Small penetrator for penetration detection of subsurface of planet

Abstract

The invention discloses a small penetrator for planet subsurface penetration detection and a working method of the small penetrator. The penetrator structurally comprises a penetration buffer module, a spring power module, an unlocking positioning module and a communication antenna spiral unfolding module. During locking, the bottom bulge of the antenna frame is positioned in the T-shaped groove; during unlocking, under the driving of the motor, the antenna frame is screwed out of the T-shaped groove, under the action of the spring power module, the unlocking positioning module is driven to ascend along the inner wall of the penetrator, and when the antenna frame reaches a designated position, positioning is achieved through the positioning pin. Precise throwing is carried out through a landing detector or a surrounding device, in-situ detection is carried out on the subsurface soil of the planet, the device has the advantages of being compact in structure, small in weight, low in cost, high in reliability and the like, and the task requirement for penetration detection of the subsurface soil of the planet is met.

Description

Technical Field

[0001] The present invention relates to the technical field of kinetic penetration detection for deep space exploration missions, and in particular to a small penetrator for planetary subsurface penetration detection and a working method thereof. Background Art

[0002] As a means of celestial body exploration, high-speed impact penetration detection has the following main advantages compared with orbital detection and lander detection: low energy demand, relatively cheap cost, more effective penetration into the interior of celestial bodies, and the ability to achieve a single launch with multiple impacts to form a detection or communication network.

[0003] During the impact process, the penetrator is required to effectively penetrate the medium to a certain depth, while also ensuring that the payload and detection equipment it carries are not damaged. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention provides a small penetrator for planetary subsurface penetration detection and a working method thereof, which can not only effectively penetrate the medium while protecting the internal payload, but also complete the task of raising and deploying the communication antenna.

[0005] The present invention provides a small-sized penetrator for planetary subsurface penetration detection, comprising a shell, a penetration buffer module, a spring power module, an unlocking and positioning module, and a communication antenna spiral expansion module.

[0006] The spring power module comprises a spring frame and a spring cover connected by a spring group, and the spring frame is fixedly connected to the middle part of the housing.

[0007] The penetration buffer module includes a warhead, an aluminum honeycomb, a load compartment, and a compression spring armor. The compression spring armor is installed between the load compartment and the spring frame. The load compartment is connected to the warhead through the aluminum honeycomb, and the warhead is fixedly connected to the bottom of the shell.

[0008] The unlocking and positioning module includes a motor seat, a bearing sleeve, a motor, a motor end cover, a bearing A, a positioning pin, a compression spring D, a bearing end cover, a connecting shaft, and an antenna frame. The motor is fixed in the motor seat through the motor end cover, and the motor is connected to the connecting shaft. The outer edge of the connecting shaft is sleeved with bearing A, and the connecting shaft and bearing A are installed in the bearing sleeve; the motor seat and the bearing sleeve are all surrounded by grooves, and positioning pins and compression spring D are installed in the grooves. A groove matching the positioning pin is provided in the middle of the inner wall of the shell, and a positioning hole A and a positioning hole B matching the positioning pin are provided above the inner wall of the shell; the connecting shaft is connected to the antenna frame, a protrusion B is provided at the bottom of the antenna frame, and a T-slot matching the protrusion B is provided on the inner wall of the shell.

[0009] The communication antenna spiral expansion module includes an antenna frame, an outer spiral tube, a communication antenna, a supporting short rod, a rising nut, and a bearing B, wherein the antenna frame, the outer spiral tube, and the rising nut are nested and connected in sequence from the inside to the outside, and a bearing B is installed between the outer spiral tube and the antenna frame. The communication antenna is installed on the antenna frame and connected to the rising nut through the supporting short rod. The top of the communication antenna is riveted to the antenna frame, and the supporting short rod is riveted to the rising nut.

[0010] As a further improvement, an annular groove and a locking groove are provided on the top of the shell, a protrusion B on the bottom of the antenna frame cooperates with the annular groove, and a protrusion A is provided on the bottom of the outer spiral tube, and the protrusion A cooperates with the locking groove.

[0011] As a further improvement, in the communication antenna spiral expansion module, the communication antennas and the supporting short rods are symmetrically distributed in six groups to form an umbrella-like structure.

[0012] As a further improvement, in the spiral expansion module of the communication antenna, a protrusion is designed at the end of the upper thread of the external threaded tube to limit the rise of the rising nut and thus limit the expansion angle of the communication antenna. The maximum angle between the communication antenna and the external threaded tube is 120°.

