Device and method for containing and sealing gas-solid samples on surface of extraterrestrial star

Abstract

The invention discloses a device for containing and sealing gas-solid samples on the surface of an extraterrestrial star. The device is characterized in that an opening and closing driving mechanism is connected with a sealing cover body assembly and a sampling funnel assembly; the vibration compaction assembly is used for carrying out vibration compaction on the contained star soil sample; the sample weighing assembly is used for feeding back the in-orbit weight of the contained star soil sample in real time; the sealing cover body assembly is used for sealing the sealing tank body assembly and is opened under the driving of an opening and closing driving mechanism; the sealed tank body assembly is used for accommodating solid samples with different specifications; the firer pin pulling assemblies are symmetrically installed on the two sides of the main body base assembly, and locking between the sealed tank body assembly and the main body base assembly is achieved; the center of the sample injection funnel assembly is of a funnel structure, and a solid sample enters the sealed tank assembly through the funnel structure; and the opening and closing driving mechanism is a power mechanism for providing cover opening and closing, transposition and sealing of the sealing cover body assembly and the sample injection funnel assembly. The problems of integrated sealing, real-time feedback of the containing state and star soil slope accumulation in the on-orbit sample collection process are solved.

Description

Technical Field

[0001] The invention belongs to the field of deep space exploration and relates to a device and method for sealing gas-solid samples on the surface of an extraterrestrial body. Background Art

[0002] With the successful implementation of lunar and asteroid sampling and return missions at home and abroad, deep space exploration missions are no longer satisfied with collecting, packaging and returning samples. Sampling mechanism products also need to integrate more functions to achieve autonomous control of the entire process of sampling-sample transfer-packaging.

[0003] Since the space sampling mission cycle is often long, for example, the Hayabusa 2 asteroid sampling return probe, which probed the target asteroid 162173 Ryugu, was launched in December 2014, carried out an asteroid sampling mission in April 2019, and returned to Earth in December 2020. After opening the cover, it was found that only 5.4g of samples were obtained. In order to solve the problems of small single sample collection volume and no on-orbit monitoring measures, the OSIRIS mission designed an on-orbit sample quality assessment scheme, which mainly uses the change in the probe inertia before and after sampling to complete the quality assessment of the collected samples, and intends to achieve a sample mass measurement error of less than 90g. If the on-orbit measured sample mass is less than 150g, it is considered that the actual sample collection volume does not meet the 60g requirement. The probe mission plans to have the ability to sample three times on-orbit, and secondary sampling can be carried out if the weighing result does not meet the requirements. However, after the sampling was completed on October 22, 2020, the sample monitoring camera found that the polyester film sealing the sampler was wedged by the stellar soil, causing the acquired stellar soil samples of the Bennu asteroid to leak. The sudden situation caused the ground command center to make an emergency decision to abandon the original mission process of on-orbit measurement of samples and secondary sampling. Finally, it returned to Earth on September 24, 2023. After opening the lid of the glove box and weighing it on February 22, 2024, it was learned that the sample capacity was 121.6g.

[0004] In summary, the space sample containment and sealing solution needs to adapt to the needs of multiple sampling tasks while taking into account the reliability, stability and safety of the space environment. The device must not only ensure efficient sample filling, but also store real-time monitoring of sample quantity. Summary of the invention

[0005] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art, to provide a device and method for sealing gas-solid sample containers on the surface of extraterrestrial bodies, to solve the problems of integrated sealing, real-time feedback of container status and slope accumulation of stellar soil during on-orbit sample collection.

