Ground simulation anti-load mechanism and system
Through the voice coil motor and button driving piston movement, combined with the spring reset mechanism, the problem of difficult to achieve high overload pressure testing of the anti-load device under ground conditions is solved, and effective simulation and testing of the anti-load function is achieved.
Patent Information
- Application Number
- CN202422785955.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The existing load-resistant devices are difficult to achieve high overload pressure testing under ground conditions, resulting in the inability to effectively simulate the load-resistant function.
The voice coil motor and button are used to drive the piston movement, adjust the gas pressure by adjusting the cross-sectional area of the piston, and combine it with the spring return mechanism to achieve accurate control of the gas pressure.
It realizes high overload pressure testing of the anti-load device under ground conditions, meets the requirements of ground testing and ensures the normal use of the anti-load function.
Smart Images
Figure CN223272193U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of piston pressurization, and in particular to a ground simulation anti-load mechanism and system. Background Art
[0002] An anti-G device is used to improve a pilot's ability to withstand positive acceleration. When the aircraft experiences a positive G-load, the device's anti-G pressure regulator automatically injects a regulated pressure of gas into the suit based on the G-load value. This creates a certain surface pressure on the pilot's abdomen and legs, preventing blood from flowing to these areas and improving the body's tolerance to positive G-loads. Currently, all existing anti-G devices use a mechanical plunger-valve mechanism, which precisely controls the pressure under overload conditions through piston weight and feedback area, while also using a motor to assist in controlling the load.
[0003] However, under ground conditions without an overload environment, it is difficult to achieve high overload pressure testing relying solely on motors, which makes it difficult for ground simulated anti-load mechanisms to test the anti-load function of untested products, and it is impossible to know whether the products can be used normally. Utility Model Content
[0004] The purpose of the present application is to provide a ground simulation anti-load mechanism and system, which can utilize the dual effects of a voice coil motor and a button to drive the piston to move to increase the output pressure to meet the ground test requirements.
[0005] This application is implemented as follows:
[0006] The present application provides a ground simulation anti-gravity mechanism, which includes a shell with an adjustment chamber provided therein, the shell having an air inlet and an air outlet respectively connected to the adjustment chamber, an adjustment piston, a voice coil motor connected to the adjustment piston, and a first spring at both ends respectively pressing the adjustment piston and the shell, the voice coil motor being used to drive the adjustment piston to move along the adjustment chamber, and the first spring being used to drive the adjustment piston to move away from the voice coil motor to reset; when the adjustment piston moves, the cross-sectional area of the adjustment chamber is adjusted to adjust the pressure of the gas entering the air outlet through the air inlet, and the shell is further connected to an axially movable button, which is connected to the voice coil motor via a connecting mechanism, and the axial movement of the button drives the voice coil motor and the adjustment piston to move along the adjustment chamber via the connecting mechanism.
[0007] In some optional embodiments, the connecting mechanism includes a push block connected to the button, at least one connecting rod connected to the push block, a connecting frame with one end fixedly mounted on each connecting rod, and a push rod with one end connected to the other end of the connecting frame, the other end of the push rod slides through the shell and is connected to the voice coil motor, and a second spring is mounted on the push rod, and the second spring is used to drive the push rod moving axially to move in the opposite direction and reset.
[0008] In some optional embodiments, a pressing seat is further included, the button slides through the pressing seat and is connected to the push block, and a third spring is provided on the button, and the third spring is used to drive the button to move in the opposite direction and reset after moving axially.
[0009] In some optional implementation schemes, connecting rod seats corresponding to the connecting rods are further included, and each connecting rod is sleeved with a fourth spring with two ends respectively pressing against the corresponding connecting rod seat and the connecting frame.
[0010] In some optional embodiments, a pressure-dividing chamber is provided on the inner wall of the air outlet of the shell, a pressure-dividing piston that can move along the pressure-dividing chamber is provided in the pressure-dividing chamber, a limiting sleeve is also provided in the pressure-dividing chamber, the pressure-dividing piston is connected to a pressure-dividing piston rod that slides through the limiting sleeve, and a fifth spring is provided on the pressure-dividing piston rod, the two ends of which are respectively connected to the limiting sleeve and the pressure-dividing piston.
[0011] In some optional embodiments, a plurality of elastic buffer protrusions are provided on one end of the pressure-dividing piston away from the pressure-dividing piston rod.
