Adjustable impact unit suitable for different earth surfaces

Abstract

The invention discloses an adjustable impact unit suitable for different earth surfaces, and relates to the field of seismic exploration, the adjustable impact unit comprises an impact part, a base, a side wing assembly and a rear end assembly, the top of the impact part is of a horizontal plane structure, the bottom of the impact part is of an arc-shaped structure, the impact part is used for making contact with the earth surfaces to excite seismic waves, and the whole base is of an inverted-T-shaped structure; the impact part is installed at the bottom of the base, the side wing assembly is of an annular sheet-shaped structure, is installed above the impact part and surrounds the outer portion of the base, and the rear end assembly is installed above the base and is combined with the side wing assembly and the impact part to form a water-drop-shaped structural body. The device is used in cooperation with an unmanned aerial vehicle seismic source system, the whole device is of a drop-shaped structure, and the falling resistance of the impact unit can be greatly reduced.

Description

Technical Field

[0001] The invention belongs to the field of seismic exploration and geological survey, and in particular relates to an adjustable impact unit suitable for different ground surfaces. Background Art

[0002] Seismic exploration technology based on the release of seismic sources by unmanned aerial vehicles has been widely developed and applied. UAV seismic sources can reach various complex terrain areas and complete seismic wave excitation. Referring to the Chinese invention patent with authorization announcement number CN110697042A, the basic working principle of the UAV seismic source is to release an impact unit from a high altitude through a UAV, and the impact unit impacts the target area on the surface to achieve seismic wave excitation. Part of the energy of a single impact of the UAV seismic source is converted into elastic waves, part is consumed by penetration resistance (for soft surfaces), and / or part is consumed by rebound kinetic energy (for hard surfaces). Among them, only elastic waves are effectively output as seismic wave firing, and excessive consumption of penetration resistance and rebound kinetic energy will lead to a reduction in the effective output of the UAV seismic source.

[0003] In the prior art, the shape of the UAV seismic source impact unit is generally spherical or cubic. There will be a large air resistance during the falling process, so the kinetic energy of the impact unit will be consumed in the falling process. If it is necessary to ensure sufficient kinetic energy to generate a predetermined shock wave, the falling height of the impact unit needs to be increased, which will easily cause position deviation during the falling process. In addition, the shape of the existing UAV seismic source impact unit is generally fixed, so it cannot be adjusted and adapted to different surface environments. This results in the existing impact unit having a high rebound energy consumption when used in some hard surface environments, which reduces the effective output (elastic wave) of the UAV seismic source and also generates multiple excitation interferences; and when used in some soft surface environments, the penetration resistance energy consumption is high, which not only reduces the effective output of the UAV seismic source, but also leads to a large penetration depth and difficulty in recovering the impact unit. Summary of the invention

[0004] The purpose of the present invention is to propose an adjustable impact unit suitable for different surfaces. The device is used in conjunction with a drone seismic source system. The overall structure is a teardrop-shaped structure, which can greatly reduce the resistance of the impact unit when it falls, and the impact part is detachable as a whole. Therefore, the impact part can be replaced with different models as needed to adapt to surface conditions of various hardnesses.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] An adjustable impact unit suitable for different ground surfaces comprises an impact part, a base, a side wing assembly and a rear end assembly, wherein the top of the impact part adopts a horizontal plane structure, and the bottom adopts an arc structure, the impact part is used to contact with the ground surface to impact and excite seismic waves, the base is an inverted "T"-shaped structure as a whole, the impact part is installed at the bottom of the base, the side wing assembly adopts an annular sheet structure, is installed above the impact part, and surrounds the outside of the base, the rear end assembly is installed above the base, and is combined with the side wing assembly and the impact part to form a teardrop-shaped structure.

[0007] As a further description of the above technical solution: the impact part adopts a hollow structure with a cavity inside, the cavity is filled with filler, and the top of the impact part is provided with a filling port for loading or removing the filler into or out of the cavity.

[0008] As a further description of the above technical solution: a rotary plug is installed at the top center of the impact part, and a rotary hole adapted to the rotary plug is correspondingly opened at the bottom center of the base, and the rotary plug is detachably screwed into the rotary hole through a threaded structure.

