Quick release device, paddle mounting assembly and aircraft

Abstract

The invention provides a quick release device, a paddle mounting assembly and an aircraft. The quick release device comprises a base, a mounting main body, a rotating part and a locking mechanism, the rotating part is connected with the mounting main body and can rotate relative to the mounting main body, and the rotating part can be mounted on the base through rotation and can be detached from the base through reverse rotation; the locking mechanism comprises an operating piece, a first elastic piece and a locking piece; the operating piece is set to be capable of switching from a first position to a second position when being applied with force and reset to the first position when being released; when the operating part moves from the first position to the second position, the locking part moves from the locking position to the unlocking position, when the operating part resets to the first position, the locking part moves from the unlocking position to the locking position, the locking part locks the rotating part at the locking position, and the locking part unlocks the rotating part at the unlocking position. According to the scheme provided by the invention, the paddles are simply and conveniently disassembled and assembled through the quick disassembling device, the paddles are stably and reliably installed, and the dynamic balance is good.

Description

Technical Field

[0001] The present invention relates to the field of aircraft technology, and in particular to a quick-release device, a blade mounting assembly and an aircraft. Background Art

[0002] The propeller blades are an important part of the power assembly of the aircraft. The propeller blades are usually detachably mounted on the driving device through a mounting device, so that the driving device drives the propeller blades to rotate and provide power for the aircraft.

[0003] Currently, the detachable installation device used to install the blades has problems such as difficulty in operation when installing and removing the blades, large weight and appearance, and easy influence on the dynamic balance of the blades.

[0004] Therefore, it is necessary to provide a quick-release device to solve the problems existing in the current detachable installation devices of the blades. Summary of the invention

[0005] The embodiments of the present application provide a quick-release device, a blade mounting assembly, and an aircraft to solve the problems of the current detachable blade mounting devices, such as the difficulty in operation, the large weight and appearance, and the easy influence on the dynamic balance of the blades.

[0006] The embodiment of the present application provides a quick release device, comprising: a base, a mounting body, a rotating member and a locking mechanism; The rotating member is connected to the installation body and is rotatable relative to the installation body. The rotating member can be installed on the base by rotating and can be removed from the base by reverse rotation. When the rotating member is installed on the base, the installation body is limited to the base. The locking mechanism includes an operating member, a first elastic member and a locking member; the operating member is configured to be able to switch from a first position to a second position when a force is applied, and to reset to the first position under the action of the first elastic member when released; the locking member is configured to be linked with the operating member, and when the operating member moves from the first position to the second position, the locking member moves from the locked position to the unlocked position, and when the operating member resets to the first position, the locking member moves from the unlocked position to the locked position, wherein, in the locked position, the locking member locks the rotating member, and in the unlocked position, the locking member unlocks the rotating member.

[0007] In one embodiment, the rotating member is a nut disposed around the mounting body, and the rotating member is connected to the base via threads.

[0008] In one embodiment, the rotating member is arranged around the installation body, and an axial limiting portion is provided at one end of the rotating member away from the base, and the axial limiting portion axially limits the installation body in a direction away from the base.

[0009] In one embodiment, one of the mounting body and the base is provided with a plurality of positioning grooves arranged at intervals along the circumference, and the other is provided with a plurality of positioning protrusions arranged at intervals along the circumference. When the mounting body is installed on the base, the positioning protrusions are inserted into the positioning grooves one by one.

[0010] In one embodiment, one of the mounting body and the base is provided with a center hole located in the center, and the other is provided with a positioning column located in the center, and when the mounting body is mounted on the base, the positioning column is inserted into the center hole.

[0011] In one embodiment, the rotating member is provided with a plurality of slots spaced apart along the circumferential direction, the operating member is located at the center of the rotating member, and at least two locking members are spaced apart along the circumferential direction around the operating member; The locking member includes a pin and a second elastic member, one end of the pin is pressed against the operating member, and the other end faces radially outward, and the second elastic member is configured to apply a radially inward elastic force to the pin; wherein, when the operating member is located at the first position, the pin is pushed into the slot by the operating member and is in the locking position, and when the operating member moves to the second position, the pin is disengaged from the slot and is in the unlocking position.

[0012] In one embodiment, the operating member includes a conical structure, the ejector pin is pressed against the conical structure, and the ejector pin is switched between the unlocking position and the locking position through the movement of the conical structure.