[0013] The present invention also provides a working method of a small penetrator for planetary subsurface penetration detection, which uses the small penetrator for planetary subsurface penetration detection, including a locked state, an unlocked state, and a penetration state of the penetrator. In the locked state, the protrusion B at the bottom of the antenna frame is stuck in the T-slot, limiting the radial movement of the communication antenna spiral expansion module along the penetrator housing, and the spring in the spring power module is in a compressed state; In the unlocked state, the motor drives the connecting shaft to transmit power to the antenna frame, and the antenna frame rotates in the annular groove and rotates out of the T-slot. At this time, the spring group in the spring power module releases energy to push the entire module upward, and the antenna frame drives the communication antenna, the supporting short rod and the rising nut to rotate relative to the outer spiral tube. The rising nut rises along the outer spiral tube, and the communication antenna is deployed; after the unlocked positioning module reaches the specified position, the positioning pin pops outward under the action of the compressed spring D and is inserted into the positioning hole A and the positioning hole B to achieve positioning; When the penetrator is in the penetration state, the inside of the payload compartment penetrator shell moves downward, compressing the aluminum honeycomb and remaining still under the action of the compression spring armor, thus achieving the purpose of buffering and shock absorption.

[0014] Further improvement, in the unlocked state, when the rising nut rises to a certain height, the communication antenna unfolds to a certain angle, and the protrusion at the end of the upper thread of the external threaded tube limits the rise of the rising nut and thus limits the unfolding angle of the communication antenna. The angle between the communication antenna and the external threaded tube is taken as the basis, and the maximum unfolding angle of the communication antenna is 120°. The motor reverses to reduce the unfolding angle of the communication antenna, thereby realizing the adjustment of the unfolding angle of the communication antenna.

[0015] The beneficial effects of the present invention are: 1. It can not only effectively penetrate the medium while protecting the internal payload, but also complete the task of raising and deploying the communication antenna.

[0016] 2. It has the advantages of compact structure, light weight, low cost and high reliability, and can meet the needs of planetary subsurface soil penetration detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the penetration buffer module and the spring power module; Figure 3 It is a schematic diagram of the cross-sectional structure of the unlocking and positioning module; Figure 4 It is a partial cross-sectional structural schematic diagram of the spiral expansion module of the communication antenna; Figure 5 for Figure 4 A schematic diagram of the structure of part A in the middle; Figure 6 for Figure 4 A schematic diagram of the structure of part B in the middle; Figure 7 It is a schematic diagram of a partial cross-sectional structure of the unlocking positioning module located at the positioning position after being unlocked and raised; Figure 8 It is a schematic diagram of a partial cross-sectional structure when the spiral deployment module of the communication antenna is not unlocked; Fig. 9 It is a schematic diagram of the cross-sectional structure of the penetrator part after the communication antenna is deployed; Fig.10 Schematic diagram of the cross-sectional structure of the penetrator housing; The corresponding markings in the accompanying drawings are: Aluminum honeycomb 1, load compartment 2, motor seat 3, bearing sleeve 4, external threaded pipe 5, communication antenna 6, antenna frame 7, penetrator housing 8, warhead 9, aluminum honeycomb lower cover 10, aluminum honeycomb upper cover 11, compression spring A 12, compression spring B 13, compression spring C 14, spring cover 15, spring frame 16, connecting shaft 17, bearing end cover 18, bearing A 19, locating pin 20, compression spring D 21, motor end cover 22, motor 23, bearing B 24, rivet A 25, supporting short rod 26, rising nut 27, rivet B 28, protrusion A 51, connecting groove 71, protrusion B 72, locking groove 81, annular groove 82, positioning hole A 83, T-slot 84, positioning hole B 85, ​​groove 86, connecting hole A 87, connecting hole B 88, connecting hole C 91, connecting hole D 161. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, the main components of the present invention are: a warhead 9, an aluminum honeycomb 1, a payload compartment 2, a motor base 3, a bearing sleeve 4, an externally threaded tube 5, a communication antenna 6, an antenna frame 7, and a penetrator housing 8.

[0021] Cushioning and shock absorption of payload.

[0022] like Figure 1 and Figure 2 and Fig.10 As shown, the penetration buffer module is composed of a warhead 9, an aluminum honeycomb 1, a load compartment 2, a compression spring A 12, an aluminum honeycomb upper cover 11, and an aluminum honeycomb lower cover 10. A connection hole 91 is opened on the warhead 9, and the outer shell 8 is connected to the connection hole B 88 and the connection hole C 91 on the warhead 9 by screws. The compression spring A 12 is installed between the load compartment 2 and the spring frame 16. During the penetration of the penetrator, the load compartment 2 moves downward inside the penetrator shell, compressing the aluminum honeycomb 1, and remains stationary under the action of the compression spring A 12, thereby achieving the purpose of buffering and shock absorption.

