Mute oil source hydraulic system

Abstract

The utility model discloses a silent oil source hydraulic system which comprises a hydraulic tank, a hydraulic oil pump, a hydraulic oil pump, a hydraulic oil pump, a hydraulic oil pump and a hydraulic oil pump, and an accommodating space is formed in the hydraulic tank and used for accommodating hydraulic oil; the hydraulic pump is fixedly mounted at the top of the hydraulic tank, and the hydraulic pump is used for extracting the hydraulic oil in the accommodating space; the damping mechanism is arranged at the joint of the hydraulic pump and the hydraulic box; the silencing cover is used for covering the hydraulic pump, and a silencing material is arranged on the inner surface of the silencing cover; the oil pressure pipeline is connected with the hydraulic pump, and the oil pressure pipeline is used for conveying the hydraulic oil to an execution component; the buffering structure is connected with the oil pressure pipeline and used for eliminating oil pressure fluctuation of the oil pressure pipeline, and the noise generated in the working process of the hydraulic system can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic system technology, and in particular to a silent oil source hydraulic system. Background Technology

[0002] Hydraulic systems are used in aircraft fatigue testing to drive the movement of actuators and perform fatigue tests on specific aircraft structures. A hydraulic system mainly consists of an oil reservoir, a hydraulic pump assembly, and hydraulic lines. The oil reservoir holds hydraulic oil, while the hydraulic pump assembly drives the hydraulic oil to flow through the hydraulic lines, thereby driving the actuators. The hydraulic pump assembly typically includes a motor and a pump; the motor drives the pump. In existing technologies, the hydraulic pump assembly generates significant noise during operation, causing noise pollution and creating a harsh working environment. Furthermore, the bursting of air bubbles within the oil lines during operation also generates noise. Additionally, fluctuations in the internal oil pressure of the actuators during operation also produce noise. Utility Model Content

[0003] This invention provides a silent oil-source hydraulic system that can reduce noise during the operation of the hydraulic system.

[0004] To solve the above-mentioned technical problems, this utility model provides a silent oil-source hydraulic system, comprising:

[0005] A hydraulic tank, the interior of which has a receiving space for holding hydraulic oil;

[0006] A hydraulic pump is fixedly installed on the top of the hydraulic tank, and the hydraulic pump is used to draw hydraulic oil from the containment space;

[0007] A shock-absorbing mechanism is installed at the connection between the hydraulic pump and the hydraulic tank;

[0008] A soundproof cover is used to cover the hydraulic pump, and the inner surface of the soundproof cover is provided with sound-absorbing material;

[0009] A hydraulic pipeline is connected to the hydraulic pump, and the hydraulic pipeline is used to deliver the hydraulic oil to the actuator;

[0010] A buffer structure is connected to the hydraulic pipeline, and the buffer structure is used to eliminate hydraulic pressure fluctuations in the hydraulic pipeline.

[0011] As a preferred embodiment of the above technical solution, the buffer structure includes a buffer tank, a buffer airbag, a first fitting component, a piston component, a lower connecting rod, a connecting seat, and a connecting pipe section. The buffer tank has an internal accommodating space, and the buffer airbag is filled with gas. The buffer airbag is disposed within the accommodating space. The lower end of the first fitting component is fitted to the lower end of the buffer airbag and is movably disposed within the accommodating space. The connecting seat is disposed at the lower end of the buffer tank, and its lower end is connected to the connecting pipe section. Both ends of the connecting pipe section are interconnected with the hydraulic pipeline. A vertically extending buffer channel is formed on the connecting seat. The piston component is movably and sealingly disposed within the buffer channel. Both ends of the buffer channel are interconnected with the accommodating space and the connecting pipe section, respectively. Both ends of the lower connecting rod are connected to the first fitting component and the piston component, respectively.

[0012] As a preferred embodiment of the above technical solution, the upper surface of the first bonding component is an arc surface, and the upper surface of the first bonding component is in contact with the lower end of the buffer airbag.

[0013] As a preferred embodiment of the above technical solution, the buffer structure further includes an elastic component, the two ends of which exert elastic forces on the first fitting component and the inner wall of the buffer tank, respectively.

[0014] As a preferred embodiment of the above technical solution, the elastic component is a spring, and the spring is sleeved on the lower connecting rod.

[0015] As a preferred embodiment of the above technical solution, the buffer structure further includes a second fitting component, an upper connecting rod, a sealing seat, and a control valve. The sealing seat is sealed at the upper end of the buffer tank. The second fitting component is fixed to the upper connecting rod. The lower end of the upper connecting rod extends into the interior of the buffer airbag. The lower surface of the second fitting component is fitted with the upper end of the buffer airbag and fixed by adhesive. The upper end of the upper connecting rod passes through the sealing seat and extends into the accommodating space. An air filling hole is provided on the upper connecting rod. The control valve is located at the upper end of the upper connecting rod.

