Limiting and locking mechanism and flying vehicle

Abstract

This application discloses a limiting locking mechanism and an aircraft, relating to the field of limiting structure technology. The limiting locking mechanism includes a limiting pressure bar, a pre-tightening device, and a pressure-bearing structure. One end of the limiting pressure bar constitutes an actuating part, and the other end constitutes a limiting part. The limiting pressure bar rotates around a first horizontal axis. The distance between the first horizontal axis and the actuating part is greater than the distance between the first horizontal axis and the limiting part. The pre-tightening device applies an upward force to the actuating part to drive the limiting part downward to the limiting area. The pressure-bearing structure moves along a first horizontal path to the limiting area to push the limiting part to overcome the force of the pre-tightening device and rotate upward. The first horizontal path is parallel to the first horizontal axis. The pressure-bearing structure of this solution can overcome the pre-tightening force of the limiting pressure bar and enter the pre-tightening area with a relatively small driving force, reducing the requirements for the power source. Moreover, the limiting pressure bar can apply a large compressive force to the pressure-bearing structure after it enters the pre-tightening area, ensuring the stability of the limiting constraint.

Description

Technical Field

[0001] This application relates to the field of limit structure technology, and in particular to a limit locking mechanism and an air vehicle. Background Technology

[0002] For most two-part structures, the two separate components need to be combined into a single unit under certain operating conditions. For example, in a split-type flying vehicle, the land vehicle and the aircraft are combined; after use, the aircraft needs to be stored in the land vehicle for transport. During the combination of the two separate components, it is often necessary to mate the limiting components on one component with those on the other to constrain the two components and prevent relative displacement after combination.

[0003] For heavy, two-part structures such as split-type flying vehicles, the limiting components used for restraint need to provide a large restraining force. The greater the restraining force, the greater the preload of the limiting components in the unconnected state. This means that at the moment the two limiting components dock, the structure needs to provide sufficient power to overcome the preload of the limiting components and ensure successful docking. However, in some applications where space, cost, and power are limited, it is often difficult to provide a sufficient power source to overcome the preload of the limiting components at the moment of docking. Utility Model Content

[0004] The main purpose of this application is to propose a limit locking mechanism, which aims to solve the technical problem that it is often difficult to provide a sufficient power source to overcome the pre-tightening force at the moment of docking of the limit components in application scenarios where space, cost, and power consumption are limited.

[0005] To achieve the above objectives, the limiting and locking mechanism proposed in this application includes:

[0006] A limiting pressure strip, one end of which constitutes an actuating part, and the other end of which constitutes a limiting part, wherein the middle part of the limiting pressure strip rotates about a first horizontal axis; the distance between the first horizontal axis and the actuating part is greater than the distance between the first horizontal axis and the limiting part;

[0007] A pre-tightening device is connected to the actuating part; the pre-tightening device is used to apply an upward force to the actuating part to drive the limiting part to press down to the lower limiting area;

[0008] A pressure-bearing structure is used to move along a first horizontal path to the limiting area to push the limiting part to overcome the force of the pre-tightening device and rotate upward; the first horizontal path is parallel to the first horizontal axis.

[0009] Optionally, the limiting part has a first inclined surface, which is inclined upward along a second horizontal path, and the second horizontal path is perpendicular to the first horizontal path; the first inclined surface is used to abut against the pressure-bearing structure located in the limiting area.

[0010] Optionally, the limiting part has a second inclined surface on the side facing the pressure-bearing structure, and the second inclined surface is inclined downward along the direction in which the pressure-bearing structure enters the limiting area; the pressure-bearing structure is used to abut against the second inclined surface when entering the limiting area.

[0011] Optionally, the angle between the second inclined plane and the horizontal plane is 10° to 15°.

[0012] Optionally, the limiting locking mechanism further includes a base, the base having a guide structure that extends along the first horizontal path to the limiting area, and the pressure-bearing structure slidingly engaged in the guide structure; the middle part of the limiting pressure strip is rotatably connected to the base around the first horizontal axis.

[0013] Optionally, the pre-tightening device includes an elastic element, the lower end of which is connected to the base, and the upper end of which is connected to the actuating part. The elastic element is used to apply an upward elastic force to the actuating part.

[0014] Optionally, the pressure-bearing structure is provided with rollers, which roll and engage with the limiting part.

[0015] This application also proposes an air vehicle, which includes a land vehicle, an aircraft, and a limiting locking mechanism as described above;

[0016] The limiting locking mechanism's limiting pressure bar and pre-tightening device are installed on the land vehicle, and the limiting locking mechanism's pressure-bearing structure is installed on the aircraft; or, the limiting pressure bar and the pre-tightening device are installed on the aircraft, and the pressure-bearing structure is installed on the land vehicle.

