A Mars sampling device and a Mars aircraft

Abstract

The present invention provides a Mars sampling device, which includes an outer cylinder and an inner cylinder. The inner cylinder is coaxially and slidably arranged inside the outer cylinder. An inner and outer cylinder telescopic driving mechanism is provided on the outer cylinder and the inner cylinder. A connecting disk is fixedly connected to the lower end of the inner cylinder. Sampling claws are rotatably connected to the connecting disk to enable the sampling claws to turn up and down. A groove adapted to the sampling claws is provided on the outer wall of the inner cylinder. A torsion spring is provided between the connecting disk and the sampling claws. The torsion spring is used to retract the sampling claws into the groove on the outer wall of the inner cylinder or release the sampling claws from the groove on the outer wall of the inner cylinder. A sampling claw retracting and releasing mechanism is provided inside the inner cylinder. In the Mars mission, the present invention can fly relative to the Mars ground and is not affected by the geological landforms on the Mars surface, ensuring the stability and reliability of sample collection. The present invention also has the characteristics of simple structure and light weight.

Description

Technical Field

[0001] The present invention relates to a Mars sampling device and a Mars aircraft, belonging to the technical field of space resource exploration. Background Art

[0002] As the planet closest to the Earth, Mars has always attracted much attention. To explore the origin of life and the development history of planets, using a sampling device to study the surface composition of Mars is an important part of human exploration of Mars, and Mars sample return has become the main task of various countries' exploration of Mars. At present, the existing Mars exploration methods mostly use two methods, namely landers and rovers, to collect surface samples. Both can only move on the ground, and the sampling range and speed of samples are limited by terrain conditions, with poor environmental adaptability, and it is difficult to achieve high-precision and repeatable efficient sampling. Summary of the Invention

[0003] The purpose of the present invention is to provide a Mars sampling device and a Mars aircraft, which can fly relative to the Mars ground during Mars missions,

[0004] being unaffected by the geological and geomorphic features of the Mars surface, and ensuring the stability and reliability of sample collection.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0006] A Mars sampling device includes an outer cylinder and an inner cylinder. The inner cylinder is coaxially and slidably arranged inside the outer cylinder. An inner and outer cylinder telescopic driving mechanism is provided on the outer cylinder and the inner cylinder. A connecting disk is fixedly connected to the lower end of the inner cylinder. Sampling claws are rotatably connected to the connecting disk to turn the sampling claws up and down. A groove adapted to the sampling claws is provided on the outer wall of the inner cylinder. A torsion spring is provided between the connecting disk and the sampling claws. The torsion spring is used to retract the sampling claws into the groove on the outer wall of the inner cylinder or release the sampling claws from the groove on the outer wall of the inner cylinder. A sampling claw retracting and releasing mechanism is provided inside the inner cylinder.

[0007] Preferably, the sampling claw retracting and releasing mechanism includes a ball screw. The ball screw includes a screw rod and a lifting sliding sleeve. A thread is provided on the screw rod. The lifting sliding sleeve is slidably matched with the screw rod. An installation support is provided at the lower end of the screw rod. The installation support is fixedly connected to the inner cylinder. The upper end of the screw rod is connected to a screw rod driving motor. The screw rod driving motor is fixedly connected to the inner wall of the inner cylinder through a motor support. The lifting sliding sleeve is connected to the sampling claws through a second driving rope. A through hole through which the second driving rope can pass is provided on the inner cylinder.

[0008] Preferably, guide wheels are symmetrically arranged circumferentially along the lifting sliding sleeve. Guide grooves adapted to the guide wheels are provided on the inner wall of the inner cylinder.

[0009] Preferably, the sampling claw includes a claw body which is in the shape of a bent rod. The upper end of the claw body is connected to the connecting disc, and a claw head is provided at the lower end of the claw body.

[0010] Preferably, the claw head is hemispherical, and the maximum outer diameter of the claw head is greater than the outer diameter of the claw body.

[0011] Preferably, the number of the sampling claws is several, and the several sampling claws are evenly distributed circumferentially along the connecting disc.

