Buffering and damping device for undercarriage

Abstract

The utility model discloses an undercarriage buffering and damping device, relates to unmanned aerial vehicle undercarriage technical field, four-foot type undercarriage includes mounting seat, the surface of mounting seat is provided with a plurality of connecting groove, the both sides of mounting seat outer wall are both fixedly connected with extension frame, the both ends of each extension frame bottom are both fixedly connected with support foot, the support foot is connected with the support foot. The upper end of the outer wall of each supporting foot is provided with a horizontal through hole, the middle of the bottom end of each supporting foot is fixedly connected with a vertical threaded shaft, the bottom face of each supporting foot is connected with a rubber foot pad in an attached mode, a metal threaded sleeve is fixedly embedded in each rubber foot pad, and the inner wall of each metal threaded sleeve and the corresponding vertical threaded shaft are connected in an inserted mode and fastened in a threaded mode. The vertical threaded shafts are installed on the foot bottoms of the four-foot type undercarriage respectively, the vertical threaded shafts can be matched with and fasten the metal threaded sleeves respectively, the metal threaded sleeves are embedded in the rubber foot pads, when the rubber foot pads need to be disassembled, disassembly can be completed by directly rotating and disassembling the rubber foot pads, and replacement of the undercarriage buffer structure is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned aerial vehicle landing gear technical field, concretely relates to a landing gear buffer damping device. BACKGROUND

[0002] Four-foot landing gear is like four legs of unmanned aerial vehicle, provides stable support for fuselage, makes it safe to stop and land on uneven ground, rubber pad installed at the bottom of foot, it utilizes the elastic deformation of material itself, effectively absorbs and disperses impact energy in the landing moment, plays the key role of buffer damping, protects the internal precision device of fuselage.

[0003] The rubber pad at the bottom of four-foot landing gear is usually firmly installed at the foot through the mode of gluing, and since the rubber pad is easy to wear, it needs to be replaced in time during overhaul, and plastic crowbar and alcohol are needed to assist in peeling during replacement, then the bottom mounting point is cleaned again, so that oil stains or old glue residues do not affect the adhesion firmness of new foot pad, and the replacement steps are more troublesome; in addition, common landing gear has simple structure and single function, for example, four-foot landing gear supports vertical take-off and landing and hovering, is suitable for multi-rotor unmanned aerial vehicle, is not suitable for fixed-wing unmanned aerial vehicle with sliding function, and has poor universality, therefore, a landing gear buffer damping device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The purpose of the utility model can be realized by the following technical schemes:

[0005] A landing gear buffer damping device, comprising a four-foot landing gear, the lower end of the four-foot landing gear is provided with skids on both sides;

[0006] The four-foot landing gear comprises a mounting seat, a plurality of connecting grooves are formed in the surface of the mounting seat, the outer walls of the mounting seat are fixedly connected with extension frames on both sides, the bottom of each extension frame is fixedly connected with a support foot at both ends, a horizontal through hole is formed in the outer wall of each support foot at the upper end, and a vertical threaded shaft is fixedly connected to the bottom end of each support foot at the middle, a rubber foot pad is connected to the bottom surface of the support foot, a metal threaded sleeve is embedded and fixed in the rubber foot pad, and the inner wall of the metal threaded sleeve is inserted and threadedly fastened with the vertical threaded shaft.

[0007] As a further scheme of the utility model: the skids all comprise parallel rods, mounting grooves are formed in the top surface of each parallel rod on both sides, end blocks are fixedly connected to the ends of the parallel rods, square openings are formed in one side of each end block away from the middle of the parallel rod, circular holes are formed in the other side of each end block close to the middle of the parallel rod, and the square opening in the middle is connected with the circular hole in a penetrating manner.

[0008] As a further scheme of the utility model: the upper portion of each parallel rod is provided with a supporting rod, both ends of the supporting rod are fixedly connected with horizontal threaded shafts, both horizontal threaded shafts are respectively inserted into the circular hole, and the tail end of each horizontal threaded shaft extends into the square hole, the outer wall of the tail end of each horizontal threaded shaft is threadedly provided with a nut, and the end face of the nut abuts against the inner wall of the square hole.