[0006] The present invention discloses a device for containing and sealing gas-solid samples on the surface of an extraterrestrial body, comprising: a vibration compaction component, a sample weighing component, a main base component, a sealing cover component, a sealing tank component, a pyrotechnic pin removal component, a sample injection funnel component and an opening and closing driving mechanism; wherein:

[0007] The vibration compaction assembly, the sample weighing assembly and the sealed tank assembly are installed in the main base assembly from bottom to top; one end of the opening and closing drive mechanism is installed on the outer side wall of the main base assembly; the other end is connected to the sealing cover assembly and the injection funnel assembly; the sealing cover assembly and the injection funnel assembly are respectively located on both sides of the opening and closing drive mechanism;

[0008] Vibration compaction component, to realize oscillation compaction of the contained star soil samples;

[0009] The sample weighing component is used to weigh the contained space soil samples on orbit;

[0010] The sealing cover assembly seals the sealing tank assembly and is opened under the drive of the opening and closing drive mechanism;

[0011] A sealed tank assembly for containing solid samples;

[0012] The pyrotechnic pin puller assembly is symmetrically installed on both sides of the main base assembly to achieve locking between the sealing tank assembly and the main base assembly;

[0013] The injection funnel assembly has a funnel structure at the center, and the solid sample enters the sealed tank assembly through the funnel structure;

[0014] The opening and closing driving mechanism is a power mechanism for providing the opening and closing, rotation and sealing of the sealing cover assembly and the injection funnel assembly.

[0015] Furthermore, in the above device, the vibration compaction component includes a voice coil motor with adjustable output amplitude and frequency to realize the excitation and compaction function of the sealed tank assembly during the sample filling process.

[0016] Furthermore, in the above-mentioned device, the sample weighing assembly includes a one-dimensional force sensor and a cylindrical positioning ball head, wherein the one-dimensional force sensor is arranged at the bottom of the sealed tank assembly for on-orbit weighing of the contained star soil samples; a plurality of cylindrical positioning ball heads are evenly distributed at the bottom of the sealed tank assembly around the circumference of the one-dimensional force sensor as the center, so as to support the sealed tank assembly.

[0017] Furthermore, in the above-mentioned device, the sealing cover body assembly includes a cover body, a fire-operated actuator, a soft metal sealing surface and a sealing ring; wherein, the fire-operated actuator is placed in the cover body, the soft metal sealing surface is placed at the end of the cover body, and the sealing ring is placed on the circumference of the soft metal sealing surface; when the fire-operated actuator is started, the soft metal sealing surface is pushed outward and fits with the sealing tank body assembly to achieve sealing of the collected sample.

[0018] Furthermore, in the above-mentioned device, the opening and closing drive mechanism includes a motor assembly, a screw transmission mechanism, a spiral pair transmission mechanism, an output shaft, a raceway loop and a one-way gate valve; wherein the output shaft connects the sealing cover assembly and the injection funnel assembly; a plurality of channels are arranged in the raceway loop, and the channels intersect to form a fork in the road; the one-way gate valve is arranged at the fork in the raceway loop to form a preset trajectory in the raceway loop; the motor assembly drives the screw transmission mechanism to perform forward or reverse movement, and the screw transmission mechanism drives the spiral pair transmission mechanism, thereby driving the output shaft to switch between linear motion and rotational motion in the preset trajectory in the raceway loop; when the motor assembly drives the output shaft to move to the raceway loop fork, the output shaft pushes the one-way gate valve to reset under the action of the torsion spring, to ensure that the movement direction of the output shaft is irreversible.

[0019] Furthermore, in the above-mentioned device, the vibration compaction assembly includes a voice coil motor, which generates a vibration signal with adjustable output amplitude and frequency to achieve vibration excitation of the sealed tank assembly.

[0020] Furthermore, the above-mentioned device also includes a rotating arm, which is provided with a separation and detachment connector. Before the sealing cover body assembly is locked in the sealing tank body assembly, the sealing cover body assembly is connected to the opening and closing drive mechanism through the rotating arm; after the sealing cover body assembly is locked in the sealing tank body assembly, the rotating arm disconnects from the sealing cover body assembly through the separation and detachment connector.

[0021] The present invention discloses an operating method for a gas-solid sample container sealing device for an extraterrestrial body surface, comprising:

[0022] During initial launch, the sealing cover assembly is in a locked state for sealing the sealing tank assembly;

[0023] When sampling is ready, the pyrotechnic pin puller assembly is unlocked, and the opening and closing drive mechanism drives the sealing cover assembly to be lifted from the sealing tank assembly to the lower end surface of the sealing cover assembly leaving the port of the main base assembly;

[0024] The opening and closing driving mechanism drives the sealing cover assembly and the injection funnel assembly to rotate in a clockwise direction until the injection funnel assembly is transferred to the upper part of the sealing can assembly;

[0025] The motor assembly drives the output shaft to continue to rise, the one-way gate valve is reset, and the ground control equipment drives the motor assembly to reverse, driving the output shaft to descend, driving the injection funnel assembly to the lowest position, and preparing for injection.

