Stable selector valve structure capable of achieving automatic switching

Abstract

The utility model discloses a stable automatic switching selector valve structure which comprises a valve body, a damping function frame, a first selector valve support and a second selector valve support, the damping function frame, the first selector valve support and the second selector valve support are arranged in the valve body, and the damping function frame is located between the first selector valve support and the second selector valve support. The damping function frame comprises a damping sleeve, a first valve is arranged at the left end of the damping sleeve, a first damping core is arranged in the first valve, a first spring is arranged between the first damping core and the first valve, a second valve is arranged at the right end of the damping sleeve, a second damping core is arranged in the second valve, and a second spring is arranged between the second damping core and the second valve. A damping cavity is formed in the middle of the damping sleeve, and damping holes communicating with the damping cavity are formed in the damping sleeve in the circumferential direction. According to opening and closing of different power sources, the valve at the high-pressure end is opened, the valve at the low-pressure end is correspondingly closed, automatic switching is achieved, and switching is relatively coherent and time-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of flight hydraulic system valves, and particularly relates to a stable and self-switchable selector valve structure. Background Technique

[0002] In a flight power system, generally, multiple power sources are required to provide power to a flight device in sequence to enable the flight device to obtain different accelerations; in the past, during the process of power source switching, it was necessary to start and switch by levels, resulting in phenomena such as slow switching and unsmooth power connection. In the power source switching of existing valves for flight devices, fluctuations would occur, causing a sense of jerk in the use of the aircraft; in view of the above existing problems, a stable and self-switchable selector valve structure is proposed. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a stable and self-switchable selector valve structure. According to the opening and closing of different power sources, the valve at the high-pressure end opens, and the valve at the low-pressure end closes accordingly, realizing self-switching, and the switching is relatively coherent and time-saving. At the same time of the opening, closing, and switching of the power source, the damping function frame, damping core one, and damping core two will greatly weaken the generated power impact, realizing the stable switching of multiple levels of power in the flight power system, and effectively solving the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A stable and self-switchable selector valve structure, including a valve body, a damping function frame, a selector valve support one, and a selector valve support two. The damping function frame, selector valve support one, and selector valve support two are arranged inside the valve body, and the damping function frame is located between the selector valve support one and the selector valve support two. The damping function frame includes a damping sleeve. A valve one is arranged at the left end of the damping sleeve, a damping core one is arranged inside the valve one, and a spring one is arranged between the damping core one and the valve one. A valve two is arranged at the right end of the damping sleeve, a damping core two is arranged inside the valve two, and a spring two is arranged between the damping core two and the valve two. A damping cavity is arranged in the middle of the damping sleeve, and damping holes communicating with the damping cavity are arranged in the circumferential direction of the damping sleeve.

[0005] Further, guiding frames are respectively arranged on the left and right sides of the outer surface of the damping sleeve. The right end of the selector valve support one abuts against the guiding frame on the left side, and the left end of the selector valve support two abuts against the guiding frame on the right side.

[0006] Further, the left end of the valve body is set as a left power source input port, the right end of the valve body is set as a right power source input port, and the lower end of the valve body is set as an output port, and the output port corresponds to the damping hole at the lower part of the damping function frame.

[0007] Further, an arc-shaped convex part is arranged at the center of the right end of the damping core one, and a concave part is arranged at the center of the left end of the damping core two, and the arc-shaped convex part is located in the concave part.

[0008] Further, a left end cover is fixed to the left end of the valve body by screws, and a protective ring and a sealing ring are arranged between the left end cover and the valve body.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] 1. According to the opening and closing of different power sources, the valve at the high-pressure end opens, and the valve at the low-pressure end closes accordingly, realizing autonomous switching. Moreover, the switching is relatively coherent and time-saving. While the power source is opening, closing, and switching, the damping function frame, the damping core one, and the damping core two will greatly weaken the generated power impact, realizing the smooth switching of multiple levels of power in the flight power system.

