Electric actuating mechanism with high stability

Abstract

The utility model discloses an electric actuating mechanism with high stability, which is characterized in that a fastening bolt is arranged in a shell, a liftable mounting frame is arranged in the shell, a tightening device corresponding to the bolt in position is arranged on the mounting frame, and the tightening device is driven by a lifting mechanism to be meshed with the bolt. And the first driving mechanism and the switching module are matched with the second driving mechanism to drive the bolt to rotate, so that the bolt fastening effect is achieved, no extra power source needs to be installed, the cost is further reduced, the bolt can be regularly fastened through the method, and the situation that the stability of the electroplating executing mechanism is affected due to bolt loosening is prevented.

Description

Technical Field

[0001] The utility model relates to the field of actuators, and more specifically, to an electric actuator with high stability. Background Art

[0002] An electric actuator is a mechatronic device that receives electrical signals (such as 4-20mA, 0-10V, etc.) from an automation control system and converts them into corresponding linear or angular displacement outputs, thereby controlling the opening and closing of terminal control elements such as valves, dampers, and air doors, and achieving precise control of pipeline medium flow, pressure, temperature and other parameters.

[0003] Electric actuators are widely used in industrial automation, building automation, process control and other fields. They are also widely used on ships. Ships can use electric actuators to perform auxiliary controls such as valve control, steering gear control, ventilation system, fire protection system, cargo hold management system, etc. However, due to the long-term sailing of ships at sea, ships will encounter various dynamic loads at sea, including wave impact, swaying, torsional force and machine vibration. These factors may cause the connectors of the electric actuator, such as screws, to gradually loosen. Loosening of fixing screws will cause the overall stability of the actuator to decrease, and then cause the equipment to generate greater vibration during operation, which will not only increase the noise of the equipment, but also accelerate the wear of the equipment and reduce its service life. In severe cases, it may also cause mechanical failure or electrical failure, which will affect the normal operation of some functions of the ship.

[0004] Based on the above, the purpose of the present invention is to provide an electric actuator with high stability to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an electric actuator with high stability. The utility model arranges a fastening bolt in a housing, and then arranges a liftable mounting frame in the housing. A tightener corresponding to the position of the bolt is arranged on the mounting frame. The tightener is driven to engage with the bolt through a lifting mechanism, and then the bolt is driven to rotate through a driving mechanism, thereby achieving the effect of tightening the bolt. The bolt can be tightened regularly through the above method to prevent the bolt from loosening and affecting the stability of the electroplating actuator.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: an electric actuator with high stability, including a shell, a motor and a drive shaft are arranged in the shell, a drive mechanism 1 for driving the drive shaft to rotate is arranged in the shell, a mounting cavity is arranged in the shell, a plurality of mounting holes are arranged in the mounting cavity, a mounting frame is slidably arranged in the mounting cavity, a number and position of tighteners corresponding to the mounting holes are rotatably connected to the mounting frame, a lifting mechanism for driving the mounting frame to lift and lower and a drive mechanism 2 for driving the tightener to rotate are arranged in the shell, and a through groove is arranged on the shell.

[0007] By adopting the above technical solution, when installing the electric actuator, the fastening bolt is inserted into the mounting hole through the through slot, and then the tightener is driven down by the lifting mechanism to engage with the driving part of the bolt, and then the tightener is driven to rotate by the driving mechanism 2, and then the bolt is driven to rotate, so that the housing is installed on the base to be installed, and then the drive shaft is fixedly connected to the controlled components, and then the drive shaft is driven to rotate by the driving mechanism 1, thereby achieving the function of controlling the required components.

[0008] The utility model is further configured as follows: a rotating rod is rotatably connected to the shell, and a hand wheel is arranged on the rotating rod.

[0009] The utility model is further configured as follows: drive mechanism 2 includes a driven gear 1 fixedly connected to the tightener, and a switching module is provided between drive mechanism 1 and the drive shaft, driven gear 1, and rotating rod, and the switching module can switch between drive mechanism 1 driving the drive shaft, drive mechanism 1 driving driven gear 1, and rotating rod driving the drive shaft.