[0012] Preferably, the inner and outer cylinder telescopic driving mechanism includes a chute and a slider. The chute is arranged on the axial direction of the outer cylinder, the slider is arranged at the upper end of the outer wall of the inner cylinder and extends into the chute, the slider is matched with the chute, and the slider is connected with an inner cylinder driving device.

[0013] Preferably, the inner cylinder driving device includes a driving wheel which is arranged at the upper end of the outer cylinder. A telescopic driving motor is connected to the end side of the driving wheel. The driving wheel is wound with a first driving rope and a rope wheel, and the rope wheel is arranged at the lower end of the outer cylinder.

[0014] A Mars aircraft includes a Mars aircraft body and a Mars sampling device. The top of the outer cylinder of the Mars sampling device is fixedly connected to the bottom of the Mars aircraft body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Through the setting of the torsion spring in the present invention, the sampling claw can be opened downward for sampling during sampling, and the sampling claw can tightly hold the sample after sampling. Through the setting of the telescopic inner cylinder, the distance from the picked sample can be adjusted. Through the groove which is arranged on the outer wall of the inner cylinder and is adapted to the sampling claw, the structural damage of the sampling claw caused by problems such as vibration overload during the launch process can be avoided. Through the maximum outer diameter of the claw head of the sampling claw being greater than the outer diameter of the claw body, the sampling claw is not easy to fall off when grasping an object. Samples with scientific value at a farther distance can be collected, ensuring the stability and reliability of the sample collection of the Mars aircraft during the sampling mission. The structure is simple and the quality is light. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the Mars aircraft of the present invention.

[0018] Figure 2 It is a schematic structural diagram of an embodiment of the Mars sampling device of the present invention.

[0019] Figure 3 It is Figure 2 the internal structural diagram of the embodiment.

[0020] In the figure: 1. Mars aircraft; 2. Mars sampling device; 2-1. Outer cylinder; 2-2. Inner cylinder; 2-3. Telescopic drive motor; 2-4. Driving wheel; 2-5. Rope wheel; 2-6. Driving rope; 2-7. Lead screw drive motor; 2-8. Motor support; 2-9. Guide wheel; 2-10. Ball screw; 2-11. Lifting sliding sleeve; 2-12. Mounting support; 2-13. Torsion spring; 2-14. Connecting plate; 2-15. Sampling claw. Detailed implementation manners

[0021] Next, the present invention will be further described in conjunction with the accompanying drawings:

[0022] In the description of the present invention, it should be noted that all directional indications (such as up, down, etc.) are based on the orientation or positional relationship shown in the accompanying drawings. 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 cannot be understood as a limitation to the present invention; in addition, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 the present invention can be understood according to specific circumstances.

[0023] As Figures 1-3 shown, the present invention discloses a Mars sampling device, including an outer cylinder 2-1 and an inner cylinder 2-2. The inner cylinder 2-2 is coaxially and slidably arranged inside the outer cylinder 2-1. An inner and outer cylinder telescopic drive mechanism is provided on the outer cylinder 2-1 and the inner cylinder 2-2. The inner and outer cylinder telescopic drive mechanism includes a chute and a slider. The chute is arranged on the axial direction of the outer cylinder 2-1, and the slider is arranged at the upper end of the outer wall of the inner cylinder 2-2 and extends into the chute. The slider and the chute cooperate with each other to prevent the inner cylinder 2-2 from rotating in the outer cylinder 2-1. The slider is connected with an inner cylinder drive device. The inner cylinder drive device includes a driving wheel 2-4. The driving wheel 2-4 is arranged at the upper end of the outer cylinder 2-1. The end side of the driving wheel 2-4 is connected with a telescopic drive motor 2-3. The driving wheel 2-4 is wound around a rope wheel 2-5 through a first driving rope 2-6. The rope wheel 2-5 is arranged at the lower end of the outer cylinder 2-1 and is used to control the telescopic movement of the inner cylinder 2-2 in the outer cylinder 2-1, so as to conveniently adjust the distance from the sample to be picked up.