[0011] 2. An autonomous selection and smooth switching function is added to the selection valve with large power value fluctuations; the structure is simple, the autonomous switching is time-saving and stable, which can smooth the power value fluctuations, reduce the jerks during equipment use, and expand the application range of the selection valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the utility model;

[0013] Figure 2 is an enlarged schematic structural diagram of the valve of the utility model;

[0014] Figure 3 is a schematic diagram of the working state of the left power source of the utility model;

[0015] Figure 4 is a schematic diagram of the instantaneous state of switching between two power sources of the utility model;

[0016] Figure 5 is a schematic diagram of the working state of the right power source of the utility model.

[0017] In the figure: 1 left end cover, 2 screw, 3 protective ring, 4 sealing ring, 5 valve body, 6 selection valve support one, 7 damping function frame, 8 selection valve support two, 9 valve two, 10 spring two, 11 damping core two, 12 damping core one, 13 damping hole, 14 spring one, 15 valve one, 16 guide frame, 17 arc-shaped convex part, 18 concave part, 19 damping sleeve, 20 damping cavity, 21 left power source input port, 22 output port, 23 right power source input port. DETAILED DESCRIPTION OF THE INVENTION

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0019] Please refer to Figures 1-5 , the present utility model provides a technical solution: a stable and self-switchable selection valve structure, including a valve body 5, a damping function frame 7, a first selection valve bracket 6 and a second selection valve bracket 8. The damping function frame 7, the first selection valve bracket 6 and the second selection valve bracket 8 are arranged inside the valve body 5, and the damping function frame 7 is located between the first selection valve bracket 6 and the second selection valve bracket 8. The damping function frame 7 includes a damping sleeve 19. A first valve 15 is arranged at the left end of the damping sleeve 19. A first damping core 12 is arranged inside the first valve 15. A first spring 14 is arranged between the first damping core 12 and the first valve 15. Under the action of the elastic force of the first spring 14, the left end of the first valve 15 contacts the first selection valve bracket 6, realizing the closed state of the first valve 15. A second valve 9 is arranged at the right end of the damping sleeve 19. A second damping core 11 is arranged inside the second valve 9. A second spring 10 is arranged between the second damping core 11 and the second valve 9. Under the action of the elastic force of the second spring 10, the right end of the second valve 9 contacts the second selection valve bracket 8, realizing the closed state of the second valve 9. At this time, the whole selection valve is in the closed state. A damping cavity 20 is arranged in the middle of the damping sleeve 19. Damping holes 13 communicating with the damping cavity 20 are arranged in the circumferential direction of the damping sleeve 19. The designed damping function frame 7 enables the valve to have a damping function when it is opened. Due to the existence of the damping effect, the hydraulic pressure overcomes the spring force to smoothly open the valve.

[0020] Guide frames 16 are respectively arranged on the left side and the right side of the outer surface of the damping sleeve 19. The right end of the first selection valve bracket 6 abuts against the left guide frame 16, and the left end of the second selection valve bracket 8 abuts against the right guide frame 16. The first selection valve bracket 6 and the second selection valve bracket 8 fix the position of the damping function frame 7 in the valve body 5, prevent sliding, and ensure the structural stability.

[0021] The left end of the valve body 5 is set as the left power source input port 21, the right end of the valve body 5 is set as the right power source input port 23. The left power source input port 21 and the right power source input port 23 are different-level power source input ports. The lower end of the valve body 5 is set as the output port 22, and the output port 22 corresponds to the damping hole 13 at the lower part of the damping function frame 7.

[0022] An arc-shaped convex part 17 is provided at the center of the right end of the damping core one 12, and a concave part 18 is provided at the center of the left end of the damping core two 11. The arc-shaped convex part 17 is located in the concave part 18. The designed convex and concave matching structure can make the damping core one 12 and the damping core two 11 concentrically matched, and at the same time increase the space of the damping cavity 20.

