A skid type landing gear drop test device

Abstract

The utility model discloses a skid type undercarriage fall shock experiment device relates to test device technical field, aims at solving current punch equipment and clamping assembly double -drive different step, easy to cause the technical problem of structural damage, including undercarriage body, joint component, hoist mechanism, the carrying plate and connecting component, the carrying plate upper end surface is equipped with counterweight, the undercarriage body includes the arch bridge spare fixed in the lower side of the both ends of carrying plate, the horizontal bar of connecting two arch bridge spare same end and the tee joint fixed in horizontal bar and arch bridge spare, the hoist mechanism includes the hoist plate in the upper side of carrying plate, the pressing plate fixed in the lower side of hoist plate both ends and the inclined pressing end of opening in the bottom of pressing plate, the connecting component includes the hydraulic mechanism fixed in the lower side of hoist plate, the box body fixed in the lower end of hydraulic mechanism and through the arm of exhibition of hinge rotation installation in the front side of box body. The utility model has the advantages of single -drive two -stage stroke switching clamping state, prevents the punch damage.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically, to a skid-type landing gear drop test device. Background Technology

[0002] The UAV landing gear drop test is a core test simulating actual landing impact, directly verifying the energy absorption efficiency of the buffer mechanism, the structural impact resistance, and landing stability. It is a crucial step in landing gear design verification and optimization. The experiment needs to accurately reproduce the "vertical landing impact" scenario and quantitatively evaluate core performance indicators by controlling parameters such as drop height and load.

[0003] After the production of UAV landing gear, sampling inspection is required, followed by drop tests to evaluate the core performance indicators of the landing gear. Existing testing devices use a single-point stamping method to provide initial power to the landing gear, simulating the impact intensity of a UAV landing. To ensure effective separation of the landing gear from the fixed components during stamping, existing devices require two drive structures for multi-point control. Inaccurate equipment adjustments can easily cause stamping damage, resulting in poor practicality. Therefore, we propose a skid-type landing gear drop test device. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a skid-type landing gear drop test device to solve the technical problem that the current stamping equipment and clamping components are not synchronized, which can easily cause structural damage.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a skid-type landing gear drop test device, including a landing gear body, a locking assembly, a hoisting mechanism, a mounting plate, and a connecting assembly. The upper surface of the mounting plate is provided with a counterweight. The landing gear body includes arch bridge members fixed to the lower sides of both ends of the mounting plate, a crossbar connecting the same end of the two arch bridge members, and a tee sleeve fitted and fixed to the crossbar and the arch bridge members. The landing gear body is sled-shaped. The locking assembly includes an outer arc member spliced ​​on the arch bridge member and a hoisting member, as well as a side slot opened at the upper end of the hoisting member. The hoisting mechanism includes a hoisting plate located on the upper side of the mounting plate, pressure plates fixed to the lower sides of both ends of the hoisting plate, and an inclined pressure end opened at the bottom of the pressure plate. The connecting assembly includes a hydraulic mechanism fixed to the lower side of the hoisting plate, a box fixed to the lower end of the hydraulic mechanism, and a boom mounted on the front side of the box via a hinge. The boom has an L-shaped bending design and is locked in the side slot.

[0006] Preferably, a connecting block is sleeved and fixed in the middle of the arch bridge component, and the upper end of the connecting block is fixed to the mounting plate by bolts.

[0007] Preferably, the bottom of the lifting component is provided with a claw end, and the middle of the claw end is provided with a mating interface. The end face of the lifting component is provided with a slot. The outer arc component is semi-arc-shaped, and the lower end of the outer arc component is provided with an insertion end. The upper end of the outer arc component is provided with a insert, and the insert is inserted into the slot. The barb of the insertion end is engaged in the mating interface.

[0008] Preferably, springs are symmetrically distributed inside the box, the bent part of the extension arm is fixed with a pressure surface, and the lower end of the inclined pressure end is connected to the inclined part of the pressure surface, and the outer end of the spring is fixedly connected to the end face of the pressure surface.

[0009] Preferably, a stamping head is fixed at the lower end of the box body, and the stamping head is attached to the upper surface of the mounting plate, and the distance between the top of the lifting component and the mounting plate is five centimeters.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. When this utility model is working, the hydraulic mechanism drives the box to rise. At this time, the inclined pressure end squeezes the pressure surface, causing the arm to open outward. The arm limiting surface and the side bayonet are misaligned and separated. At this time, the mounting plate and the landing gear lose the limiting gravity and fall. Then the hydraulic mechanism quickly impacts outward. The hydraulic mechanism drives the punching head through the box to generate a rapid impact force on the mounting plate. By accelerating the impact, the impact force of the UAV is simulated. The hydraulic mechanism controls the two-stage operation of rising and falling first, so that the locking mechanism is separated before the impact force is applied, thus completing the effective impact detection.