[0026] Furthermore, in the above method, it also includes: when starting to inject the sample, the vibration compaction component vibrates and excites the sealed tank component to vibrate and compact the sample;

[0027] After the sample is loaded, the motor assembly rotates forward to drive the output shaft upward, and the sample injection funnel assembly rises to the highest position; the one-way gate valve is reset, and the motor assembly reverses to drive the output shaft downward;

[0028] The opening and closing driving mechanism drives the sealing cover assembly to rotate counterclockwise to a set angle, the sealing cover assembly is transferred to the top of the sealing tank assembly, and the injection funnel assembly is reset;

[0029] The opening and closing driving mechanism drives the sealing cover assembly to vertically descend to the position of the initial state;

[0030] The fire actuator of the sealing cover assembly works to lock the sealing cover assembly in the sealing tank assembly.

[0031] Furthermore, in the above method, it also includes: when the sealing cover assembly is locked in the sealing tank assembly, the sealing cover assembly is disconnected from the opening and closing drive mechanism by separating the drop-off connector;

[0032] The opening and closing driving mechanism drives the sample injection funnel assembly to be lifted and rotated to the avoidance position, and the robotic arm of the star table assists the sealing cover assembly and the sealing tank assembly to be transferred into the collection cabin.

[0033] The advantages of the present invention compared with the prior art are:

[0034] (1) In order to meet the needs of effective packaging and sealing of sample tubes, single stones, and small soil particles obtained by sampling under a fire surface environment, the present invention proposes a design scheme of an integrated packaging and sealing mechanism, which integrates multiple functions such as sample loading, shaping, weighing, and sealing. By accurately controlling the sinusoidal vibration excitation of the harmonic motor and the resistance strain force sensor, the slope accumulation phenomenon during sample collection is solved, and the efficiency of sample packaging is maximized. At the same time, through the design of the slideway loop and the one-way gate valve, the free switching between the sample receiving funnel and the sealing cover under a single driving source is realized.

[0035] (2) The present invention adopts an integrated container and seal for collecting samples of extraterrestrial surface gas and solid by multiple means, and stores atmospheric samples, primary packaged sample tubes, individual stones, and broken small soil particles collected from the extraterrestrial surface without partitioning. Through the strategy of sequential storage and unified sealing, the integrity of the device is improved, which is beneficial to the integrated design of the landing impact resistance performance during the return process, as well as the simplification of the ground sample opening process.

[0036] (3) The present invention uses a harmonic motor to precisely control the sinusoidal vibration excitation to achieve the shaping and compaction of the stored sample. The harmonic motor is used to generate sinusoidal vibration excitation to adjust the distribution of particles in the container to achieve the effect of sample vibration compaction. This vibration excitation can effectively redistribute the particles and reduce the slope accumulation phenomenon, thereby increasing the uniformity of the sample and the filling amount of the container.

[0037] (4) The present invention adopts a reasonable arrangement of resistance strain force sensors to monitor the sample loading status. When filling the soil sample, the sensor detects the gravity of the soil sample. This force causes the elastic body of the sensor to deform. The deformation of the elastic body is converted into an electrical signal through a conversion element made using the Wheatstone bridge principle, which can achieve high reliability, stability and long life of the product's function / performance.

