Counter-acting force type electro-hydraulic actuating device

Abstract

The invention discloses a counter-acting force type electro-hydraulic actuating device which comprises a shell, and at least the following components are arranged in the shell: a counterweight component and an actuating cylinder; one end of the actuating shaft is fixedly connected with the counterweight assembly, the other end of the actuating shaft is a free end, and the actuating shaft is used for transmitting hydraulic power and realizing axial reciprocating motion; and the actuating plate is attached to the inner circumferential wall of the actuating cylinder, a through hole allowing the actuating shaft to penetrate through is formed in the actuating plate, and the actuating plate is used for dividing the interior of the actuating cylinder into a first actuating cavity and a second actuating cavity. Reciprocating motion of hydraulic oil is adopted as a power source, the output efficiency of large acting force and the feasibility of design are improved, in addition, by means of the hydraulic driving mode, the electricity utilization risk is fundamentally eliminated, and system operation is safer and more reliable; and meanwhile, the fault occurrence probability can be reduced through the simple structural design.

Description

Technical Field

[0001] The invention belongs to the field of mechanical vibration control and testing, and in particular relates to a reaction force type electro-hydraulic actuating device. Background Art

[0002] At present, active vibration absorption technology has achieved initial application results in high-tech fields such as aerospace and shipbuilding, especially in the vibration control of small and medium-sized equipment. However, with the continuous advancement of science and technology and the increasing complexity of industrial development, the demand for vibration control has also increased, and the control objects have gradually expanded from small and medium-sized equipment to large equipment. This change has posed higher challenges to active vibration absorption technology, especially how to achieve large-scale power output in a confined space to cope with the line spectrum vibration problem unique to large equipment, which has become the focus and difficulty of current research.

[0003] Traditional electromagnetic actuators are unable to achieve sufficiently large actuating force output within a limited space and are unable to meet the vibration control needs of large equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a reaction force type electro-hydraulic actuating device.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a reaction force type electro-hydraulic actuating device, comprising: a housing, a counterweight, an actuating cylinder, an actuating member, including a partition, arranged inside the housing; one end of the actuating member extends out of the actuating cylinder and is fixedly connected to the counterweight;

[0006] The partition part is fitted with the inner circumferential wall of the actuator cylinder, and is used to divide the interior of the actuator cylinder into an upper first chamber and a lower second chamber, and the actuator is driven to perform axial reciprocating motion by introducing hydraulic medium into the first chamber and the second chamber.

[0007] Furthermore, the outer peripheral wall of the first chamber is connected to a first hydraulic pipe;

[0008] The outer peripheral wall of the second chamber is connected to a second hydraulic pipe;

[0009] The first hydraulic pipe and the second hydraulic pipe are used for hydraulic medium to flow through, so as to form a hydraulic pressure difference between the first chamber and the second chamber, so as to drive the actuating member to perform axial reciprocating motion.

[0010] Furthermore, the electro-hydraulic actuating device further comprises: a hydraulic system;

[0011] The hydraulic system is communicated with the first hydraulic pipe and the second hydraulic pipe respectively.

[0012] Furthermore, it also includes: a mounting base, the actuator cylinder is fixedly arranged on the mounting base,

[0013] An adjustment assembly is provided between the actuating cylinder and the mounting base, for adjusting the distance between the actuating member and the mounting base.

[0014] Furthermore, a through hole is provided in the middle of the adjusting component, and the aperture of the through hole is larger than the outer diameter of one end of the actuating member.

[0015] Furthermore, the outer diameter of the adjusting component is smaller than or equal to the outer diameter of the actuating cylinder.

[0016] Furthermore, the housing further includes: a guide rod;

[0017] One end of the guide rod is fixedly connected to the mounting base, and the other end of the guide rod passes through the counterweight and extends to the top of the shell.

[0018] Furthermore, at least two guide rods are provided, and the at least two guide rods are symmetrically arranged with the actuating member as the center.

[0019] Furthermore, the guide rod is connected to the counterweight via a bearing.

[0020] Furthermore, the housing further includes: a limit plate is arranged on the top of the guide rod, and the limit plate is fixedly connected to the guide rod.

[0021] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0022] The actuating force of the present invention is directly derived from the hydraulic oil in the hydraulic cylinder driving the actuating shaft to perform axial reciprocating motion, which completely abandons the complex electromagnetic circuit design of the traditional reaction force type electromagnetic actuating mechanism. The present invention not only simplifies the structure, but also eliminates the need for an internal heat dissipation system. Under the same volume restriction, it can integrate a larger scale of actuating counterweights, thereby significantly improving the output capacity of the actuating force and the flexibility of the design, meeting the needs of a wider range and more demanding application scenarios.

