Unmanned aerial vehicle vibration reduction support for geographic surveying and mapping

Abstract

An unmanned aerial vehicle vibration reduction support for geographical surveying and mapping relates to the technical field of geographical surveying and mapping unmanned aerial vehicles and comprises an unmanned aerial vehicle body, a surveying and mapping assembly is arranged on the unmanned aerial vehicle body, four connecting arms are evenly arranged on the side face, propellers are arranged at the tops of the connecting arms, and supporting legs are arranged at the bottoms of the connecting arms; the lower bottoms of the supporting legs are fixedly connected with a buffering support. The buffering support comprises an outer cylinder, a supporting rod and a footstand. The top of the outer cylinder is fixedly connected with the supporting leg, the lower portion of the outer cylinder is provided with an opening, the upper end of the supporting rod extends into the outer cylinder along the opening, the lower end of the supporting rod is connected with the footstand, the portion, extending into the outer cylinder, of the supporting rod is sleeved with a piston, the outer ring of the piston is in sliding fit with the inner wall of the outer cylinder, and the space between the top face of the piston and the outer cylinder is filled with hydraulic oil. The hydraulic oil communicates with a hydraulic oil tank located on the unmanned aerial vehicle body through the oil hole. A compression spring is arranged between the top face of the piston and the top of the inner cavity of the outer cylinder. And the speed that the compression spring is extruded or rebounded is reduced under the action of the hydraulic oil, so that the effect of stabilizing vibration reduction is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to geographic surveying and mapping unmanned plane technical field, specifically relate to a geographic surveying and mapping unmanned plane damping support. BACKGROUND

[0002] Unmanned aircraft is short for unmanned plane, and it is an aircraft controlled by radio remote control equipment and self-provided program control device. Unmanned plane is a general term for unmanned aircraft. Compared with general manned aircraft, unmanned plane has the advantages of small size, low cost, convenient use, low requirement for combat environment and strong battlefield survival capability. Therefore, unmanned plane is more convenient in task execution.

[0003] The existing geographic surveying and mapping unmanned plane has a relatively large impact force with the ground during landing, causing the unmanned plane main body to vibrate, which can damage the internal key components and shorten the service life over time. Therefore, the prior art has improved the damping support of the unmanned plane, such as the geographic surveying and mapping unmanned plane damping support disclosed in patent document CN 220996737 U. However, the scheme of the present patent mainly uses a spring as a buffer component, which has a large springback force and can easily cause the unmanned plane to bounce upward after landing, the impact force is released slowly, and the impact force cannot be smoothly absorbed, which can still cause the unmanned plane to lose stability. UTILITY MODEL CONTENT

[0004] In view of the problems and deficiencies in the prior art, the utility model provides a geographic surveying and mapping unmanned plane damping support.

[0005] The technical scheme of the utility model is as follows:

[0006] A geographic surveying and mapping unmanned plane damping support, comprising an unmanned plane main body, a surveying and mapping assembly arranged on the unmanned plane main body, four connecting arms arranged uniformly on the side surface, a propeller arranged on the top of the connecting arm, and a support leg arranged on the bottom of the connecting arm.

[0007] Characterized in that the bottom of the support leg is fixedly connected with a buffer support, and the buffer support comprises an outer cylinder, a support rod and a foot base.

[0008] The top of the outer cylinder is fixedly connected with the support leg, and the bottom is provided with an opening. The upper end of the support rod extends into the outer cylinder along the opening, and the lower end is connected with the foot base. A piston is sleeved on the support rod extending into the outer cylinder. The outer circle of the piston is in sliding fit with the inner wall of the outer cylinder. Hydraulic oil is filled in the space between the top surface of the piston and the outer cylinder. At least two oil holes are arranged on the side wall of the outer cylinder. The hydraulic oil is communicated with a hydraulic oil tank arranged on the unmanned plane main body through the oil holes.

[0009] A compression spring is arranged between the top surface of the piston and the top of the inner cavity of the outer cylinder.

[0010] When the unmanned aerial vehicle lands, the support rod is pushed upward by the foot base, slides upward along the inner cavity of the outer cylinder, and extrudes the spring at the top, absorbs part of the impact force through the deformation of the spring, and at the same time, the inner cavity of the outer cylinder is filled with oil hydraulic oil, so that the piston compresses the hydraulic oil when the support rod extrudes the spring, the hydraulic oil pressure increases, the resistance of the support rod moving upward increases, thereby delaying the speed of the spring being compressed, and further stabilizing the damping effect. In addition, the hydraulic oil flows into the oil tank through the oil hole in the side wall of the outer cylinder, and since the diameter of the oil hole is much smaller than the inner diameter of the outer cylinder, the hydraulic oil can be extruded to increase the pressure when landing. When the piston moves upward to the oil hole below, the oil hole below communicates with the inner cavity of the outer cylinder below the piston, and the inner cavity of the outer cylinder below the piston sucks hydraulic oil downward due to the negative pressure, and when the spring is extruded to the elastic limit, the piston is pushed reversely, and since the outer cylinder below the piston is filled with hydraulic oil, the speed of the piston moving downward is slowed down, so that the spring can slowly rebound, further stabilizing the effect of absorbing impact force.