[0010] The utility model is further configured as follows: the first driving mechanism comprises a worm gear mechanism, the worm gear mechanism comprises a worm wheel and a worm, the worm wheel and the worm are both rotatably connected to the housing, and the worm is fixedly connected to the output shaft of the motor.

[0011] The utility model is further configured as follows: the switching module includes an electric push rod 1 fixedly connected to the shell, a switching sleeve is rotatably connected to the protruding end of the electric push rod 1, a driving gear 1, a driving gear 2 and an inner gear ring are provided on the switching sleeve, a driven gear 2 is provided on the driving shaft, a tooth groove meshing with the driving gear 1 is provided on the worm gear, and a linkage groove for inserting a rotating rod is provided on the switching sleeve, and the linkage groove and the rotating rod are both polygonal structures.

[0012] The utility model is further configured as follows: the lifting mechanism comprises a second electric push rod fixedly connected to the housing, and the extended end of the second electric push rod is fixedly connected to the mounting frame.

[0013] The utility model is further configured as follows: a sealing gasket is arranged on the shell, and a clamping portion which can block the through groove is arranged on the sealing gasket.

[0014] The utility model is further configured as follows: the shell is divided into an upper shell, a middle shell and a lower shell which are detachably assembled.

[0015] In summary, the utility model has the following beneficial effects:

[0016] The utility model arranges a fastening bolt in a shell, and then arranges a liftable mounting frame in the shell, and arranges a tightener corresponding to the position of the bolt on the mounting frame, drives the tightener to engage with the bolt through a lifting mechanism, and then drives the bolt to rotate through a driving mechanism 1 and a switching module in cooperation with a driving mechanism 2, thereby achieving the effect of tightening the bolt, and there is no need to install an additional power source, thereby reducing costs. The bolts can be tightened regularly through the above method to prevent the bolts from loosening and affecting the stability of the electroplating actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of this utility model patent Figure 1 ,shows the overall structure of the electric actuator;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model patent Figure 2 ,In the figure, the switching module is in a state where the rotating rod drives the driving shaft;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model patent Figure 3 ,In the figure, the switching module is in the state where the driving mechanism 1 drives the driven gear 1;

[0020] Figure 4 This is a schematic diagram of the structure of this utility model patent Figure 4 ,In the figure, the switching module is in the state of driving mechanism 1 driving the driving shaft;

[0021] Figure 5 This is a schematic diagram of the structure of this utility model patent Figure 5 , showing the structure of the alveolar structure.

[0022] In the figure: 1. housing; 2. drive shaft; 3. linkage groove; 4. mounting cavity; 5. mounting hole; 6. mounting frame; 7. tightener; 8. through groove; 9. rotating rod; 10. handwheel; 11. driven gear 1; 12. motor; 13. worm gear; 14. worm; 15. electric push rod 1; 16. switching sleeve; 17. drive gear 1; 18. drive gear 2; 19. inner gear ring; 20. driven gear 2; 21. electric push rod 2; 22. tooth groove; 23. sealing gasket; 24. upper housing; 25. middle housing; 26. lower housing; 27. inner cavity 1; 28. inner cavity 2. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The utility model is described in detail below in conjunction with the accompanying drawings.

[0027] An electric actuator with high stability, such as Figures 1 to 5 As shown, it includes a shell 1, which is provided with an inner cavity 1 and an inner cavity 2. A motor 12 is installed in the inner cavity 1, and electronic components required for the electric actuator (such as a controller, a memory, a communication interface, etc.) are installed in the inner cavity 2. A driving shaft 2 is rotatably connected to the shell, and a driving mechanism 1 for driving the driving shaft 2 to rotate is provided in the shell 1. A mounting cavity 4 is provided in the shell 1, and a plurality of mounting holes 5 are provided in the mounting cavity 4. A mounting frame 6 is slidably connected in the mounting cavity 4, and a tightener 7 whose number and position correspond to the mounting holes 5 is rotatably connected to the mounting frame 6. A limiting structure can be set between the mounting frame and the inner wall of the mounting cavity 4, or the mounting cavity and the mounting frame can be designed into a polygonal structure to prevent the tightener on the mounting frame from being offset relative to the mounting hole during movement. A lifting mechanism for driving the mounting frame 6 to lift and lower and a driving mechanism 2 for driving the tightener 7 to rotate are provided in the shell 1, and a through groove 8 is provided in the shell 1.