[0009] As a further description of the above technical solution: the base includes a bottom plate and a lower section of a center rod installed at a central position above the bottom plate, the side wing assembly includes two impact-resistant side wings and two corresponding side wing shape adjusters, wherein the two impact-resistant side wings are wrapped around the upper edge of the bottom plate and are movably connected to the bottom plate through movable hinges, a side wing connecting plate is provided on the inner side of the impact-resistant side wing, one end of the side wing shape adjuster is movably mounted on the side wing connecting plate, and the other end is movably mounted on the lower section of the center rod.

[0010] As a further description of the above technical solution: the rear-end component includes a flexible blade, a blade connector and an upper section of the center rod, wherein a connecting buckle is installed at the bottom of the upper section of the center rod, and the bottom of the upper section of the center rod is connected to the top of the lower section of the center rod through the connecting buckle, and a total of multiple flexible blades are provided, which are evenly distributed on the periphery of the upper section of the center rod and are movably connected through the blade connector; wherein the flexible blade is a fan-shaped blade made of flexible material, and multiple blades are pressed down on each other one by one; wherein the blade connector adopts a circular ring structure, which is movably sleeved on the upper section of the center rod, and a blade connecting rod is installed on the inner side of the flexible blade, and a plurality of limiting holes are opened on the surface of the blade connector in a one-to-one correspondence, and the blade connecting rod is movably assembled on the blade connector through the limiting holes.

[0011] As a further description of the above technical solution: a fixing plate is also installed on the upper section of the central rod, and a blade adjuster is installed between the fixing plate and the blade connector.

[0012] As a further description of the above technical solution: the upper edge of the impact-resistant side wing is provided with a side wing blade limiting portion, and the side wing blade limiting portion extends in a streamlined shape along the outer edge of the impact-resistant side wing.

[0013] As a further description of the above technical solution: the rear end assembly also includes a plurality of tail wings, which are distributed in a circular array and installed at the upper edge of the upper section of the central rod to ensure the flight stability of the impact unit.

[0014] As a further description of the above technical solution: a hanging ring is installed on the top of the upper section of the central rod, which is used to suspend and connect the impact unit to the drone.

[0015] As a further description of the above technical solution: an internal thread structure is provided on the inner side of the connecting buckle, and an external thread structure is provided on the top of the lower section of the center rod, and the connecting buckle is screwed onto the top of the lower section of the center rod through the cooperation of the internal thread structure and the external thread structure; a plurality of connecting slots of different heights are radially opened on the outer walls of the upper section of the center rod and the lower section of the center rod, and the upper section of the center rod and the lower section of the center rod are pinned together by inserting connecting pins into the connecting slots of corresponding heights.

[0016] In the above technical scheme, the present invention provides an adjustable impact unit suitable for different surfaces. The device is used in conjunction with a drone seismic source system. The overall structure is a teardrop-shaped structure, which can greatly reduce the resistance of the impact unit when it falls, and the impact part is detachable as a whole. Therefore, the impact part can be replaced with different models as needed to adapt to surface conditions of various hardnesses. The impact part of the device adopts a hollow structure with a cavity inside, and the cavity is filled with filler. A filling port for loading or removing filler from the cavity is provided on the top of the impact part. Therefore, the weight of the impact unit can be adjusted by adding filler. At the same time, this powder filler has the effect of reducing or preventing repeated impacts. The impact-resistant flanks in the device can be controlled and adjusted by flank shape regulators. Therefore, when used in different surface environments, their shapes can be adjusted according to actual needs. The shape can be controlled and adjusted, that is, when applied on a hard surface, the anti-impact side wing can be adjusted to form a shape with a smaller diameter, and when applied on a soft surface, the anti-impact side wing can be adjusted to form a shape with a larger diameter, so as to reduce the energy consumption of the penetration resistance and reduce the penetration depth for easy recovery; a blade adjuster is installed on the inner side of the flexible blade in the device, and the shape of the flexible blade can be changed by the blade adjuster, so that it can cooperate with the anti-impact side wing at the bottom to form a water drop-shaped structure, thereby ensuring the streamline and aerodynamic characteristics of the impact unit and reducing the resistance of the impact unit when falling, and the upper edge of the anti-impact side wing is provided with a side wing blade limiting part, which extends in a streamlined shape along the outer edge of the anti-impact side wing, and the position of the rear end flexible blade can be limited by the side wing blade limiting part to prevent the flexible blade from spreading and destroying the aerodynamic properties of the impact unit. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 A schematic diagram of the overall structure of an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0019] Figure 2 A schematic diagram of a base structure of an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0020] Figure 3 A schematic diagram of the structure of an impact part of an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0021] Figure 4A schematic diagram of the installation structure of a wing assembly in an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0022] Figure 5 A schematic diagram of a top view installation structure of a wing assembly in an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0023] Figure 6 A schematic diagram of the structure of the rear end component of an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0024] Figure 7 A schematic diagram of a flexible blade installation structure in an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0025] Figure 8 A schematic diagram of a connecting buckle structure in an adjustable impact unit suitable for different ground surfaces provided by the present invention;

[0026] Fig. 9 A schematic diagram of the structure of the connection slot opening position in an adjustable impact unit suitable for different ground surfaces provided by the present invention.