[0011] According to one specific embodiment, the piston sleeve is arranged at the position of the top end of the support rod, the top of the compression spring is connected with the top of the inner cavity of the outer cylinder, and the bottom is fixedly connected with the top of the support rod.

[0012] Two oil holes are arranged on the side wall of the outer cylinder and communicated with the hydraulic oil tank through pipelines. One of the oil holes is close to the top of the outer cylinder, and the other oil hole is close to the bottom of the outer cylinder and located above the initial position of the piston.

[0013] In order to facilitate the connection of the four buffer supports with the outer cylinder, the hydraulic oil tank is fixed on the top of the unmanned aerial vehicle body.

[0014] The foot base is made of elastic material, such as rubber or the like. In order to improve the stability, the outer diameter of the foot base is larger than the outer diameter of the outer cylinder.

[0015] The top of the outer cylinder is fixedly connected with the top of the support leg by screwing or welding.

[0016] The mapping assembly is fixedly connected to the bottom of the unmanned aerial vehicle body, and specifically includes an image acquisition element, a measuring element and the like.

[0017] The beneficial effects of the utility model are:

[0018] The support leg is fixedly connected with the buffer support at the bottom, the buffer support comprises an outer cylinder, a support rod and a foot base, a compression spring is arranged in the outer cylinder, the impact force is absorbed by pushing the spring through the support rod, and at the same time, the outer cylinder where the spring is located is filled with oil hydraulic oil, and is communicated with the oil tank outside through an oil hole, the speed of the compression spring being extruded or rebounding is slowed down through the action of the hydraulic oil, thereby stabilizing the damping effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 isometric view of an embodiment;

[0020] Figure 2 is Figure 1 is a partial enlarged sectional view of the buffer support in

[0021] 1, unmanned aerial vehicle main body; 2, connecting arm; 3, buffer support; 4, surveying and mapping assembly; 31, outer cylinder; 32, support rod; 321, piston; 33, foot base; 34, compression spring; 311, first oil hole; 312, second oil hole; 35, hydraulic oil tank. DETAILED DESCRIPTION

[0022] The technical means adopted to achieve the predetermined inventive purpose of the present application will be further described below in conjunction with the drawings in the embodiments of the present application, referring to Figure 1 and Figure 2 .

[0023] A kind of unmanned aerial vehicle damping support for geographic surveying and mapping, including unmanned aerial vehicle main body 1, it is equipped with surveying and mapping assembly 4, four connecting arms 2 are evenly arranged in side, the top of connecting arm 2 is equipped with propeller, bottom is equipped with support leg;

[0024] It is characterized in that, the lower bottom of the support leg is fixedly connected with buffer support 3, and the buffer support 3 includes outer cylinder 31, support rod 32 and foot base 33;

[0025] The top of outer cylinder 31 is fixedly connected with support leg, and the lower part is provided with opening, the upper end of support rod 32 extends into outer cylinder 31 along the opening, and the lower end is connected with foot base 33, and the support rod 32 extending into outer cylinder 31 is provided with piston 321, the outer ring of piston 321 is in sliding fit with the inner wall of outer cylinder 31, and the space between the top surface of piston 321 and outer cylinder 31 is filled with hydraulic oil, and at least two oil holes are provided on the side wall of outer cylinder 31, and the hydraulic oil is communicated with hydraulic oil tank 35 located on unmanned aerial vehicle main body 1 through oil hole;

[0026] The top surface of piston 321 and the top of the inner cavity of outer cylinder 31 are provided with compression spring 34.

