Liquid anti-G experiment device for large and medium-sized animals and its operation method

Abstract

The present invention discloses a liquid anti-G experiment device for large and medium-sized animals, comprising: a housing with an accommodation cavity therein, and one end of the housing is provided with a first opening through which the large and medium-sized animals can be placed in the accommodation cavity; a first fixing member for fixing the housing to a centrifugal device; a soft waterproof member having a contraction end and an expansion end, and the soft waterproof member is a hollow through structure in an extended state, wherein the contraction end can be sleeved on the neck or chest of the large and medium-sized animals, and the expansion end can be sleeved on the first opening of the housing; a cover plate that can be detachably connected to the housing, the cover plate can cover the first opening, and a second opening is provided on the cover plate, and the second opening can be sleeved on the neck or chest of the large and medium-sized animals. The present invention can conduct multiple anti-G experiments on large and medium-sized animals, verify the anti-G effect of the liquid to the greatest extent, and reduce the possibility of damage to the experimental device. The present invention also provides an operation method for the liquid anti-G experiment device.

Description

Technical Field

[0001] The present invention relates to the field of experimental devices, and particularly to a liquid anti-G suit experimental device for large and medium-sized animals and an operation method thereof. Background Art

[0002] During aerospace activities, pilots and astronauts are subjected to strong acceleration forces. When they are subjected to acceleration from head to foot, blood will concentrate in the feet, causing ischemia in some important organs in the head (such as the brain, eyes, etc.), resulting in loss of consciousness or visual ability.

[0003] To solve the above problems, currently, a method of wrapping a layer of inflatable anti-G suit around the limbs and torso is adopted, and a certain pressure is applied to the body to reduce the degree of blood concentration in the feet. Although using an inflatable anti-G suit can alleviate the problem of head ischemia to a certain extent, this method has the following main problems: (1) There is a lag in the generation of anti-G pressure; (2) It is not easy to control the magnitude of the anti-G pressure; (3) The matching degree between the anti-G pressure and the acceleration is poor.

[0004] Water is a good pressure container. If a liquid-filled anti-G suit can be adopted, the problems generated by the above-mentioned inflatable anti-G suit can be better solved. Before designing a human liquid-filled anti-G suit, it is first necessary to conduct experimental verification on animals. In order to simulate the human experimental environment as much as possible to obtain more accurate experimental results, large and medium-sized animals are generally used for experiments, and there is no liquid anti-G suit experimental device on the market that can repeat experiments and is suitable for large and medium-sized animals. Summary of the Invention

[0005] The purpose of the present invention is to provide a liquid anti-G suit experimental device that can repeat experiments and is suitable for large and medium-sized animals.

[0006] An embodiment of the present invention discloses a liquid anti-G suit experimental device for large and medium-sized animals, including: a housing provided with an accommodation cavity therein, one end of the housing is provided with a first opening, and a large and medium-sized animal can be placed in the accommodation cavity through the first opening; a first fixing member for fixing the housing to a centrifugal device; a soft waterproof member having a contraction end and an expansion end, and the soft waterproof member is a hollow through structure in an extended state, wherein the contraction end can be sleeved on the neck or chest of the large and medium-sized animal, and the expansion end can be sleeved on the first opening of the housing; a cover plate that can be detachably connected to the housing, the cover plate can cover the first opening, and a second opening is provided on the cover plate, and the second opening can be sleeved on the neck or chest of the large and medium-sized animal.

[0007] By adopting the above technical solution, different large and medium-sized animals within a certain size range can be directly immersed in a liquid (such as water), and the limbs of the large and medium-sized animals can be comprehensively wrapped by virtue of the characteristics of the liquid, so as to conduct multiple anti-G experiments to obtain experimental data (such as physiological parameters such as heart rate and blood pressure) of the large and medium-sized animals under different centrifugal conditions and different liquid filling conditions (such as the liquid fully filling or partially filling the accommodating cavity, or the accommodating cavity having no liquid), verify the anti-G effect of the liquid to the greatest extent possible, provide necessary verification for the development of a human liquid-filled anti-G suit, and at the same time prevent the liquid in the accommodating cavity from overflowing during the experiment and reduce the possibility of damage to the experimental device.

[0008] According to another specific embodiment of the present invention, the cover plate includes an upper cover plate and a lower cover plate. The upper cover plate is detachably fixed to the lower cover plate through a first connection assembly, and the lower cover plate is detachably fixed to the housing through a second connection assembly. The second opening includes an adjustable opening and a non-adjustable opening. The adjustable opening is provided on the upper cover plate, and the non-adjustable opening is provided on the lower cover plate.

