Magnetic type piston tube of pneumatic ejector

Abstract

The utility model relates to the technical field of pneumatic catapulting of unmanned aerial vehicles, and provides a magnetic type piston tube of a pneumatic catapult, which comprises a main tube body, tube body connecting pieces and a soft sealing piston, the main tube body comprises a plurality of sections, and every two sections of the main tube body are fixedly connected through the tube body connecting pieces; the soft sealing piston is fixedly connected with the tail end of the main body pipe body; the pipe body connecting piece comprises a connecting female end, a connecting male end and a magnetic attraction part; the connecting female end comprises a female end groove, a magnetic attraction part is arranged in the female end groove, the connecting male end comprises a male end boss, a magnetic attraction part is arranged in the male end boss, and when the female end groove and the male end boss are connected in an inserted mode, heteropoles of the internal magnetic attraction parts attract each other to fix the two sections of main body pipe bodies together to form the complete piston pipe. The piston pipe can be disconnected at the contact surface of the magnetic attraction part when falling from high altitude, so that other parts are prevented from being damaged, and the service life of the piston pipe is greatly prolonged; the sectional piston pipe is convenient to box and transport; the magnetic suction connector is free of tedious threaded butt joint and convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic ejection of unmanned aerial vehicles, and in particular to a magnetic piston tube of a pneumatic ejector, which is a multi-section piston tube connected by strong magnetic adsorption, and solves the problem that the piston tube of a conventional ejector is easily broken after being launched. Background Art

[0002] With the rapid development of the field of UAV technology, there are many ways for UAVs to take off. In order to avoid various restrictions on the take-off site, vertical take-off UAVs and catapult take-off fixed-wing UAVs have been developed based on the traditional taxiing take-off and landing. Vertical take-off UAVs are used in many different scenarios due to their convenience of take-off and landing, but they still have certain problems in terms of hovering time, flight speed and load capacity. Catapult take-off fixed-wing UAVs can avoid these problems well and have better economy. However, fixed-wing UAVs require a higher speed when taking off. Due to their limited propulsion capacity, they cannot obtain an effective initial take-off speed. Therefore, the use of catapult devices for assisted take-off has become the main take-off method for fixed-wing UAVs. Among them, catapult take-off requires a large catapult device, including the catapult body and the piston tube that is launched. After the piston tube pushes the UAV into the air, it will separate from the UAV due to gravity and hit the ground heavily, and the piston tube is often broken.

[0003] The piston tube of a traditional catapult is generally divided into one-piece and threaded joint types. The one-piece piston tube is too long, making it very difficult to pack and transport. In particular, the piston tube of a large UAV catapult is huge and long, and is basically scrapped when it falls to the ground. Although the threaded joint piston tube solves the transportation problem, it is complicated to operate, difficult for one person to operate, and time-consuming and labor-intensive.

[0004] Therefore, in order to solve the above problems, it is necessary to invent a piston tube that can be quickly disassembled and assembled and is not easily broken or damaged when falling from a high altitude, so as to greatly improve the ejection efficiency and service life of the catapult. Utility Model Content

[0005] The utility model adopts the following technical scheme to achieve: a magnetic suction piston tube of a pneumatic catapult, comprising: a main body tube, a tube body connector and a soft sealing piston, the main body tube body comprises a plurality of sections, and every two sections of the main body tube body are fixedly connected through the tube body connector; the soft sealing piston is fixedly connected to the end of the main body tube body; the tube body connector comprises a connecting female end, a connecting male end and a magnetic suction component, and the connecting female end and the connecting male end are a paired docking structure; the connecting female end comprises a female end groove, the female end groove is built with the magnetic suction component, the connecting male end comprises a male end boss, the male end boss is built with the magnetic suction component, and when the female end groove and the male end boss are plugged in, the magnetic suction component inside has strong magnetic opposite poles that attract each other to fix the two sections of the main body tube body together, so that multiple sections of the main body tube body are connected to form a complete piston tube.

[0006] Furthermore, the inner diameter of the female end groove is equal to the outer diameter of the male end boss, thereby ensuring reliable connection of the pipe body connector.

[0007] When the piston tube is launched and falls to the ground, since there is no hard connection between each section of the main tube body, and the connection between the magnetic attraction component in the female end groove and the magnetic attraction component in the male end boss at the connection between each two sections of the main tube body is the weakest, the place where the piston tube falls to the ground and breaks is exactly the contact surface of the two magnetic attraction components without damaging other parts of the piston tube.