[0013] In one embodiment, the mounting body includes a disk body for mounting a part to be mounted, a side wall arranged around the disk body, and a cylinder body located at the center of the disk body, the cylinder body is provided with a first through hole corresponding to the ejector pin, the side wall is provided with a second through hole corresponding to the ejector pin, the operating part is movably mounted in the mounting hole formed in the cylinder body, one end of the ejector pin passes through the first through hole to push against the operating part, and the other end passes through the second through hole to face the slot.

[0014] In one embodiment, a shaft retaining ring is provided on the ejector pin, the second elastic member is a coil spring sleeved on the ejector pin, the second elastic member is located between the shaft retaining ring and the second through hole, and one end of the second elastic member is pressed against the shaft retaining ring, and the other end is pressed against the peripheral wall of the second through hole.

[0015] In one embodiment, the operating member is configured to move from the first position to the second position by pressing, the mounting body is provided with a mounting hole, one end of the operating member is provided with a pressing portion, and the other end is movably mounted in the mounting hole.

[0016] In one embodiment, a positioning hole is provided on an end surface of one end of the operating member installed in the mounting hole, one end of the first elastic member is installed in the positioning hole, and the other end is pressed against the bottom of the mounting hole.

[0017] An embodiment of the present application further provides a blade mounting assembly, comprising a blade, a drive device, and the quick-release device as described above, wherein the mounting body of the quick-release device is fixedly connected to the blade, and the base is connected to the drive end of the drive device.

[0018] An embodiment of the present application also provides an aircraft, comprising an aircraft body and at least two blade mounting assemblies as described above.

[0019] The quick-release device provided in the embodiments of the present application can realize (for example) the quick disassembly and assembly of the blades. The installation and disassembly of the blades are simple and quick to operate by moving the operating member from the first position to the second position, for example, by pressing the operating member to move to the second position, and rotating the rotating member. Moreover, after the rotating member is installed on the base, the rotating member is locked by a locking mechanism to prevent it from reversing, which can improve the stability and reliability of the installation of the blades. In addition, the quick-release device provided in the present application has a simple structure, a small size, and a small effect on the dynamic balance of the blades. It effectively solves the problem that the device for quickly installing the blades in the prior art affects the balance of the blades due to its large appearance when the parts are unevenly formed or installed asymmetrically.

[0020] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0022] Figure 1 It is a structural schematic diagram of a quick release device according to an embodiment of the present application; Figure 2 for Figure 1 A schematic diagram of a cutaway structure of a quick release device; Figure 3 for Figure 1A schematic diagram of the structure of the quick release device in a disassembled state; Figure 4 It is a structural schematic diagram of an installation body according to an embodiment of the present application; Figure 5 for Figure 4 A schematic diagram of the structure of the installation body viewed from another angle; Figure 6 for Figure 5 A schematic diagram of the structure of the installation body viewed from another angle; Figure 7 This is a schematic structural diagram of a base according to an embodiment of the present application; Figure 8 It is a schematic structural diagram of a rotating member according to an embodiment of the present application; Fig. 9 Schematic diagram of the structure of an operating element according to an embodiment of the present application.

[0023] Description of reference numerals: 1-base; 11-center hole; 12-positioning groove; 13-first fixing hole; 2-installing body; 21-disc; 22-side wall; 221-second through hole; 23-cylinder; 231-first through hole; 232-installing hole; 233-annular groove; 234-positioning column; 24-positioning protrusion; 25-annular limit platform; 26-second fixing hole; 3-rotating member; 31-axial limit part; 32-slot; 4-gasket; 5-locking mechanism; 51-operating member; 511-pressing part; 512-stopping part; 513-conical structure; 514-positioning hole; 52-first elastic member; 53-locking member; 531-thrust pin; 532-second elastic member; 533-shaft retaining ring; 6-hole retaining ring; 7-pressing sheet. DETAILED DESCRIPTION

[0024] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0025] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0026] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0027] The present application provides a quick release device, such as Figure 1-Figure 9 As shown, the quick release device includes: a base 1, a mounting body 2, a rotating member 3 and a locking mechanism 5.

[0028] Among them, the rotating part 3 is configured to be connected to the installation body 2 and rotatable relative to the installation body 2. The rotating part 3 can be installed on the base 1 by rotation and removed from the base 1 by reverse rotation. When the rotating part 3 is installed on the base 1, the installation body 2 is limited to the base 1.