[0009] According to another specific embodiment of the present invention, when the adjustable opening is adjusted to the smallest opening, the adjustable opening is smaller than the non-adjustable opening.

[0010] According to another specific embodiment of the present invention, the first connection assembly includes the same number of upper through holes, lower through holes, bolts and screw knobs. The upper through holes are provided on the upper cover plate, and the lower through holes are provided on the lower cover plate. After the bolts respectively pass through the upper through holes and the lower through holes, the screw knobs are tightened to fix the upper cover plate and the lower cover plate.

[0011] According to another specific embodiment of the present invention, the upper cover plate includes two semi-circular cover plates, and the two semi-circular cover plates can move towards or away from each other in a first direction to make the adjustable opening larger or smaller.

[0012] According to another specific embodiment of the present invention, the number of the upper through holes is an even number and can extend in the first direction. The upper through holes are symmetrically arranged on the semi-circular cover plate, and the bolts can move in the upper through holes in the first direction.

[0013] According to another specific embodiment of the present invention, the number of the upper through holes is 4. The upper through holes are sequentially connected to form a square, and the lower through holes are sequentially connected to form a square. By tightening the screw knobs, the bolts are clamped to the outer side wall of the housing.

[0014] According to another specific embodiment of the present invention, the first fixing member includes an L-shaped plate. The L-shaped plate includes a horizontal plate and a vertical plate perpendicular to the horizontal plate. The horizontal plate is fixed to the bottom surface of the housing, and a first through hole matched with the centrifugal device is provided on the vertical plate, and the housing can be fixed to the centrifugal device through the first through hole.

[0015] According to another specific embodiment of the present invention, it further includes a number of pads adapted to the size of the housing. By adjusting the number of pads placed in the housing, the force exerted by the neck or chest of large and medium-sized animals on the cover plate can be reduced.

[0016] According to another specific embodiment of the present invention, the pad is provided with a groove, and a movable handle is arranged in the groove. The movable handle can extend out of the pad to be held by the operator or retract into the groove of the pad.

[0017] According to another specific embodiment of the present invention, it further includes a second fixing member. A second through hole is provided on the vertical plate, and the second fixing member can pass through the second through hole to strengthen the firmness between the housing and the L-shaped plate.

[0018] According to another specific embodiment of the present invention, it further includes a third fixing member. After the expansion end of the soft waterproof member is sleeved on the first opening of the housing, a part of the expansion end can be closely attached to the outer side wall of the housing through the third fixing member.

[0019] According to another specific embodiment of the present invention, it further includes a fourth fixing member. The fourth fixing member is flexible and is used to strengthen the fit between the contraction end of the soft waterproof member and the neck or chest of large and medium-sized animals.

[0020] The present application also discloses an operation method of the liquid anti-G suit experimental device according to any one of the above specific embodiments, including the following steps: measuring the distance from the neck or chest of large and medium-sized animals to the coccyx;

[0021] According to the measured distance, calculate the number of pads that need to be placed in the housing and place the corresponding number of pads;

[0022] The contraction end of the soft waterproof member is sleeved on the neck or chest of large and medium-sized animals, the expansion end of the soft waterproof member is sleeved on the first opening of the housing, and the large and medium-sized animals are located in the accommodation cavity;

[0023] Use the third fixing member to closely attach a part of the expansion end to the outer side wall of the housing;

[0024] Pull open the contraction end of the soft waterproof member and pour liquid into the accommodation cavity to raise the liquid level in the housing to be close to the first opening of the housing;

[0025] Use the fourth fixing member to strengthen the fit between the contraction end of the soft waterproof member and the neck or chest of large and medium-sized animals;

[0026] Loosen the knob of the upper cover plate so that the two semi-circular cover plates of the upper cover plate move towards each other in the first direction, and adjust the adjustable opening to the size of the first adapted opening. The size of the first adapted opening is at least large enough to cover from the head of large and medium-sized animals to the neck or chest;

[0027] Put the adjusted cover plate on the neck or chest of large and medium-sized animals, and fix the lower cover plate to the housing through the second connecting component;

[0028] Make the two semi-circular cover plates of the upper cover plate move relative to each other in the first direction, adjust the adjustable opening to the size of the second adapted opening, and the size of the second adapted opening is the size adapted to the neck or chest of large and medium-sized animals;

[0029] Tighten the screw knob to fix the upper cover plate and the lower cover plate. Description of the Drawings

[0030] Figure 1 Show a partial schematic diagram of the liquid anti-G experiment device according to an embodiment of the present invention when no large and medium-sized animals are placed;

[0031] Figure 2 Show a partial schematic diagram of the liquid anti-G experiment device according to an embodiment of the present invention when large and medium-sized animals are placed;

[0032] Figure 3 Show a top view of the liquid anti-G experiment device according to an embodiment of the present invention when a backing plate is placed;

[0033] Figure 4 Show a top view of the backing plate according to an embodiment of the present invention;

[0034] Figure 5 Show a schematic diagram of the fourth fixing member according to an embodiment of the present invention. Detailed Embodiments

[0035] The following specific embodiments illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0036] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0038] The terms "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "connected to" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the drawings.