[0012] In some optional embodiments, the inner wall of the regulating chamber is provided with at least one convex ring that seals with the regulating piston, and the outer wall of the regulating piston is provided with an annular groove extending along its circumference. When the regulating piston moves along the regulating chamber, the convex ring and the annular groove cooperate to adjust the cross-sectional area of the regulating chamber to adjust the gas pressure entering the air outlet through the air inlet.
[0013] The present application provides a ground simulation anti-G system, which includes the above-mentioned ground simulation anti-G mechanism.
[0014] The beneficial effects of the present application are as follows: the ground simulation anti-G mechanism provided by the present application includes a housing having an adjustment chamber therein, the housing having an air inlet and an air outlet respectively connected to the adjustment chamber, an adjustment piston, a voice coil motor connected to the adjustment piston, and a first spring at each end respectively pressing against the adjustment piston and the housing, the voice coil motor being used to drive the adjustment piston to move along the adjustment chamber, and the first spring being used to reset the adjustment piston when it moves away from the voice coil motor; the adjustment piston adjusts the cross-sectional area of the adjustment chamber as it moves to adjust the pressure of gas entering the outlet through the air inlet, and the housing is further connected to an axially movable button connected to the voice coil motor via a connecting mechanism, and the axial movement of the button drives the voice coil motor and the adjustment piston to move along the adjustment chamber through the connecting mechanism. The ground simulation anti-G mechanism provided by the present application can facilitate operators to use the button to drive the voice coil motor and the adjustment piston to move along the adjustment chamber to increase the output pressure of the outlet to meet ground test requirements, while using the voice coil motor to drive the piston to move along the adjustment chamber to adjust the cross-sectional area of the adjustment chamber to adjust the pressure of gas entering the outlet through the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 A partial perspective structural diagram of the ground simulation anti-G mechanism provided in an embodiment of the present application, omitting the button and the pressing seat;
[0017] Figure 2 A schematic structural diagram of a first usage state of a ground simulation anti-G mechanism provided in an embodiment of the present application;
[0018] Figure 3 A structural schematic diagram of the second usage state of the ground simulation anti-gravity mechanism provided in an embodiment of the present application.
[0019] In the figure: 100, shell; 110, regulating chamber; 120, air inlet; 121, air inlet chamber; 130, air outlet; 131, exhaust channel; 132, air outlet chamber; 140, regulating piston; 150, voice coil motor; 160, first spring; 170, convex ring; 180, ring groove; 200, button; 210, push block; 220, connecting rod; 230, connecting frame; 240, push rod; 250, second spring; 260, pressing seat; 270, third spring; 280, connecting rod seat; 290, fourth spring; 300, pressure-dividing chamber; 310, pressure-dividing piston; 320, limiting sleeve; 330, pressure-dividing piston rod; 340, fifth spring; 350, elastic buffer convex head. DETAILED DESCRIPTION
[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.
[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0025] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0026] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0027] The features and performance of the ground simulation anti-load mechanism of the present application are further described in detail below in conjunction with the embodiments.
[0028] like Figure 1 、 Figure 2 and Figure 3 As shown, the embodiment of the present application provides a ground simulation anti-gravity mechanism, which includes a shell 100 with an air inlet 120 and an air outlet 130 at the bottom and the top respectively, an adjusting chamber 110, an air outlet chamber 132 and an air inlet chamber 121 arranged at intervals up and down and arranged on one side of the adjusting chamber 110, and an exhaust channel 131 connecting the air outlet 130 and the air outlet chamber 132, the air inlet 120 and the air inlet chamber 121 are connected, the adjusting chamber 110 is connected with the air outlet chamber 132 and the air inlet chamber 121 respectively, and a regulating piston 140 that can be raised and lowered, a voice coil motor 150 connected to the regulating piston 140 and a third piston 150 with two ends respectively pressing against the regulating piston 140 and the inner wall of the regulating chamber 110. A spring 160 is provided. The magnet of the voice coil motor 150 is connected to the regulating piston 140 to drive the regulating piston 140 to rise and fall along the regulating chamber 110. The first spring 160 is used to reset the regulating piston 140 that moves away from the voice coil motor 150. The inner wall of the regulating chamber 110 is provided with two raised rings 170 spaced apart from each other and sealingly engaged with the regulating piston 140. The outer wall of the regulating piston 140 is provided with an annular groove 180 extending along its circumference. The top and bottom surfaces of the annular groove 180 are inclined surfaces. When the regulating piston 140 moves along the regulating chamber 110, the raised rings 170 and the annular groove 180 cooperate to adjust the cross-sectional area of the regulating chamber 110 to adjust the gas pressure entering the gas outlet 130 through the gas inlet 120.