[0009] As a further scheme of the utility model: the square hole is inserted with a hollow sleeve, the top portion of the hollow sleeve is provided with a positioning hole, the surface of the hollow sleeve away from the parallel rod is fixedly connected with a lug on both sides, and the inner wall of the hollow sleeve is inserted with the nut.

[0010] As a further scheme of the utility model: the top portion of each end block and the upper portion of the positioning hole are provided with a threaded hole, the inner wall of each threaded hole is inserted with a screw, and the bottom end of the screw is respectively inserted into the positioning hole.

[0011] As a further scheme of the utility model: the top portion of the parallel rod is connected with the bottom surface of the supporting foot, the inner portion of each mounting groove is respectively inserted with a vertical threaded shaft, and the inner diameter of the mounting groove is consistent with the outer diameter of the vertical threaded shaft.

[0012] As a further scheme of the utility model: the supporting rod is connected with the inner wall of the horizontal through hole, and the outer diameter of the supporting rod is consistent with the inner diameter of the horizontal through hole.

[0013] The utility model discloses the beneficial effects of:

[0014] The utility model discloses a four -foot type landing gear's foot bottom is installed vertical threaded shaft respectively, and each vertical threaded shaft can be respectively matched fastening metal thread sleeve, and metal thread sleeve is inlayed in rubber foot pad, when needing to dismantle rubber foot pad, directly rotating and unloading rubber foot pad can complete dismantling, and the convenient replacement of landing gear buffer structure is provided.

[0015] After the rubber foot pad is twisted and removed, the vertical threaded shaft exposed can be inserted and installed the skid structure, and then the four -foot type landing gear is changed into parallel double -rod type landing gear, so that the landing gear has the sliding function, and then the landing gear is not only adapted to multi -rotor unmanned aerial vehicle but also adapted to fixed -wing unmanned aerial vehicle, and the universality of the landing gear is improved.

[0016] When the skid is additionally installed at the bottom of the four -foot type landing gear, each rubber foot pad needs to be removed, and then the weight of the landing gear is reduced, the skid is fastened through the horizontal threaded shaft and the nut, the outside of the screw thread can be additionally provided with the hollow sleeve, and then the nut is avoided from being loosened by being touched and rotated by mistake, the skid is avoided from falling off due to vibration during the sliding of the landing gear, and the reliability of the device is improved. DRAWINGS

[0017] The utility model will be further described below with reference to the drawings.

[0018] Figure 1 It is the whole structure schematic diagram of four-foot landing gear of the utility model;

[0019] Figure 2 It is the structure schematic diagram of support foot of the utility model;

[0020] Figure 3 It is the explosion structure schematic diagram of skid of the utility model;

[0021] Figure 4 It is the structure schematic diagram of four-foot landing gear and skid of the utility model after fixing.

[0022] In the drawing: 1, four-foot landing gear;101, mounting seat;102, extension frame;103, support foot;104, horizontal through hole;105, vertical threaded shaft;106, rubber foot pad;107, metal threaded sleeve;2, skid;201, parallel rod;202, mounting groove;203, end block;204, square mouth;205, round hole;206, threaded hole;207, hollow sleeve;208, positioning jack;209, protruding block;210, screw;211, support rod;212, horizontal threaded shaft;213, nut. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] As shown in Figures 1-4 A landing gear buffer damping device, comprising four-foot landing gear 1, skid 2 is arranged on both sides of the lower end of four-foot landing gear 1;Four-foot landing gear 1 includes mounting seat 101, a plurality of connecting grooves are formed in the surface of mounting seat 101, the outer wall of mounting seat 101 is fixedly connected with extension frame 102 on both sides, the bottom of each extension frame 102 is fixedly connected with support foot 103 on both ends, the outer wall of each support foot 103 is fixedly connected with horizontal through hole 104 on the upper end, and the bottom end of each support foot 103 is fixedly connected with vertical threaded shaft 105 in the middle, rubber foot pad 106 is connected to the bottom surface of support foot 103, metal threaded sleeve 107 is embedded and fixed in the inside of rubber foot pad 106, the inner wall of metal threaded sleeve 107 is inserted and screwed with vertical threaded shaft 105, as shown in Figure 2 Rubber foot pad 106 can be made of neoprene material.