[0028] Furthermore, a rotating rod 9 is rotatably connected to the housing 1 , and a hand wheel 10 is mounted on the rotating rod 9 .

[0029] Furthermore, the driving mechanism 2 includes a driven gear 11 fixedly connected to the tightener 7, and a switching module is provided between the driving mechanism 1 and the driving shaft 2, the driven gear 11, and the rotating rod. The switching module can switch between the driving mechanism 1 driving the driving shaft 2 to rotate, the driving mechanism 1 driving the driven gear 11 to rotate, and the rotating rod driving the driving shaft 2 to rotate.

[0030] Furthermore, the driving mechanism 1 includes a worm gear mechanism, which includes a worm wheel 13 and a worm 14 . The worm wheel 13 and the worm 14 are both rotationally connected to the housing 1 , and the worm 14 is fixedly connected to the output shaft of the motor 12 .

[0031] Furthermore, the switching module includes an electric push rod 15 fixedly connected to the housing 1, and a switching sleeve 16 is rotatably connected to the protruding end of the electric push rod 15, and a driving gear 17, a driving gear 2 18 and an inner gear ring 19 are fixedly connected to the switching sleeve 16, and a driven gear 2 20 is fixedly connected to the drive shaft 2. The worm gear 13 is provided with a tooth groove 22 meshing with the driving gear 17, and the switching sleeve 16 is provided with a linkage groove 3 for inserting the rotating rod 9. The linkage groove 3 and the rotating rod 9 are both polygonal structures, and the driving gear 1, driving gear 2, driven gear 1, driven gear 2, the tooth groove and the rotating rod are all provided with chamfers on the teeth or the positions where they are connected to each other to facilitate mutual engagement.

[0032] Furthermore, the lifting mechanism includes an electric push rod 21 fixedly connected to the housing 1 , and an extended end of the electric push rod 21 is fixedly connected to the mounting frame 6 .

[0033] Furthermore, a sealing gasket 23 is provided on the housing 1 . The sealing gasket is made of rubber. A clamping portion that can block the through groove 8 is integrally formed on the sealing gasket 23 .

[0034] Furthermore, the housing 1 is divided into an upper housing 24 , a middle housing 25 and a lower housing 26 which are detachably assembled.

[0035] Working principle: When installing the electric actuator, insert the fastening bolt into the mounting hole 5 through the through slot 8, cover it with the sealing gasket 23, and then drive the mounting frame 6 to descend through the electric push rod 21, thereby driving the tightener 7 to engage with the driving part of the bolt. In this embodiment, hexagonal bolts are used, and the tightener 7 is a hexagonal structure with chamfers. In other embodiments, bolts of other structures can be used, and the tightener 7 can be changed according to the structure of the driving part of the bolt.

[0036] Then, the switching sleeve 16 is driven to move by the electric push rod 15 until the driving gear 17 is inserted into the tooth groove 22 and meshed with it. At this time, the driving gear 2 18 is meshed with the driven gear 11, and then the worm 14 is driven to rotate by the motor 12. The worm 14 drives the switching sleeve 16 to rotate through the worm wheel 13, the tooth groove 22 and the driving gear 17. The switching sleeve 16 then drives the tightener 7 to rotate through the driving gear 2 18 and the driven gear 11, thereby driving the bolt to rotate, so that the housing 1 is installed on the required installation base, and then the driving shaft 2 is fixedly connected to the input shaft of the equipment to be controlled, that is, the installation of the electric actuator is completed. It is also possible to set a program in the controller, and then periodically tighten the bolts automatically through the above method to prevent the bolts from loosening and affecting the stability of the electroplating actuator.