[0016] As a preferred embodiment of the above technical solution, the inner wall of the buffer tank is provided with a soft protective layer.

[0017] As a preferred embodiment of the above technical solution, the lower surface of the second bonding component is an arc surface, and a nozzle is provided at the lower end of the upper connecting rod. The nozzle is provided with a fine hole and is located inside the buffer airbag. The nozzle is connected to the air filling hole of the upper connecting rod.

[0018] As a preferred embodiment of the above technical solution, the hydraulic tank is equipped with a level gauge.

[0019] As a preferred embodiment of the above technical solution, the hydraulic tank is provided with an anti-foaming device inside, the bottom of the hydraulic tank is provided with an installation base, the lower surface of the installation base is provided with a support component, the lower end of the support component is provided with a soft pad, the soft pad is cylindrical in shape, and multiple annular grooves are formed on the outer surface of the soft pad.

[0020] This utility model provides a silent oil-source hydraulic system, which includes a hydraulic tank, a hydraulic pump, a shock-absorbing mechanism, a silencer, oil pressure pipelines, and a buffer structure. During operation, the hydraulic tank stores hydraulic oil, which is drawn from the hydraulic tank by the hydraulic pump and then delivered to the actuators through the oil pressure pipelines, thereby driving the actuators to perform static fatigue testing. Because a shock-absorbing mechanism is installed between the hydraulic pump and the hydraulic tank, and the noise generated during the operation of the hydraulic pump is eliminated by the silencer, and the noise generated during the oil pressure fluctuation is eliminated by the buffer structure installed on the oil pressure pipeline, the noise of the entire hydraulic system is greatly reduced by eliminating the noise generated in each imaging stage of the hydraulic system.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0022] Figure 1 A schematic diagram of a silent oil-source hydraulic system in this embodiment is shown.

[0023] Figure 2 A cross-sectional view of the buffer structure in this embodiment is shown;

[0024] In the diagram: 10, Hydraulic tank; 20, Hydraulic pump; 30, Hydraulic pipeline; 40, Buffer structure; 50, Mounting base; 60, Support component; 70, Soft pad; 80, Level gauge; 401, Buffer tank; 402, Buffer airbag; 403, First fitting component; 404, Lower connecting rod; 405, Connecting seat; 406, Connecting pipe section; 407, Buffer channel; 408, Piston component; 409, Elastic component; 410, Soft protective layer; 411, Nozzle; 412, Second fitting component; 413, Upper connecting rod; 414, Control valve; 415, Sealing seat; 416, Accommodation space. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See Figure 1 and Figure 2 This utility model provides a silent oil-source hydraulic system, including:

[0027] Hydraulic tank 10, the interior of hydraulic tank 10 has a receiving space for holding hydraulic oil;

[0028] The hydraulic pump 20 is fixedly installed on the top of the hydraulic tank 10. The hydraulic pump 20 is used to draw hydraulic oil from the containing space.

[0029] A shock absorption mechanism (not shown in the figure) is installed at the connection between the hydraulic pump 20 and the hydraulic tank 10;

[0030] A soundproof cover (not shown in the figure) is used to cover the hydraulic pump 20, and the inner surface of the soundproof cover is provided with sound-absorbing material;

[0031] The hydraulic line 30 is connected to the hydraulic pump 20 and is used to deliver hydraulic oil to the actuator.

[0032] The buffer structure 40 is connected to the hydraulic pipeline 30 and is used to eliminate hydraulic pressure fluctuations in the hydraulic pipeline 30.

[0033] This embodiment provides a silent hydraulic system, which includes a hydraulic tank 10, a hydraulic pump 20, a shock absorption mechanism, a silencer, an oil pressure pipeline 30, and a buffer structure 40. During operation, the hydraulic tank 10 stores hydraulic oil, which is drawn from the hydraulic tank 10 by the hydraulic pump 20 and then delivered to the actuator through the oil pressure pipeline 30, thereby driving the actuator to perform static fatigue testing. Because a shock absorption mechanism is set at the connection between the hydraulic pump 20 and the hydraulic tank 10, and the noise generated by the hydraulic pump 20 during operation is eliminated by the silencer, and the noise generated by the oil pressure fluctuation in the oil pressure pipeline 30 is eliminated by the buffer structure 40 set on the oil pressure pipeline 30, the noise of the entire hydraulic system is greatly reduced by eliminating the noise of each imaging generation link of the hydraulic system.

