Worm landing gear

Abstract

The utility model discloses a worm undercarriage which comprises an undercarriage shell, a driving device, a pushing device and a quick-release foot stool, a motor mounting part and a worm mounting part are sequentially arranged in the undercarriage shell from left to right, the motor mounting part is communicated with the worm mounting part, a fixing pin is arranged in the worm mounting part, the driving device is arranged in the motor mounting part, and the pushing device is arranged in the quick-release foot stool. The pushing device is arranged in the worm mounting part, one end of the driving device is connected with the upper end of the pushing device, the lower end of the pushing device is fixedly connected with the quick-release foot stool, the pushing device is divided into a crank arm part and a fixing part from top to bottom, the crank arm part and the fixing part are rotationally mounted in the worm mounting part through fixing pins, and the driving device drives the crank arm part to move left and right. And the fixing part drives the quick-release foot stool to upwarp or fall. The landing requirement of the unmanned aerial vehicle is met; the pushing device can be conveniently driven by the driving device to fold and unfold, the worm undercarriage is simply, conveniently and rapidly folded and unfolded, and the folding and unfolding efficiency of the unmanned aerial vehicle undercarriage is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned plane technical field, concretely relates to a worm landing gear. BACKGROUND

[0002] In recent years, with the extensive use of unmanned planes in various fields, the development of unmanned planes has caused an unprecedented wave. When the unmanned plane is flying, the landing gear does not participate in bearing the full machine flight load, but in the two most critical stages of take-off and landing, the safety of the unmanned plane mainly relies on the effective work of the landing gear. The stability and stowability of the unmanned plane landing gear are the common needs of unmanned plane players.

[0003] A worm gear transmission retractable landing gear disclosed by Chinese patent CN202211101905.9 includes a mounting frame, a motor and a worm located on one side of the motor are arranged in the mounting frame, a first synchronous pulley is arranged on the output end of the motor, a second synchronous pulley is arranged on the worm and located outside the mounting frame, and a synchronous belt is connected between the second synchronous pulley and the first synchronous pulley. A worm gear is also engaged on the worm, a transmission shaft is arranged at the center of the worm gear, a retractable rocker arm is arranged on the transmission shaft, a steering assembly is arranged on the retractable rocker arm, a buffer and a buffer outer frame located on one side of the buffer are arranged on the steering assembly, a wheel rocker arm is rotatably connected to the buffer and the buffer outer frame, and a wheel is rotatably connected to the wheel rocker arm. The invention can realize the take-off and landing taxiway deviation correction function by assembling the mounting frame, the worm, and the steering assembly, but the structure of the invention is relatively complex, the stability is relatively weak, multiple synchronous pulleys are needed to realize the landing gear retraction, the landing gear retraction steps are relatively complicated, and the landing gear retraction time is relatively long. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to overcome the defects in the above background technology, and provide a worm landing gear. The utility model can meet the actual landing needs of unmanned planes. By tightly assembling the landing gear shell, the driving device, the pushing device, and the quick-release foot frame, the driving device drives the pushing device to move in the landing gear shell, the pushing device is raised or lowered to the maximum limit, the quick-release foot frame is retracted or extended, the worm landing gear is extended or retracted, and the landing needs of the unmanned plane are met. The driving device is connected with the pushing device, the driving device can conveniently drive the pushing device to retract or extend, the worm landing gear is retracted or extended simply and quickly, and the retracting and extending efficiency of the unmanned plane landing gear is improved.

[0005] In order to achieve the above object, the utility model provides a worm landing gear, landing gear shell, drive arrangement, pusher and quick detachable foot stand, motor installation department and worm installation department are sequentially arranged in the landing gear shell from left to right, the motor installation department and the worm installation department are communicated, the worm installation department is provided with fixed pin, the drive arrangement is located in the motor installation department, the pusher is located in the worm installation department, one end of the drive arrangement is connected with the upper end of the pusher, the lower end of the pusher is fixedly connected with the quick detachable foot stand, the pusher is divided into curved arm part and fixed part from top to bottom, the curved arm part and the fixed part are rotatably installed in the worm installation department through the fixed pin, the drive arrangement drives the curved arm part to move left and right, and the fixed part drives the quick detachable foot stand to be raised or to fall.