[0025] The sledge 2 comprises parallel rods 201, and mounting grooves 202 are formed on both sides of the top surface of each parallel rod 201, and end blocks 203 are fixedly connected to the ends of the parallel rods 201, and square holes 204 are formed on the side of each end block 203 away from the middle part of the parallel rod 201, and circular holes 205 are formed on the side of each end block 203 close to the middle part of the parallel rod 201, and the middle part of the square hole 204 is connected with the circular hole 205 in a penetrating manner, and a support rod 211 is arranged above each parallel rod 201, and horizontal threaded shafts 212 are fixedly connected to both ends of the support rod 211, and the two horizontal threaded shafts 212 are respectively inserted into the circular holes 205, and the ends of each horizontal threaded shaft 212 extend into the square hole 204, and a nut 213 is threadedly sleeved on the outer wall of the end of each horizontal threaded shaft 212, and the end surface of the nut 213 abuts against the inner wall of the square hole 204, as shown in the figure, the support rod 211 is inserted into the two end blocks 203, so that the support rod 211 supports the two parallel rods 201. Figure 4 As shown in the figure, the support rod 211 is inserted into the two end blocks 203, so that the support rod 211 supports the two parallel rods 201.

[0026] The square hole 204 is inserted into a hollow sleeve 207, and a positioning insertion hole 208 is formed in the middle part of the top surface of the hollow sleeve 207, and protruding blocks 209 are fixedly connected to the surfaces of the hollow sleeve 207 away from the parallel rods 201, and the middle part of the inner wall of the hollow sleeve 207 is inserted into the nut 213 in a matching manner, as shown in the figure, the hollow sleeve 207 is a cube, and the hollow sleeve 207 cannot be axially rotated in the square hole 204, and a regular hexagonal hole is formed in the middle part of the inner wall of the hollow sleeve 207 in a matching manner with the shape of the nut. Figures 3-4 As shown in the figure, the support rod 211 is inserted into the two end blocks 203, so that the support rod 211 supports the two parallel rods 201.

[0027] A threaded hole 206 is formed in the top surface of each end block 203 and directly above the positioning insertion hole 208, and a screw 210 is threadedly inserted into the inner wall of each threaded hole 206, and the bottom end of the screw 210 is inserted into the positioning insertion hole 208, as shown in the figure, the hollow sleeve 207 can be fixed in the square hole 204 through the screw 210. Figure 4 As shown in the figure, the support rod 211 is inserted into the two end blocks 203, so that the support rod 211 supports the two parallel rods 201.

[0028] The middle part of the top surface of the parallel rod 201 is connected with the bottom surface of the supporting foot 103 in a matching manner, the inner part of each mounting groove 202 is inserted into the vertical threaded shaft 105 in a matching manner, the inner diameter of the mounting groove 202 is consistent with the outer diameter of the vertical threaded shaft 105, the support rod 211 is connected with the inner wall of the horizontal through hole 104 in a penetrating manner, and the outer diameter of the support rod 211 is consistent with the inner diameter of the horizontal through hole 104, as shown in the figure, the parallel rod 201 can be made of carbon fiber composite material or engineering plastic material. Figure 4 As shown in the figure, the support rod 211 is inserted into the two end blocks 203, so that the support rod 211 supports the two parallel rods 201.