[0034] In a further embodiment of this invention, the buffer structure 40 includes a buffer tank 401, a buffer airbag 402, a first fitting component 403, a piston component 408, a lower connecting rod 404, a connecting seat 405, and a connecting pipe section 406. The buffer tank 401 has an internal accommodating space 416. The buffer airbag 402 is filled with gas and is disposed within the accommodating space 416. The lower end of the first fitting component 403 is fitted to the lower end of the buffer airbag 402. The first fitting component 403 is movably disposed within the accommodating space 416. In space 416, connecting seat 405 is located at the lower end of buffer tank 401. The lower end of connecting seat 405 is connected to connecting pipe section 406. Both ends of connecting pipe section 406 are connected to hydraulic pipeline 30. A vertically extending buffer channel 407 is formed on connecting seat 405. Piston component 408 is sealed and movable in buffer channel 407. Both ends of buffer channel 407 are connected to accommodating space 416 and connecting pipe section 406 respectively. Both ends of lower connecting rod 404 are connected to first fitting component 403 and piston component 408 respectively.

[0035] In this embodiment, the buffer airbag 402 is used to eliminate oil pressure fluctuations. Specifically, a piston component 408 is provided in the buffer channel 407. Since the buffer channel 407 is connected to the connecting pipe section 406, and the connecting pipe section 406 is connected to the oil pressure pipeline 30, the hydraulic oil of the system can exert force on the piston component 408. When the oil pressure changes, the piston component 408 moves in the buffer channel 407. The piston component 408 causes the buffer airbag 402 to deform through the lower connecting rod 404 and the first fitting component 403, thereby absorbing the oil pressure fluctuations and reducing the noise caused by the oil pressure fluctuations.

[0036] In a further embodiment of this invention, the upper surface of the first fitting component 403 is an arc surface, and the upper surface of the first fitting component 403 is in contact with the lower end of the buffer airbag 402.

[0037] In this embodiment, the upper surface of the first fitting component 403 is curved, which allows for better fitting between the two components and can also protect the lower end of the buffer airbag 402.

[0038] In a further embodiment of this invention, the buffer structure 40 further includes an elastic member 409, the two ends of which elastically exert force on the inner walls of the first fitting member 403 and the buffer tank 401, respectively.

[0039] In a further embodiment of this invention, the elastic component 409 is a spring, which is sleeved on the lower connecting rod 404.

[0040] The elastic component 409 in this embodiment can improve the stability of the shock absorption mechanism during operation.

[0041] In a further embodiment of this invention, the buffer structure 40 further includes a second fitting component 412, an upper connecting rod 413, a sealing seat 415, and a control valve 414. The sealing seat 415 is sealed at the upper end of the buffer tank 401. The second fitting component 412 is fixed to the upper connecting rod 413. The lower end of the upper connecting rod 413 extends into the interior of the buffer airbag 402. The lower surface of the second fitting component 412 is fitted with the upper end of the buffer airbag 402 and fixed by adhesive. The upper end of the upper connecting rod 413 passes through the sealing seat 415 and extends into the accommodating space 416. An air filling hole is provided on the upper connecting rod 413. The control valve 414 is located at the upper end of the upper connecting rod 413.

[0042] In this embodiment, the upper connecting rod 413 can be used to inflate or deflate the buffer airbag 402, thereby adjusting the saturation of the gas inside the buffer airbag 402 to adapt to different hydraulic system pressures. Specifically, if the overall oil pressure inside the hydraulic system is higher, the saturation of the buffer airbag 402 can be adjusted to achieve a match. In addition, in this embodiment, the gas inside can be either air or nitrogen.

[0043] In a further embodiment of this invention, the inner wall of the buffer tank 401 is provided with a soft protective layer 410.

[0044] In this embodiment, the inner wall of the buffer tank 401 is provided with a soft protective layer 410, which can effectively prevent the first fitting component 403 from generating noise during movement and protect the inner wall of the buffer tank 401.

[0045] In a further embodiment of this invention, the lower surface of the second fitting component 412 is an arc surface, and the lower end of the upper connecting rod 413 is provided with a nozzle 411. The nozzle 411 is provided with a fine hole and is disposed inside the buffer airbag 402. The nozzle 411 is connected to the air filling hole of the upper connecting rod 413.

[0046] In this embodiment, the gas is sprayed out by the nozzle 411 to inflate the inside of the buffer airbag 402. Of course, the buffer airbag 402 can also be deflated by controlling the valve 414.

[0047] In a further embodiment of this invention, a level gauge 80 is provided on the hydraulic tank 10.