[0006] Further, the landing gear shell further includes a fixed groove, the motor installation department and the worm installation department are provided with a first connecting window at one end, the fixed groove and the first connecting window are on the same horizontal line, and a support rod sliding groove and a first fixed counterbore are arranged on the side wall of the worm installation department. By arranging the first connecting window, the output end of the drive arrangement can be connected with the pusher through the first connecting window when the drive arrangement is installed in the motor installation department. The drive arrangement can be stably fixed in the landing gear shell through the cooperation of the first connecting window and the fixed groove. The support rod sliding groove and the first fixed counterbore are arranged on the side wall of the worm installation department, the output end of the drive arrangement can move on the support rod sliding groove, and the movement direction of the output end is limited. The fixed pin can be fixed in the landing gear shell through the first fixed counterbore, and provides a mounting basis for fixing the pusher in the landing gear shell.

[0007] Further, the landing gear shell further includes a fixed plate, and the fixed plate is arranged on the side edge of the top surface of the landing gear shell. The fixed plate on the landing gear shell can fix the landing gear on the unmanned aerial vehicle.

[0008] Furthermore, the drive device includes a worm power source fixed within the motor mounting portion, a screw extending outward from the output end of the worm power source, a push rod sleeved on the screw, the push rod being perpendicular to the screw and in transmission connection with the push device, and the end of the screw away from the worm power source extending into the fixed groove. The screw at the output end of the worm power source and the push rod sleeved on the screw drive the push device to shift within the landing gear housing, thereby achieving the retraction and extension of the quick-release tripod.

[0009] Furthermore, the drive device further includes a first bearing and a second bearing, each of which is rotatably connected to the ends of the lead screw, with the first bearing being fixed in the first connecting window and the second bearing being fixed in the fixing groove. The first and second bearings are rotatably connected at both ends of the lead screw, and the first and second bearings are fixed in the first connecting window and the fixing groove, respectively, to prevent the lead screw from shifting when rotating in the landing gear housing.

[0010] Furthermore, a first fixing groove and a second fixing groove are provided on the top of the curved arm portion, the screw rod is placed in the second fixing groove, and the push rod is placed in the first fixing groove.

[0011] Furthermore, the quick-release tripod comprises a tripod barrel and a quick-release device. The tripod barrel is open downwards, the top surface of the tripod barrel is provided with a second fixing countersunk hole, the bottom surface of the fixing portion is provided with a connecting hole corresponding to the second fixing countersunk hole, and the quick-release device is fixed to the side wall of the bottom end of the tripod barrel. The second fixing countersunk hole and the fixing portion are connected to allow the pushing device and the quick-release tripod to be connected together, thereby realizing the control of the quick-release tripod by the pushing device.

[0012] Furthermore, the quick-release device includes a quick-release base and a quick-release grip. The quick-release base is fixed to one side of the tripod barrel. A mounting gap is provided on the tripod barrel in the middle of the quick-release base. The quick-release grip is integrally provided and connected to the quick-release base. By changing the position of the quick-release grip within the quick-release base, the tripod barrel can be tightened by reducing the mounting gap.

[0013] The beneficial effects of the present invention include: meeting the actual take-off and landing needs of the UAV, by tightly assembling the landing gear shell, the driving device, the pushing device and the quick-release tripod and other devices, and driving the pushing device to move in the landing gear shell through the driving device, so that the pushing device is tilted or dropped and reaches the maximum limit, thereby realizing the retraction and extension of the quick-release tripod, and the extension or contraction of the worm landing gear to meet the landing needs of the UAV; by connecting the driving device with the pushing device, the driving device can conveniently drive the pushing device to be retracted and extended, thereby realizing simple and fast retraction and extension of the worm landing gear, and improving the retraction and extension efficiency of the UAV landing gear. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of a worm landing gear in the embodiment of the utility model;

[0015] Figure 2 is a structural schematic view of a landing gear shell in the embodiment of the utility model;

[0016] Figure 3 is a structural schematic view of a driving device in the embodiment of the utility model;

[0017] Figure 4 is a structural schematic view of a pushing device in the embodiment of the utility model;

[0018] Figure 5 is a structural schematic view of a quick-release foot support in the embodiment of the utility model;