[0041] Please refer to Figure 1 and Figure 2 , this application provides a liquid anti-G experiment device 1 for large and medium-sized animals, including: a housing 10 with an accommodation cavity 11 provided therein. One end of the housing 10 is provided with a first opening 111, through which a large and medium-sized animal 2 (such as Figure 2 the pig shown) can be placed in the accommodation cavity 11. And, liquid (such as water) can be injected into the accommodation cavity 11 so that the large and medium-sized animal 2 placed in the accommodation cavity 11 is immersed in the liquid, thereby being able to simulate the environment where the human body is covered by liquid. It should be noted that the "large and medium-sized animal 2" in this application, in addition to Figure 2 the pig shown, can also be monkeys, dogs, etc.

[0042] This liquid anti-G experiment device 1 further includes: a first fixing member 20 for fixing the housing 10 to an external centrifugal device (not shown in the figure). Thus, repeated experiments can be carried out to obtain the experimental data (such as physiological parameters such as heart rate and blood pressure) of the large and medium-sized animal 2 under different centrifugal conditions and different liquid filling conditions (such as the accommodation cavity 11 being fully filled or partially filled with liquid, or the accommodation cavity 11 having no liquid), providing very necessary verification for the development of a human liquid-filled anti-G suit.

[0043] Please refer to Figure 2, the liquid anti-G experiment device 1 further includes: a soft waterproof member 30, having a contraction end 31 and an expansion end 32, and in the extended state, the soft waterproof member 30 is a hollow through structure. Among them, the contraction end 31 can be sleeved on the neck or chest of the large and medium-sized animal 2, and the expansion end 32 can be sleeved on the first opening 111 of the housing 10. It should be noted that the "extended state" can be understood as the surface of the soft waterproof member 30 being flat and without wrinkles. In other words, the soft waterproof member 30 is in a trumpet shape in the extended state, the "contraction end 31" is the end with a smaller trumpet opening, and the "expansion end 32" is the end with a larger trumpet opening. However, it should also be noted that the transition between the contraction end 31 and the expansion end 32 can be a planar transition or a non-planar transition (for example, it can be curved).

[0044] The liquid anti-G experiment device 1 further includes: a cover plate 40, which can be detachably connected to the housing 10, the cover plate 40 can cover the first opening 111, and the cover plate 40 is provided with a second opening, and the second opening can be sleeved on the neck or chest of the large and medium-sized animal 2.

[0045] Using the above liquid anti-G experiment device 1 may include the following steps:

[0046] (1) Remove the cover plate 42, that is, separate the cover plate 40 from the housing 10;

[0047] (2) Sleeve the expansion end 32 of the soft waterproof member 30 on the first opening 111 of the housing 10;

[0048] (3) Sleeve the contraction end 31 of the soft waterproof member 30 on the neck or chest of the large and medium-sized animal 2 to be experimented (hereinafter referred to as "experimental animal 2"), and place the experimental animal 2 in the accommodation cavity 11;

[0049] (4) Inject liquid (such as water) into the accommodation cavity 11 through the contraction end 31;

[0050] (5) Install the cover plate 40 on the housing 10;

[0051] (6) Fix the liquid anti-G experiment device 1 to an external centrifugal device through the first fixing member 20 for subsequent anti-G experiments.

[0052] It should be noted that, without conflict, the order of the above steps can be adjusted. For example, the order between (2) and (3) can be swapped, that is, the contraction end 31 of the soft waterproof member 30 can be sleeved on the neck or chest of the experimental animal 2 first; then the experimental animal 2 sleeved with the soft waterproof member 30 is placed in the accommodation cavity 11, and the expansion end 32 of the soft waterproof member 30 is sleeved on the first opening 111 of the housing 10.

