Intelligent hydraulic actuator

Abstract

The utility model relates to hydraulic actuator technical field, the utility model provides an intelligent hydraulic actuator, including execution body, the inside top of execution body is provided with the oil inlet chamber, the inside of execution body is provided with the first straight oil channel, second straight oil channel, third straight oil channel and fourth straight oil channel who links the inside of oil inlet chamber and the inside diameter order increases, still be installed with straight line execution mechanism in execution body, and straight line execution mechanism includes the first piston rod, second piston rod, third piston rod and fourth piston rod who correspond to sliding plug -in in four straight oil channel interiors, and the end fixed disc of installation in four piston rod bottom end and the execution lever head of distribution in its bottom center, the inside bottom rotation joint of oil inlet chamber has the conversion rotary disc that seals every straight oil channel upper port, this intelligent hydraulic actuator passes through multi -path flow control and high -precision rotation switching technology, has realized the intelligent regulation function of multispeed push, has satisfied the flexible demand of different working condition to thrust and speed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic actuator technology, and specifically to an intelligent hydraulic actuator. Background Technology

[0002] Linear hydraulic actuators, as key actuators in hydraulic transmission systems, are widely used in machinery manufacturing, automation equipment, construction machinery, and precision control. Their main function is to convert hydraulic energy into linear motion, enabling pushing, pulling, or positioning operations on workpieces. Traditional linear hydraulic actuators typically have a simple structure, employing a single oil passage and a single piston rod design. They rely on the pressure of hydraulic oil to drive the piston rod to perform linear motion, offering advantages such as high thrust, fast response, and compact structure. However, with the development of automation and intelligent technologies, industrial production has placed higher demands on the speed control and multifunctionality of actuators, and single-channel linear hydraulic actuators have gradually revealed many shortcomings in practical applications.

[0003] Existing single-channel linear hydraulic actuators typically only achieve fixed thrust and speed outputs, lacking the ability to flexibly adjust the thrust speed, making it difficult to meet the complex application requirements of multiple working conditions and multiple tasks. In situations requiring rapid response or fine adjustment, a single speed often leads to low execution efficiency or insufficient control precision.

[0004] Therefore, this solution proposes an intelligent hydraulic actuator to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an intelligent hydraulic actuator.

[0006] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows: An intelligent hydraulic actuator includes an actuator body. An oil inlet chamber is provided at the top of the actuator body. The actuator body is provided with a first linear oil passage, a second linear oil passage, a third linear oil passage, and a fourth linear oil passage, which are connected to the inside of the oil inlet chamber and have increasing inner diameters. A linear actuator is also installed in the actuator body. The linear actuator includes a first piston rod, a second piston rod, a third piston rod, and a fourth piston rod that are correspondingly slidably inserted into the four linear oil passages, as well as end fixing plates installed at the bottom of the four piston rods and actuator rod heads distributed at the center of their bottoms. A conversion disc that seals the upper port of each linear oil passage is rotatably engaged at the bottom of the oil inlet chamber. The conversion disc has only one oil guide hole. The top of the conversion disc is connected to a rotary drive component provided at the top of the actuator body through a transmission shaft.

[0007] Preferably, the inner diameter ratio of the first, second, third, and fourth straight oil passages is set to 1:1.3:1.6:2, and the rod diameters of the first, second, third, and fourth piston rods are consistent with the inner diameters of the first, second, third, and fourth straight oil passages.

[0008] Preferably, the centers of the upper ends of the first, second, third, and fourth straight oil passages are all located on the circular trajectory of the center of the oil guide hole.

[0009] Preferably, the converter disc is also provided with three air guide channels, and three other straight oil passages that are not connected to the oil guide holes are connected to the three air guide channels. The actuator body is provided with an annular venting cavity that is connected to the outer ports of the three air guide channels, and the outer wall of the actuator body is provided with several vent holes that are connected to the inside of the annular venting cavity.

[0010] Preferably, the rotary drive component includes a rotating shaft, a worm gear, a worm, a worm positioning plate, a servo motor, a drive gear, a transmission gear, and a driven gear. The rotating shaft is connected to the top center of the transmission shaft. The worm gear is fixedly sleeved on the rotating shaft. The worm has two symmetrical meshing parts on both sides of the worm gear. The worm positioning plates are distributed parallel to each other front and back as positioning structures for the worm on both sides. The servo motor is mounted on the top of the actuator body. The drive gear is connected to the output end of the servo motor. The driven gears are respectively connected to the front ends of the worms on both sides. The transmission gear has two corresponding meshing parts between the drive gear and the driven gears on both sides.

[0011] Preferably, a protective cover is installed on the top of the actuator body, covering the rotary drive component.