[0023] A left end cover 1 is fixed to the left end of the valve body 5 by screws 2. A protective ring 3 and a sealing ring 4 are arranged between the left end cover 1 and the valve body 5. The sealing ring 4 plays a role in sealing the left end cover 1 to prevent leakage, and the protective ring 3 plays a role in protecting the sealing ring 4.

[0024] As atta Figure 1 ched, when both the left power source input port 21 and the right power source input port 23 are not opened, under the action of the spring, the valve one 15 and the valve two 9 are both in the closed state; at this time, it is in the closed state.

[0025] As atta Figure 3 ched, when the left power source input port 21 is started, at the same time, the damping function frame 7, the damping core two 11, and the damping core one 12 start to work; due to the existence of the damping effect, the hydraulic pressure overcomes the spring force to smoothly open the valve one 15.

[0026] As atta Figure 4 ched, when the right power source input port 23 is opened instantaneously, the left power source input port 21 and the right power source input port 23 will work simultaneously, and the damping effect will also be immediately reflected; at the same time, according to the different pressures at both ends, the selection structure will independently select the end with higher pressure to open smoothly, and the corresponding low-pressure end will close smoothly. While realizing multi-stage power switching in the power system, it also ensures the smooth fluctuation of the power value, reduces the jerks during equipment use. The selection structure can independently switch states according to the input pressures of different power sources; and multiple power sources share the same output port, and the switching is coherent and rapid.

[0027] As atta Figure 4 ched, at this time, the right power source input port 23 has been completely opened, and the valve one 15 of the left power source input port 21 has also been completely closed, realizing autonomous switching with a short switching interval.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention has various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A stable and autonomously switchable selector valve structure, comprising a valve body (5), a damping function frame (7), a selector valve bracket 1 (6) and a selector valve bracket 2 (8), characterized in that: The damping function frame (7), the first selector valve frame (6) and the second selector valve frame (8) are arranged inside the valve body (5), and the damping function frame (7) is located between the first selector valve frame (6) and the second selector valve frame (8). The damping function frame (7) comprises a damping sleeve (19). A valve first (15) is arranged at the left end of the damping sleeve (19). A damping core first (12) is arranged inside the valve first (15). A spring first (14) is arranged between the damping core first (12) and the valve first (15). A valve second (9) is arranged at the right end of the damping sleeve (19). A damping core second (11) is arranged inside the valve second (9). A spring second (10) is arranged between the damping core second (11) and the valve second (9). A damping chamber (20) is arranged in the middle of the damping sleeve (19). A damping hole (13) communicating with the damping chamber (20) is arranged in the circumferential direction of the damping sleeve (19).

2. A stable and autonomously switchable selector valve structure according to claim 1, characterized in that: Guide frames (16) are respectively arranged on the left and right sides of the outer surface of the damping sleeve (19); the right end of the first selector valve bracket (6) abuts against the left guide frame (16); and the left end of the second selector valve bracket (8) abuts against the right guide frame (16).

3. A smooth and autonomously switchable selector valve structure according to claim 1, characterized in that: The left end of the valve body (5) is arranged as a left power source input port (21), the right end of the valve body (5) is arranged as a right power source input port (23), and the lower end of the valve body (5) is arranged as an output port (22), and the output port (22) corresponds to the damping hole (13) at the lower part of the damping function frame (7).

4. A smooth and autonomously switchable selector valve structure according to claim 1, characterized in that: An arc-shaped protrusion (17) is arranged at the center of the right end of the damping core 1 (12), and a recess (18) is arranged at the center of the left end of the damping core 2 (11), wherein the arc-shaped protrusion (17) is located in the recess (18).

5. A smooth and autonomously switchable selector valve structure according to claim 1, characterized in that: A left end cover (1) is fixed to the left end of the valve body (5) by means of screws (2), and a protective ring (3) and a sealing ring (4) are provided between the left end cover (1) and the valve body (5).

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