[0053] By using the liquid anti-G suit experiment device 1 of the present application, different large and medium-sized animals 2 within a certain size range can be directly immersed in a liquid (such as water). With the characteristics of the liquid, the limbs of the large and medium-sized animals 2 can be fully wrapped, so as to conduct multiple anti-G suit experiments to obtain the experimental data (such as physiological parameters such as heart rate and blood pressure) of the large and medium-sized animals 2 under different centrifugation conditions and different liquid filling conditions (such as the liquid completely filling or partially filling the accommodation chamber 11, or the accommodation chamber 11 having no liquid), so as to verify the anti-G suit effect of the liquid to the greatest extent, provide necessary verification for the development of a human liquid-filled anti-G suit, and at the same time prevent the liquid in the accommodation chamber 11 from overflowing during the experiment and reduce the possibility of damage to the experimental device.

[0054] In this embodiment, referring to Figure 1 and Figure 2 , the housing 10 is in the shape of a round barrel, which can reduce the extra space of the accommodation chamber 11 when accommodating the experimental animal 2. In other embodiments, the housing 10 can also be non-round barrel-shaped. For example, the longitudinal section of the housing 10 can be quasi-elliptical, which can better fit the outer contour of the experimental animal 2 to reduce the extra space. The housing 10 can also be square, which is not specifically limited here, as long as it can accommodate the experimental animal 2 and can be fixed to the centrifugal device through the first connecting fastener.

[0055] In some possible embodiments, the soft waterproof member 30 has elasticity. After its contraction end 31 is sleeved on the neck or chest of the large and medium-sized animal 2, it can fit with the neck or chest, and / or, after its expansion end 32 is sleeved on the first opening 111 of the housing 10, it can fit with the outer side wall of the housing 10, further preventing the liquid in the accommodation chamber 11 from overflowing, thereby increasing the service life of the experimental device.

[0056] In some other possible embodiments, the soft waterproof member 30 may not have elasticity. The expansion end 32 of the soft waterproof member 30 can be closely attached to the outer shell of the housing 10 through the third fixing member 70 and the fourth fixing member 80 (as shown in Figure 5 ), and the contraction end 31 of the soft waterproof member 30 can be attached to the neck or chest of the experimental animal 2, so that the liquid in the accommodation chamber 11 is not likely to overflow during the experiment. It should be noted that when the contraction end 31 of the soft waterproof member 30 is attached to the neck or chest of the experimental animal 2, it cannot be too tight to enable the experimental animal 2 to breathe normally, and at the same time it cannot be too loose to ensure that the liquid in the accommodation chamber 11 is not likely to overflow.

[0057] In this embodiment, the soft waterproof member 30 is made of elastic soft rubber. The opening of the contraction end 31 of the soft waterproof member 30 is smaller than the neck or chest of the experimental animal 2. After the contraction end 31 of the soft waterproof member 30 is sleeved on the neck or chest of the experimental animal 2, the soft waterproof member 30 can be attached to the neck or chest of the animal by its own elasticity (that is), and then through the fourth fixing member 80, the degree of attachment between the contraction end 31 and the neck or chest of the experimental animal 2 can be further strengthened, and liquid leakage can be more effectively prevented. In this embodiment, as Figure 5 shown, the fourth fixing member 80 is a self-adhesive tape.

[0058] The opening of the expansion end 32 of the soft waterproof member 30 is equal to or larger than the first opening 111. After the expansion end 32 of the soft waterproof member 30 is sleeved on the first opening 111 of the housing 10, through the third fixing member 70, the expansion end 32 is attached to the outer side wall of the housing 10, effectively preventing liquid from overflowing. In other embodiments, the opening of the expansion end 32 of the soft waterproof member 30 can also be smaller than the first opening 111. After the expansion end 32 of the soft waterproof member 30 is sleeved on the first opening 111 of the housing 10, the soft waterproof member 30 can be attached to the outer side wall of the housing 10 by its own elasticity, and then through the third fixing member 70, the degree of attachment between the expansion end 32 and the outer side wall of the housing 10 can be further strengthened, and liquid leakage can be more effectively prevented. In this embodiment, the third fixing member 70 is a clamp.

[0059] In other embodiments, the soft waterproof member 30 can also be made of materials other than soft rubber, as long as it can play a waterproof role. The third fixing member 70 can also be other fixing structures other than a clamp, as long as it can achieve the attachment between the expansion end 32 of the soft waterproof member 30 and the outer shell of the housing 10, so that the liquid in the accommodation cavity 11 is not likely to overflow. The fourth fixing member 80 can also be other flexible fixing structures other than a self-adhesive tape, as long as it can achieve the attachment between the contraction end 31 of the soft waterproof member 30 and the neck or chest of the experimental animal 2, so that the liquid in the accommodation cavity 11 is not likely to overflow.