[0024] A connecting disk 2-14 is fixedly connected to the lower end of the inner cylinder 2-2. A sampling claw 2-15 is rotatably connected to the connecting disk 2-14 to enable the sampling claw to turn up and down. A groove adapted to the sampling claw 2-15 is provided on the outer wall of the inner cylinder 2-2. Preferably, the sampling claw 2-15 includes a claw body which is in the shape of a bent rod. A bending inflection point is provided in the middle of the claw body. The bending inflection point divides the claw body into an upper half and a lower half. The bending inflection point causes a certain included angle to be formed inwardly between the upper half and the lower half of the claw body, and the included angle is preferably 120°-160°. The upper end of the claw body is connected to the connecting disk 2-14, and a claw head is provided at the lower end of the claw body. The claw head is hemispherical, and the maximum outer diameter of the claw head is greater than the outer diameter of the claw body. The number of the sampling claws 2-15 can be 1 or several. Several sampling claws 2-15 are evenly distributed circumferentially along the connecting disk 2-14. Preferably, there are 3 sampling claws 2-15, which is convenient for more stable sample collection and improvement of the picking efficiency. A torsion spring 2-13 is provided between the connecting disk 2-14 and the sampling claw 2-15. The torsion spring 2-13 is used to retract the sampling claw 2-15 into the groove on the outer wall of the inner cylinder 2-2 or release the sampling claw 2-15 from the groove on the outer wall of the inner cylinder 2-2, which can avoid structural damage of the sampling claw due to problems such as vibration overload during the launch process and release the sampling claw 2-15 when sampling is required.

[0025] A sampling claw retracting and releasing mechanism is provided in the inner cylinder 2-2. The sampling claw retracting and releasing mechanism includes a ball screw 2-10. The ball screw 2-10 includes a screw rod and a lifting sliding sleeve 2-11. A thread is provided on the screw rod. The lifting sliding sleeve 2-11 is slidably matched with the screw rod. An installation support 2-12 is provided at the lower end of the screw rod. The installation support 2-12 is fixedly connected to the inner cylinder 2-2. The upper end of the screw rod is connected to a screw rod driving motor 2-7. The screw rod driving motor 2-7 is fixedly connected to the inner wall of the inner cylinder 2-2 through a motor support 2-8. The lifting sliding sleeve 2-11 is connected to the sampling claw 2-15 through a second driving rope. A through hole through which the second driving rope can pass is provided on the inner cylinder 2-2. The screw rod driving motor 2-7 drives the screw rod to move, driving the lifting sliding sleeve 2-11 to move up and down. The second driving rope starts from the lifting sliding sleeve 2-11, passes out of the inner cylinder 2-2 to the outside of the inner cylinder 2-2 to the sampling claw 2-15. The lifting sliding sleeve 2-11 drives the sampling claw 2-15 to clamp or release through the second driving rope. Preferably, guide wheels 2-9 are symmetrically provided circumferentially along the lifting sliding sleeve 2-11. Guide grooves matched with the guide wheels 2-9 are provided on the inner wall of the inner cylinder 2-2 to prevent the screw rod from generating self-rotation, resulting in the situation where the lifting sliding sleeve 2-11 cannot move up and down normally.

[0026] AsFigure 1 As shown in the figure, the present invention also discloses a Mars aircraft, including an aircraft body and a Mars sampling device. The top of the outer cylinder 2-1 of the Mars sampling device is fixedly connected to the bottom of the Mars aircraft body. It can fly relative to the Mars ground during the Mars sampling mission, is not affected by the geological and geomorphic features on the Mars surface, and ensures the stability and reliability of sample collection.

[0027] Working principle:

[0028] In the launch state, the inner cylinder shrinks inside the outer cylinder. The lifting sliding sleeve 2-11 is connected to the sampling claw through the second driving rope. A torsion spring 2-13 is installed at the connection between the sampling claw 2-15 and the connection disk. The sampling claw shrinks in the groove on the outer wall of the inner cylinder to avoid structural damage to the sampling claw due to vibration overload and other problems during the launch process. When the aircraft conducts sampling, the telescopic drive motor drives the drive wheel to rotate clockwise to make the inner cylinder extend downward relative to the outer cylinder. At the same time, the lead screw drive motor drives the lead screw to rotate, and then makes the lifting sliding sleeve move downward. When all the sampling claws that shrink in the groove on the outer wall of the inner cylinder are exposed, the sampling claws flip from the outside to the inside, and the torsion spring makes the sampling claws open downward for sampling. After sampling, the lifting sliding sleeve continues to move downward, and the torsion spring makes the sampling claws firmly hold the sample. The telescopic drive motor rotates to drive the drive wheel to rotate counterclockwise, making the inner cylinder rise, and the aircraft takes off to transport the sample. After reaching the sample collection destination, the lifting sliding sleeve moves upward, making the sampling claws release the sample.