[0023] Unlock, raise and position the unlocking and positioning module.

[0024] like Figure 2 and Fig.10 As shown, the spring power module is composed of a compression spring B 13, a compression spring C 14, a spring frame 16, and a spring cover 15. The spring frame 16 and the housing 8 are respectively provided with a connecting hole D 161 and a connecting hole A 87 for connecting the two.

[0025] like Figure 3 , Figure 7 and Figure 8 As shown, the unlocking and positioning module is composed of a motor base 3, a bearing sleeve 4, a motor 23, a motor end cover 22, a bearing armor 19, a positioning pin 20, a compression spring Ding 21, a bearing end cover 18, a connecting shaft 17, and an antenna frame 7. The motor 23 is installed in the motor base 3 and fixed by the motor end cover 22. The connecting shaft 17 is installed in the bearing sleeve 4 and matches with the inner ring of the bearing armor 19. The motor base 3 and the bearing sleeve 4 are all grooved around. The positioning pin 20 and the compression spring Ding 21 are installed inside the protrusion. The protrusion matches with the groove 86 opened on the housing 8 to ensure that the entire module rises smoothly. The connecting groove 71 of the antenna frame 7 matches with the connecting shaft 17. When unlocked, the protrusion B 72 at the bottom of the antenna frame 7 is stuck in the T-slot 84. When the motor 23 is driven, the connecting shaft 17 transmits power to the antenna frame 7, and the antenna frame 7 is rotated out of the T-slot 84. At this time, the spring B 13 and the spring C 14 in the spring power module release energy to push the entire module upward. After the unlocked positioning module reaches the specified position, the positioning pin 20 pops outward under the action of the compression spring D 21 and is stuck in the positioning hole 83 and the positioning hole 85 to achieve positioning.

[0026] Rotational deployment of the communication antenna.

[0027] like Figure 4 The spiral expansion module of the communication antenna shown in the figure is composed of an antenna frame 7, an outer spiral tube 5, a communication antenna 6, a supporting short rod 26, a rising nut 27, and a bearing B 24. The antenna frame 7, the outer spiral tube 5, and the rising nut 27 are nested and connected in order from the inside to the outside, and a bearing B 24 is installed between the outer spiral tube 5 and the antenna frame 7. The communication antenna 6 is installed on the antenna frame 7 and connected to the rising nut 27 through the supporting short rod 26. Figure 5 As shown, the communication antenna 6 and the antenna frame 7 are connected by rivets 25. Figure 6 As shown, the supporting short rod 26 and the rising nut 27 are connected by rivets 28 .

[0028] like Figure 6 and Figure 7 As shown, when the antenna frame 7 reaches a specific position and is positioned under the action of the spring power module, the protrusion 72 at the bottom of the antenna frame 7 cooperates with the annular groove 82, and the protrusion A 51 at the bottom of the outer spiral tube 5 cooperates with the locking groove 81. When the motor 23 is driven, the connecting shaft 17 transmits power to the antenna frame 7. At this time, the antenna frame 7 rotates in the annular groove 82, and the outer spiral tube 5 cannot rotate because the bottom is stuck in the locking groove 81. The antenna frame 7 drives the communication antenna 6, the supporting short rod 26 and the rising nut 27 to rotate relative to the outer spiral tube, and the rising nut 27 rises along the outer spiral tube 5, and the communication antenna is unfolded. The unfolding structure of the communication antenna 6 is shown in FIG. Fig. 9 shown.

[0029] Adjust the deployment angle of the communication antenna.

[0030] After the rising nut 27 rises to a certain height, the communication antenna 6 unfolds to a certain angle. The upper threaded end of the external threaded tube 5 is designed with a protrusion to limit the rise of the rising nut 27 and thus limit the unfolding angle of the communication antenna 6. The angle between the communication antenna 6 and the external threaded tube 5 is taken as the standard. The maximum unfolding angle of the communication antenna 6 is 120°. The motor is reversed to reduce the unfolding angle of the communication antenna 6, thereby realizing the adjustment of the unfolding angle of the communication antenna 6.

[0031] In summary, the present invention provides a small penetrator that can realize the functions of effective load buffering and shock absorption, communication antenna lifting, deployment and angle adjustment. The present invention can be multi-point deployed via a lander or orbiter, has the advantages of compact structure, light weight, low cost, high reliability, etc., and meets the needs of planetary subsurface soil penetration detection.