[0017] Optionally, at least two limiting pressure strips are provided at intervals along the first horizontal path, and at least two pressure-bearing structures are provided at intervals along the first horizontal path, with each of the at least two pressure-bearing structures corresponding to and cooperating with the limiting areas of the at least two limiting pressure strips.

[0018] Optionally, the point on each of the limiting pressure strips that first contacts the pressure-bearing structure is taken as the first locking point, and the point on each of the pressure-bearing structures that first contacts the limiting pressure strip is taken as the second locking point. There is a difference between the distance between any two first locking points and the distance between the corresponding two second locking points.

[0019] The limiting locking mechanism proposed in this application sets the rotation center of the limiting pressure bar to be at unequal distances from its two ends, so that the limiting pressure bar forms an unequal-arm lever. The lengths of the two arms of this unequal-arm lever are proportional, and a pre-tightening device generates a pre-tightening force on the actuating part at one end of the limiting pressure bar. Thus, when the pressure-bearing structure enters the limiting area and drives the limiting part at the other end of the limiting pressure bar to rotate upward, the force that the pressure-bearing structure needs to apply to the limiting part to overcome the pre-tightening force can be proportionally reduced based on the above proportional relationship. That is, the pressure-bearing structure only needs a small driving force to complete the action of pushing the limiting pressure bar to rotate and make way, so that the pressure-bearing structure can smoothly enter the pre-tightening area. When the pressure-bearing structure is fully in the pre-tightening area, the pre-tightening force applied by the pre-tightening device to the actuating part will be proportionally amplified and applied to the pressure-bearing structure through the limiting part, thus forming a stable limiting constraint on the pressure-bearing structure under a large compressive force. Based on the above scheme, the pressure-bearing structure can overcome the pre-tightening force of the limiting pressure strip and smoothly enter the pre-tightening area with a small driving force, thereby reducing the requirements for the power source. The limiting pressure strip can also apply a large compressive force to the pressure-bearing structure after the pressure-bearing structure has fully entered the pre-tightening area, thereby ensuring the normal docking action between the limiting pressure strip and the pressure-bearing structure and the stability of the limiting constraint. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the limiting fit between two structures in the prior art;

[0022] Figure 2 A three-dimensional structural diagram of the pressure-bearing structure before locking in one embodiment of the limiting locking mechanism provided in this application;

[0023] Figure 3 A three-dimensional structural diagram of the pressure-bearing structure after locking in one embodiment of the limiting locking mechanism provided in this application;

[0024] Figure 4A schematic cross-sectional view of the pressure-bearing structure after locking in one embodiment of the limiting locking mechanism provided in this application;

[0025] Figure 5 A partial cross-sectional view of the pressure-bearing structure before locking, in one embodiment of the limiting locking mechanism provided in this application;

[0026] Figure 6 A partial structural schematic diagram of an embodiment of the flight vehicle provided in this application;

[0027] Figure 7 This is a schematic diagram of the overall structure of an embodiment of the flight vehicle provided in this application.

[0028] Explanation of icon numbers:

[0029] 1000, Land vehicles; 2000, Aircraft;

[0030] 100. Pressure block; 200. Force-applying component; 300. Limiting component;

[0031] 1. Limiting strip; 11. Actuating part; 12. Limiting part; 121. First inclined surface; 122. Second inclined surface;

[0032] 2. Pre-tightening device; 21. Elastic element;

[0033] 3. Pressure-bearing structure; 31. Rollers;

[0034] 4. Base; 41. Guide structure.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0039] For most two-part structures, the two separate components need to be combined into a single unit under certain operating conditions. For example, in a split-type flying vehicle, the land vehicle and the aircraft are combined; after use, the aircraft needs to be stored in the land vehicle for transport. During the combination of the two separate components, it is often necessary to mate the limiting components on one component with those on the other to constrain the two components and prevent relative displacement after combination.

[0040] For heavy, two-part structures such as split-type flying vehicles, the limiting components used for restraint need to provide a large restraining force. The greater the restraining force, the greater the preload of the limiting components in the unconnected state. This means that at the moment the two limiting components dock, the structure needs to provide sufficient power to overcome the preload of the limiting components and ensure successful docking. However, in some applications where space, cost, and power are limited, it is often difficult to provide a sufficient power source to overcome the preload of the limiting components at the moment of docking.