[0029] A pressing seat 260 is provided on the top of the housing 100, and a liftable button 200 is connected to the pressing seat 260. The button 200 is connected to the voice coil motor 150 through a connecting mechanism. When the button 200 is lifted and lowered in the axial direction, the voice coil motor 150 and the regulating piston 140 are driven to lift and lower along the regulating chamber 110 through the connecting mechanism. The connecting mechanism includes a push block 210, two connecting rods 220 connected to the push blocks 210 at the top, a connecting frame 230 with one end fixedly sleeved on the two connecting rods 220, and a top rod 240 with one end connected to the other end of the connecting frame 230. The button 200 The bottom of the push rod 200 slides through the pressing seat 260 and then connects to the push block 210. The button 200 is equipped with a third spring 270 with two ends respectively pressing against the button 200 and the pressing seat 260. The third spring 270 is used to drive the button 200 to move in the opposite direction and reset after axial movement. The other end of the push rod 240 slides through the housing 100 and connects to the voice coil motor 150. The push rod 240 is equipped with a second spring 250 with two ends respectively pressing against the push rod 240 and the housing 100. The second spring 250 is used to drive the push rod 240 to move in the opposite direction and reset after axial movement. The bottom of the connecting rod 220 is equipped with a corresponding connecting rod seat 280. Each connecting rod 220 is equipped with a fourth spring 290 with two ends respectively pressing against the corresponding connecting rod seat 280 and the connecting frame 230.
[0030] A pressure-dividing chamber 300 is provided on the inner wall of the air outlet 130 of the shell 100, and a pressure-dividing piston 310 that can move along the pressure and horizontal directions is provided in the pressure-dividing chamber 300. A limiting sleeve 320 is also provided in the pressure-dividing chamber 300. The pressure-dividing piston 310 is connected to a pressure-dividing piston rod 330 that slides through the limiting sleeve 320. The pressure-dividing piston rod 330 is provided with a fifth spring 340 whose two ends are respectively connected to the limiting sleeve 320 and the pressure-dividing piston 310. The end of the pressure-dividing piston 310 away from the pressure-dividing piston rod 330 is provided with eight elastic buffer protrusions 350 arranged at intervals along the circumference.
[0031] When using the ground simulation anti-G mechanism provided in the embodiment of the present application, the air inlet 120 at the bottom of the shell 100 is connected to the air source, and the air outlet 130 at the top of the shell 100 is connected to the anti-G pants. In the initial state, Figure 2 As shown, the button 200 is not pressed, and the regulating piston 140 is located at the top of the regulating chamber 110. At this time, the outer wall of the regulating piston 140 and the two convex rings 170 on the inner wall of the regulating chamber 110 are sealed together to isolate the air outlet chamber 132 and the air inlet chamber 121. The gas from the air source entering the air inlet 120 cannot enter the air outlet 130 through the regulating chamber 110 and enter the anti-G pants, which does not affect the normal operation of the anti-G pants.
[0032] When a small overload pressurization test is required, the voice coil motor 150 is controlled to drive the regulating piston 140 to descend along the regulating chamber 110 and compress the first spring 160, so that the annular groove 180 on the outer wall of the regulating piston 140 moves to the convex ring 170 on the inner wall of the regulating chamber 110, thereby connecting the air outlet chamber 132 and the air inlet chamber 121 through the gap between the annular groove 180 and the convex ring 170, so that the gas from the air source entering the air inlet 120 enters the air outlet 130 through the regulating chamber 110 and enters the anti-G pants to establish a certain pressure. However, since the upper surface area of the annular groove 180 of the regulating piston 140 is larger than the lower surface area and the elastic force of the first spring 160, when the pressure in the anti-G pants is greater than 40 kPa, the thrust of the voice coil motor 150 is insufficient to continue to push the regulating piston 140 downward to increase the pressure;
[0033] When a large overload pressure test is required, such as Figure 3As shown, an external driving mechanism is used to push the button 200 to descend along the pressing seat 260 to compress the third spring 270, so that when the button 200 descends, it pushes the push block 210 to descend. When the push block 210 descends, it drives the two connecting rods 220 to descend, compresses the fourth spring 290 and drives the connecting frame 230 fixed on the two connecting rods 220 to descend. When the connecting frame 230 descends, it drives the push rod 240 to descend, compresses the second spring 250 and drives the voice coil motor 150 and the regulating piston 140 to further descend along the regulating chamber 110, so that the gap between the air outlet chamber 132 and the air inlet chamber 121 connected through the annular groove 180 and the convex ring 170 becomes larger, thereby increasing the pressure entering the air outlet 130 through the air inlet 120 and the regulating chamber 110 and entering the anti-G pants, so that the anti-G pants can establish a higher pressure to meet the requirements of ground testing.
