Actuating mechanism with auxiliary air cylinder and servo electric cylinder

Abstract

The utility model discloses an actuating mechanism with an auxiliary cylinder and a servo electric cylinder, which is characterized in that a right auxiliary cylinder barrel (6) is provided with a right auxiliary cylinder rod (8), a right rodless cavity interface (601) and a right rod cavity interface (602), and a rod end mounting plate (9) is connected between a left auxiliary cylinder rod (7) and the right auxiliary cylinder rod (8); the pressure sensor (903) is fixed to the front end of the main electric cylinder push rod (2) and arranged at the bottom of the rod end mounting plate (9), the tail end of the main electric cylinder body (1) is fixed to the upper plane of the reduction gear box (4), an output shaft of the servo motor (3) is connected with the reduction gear box (4), and the reduction gear box (4) enables the main electric cylinder push rod (2) to perform telescopic motion through a reduction gear set. According to the utility model, the static load is counteracted by utilizing the rigidity characteristic of aerodynamic force, so that the servo motor only needs to overcome the dynamic load, and the operation efficiency is ensured in a high-load scene.

Description

Technical Field

[0001] This utility model belongs to the field of drive mechanism technology, and relates to an actuator with an auxiliary cylinder and a servo electric cylinder. Background Technology

[0002] Servo electric cylinder actuators, driven by servo motors and combined with a closed-loop feedback system, can achieve high-precision position, speed, and acceleration control. Repeatability can reach ±0.002mm to ±0.01mm, making them suitable for applications requiring precise positioning. These actuators consume electrical energy only during operation, with no energy loss when stopped, making them more energy-efficient than hydraulic systems. Furthermore, they eliminate the need for hydraulic oil, avoiding the risks of oil leaks and environmental pollution.

[0003] Current servo electric cylinder actuators mainly rely on motors to directly drive the load. Although they are highly accurate, they require continuous torque output to maintain position when dealing with static loads (such as gravity or constant resistance), resulting in high energy consumption and the motor being prone to overheating.

[0004] In existing technologies, although static loads can be balanced by mechanical springs or counterweights, they suffer from problems such as limited working modes, large size, poor adjustment flexibility, and insufficient dynamic response; single servo drives are prone to insufficient thrust or reduced efficiency in high-load scenarios. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, this application provides an actuator with an auxiliary cylinder and a servo electric cylinder.

[0006] The technical solution of this utility model is as follows:

[0007] An actuator with an auxiliary cylinder and a servo cylinder includes a main electric cylinder body, a main electric cylinder push rod, a servo motor, a reduction gearbox, a left auxiliary cylinder barrel, a right auxiliary cylinder barrel, a rod end mounting plate, and a pneumatic-electric circuit box. The left auxiliary cylinder barrel is equipped with a left auxiliary cylinder rod, a left rodless cavity interface, and a left rod cavity interface. The right auxiliary cylinder barrel is equipped with a right auxiliary cylinder rod, a right rodless cavity interface, and a right rod cavity interface. A rod end mounting plate connects the left and right auxiliary cylinder rods. A pressure sensor is fixed to the front end of the main electric cylinder push rod and located at the bottom of the rod end mounting plate. The tail end of the main electric cylinder body is fixed to the upper plane of the reduction gearbox. The output shaft of the servo motor is connected to the reduction gearbox. The reduction gearbox enables the main electric cylinder push rod to perform telescopic movement through a reduction gear set.

[0008] In a preferred embodiment of this utility model: the cylinder barrel of the left auxiliary cylinder is arranged parallel to the left side of the main electric cylinder body, and the bottom of the cylinder barrel of the left auxiliary cylinder is connected to the left side wall of the reduction gearbox through the left rear hinge base. The cylinder barrel of the right auxiliary cylinder is arranged parallel to the right side of the main electric cylinder body, and the bottom of the cylinder barrel of the right auxiliary cylinder is connected to the right side wall of the reduction gearbox through the right rear hinge base.

[0009] In a preferred embodiment of this utility model: the pneumatic circuit box is connected to a compressed air inlet pipe, the compressed air inlet pipe is connected to a solenoid valve through an air filter, and the solenoid valve is equipped with a silencer.

[0010] In a preferred embodiment of this utility model: the end of the left auxiliary cylinder rod is connected to the rod end mounting plate via the left front hinge support, and the end of the right auxiliary cylinder rod is connected to the rod end mounting plate via the right front hinge support.

[0011] In a preferred embodiment of this utility model, the reduction gear set is installed inside the reduction gear box. The reduction gear set includes gears and lead screws, and the transmission ratio of the reduction gear set is in the range of 5:1 to 20:1.