[0012] Preferably, an oil inlet pipe and an oil return pipe communicating with the inside of the oil inlet chamber are respectively provided on the left and right sides of the top of the actuator body.

[0013] Preferably, guide posts are provided at the top edge of the end fixing plate near the four poles, and the four guide posts are slidably connected to the inner wall of the actuator body.

[0014] The beneficial effects of this utility model are reflected in:

[0015] Multi-channel switching enables multi-speed pushing function: By setting four straight oil passages with different inner diameter ratios (1:1.3:1.6:2), combined with the rotational positioning of the oil guide holes on the conversion disc, selective oil supply to different straight oil passages is achieved. This design allows the piston rod to advance at different speeds in different straight oil passages under the same oil pressure conditions. In particular, the thinner second straight oil passage can achieve a faster pushing action, thereby meeting the diverse needs for pushing speed and thrust under different working conditions and improving the adaptability and flexibility of the actuator.

[0016] High-precision rotary positioning and guiding structure ensure motion stability: The conversion disc is connected to the rotary drive component via a transmission shaft, and uses a worm gear transmission structure and servo motor drive to achieve precise rotary positioning of the oil guide hole, ensuring accurate and reliable oil circuit switching. The guide post on the end fixed plate slides through the inner wall of the actuator body, effectively preventing piston rod offset, jamming, and lateral vibration, significantly improving the actuator's motion smoothness and positioning accuracy.

[0017] Gas discharge and pressure balance design improves motion reliability: The air guide channel set in the conversion disc is connected to the internal annular ventilation chamber and the ventilation hole on the outer wall of the actuator, which can promptly discharge the gas generated by the piston rod moving with the end fixed plate in the non-working oil passage, avoid motion obstruction and pressure abnormality caused by gas accumulation, and ensure the stability and reliability of the actuator during long-term operation.

[0018] Compact and well-protected transmission mechanism design: The rotary drive uses worm gear and multi-stage gear transmission, which is compact in structure, has high transmission efficiency, and is equipped with a protective cover to effectively prevent external impurities from entering, protect the transmission mechanism from damage, extend the service life of the equipment and reduce the frequency of maintenance.

[0019] This intelligent hydraulic actuator, through multi-path flow control and high-precision rotary switching technology, achieves intelligent adjustment of multi-speed thrust, meeting the flexible needs of different working conditions for thrust and speed. The rational design of the guide column and end fixing plate effectively avoids jamming and vibration during piston rod movement, improving overall operational stability and positioning accuracy. The gas discharge channel solves the problem of motion obstruction caused by gas accumulation, ensuring long-term reliable operation of the equipment. The compact and well-protected transmission mechanism design not only improves transmission efficiency but also extends mechanical life. In summary, this intelligent hydraulic actuator has a reasonable structure, diverse functions, and stable performance, possessing excellent application prospects. It can be widely used in automated equipment, precision machinery, and high-requirement hydraulic control systems, effectively promoting technological progress and industrial upgrading in related fields. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the internal structure of the oil inlet chamber of this utility model;

[0022] Figure 2 This is a schematic diagram showing the distribution of the four straight oil passages of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the rotary drive component of this utility model;

[0024] Figure 4 This is a structural schematic diagram of the linear actuator of this utility model;

[0025] Figure 5 This is a schematic diagram of the overall external structure of this utility model;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Actuating body; 2. First linear oil passage; 3. Second linear oil passage; 4. Third linear oil passage; 5. Fourth linear oil passage; 6. Converter disc; 7. Drive shaft; 8. Rotary drive component; 9. Linear actuator;

[0028] 11. Oil inlet chamber; 12. Annular vent chamber; 13. Vent hole; 14. Oil inlet pipe; 15. Oil return pipe; 16. Protective cover; 17. Guide column;

[0029] 61. Oil guide hole; 62. Air guide channel;

[0030] 81. Rotating shaft; 82. Worm gear; 83. Worm; 84. Worm positioning plate; 85. Servo motor; 86. Drive gear; 87. Transmission gear; 88. Driven gear;

[0031] 91. First piston rod; 92. Second piston rod; 93. Third piston rod; 94. Fourth piston rod; 95. End fixing plate; 96. Actuating rod head. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0033] It should be noted that if the utility model embodiment involves directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

[0035] Please refer to the instruction manual appendix. Figures 1-5This utility model provides an intelligent hydraulic actuator, including an actuator body 1. An oil inlet chamber 11 is provided at the top of the actuator body 1, and a conversion disc 6 is rotatably engaged at the bottom of the oil inlet chamber 11. The conversion disc 6 closes the upper ports of each straight oil passage, leaving only one guide hole 61. The conversion disc 6 is connected to a rotary drive component 8 located at the top of the actuator body 1 via a drive shaft 7, achieving rotational positioning of the guide hole 61.