[0027] Description of the drawings: 1. Rear end assembly; 101. Tail wing; 102. Hanging ring; 103. Blade connector; 104. Flexible blade; 105. Blade adjuster; 106. Fixing plate; 107. Connecting buckle; 1071. Internal thread structure; 108. Upper section of center rod; 1081. Connecting pin; 109. Blade connecting rod; 110. Limiting hole; 2. Side wing assembly; 201. Side wing shape adjuster; 202. Side wing blade limiting part; 203. Impact-resistant side wing; 204. Side wing connecting plate; 3. Base; 301. Bottom plate; 302. Active hinge; 303. Lower section of center rod; 3031. External thread structure; 3032. Connecting slot; 304. Rotary plug hole; 4. Impact part; 401. Rotary plug column; 402. Filling material; 403. Cavity; 404. Filling port. DETAILED DESCRIPTION

[0028] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0029] This embodiment provides an adjustable impact unit suitable for different ground surfaces, such as Figures 1 to 9As shown, it includes an impact part 4, a base 3, a side wing assembly 2 and a rear end assembly 1, wherein the top of the impact part 4 adopts a horizontal plane structure, and the bottom adopts an arc structure, the impact part 4 is used to contact with the surface to impact and excite seismic waves, the base 3 is an inverted "T"-shaped structure as a whole, the impact part 4 is installed at the bottom of the base 3, the side wing assembly 2 adopts an annular sheet structure, is installed above the impact part 4, and surrounds the outside of the base 3, the rear end assembly 1 is installed above the base 3, and is combined with the side wing assembly 2 and the impact part 4 to form a teardrop-shaped structure.

[0030] Specifically, the shape of the existing UAV seismic source impact unit is generally a spherical or rectangular solid metal structure. During the falling process, there is a large air resistance, which leads to the problem that if the UAV seismic source impact unit needs to ensure sufficient kinetic energy to generate a predetermined shock wave, the falling height of the impact unit needs to be increased. Based on this technical problem, in this embodiment, the overall shape of the impact unit is set to a water drop-shaped structure, which can reduce the falling air resistance and more accurately control the landing point. Specifically, the impact part 4 is the part that contacts and collides with the ground surface, and it impacts the ground surface at the moment of impact to excite seismic waves. The base 3 is located in the middle of the impact unit, and serves as a carrier for components such as the impact part 4, the side wing assembly 2 and the rear end assembly 1, integrating the components into a whole; the side wing assembly 2 and the impact part 4 are combined on the base 3 in an adjustable fixed manner, and form a water drop-shaped shape through cooperation. In actual application, the device is suspended under the drone through the rear-end component 1 and used in conjunction with the drone source system. When it is necessary to trigger seismic waves in the target area, the drone hangs on the impact unit and flies above the target area. It rises to the target height according to the required intensity of the triggered seismic waves, and then releases the impact unit, which falls and impacts the surface, thereby triggering seismic waves. The drone source impact unit in this embodiment adopts a teardrop-shaped structure as a whole, which can greatly reduce the air resistance of the impact unit when it falls, thereby ensuring that it can achieve the energy required for the impact at a lower altitude; at the same time, compared with a spherical or other irregular shape, the teardrop-shaped shape and tail structure have better aerodynamic characteristics, and can obtain a more stable falling trajectory, thereby avoiding the situation where the flight trajectory deviates too much during the falling process, and achieving precise control of the landing point.

[0031] As an optional embodiment, the impact part 4 has a hollow structure with a cavity 403 inside, the cavity 403 is filled with a filler 402, and a filling port 404 for loading or removing the filler 402 into or out of the cavity 403 is opened on the top of the impact part 4.