[0023] In addition, compared with traditional electromagnetic or piezoelectric actuators, the overall structure of the present invention is simpler, which fundamentally avoids potential power risks such as overcurrent and overvoltage, greatly improving the safety and reliability of equipment operation. In addition, its simplified design also directly reduces the complexity and cost of installation, daily operation and later maintenance, bringing users a more economical and efficient use experience, helping to achieve a lower total cost of ownership.

[0024] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0026] Figure 1 It is a cross-sectional view of a reaction force type electro-hydraulic actuating device of the present invention;

[0027] Figure 2 It is a side view of a reaction force type electro-hydraulic actuating device of the present invention;

[0028] Figure 3 It is a side view of a reaction force type electro-hydraulic actuating device of the present invention from another angle;

[0029] Explanation of the accompanying drawings: 1. Shell; 2. Limit plate; 3. Counterweight; 4. Hydraulic pipe; 41. First hydraulic pipe; 42. Second hydraulic pipe; 5. Actuating assembly; 51. Partition; 52. Actuating shaft; 6. Actuating cylinder; 61. First chamber; 62. Second chamber; 7. Guide rod; 8. Bearing; 9. Adjusting assembly; 91. Through hole; 10. Base.

[0030] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0032] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] like Figure 1-3 As shown, a reaction force type electro-hydraulic actuating device, a reaction force type electro-hydraulic actuating device, comprising: a shell 1, a counterweight 3, an actuating cylinder 6, and an actuating member 5 are arranged inside the shell 1, one end of the actuating member 5 extends out of the actuating cylinder 6 and is fixedly connected to the counterweight 3; the transmission member 5 comprises a partition 51; the partition 51 is in contact with the inner circumferential wall of the actuating cylinder 6, and is used to divide the interior of the actuating cylinder 6 into an upper first chamber 61 and a lower second chamber 62, and the actuating member 5 is driven to perform axial reciprocating motion by introducing hydraulic medium into the first chamber 61 and the second chamber 62.

[0036] Specifically, the shell 1 is made of high-strength, corrosion-resistant alloy materials, such as stainless steel or aluminum alloy, to ensure that the structure remains stable under the influence of internal high pressure and external environment. High-quality sealing flanges or O-rings are set at both ends of the shell 1 to ensure the sealing of the internal hydraulic system and prevent leakage of hydraulic medium. In addition, the counterweight 3 is made of a material with high density and good stability, such as lead or iron alloy; considering the balance and stability of the device, the overall shape of the counterweight 3 is designed according to the shape of the shell 1.

[0037] In this embodiment, the counterweight 3 and the actuating member 5 are fixedly connected by high-strength bolts or welding to ensure that they do not fall off during high-speed movement, and the diameter of the counterweight 3 is larger than the outer diameter of the actuating cylinder. The actuating member also includes an actuating shaft 52, one end of which is fixedly connected to the counterweight 3, and the other end of which is a free end. By introducing hydraulic medium into the first chamber 61 and the second chamber 62 to drive the actuating shaft 52 to perform axial reciprocating motion, the counterweight 3 and the actuating member 5 perform axial reciprocating motion together, and the counterweight 3 generates a reaction force to act on the actuating object after the actuating shaft 5 passes through the actuating cylinder 6, the adjusting component 9, and the base 10, thereby realizing the output of electro-hydraulic actuating force.

[0038] In a feasible embodiment, the outer peripheral wall of the first chamber 61 is connected to a first hydraulic pipe 41; the outer peripheral wall of the second chamber 62 is connected to a second hydraulic pipe 42; the first hydraulic pipe 41 and the second hydraulic pipe 42 are used for hydraulic medium to flow through, so that a hydraulic pressure difference is formed between the first chamber 61 and the second chamber 62, so as to drive the actuator 5 to perform axial reciprocating motion.

[0039] In this embodiment, the electro-hydraulic actuating device further includes: a hydraulic system, and the hydraulic system is communicated with the first hydraulic pipe 41 and the second hydraulic pipe 42 respectively.