[0041] The researchers of this application discovered through research that the limiting component 300 in existing two-part structures typically employs, for example... Figure 1The structure shown includes a limiting component 300 on one of the structures, comprising a pressure block 100 and force-applying components 200 such as springs. When the two structures are engaged, the pressure block 100, under the preload provided by the force-applying components 200, directly presses against the limiting component 300 of the other structure. That is, the direction of the preload provided by the force-applying components 200 is the same as the pressing direction of the pressure block 100. This means that during the initial engagement phase, the limiting components 300 of the two structures require a driving force sufficient to overcome the preload in the opposite direction of the preload provided by the force-applying components 200 to push the pressure block 100 to move in the opposite direction of the preload provided by the force-applying components 200, allowing the limiting component 300 of the other structure to enter the limiting area, thus completing the engagement between the two limiting components 300. Under the constraints of the above structure, a high driving force is required for the engagement of the two limiting components 300.

[0042] To address the aforementioned issues, this application proposes a limiting and locking mechanism that aims to alter the aforementioned pressing and limiting form. On one hand, it enables the force-applying component 200 on one structure to provide sufficient pressing force to the limiting component 300 on another structure through the pressing block 100, thereby achieving a stable limiting constraint between the two structures. On the other hand, it avoids excessive driving force required to overcome the aforementioned pressing force when the limiting component 300 engages with the pressing block 100.

[0043] Please see Figures 2 to 4 The limiting locking mechanism provided in one embodiment of this application includes:

[0044] The limiting pressure strip 1 has one end forming an actuating part 11 and the other end forming a limiting part 12. The middle part of the limiting pressure strip 1 rotates around a first horizontal axis. The distance between the first horizontal axis and the actuating part 11 is greater than the distance between the first horizontal axis and the limiting part 12.

[0045] Pre-tightening device 2 is connected to actuating part 11; pre-tightening device 2 is used to apply an upward force to actuating part 11 to drive limiting part 12 to press down to the lower limiting area;

[0046] The pressure-bearing structure 3 is used to move along the first horizontal path to the limiting area to push the limiting part 12 to overcome the force of the pre-tightening device 2 and rotate upward; the first horizontal path is parallel to the first horizontal axis.

[0047] In this embodiment, the limiting pressure strip 1 can be set on one of the two structures of the split structure, and the pressure bearing structure 3 can be set on the other structure of the split structure; the pre-tightening device 2 can be an elastic element 21, a hydraulic device, a pneumatic device, or other device that can generate an external pre-tightening force on the actuating part 11 of the limiting pressure strip 1; a limiting area is formed below the limiting part 12 of the limiting pressure strip 1.

[0048] Based on the above configuration, when the two structural members of the two-part structure are not combined, i.e., when the pressure-bearing structure 3 and the limiting pressure strip 1 are not in contact, the actuating part 11 at one end of the limiting pressure strip 1 is subjected to a pre-tightening force applied by the pre-tightening device 2. Under this upward pre-tightening force, the limiting pressure strip 1 will rotate around the first horizontal axis, causing the limiting part 12 at the other end of the limiting pressure strip 1 to press down. A corresponding limiting structure can be provided in the limiting locking mechanism to support the pressing limiting part 12, thereby keeping the limiting part 12 within the limiting area. When the two structural members of the two-part structure need to be combined, the pressure-bearing structure 3 will move towards the limiting area along the first horizontal path as the two structural members approach each other. When the pressure-bearing structure 3 enters the limiting area, it will contact the limiting part 12. As the pressure-bearing structure 3 continues to feed along the first horizontal path, it will drive the limiting part 12 to overcome the pre-tightening force of the pre-tightening device 2 and rotate upward to a position that does not obstruct the limiting area, so that the pressure-bearing structure 3 can smoothly enter the limiting area. After the pressure-bearing structure 3 has fully entered the limiting area, the limiting part 12 will press against the pressure-bearing structure 3 under the pre-tightening force of the pre-tightening device 2. The pressure-bearing structure 3 is used to cooperate with the limiting part 12 to ensure that the pressing action of the limiting part 12 on the pressure-bearing structure 3 can at least form a limiting constraint on the pressure-bearing structure 3 in the vertical direction.

[0049] It is understandable that a corresponding inclined structure can be provided at the position where the pressure-bearing structure 3 contacts the limiting part 12. In this way, the driving force that drives the pressure-bearing structure 3 to move along the first horizontal path can form an upward component force through the inclined structure, thereby driving the limiting part 12 to rotate upward more smoothly.