[0060] In some possible embodiments, refer to Figure 1 , the cover plate 40 includes an upper cover plate 41 and a lower cover plate 42. The upper cover plate 41 is detachably fixed to the lower cover plate 42 through the first connection assembly 44, and the lower cover plate 42 is detachably fixed to the housing 10 through a second connection assembly (not shown in the figure).

[0061] In some possible embodiments, refer to Figure 3 and in combination with Figure 1, the first connection component 44 includes the same number of upper through-holes 441, lower through-holes (not shown in the figure), bolts (not shown in the figure), and screw buttons 442. The upper through-holes 441 are provided on the upper cover plate 41, and the lower through-holes are provided on the lower cover plate 42. After the bolts pass through the upper through-holes 441 and the lower through-holes respectively, the screw buttons 442 are tightened to fix the upper cover plate 41 and the lower cover plate 42. The second opening includes an adjustable opening 412 and a non-adjustable opening 412. The adjustable opening 412 is provided on the upper cover plate 41, and the non-adjustable opening 412 (not shown in the figure) is provided on the lower cover plate 42. The second connection component can be a snap component or other connection components that are convenient for installation and disassembly, which is not limited herein.

[0062] In some possible embodiments, referring to Figure 3 , the upper cover plate 41 includes two semi-circular cover plates 411, and the lower cover plate 42 is circular. The two semi-circular cover plates 411 can move towards or away from each other along the first direction (such as the X direction shown in Figure 3 ), so that the adjustable opening 412 becomes larger or smaller, so as to be adjusted according to the size range of different experimental animals 2, and the applicable range of the liquid anti-G experiment device 1 is improved.

[0063] In some possible embodiments, when the adjustable opening 412 is adjusted to the smallest opening, that is, when the two semi-circular cover plates 411 move towards each other along the first direction (such as the X direction shown in Figure 3 ), the adjustable opening 412 is smaller than the non-adjustable opening 412 when they are in contact. The greater the difference between the minimum opening of the adjustable opening 412 and the non-adjustable opening 412, the greater the adjustable range of the adjustable opening 412. However, it should be noted that the minimum opening of the adjustable opening 412 cannot be too small, otherwise it cannot be sleeved on the neck or chest of the experimental animal 2, and the maximum opening of the adjustable opening 412 cannot be too large due to the limitation of the size of the cover plate 40.

[0064] In some possible embodiments, referring to Figure 3 , the number of the upper through-holes 441 is even. In this embodiment, the number of the upper through-holes 441 is 4 (that is, the number of the lower through-holes, bolts, and screw buttons 442 is also 4 each). The upper through-holes 441 can extend along the first direction (such as the X direction shown in Figure 3 ), and are symmetrically arranged on the semi-circular cover plate 40 (that is, 4 upper through-holes 441 are symmetrically arranged on two semi-circular cover plates 40), and the bolts can move along the first direction (such as the X direction shown in Figure 3 ) within the upper through-holes 441.

[0065] In some possible embodiments, 4 along the first direction (such as Figure 3The upper through holes 441 extending in the X direction (shown in [reference]) are sequentially connected to form a square, and the four lower through holes are sequentially connected to form a square. By tightening the screw knob 442, the bolt is clamped to the outer side wall of the housing 10. In other words, the square formed by the sequential connection of the lower through holes is similar to the inscribed square of the first opening 111, but the four vertices are not located inside the first opening 111 but outside the first opening 111. By tightening the screw knob 442, the bolt can be clamped to the outer side wall of the housing 10. In this way, the firmness between the cover plate 40 and the housing 10 can be further enhanced, preventing the cover plate 40 from slipping off.

[0066] In some possible embodiments, referring to Figure 1 and Figure 2 , the first fixing member 20 includes an L-shaped plate, and the L-shaped plate includes a horizontal plate 21 and a vertical plate 22 perpendicular to the horizontal plate 21. Among them, the horizontal plate 21 is fixed to the bottom surface of the housing 10. In this embodiment, the horizontal plate 21 is fixed to the bottom surface of the housing 10 by welding. In other embodiments, it can also be other non-detachable connection methods or detachable connection methods, which are not limited herein. A first through hole (not shown in the figure) matching the centrifugal device is provided on the vertical plate 22, and the housing 10 can be fixed to the centrifugal device through the first through hole (for example, fixed by a threaded connection method). In this embodiment, the L-shaped plate is made of a stainless steel plate, and those skilled in the art can calculate according to the stress situation of the anti-g load experiment to determine the material grade and thickness, which are not specifically limited herein.