[0012] In a preferred embodiment of this utility model, the pressure sensor is a piezoelectric sensor.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses an actuator with an auxiliary cylinder and a servo electric cylinder. The cylinders of the left and right auxiliary cylinders are symmetrically arranged and work in coordination with the pneumatic-electric circuit. Before movement, the cylinders of the left and right auxiliary cylinders are pre-pressurized. The rigidity of the aerodynamic force is used to offset the static load, so that the servo motor only needs to overcome the dynamic load. This retains the high precision advantage of servo drive, reduces energy consumption, and improves the system's load-bearing capacity and response speed. It avoids problems such as motor overheating, single working mode, large size, poor adjustment flexibility, and insufficient dynamic response, and ensures operating efficiency in high-load scenarios. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention in its extended state;

[0016] Figure 2 This is a three-dimensional structural diagram of the retracted state of this utility model.

[0017] Figure 3 This is a schematic diagram of the pneumatic-electric circuit of this utility model.

[0018] In the diagram: 1-Main electric cylinder body, 2-Main electric cylinder push rod, 3-Servo motor, 4-Reduction gearbox, 401-Left rear end hinged base; 402-Right rear end hinged base, 5-Left auxiliary cylinder barrel, 501-Left rodless chamber interface; 502-Left rod chamber interface, 6-Right auxiliary cylinder barrel, 601-Right rodless chamber interface, 602-Right rod chamber interface, 7-Left auxiliary cylinder rod, 8-Right auxiliary cylinder rod, 9-Rod end mounting plate, 901-Left front end hinged support, 902-Right front end hinged support, 903-Pressure sensor, 10-Pneumatic-electric circuit box, 11-Silencer, 12-Air filter, 13-Compressed air inlet pipe, 14-Solenoid valve. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, an actuator with an auxiliary cylinder and a servo cylinder includes a main electric cylinder body 1, a main electric cylinder push rod 2, a servo motor 3, a reduction gearbox 4, a left auxiliary cylinder barrel 5, a right auxiliary cylinder barrel 6, a rod end mounting plate 9, and a pneumatic-electric circuit box 10. The left auxiliary cylinder barrel 5 is equipped with a left auxiliary cylinder rod 7, a left rodless cavity interface 501, and a left rod cavity interface 502. The right auxiliary cylinder barrel 6 is equipped with a right auxiliary cylinder rod 8, a right rodless cavity interface 601, and a right rod cavity interface 602. The rod end mounting plate 9 connects the left auxiliary cylinder rod 7 and the right auxiliary cylinder rod 8. A pressure sensor 903 is fixed to the front end of the main electric cylinder push rod 2 and located at the bottom of the rod end mounting plate 9. The tail end of the main electric cylinder body 1 is fixed to the upper plane of the reduction gearbox 4. The output shaft of the servo motor 3 is connected to the reduction gearbox 4. The reduction gearbox 4 enables the main electric cylinder push rod 2 to perform telescopic movement through a reduction gear set.

[0021] The left auxiliary cylinder rod 7 divides the left auxiliary cylinder barrel 5 into a rod chamber 1 and a rodless chamber 1. The rod chamber 1 is connected to the left rod chamber interface 502, and the rodless chamber 1 is connected to the left rodless chamber interface 501. The right auxiliary cylinder rod 8 divides the right auxiliary cylinder barrel 6 into a rod chamber 2 and a rodless chamber 2. The rod chamber 2 is connected to the right rod chamber interface 602, and the rodless chamber 2 is connected to the right rodless chamber interface 601.

[0022] The left auxiliary cylinder barrel 5 is arranged parallel to the left side of the main electric cylinder body 1. The bottom of the left auxiliary cylinder barrel 5 is connected to the left side wall of the reduction gearbox 4 through the left rear hinge base 401. The right auxiliary cylinder barrel 6 is arranged parallel to the right side of the main electric cylinder body 1. The bottom of the right auxiliary cylinder barrel 6 is connected to the right side wall of the reduction gearbox 4 through the right rear hinge base 402, which facilitates installation and arrangement. The pneumatic circuit box 10 is connected to the compressed air inlet pipe 13. The compressed air inlet pipe 13 is connected to the solenoid valve 14 through the air filter 12. The solenoid valve 14 is easy to control and operate and can be remotely controlled in various ways, which improves the flexibility and convenience of the system. The solenoid valve 14 is equipped with a silencer 11, which can effectively reduce exhaust noise and improve the working environment.

[0023] The end of the left auxiliary cylinder rod 7 is connected to the rod end mounting plate 9 via the left front hinge support 901, and the end of the right auxiliary cylinder rod 8 is connected to the rod end mounting plate 9 via the right front hinge support 902. The left front hinge support 901 and the right front hinge support 902 improve installation flexibility. The reduction gear set is installed inside the reduction gearbox 4. The reduction gear set includes gears and lead screws. The transmission ratio range of the reduction gear set is 5:1 to 20:1, which is compatible with the high-precision torque output of the servo motor 3. The pressure sensor 903 is a piezoelectric sensor that detects the load status of the rod end mounting plate 9 in real time and adjusts the pressurization logic of the pneumatic circuit through feedback signals.