[0008] A further improvement is that one end of the main tube body is fixedly connected to the soft sealing piston, and the other end is fixedly connected to one of the connecting female end and the connecting male end to form a first-level tube body; one end of the main tube body is fixedly connected to a fixed drone fixing, and the other end is fixedly connected to the other of the connecting female end and the connecting male end to form a second-level tube body; one end of the main tube body is fixedly connected to the connecting female end, and the other end is fixedly connected to the connecting male end to form a tertiary tube body.

[0009] With respect to the first-stage tube body, a further improvement is that the first-stage tube body is a necessary element and the number is 1; the first-stage tube body fixes the soft sealing piston end at the very end of the complete piston tube to play a role in launching thrust.

[0010] With respect to the secondary tube body, a further improvement is that the secondary tube body is a necessary element and the number is 1; the end of the secondary tube body fixing the drone fixing piece is located at the topmost end of the complete piston tube.

[0011] A further improvement for the three-stage tube body is that the three-stage tube body is used to connect the first-stage tube body and the second-stage tube body, is a non-essential element, and has a number N, where N is an integer greater than or equal to 0.

[0012] Furthermore, the non-fixed soft sealing piston end of the first tube body and the non-fixed drone fixing part end of the second tube body can be connected to form the tube body connecting part.

[0013] Beneficial effects of the technical solution of this application:

[0014] (1) The segmented piston tube is short in length after being disassembled, which is convenient for packing and transportation;

[0015] (2) No complicated thread connection, easy to operate, magnetic suction joint, can be operated by one person;

[0016] (3) Multiple sections of the main tube are connected together through magnetic components to form a complete piston tube, ensuring that the structure of the catapult is stable and reliable.

[0017] (4) When the piston tube falls from a high altitude, the connection of the magnetic component is the weakest point. This design can ensure that the piston tube will be disconnected at the contact surface of the magnetic component when it falls to the ground, avoiding damage to other parts and greatly improving the service life of the piston tube.

[0018] (5) The modular assembly of the piston tube is achieved through the design of the primary, secondary and tertiary tube bodies; the primary tube body provides launch thrust, the secondary tube body fixes the drone fixings, and the tertiary tube body is used to connect the primary and secondary tube bodies, making the overall structure more flexible.

[0019] (6) As a non-essential element, the number of tertiary tube bodies can be adjusted according to specific needs, which enhances the flexibility and adaptability of the overall design.

[0020] (7) The design of the soft-sealed piston makes the maintenance of the piston tube more convenient, and the piston seal part can be quickly replaced or repaired, extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A perspective view of the interior of a magnetic piston tube of a pneumatic catapult provided by the utility model;

[0023] Figure 2 A schematic diagram of the structure of a magnetic suction piston tube soft seal piston part of a pneumatic catapult provided by the utility model;

[0024] Figure 3A schematic diagram of the structure of a magnetic suction piston tube connecting female end portion of a pneumatic catapult provided by the utility model;

[0025] Figure 4 A schematic diagram of the structure of the magnetic suction piston tube connection male end portion of a pneumatic catapult provided by the utility model;

[0026] Figure 5 A schematic diagram of a magnetic suction piston tube of a pneumatic catapult provided by the utility model before breaking;

[0027] Figure 6 A schematic diagram of a state where a magnetic suction piston tube of a pneumatic catapult provided by the utility model is broken;

[0028] Description of the numbers in the figure:

[0029] 1. Main tube body; 2. Soft sealing piston; 3. Tube body connector; 31. Connecting female end; 32. Connecting male end; 33. Magnetic suction component; 311. Female end groove; 321. Male end boss; 4. Primary tube body; 5. Secondary tube body; 6. Tertiary tube body; DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] One embodiment of the present invention is as follows: Figure 1 to Figure 5 As shown, a magnetic suction piston tube of a pneumatic catapult comprises: a main body 1, a body connector 3 and a soft sealing piston 2, wherein the main body 1 comprises a plurality of sections, and every two sections of the main body 1 are fixedly connected by the body connector 3; the soft sealing piston 2 is fixedly connected to the end of the main body 1; the body connector 3 comprises a connecting female end 31, a connecting male end 32 and a magnetic suction component 33, and the connecting female end 31 and the connecting male end 32 are a paired docking structure; the connecting female end 31 comprises a female end groove 311, and the female end groove 311 is equipped with a magnetic suction component 33, and the connecting male end 32 comprises a male end boss 321, and the male end boss 321 is equipped with a magnetic suction component 33, and when the female end groove 311 and the male end boss 321 are plugged in, the internal magnetic suction component 33 has strong magnetic opposite poles that attract each other to fix the two sections of the main body 1 together, so that multiple sections of the main body 1 are connected to form a complete piston tube.