[0029] In summary, for the Mars sampling device provided by the present invention, it should be finally noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A Mars sampling device, characterized in that It includes an outer cylinder (2-1) and an inner cylinder (2-2). The inner cylinder (2-2) is coaxially and slidably arranged inside the outer cylinder (2-1). An inner and outer cylinder telescopic driving mechanism is provided on the outer cylinder (2-1) and the inner cylinder (2-2). A connecting disk (2-14) is fixedly connected to the lower end of the inner cylinder (2-2). A sampling claw (2-15) is rotatably connected to the connecting disk (2-14) to enable the sampling claw to flip up and down. A groove adapted to the sampling claw (2-15) is provided on the outer wall of the inner cylinder (2-2). A torsion spring (2-13) is provided between the connecting disk (2-14) and the sampling claw (2-15). The torsion spring (2-13) is used to retract the sampling claw (2-15) into the groove on the outer wall of the inner cylinder (2-2) or release the sampling claw (2-15) from the groove on the outer wall of the inner cylinder (2-2). A sampling claw retracting and releasing mechanism is provided inside the inner cylinder (2-2).

2. The Mars sampling device according to claim 1, characterized in that The sampling claw retracting and releasing mechanism includes a ball screw (2-10). The ball screw (2-10) includes a screw rod and a lifting sliding sleeve (2-11). A thread is provided on the screw rod. The lifting sliding sleeve (2-11) is slidably matched with the screw rod. An installation support (2-12) is provided at the lower end of the screw rod. The installation support (2-12) is fixedly connected to the inner cylinder (2-2). The upper end of the screw rod is connected to a screw rod driving motor (2-7). The screw rod driving motor (2-7) is fixedly connected to the inner wall of the inner cylinder (2-2) through a motor support (2-8). The lifting sliding sleeve (2-11) is connected to the sampling claw (2-15) through a second driving rope. A through hole for the second driving rope to pass through is provided on the inner cylinder (2-2).

3. The Mars sampling device according to claim 2, characterized in that Guide wheels (2-9) are symmetrically arranged circumferentially along the lifting sliding sleeve (2-11). Guide grooves adapted to the guide wheels (2-9) are provided on the inner wall of the inner cylinder (2-2).

4. The Mars sampling device according to claim 1, characterized in that The sampling claw (2-15) includes a claw body. The claw body is in the shape of a bent rod. The upper end of the claw body is connected to the connecting disk (2-14). A claw head is provided at the lower end of the claw body.

5. The Mars sampling device according to claim 4, characterized in that The claw head is hemispherical. The maximum outer diameter of the claw head is greater than the outer diameter of the claw body.

6. The Mars sampling device according to claim 5, characterized in that The number of the sampling claws (2-15) is several. The several sampling claws (2-15) are evenly distributed circumferentially along the connecting disk (2-14).

7. The Mars sampling device according to claim 1, characterized in that The inner and outer cylinder telescopic driving mechanism includes a chute and a slider. The chute is arranged axially on the outer cylinder (2-1). The slider is arranged at the upper end of the outer wall of the inner cylinder (2-2) and extends into the chute. The slider and the chute are mutually matched. The slider is connected with an inner cylinder driving device.

8. The Mars sampling device according to claim 7, characterized in that The inner cylinder driving device includes a driving wheel (2-4). The driving wheel (2-4) is arranged at the upper end of the outer cylinder (2-1). A telescopic driving motor (2-3) is connected to the end side of the driving wheel (2-4). The driving wheel (2-4) is wound with a first driving rope (2-6) around a rope wheel (2-5). The rope wheel (2-5) is arranged at the lower end of the outer cylinder (2-1).

9. A Mars aircraft, characterized in that It includes an aircraft body and the Mars sampling device described in any one of claims 1-8, and the top of the outer cylinder (2-1) of the Mars sampling device is fixedly connected to the bottom of the Mars aircraft body.

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