[0067] In some possible embodiments, on the outer side wall of the housing 10 near the first opening 111, non-movable handles 12 are symmetrically provided with respect to the second direction (such as Figure 1 the Y direction shown in [reference]) to facilitate the handling of the entire liquid anti-g load experiment device 1. In this embodiment, the non-movable handles 12 are provided at a position 3 to 4 centimeters away from the first opening 111. The length of the horizontal plate 21 in the second direction (such as Figure 1 the Y direction shown in [reference]) is equal to the bottom diameter of the housing 10. The length of the vertical surface in the third direction (such as Figure 1 the Z direction shown in [reference]) is equal to the distance from the bottom surface of the housing 10 to the lower edge of the non-movable handle 12, and the height of the vertical surface is maximized as much as possible to improve the firmness between the liquid anti-g load experiment device 1 and the centrifugal device. The length of the vertical surface in the first direction (such as Figure 1 the Y direction shown in [reference]) is slightly longer than the bottom diameter of the housing 10. It should be noted that the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0068] In some possible embodiments, the liquid anti-G experiment device 1 further includes a second fixing member 60. A second through hole 221 is provided on the vertical plate 22. The second fixing member 60 can pass through the second through hole 221 to strengthen the firmness between the housing 10 and the L-shaped plate. In this embodiment, the second fixing member 60 may be a clamp. In other embodiments, the second fixing member 60 may also be other fixing structures, as long as the firmness between the housing 10 and the L-shaped plate can be strengthened.

[0069] In some possible embodiments, referring to Figure 4 , the liquid anti-G experiment device 1 further includes a plurality of pads 50 adapted to the size of the housing 10 (for example, the diameter of the pad 50 is slightly smaller than the inner diameter of the housing 10). By adjusting the number of pads 50 placed in the housing 10, the force exerted by the neck or chest of the experimental animal 2 on the cover plate 40 can be reduced. In other words, according to the different body lengths of the experimental animal 2, the number of pads 50 placed in the housing 10 is adjusted so that the buttocks of the experimental animal 2 can fully or partially act on the pads 50, thereby reducing the force exerted by the neck or chest of the experimental animal 2 on the cover plate 40. The pads 50 can be made of materials such as hard plastic or plexiglass plate, and are not specifically limited herein, as long as their specific gravity is greater than the liquid (such as water) to be injected into the accommodation cavity 11, and they can sink to the bottom of the accommodation cavity 11 when the accommodation cavity 11 is filled with liquid.

[0070] In some possible embodiments, the pad 50 is provided with a groove 51, and a movable handle 52 is provided in the groove 51. The movable handle 52 can extend out of the pad 50 to be held by the operator, or retract into the groove 51 of the pad 50. In other words, when it is necessary to take out the pad 50 from the bottom of the housing 10, the operator can pull out the movable handle 52 located in the groove 51 so that it can be held by the operator. In other embodiments, the movable handle 52 located in the groove 51 can also be flipped out of the groove 51 to be held by the operator. When it is necessary to place the pad 50 into the housing 10, the movable handle 52 should retract into the groove 51 so that the movable handle 52 is not higher than the surface of the pad 50, so that multiple pads 50 can be stacked to the required height.

[0071] The liquid anti-G experiment device 1 provided by the present application has at least the following technical effects:

[0072] (1) The experimental animal 2 can be directly immersed in water, and the limbs can be comprehensively wrapped by virtue of the characteristics of water, so that the anti-G effect of the liquid can be verified to the greatest extent;

[0073] (2) Make good use of the structure of the soft waterproof member 30. Its expansion end 32 is sealed to the first opening 111 of the housing 10 with a third fixing member 70 (such as a clamp); its contraction end 31 is further reinforced with a self-adhesive tape on the basis of closely adhering to the body of the experimental animal 2 by its own elasticity, preventing water from overflowing from the neck or armpit, ensuring both sufficient water required for the experiment and avoiding damage to the experimental instruments and equipment due to water ingress.

[0074] (3) During actual experiments, there will be certain differences in body size among the same batch of experimental animals 2. Regarding the body length problem, since the soft waterproof member 30 of this device has a certain degree of up and down mobility due to its softness, and in combination with the use of the backing plate 50, the device can be applicable to experimental animals 2 with different body lengths within a certain range. Regarding the body thickness problem, the structure of the upper cover plate 41 can adjust the size of its opening, solving the problem of different body thicknesses of the experimental animals 2.

[0075] (4) The fastness of the device is guaranteed. The soft waterproof member 30 is fixed to the housing 10 through a third fixing member 70 (such as a clamp), the cover plate 40 is fixed to the housing 10 through a second connecting component (such as a buckle), the housing 10 is fixed to the L-shaped plate through structures such as welding and a second fixing member 60 (such as a clamp), and the L-shaped plate is fixed to an external centrifugal device (acceleration generating device) through bolts. Each part forms an organic whole and is fixed through a rigid structure.