[0038] (5) The present invention adopts a single driving source to realize the timing combination of linear and rotary motion of the opening and closing mechanism, and utilizes a slide circuit and a one-way gate valve to realize multiple working modes of the mechanism product, namely, "initial state → preparing for sample loading", "sample loading completed → tank sealing" and "sample sealing → sample rotation and departure", to realize the timing combination of linear and rotary motion of the mechanism product. Each one-way gate valve is equipped with two cylindrical helical torsion springs to increase the reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the mechanical structure of the device of the present invention; (a) is a schematic diagram of the cross-sectional structure layout; (b) is a main view;

[0040] Figure 2 Schematic diagram of the launch and compression state of the device of the present invention; (a) is a front view; (b) is a top view;

[0041] Figure 3 Schematic diagram of the cover opening and conversion state of the device of the present invention; (a) is a front view; (b) is a top view;

[0042] Figure 4 Schematic diagram of the device of the present invention in the state of receiving a sample and loading a container; (a) is a main view; (b) is a top view;

[0043] Figure 5 Schematic diagram of the sealing state of the device of the present invention; (a) is a front view; (b) is a top view;

[0044] Figure 6 It is a schematic diagram of the opening and closing driving mechanism of the device of the present invention;

[0045] Figure 7 Schematic diagram of the forward motion timing of the driving mechanism of the device of the present invention; (a) is the lifting sealing cover assembly, and (b) is the falling injection funnel assembly;

[0046] Figure 8 Schematic diagram of the reverse motion timing of the driving mechanism of the device of the present invention; (a) is to lift the injection funnel assembly, and (b) is to restore the sealing cover assembly;

[0047] Fig. 9 It is a schematic diagram of a one-way gate valve of the driving mechanism of the device of the present invention;

[0048] Fig.10It is a schematic diagram of the principle of excitation of the star soil container of the device of the present invention. DETAILED DESCRIPTION

[0049] The working principle and working process of the present invention will be further explained and illustrated below in conjunction with the accompanying drawings.

[0050] like Figure 1 As shown, the present invention discloses a device for containing and sealing gas-solid samples on the surface of an extraterrestrial body, comprising: a vibration compaction component 1, a sample weighing component 2, a main base component 3, a sealing cover component 4, a sealing tank component 5, a pyrotechnic pin removal component 6, a sample injection funnel component 7 and an opening and closing drive mechanism 8; wherein,

[0051] The vibration compaction assembly 1, the sample weighing assembly 2 and the sealed tank assembly 5 are installed in the main base assembly 3 from bottom to top; one end of the opening and closing drive mechanism 8 is installed on the outer side wall of the main base assembly 3; the other end is connected to the sealing cover assembly 4 and the injection funnel assembly 7; the sealing cover assembly 4 and the injection funnel assembly 7 are respectively located on both sides of the opening and closing drive mechanism 8;

[0052] A vibration compaction component 1 is used to implement vibration compaction of the contained star soil sample;

[0053] Sample weighing component 2, for weighing the contained space soil samples on-orbit;

[0054] The sealing cover assembly 4 seals the sealing tank assembly 5 and is opened under the drive of the opening and closing drive mechanism 8;

[0055] A sealed tank assembly 5, used for containing a solid sample;

[0056] The pyrotechnic pin puller assembly 6 is symmetrically mounted on both sides of the main base assembly 3 to achieve locking between the sealing tank assembly 5 and the main base assembly 3;

[0057] The sampling funnel assembly 7 has a funnel structure at its center, and the solid sample enters the sealed tank assembly 5 through the funnel structure;

[0058] The opening and closing driving mechanism 8 is a power mechanism for providing the opening and closing, rotation and sealing of the sealing cover assembly 4 and the injection funnel assembly 7 .

[0059] Preferably, the vibration compaction assembly 1 includes a voice coil motor with adjustable output amplitude and frequency to realize the excitation and compaction function of the sealed tank assembly 5 during the sample filling process.

[0060] Preferably, the sample weighing assembly 2 includes a one-dimensional force sensor and a cylindrical positioning ball head, wherein the one-dimensional force sensor is arranged at the bottom of the sealed tank assembly 5 for on-orbit weighing of the contained star soil samples; a plurality of cylindrical positioning ball heads are evenly distributed at the bottom of the sealed tank assembly 5 in a circle with the one-dimensional force sensor as the center, so as to support the sealed tank assembly 5.

[0061] Preferably, the sealing cover body assembly 4 includes a cover body, a fire-operated actuator, a soft metal sealing surface and a sealing ring; wherein the fire-operated actuator is placed in the cover body, the soft metal sealing surface is placed at the end of the cover body, and the sealing ring is placed on the circumference of the soft metal sealing surface; when the fire-operated actuator is started, the soft metal sealing surface is pushed outward and fits with the sealing tank body assembly 5 to achieve sealing of the collected sample.