[0033] In the embodiment provided in the present application, further, the inner diameter of the female end groove 311 is equal to the outer diameter of the male end boss 321 , thereby ensuring reliable connection of the pipe body connector 3 .

[0034] In the embodiment provided by the present application, a further improvement is that one end of the main tube body 1 is fixedly connected to the soft sealing piston 2, and the other end is fixedly connected to one of the connecting female end 31 and the connecting male end 32 to form a first-level tube body 4; one end of the main tube body 1 is fixedly connected to a fixed drone fixing part, and the other end is fixedly connected to the other of the connecting female end 31 and the connecting male end 32 to form a second-level tube body 5; one end of the main tube body 1 is fixedly connected to the connecting female end 31, and the other end is fixedly connected to the connecting male end 32 to form a third-level tube body 6.

[0035] In the embodiment provided in the present application, a further improvement is that the first-stage tube body 4 is a necessary element and the number is 1; the first-stage tube body 4 fixes the soft sealing piston 2 end at the very end of the complete piston tube, playing a role in launching thrust.

[0036] In the embodiment provided in the present application, a further improvement for the secondary tube body 5 is that the secondary tube body 5 is a necessary element and the number is 1; the end of the secondary tube body 5 fixing the drone fixing piece is located at the top of the complete piston tube.

[0037] In the embodiment provided in the present application, a further improvement on the tertiary tube body 6 is that the tertiary tube body 6 is used to connect the primary tube body 4 and the secondary tube body 5, is a non-essential element, and the number is N, where N is an integer greater than or equal to 0.

[0038] In the embodiment provided in the present application, further, the non-fixed soft sealing piston 2 end of the first-stage tube body 4 and the non-fixed drone fixing end of the second-stage tube body 5 can be connected to form a tube body connector 3.

[0039] When the piston tube is launched and falls to the ground, since there is no hard connection between each section of the main tube body 1, and the connection between the magnetic attraction component 33 in the female end groove 311 and the magnetic attraction component 33 in the male end boss 321 at the connection between each two sections of the main tube body 1 is the weakest, the place where the piston tube falls to the ground and is broken is exactly the contact surface of the two magnetic attraction components 33 without damaging other parts of the piston tube.

[0040] It is worth mentioning that the illustration provided in the embodiment of the present application is only one application example of the mechanism, including but not limited to the structure in the illustration.

[0041] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

Claims

1. A magnetic piston tube for a pneumatic catapult, characterized in that: include: A main tube body, a tube body connector and a soft sealing piston, wherein the main tube body includes several parts, and every two main tube bodies are fixedly connected by the tube body connector; the soft sealing piston is fixedly connected to the end of the main tube body; the tube body connector includes a connecting female end, a connecting male end and a magnetic attraction component, the connecting female end includes a female end groove, the female end groove has the magnetic attraction component built in, the connecting male end includes a male end boss, the male end boss has the magnetic attraction component built in, the female end groove is docked with the male end boss, so that multiple main tube bodies are connected to form a complete piston tube.

2. The magnetic piston tube of a pneumatic catapult according to claim 1, characterized in that: One end of the main tube body is fixedly connected to the soft sealing piston, and the other end is fixedly connected to one of the connecting female end and the connecting male end to form a primary tube body; one end of the main tube body is fixedly connected to a fixed drone fixing piece, and the other end is fixedly connected to the other of the connecting female end and the connecting male end to form a secondary tube body; one end of the main tube body is fixedly connected to the connecting female end, and the other end is fixedly connected to the connecting male end to form a tertiary tube body.

3. The magnetic piston tube of a pneumatic catapult according to claim 2, characterized in that: The first-stage tube body is a necessary element, and the number is 1; the first-stage tube body fixes the soft sealing piston end at the very end of the complete piston tube.

4. The magnetic piston tube of a pneumatic catapult according to claim 2, characterized in that: The secondary tube body is a necessary element, and the number is 1; the end of the secondary tube body fixing the drone fixing piece is located at the topmost end of the complete piston tube.

5. The magnetic piston tube of a pneumatic catapult according to claim 2, characterized in that: The tertiary tube body is used to connect the primary tube body and the secondary tube body, is a non-essential element, and has a quantity of N, where N is an integer greater than or equal to 0.

6. The magnetic piston tube of a pneumatic catapult according to claim 1, characterized in that: The inner diameter of the female end groove is equal to the outer diameter of the male end boss.

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