[0027] When the unmanned aerial vehicle lands, the support rod 32 is pushed upward by the foot base 33, slides upward along the inner cavity of the outer cylinder 31, and extrudes the spring at the top, absorbs part of the impact force through the deformation of the spring, and at the same time, the piston 321 is compressed by the hydraulic oil in the inner cavity of the outer cylinder 31, so that the hydraulic oil pressure increases, the resistance of the support rod 32 to move upward increases, thereby slowing down the speed of the spring being compressed, and further stabilizing the shock absorption effect. In addition, the hydraulic oil flows into the oil tank through the oil hole in the side wall of the outer cylinder 31, and due to the fact that the diameter of the oil hole is much smaller than the inner diameter of the outer cylinder 31, the hydraulic oil can be extruded to increase the pressure at the beginning of landing. When the piston 321 moves upward to the oil hole below, the oil hole below communicates with the inner cavity of the outer cylinder 31 below the piston 321, and the inner cavity of the outer cylinder 31 below the piston 321 sucks the hydraulic oil downward due to the negative pressure, and after the spring is extruded to the elastic limit, the piston 321 is pushed reversely, and due to the fact that the space below the piston 321 is filled with hydraulic oil, the speed of the piston 321 moving downward is slowed down, so that the spring can slowly rebound, and further stabilizing the effect of absorbing the impact force.

[0028] According to one specific embodiment, the piston 321 is sleeved on the top end of the support rod 32, the top of the compression spring 34 is connected with the inner cavity of the outer cylinder 31, and the bottom is fixedly connected with the top of the support rod 32.

[0029] Two oil holes are arranged on the side wall of the outer cylinder 31 and communicate with the hydraulic oil tank 35 through pipelines. One of the oil holes is close to the top of the outer cylinder 31, and the other oil hole is close to the bottom of the outer cylinder 31 and located above the initial position of the piston 321.

[0030] In order to facilitate the connection of the four buffer supports 3 with the outer cylinder 31, the hydraulic oil tank 35 is fixed on the top of the unmanned aerial vehicle body 1.

[0031] The foot base 33 is made of elastic material, such as rubber or the like.

[0032] The top of the outer cylinder 31 is fixedly connected with the top of the support leg by screwing or welding.

[0033] The mapping assembly 4 is fixedly connected to the bottom of the unmanned aerial vehicle body 1, and specifically includes an image acquisition element, a measurement element and the like.

[0034] The above is the preferred embodiment of the present application, but the present application is not limited to the above embodiments and examples, and various changes, equivalent replacements, improvements and the like made within the knowledge range of those skilled in the art without departing from the concept of the present application should be included in the protection scope of the present application.

Claims

1. A vibration damping support for a surveying drone, comprising a drone body (1) having a surveying assembly (4) arranged thereon, four connecting arms (2) arranged evenly on the side surface, a propeller arranged at the top of the connecting arm (2), and a supporting leg arranged at the bottom of the connecting arm (2); characterized in that a buffer support (3) fixedly connected to the bottom of the supporting leg, the buffer support (3) comprising an outer cylinder (31), a supporting rod (32), and a foot base (33); the top of the outer cylinder (31) is fixedly connected to the supporting leg, and the bottom is provided with an opening, the upper end of the supporting rod (32) extends into the outer cylinder (31) along the opening, the lower end is connected to the foot base (33), and the supporting rod (32) extending into the outer cylinder (31) is sleeved with a piston (321), the outer ring of the piston (321) is in sliding fit with the inner wall of the outer cylinder (31), the space between the top surface of the piston (321) and the outer cylinder (31) is filled with hydraulic oil, at least two oil holes are arranged on the side wall of the outer cylinder (31), one of which is close to the top of the outer cylinder (31), and the other is close to the bottom of the outer cylinder (31) and located above the initial position of the piston (321), the hydraulic oil communicates with a hydraulic oil tank (35) arranged on the drone body (1) through the oil holes; a compression spring (34) is arranged between the top surface of the piston (321) and the top of the inner cavity of the outer cylinder (31).

2. The vibration damping mount according to claim 1, characterized by The piston (321) is sleeved on the position close to the top end of the supporting rod (32), the top of the compression spring (34) is connected to the top of the inner cavity of the outer cylinder (31), and the bottom is fixedly connected to the top of the supporting rod (32).

3. The vibration damping mount according to claim 2, characterized by Two oil holes are arranged on the side wall of the outer cylinder (31) and communicate with the hydraulic oil tank (35) through pipelines.

4. The vibration damping mount according to claim 3, characterized by The hydraulic oil tank (35) is fixed on the top of the drone body (1).

5. The vibration damping mount according to any one of claims 1 to 4, characterized by The foot base (33) is made of elastic material.

6. The vibration damping mount according to claim 5, characterized by The outer diameter of the foot base (33) is greater than the outer diameter of the outer cylinder (31).

7. The vibration damping mount according to claim 6, characterized by The top of the outer cylinder (31) is fixedly connected to the top of the supporting leg by threading or welding.

8. The vibration damping mount according to claim 7, characterized by The surveying assembly (4) is fixedly connected to the bottom of the drone body (1).

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