[0032] Specifically, in order to solve the problem that the impact part 4 in the prior art adopts a solid metal structure and is prone to multiple rebounds and interference excitation during impact, the impact part 4 in this embodiment adopts a hollow structure with a cavity 403 inside, and the cavity 403 is filled with a filler 402, so that when the impact part 4 contacts the surface, the filler 402 can play an effect of reducing or preventing the rebound and repeated impact caused by rigid collision in the cavity 403, thereby reducing the excitation of interfering seismic waves. Further, in order to ensure the effect of the impact part 4 in suppressing rebound, a filling port 404 for loading or removing the filler 402 into the cavity 403 is opened on the top of the impact part 4. The filler 402 adopts high-density metal powder and sand and stone abrasive particles, and the filler 402 can be added according to the weight of the impact unit. Among them, the powder filler is used to adjust the weight of the impact unit on the one hand to control the intensity of the seismic wave, and on the other hand, it also has the effect of reducing or preventing repeated impacts caused by rebound, avoiding the interference of seismic waves generated by repeated impacts on the measurement.

[0033] As an optional embodiment, a screw plug post (401) is installed at the top center of the impact portion (4), and a screw plug hole (304) adapted to the screw plug post (401) is correspondingly opened at the bottom center of the base (3), and the screw plug post (401) is detachably screwed into the screw plug hole (304) through a threaded structure.

[0034] Specifically, in order to adapt to different target area surface environments (for example, a hard surface requires a more pointed impact part 4, while a soft surface requires a flatter impact part 4), the present embodiment provides multiple models of impact parts 4, and the impact surfaces of different models of impact parts 4 have different shapes and sizes (or volumes), so as to be used to adapt to different surface environments. A screw-in column 401 is installed at the top center of the impact part 4, and a screw-in hole 304 adapted to the screw-in column 401 is correspondingly provided at the bottom center of the base 3. The screw-in column 401 is detachably screwed into the screw-in hole 304 through a threaded structure. Accordingly, the impact part 4 in the impact unit can be replaced with different models separately, connected to the base 3 and other parts of the rear-end component 1, so that it can adapt to the corresponding surface environment.

[0035] As an optional embodiment, the base 3 includes a bottom plate 301 and a center rod lower section 303 installed at a central position above the bottom plate 301, and the side wing assembly 2 includes two impact-resistant side wings 203 and two corresponding side wing shape adjusters 201, wherein the two impact-resistant side wings 203 are wrapped around the upper edge of the bottom plate 301 and are movably connected to the bottom plate 301 through a movable hinge 302, and a side wing connecting plate 204 is provided on the inner side of the impact-resistant side wing 203, one end of the side wing shape adjuster 201 is movably installed on the side wing connecting plate 204, and the other end is movably installed on the center rod lower section 303.

[0036] Specifically, in order to enable the side wing assembly 2 in the impact unit to adapt to the impact part 4 to form a water drop-shaped structure and reduce the falling resistance when installing different types of impact parts 4, the present embodiment also provides a base 3 and a side wing assembly 2 for use together, which can adjust the external structure of the impact unit, thereby achieving adaptation with the impact part 4. Among them, the side wing shape adjuster 201 adopts an electric telescopic rod or a pneumatic telescopic rod. Such a structural setting makes it possible for the side wing shape adjuster 201 to push the two anti-impact side wings 203 to expand outward when it is extended, and vice versa, when the side wing shape adjuster 201 is contracted, it pushes the two anti-impact side wings 203 to fold inward, thereby achieving the shape adjustment of the anti-impact side wings 203. Among them, the hard surface can adjust the anti-impact side wings 203 to form a shape with a smaller diameter, and the soft surface can adjust the anti-impact side wings 203 to form a shape with a larger diameter, thereby reducing the energy consumption of the penetration resistance and reducing the penetration depth for easy recovery. Furthermore, the impact-resistant side wings 203 can be made of two symmetrical streamlined curved surface components made of hard alloy, with different models having different diameters and shapes, and connected to the side wing connecting plate 204 through a bolt structure, so as to achieve joint impact with the impact part 4 on the ground.