[0062] Preferably, the opening and closing drive mechanism 8 comprises a motor assembly 8-1, a screw transmission mechanism 8-2, a screw pair transmission mechanism 8-3, an output shaft 8-4, a roller track loop 8-5 and a one-way gate valve 8-6; wherein the output shaft 8-4 is connected to the sealing cover assembly 4 and the injection funnel assembly 7; a plurality of channels are arranged in the roller track loop 8-5, and the channels intersect to form a fork in the road; the one-way gate valve 8-6 is arranged at the fork in the roller track loop 8-5, so that a preset track is formed in the roller track loop 8-5; The motor assembly 8-1 drives the screw transmission mechanism 8-2 to move forward or reverse, and the screw transmission mechanism 8-2 drives the spiral pair transmission mechanism 8-3, which in turn drives the output shaft 8-4 to switch between linear motion and rotational motion along a preset trajectory in the rolling circuit 8-5; when the motor assembly 8-1 drives the output shaft 8-4 to move to the fork in the rolling circuit 8-5, the output shaft 8-4 pushes the one-way gate valve 8-6 to reset under the action of the torsion spring, ensuring that the movement direction of the output shaft 8-4 is irreversible.

[0063] Preferably, the vibration compaction assembly 1 includes a voice coil motor, which generates a vibration signal with adjustable output amplitude and frequency to achieve vibration excitation of the sealed tank assembly 5.

[0064] Preferably, it also includes a rotating arm 41, which is provided with a separation and detachment connector. Before the sealing cover assembly 4 is locked in the sealing tank assembly 5, the sealing cover assembly 4 is connected to the opening and closing drive mechanism 8 through the rotating arm 41; after the sealing cover assembly 4 is locked in the sealing tank assembly 5, the rotating arm 41 disconnects from the sealing cover assembly 4 through the separation and detachment connector.

[0065] The present invention discloses an operating method for a gas-solid sample container sealing device for an extraterrestrial body surface, comprising:

[0066] During the initial launch, the sealing cover assembly 4 is in a locked state for sealing the sealing tank assembly 5;

[0067] When sampling is ready, the pyrotechnic pin puller assembly 6 is unlocked, and the opening and closing drive mechanism 8 drives the sealing cover assembly 4 to be lifted from the sealing tank assembly 5 to the lower end surface of the sealing cover assembly 4 leaving the port of the main base assembly 3;

[0068] The opening and closing driving mechanism 8 drives the sealing cover assembly 4 and the injection funnel assembly 7 to rotate in a clockwise direction until the injection funnel assembly 7 is transferred to the upper part of the sealing can assembly 5;

[0069] The motor assembly 8-1 drives the output shaft 8-4 to continue to rise, the one-way gate valve 8-6 is reset, and the ground control equipment drives the motor assembly 8-1 to reverse, drives the output shaft 8-4 to descend, and drives the injection funnel assembly 7 to reach the lowest position, ready for injection.

[0070] When the sample is started, the vibration compaction component 1 performs vibration excitation on the sealed tank component 5 to perform vibration compaction on the sample;

[0071] After the sample is loaded, the motor assembly 8-1 rotates forward to drive the output shaft 8-4 to rise, and the injection funnel assembly 7 rises to the highest position; the one-way gate valve 8-6 is reset, and the motor assembly 8-1 rotates reversely to drive the output shaft 8-4 to descend;

[0072] The opening and closing driving mechanism 8 drives the sealing cover assembly 4 to rotate a certain angle in the counterclockwise direction, the sealing cover assembly 4 is transferred to the top of the sealing tank assembly 5, and the injection funnel assembly 7 is reset;

[0073] The opening and closing driving mechanism 8 drives the sealing cover assembly 4 to vertically descend to the position of the initial state;

[0074] The fire actuator of the sealing cover assembly 4 works to lock the sealing cover assembly 4 in the sealing tank assembly 5.