[0019] Reference signs: 1 landing gear shell; 2 driving device; 3 pushing device; 4 quick-release foot support; 11 fixed pin; 12 motor mounting portion; 13 worm mounting portion; 131 support rod sliding groove; 132 first fixed counterbore; 14 fixed groove; 15 first connecting window; 17 fixed plate; 21 worm power source; 22 screw rod; 23 first bearing; 24 second bearing; 25 pushing rod; 31 curved arm portion; 32 fixed portion; 321 connecting hole; 33 first fixed groove; 34 second fixed groove; 41 foot support barrel; 42 quick-release device; 43 second fixed counterbore; 44 quick-release base; 45 quick-release handle; 46 installation gap; DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved in the embodiments of the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be for fixing or for circuit communication.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0023] In addition, the terms "first", "second" are only used for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0024] Please refer to Figure 1 , Figure 2 and Figure 4 , in the embodiment, a worm landing gear is disclosed, which comprises a landing gear shell 1, a driving device 2, a pushing device 3 and a quick-release foot 4. A motor mounting portion 12 and a worm mounting portion 13 are sequentially arranged in the landing gear shell 1 from left to right. The motor mounting portion 12 and the worm mounting portion 13 are communicated. A fixing pin 11 is arranged in the worm mounting portion 13. The driving device 2 is arranged in the motor mounting portion 12. The pushing device 3 is arranged in the worm mounting portion 13. One end of the driving device 2 is connected with the upper end of the pushing device 3. The lower end of the pushing device 3 is fixedly connected with the quick-release foot 4. The pushing device 3 is divided into a curved arm portion 31 and a fixed portion 32 from top to bottom. The curved arm portion 31 and the fixed portion 32 are fixed in the worm mounting portion 13 through the fixing pin 11. The driving device 2 drives the curved arm portion 31 to move left and right, so that the fixed portion 32 drives the quick-release foot 4 to be raised or dropped. The top of the curved arm portion 31 is provided with a first fixing groove 33 and a second fixing groove 34. A lead screw 22 is arranged in the second fixing groove 34. A pushing rod 25 is arranged in the first fixing groove 33.

[0025] The landing gear shell 1 is divided into a motor mounting portion 12 and a worm mounting portion 13, the driving device 2 is arranged in the motor mounting portion 12, the pushing device 3 is arranged in the worm mounting portion 13, the pushing device 3 is divided into a curved arm portion 31 and a fixed portion 32 from top to bottom, the fixed portion 32 is fixedly connected with the quick release foot 4 by connecting the driving device 2 with the curved arm portion 31, that is, by placing the lead screw 22 in the second fixed groove 34 and placing the pushing rod 25 in the first fixed groove 33, the curved arm portion 31 can be pushed back and forth in the landing gear shell 1 by the driving device 2, the curved arm portion 31 drives the fixed portion 32 to move up or down and reach the maximum limit, so that the quick release foot 4 is extended out of the landing gear shell 1 or retracted inwards, the quick release foot 4 is quickly extended to play a supporting role when the unmanned aerial vehicle lands, and the quick release foot 4 is quickly retracted when the unmanned aerial vehicle takes off, the quick release foot 4 can be quickly retracted and extended by the driving device 2 driving the pushing device 3, the worm landing gear is retracted and extended simply and quickly, and the efficiency of retracting and extending the unmanned aerial vehicle landing gear is improved.

[0026] Please refer to Figure 2 In specific examples, the landing gear shell 1 further comprises a fixed groove 14, the motor mounting portion 12 is provided with a first connecting window 15 at one end connected with the worm mounting portion 13, the fixed groove 14 is on the same horizontal line as the first connecting window 15, and the worm mounting portion 13 is provided with a support rod sliding groove 131 and a first fixed counterbore 132 on the side wall; the landing gear shell 1 further comprises a fixed plate 17 arranged on the top side of the landing gear shell 1; by arranging the first connecting window 15, the output end of the driving device 2 can pass through the first connecting window 15 and be connected with the pushing device 3 when the driving device 2 is installed in the motor mounting portion 12, the driving device 2 is stably fixed in the landing gear shell 1 by cooperation of the first connecting window 15 and the fixed groove 14, the support rod sliding groove 131 is arranged on the side wall of the worm mounting portion 13, the pushing rod 25 sleeved on the lead screw 22 can move left and right in the worm mounting portion 13 through the support rod sliding groove 131, and the pushing rod 25 is limited by the support rod sliding groove 131 to prevent position deviation when moving left and right, so as to ensure the stability of the worm landing gear; the fixed plate 17 is arranged on the top of the landing gear shell 1 to provide necessary installation conditions for installing the worm landing gear on the unmanned aerial vehicle; the first fixed counterbore 132 is arranged on the side wall of the worm mounting portion 13, and the fixed pin 11 is inserted into the first fixed counterbore 132 to provide installation conditions for fixing the pushing device 3 in the landing gear shell 1.