[0076] (5) Two non-movable handles 12 are provided on the outer side wall of the housing 10, facilitating the handling of the device.

[0077] This application also provides an operation method for the liquid anti-G experiment device 1 in any of the above embodiments, including the following steps:

[0078] (1) Measure the distance a from the neck or chest to the coccyx of the large and medium-sized animal 2;

[0079] (2) According to the measured distance, calculate the number of backing plates 50 that need to be placed in the housing 10, and place the corresponding number of backing plates 50;

[0080] In some possible embodiments, obtain the height b of the housing 10 and the thickness c of the backing plate 50. The number of backing plates 50 can be calculated by the following method: (b - a) / c. If it cannot be divided evenly, the rounding method or the rounding-down method can be used, and no specific limitation is made here.

[0081] (3) Sleeve the contraction end 31 of the soft waterproof member 30 on the neck or chest of the large and medium-sized animal 2, sleeve the expansion end 32 of the soft waterproof member 30 on the first opening 111 of the housing 10, and the large and medium-sized animal 2 is located in the accommodation cavity 11;

[0082] In this embodiment, when the large and medium-sized animal 2 is placed in the accommodation cavity 11, the neck or chest of the experimental animal 2 is horizontal or nearly horizontal with the first opening 111 of the housing 10.

[0083] (4) Use a third fixing member 70 (such as a clamp) to closely fit a part (such as 2 - 3 cm) of the expansion end 32 to the outer side wall of the housing 10;

[0084] (5) Pull open the contraction end 31 of the soft waterproof member 30, and pour liquid (such as warm water) into the accommodation cavity 11 to raise the liquid level in the housing 10 to be close to the first opening 111 of the housing 10;

[0085] (6) Use a fourth fixing member 80 (such as a self-adhesive tape) to reinforce the fit between the contraction end 31 of the soft waterproof member 30 and the neck or chest of the large and medium-sized animal 2;

[0086] During operation, the operator can slightly lift the experimental animal, then wind the fourth fixing member 80 around the contraction end 31 of the soft waterproof member 30 and keep it at a certain tightness, which can not only prevent the liquid in the accommodation cavity 11 from overflowing but also allow the experimental animal 2 to breathe normally.

[0087] (7) Loosen the knob 442 of the upper cover plate 41 to make the two semi-circular cover plates 411 of the upper cover plate 41 move towards each other in the first direction (such as the X direction shown in Figure 3 ), and adjust the adjustable opening 412 to the size of the first adapted opening, and the size of the first adapted opening is at least large enough to cover from the head of the large and medium-sized animal 2 to the neck or chest;

[0088] In this embodiment, the size of the first adapted opening is the maximum opening of the adjustable opening 412 to facilitate covering the experimental animal 2 from the head to the neck or chest.

[0089] (8) Put the adjusted cover plate 40 on the neck or chest of the large and medium-sized animal 2, and fix the lower cover plate 42 to the housing 10 through a second connection component (such as a snap component like a convenient buckle, etc.);

[0090] (9) Make the two semi-circular cover plates 411 of the upper cover plate 41 move relative to each other in the first direction (such as the X direction shown in Figure 3 ), and adjust the adjustable opening 412 to the size of the second adapted opening, and the size of the second adapted opening is the size adapted to the neck or chest of the large and medium-sized animal 2;

[0091] (10) Tighten the knob 442 to fix the upper cover plate 41 and the lower cover plate 42.

[0092] Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, those of ordinary skill in the art should understand that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited only to these descriptions. Those skilled in the art can make various changes in form and detail, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A liquid anti-G experiment device for large and medium-sized animals, characterized in that, Comprising: A housing having an accommodation cavity therein, with a first opening provided at one end of the housing, through which the large and medium-sized animal can be placed into the accommodation cavity; A first fixing member for fixing the housing to a centrifugal device; A soft waterproof member having a contraction end and an expansion end, and the soft waterproof member being a hollow through structure in an extended state, wherein the contraction end can be sleeved on the neck or chest of the large and medium-sized animal, and the expansion end can be sleeved on the first opening of the housing; A cover plate that can be detachably connected to the housing, the cover plate being able to cover the first opening, and a second opening being provided on the cover plate, the second opening being able to be sleeved on the neck or chest of the large and medium-sized animal, wherein the cover plate includes an upper cover plate and a lower cover plate, the upper cover plate is detachably fixed to the lower cover plate through a first connection assembly, the lower cover plate is detachably fixed to the housing through a second connection assembly, the second opening includes an adjustable opening and a non-adjustable opening, the adjustable opening is provided on the upper cover plate, the non-adjustable opening is provided on the lower cover plate, when the adjustable opening is adjusted to the smallest opening, the adjustable opening is smaller than the non-adjustable opening, the upper cover plate includes two semi-circular cover plates, and the two semi-circular cover plates can move towards or away from each other in a first direction to make the adjustable opening larger or smaller.