[0075] When the sealing cover assembly 4 is locked in the sealing tank assembly 5, the sealing cover assembly 4 is disconnected from the opening and closing drive mechanism 8 by separating the drop-off connector;

[0076] The opening and closing driving mechanism 8 drives the sample injection funnel assembly 7 to be lifted and rotated to the avoidance position, and the robot arm of the star chart assists the sealing cover assembly 4 and the sealing tank assembly 5 to be transferred into the collection cabin.

[0077] This embodiment provides a device for sealing gas-solid samples on the surface of an extraterrestrial body. Taking the Mars sampling process as an example, the whole cycle of the Mars surface sample sealing task can be divided into four working modes: launching and pressing state, opening and switching state, receiving and filling state, and sealing and switching state. Figure 2 ~Attached Figure 5 shown.

[0078] Since the samples contained in the extraterrestrial surface may contain primary packaged sample tubes, individual stones, and small soil particles, the tilt angle of the whole device and the gathering of samples in the container are prone to form a slope accumulation phenomenon. The harmonic motor outputs sinusoidal vibration excitation to evenly distribute and collect samples. The product design process involves three key parameters: vibration amplitude A, vibration frequency ω, and vibration intensity (Aω 2 / g). Compared with the Martian soil particles, the primary sample packaging tube and the stone are objects with larger mass, which will generate instantaneous inertial force on the line. The most complex working condition is that there are several primary packaging sample tubes, single stones with centimeter-sized particles, and a large number of broken small-structured Martian soil particles in the container. The material distribution in the container is close to the container's limit capacity. Therefore, if the selected one can adapt to the most complex working condition, the vibration amplitude A and vibration frequency ω at this time are conservative values. Applying the harmonic motor corresponding to this set of values ​​to other working conditions in turn may also produce good results, but the efficiency is low.

[0079] The solution is to first comprehensively consider the maximum upper limit of the vibration amplitude and vibration frequency of the harmonic motor under multiple factors such as heat, fatigue, and reliability. Then determine the possible combination of multiple vibration amplitudes and vibration frequencies. And analyze based on the most complex working conditions to obtain the optimal vibration amplitude A. opt and the vibration frequency ω opt After that, this combination is applied to other working conditions in turn to analyze whether it can meet other working conditions. opt and the vibration frequency ω opt is the final expected value. Fig.10 shown.

[0080] The sample mass measurement unit uses a circular force sensor to realize its function. The mass measurement unit is symmetrically installed at the bottom of the solid sample collection container. When weighing, there is a certain gap between the voice coil motor output shaft and the container body. The mounting bracket ensures the verticality of the container body. The vertical force of the two satisfies the guarantee F=G. According to the gravitational acceleration of the landing point of Mars, the mass of the sample can be calculated.

[0081] The movement of the sealing cover during the sample filling and sealing process is first lifting → then rotating → finally descending, which is achieved by the opening and closing drive mechanism (see attached Figure 6 As shown in the figure, it is mainly composed of a linear motion helical pair and a rotary motion helical pair. The linear motion pair is a screw and nut mechanism, which can convert the rotary motion of the screw into the linear motion of the nut; the rotary motion helical pair is actually a screw rod and a screw sleeve mechanism, which can convert the linear motion of the nut into the rotary motion of the screw sleeve, and the timing combination of linear motion and rotary motion is realized by using the raceway circuit and the limit mechanism of the one-way gate valve.

[0082] The working steps of the opening and closing drive mechanism are mainly divided into three steps: from the initial state to the preparation for sample loading, from the completion of sample loading to the closing of the tank cover, and from the sealing of the sample to the preparation for sample transfer. 1) The movement relationship of "initial state → preparation for sample loading" uses the slideway loop and the one-way gate valve to control the movement direction. The movement path is shown in the attached figure. Figure 7 As shown, it is similar to an “n”-shaped loop; 2) “Filling completed → Tank sealed” motion relationship, the motion path is as shown in the attached Figure 8 As shown in the figure, it is also similar to the "n" type loop, but the path is different from 1); 3) the movement relationship of "sample sealing → sample transfer preparation" is the same as the path of "initial state to sample preparation". Fig. 9 (As shown) The redundant design of two cylindrical helical torsion springs is considered to increase the reliability of the mechanism movement.

