electric actuator according to claim 5, characterized in that: Each of the plurality of sensing slopes is provided with a pressure sensor, and an elastic connection structure is provided between the pressure sensor and the sensing slope; Alternatively, pressure sensors are provided on the contact inclined surfaces at both ends of the trigger member, and an elastic connection structure is provided between the pressure sensor and the contact inclined surfaces.

7. The rotation control device of the electric actuator according to claim 1, characterized in that: The driving rod is also provided with a first rest piece and a second rest piece. The trigger piece includes a main body and a rest portion. When the loading mechanism is in the open state, the rest portion cooperates with the first rest piece. When the loading mechanism is in the closed state, the rest portion cooperates with the second rest piece to limit the movement of the trigger piece.

8. The rotation control device of the electric actuator according to claim 7, characterized in that: The first resting piece and the second resting piece are fixed to the housing, and the first resting piece and the second resting piece surround the driving rod.

9. The rotation control device of the electric actuator according to claim 7, characterized in that: The first sensing member, the second sensing member and the trigger member are located between the first rest member and the second rest member. There is an avoidance gap between the first sensing member, the second sensing member and the driving rod. The cross-sectional size of the rest portion is smaller than that of the main body. The rest portion can pass through the avoidance gap and cooperate with the first rest member or the second rest member.

10. The rotation control device of the electric actuator according to claim 1, characterized in that: The rotation control device is provided with a driving load monitoring module capable of monitoring the driving load pressure of the driving mechanism to determine the switching operation of the driving mechanism according to the driving load pressure.

Images