[0024] During the lifting motion, the air compressor connects to the compressed air inlet pipe 13, pre-pressurizes the rodless chamber one of the left auxiliary cylinder 5 through the left rodless chamber interface 501, and pre-pressurizes the rodless chamber two of the right auxiliary cylinder 6 through the right rodless chamber interface 601. The main electric cylinder push rod 2, the left auxiliary cylinder rod 7, and the right auxiliary cylinder rod 8 are simultaneously pushed and kept at the same height. When the pressure sensor 903 detects the pressure signal, the main electric cylinder push rod 2 returns to the initial position, the pneumatic-electric circuit is closed, and the rod chamber one, rodless chamber one, rod chamber two, and rodless chamber two are sealed.

[0025] When the pulling motion is performed, the solenoid valve 14 switches the valve circuit, pre-pressurizing the rod chamber 1 of the left auxiliary cylinder 5 through the left rod chamber interface 502, and pre-pressurizing the rod chamber 2 of the right auxiliary cylinder 6 through the right rod chamber interface 602. The main electric cylinder push rod 2, the left auxiliary cylinder rod 7, and the right auxiliary cylinder rod 8 pull at the same height. When the pressure sensor 903 detects the pressure signal, the main electric cylinder push rod 2 returns to the initial position, the pneumatic circuit is closed, and the rod chamber 1, rodless chamber 1, rod chamber 2, and rodless chamber 2 are closed.

[0026] The pressurization process continues until the pressure sensor 903 detects zero pressure, or until rod chamber one, rodless chamber one, rod chamber two, and rodless chamber two reach the maximum set pre-pressurization.

[0027] In summary, this utility model provides an actuator with an auxiliary cylinder and a servo electric cylinder. When performing a pushing motion, the rodless chamber preload provides thrust; when performing a pulling motion, the rod chamber preload provides pull. The auxiliary cylinder can offset all or part of the static load, so that the servo motor only needs to overcome the dynamic load or the remaining static load, thereby reducing the overall power consumption and ensuring operating efficiency in high-load scenarios.

[0028] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details.

Claims

1. An actuator with an auxiliary cylinder and a servo electric cylinder, characterized in that: The system includes a main electric cylinder body (1), a main electric cylinder push rod (2), a servo motor (3), a reduction gearbox (4), a left auxiliary cylinder barrel (5), a right auxiliary cylinder barrel (6), a rod end mounting plate (9), and a pneumatic-electric circuit box (10). The left auxiliary cylinder barrel (5) is equipped with a left auxiliary cylinder rod (7), a left rodless cavity interface (501), and a left rod cavity interface (502). The right auxiliary cylinder barrel (6) is equipped with a right auxiliary cylinder rod (8), a right rodless cavity interface (601), and a right... A rod-shaped cavity interface (602) is provided. A rod-shaped end mounting plate (9) is connected between the left auxiliary cylinder rod (7) and the right auxiliary cylinder rod (8). A pressure sensor (903) is fixed to the front end of the main electric cylinder push rod (2) and located at the bottom of the rod-shaped end mounting plate (9). The tail end of the main electric cylinder body (1) is fixed to the upper plane of the reduction gearbox (4). The output shaft of the servo motor (3) is connected to the reduction gearbox (4). The reduction gearbox (4) enables the main electric cylinder push rod (2) to perform telescopic movement through the reduction gear set.

2. The actuator with an auxiliary cylinder and a servo electric cylinder according to claim 1, characterized in that: The left auxiliary cylinder barrel (5) is arranged parallel to the left side of the main electric cylinder body (1). The bottom of the left auxiliary cylinder barrel (5) is connected to the left side wall of the reduction gearbox (4) through the left rear hinge base (401). The right auxiliary cylinder barrel (6) is arranged parallel to the right side of the main electric cylinder body (1). The bottom of the right auxiliary cylinder barrel (6) is connected to the right side wall of the reduction gearbox (4) through the right rear hinge base (402).

3. The actuator with an auxiliary cylinder and a servo electric cylinder according to claim 1, characterized in that: The pneumatic circuit box (10) is connected to the compressed air inlet pipe (13), and the compressed air inlet pipe (13) is connected to the solenoid valve (14) through the air filter (12). The solenoid valve (14) is equipped with a silencer (11).

4. The actuator with an auxiliary cylinder and a servo electric cylinder according to claim 1, characterized in that: The end of the left auxiliary cylinder rod (7) is connected to the rod end mounting plate (9) via the left front hinge support (901), and the end of the right auxiliary cylinder rod (8) is connected to the rod end mounting plate (9) via the right front hinge support (902).

5. The actuator with an auxiliary cylinder and a servo electric cylinder according to claim 1, characterized in that: The reduction gear set is installed inside the reduction gear box (4). The reduction gear set includes gears and lead screws. The transmission ratio of the reduction gear set is 5:1 to 20:

1.

6. The actuator with an auxiliary cylinder and a servo electric cylinder according to any one of claims 1-5, characterized in that: The pressure sensor (903) is a piezoelectric sensor.

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