[0083] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0084] The above embodiments are only explanations of the present invention and cannot be used as limitations of the present invention. Therefore, all implementation methods similar to the concept of the present invention or implementation methods used in other similar structures but with similar concepts to the present invention are within the protection scope of the present invention.

[0085] The above description is only the best specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

[0086] The contents not described in detail in the specification of the present invention belong to the common knowledge of the professionals in this field.

Claims

1. A device for sealing gas-solid samples on the surface of an extraterrestrial body, characterized in that: include: A vibration compaction component (1), a sample weighing component (2), a main base component (3), a sealing cover component (4), a sealing tank component (5), a pyrotechnic pin removal component (6), a sample injection funnel component (7) and an opening and closing drive mechanism (8); wherein: The vibration compaction component (1), the sample weighing component (2) and the sealed tank component (5) are installed from bottom to top in the main base component (3); one end of the opening and closing drive mechanism (8) is installed on the outer side wall of the main base component (3); the other end is connected to the sealing cover component (4) and the injection funnel component (7); the sealing cover component (4) and the injection funnel component (7) are respectively located on both sides of the opening and closing drive mechanism (8); A vibration compaction component (1) is used to implement vibration compaction of the contained star soil sample; A sample weighing component (2) is used to weigh the contained space soil samples on-orbit; The sealing cover assembly (4) seals the sealing tank assembly (5) and is opened under the drive of the opening and closing drive mechanism (8); A sealed tank assembly (5) for containing a solid sample; The pyrotechnic pin extraction assembly (6) is symmetrically mounted on both sides of the main body base assembly (3) to achieve locking between the sealing tank assembly (5) and the main body base assembly (3); The sampling funnel assembly (7) has a funnel structure at its center, and the solid sample enters the sealed tank assembly (5) through the funnel structure; The opening and closing driving mechanism (8) is a power mechanism for providing the opening and closing, rotation and sealing of the sealing cover assembly (4) and the injection funnel assembly (7).

2. The device for containing and sealing gas-solid samples on the surface of an extraterrestrial body according to claim 1, characterized in that: The vibration compaction component (1) comprises a voice coil motor with adjustable output amplitude and frequency, and realizes the function of exciting and compacting the star soil in the sealed tank component (5) during the sample filling process.

3. The device for containing and sealing gas-solid samples on the surface of an extraterrestrial body according to claim 1, characterized in that: The sample weighing assembly (2) comprises a one-dimensional force sensor and a cylindrical positioning ball head, wherein the one-dimensional force sensor is arranged at the bottom of the sealed tank assembly (5) and is used to perform on-orbit weighing of the contained star soil sample; and a plurality of cylindrical positioning ball heads are evenly distributed at the bottom of the sealed tank assembly (5) around a circle with the one-dimensional force sensor as the center, and play a supporting role for the sealed tank assembly (5).

4. The device for containing and sealing gas-solid samples on the surface of an extraterrestrial body according to claim 1, characterized in that: The sealing cover assembly (4) comprises a cover, a pyrotechnic actuator, a soft metal sealing surface and a sealing ring; wherein the pyrotechnic actuator is placed in the cover, the soft metal sealing surface is placed at the end of the cover, and the sealing ring is placed on the circumference of the soft metal sealing surface; when the pyrotechnic actuator is activated, the soft metal sealing surface is pushed outwards and fits with the sealing tank assembly (5) to achieve sealing of the collected sample.

5. The device for containing and sealing gas-solid samples on the surface of an extraterrestrial body according to claim 1, characterized in that: The opening and closing drive mechanism (8) comprises a motor assembly (8-1), a screw transmission mechanism (8-2), a screw pair transmission mechanism (8-3), an output shaft (8-4), a roller track loop (8-5) and a one-way gate valve (8-6); wherein the output shaft (8-4) is connected to the sealing cover assembly (4) and the injection funnel assembly (7); a plurality of channels are arranged in the roller track loop (8-5), and the channels intersect to form a fork in the road; the one-way gate valve (8-6) is arranged at the fork in the roller track loop (8-5), so that a preset track is formed in the roller track loop (8-5); The motor assembly (8-1) drives the screw transmission mechanism (8-2) to perform forward or reverse movement, and the screw transmission mechanism (8-2) drives the helical pair transmission mechanism (8-3), thereby driving the output shaft (8-4) to switch between linear motion and rotational motion along a preset trajectory in the rolling track loop (8-5); when the motor assembly (8-1) drives the output shaft (8-4) to move to a fork in the rolling track loop (8-5), the output shaft (8-4) pushes the one-way gate valve (8-6) to reset under the action of the torsion spring, thereby ensuring that the movement direction of the output shaft (8-4) is irreversible.