[0036] The actuator body 1 has four straight oil channels that are sequentially connected to the oil inlet chamber 11: the first straight oil channel 2, the second straight oil channel 3, the third straight oil channel 4, and the fourth straight oil channel 5. Their inner diameters increase sequentially in the ratio of 1:1.3:1.6:2. Each straight oil channel has a first piston rod 91, a second piston rod 92, a third piston rod 93, and a fourth piston rod 94 with corresponding diameters slidably inserted into it. This design allows for variations in ejection speed when the same oil pressure is injected into the oil inlet chamber 11, with the thinner straight channel 3 achieving a faster linear pushing operation. The bottom ends of the four piston rods are fixedly connected to end fixing disks 95. Actuating rod heads 96 are distributed at the center of the bottom of the end fixing disks 95. Guide posts 17 are located near the four extreme points on the top edge of the end fixing disks. The guide posts 17 slidably penetrate the inner wall of the actuator body 1, providing precise guidance and preventing piston rod deviation. This effectively avoids jamming and lateral vibration of the piston rod during movement, improving the actuator's motion stability and positioning accuracy.

[0037] The conversion disc 6 also has three air guide channels 62, corresponding to the three straight oil passages other than the current oil guide hole 61. The outer ports of the three air guide channels 62 are connected to the annular vent chamber 12 inside the actuator body 1. The outer wall of the annular vent chamber 12 is provided with several vent holes 13, which are used to discharge the gas and balance the pressure inside the piston rod following the end fixed plate 95 in the non-working straight oil passage, and to prevent the accumulation of gas from causing the linear actuator to move.

[0038] The rotary drive component 8 includes a rotating shaft 81, a worm gear 82, a worm 83, a worm positioning plate 84, a servo motor 85, a drive gear 86, a transmission gear 87, and a driven gear 88. The rotating shaft 81 is aligned with the top center of the transmission shaft 7, and the worm gear 82 is fixedly sleeved on the rotating shaft 81. The two worms 83 are symmetrically meshed with the two sides of the worm gear 82, and the worm positioning plates 84 are distributed parallel to each other front and back as positioning structures for the two worms 83. The servo motor 85 is mounted on the top of the actuator body, and its output end is connected to the drive gear 86. The drive gear 86 meshes with two transmission gears 87, which in turn mesh with driven gears 88 on both sides. The driven gears 88 are connected to the worm gear 83. The servo motor 85 serves as the power source, and its output end is connected to the drive gear 86. The drive gear transmits power to the driven gears 88 on both sides through the transmission gears 87. The driven gears 88 then drive the worm gear 83 to rotate, thereby driving the rotating shaft 81 and the conversion disc 6 to rotate precisely, thus rotating the oil guide hole 61 on the conversion disc 6 to the corresponding position of the straight oil passage. A protective cover 16 is provided on the top of the actuator body 1 to cover the rotating drive component 8, preventing external impurities from entering and protecting the transmission mechanism.

[0039] The top left and right sides of the actuator body 1 are respectively provided with an oil inlet pipe 14 and an oil return pipe 15 that communicate with the inside of the oil inlet chamber 11, forming a closed loop system to ensure continuous and stable oil supply and effective oil discharge of the hydraulic system.

[0040] The working principle of this intelligent hydraulic actuator is as follows:

[0041] When the system starts, hydraulic oil enters the oil inlet chamber 11 at the top of the actuator body 1 through the oil inlet pipe 14. After receiving the control signal, the servo motor 85 drives the drive gear 86 at its output end. The drive gear 86 meshes with the transmission gear 87, which in turn drives the driven gears 88 on both sides. The driven gears 88 drive the worm gear 83 to rotate. The worm gear 83 meshes with the worm wheel 82 fixedly sleeved on the rotating shaft 81, pushing the rotating shaft 81 and the transmission shaft 7 connected to its top to rotate, thereby driving the conversion disc 6 to rotate, so that the oil guide hole 61 is aligned with one of the required first straight oil passage 2, second straight oil passage 3, third straight oil passage 4, or fourth straight oil passage 5.

[0042] Hydraulic oil enters the corresponding linear oil passage through the aligned guide hole 61, pushing the first piston rod 91, second piston rod 92, third piston rod 93, or fourth piston rod 94 with matching diameters to slide. The end plate 95, fixedly connected to the bottom of the piston rod, drives the actuator head 96 to output linear power. Since the inner diameters of the four linear oil passages increase sequentially in the ratio of 1:1.3:1.6:2, the piston rod advance speeds differ under the same oil pressure. The thinner second linear oil passage 3 can achieve a faster pushing action.