[0040] In a feasible embodiment, the electro-hydraulic actuating device further includes: a mounting base 10, the actuating cylinder 6 is fixedly disposed on the mounting base 10, and an adjustment component 9 is disposed between the actuating cylinder 6 and the mounting base 10 for adjusting the distance between the actuating member 5 and the mounting base 10.

[0041] In this embodiment, the mounting base 10 is provided with at least four screw holes for being fixedly connected with the actuator 6 by bolts, so as to ensure stable operation under high-speed and high-load conditions. The adjustment component 9 is located between the actuator 6 and the mounting base 10, and adopts a precise lead screw, slide rail or adjustment bolt structure, allowing the user to adjust the height of the adjustment component 9 according to actual needs to adjust the distance between the actuator 5 and the mounting base 10. The present invention enhances the flexibility and adaptability of the device, so that it can be applied to workpieces or test environments of different sizes.

[0042] In this embodiment, the hydraulic system is integrated near the electro-hydraulic actuating device, which is convenient for maintenance and overhaul. The hydraulic system includes key components such as a hydraulic pump, an oil tank, a filter, and a pressure control valve, which are connected to the first hydraulic pipe 41 and the second hydraulic pipe 42 through a high-pressure oil pipe. When the hydraulic system is working, the hydraulic pump sends the hydraulic medium in the oil tank into the first hydraulic pipe 41 and the second hydraulic pipe 42 through the high-pressure oil pipe. By controlling the servo control valve of the hydraulic system, the pressure and flow of the hydraulic medium entering the first chamber 61 and the second chamber 62 can be independently adjusted. When the hydraulic pressure in the first chamber 61 is higher than that in the second chamber 62, the hydraulic pressure difference drives the actuating member 5 to move in one direction along the axial direction; conversely, when the hydraulic pressure in the second chamber 62 is higher than that in the first chamber 61, the actuating member 5 moves in the opposite direction. The present application provides the design of the adjustment component 9 so that the device can easily adapt to workpieces or test environments of different sizes and shapes, thereby improving the versatility and flexibility of the device. In addition, the integrated design of the hydraulic system and the selection of high-strength and corrosion-resistant materials improve the reliability and durability of the device, while facilitating daily maintenance and overhaul.

[0043] In this embodiment, a through hole 91 is provided in the middle of the adjustment component 9, and the diameter of the through hole 91 is larger than the outer diameter of the actuating shaft 52 of the actuating member 5. The actuating shaft 52 is allowed to slide freely in the through hole 91, while maintaining sufficient clearance to prevent friction and jamming, thereby achieving axial reciprocating motion of the actuating member 5. This sliding fit reduces friction resistance and improves motion efficiency.

[0044] In this embodiment, the outer diameter of the adjusting component 9 is smaller than or equal to the outer diameter of the actuating cylinder 6 .

[0045] In a feasible embodiment, the housing 1 further includes: a guide rod 7, one end of which is fixedly connected to the mounting base 10, and the other end of which passes through the counterweight 3 and extends to the top of the housing 1. At least two guide rods 7 are provided, and the at least two guide rods are symmetrically arranged around the actuating member 5. The bottom of the guide rod 7 is connected to the mounting base 10 through threads and bolts, and passes through the counterweight 3.

[0046] In the present embodiment, the guide rod 7 is a key component connecting the mounting base 10, the counterweight 3, and the top of the shell 1, providing additional support for the entire device. The supporting function of the guide rod significantly enhances the structural stability of the device, and can effectively prevent the device from shaking or deforming when the actuator 5 is moving at high speed and high load, thereby ensuring the accuracy and reliability of the movement. Since at least two guide rods 7 are provided, and are symmetrically arranged with the actuator 5 as the center, precise guidance is provided for the reciprocating motion of the actuator 5. The guiding function of the actuator 5 enables the actuator 5 to move along a predetermined trajectory, avoiding errors caused by offset or jitter, and improving the accuracy and stability of the movement. In the present embodiment, the guide rod 7 enhances the impact resistance of the device, can absorb and disperse the impact energy to a certain extent, and protect the internal key components from damage.

[0047] In this embodiment, the guide rod 7 is connected to the counterweight 3 via a bearing 8. The bearing 8, as a connecting piece between the guide rod 7 and the counterweight 3, reduces friction and wear during the relative movement between the two, thereby helping to extend the service life of the guide rod 7 and the counterweight 3. In addition, the bearing 8 can ensure that the movement trajectory of the guide rod 7 in the counterweight 3 remains stable. Since the rolling element inside the bearing 8 can roll smoothly between the inner and outer rings, the guide rod 7 is not prone to offset or jitter during movement, thereby improving the movement accuracy of the entire device; the guide rod 7 and the counterweight 3 are connected by the bearing 8, further enhancing the support for the counterweight 3. The bearing 8 can withstand certain radial and axial loads to ensure that the counterweight 3 remains stable during the actuation process and does not deform or displace due to uneven force.