[0037] As an optional embodiment, in order to adapt to the side wing components 2 with different expansion degrees, so that the rear end component 1 can adapt to the side wing components 2 and the impact part 4 in the impact unit to form a water drop-shaped structure and reduce the falling resistance, the rear end component 1 in this embodiment includes a flexible blade 104, a blade connector 103 and a center rod upper section 108, wherein a connecting buckle 107 is installed at the bottom of the center rod upper section 108, and the bottom of the center rod upper section 108 is connected to the top of the center rod lower section 303 through the connecting buckle 107, so that the bottom of the center rod upper section 108 and the center rod lower section 303 are assembled to form a retractable rod structure, and a plurality of flexible blades 104 are provided, which are evenly distributed on the periphery of the center rod upper section 108 and are movably connected through the blade connector 103. Among them, the flexible blade 104 is a fan-shaped blade made of flexible material, with a polished surface, which can be telescopically adjusted, and multiple blades press each other down one by one. The blade connector 103 adopts a circular ring structure and is movably sleeved on the upper section 108 of the center rod. A blade connecting rod 109 is installed on the inner side of the flexible blade 104. A plurality of corresponding limiting holes 110 are opened on the surface of the blade connector 103. The blade connecting rod 109 is movably assembled on the blade connector 103 through the limiting holes 110.

[0038] As an optional embodiment, a fixing plate 106 is also installed on the upper section 108 of the center rod, and a blade adjuster 105 is installed between the fixing plate 106 and the blade connector 103. Such a structural arrangement enables the blade connector 103 to move up and down when the blade adjuster 105 is in operation, so that the flexible blade 104 expands outward or contracts inward, so that it cooperates with the side wing assembly 2 and the impact part 4 to form a teardrop-shaped structure, thereby ensuring the streamlined shape and aerodynamic characteristics of the impact unit and reducing the resistance of the impact unit when it falls. Specifically, the blade adjuster 105 adopts an electric telescopic rod or a pneumatic telescopic rod.

[0039] As an optional embodiment, in order to prevent the lower mouth of the flexible blade 104 from spreading out and destroying the aerodynamic properties of the impact unit, in this embodiment, the upper edge of the impact-resistant side wing 203 has a side wing blade limiting portion 202, and the side wing blade limiting portion 202 extends in a streamlined shape along the outer edge of the impact-resistant side wing 203 to limit the position of the rear end flexible blade 104 and prevent the flexible blade 104 from spreading out and destroying the aerodynamic properties of the impact unit.

[0040] As an optional embodiment, in order to ensure the flight stability of the impact unit during the falling process, the rear end assembly 1 also includes a plurality of tail wings 101, which are distributed in a circular array and installed at the upper edge position of the upper section 108 of the center rod, so as to ensure the flight stability of the impact unit.

[0041] As an optional embodiment, a hanging ring 102 is installed on the top of the upper section 108 of the central rod, which is used to suspend and connect the impact unit to the drone.

[0042] As an optional embodiment, in order to achieve a detachable connection between the base 3 and the rear end component 1, an internal thread structure 1071 is provided on the inner side of the connecting buckle 107 in this embodiment, and an external thread structure 3031 is provided on the top of the lower section 303 of the center rod. The connecting buckle 107 is screwed onto the top of the lower section 303 of the center rod through the cooperation of the internal thread structure 1071 and the external thread structure 3031.

[0043] As an optional embodiment, in order to adjust the height of the entire impact unit so that the entire impact unit can form a teardrop-shaped structure, in this embodiment, the outer walls of the upper section 108 of the center rod and the lower section 303 of the center rod are radially provided with a plurality of connecting slots 3032 of different heights. The upper section 108 of the center rod and the lower section 303 of the center rod are pinned together by inserting the connecting pins 1081 into the connecting slots 3032 of corresponding heights. After the upper section 108 of the center rod and the lower section 303 of the center rod are pinned together, the connecting buckle 107 is rotated to cover the connecting pin 1081. The outer end of 081 can prevent the connecting pin 1081 from falling off, thereby ensuring the connection between the upper section 108 of the center rod and the lower section 303 of the center rod. This structural setting makes it possible to adjust the effective length of the upper section 108 of the center rod and the lower section 303 of the center rod by first rotating the connecting buckle 107 to expose the connecting pin 1081, and then changing the connecting slot 3032 of the corresponding height for inserting the connecting pin 1081. The operation is convenient and quick, and the height adjustment of the entire impact unit is realized, thereby improving the applicability of the device.