[0050] Because the distances between the rotation center (i.e., the first horizontal axis) of the limiting pressure bar 1 and the actuating part 11 and the limiting part 12 are not equal, the limiting pressure bar 1 constitutes an unequal-arm lever structure. Figure 4As shown, the distance between the first horizontal axis and the actuating part 11 is taken as L1, and the distance between the first horizontal axis and the limiting part 12 is taken as L2. Taking L1:L2=N:1 as an example, in the above-mentioned limiting constraint process, when the pressure-bearing structure 3 enters the limiting area and drives the limiting part 12 to rotate upward, the upward force that the pressure-bearing structure 3 needs to apply to the limiting part 12 is only 1 / N of the upward pre-tightening force applied by the pre-tightening device 2 to the actuating part 11. That is, the pressure-bearing structure 3 only needs a small driving force to complete the action of pushing the limiting pressure bar 1 to move aside, so that the pressure-bearing structure 3 can smoothly enter the pre-tightening area. When the pressure-bearing structure 3 has completely entered the pre-tightening area, the upward pre-tightening force applied by the pre-tightening device 2 to the actuating part 11 will be amplified by N times and applied to the pressure-bearing structure 3 through the limiting part 12. In this way, a stable limiting constraint can be formed on the pressure-bearing structure 3 under a large pressing force.

[0051] Therefore, the limiting locking mechanism provided in this embodiment sets the rotation center of the limiting pressure bar 1 to be unequal in distance from both ends of the limiting pressure bar 1, so that the limiting pressure bar 1 forms an unequal-arm lever. The lengths of the two arms of the unequal-arm lever are proportional, and the pre-tightening device 2 generates a pre-tightening force on the actuating part 11 at one end of the limiting pressure bar 1. Thus, when the pressure bearing structure 3 enters the limiting area and drives the limiting part 12 at the other end of the limiting pressure bar 1 to rotate upward, the pressure bearing structure 3 needs to apply a force to the limiting part 12 to restrain it. The magnitude of the pre-tightening force can be proportionally reduced based on the aforementioned ratio. This means the bearing structure 3 requires only a small driving force to rotate and reposition the limiting pressure strip 1, allowing it to smoothly enter the pre-tightening area. Once the bearing structure 3 is fully in the pre-tightening area, the pre-tightening force applied by the pre-tightening device 2 to the actuator 11 is amplified proportionally and applied to the bearing structure 3 through the limiting part 12. This provides a stable limiting constraint on the bearing structure 3 under a larger compressive force. Based on this scheme, the bearing structure 3 can overcome the pre-tightening force of the limiting pressure strip 1 and smoothly enter the pre-tightening area with a smaller driving force, thus reducing the requirements for the power source. The limiting pressure strip 1 can also apply a larger compressive force to the bearing structure 3 after it has fully entered the pre-tightening area, ensuring the normal connection between the limiting pressure strip 1 and the bearing structure 3 and the stability of the limiting constraint.

[0052] Optionally, refer to Figures 2 to 4 The limiting part 12 has a first inclined surface 121, which is inclined upward along a second horizontal path, and the second horizontal path is perpendicular to the first horizontal path; the first inclined surface 121 is used to abut against the pressure-bearing structure 3 located in the limiting area.

[0053] Specifically, such as Figure 4As shown, taking the first horizontal path parallel to the X-axis, the second horizontal path parallel to the Y-axis, and the vertical direction parallel to the Z-axis as an example, the first inclined surface 121 simultaneously has components on the Y-axis and Z-axis. Thus, when the first inclined surface 121 is pressed against the pressure-bearing structure 3 under the pre-tightening force provided by the pre-tightening device 2, the pressing force P applied by the first inclined surface 121 to the pressure-bearing structure 3 can be divided into a first component force P1 in the Y-axis direction and a second component force P2 in the Z-axis direction, thereby simultaneously generating a limiting effect on the pressure-bearing structure 3 on both the Y-axis and Z-axis, improving the limiting constraint effect on the pressure-bearing structure 3.

[0054] The limiting and locking mechanism may be equipped with a corresponding support structure or abutment limiting structure to cooperate with the first inclined surface 121 and limit the opposite two sides of the pressure-bearing structure 3 in two directions along the Y-axis. Preferably, the limiting and locking mechanism includes, as shown below, Figure 6 The two limiting pressure strips 1 shown are respectively arranged on the left and right sides of the limiting area along the Y-axis. The first inclined surface 121 of one limiting pressure strip 1 can generate a pushing force to the left along the Y-axis on the pressure-bearing structure 3 in the limiting area, and the first inclined surface 121 of the other limiting pressure strip 1 can generate a pushing force to the right along the Y-axis on the pressure-bearing structure 3 in the limiting area. Under the combined action of the pushing forces in the above two directions, the pressure-bearing structure 3 can be completely limited on the Y-axis.