[0034] When the large overload pressurization test is stopped, the external driving mechanism is stopped from being used to push the button 200 down along the pressing seat 260, so that the compressed second spring 250, third spring 270 and fourth spring 290 respectively push the push rod 240, button 200 and two connecting rods 220 to rise and reset to their original positions.
[0035] A pressure-dividing chamber 300 is provided on the inner wall of the air outlet 130 of the shell 100. When the pressure entering the air outlet 130 through the air inlet 120 and the regulating chamber 110 and entering the anti-load pants increases, the pressure pushes the pressure-dividing piston 310 in the pressure-dividing chamber 300 to move and compress the fifth spring 340, and an elastic buffer protrusion 350 is provided on one end of the pressure-dividing piston 310 away from the pressure-dividing piston rod 330 to press against the inner wall of the pressure-dividing chamber 300 for buffering, thereby avoiding damage to the equipment caused by excessive pressure in the shell 100.
[0036] The present application provides a ground simulation anti-G system, which includes the above-mentioned ground simulation anti-G mechanism and an air source connected to the air inlet 120.
[0037] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
Claims
1. A ground simulation anti-gravity mechanism, comprising a shell with an adjustment chamber provided therein, the shell having an air inlet and an air outlet respectively connected to the adjustment chamber, an adjustment piston, a voice coil motor connected to the adjustment piston, and a first spring at both ends respectively pressing against the adjustment piston and the shell, the voice coil motor being used to drive the adjustment piston to move along the adjustment chamber, the first spring being used to drive the adjustment piston to return to its original position when moving away from the voice coil motor; the adjustment piston adjusts the cross-sectional area of the adjustment chamber when moving to adjust the pressure of the gas entering the air outlet through the air inlet, characterized in that: The housing is further connected to a button that can move in the axial direction. The button is connected to the voice coil motor through a connecting mechanism. The button moves in the axial direction and drives the voice coil motor and the regulating piston to move along the regulating cavity through the connecting mechanism.
2. The ground simulation anti-G mechanism according to claim 1, characterized in that: The connecting mechanism includes a push block connected to the button, at least one connecting rod connected to the push block, a connecting frame with one end fixedly mounted on each connecting rod, and a push rod with one end connected to the other end of the connecting frame. The other end of the push rod slides through the shell and is connected to the voice coil motor. A second spring is mounted on the push rod, and the second spring is used to drive the push rod moving axially to move in the opposite direction and reset.
3. The ground simulation anti-G mechanism according to claim 2, characterized in that: It also includes a pressing seat, the button slides through the pressing seat and is connected to the push block, and a third spring is sleeved on the button, and the third spring is used to drive the button to move in the opposite direction and reset after moving in the axial direction.
4. The ground simulation anti-G mechanism according to claim 2, characterized in that: It also includes connecting rod seats corresponding to the connecting rods one by one, and each connecting rod is sleeved with a fourth spring with two ends respectively pressing against the corresponding connecting rod seat and the connecting frame.
5. The ground simulation anti-G mechanism according to claim 1, characterized in that: A pressure-dividing chamber is provided on the inner wall of the air outlet of the shell, a pressure-dividing piston that can move along the pressure-dividing chamber is provided in the pressure-dividing chamber, a limiting sleeve is also provided in the pressure-dividing chamber, the pressure-dividing piston is connected to a pressure-dividing piston rod that slides through the limiting sleeve, and a fifth spring is sleeved on the pressure-dividing piston rod, whose two ends are respectively connected to the limiting sleeve and the pressure-dividing piston.
6. The ground simulation anti-G mechanism according to claim 5, characterized in that: A plurality of elastic buffer protrusions are provided on one end of the pressure dividing piston away from the pressure dividing piston rod.
7. The ground simulation anti-G mechanism according to claim 1, characterized in that: The inner wall of the regulating chamber is provided with at least one convex ring that seals with the regulating piston, and the outer wall of the regulating piston is provided with an annular groove extending along its circumference. When the regulating piston moves along the regulating chamber, the convex ring and the annular groove cooperate to adjust the cross-sectional area of the regulating chamber to adjust the gas pressure entering the gas outlet through the air inlet.
8. A ground simulation anti-G system, characterized in that: It comprises the ground simulation anti-G mechanism according to any one of claims 1 to 7.