[0027] Please refer to Figure 3In the specific example, the driving device 2 comprises a worm power source 21 fixed in the motor mounting portion 12, a lead screw 22 extending outward from the output end of the worm power source 21, a push rod 25 sleeved on the lead screw 22, the push rod 25 being perpendicular to the lead screw 22 and the push rod 25 being in transmission connection with the pushing device 3, and the end of the lead screw 22 away from the worm power source 21 being fixed in the fixed groove 14. The driving device 2 further comprises a first bearing 23 and a second bearing 24, the first bearing 23 and the second bearing 24 being respectively in rotational connection with the two ends of the lead screw 22, the first bearing 23 being fixed in the first connecting window 15, and the second bearing 24 being fixed in the fixed groove 14. The lead screw 22 and the push rod 25 on the output end of the worm power source 12 are connected with the curved arm portion 31, the lead screw 22 is driven to rotate by the worm power source 12, the curved arm portion 31 is driven to move left and right when the push rod 2 moves left and right, and the lead screw 22 is fixed in the first connecting window 15 and the fixed groove 14 through the first bearing 23 and the second bearing 24 connected with the lead screw 22, so as to prevent the lead screw 22 from being deviated in position when rotating and ensure the stable operation of the worm landing gear device.

[0028] Please refer to Figure 5 In the specific example, the quick-release foot support 4 comprises a foot support barrel 41 and a quick-release device 42. The foot support barrel 41 is downwardly open, the top surface of the foot support barrel 41 is provided with a second fixed counterbore 43, the bottom surface of the fixed portion 32 is provided with a connecting hole 321 corresponding to the second fixed counterbore 43, and the quick-release device 42 is fixed to the bottom end side wall of the foot support barrel 41. The quick-release device 42 comprises a quick-release base 44 and a quick-release handle 45. The quick-release base 44 is fixed to one side of the foot support barrel 41, and an installation gap 46 is arranged on the foot support barrel 41 and located in the middle of the quick-release base 44. The quick-release handle 45 is integrally arranged and connected to the quick-release base 44. By arranging the foot support barrel 41 and the quick-release device 42, the equipment can be installed by using the foot support barrel 41, and fixed by using the quick-release device 42. The overall structure of the worm landing gear can be widened, the worm landing gear can be installed based on the actual situation, the versatility of the worm landing gear is improved, and the use efficiency is improved. The quick-release device 42 comprises the quick-release base 44 and the quick-release handle 45. When the foot support barrel 41 is installed, the position of the quick-release handle 45 in the quick-release base 44 is changed, the width of the installation gap 46 is changed, the installed equipment is fixed, the quick-release and quick-installation of the installed equipment are realized, and the work efficiency is improved.