[0029] The locking mechanism 5 includes an operating member 51, a first elastic member 52 and a locking member 53; the operating member 51 is configured to switch from a first position to a second position when a force is applied, and to reset to the first position under the action of the first elastic member 52 when released; the locking member 53 is configured to be linked with the operating member 51, when the operating member 51 moves from the first position to the second position, the locking member 53 moves from the locked position to the unlocked position, and when the operating member 51 resets to the first position, the locking member 53 moves from the unlocked position to the locked position, wherein, in the locked position, the locking member 53 locks the rotating member 3, and in the unlocked position, the locking member 53 unlocks the rotating member 3.

[0030] The quick release device provided in the embodiment of the present application can be used to install the blades of an aircraft. During installation, the base 1 is installed on the driving end of the driving device, and the blades are installed on the installation body 2 connected to the rotating member 3. Then, a force is applied to the operating member 51, so that the operating member 51 moves from the first position to the second position, and the locking member 53 moves from the locked position to the unlocked position. At this time, the rotating member 3 can be connected to the base 1 by rotating it, and then the operating member 51 is released, and the operating member 51 is reset from the second position to the first position, and the locking member 53 moves to the locked position, so that the rotating member 3 is locked to prevent the rotating member 3 from reversing. In this way, the installation body 2 is limited to the base 1, so that the installation of the blades and the driving device is achieved through the quick release device. When removing the blades, a force is applied to the operating member 51 again, and the operating member 51 moves to the second position, and the locking member 53 moves to the unlocked position, and the rotating member 3 is unlocked. At this time, the rotating member 3 can be rotated in the opposite direction to remove the installation body 2 from the base 1, so as to achieve the removal of the blades and the driving device.

[0031] The quick release device provided in the present application can realize the rapid disassembly and assembly of the propeller blades. It only needs to move the operating member 51 from the first position to the second position, for example, by pressing the operating member 51 to move to the second position, and rotate the rotating member 3. The installation and removal of the propeller blades are simple, saving time and effort. Moreover, after the rotating member 3 is installed on the base 1, the rotating member 3 is locked by the locking mechanism 5 to prevent it from reversing, which can improve the stability and reliability of the installation of the propeller blades.

[0032] In addition, the quick-release device provided in the present application has a simple structure, a small size, and little effect on the dynamic balance of the blades, which effectively solves the problem in the prior art that the device for quickly installing blades has a large shape, which affects the balance of the blades when the parts are unevenly formed or installed asymmetrically.

[0033] It is understandable that the quick-release device is not limited to the installation of blades, but can also be used for other components that require quick installation and disassembly.

[0034] In one embodiment, Figure 1-Figure 3 As shown, the rotating member 3 is arranged around the installation body 2, and an axial limiting portion 31 is provided at one end of the rotating member 3 away from the base 1. The axial limiting portion 31 limits the installation body 2 axially in a direction away from the base 1 to prevent the installation body 2 from axially separating from the base 1.

[0035] The rotating member 3 can be a nut arranged around the installation body 2, and the rotating member 3 is installed on the base 1 through a thread. When the quick release device is used for the installation of the blades, the rotation direction of the rotating member 3 when installed on the base 1 can be set to be opposite to the rotation direction of the driving device, so that when the driving device drives the blades to rotate, the rotating member 3 will not loosen, and the second anti-loosening protection can be achieved. In addition, since the blades on both sides of the aircraft are counter-rotating, that is, the rotation directions of the blades on both sides are opposite, and the rotating member 3 of the quick release device of each blade is set to be opposite to the rotation direction of the driving device, the thread processing directions of the rotating members 3 of the quick release devices on both sides need to be opposite, thereby achieving the anti-mistake function of the installation of the blades on both sides of the aircraft.

[0036] It is understandable that the rotating member 3 can also be installed on the base using other structures. For example, the rotating member 3 and the base 1 are arranged to be connected together by rotation. The structure of connecting by rotation is a common technology used by technicians in this field and will not be described in detail here.