[0055] Optionally, refer to Figures 2 to 5 The limiting part 12 has a second inclined surface 122 on the side facing the pressure-bearing structure 3. The second inclined surface 122 is inclined downward along the direction in which the pressure-bearing structure 3 enters the limiting area. The pressure-bearing structure 3 is used to abut against the second inclined surface 122 when entering the limiting area.

[0056] Specifically, taking the first horizontal path parallel to the X-axis, the second horizontal path parallel to the Y-axis, and the vertical direction parallel to the Z-axis as an example, the second inclined surface 122 simultaneously has components on both the X-axis and the Z-axis. Thus, when the pressure-bearing structure 3 enters the limiting area and contacts the second inclined surface 122, the driving force used to drive the pressure-bearing structure 3 to feed along the X-axis can form a pushing force along the Z-axis through the second inclined surface 122. Under this pushing force, the pressure-bearing structure 3 feeding along the X-axis can more smoothly drive the limiting part 12 to rotate upward, thereby realizing the yielding of the limiting pressure strip 1, so that the pressure-bearing structure 3 can smoothly enter the limiting area with less resistance.

[0057] Optionally, refer to Figures 2 to 5 The angle between the second inclined plane 122 and the horizontal plane is 10° to 15°.

[0058] Specifically, when the pressure-bearing structure 3 enters the limiting area and comes into contact with the second inclined surface 122, the normal force generated by the second inclined surface 122 on the pressure-bearing structure 3 is P, such as... Figure 5 As shown, when the angle between the second inclined surface 122 and the horizontal plane is θ, the driving force F for driving the pressure-bearing structure 3 to feed along the X-axis is F = P * tanθ. It can be seen that when θ is large, it means that the driving force F required for the pressure-bearing structure 3 to overcome the normal pressure P and push the limiting pressure strip 1 to move is large. Based on this, this embodiment limits the value of θ to 10° to 15°, so that the pressure-bearing structure 3 can overcome the normal pressure P and push the limiting pressure strip 1 to move with a smaller driving force F, thereby further reducing the requirements for the power source.

[0059] Optionally, refer to Figures 2 to 5 The limiting locking mechanism also includes a base 4, which is provided with a guide structure 41. The guide structure 41 extends along the first horizontal path to the limiting area, and the pressure-bearing structure 3 is slidably fitted in the guide structure 41. The middle part of the limiting pressure strip 1 is rotatably connected to the base 4 around the first horizontal axis.

[0060] By setting the base 4, an installation foundation can be provided for the limiting pressure strip 1, while also providing support for the pressure-bearing structure 3. The guide structure 41 can be used to guide the pressure-bearing structure 3 to move accurately to the limiting area. The guide structure 41 can take the form of a slide, guide rail, etc., and is not limited here.

[0061] Optionally, refer to Figures 2 to 5 The pre-tightening device 2 includes an elastic element 21. The lower end of the elastic element 21 is connected to the base 4, and the upper end of the elastic element 21 is connected to the actuating part 11. The elastic element 21 is used to apply an upward elastic force to the actuating part 11.

[0062] In this embodiment, the elastic element 21 applies a pre-tightening force to the limiting pressure strip 1. The elastic element 21 occupies a small space, making it easy to install and maintain. Furthermore, the elastic element 21 with different elastic coefficients can be easily replaced according to actual needs to meet different pressing force requirements, thereby improving the applicability of the limiting locking mechanism.

[0063] The elastic element 21 can be a spring, elastic colloid, etc., and there is no limitation here.

[0064] Optionally, refer to Figures 2 to 5 The pressure-bearing structure 3 is provided with a roller 31, which rolls and engages with the limiting part 12.

[0065] In the actual limiting constraint process, when the limiting part 12 rotates upward under the push of the pressure-bearing structure 3, allowing the pressure-bearing structure 3 to enter the limiting area, the pressure-bearing structure 3 will slide a certain distance along the X-axis on the surface of the limiting part 12 until the pressure-bearing structure 3 is completely in the limiting area. During the sliding process of the pressure-bearing structure 3 relative to the limiting part 12, the pressure-bearing structure 3 needs to overcome the frictional force on the surface of the limiting part 12.