[0044] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. An adjustable impact unit suitable for different ground surfaces, characterized in that: include: The impact part (4) has a horizontal plane structure at the top and an arc-shaped structure at the bottom, and the impact part (4) is used to contact the ground surface to impact and excite seismic waves; The base (3) is in an inverted "T"-shaped structure as a whole, and the impact part (4) is installed at the bottom of the base (3); A wing assembly (2) which is an annular sheet structure, installed above the impact portion (4) and surrounding the outside of the base (3); The rear end assembly (1) is installed above the base (3) and is combined with the side wing assembly (2) and the impact part (4) to form a water drop-shaped structure.

2. The adjustable impact unit suitable for different ground surfaces according to claim 1, characterized in that: The impact part (4) adopts a hollow structure with a cavity (403) inside, the cavity (403) is filled with a filling material (402), and a filling port (404) for loading or removing the filling material (402) into or from the cavity (403) is provided at the top of the impact part (4).

3. An adjustable impact unit suitable for different ground surfaces according to any one of claims 1-2, characterized in that: A screw-in post (401) is installed at the top center of the impact portion (4), and a screw-in hole (304) adapted to the screw-in post (401) is correspondingly opened at the bottom center of the base (3), and the screw-in post (401) is detachably screwed into the screw-in hole (304) via a threaded structure.

4. The adjustable impact unit suitable for different ground surfaces according to claim 1, characterized in that: The base (3) comprises a bottom plate (301) and a center rod lower section (303) installed at a central position above the bottom plate (301); the side wing assembly (2) comprises two impact-resistant side wings (203) and two corresponding side wing shape adjusters (201); wherein the two impact-resistant side wings (203) are wrapped around the upper edge of the bottom plate (301) and are movably connected to the bottom plate (301) via a movable hinge (302); a side wing connecting plate (204) is provided on the inner side of the impact-resistant side wing (203); one end of the side wing shape adjuster (201) is movably installed on the side wing connecting plate (204), and the other end is movably installed on the center rod lower section (303).

5. The adjustable impact unit suitable for different ground surfaces according to claim 4, characterized in that: The rear end assembly (1) comprises a flexible blade (104), a blade connector (103) and a center rod upper section (108), wherein a connecting buckle (107) is installed at the bottom of the center rod upper section (108), and the bottom of the center rod upper section (108) is connected to the top of the center rod lower section (303) through the connecting buckle (107), and a plurality of flexible blades (104) are provided, which are evenly distributed on the periphery of the center rod upper section (108) and are movably connected through the blade connector (103); The flexible blades (104) are fan-shaped blades made of flexible material, and a plurality of the blades press down on each other one by one. The blade connector (103) is annular in structure and is movably sleeved on the upper section (108) of the center rod. A blade connecting rod (109) is installed on the inner side of the flexible blade (104). A plurality of limiting holes (110) are correspondingly provided on the surface of the blade connector (103). The blade connecting rod (109) is movably assembled on the blade connector (103) through the limiting holes (110).

6. The adjustable impact unit suitable for different ground surfaces according to claim 5, characterized in that: A fixing plate (106) is also installed on the upper section (108) of the central rod, and a blade adjuster (105) is installed between the fixing plate (106) and the blade connector (103).

7. The adjustable impact unit suitable for different ground surfaces according to claim 6, characterized in that: The upper edge of the impact-resistant side wing (203) is provided with a side wing blade limiting portion (202), and the side wing blade limiting portion (202) extends in a streamlined shape along the outer edge of the impact-resistant side wing (203).

8. The adjustable impact unit suitable for different ground surfaces according to claim 7, characterized in that: The rear end assembly (1) also includes a plurality of tail wings (101) which are distributed in a circular array and installed at the upper edge of the upper section (108) of the central rod to ensure the flight stability of the impact unit.

9. The adjustable impact unit suitable for different ground surfaces according to claim 8, characterized in that: A hanging ring (102) is installed on the top of the upper section (108) of the central rod, which is used to suspend and connect the impact unit to the drone.

10. The adjustable impact unit suitable for different ground surfaces according to claim 9, characterized in that: The inner side of the connecting buckle (107) is provided with an internal thread structure (1071), and the top of the lower section (303) of the central rod is provided with an external thread structure (3031), and the connecting buckle (107) is screwed onto the top of the lower section (303) of the central rod through the cooperation of the internal thread structure (1071) and the external thread structure (3031); The outer walls of the upper section (108) and the lower section (303) of the central rod are radially provided with a plurality of connecting slots (3032) of different heights. The upper section (108) and the lower section (303) of the central rod are pin-connected by inserting connecting pins (1081) into the connecting slots (3032) of corresponding heights.

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