[0037] Figure 8 An embodiment is shown in which a rotating member 3 is configured as a nut. An axial limiting portion 31 is provided at the top end of the rotating member 3 (the end away from the base 1 ). The axial limiting portion 31 is a circular ring protruding radially inward along the circumference of the rotating member 3 . Figure 4-Figure 6 The installation body 2 in one embodiment is shown. The outer periphery of the installation body 2 is provided with an annular stopper 25. After the installation body 2 enters the rotating member 3 from the bottom end of the rotating member 3, the annular stopper 25 cooperates with the axial stopper 31 of the rotating member 3 (refer to Figure 3 ), which can prevent the installation body 2 from coming off the top of the rotating member 3, thereby preventing the installation body 2 from coming off the base 1 in the axial direction when the rotating member 3 is installed on the base 1. A gasket 4 can be arranged between the annular stopper 25 and the axial stopper 31, and the gasket 4 can buffer the assembly between the rotating member 3 and the installation body 2, and when the rotating member 3 is installed on the base 1, the installation body 2 can be better fastened to the base 1 by pressing the gasket 4.

[0038] In one embodiment, when the mounting body 2 is mounted on the base 1, the mounting body 2 is limited in the circumferential direction to prevent the mounting body 2 from rotating relative to the base 1. One of the mounting body 2 and the base 1 may be provided with a plurality of positioning grooves 12 arranged at intervals along the circumferential direction, and the other may be provided with a plurality of positioning protrusions 24 arranged at intervals along the circumferential direction. When the mounting body 2 is mounted on the base 1, the positioning protrusions 24 are inserted into the positioning grooves 12 one by one.

[0039] In one embodiment, one of the mounting body 2 and the base 1 is provided with a center hole 11 located in the center, and the other is provided with a positioning column 234 located in the center. When the mounting body 2 is installed on the base 1, the positioning column 234 is inserted into the center hole 11, which can ensure the concentricity of the mounting body 2 and the base 1.

[0040] refer to Figure 5-Figure 7 as well as Figure 2-Figure 3 In the example, the end of the installation body 2 facing the base 1 is provided with a central positioning column 234 and a plurality of positioning protrusions 24 arranged around the positioning column 234 in a circumferential direction, and the end of the base 1 facing the installation body 2 is provided with a central hole 11 for matching with the positioning column 234 and a positioning groove 12 corresponding to the positioning protrusions 24. Figure 7 It is shown that the multiple positioning grooves 12 of the base 1 are connected to the center hole 11. It is understandable that the center hole 11 and the positioning groove 12 can also be set on the installation body 2, and the positioning column 234 and the positioning protrusion 24 can be set on the base 1. When the installation body 2 is installed on the base 1 through the rotating member 3, the positioning column 234 is inserted into the center hole 11, and the positioning protrusion 24 is inserted into the positioning groove 12.

[0041] exist Figure 2-Figure 3 In the example, the axial limiting portion 31 of the rotating member 3 axially limits the mounting body 2 in the direction away from the base 1, and the mounting body 2 is limited in the circumferential direction relative to the base 1 by the cooperation of multiple positioning protrusions 24 and the positioning grooves 12, and the concentricity of the mounting body 2 and the base 1 is ensured by the cooperation of the positioning column 234 and the center hole 11. In this way, the installation of the mounting body 2 and the base 1 is stable and reliable, and the quick-release device is symmetrically arranged on the circumference. Therefore, when the blade is installed on the drive device through the quick-release device, the dynamic balance problem caused by uneven part molding or asymmetric installation on the blade can be avoided, and the stability of the blade operation is effectively improved.

[0042] In addition, Figure 2-Figure 3 In the example, the rotating member 3 is connected to the base 1 by a thread, the thread bears the axial force, and a gasket 4 is arranged between the circumferential limiting portion 31 of the rotating member 3 and the annular limiting boss 25 of the mounting body 2. When the rotating member 3 is connected to the base 1 by a thread, the mounting body 2 can be effectively fastened to the base 1 by pressing the gasket 4, and the mating surfaces between the two are tightly fitted without any gap, and the assembly is stable, thereby solving the problem of wear of parts caused by the swinging vibration of the blades due to the large assembly gap and the problem of unstable operation of the blades due to the assembly gap.