2. The liquid anti-G experiment device according to claim 1, wherein The first connection assembly includes the same number of upper through holes, lower through holes, bolts and screw knobs, the upper through holes are provided on the upper cover plate, the lower through holes are provided on the lower cover plate, after the bolts respectively pass through the upper through holes and the lower through holes, tighten the screw knobs to fix the upper cover plate and the lower cover plate.

3. The liquid anti-G experiment device according to claim 2, wherein, The number of the upper through holes is an even number and can extend in the first direction, the upper through holes are symmetrically arranged on the semi-circular cover plate, and the bolts can move in the upper through holes in the first direction.

4. The liquid anti-G experiment device according to claim 3, characterized in that, The number of the upper through holes is 4, the upper through holes are sequentially connected to form a square, the lower through holes are sequentially connected to form a square, and by tightening the screw knobs, the bolts are clamped on the outer side wall of the housing.

5. The liquid anti-G experiment device according to claim 1, characterized in that, The first fixing member includes an L-shaped plate, the L-shaped plate includes a horizontal plate and a vertical plate perpendicular to the horizontal plate, the horizontal plate is fixed to the bottom surface of the housing, and a first through hole matching with the centrifugal device is provided on the vertical plate, and the housing can be fixed to the centrifugal device through the first through hole.

6. The liquid anti-G experiment device according to claim 1, wherein, It further includes a number of pads adapted to the size of the housing, and by adjusting the number of pads placed in the housing, the force exerted by the neck or chest of the large and medium-sized animal on the cover plate can be reduced.

7. The liquid anti-G experiment device according to claim 6, wherein, The pad is provided with a groove, and a movable handle is provided in the groove, and the movable handle can extend out of the pad to be held by an operator or retract into the groove of the pad.

8. The liquid anti-G experiment device according to claim 5, characterized in that, It further includes a second fixing member, a second through hole is provided on the vertical plate, and the second fixing member can pass through the second through hole to strengthen the firmness between the housing and the L-shaped plate.

9. The liquid anti-G experiment device according to claim 1, characterized in that Further included is a third fixing member. After the expansion end of the soft waterproof member is sleeved on the first opening of the housing, a part of the expansion end can be closely attached to the outer side wall of the housing through the third fixing member.

10. The liquid anti-G experiment device according to claim 1, characterized in that, Further included is a fourth fixing member. The fourth fixing member is flexible and is used to reinforce the degree of fit between the contraction end of the soft waterproof member and the neck or chest of the large and medium-sized animal.

11. A method for operating a liquid anti-G experiment device as described in any one of claims 1-10, characterized in that, The method includes the following steps: Measure the distance from the neck or chest of the large and medium-sized animal to the coccyx; According to the measured distance, calculate the number of cushion plates to be placed in the housing and place the corresponding number of cushion plates; Sleeve the contraction end of the soft waterproof member on the neck or chest of the large and medium-sized animal, sleeve the expansion end of the soft waterproof member on the first opening of the housing, and place the large and medium-sized animal in the accommodation cavity; Use the third fixing member to closely attach a part of the expansion end to the outer side wall of the housing; Pull open the contraction end of the soft waterproof member and pour liquid into the accommodation cavity to raise the liquid level in the housing to be close to the first opening of the housing; Use the fourth fixing member to reinforce the degree of fit between the contraction end of the soft waterproof member and the neck or chest of the large and medium-sized animal; Loosen the knob of the upper cover plate so that the two semi-circular cover plates of the upper cover plate move towards each other in the first direction, and adjust the adjustable opening to the size of the first adapted opening, and the size of the first adapted opening is at least large enough to be sleeved from the head of the large and medium-sized animal to the neck or chest; Put the adjusted cover plate on the neck or chest of the large and medium-sized animal, and fix the lower cover plate to the housing through the second connection component; Make the two semi-circular cover plates of the upper cover plate move relative to each other in the first direction, and adjust the adjustable opening to the size of the second adapted opening, and the size of the second adapted opening is the size adapted to the neck or chest of the large and medium-sized animal; Tighten the knob to fix the upper cover plate and the lower cover plate.

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