6. The device for containing and sealing gas-solid samples on the surface of an extraterrestrial body according to claim 1, characterized in that: The vibration compaction component (1) comprises a voice coil motor, which generates a vibration signal with adjustable output amplitude and frequency, thereby achieving vibration excitation of the sealed tank component (5).

7. The device for containing and sealing gas-solid samples on the surface of an extraterrestrial body according to claim 1, characterized in that: The invention also comprises a rotating arm (41), wherein the rotating arm (41) is provided with a separating and falling-off connector. Before the sealing cover assembly (4) is locked in the sealing tank assembly (5), the sealing cover assembly (4) is connected to the opening and closing driving mechanism (8) through the rotating arm (41); after the sealing cover assembly (4) is locked in the sealing tank assembly (5), the rotating arm (41) is disconnected from the sealing cover assembly (4) through the separating and falling-off connector.

8. An operating method for a gas-solid sample container sealing device for an extraterrestrial body surface, characterized in that: include: During initial launch, the sealing cover assembly (4) is in a locked state for sealing the sealing tank assembly (5); When sampling is ready, the pyrotechnic pin puller assembly (6) is unlocked, and the opening and closing drive mechanism (8) drives the sealing cover assembly (4) to be lifted from the sealing tank assembly (5) to the port where the lower end surface of the sealing cover assembly (4) leaves the main base assembly (3); The opening and closing driving mechanism (8) drives the sealing cover assembly (4) and the injection funnel assembly (7) to rotate in a clockwise direction until the injection funnel assembly (7) is transferred to the upper part of the sealing can assembly (5); The motor assembly (8-1) drives the output shaft (8-4) to continue to rise, the one-way gate valve (8-6) is reset, and the ground control equipment drives the motor assembly (8-1) to reverse, driving the output shaft (8-4) to descend, driving the injection funnel assembly (7) to reach the lowest position, and preparing for injection.

9. The method for operating the gas-solid sample container and sealing device for the surface of an extraterrestrial body according to claim 8, characterized in that: Also includes: When the sample is injected, the vibration compaction component (1) vibrates and excites the sealed tank component (5) to perform vibration compaction on the sample; After the sample is loaded, the motor assembly (8-1) rotates forward to drive the output shaft (8-4) to rise, and the sample injection funnel assembly (7) rises to the highest position; the one-way gate valve (8-6) is reset, and the motor assembly (8-1) rotates reversely to drive the output shaft (8-4) to descend; The opening and closing driving mechanism (8) drives the sealing cover assembly (4) to rotate counterclockwise to a set angle, the sealing cover assembly (4) is transferred to the top of the sealing tank assembly (5), and the injection funnel assembly (7) is reset; The opening and closing driving mechanism (8) drives the sealing cover assembly (4) to vertically descend to the position of the initial state; The fire actuator of the sealing cover assembly (4) is operated to lock the sealing cover assembly (4) in the sealing tank assembly (5).

10. The method for operating the gas-solid sample container and sealing device for the surface of an extraterrestrial body according to claim 9, characterized in that: Also includes: When the sealing cover assembly (4) is locked in the sealing tank assembly (5), the sealing cover assembly (4) and the opening and closing drive mechanism (8) are disconnected by separating the drop-off connector; The opening and closing driving mechanism (8) drives the sample injection funnel assembly (7) to be lifted and rotated to the avoidance position, and the mechanical arm of the star table assists the sealing cover assembly (4) and the sealing tank assembly (5) to be transferred into the collection cabin.

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