[0043] In one embodiment, the operating member 51 is configured to move from the first position to the second position by pressing. Figure 2-Figure 6 as well as Fig. 9The mounting body 2 is provided with a mounting hole 232, one end of the operating member 51 is provided with a pressing portion 511, and the other end is movably mounted in the mounting hole 232, and a positioning hole 514 is provided on the end surface of the operating member 51 mounted in the mounting hole 232, one end of the first elastic member 52 is mounted in the positioning hole 514, and the other end is pressed against the bottom of the mounting hole 232. In order to prevent the operating member 51 from slipping out of the mounting hole 232, an annular groove 233 may be provided on the inner wall of the mounting hole 232, a hole retaining ring 6 is provided in the annular groove 233, and the operating member 51 is provided with a stopper 512 that cooperates with the hole retaining ring 6, and the cooperation between the hole retaining ring 6 and the stopper 512 can prevent the operating member 51 from slipping out of the mounting hole 232. In addition, a cylinder 23 may be provided at the center position of the mounting body 2, and a mounting hole 232 is formed in the cylinder 23, and the bottom end of the cylinder 23 may be used as a positioning column 234 to cooperate with the center hole 11 of the base 1 for positioning. Since the locking member 53 is linked with the operating member 51 , the locking member 53 can be arranged to pass outward through the through hole on the cylinder 23 to achieve locking and unlocking of the rotating member 3 .

[0044] In one embodiment, Figure 1-Figure 3 as well as Figure 8 As shown, the rotating member 3 is provided with a plurality of slots 32 arranged at intervals along the circumference, and the slots 32 can be arranged on the inner circumference of the axial limiting portion 31 of the rotating member 3. The operating member 51 is located at the center of the rotating member 3, and at least two locking members 53 are arranged at intervals along the circumference around the operating member 51; the locking member 53 includes a pin 531 and a second elastic member 532, one end of the pin 531 is pressed against the operating member 31, and the other end is radially outward, and the second elastic member 532 is configured to apply a radially inward elastic force to the pin 531, so that the pin 531 is kept pressed against the operating member 31; wherein, when the operating member 51 is located at the first position, the pin 531 is pressed into the slot 32 by the operating member 51 and is in the locked position, so that the pin 531 locks the rotating member 3, and when the operating member 51 moves to the second position, the pin 531 is separated from the slot 32 and is in the unlocked position, so that the rotating member 3 is unlocked.

[0045] exist Figure 1-Figure 9 In the example of , the operating member 51 is configured to move from the first position to the second position by being pressed, that is, the operating member 51 moves to the second position when pressed, and moves to the first position when released. It is understandable that the operating member 51 can also move from the first position to the second position by, for example, being pulled, that is, the operating member 51 moves to the second position when pulled outward, and moves to the first position when released.

[0046] like Figure 2 and Fig. 9As shown, a conical structure 513 is provided on the operating member 51 , and a push pin 531 pushes on the conical structure 513 . The push pin 531 switches between the unlocking position and the locking position through the movement of the conical structure 513 .

[0047] Among them, along the direction of the pressing force exerted on the operating member 51, the cross-section of the conical structure 513 increases. When the operating member 51 is pressed to the second position, the ejector pin 531 moves to the position corresponding to the smaller cross-section of the conical structure 513. In this way, the ejector pin 531 can be radially contracted inwardly under the elastic force of the second elastic member 532 and disengage from the slot 32. When the operating member 51 is reset to the first position, the ejector pin 531 is radially pushed outwardly into the slot 32 by the conical structure 513.

[0048] It can be understood that when the operating member 51 is configured to move from the first position to the second position by being pulled, the cross-sectional size of the tapered structure 513 is changed accordingly.

[0049] It can also be understood that the structure that enables the ejector pin 531 to switch between the unlocked position and the locked position is not limited to the conical structure 513. A groove that slides with the ejector pin 531 can also be provided on the operating member 51, and the ejector pin 531 can be switched between the locked position and the unlocked position when it moves relative to the bottom surface of the groove by raising or lowering the bottom surface of the groove.

[0050] Figure 4-Figure 6 The structure of the installation body 2 in an embodiment is shown, and the installation body 2 includes a disk body 21 for mounting the component to be mounted, a side wall 22 arranged around the disk body 21, and a cylinder body 23 located at the center of the disk body 21. The cylinder body 23 is provided with a first through hole 231 corresponding to the ejector pin 531, and the side wall 22 is provided with a second through hole 221 corresponding to the ejector pin 531. The cylinder body 23 is formed with a mounting hole 232. Figure 2 and Figure 3 The operating member 51 is movably mounted in the mounting hole 232 to move between the first position and the second position along the mounting hole 232. One end of the ejector pin 531 passes through the first through hole 231 to push against the operating member 51, and the other end passes through the second through hole 221 to face the slot 32 of the rotating member 3. In other words, the ejector pin 531 is supported by the first through hole 231 and the second through hole 221 to move radially.