[0048] In a further embodiment of this invention, the hydraulic tank 10 is provided with an anti-foaming device (not shown in the figure), the bottom of the hydraulic tank 10 is provided with an installation base 50, the lower surface of the installation base 50 is provided with a support member 60, the lower end of the support member 60 is provided with a soft pad 70, the soft pad 70 is cylindrical, and multiple annular grooves are formed on the outer surface of the soft pad 70.

[0049] The defoaming device in this embodiment is any device in the prior art that can eliminate air bubbles in hydraulic oil. It can effectively prevent the noise caused by the bursting of air bubbles during the operation of the hydraulic system due to the presence of a large number of air bubbles in the hydraulic oil. In addition, the setting of the soft pad 70 and the formation of multiple annular grooves on the outer surface of the soft pad 70 can absorb the vibration during the operation of the system, thereby reducing noise.

[0050] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A silent oil-source hydraulic system, characterized in that, include: A hydraulic tank, the interior of which has a receiving space for holding hydraulic oil; A hydraulic pump is fixedly installed on the top of the hydraulic tank, and the hydraulic pump is used to draw hydraulic oil from the containment space; A shock-absorbing mechanism is installed at the connection between the hydraulic pump and the hydraulic tank; A soundproof cover is used to cover the hydraulic pump, and the inner surface of the soundproof cover is provided with sound-absorbing material; A hydraulic pipeline is connected to the hydraulic pump, and the hydraulic pipeline is used to deliver the hydraulic oil to the actuator; A buffer structure is connected to the hydraulic pipeline, and the buffer structure is used to eliminate hydraulic pressure fluctuations in the hydraulic pipeline.

2. The silent oil-source hydraulic system according to claim 1, characterized in that, The buffer structure includes a buffer tank, a buffer airbag, a first fitting component, a piston component, a lower connecting rod, a connecting seat, and a connecting pipe section. The buffer tank has an internal accommodating space. The buffer airbag is filled with gas and is disposed within the accommodating space. The lower end of the first fitting component is fitted to the lower end of the buffer airbag and is movably disposed within the accommodating space. The connecting seat is disposed at the lower end of the buffer tank and is connected to the connecting pipe section. Both ends of the connecting pipe section are interconnected with the hydraulic pipeline. A vertically extending buffer channel is formed on the connecting seat. The piston component is movably and sealingly disposed within the buffer channel. Both ends of the buffer channel are interconnected with the accommodating space and the connecting pipe section, respectively. Both ends of the lower connecting rod are connected to the first fitting component and the piston component, respectively.

3. The silent oil-source hydraulic system according to claim 2, characterized in that, The upper surface of the first fitting component is curved, and the upper surface of the first fitting component is in contact with the lower end of the buffer airbag.

4. The silent oil-source hydraulic system according to claim 2 or 3, characterized in that, The buffer structure also includes an elastic component, the two ends of which exert elastic forces on the first fitting component and the inner wall of the buffer tank, respectively.

5. The silent oil-source hydraulic system according to claim 4, characterized in that, The elastic component is a spring, which is sleeved on the lower connecting rod.

6. The silent oil-source hydraulic system according to claim 2, characterized in that, The buffer structure further includes a second fitting component, an upper connecting rod, a sealing seat, and a control valve. The sealing seat is sealed at the upper end of the buffer tank. The second fitting component is fixed to the upper connecting rod. The lower end of the upper connecting rod extends into the interior of the buffer airbag. The lower surface of the second fitting component is fitted to the upper end of the buffer airbag and fixed by adhesive. The upper end of the upper connecting rod passes through the sealing seat and extends into the accommodating space. An air filling hole is provided on the upper connecting rod. The control valve is located at the upper end of the upper connecting rod.

7. The silent oil-source hydraulic system according to claim 2, characterized in that, The inner wall of the buffer tank is provided with a soft protective layer.

8. The silent oil-source hydraulic system according to claim 6, characterized in that, The lower surface of the second bonding component is an arc surface, and a nozzle is provided at the lower end of the upper connecting rod. The nozzle has a fine hole and is located inside the buffer airbag. The nozzle is connected to the air filling hole of the upper connecting rod.

9. The silent oil-source hydraulic system according to claim 1, characterized in that, The hydraulic tank is equipped with a level gauge.

10. The silent oil-source hydraulic system according to claim 1, characterized in that, The hydraulic tank is equipped with an anti-foaming device inside. The bottom of the hydraulic tank is equipped with a mounting base. The lower surface of the mounting base is equipped with a support component. The lower end of the support component is equipped with a soft pad. The soft pad is cylindrical in shape, and multiple annular grooves are formed on the outer surface of the soft pad.

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