[0048] In a feasible embodiment, the shell 1 also includes: a limiting plate 2 is arranged on the top of the guide rod 7, and the limiting plate 2 is used to enhance the structural stability of the guide rod 7 while limiting the extreme displacement of the counterweight 3, thereby reducing the risk of the counterweight 3 flying out of the shell 1; in addition, the limiting plate 2 is fixedly connected to the guide rod 7.

[0049] When the counterweight 3 moves along the guide rod 7, the limit plate 2 can share part of the stress, reducing the risk of deformation or damage of the guide rod 7 due to uneven force. In addition, the limit plate 2 is arranged at the top of the guide rod 7, setting a clear upper limit position for the movement of the counterweight 3. When the counterweight 3 approaches or reaches this upper limit position during the movement, the limit plate 2 will prevent it from continuing to move upward, thereby effectively preventing the risk of the counterweight 3 flying out of the shell 1 due to excessive movement. The present invention improves the safety and reliability of the equipment.

[0050] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A reaction force type electro-hydraulic actuating device, characterized in that: include: A housing (1), wherein a counterweight (3), an actuating cylinder (6), and an actuating member (5) are arranged inside the housing (1), and the housing (1) includes a partition (51); One end of the actuating member (5) extends out of the actuating cylinder (6) and is fixedly connected to the counterweight member (3); The partition (51) is fitted with the inner wall of the actuator (6) and is used to divide the interior of the actuator (6) into an upper first chamber (61) and a lower second chamber (62). By introducing hydraulic medium into the first chamber (61) and the second chamber (62), the actuator (5) is driven to perform axial reciprocating motion.

2. The reaction force type electro-hydraulic actuating device according to claim 1, characterized in that: The outer peripheral wall of the first chamber (61) is connected to a first hydraulic pipe (41); The outer peripheral wall of the second chamber (62) is connected to a second hydraulic pipe (42); The first hydraulic pipe (41) and the second hydraulic pipe (42) are used for allowing hydraulic medium to flow through, so as to form a hydraulic pressure difference between the first chamber (61) and the second chamber (62), so as to drive the actuator (5) to perform axial reciprocating motion.

3. The reaction force type electro-hydraulic actuating device according to claim 2, characterized in that: The electro-hydraulic actuating device further comprises: a hydraulic system; The hydraulic system is communicated with the first hydraulic pipe (41) and the second hydraulic pipe (42) respectively.

4. The reaction force type electro-hydraulic actuating device according to claim 1, characterized in that: Also includes: A mounting base (10), wherein the actuator (6) is fixedly mounted on the mounting base (10). An adjustment assembly (9) is provided between the actuating cylinder (6) and the mounting base (10) for adjusting the distance between the actuating member (5) and the mounting base (10).

5. The reaction force type electro-hydraulic actuating device according to claim 4, characterized in that: A through hole (91) is provided in the middle of the adjustment component (9), and the diameter of the through hole (91) is larger than the outer diameter of one end of the actuating member (5).

6. The reaction force type electro-hydraulic actuating device according to claim 5, characterized in that: The outer diameter of the adjusting component (9) is smaller than or equal to the outer diameter of the actuating cylinder (6).

7. The reaction force type electro-hydraulic actuating device according to claim 6, characterized in that: The housing (1) further comprises: a guide rod (7); One end of the guide rod (7) is fixedly connected to the mounting base (10), and the other end of the guide rod (7) passes through the counterweight (3) and extends to the top of the shell (1).

8. The reaction force type electro-hydraulic actuating device according to claim 7, characterized in that: At least two guide rods (7) are provided, and the at least two guide rods are symmetrically arranged with the actuating member (5) as the center.

9. The reaction force type electro-hydraulic actuating device according to claim 8, characterized in that: The guide rod (7) is connected to the counterweight (3) via a bearing.

10. The reaction force type electro-hydraulic actuating device according to claim 9, characterized in that: The housing (1) further comprises: A limiting plate (2) is provided on the top of the guide rod (7), and the limiting plate (2) is fixedly connected to the guide rod (7).

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