[0051] The disk 21 of the mounting body 2 is used to mount components to be mounted, such as blades. The disk 21 is provided with a plurality of second fixing holes 26. The blades can be fixed to the disk 21 by passing bolts through the second fixing holes 26. To more firmly mount the blades, the quick-release device may further include a pressing plate 7, which is placed on the side of the blades away from the disk 21, that is, the blades are located between the disk 21 and the blades 7. The bolts sequentially pass through the openings on the pressing plate 7 and the blades and the second fixing holes 26 of the disk 21 to fix the blades on the mounting body 2. In addition, the base 1 is provided with a first fixing hole 13, and the base 1 can be fixed to the component to be fixed by passing the bolts through the first fixing holes 13, for example, the component to be fixed is a drive device for mounting blades.

[0052] In order to install the second elastic member 532 so that the second elastic member 532 applies elastic force to the ejector pin 531, a shaft retaining ring 533 is provided on the ejector pin 531. The second elastic member 532 is a coil spring sleeved on the ejector pin 531. The second elastic member 532 is located between the shaft retaining ring 533 and the second through hole 221, and one end of the second elastic member 532 is pressed against the shaft retaining ring 533, and the other end is pressed against the peripheral wall of the second through hole 221.

[0053] Those skilled in the art will appreciate that the locking member 53 that can be linked with the operating member 51 to achieve locking and unlocking of the rotating member is not limited to the arrangement of the ejector pin 531 as described above, but may also be other structural forms. For example, the locking member 53 may be provided with an inclined surface, and when the operating member 51 is in the first position, the inclined surface is pushed to move the locking member 53 to the locked position, and when the operating member 51 is in the second position, the locking member 53 is retracted and is in the unlocked position.

[0054] In addition, in order to reduce the weight of the quick release device, the mounting seat 1, the mounting body 2, the rotating part 3 and the operating part 51 of the quick release device can be made of aluminum alloy. By reducing the weight of the quick release device, it is helpful to reduce the weight of the aircraft and reduce the impact of the quick release device on the dynamic balance of the blades.

[0055] The following is a specific example and combined with Figure 1-Figure 9 The structure in the figure describes the specific process of installing the blade on the driving device using the quick-release device.

[0056] The base 1 is fixed to the driving device so that the driving device can drive the base 1 to rotate.

[0057] The installation body 2 is connected to the rotating member 3 so that the annular limiting platform 25 of the installation body 2 is matched with the axial limiting portion 31 of the rotating member 3 , and then the blade is fixed to the installation body 2 .

[0058] The operating member 51 is pressed to move the operating member 51 from the first position to the second position. The ejector pin 531 moves radially inward under the action of the second elastic member 532 and disengages from the slot 32 of the rotating member 3. The rotating member 3 is in an unlocked state. At this time, the rotating member 3 can be rotated to be installed on the base 1. In this process, the positioning protrusion 24 of the mounting body 2 is matched with the positioning slot 12 of the base 1, and the positioning column 234 of the mounting body 2 is matched with the center hole 11 of the base 1. After the rotating member 3 is installed on the base 1, the operating member 51 is released. The operating member 51 is reset to the first position under the action of the first elastic member 52. The ejector pin 531 is pushed to be stuck in the slot 32 of the rotating member 3, so that the rotating member 3 is locked and cannot rotate in the opposite direction. Therefore, the blade is installed on the driving device through the quick release device.

[0059] When removing the blade, the operating member 51 is pressed again, and the operating member 51 moves from the first position to the second position again, and the ejector pin 531 moves radially inward to disengage from the slot 32, and the rotating member 3 is unlocked, so that the rotating member 3 can be rotated in the opposite direction, thereby realizing the removal of the rotating member 3 and the mounting body 2 from the base 1, and the blade is separated from the drive device.

[0060] An embodiment of the present application further provides a blade mounting assembly, including a blade, a drive device, and the quick-release device as described above, wherein the mounting body 2 of the quick-release device is fixedly connected to the blade, and the base 1 is connected to the drive end of the drive device.

[0061] An embodiment of the present application also provides an aircraft, comprising an aircraft body and at least two blade mounting assemblies as described above.