[0032] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, the above is only a preferred embodiment of the present invention. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field is within the technical scope disclosed by the present invention. For ordinary technicians in the technical field, changes or replacements that can be easily thought of should be covered within the protection scope of the present invention without departing from the principle of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A small penetrator for planetary subsurface penetration detection, characterized in that: It includes a shell, a penetration buffer module, a spring power module, an unlocking and positioning module, and a communication antenna spiral expansion module; The spring power module comprises a spring frame and a spring cover connected by a spring group, and the spring frame is fixedly connected to the middle part of the housing; The penetration buffer module includes a warhead, an aluminum honeycomb, a load compartment, and a compression spring armor, wherein the compression spring armor is installed between the load compartment and the spring frame, the load compartment is connected to the warhead through the aluminum honeycomb, and the warhead is fixedly connected to the bottom of the shell; The unlocking and positioning module includes a motor seat, a bearing sleeve, a motor, a motor end cover, a bearing A, a positioning pin, a compression spring D, a bearing end cover, a connecting shaft, and an antenna frame. The motor is fixed in the motor seat through the motor end cover, and the motor is connected to the connecting shaft. The outer edge of the connecting shaft is sleeved with a bearing A, and the connecting shaft and the bearing A are installed in the bearing sleeve; the motor seat and the bearing sleeve are all surrounded by grooves, and the positioning pins and the compression spring D are installed in the grooves. A groove matching the positioning pin is provided in the middle of the inner wall of the shell, and a positioning hole A and a positioning hole B matching the positioning pin are provided above the inner wall of the shell; the connecting shaft is connected to the antenna frame, a protrusion B is provided at the bottom of the antenna frame, and a T-slot matching the protrusion B is provided on the inner wall of the shell; The communication antenna spiral expansion module includes an antenna frame, an outer spiral tube, a communication antenna, a supporting short rod, a rising nut, and a bearing B, wherein the antenna frame, the outer spiral tube, and the rising nut are nested and connected in sequence from the inside to the outside, and a bearing B is installed between the outer spiral tube and the antenna frame. The communication antenna is installed on the antenna frame and connected to the rising nut through the supporting short rod. The top of the communication antenna is riveted to the antenna frame, and the supporting short rod is riveted to the rising nut.

2. The small penetrator for planetary subsurface penetration detection according to claim 1 is characterized in that: The top of the shell is provided with an annular groove and a locking groove, the protrusion B at the bottom of the antenna frame matches with the annular groove, and the bottom of the outer spiral tube is provided with a protrusion A, which matches with the locking groove.

3. The small penetrator for planetary subsurface penetration detection according to claim 1 is characterized in that: In the communication antenna spiral expansion module, the communication antennas and the supporting short rods are symmetrically distributed in six groups to form an umbrella-like structure.

4. The small penetrator for planetary subsurface penetration detection according to claim 1 is characterized in that: In the spiral expansion module of the communication antenna, a protrusion is designed at the end of the upper thread of the external threaded tube to limit the rise of the rising nut and thus limit the expansion angle of the communication antenna. The maximum angle between the communication antenna and the external threaded tube is 120°.

5. A working method of a small penetrator for planetary subsurface penetration detection, using the small penetrator for planetary subsurface penetration detection according to claim 1, characterized in that: Including locked state, unlocked state and penetration state of the penetrator; In the locked state, the protrusion B at the bottom of the antenna frame is stuck in the T-slot, limiting the radial movement of the communication antenna spiral deployment module along the penetrator housing, and the spring in the spring power module is in a compressed state; In the unlocked state, the motor drives the connecting shaft to transmit power to the antenna frame, and the antenna frame rotates in the annular groove and rotates out of the T-slot. At this time, the spring group in the spring power module releases energy to push the entire module upward, and the antenna frame drives the communication antenna, the supporting short rod and the rising nut to rotate relative to the outer spiral tube. The rising nut rises along the outer spiral tube, and the communication antenna is deployed; after the unlocked positioning module reaches the specified position, the positioning pin pops outward under the action of the compressed spring D and is inserted into the positioning hole A and the positioning hole B to achieve positioning; When the penetrator is in the penetration state, the inside of the payload compartment penetrator shell moves downward, compressing the aluminum honeycomb and remaining still under the action of the compression spring armor, thus achieving the purpose of buffering and shock absorption.

6. The working method of the small penetrator for planetary subsurface penetration detection according to claim 5 is characterized in that: In the unlocked state, when the rising nut rises to a certain height, the communication antenna unfolds to a certain angle, and the protrusion at the end of the upper thread of the external threaded tube limits the rise of the rising nut and thus limits the unfolding angle of the communication antenna. The angle between the communication antenna and the external threaded tube is taken as the basis, and the maximum unfolding angle of the communication antenna is 120°. The motor reverses to reduce the unfolding angle of the communication antenna, thereby realizing the adjustment of the unfolding angle of the communication antenna.

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