[0043] The three air guide channels 62 opened in the conversion disc 6 correspond to the three straight oil passages in the non-working state. These air guide channels 62 are connected to the annular vent chamber 12 inside the actuator body 1. The outer wall of the annular vent chamber 12 is provided with several vent holes 13, which are used to discharge the gas generated by the piston rod moving with the end fixed plate 95 in the non-working oil passage, maintain pressure balance, and prevent gas accumulation from causing motion obstruction.

[0044] After the hydraulic oil completes its driving function, it is discharged through the return oil pipe 15, forming a closed loop in the hydraulic system to ensure continuous and stable oil supply and discharge. A protective cover 16 is installed on the top of the actuator body 1 to cover the rotating drive component 8, preventing external impurities from entering and protecting the normal operation of the transmission mechanism. Through the above coordinated actions, the intelligent hydraulic actuator achieves precise, efficient, and linear execution.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent hydraulic actuator, comprising an actuator body (1), characterized in that, The actuator body (1) has an oil inlet chamber (11) at its top. The actuator body (1) has a first linear oil passage (2), a second linear oil passage (3), a third linear oil passage (4), and a fourth linear oil passage (5) with increasing inner diameters, which are connected to the inside of the oil inlet chamber (11). The actuator body (1) also has a linear actuator (9), which includes a first piston rod (91) and a second piston rod (92) that are correspondingly slidably inserted into the four linear oil passages. The third piston rod (93) and the fourth piston rod (94), as well as the end fixing plate (95) installed at the bottom of the four piston rods and the actuator head (96) distributed at the center of its bottom, are connected to a conversion disc (6) that seals the upper port of each straight oil passage in the bottom of the oil inlet chamber (11). The conversion disc (6) has only one oil guide hole (61). The top of the conversion disc (6) is connected to the rotating drive component (8) set on the top of the actuator body (1) through the transmission shaft (7).

2. The intelligent hydraulic actuator according to claim 1, characterized in that, The inner diameter ratio of the first straight oil passage (2), the second straight oil passage (3), the third straight oil passage (4), and the fourth straight oil passage (5) is set to 1:1.3:1.6:

2. The rod diameters of the first piston rod (91), the second piston rod (92), the third piston rod (93), and the fourth piston rod (94) are consistent with the inner diameters of the first straight oil passage (2), the second straight oil passage (3), the third straight oil passage (4), and the fourth straight oil passage (5).

3. The intelligent hydraulic actuator according to claim 1, characterized in that, The center of the upper port of the first straight oil passage (2), the second straight oil passage (3), the third straight oil passage (4) and the fourth straight oil passage (5) are all located on the circular trajectory of the center of the oil guide hole (61).

4. The intelligent hydraulic actuator according to claim 1, characterized in that, The conversion disc (6) is also provided with three air guide channels (62), and the other three straight oil passages that are not connected to the oil guide hole (61) are connected to the three air guide channels (62). The actuator body (1) is provided with an annular ventilation cavity (12) that is connected to the outer port of the three air guide channels (62). The outer wall of the actuator body (1) is provided with a number of ventilation holes (13) that are connected to the inside of the annular ventilation cavity (12).

5. The intelligent hydraulic actuator according to claim 1, characterized in that, The rotary drive component (8) includes a rotating shaft (81), a worm gear (82), a worm (83), a worm positioning plate (84), a servo motor (85), a drive gear (86), a transmission gear (87), and a driven gear (88). The rotating shaft (81) is connected to the top center of the transmission shaft (7). The worm gear (82) is fixedly sleeved on the rotating shaft (81). The worm (83) has two symmetrical meshing with the two sides of the worm gear (82). The worm positioning plate (84) is distributed in parallel front and rear as a positioning structure for the two sides of the worm (83). The servo motor (85) is installed on the top of the actuator body (1). The drive gear (86) is connected to the output end of the servo motor (85). The driven gear (88) is respectively connected to the front end of the two sides of the worm (83). The transmission gear (87) has two corresponding meshing between the drive gear (86) and the two sides of the driven gear (88).

6. The intelligent hydraulic actuator according to claim 5, characterized in that, The actuator (1) is fitted with a protective cover (16) on its top surface, which covers the outside of the rotary drive (8).

7. The intelligent hydraulic actuator according to claim 1, characterized in that, The top of the actuator (1) is provided with an oil inlet pipe (14) and an oil return pipe (15) respectively, which are connected to the inside of the oil inlet chamber (11).

8. The intelligent hydraulic actuator according to claim 1, characterized in that, The end fixing plate (95) is provided with guide posts (17) at the four extreme points near the top edge of the plate, and the four guide posts (17) are slidably connected to the inner wall of the actuator body (1).

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