[0062] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0063] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features.

[0064] In the description of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A quick release device, characterized in that: include: Base, mounting body, rotating part and locking mechanism; The rotating member is connected to the installation body and is rotatable relative to the installation body. The rotating member can be installed on the base by rotating and can be removed from the base by reverse rotation. When the rotating member is installed on the base, the installation body is limited to the base. The locking mechanism includes an operating member, a first elastic member and a locking member; the operating member is configured to be able to switch from a first position to a second position when a force is applied, and to reset to the first position under the action of the first elastic member when released; the locking member is configured to be linked with the operating member, and when the operating member moves from the first position to the second position, the locking member moves from the locked position to the unlocked position, and when the operating member resets to the first position, the locking member moves from the unlocked position to the locked position, wherein, in the locked position, the locking member locks the rotating member, and in the unlocked position, the locking member unlocks the rotating member.

2. The quick release device according to claim 1, characterized in that: The rotating member is a nut arranged around the installation body, and the rotating member is connected to the base through threads.

3. The quick release device according to claim 1, characterized in that: The rotating member is arranged around the installation body, and an axial limiting portion is arranged at one end of the rotating member away from the base, and the axial limiting portion axially limits the installation body in a direction away from the base.

4. The quick release device according to claim 1, characterized in that: One of the mounting body and the base is provided with a plurality of positioning grooves spaced apart along the circumferential direction, and the other is provided with a plurality of positioning protrusions spaced apart along the circumferential direction. When the mounting body is mounted on the base, the positioning protrusions are inserted into the positioning grooves one by one.

5. The quick release device according to claim 1, characterized in that: One of the mounting body and the base is provided with a central hole located in the center, and the other is provided with a positioning column located in the center. When the mounting body is mounted on the base, the positioning column is inserted into the central hole.

6. The quick release device according to any one of claims 1 to 5, characterized in that: The rotating member is provided with a plurality of slots spaced apart along the circumferential direction, the operating member is located at the center of the rotating member, and at least two locking members are spaced apart along the circumferential direction around the operating member; The locking member includes a pin and a second elastic member, one end of the pin is pressed against the operating member, and the other end faces radially outward, and the second elastic member is configured to apply a radially inward elastic force to the pin; wherein, when the operating member is located at the first position, the pin is located in the slot and is in the locking position, and when the operating member moves to the second position, the pin is disengaged from the slot and is in the unlocking position.

7. The quick release device according to claim 6, characterized in that: The operating member comprises a conical structure, the ejector pin is pressed against the conical structure, and the ejector pin is switched between the unlocking position and the locking position through the movement of the conical structure.

8. The quick release device according to claim 6, characterized in that: The mounting body includes a disk body for mounting a part to be mounted, a side wall arranged around the disk body, and a cylinder body located at the center of the disk body, the cylinder body is provided with a first through hole corresponding to the ejector pin, the side wall is provided with a second through hole corresponding to the ejector pin, the operating part is movably mounted in the mounting hole formed in the cylinder body, one end of the ejector pin passes through the first through hole to push against the operating part, and the other end passes through the second through hole to face the card slot.

9. The quick release device according to claim 8, characterized in that: The ejector pin is provided with a shaft retaining ring, the second elastic member is a coil spring sleeved on the ejector pin, the second elastic member is located between the shaft retaining ring and the second through hole, and one end of the second elastic member is pressed against the shaft retaining ring, and the other end is pressed against the peripheral wall of the second through hole.

10. The quick release device according to any one of claims 1 to 5, characterized in that: The operating member is configured to be moved from the first position to the second position by pressing, the mounting body is provided with a mounting hole, one end of the operating member is provided with a pressing portion, and the other end is movably mounted in the mounting hole.

11. The quick release device according to claim 10, characterized in that: A positioning hole is arranged on the end surface of one end of the operating member installed in the installation hole, one end of the first elastic member is installed in the positioning hole, and the other end is pressed against the bottom of the installation hole.

12. A blade mounting assembly, characterized in that: It comprises a paddle, a driving device and a quick-release device as described in any one of claims 1 to 11, wherein the mounting body of the quick-release device is fixedly connected to the paddle, and the base is connected to the driving end of the driving device.

13. An aircraft, characterized in that: The invention comprises an aircraft body and at least two blade mounting assemblies as claimed in claim 12.

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