[0066] For metal structural components such as aluminum and steel, the coefficient of sliding friction is approximately 0.1 to 0.2, while the coefficient of rolling friction is only 0.03 to 0.05. Based on this consideration, this embodiment provides rollers 31 on the pressure-bearing structure 3. By rolling the rollers 31 on the surface of the limiting part 12, the sliding friction between the pressure-bearing structure 3 and the limiting part 12 can be converted into rolling friction. This reduces the frictional force that the pressure-bearing structure 3 needs to overcome when entering the limiting area, further reducing the driving force required to drive the pressure-bearing structure 3 to feed along the X-axis, thereby further reducing the requirements for the power source.

[0067] Preferably, the roller 31 is configured as a needle roller bearing, which has advantages such as small outer diameter, compact structure, strong load-bearing capacity and high machining accuracy.

[0068] Please see Figures 2 to 7 This application also provides an air vehicle, which includes a land vehicle 1000, an aircraft 2000, and the limiting locking mechanism in any of the above embodiments;

[0069] The limiting pressure bar 1 and the pre-tightening device 2 of the limiting locking mechanism are installed on the land vehicle 1000, and the pressure-bearing structure 3 of the limiting locking mechanism is installed on the aircraft 2000; or, the limiting pressure bar 1 and the pre-tightening device 2 are installed on the aircraft 2000, and the pressure-bearing structure 3 is installed on the land vehicle 1000.

[0070] In this embodiment, the flying vehicle includes, but is not limited to, a split-type flying car; such as Figure 7 As shown, after use, the aircraft 2000 of the flying vehicle needs to be stored in the land vehicle 1000 of the flying vehicle and transported away by the land vehicle 1000. During the process of storing the aircraft 2000 in the land vehicle 1000, a limiting locking mechanism installed on the land vehicle 1000 and the aircraft 2000 is used to limit and constrain the two to prevent relative displacement between the aircraft 2000 and the land vehicle 1000 after they are combined.

[0071] For the specific configuration of the limit locking mechanism, please refer to the above embodiment. Taking the limit locking mechanism with the limit pressure strip 1 and pre-tightening device 2 installed on the land vehicle 1000 and the pressure-bearing structure 3 installed on the aircraft 2000 as an example, the specific process of the limit locking mechanism completing the limit engagement during the combination of the land vehicle 1000 and the aircraft 2000 is explained below:

[0072] In the initial state, the aircraft 2000 is separated from the land vehicle 1000. At this time, the pressure-bearing structure 3 and the limiting pressure strip 1 are not in contact. The actuating part 11 at one end of the limiting pressure strip 1 is subjected to the pre-tightening force applied by the pre-tightening device 2. Under this upward pre-tightening force, the limiting pressure strip 1 will rotate around the first horizontal axis, causing the limiting part 12 at the other end of the limiting pressure strip 1 to press down. A corresponding limiting structure can be provided in the limiting locking mechanism to support the pressed limiting part 12, thereby keeping the limiting part 12 within the limiting area. When the aircraft 2000 moves into the land vehicle 1000 to begin the engagement operation, the pressure-bearing structure 3 will move with the aircraft 2000. The pressure-bearing structure 3 moves along the first horizontal path toward the limiting area. When the pressure-bearing structure 3 enters the limiting area, it will contact the limiting part 12. As the pressure-bearing structure 3 continues to advance along the first horizontal path, it will drive the limiting part 12 to overcome the pre-tightening force of the pre-tightening device 2 and rotate upward to a position that does not obstruct the limiting area, so that the pressure-bearing structure 3 can smoothly enter the limiting area. When the aircraft 2000 moves to the preset position inside the land vehicle 1000, the pressure-bearing structure 3 will also fully enter the limiting area. At this time, the limiting part 12 will press against the pressure-bearing structure 3 under the pre-tightening force of the pre-tightening device 2, thereby completing the limiting constraint of the pressure-bearing structure 3.