[0037] When it is necessary to drive the corresponding equipment through the electric actuator, the electric push rod 21 drives the switching sleeve 16 to move until the driving gear 2 18 is separated from the driven gear 1 11, and the inner ring gear 19 is engaged with the driven gear 2 20. At this time, the output shaft of the driving motor 12 rotates, and the motor 12 will drive the driving shaft 2 to rotate through the worm 14, the worm wheel 13, the tooth groove, the driving gear 1 17, the switching sleeve 16, the inner ring gear 19 and the driven gear 2 20 in sequence, thereby driving the corresponding equipment.

[0038] When the motor 12 fails or other situations require manual driving of the drive shaft 2 to rotate, the electric push rod 21 drives the switching sleeve 16 to move until the rotating rod 9 is inserted into the linkage groove 3 and meshes with it, and the driving gear 17 and the tooth groove 22 are separated. At this time, the user rotates the handwheel 10, and the handwheel 10 will drive the drive shaft 2 to rotate through the rotating rod 9, the switching sleeve 16, the inner gear ring 19, and the driven gear 2 20 in sequence, thereby driving the corresponding equipment.

[0039] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An electric actuator with high stability, comprising a housing (1), a drive shaft (2) disposed in the housing (1), and a drive mechanism for driving the drive shaft (2) to rotate disposed in the housing (1), characterized in that: The shell (1) is provided with a mounting cavity (4), the mounting cavity (4) is provided with a plurality of mounting holes (5), a mounting frame (6) is slidably provided in the mounting cavity (4), the mounting frame (6) is rotatably connected with tighteners (7) whose number and positions correspond to the mounting holes (5), the shell (1) is provided with a lifting mechanism for driving the mounting frame (6) to lift and lower, and a driving mechanism (2) for driving the tighteners (7) to rotate, and the shell (1) is provided with a through slot (8).

2. The electric actuator with high stability according to claim 1, characterized in that: The housing (1) is rotatably connected to a rotating rod (9), and the rotating rod (9) is provided with a hand wheel (10).

3. The electric actuator with high stability according to claim 2, characterized in that: The driving mechanism 2 comprises a driven gear 1 (11) fixedly connected to the tightener (7); a switching module is provided between the driving mechanism 1 and the driving shaft (2), the driven gear 1 (11), and the rotating rod (9); the switching module can switch between the driving mechanism 1 driving the driving shaft (2) to rotate, the driving mechanism 1 driving the driven gear 1 (11) to rotate, and the rotating rod (9) driving the driving shaft (2) to rotate.

4. The electric actuator with high stability according to claim 3, characterized in that: The first driving mechanism comprises a motor (12) and a worm gear mechanism, wherein the worm gear mechanism comprises a worm wheel (13) and a worm (14), wherein the worm wheel (13) and the worm (14) are both rotationally connected to the housing (1), and the worm (14) is fixedly connected to the output shaft of the motor (12).

5. The electric actuator with high stability according to claim 4, characterized in that: The switching module comprises an electric push rod (15) fixedly connected to a housing (1); a switching sleeve (16) is rotatably connected to the protruding end of the electric push rod (15); a driving gear (17), a driving gear (18) and an inner gear ring (19) are arranged on the switching sleeve (16); a driven gear (20) is arranged on the driving shaft (2); a tooth groove (22) meshing with the driving gear (17) is arranged on the worm gear (13); a linkage groove (3) for inserting a rotating rod (9) is arranged on the switching sleeve (16); and both the linkage groove (3) and the rotating rod (9) are polygonal structures.

6. The electric actuator with high stability according to claim 1, characterized in that: The lifting mechanism comprises a second electric push rod (21) fixedly connected to the housing (1), and the extended end of the second electric push rod (21) is fixedly connected to the mounting frame (6).

7. The electric actuator with high stability according to claim 1, characterized in that: The housing (1) is provided with a sealing gasket (23), and the sealing gasket (23) is provided with a clamping portion capable of blocking the through groove (8).

8. The electric actuator with high stability according to claim 1, characterized in that: The housing (1) is divided into an upper housing (24), a middle housing (25) and a lower housing (26) which are detachably assembled.

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