[0029] The working principle of the utility model is as follows:

[0030] When the skid 2 is installed at the bottom of the four-legged landing gear 1, each rubber foot pad 106 is first screwed, and under the extrusion of the threaded structure, the vertical threaded shaft 105 is separated from the metal threaded sleeve 107, then the support rod 211 is inserted into the two horizontal through holes 104, the round hole 205 of each end block 203 is installed outside the horizontal threaded shaft 212, the vertical threaded shaft 105 is inserted into the installation groove 202, until the two ends of the horizontal threaded shaft 212 are located in the two sides of the mouth 204, then the screw cap 213 is installed at the end of each horizontal threaded shaft 212, the relative fixation of the support rod 211 and the support foot 103 is realized, then the hollow sleeve 207 is inserted into the inside of the end block 203, the hollow sleeve 207 is sleeved outside the screw cap 213, so as to avoid the rotation of the screw cap 213, finally the screw 210 is screwed in the threaded hole 206, the lower end of the screw 210 is inserted into the positioning hole 208, the relative fixation of the hollow sleeve 207 and the end block 203 is realized.

[0031] The above describes one embodiment of the present application in detail, but the content described is only a preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. A landing gear buffer device, comprising a quadruped landing gear (1), the lower end of the quadruped landing gear (1) is provided with a skid (2) on both sides; characterized in that The quadruped landing gear (1) comprises a mounting seat (101), a plurality of connecting grooves are formed in the surface of the mounting seat (101), the outer wall of the mounting seat (101) is fixedly connected with an extension frame (102) on both sides, the bottom of each extension frame (102) is fixedly connected with a support foot (103) at both ends, a horizontal through hole (104) is formed in the outer wall of the top of each support foot (103), and a vertical threaded shaft (105) is fixedly connected to the middle of the bottom of each support foot (103), a rubber foot pad (106) is attached to the bottom surface of the support foot (103), a metal threaded sleeve (107) is embedded and fixed in the rubber foot pad (106), and the inner wall of the metal threaded sleeve (107) is inserted and threadedly fastened with the vertical threaded shaft (105).

2. The landing gear shock absorber according to claim 1, wherein Each skid (2) comprises a parallel rod (201), mounting grooves (202) are formed in the top surface of each parallel rod (201) on both sides, end blocks (203) are fixedly connected to the ends of the parallel rod (201), square openings (204) are formed in one side of each end block (203) away from the middle of the parallel rod (201), and circular holes (205) are formed in the other side of each end block (203) close to the middle of the parallel rod (201), and the middle of the square opening (204) is connected with the circular hole (205).

3. The landing gear shock absorber according to claim 2, wherein A support rod (211) is arranged above each parallel rod (201), horizontal threaded shafts (212) are fixedly connected to both ends of the support rod (211), the two horizontal threaded shafts (212) are respectively inserted into the circular hole (205), the ends of each horizontal threaded shaft (212) extend into the square opening (204), and a nut (213) is threadedly sleeved on the outer wall of the end of each horizontal threaded shaft (212), and the end surface of the nut (213) abuts against the inner wall of the square opening (204).

4. The landing gear shock absorber device according to claim 3, wherein A hollow sleeve (207) is inserted into the square opening (204), a positioning insertion hole (208) is formed in the middle of the top surface of the hollow sleeve (207), and protruding blocks (209) are fixedly connected to the surfaces of the hollow sleeve (207) away from the parallel rod (201) on both sides, and the middle of the inner wall of the hollow sleeve (207) is inserted into the nut (213) in a matched mode.

5. The landing gear shock absorber device according to claim 4, wherein A threaded hole (206) is formed in the top surface of each end block (203) directly above the positioning insertion hole (208), a screw (210) is inserted into the inner wall of each threaded hole (206) in a threaded mode, and the bottom end of the screw (210) is inserted into the positioning insertion hole (208) in a matched mode.

6. A landing gear shock absorber device according to claim 5, wherein The middle of the top surface of the parallel rod (201) is attached to the bottom surface of the support foot (103), each mounting groove (202) is inserted into the vertical threaded shaft (105) in a matched mode, and the inner diameter of the mounting groove (202) is consistent with the outer diameter of the vertical threaded shaft (105).

7. The landing gear shock absorber device according to claim 6, wherein The support rod (211) is connected through the inner wall of the horizontal through hole (104), and the outer diameter of the support rod (211) is consistent with the inner diameter of the horizontal through hole (104).

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