[0073] Since this air vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above embodiments. That is, the rotation center of the limiting pressure bar 1 is set to be unequal in distance from the two ends of the limiting pressure bar 1, so that the limiting pressure bar 1 forms an unequal arm lever. The lengths of the two arms of the unequal arm lever are proportional, and the pre-tightening device 2 generates a pre-tightening force on the actuating part 11 at one end of the limiting pressure bar 1. Thus, when the pressure-bearing structure 3 enters the limiting area and drives the limiting part 12 at the other end of the limiting pressure bar 1 to rotate upward, The force required by the pressure-bearing structure 3 to overcome the pre-tightening force applied to the limiting part 12 can be proportionally reduced based on the aforementioned ratio. This means the pressure-bearing structure 3 requires only a small driving force to rotate and reposition the limiting pressure bar 1, allowing it to smoothly enter the pre-tightening area. Once the pressure-bearing structure 3 is fully in the pre-tightening area, the pre-tightening force applied by the pre-tightening device 2 to the actuating part 11 is amplified proportionally and applied to the pressure-bearing structure 3 through the limiting part 12. This provides a stable limiting constraint on the pressure-bearing structure 3 under a larger compressive force. Based on this scheme, the pressure-bearing structure 3 can overcome the pre-tightening force of the limiting pressure bar 1 with a smaller driving force, thus reducing the requirements for the power source. Furthermore, the limiting pressure bar 1 can apply a larger compressive force to the pressure-bearing structure 3 after it has fully entered the pre-tightening area, ensuring the normal connection between the limiting pressure bar 1 and the pressure-bearing structure 3 and the stability of the limiting constraint.

[0074] Optionally, refer to Figures 2 to 7 At least two limiting pressure strips 1 are spaced apart along the first horizontal path, and at least two pressure-bearing structures 3 are spaced apart along the first horizontal path. The at least two pressure-bearing structures 3 are matched one-to-one with the limiting areas of the at least two limiting pressure strips 1.

[0075] Specifically, taking two limiting pressure strips 1 spaced along the X-axis (i.e., the first horizontal path) and two pressure-bearing structures 3 spaced along the X-axis as an example, during the movement of the aircraft 2000 relative to the land vehicle 1000 along the X-axis, the pressure-bearing structure 3 located in front will push the limiting pressure strip 1 located in front to rotate upwards to make way, and the pressure-bearing structure 3 located in the rear will push the limiting pressure strip 1 located in the rear to rotate upwards to make way; when the aircraft 2000 moves to the preset position inside the land vehicle 1000, the limiting part 12 of the limiting pressure strip 1 located in front will press against the pressure-bearing structure 3 located in front, and the limiting part 12 of the limiting pressure strip 1 located in the rear will press against the pressure-bearing structure 3 located in the rear. In this way, the limiting constraint between the aircraft 2000 and the land vehicle 1000 is realized through the cooperation between the limiting pressure strip 1 and the corresponding pressure-bearing structure 3.

[0076] When the number of limiting pressure strips 1 and pressure-bearing structures 3 is set to two or more, their matching relationship can be derived by analogy with the above idea, and will not be elaborated here. It can be understood that each limiting pressure strip 1 and each pressure-bearing structure 3 can be staggered on the Y-axis to avoid interference between the pressure-bearing structure 3 and the non-corresponding limiting pressure strip 1 during the movement along the X-axis.

[0077] This embodiment improves the stability of the limiting constraint between the aircraft 2000 and the land vehicle 1000 by using a one-to-one limiting fit between multiple sets of limiting pressure strips 1 and the pressure-bearing structure 3.

[0078] Optionally, refer to Figures 2 to 7 The point on each limiting pressure strip 1 that first contacts the pressure-bearing structure 3 is taken as the first locking point, and the point on each pressure-bearing structure 3 that first contacts the limiting pressure strip 1 is taken as the second locking point. There is a difference between the distance between any two first locking points and the distance between the corresponding two second locking points.

[0079] During the movement of the aircraft 2000 relative to the land vehicle 1000, when the pressure-bearing structure 3 comes into contact with the limiting pressure strip 1, the contact point on the limiting pressure strip 1 is the first locking point, and the contact point on the pressure-bearing structure 3 is the second locking point. When multiple limiting pressure strips 1 and pressure-bearing structures 3 are spaced along the X-axis as in the above embodiment, during the movement of the aircraft 2000 along the X-axis, if multiple pressure-bearing structures 3 come into contact with the corresponding limiting pressure strips 1 at the same time, the multiple pressure-bearing structures 3 need to push the corresponding limiting pressure strips 1 to make way at the same time. This means that the aircraft 2000 needs to overcome the load formed by the superposition of the pre-tightening forces of multiple limiting pressure strips 1 at that time in order to continue moving along the X-axis. That is, at this time, the driving force needs to be increased to an extremely high level in order to drive the aircraft 2000 to overcome the load and continue moving along the X-axis. After the pressure-bearing structures 3 push the limiting pressure strips 1 to make way, the load that the aircraft 2000 needs to overcome will decrease sharply. If the driving force level cannot be reduced in time, the aircraft 2000 is prone to rushing forward and colliding under excessive driving force.