[0029] The landing gear shell 1 is divided into a motor mounting portion 12 and a worm mounting portion 13, the worm power source 21 is mounted into the motor mounting portion 12, the pushing device 3 is mounted into the worm mounting portion 13, the pushing device 3 is divided into a curved arm portion 31 and a fixed portion 32, the lead screw 22 is outwardly extended through the output end of the worm power source 21, the first bearing 23 and the second bearing 24 are respectively rotationally connected to the two ends of the lead screw 22, and the lead screw 22 is fixed on the first connecting window 15 and the fixed groove 14 through the first bearing 23 and the second bearing 24, meanwhile, the lead screw 22 is sleeved with the pushing rod 25, the lead screw 22 and the pushing rod 25 are respectively placed into the first fixed slot 33 and the second fixed slot 34 on the curved arm portion 31, the pushing rod 25 on the lead screw 22 is driven to slide forward and backward in the support sliding groove 131 by the rotation of the lead screw 22 driven by the worm power source 21, so as to drive the curved arm portion 31 connected with the pushing rod 25 to slide forward and backward, when the curved arm portion 31 moves left and right, the fixed portion 32 is driven to move up and down and reach the maximum limit, so as to make the quick detachable leg 4 extend outward from the bottom of the landing gear shell 1 or shrink inward, so as to extend the quick detachable leg 4 to play a supporting role when the unmanned aerial vehicle lands, and shrink the quick detachable leg 4 when the unmanned aerial vehicle takes off, so as to realize the simple and quick extension and retraction of the worm landing gear, and improve the extension and retraction efficiency of the unmanned aerial vehicle landing gear.

[0030] The above is a further detailed description of the present application in combination with specific / preferred embodiments, and cannot be deemed as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, they can make several substitutions or modifications to the described embodiments, and these substitutions or modifications shall be deemed as falling within the protection scope of the present application. In the description of the present application, the description of the reference terms "an embodiment", "some embodiments", "a preferred embodiment", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the case of not contradicting each other, the skilled person in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples. Although the embodiments of the present application and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made in the present application without departing from the protection scope of the patent application.

Claims

1. A worm gear landing gear, comprising a landing gear housing, a drive device, a propulsion device, and a quick-release tripod, characterized in that: A motor mounting portion and a worm mounting portion are sequentially provided in the landing gear housing from left to right, the motor mounting portion and the worm mounting portion are communicated with each other, a fixing pin is provided in the worm mounting portion, the driving device is provided in the motor mounting portion, the pushing device is provided in the worm mounting portion, one end of the driving device is connected to the upper end of the pushing device, and the lower end of the pushing device is fixedly connected to the quick-release tripod, the pushing device is divided into a curved arm portion and a fixed portion from top to bottom, the curved arm portion and the fixed portion are rotatably mounted in the worm mounting portion through the fixing pin, the driving device drives the curved arm portion to move left and right, so that the fixed portion drives the quick-release tripod to tilt up or down.

2. The worm gear landing gear according to claim 1, characterized in that: The landing gear housing also includes a fixing groove, a first connecting window is provided at one end where the motor mounting portion is connected to the worm mounting portion, the fixing groove and the first connecting window are on the same horizontal line, and a support rod slide groove and a first fixing countersunk hole are provided on the side wall of the worm mounting portion.

3. The worm gear landing gear according to claim 1, wherein: The landing gear shell further comprises a fixing plate, which is arranged on a side edge of the top surface of the landing gear shell.

4. The worm gear landing gear according to claim 2, wherein: The driving device includes a worm power source fixed in the motor mounting portion, a screw rod extending outward from the output end of the worm power source, a push rod sleeved on the screw rod, the push rod is perpendicular to the screw rod and the push rod is transmission-connected to the pushing device, and the end of the screw rod away from the worm power source extends into the fixed groove.

5. The worm gear landing gear according to claim 4, characterized in that: The driving device further includes a first bearing and a second bearing, which are rotatably connected to both ends of the screw rod respectively. The first bearing is fixed in the first connecting window, and the second bearing is fixed in the fixing groove.

6. The worm gear landing gear according to claim 4, characterized in that: A first fixing groove and a second fixing groove are provided on the top of the curved arm portion. The screw rod is placed in the second fixing groove, and the push rod is placed in the first fixing groove.

7. The worm gear landing gear according to claim 1, wherein: The quick-release tripod includes a tripod barrel and a quick-release device. The tripod barrel is set to open downward, and the top surface of the tripod barrel is provided with a second fixing countersunk hole. The bottom surface of the fixing part is provided with a connecting hole corresponding to the second fixing countersunk hole. The quick-release device is fixed to the side wall of the bottom end of the tripod barrel.

8. The worm gear landing gear according to claim 7, characterized in that: The quick-release device includes a quick-release base and a quick-release grip. The quick-release base is fixed to one side of the tripod barrel. An installation gap is provided on the tripod barrel in the middle of the quick-release base. The quick-release grip is integrally arranged and connected to the quick-release base.

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