[0080] To solve the above problems, this embodiment sets the distance between any two first locking points to be unequal to the distance between the corresponding two second locking points. In this way, during the movement of the aircraft 2000 relative to the land vehicle 1000 along the X-axis, the timing of each pressure-bearing structure 3 pushing the corresponding limiting pressure bar 1 to make way is staggered. This avoids the situation where two pressure-bearing structures 3 need to push the corresponding limiting pressure bar 1 to make way at the same time. Thus, the staggered locking method avoids a sharp increase in the driving force required to drive the aircraft 2000 to move, and can reduce the instantaneous driving force requirement by more than 30%.

[0081] There is a difference between the distance between any two first locking points and the distance between the corresponding two second locking points, which can be understood as follows:

[0082] When there are two first and second lock points, the distance between the first lock point in front and the first lock point behind is not equal to the distance between the second lock point in front and the second lock point behind. When there are three first and second lock points, the distance between the first lock point in front and the middle lock point is not equal to the distance between the second lock point in front and the middle lock point, the distance between the middle lock point and the first lock point behind is not equal to the distance between the second lock point in middle and the second lock point behind, and the distance between the first lock point in front and the first lock point behind is not equal to the distance between the second lock point in front and the second lock point behind. When there are more than three first and second lock points, the same logic applies, which will not be elaborated here.

[0083] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A limiting locking mechanism, characterized in that, The limiting locking mechanism includes: A limiting pressure strip, one end of which constitutes an actuating part, and the other end of which constitutes a limiting part, wherein the middle part of the limiting pressure strip rotates about a first horizontal axis; the distance between the first horizontal axis and the actuating part is greater than the distance between the first horizontal axis and the limiting part; A pre-tightening device is connected to the actuating part; the pre-tightening device is used to apply an upward force to the actuating part to drive the limiting part to press down to the lower limiting area; A pressure-bearing structure is used to move along a first horizontal path to the limiting area to push the limiting part to overcome the force of the pre-tightening device and rotate upward; the first horizontal path is parallel to the first horizontal axis.

2. The limiting and locking mechanism according to claim 1, characterized in that, The limiting part has a first inclined surface, which is inclined upward along a second horizontal path, and the second horizontal path is perpendicular to the first horizontal path; the first inclined surface is used to abut against the pressure-bearing structure located in the limiting area.

3. The limiting and locking mechanism according to claim 1, characterized in that, The limiting part has a second inclined surface on the side facing the pressure-bearing structure, and the second inclined surface is inclined downward along the direction in which the pressure-bearing structure enters the limiting area; the pressure-bearing structure is used to abut and cooperate with the second inclined surface when entering the limiting area.

4. The limiting and locking mechanism according to claim 3, characterized in that, The angle between the second inclined plane and the horizontal plane is 10° to 15°.

5. The limiting and locking mechanism according to claim 1, characterized in that, The limiting locking mechanism further includes a base, the base having a guide structure that extends along the first horizontal path to the limiting area, and the pressure-bearing structure slidingly engaged in the guide structure; the middle part of the limiting pressure strip is rotatably connected to the base around the first horizontal axis.

6. The limiting and locking mechanism according to claim 5, characterized in that, The pre-tightening device includes an elastic element, the lower end of which is connected to the base, and the upper end of which is connected to the actuating part. The elastic element is used to apply an upward elastic force to the actuating part.

7. The limiting and locking mechanism according to any one of claims 1 to 6, characterized in that, The pressure-bearing structure is equipped with rollers, which roll and engage with the limiting part.

8. An air transport vehicle, characterized in that, The flying vehicles include land vehicles, aircraft, and limiting locking mechanisms as described in any one of claims 1 to 7; The limiting locking mechanism's limiting pressure bar and pre-tightening device are installed on the land vehicle, and the limiting locking mechanism's pressure-bearing structure is installed on the aircraft; or, the limiting pressure bar and the pre-tightening device are installed on the aircraft, and the pressure-bearing structure is installed on the land vehicle.

9. The flying vehicle according to claim 8, characterized in that, At least two limiting pressure strips are provided at intervals along the first horizontal path, and at least two pressure-bearing structures are provided at intervals along the first horizontal path. The at least two pressure-bearing structures are matched one-to-one with the limiting areas of the at least two limiting pressure strips.

10. The flying vehicle according to claim 9, characterized in that, The point on each of the limiting pressure strips that first contacts the pressure-bearing structure is taken as the first locking point, and the point on each of the pressure-bearing structures that first contacts the limiting pressure strip is taken as the second locking point. There is a difference between the distance between any two first locking points and the distance between the corresponding two second locking points.

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