[0011] 2. The snap-fit ​​assembly of this utility model adopts a double connection design. The hook claw end cooperates with the outer arc part to clamp and fix the middle part of the arch bridge part, and the locking and positioning maintains the connection stability. The upper end of the hoisting part is connected to the boom through the side buckle. The boom limiting hoisting part keeps the landing gear body in a suspended state. The snap-fit ​​assembly facilitates the convenient disassembly and assembly of the landing gear body, reduces the difficulty of replacement operation, and ensures effective limiting when locking, reducing the difficulty of operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the mounting plate structure of this utility model; Figure 3 This is a schematic diagram of the unfolded state of this utility model; Figure 4 This is a schematic diagram of the hoisting mechanism of this utility model; Figure 5 This is a schematic diagram of the snap-fit ​​assembly of this utility model; Figure 6 This is a schematic diagram of the connection component of this utility model; Figure 7 This is a schematic diagram of the extendable arm structure of this utility model.

[0013] The following are the labeling instructions in the diagram: 1. Landing gear body; 101. Crossbar; 102. Arch bridge component; 103. Connecting block; 104. T-joint; 2. Snap-fit ​​assembly; 201. Outer arc component; 202. Insert plate; 203. Insertion end; 204. Claw end; 205. Slot; 206. Lifting component; 207. Side bayonet; 208. Docking interface; 3. Lifting mechanism; 301. Lifting plate; 302. Pressure plate; 303. Inclined pressure end; 4. Mounting plate; 401. Counterweight block; 5. Connecting assembly; 501. Pressure surface; 502. Extended arm; 503. Spring; 504. Stamping head; 505. Box body; 506. Hydraulic mechanism. Detailed Implementation

[0014] like Figures 1 to 4 As shown, this utility model relates to a skid-type landing gear drop test device, including a landing gear body 1, a snap-fit ​​assembly 2, a hoisting mechanism 3, a mounting plate 4, and a connecting assembly 5. The upper surface of the mounting plate 4 is provided with a counterweight 401. The landing gear body 1 includes arch bridge components 102 fixed to the lower sides of both ends of the mounting plate 4, a crossbar 101 connecting the same end of the two arch bridge components 102, and a three-way sleeve 104 sleeved and fixed to the crossbar 101 and the arch bridge components 102. The frame 1 is sled-shaped. The snap-fit ​​assembly 2 includes an outer arc member 201 and a lifting member 206 spliced ​​on the arch bridge member 102, and a side snap-fit ​​207 opened on the upper end of the lifting member 206. A connecting block 103 is sleeved and fixed in the middle of the arch bridge member 102, and the upper end of the connecting block 103 is fixed to the mounting plate 4 by bolts. The bottom of the lifting member 206 is provided with a claw end 204, and a mating interface 208 is opened in the middle of the claw end 204. The end face of the lifting member 206 The device has a slot 205, an outer arc member 201 that is semi-arc-shaped, an insertion end 203 at the lower end of the outer arc member 201, and a insert 202 at the upper end of the outer arc member 201. The insert 202 is inserted into the slot 205, and the barb of the insertion end 203 is engaged in the interface 208. During operation, the hydraulic mechanism 506 drives the box body 505 to rise. At this time, the inclined pressure end 303 squeezes the pressure surface 501, causing the arm 502 to open outward. The limiting surface of the arm 502 is misaligned and separated from the side slot 207. At this time, the mounting plate 4 and the landing gear body 1 lose the limiting gravity and fall. Then, the hydraulic mechanism 506 quickly impacts outward. The hydraulic mechanism 506 drives the stamping head 504 through the box body 505 to generate a rapid impact force on the mounting plate 4. The accelerated impact simulates the impact force of the UAV. The hydraulic mechanism 506 controls the two-stage operation of rising and falling, so that the locking mechanism is separated before the impact force is applied, thus completing the effective impact detection.

[0015] like Figures 3 to 7As shown, this utility model relates to a skid-type landing gear drop test device, including a landing gear body 1, a locking assembly 2, a hoisting mechanism 3, a mounting plate 4, and a connecting assembly 5. The hoisting mechanism 3 includes a hoisting plate 301 located on the upper side of the mounting plate 4, pressure plates 302 fixed to the lower sides of both ends of the hoisting plate 301, and inclined pressure ends 303 opened at the bottom of the pressure plates 302. The connecting assembly 5 includes a hydraulic mechanism 506 fixed to the lower side of the hoisting plate 301, a box body 505 fixed to the lower end of the hydraulic mechanism 506, and a boom 502 rotatably mounted on the front side of the box body 505 via a hinge. The boom 502 has an L-shaped bending design and is locked in a side latch 207. Springs 503 are symmetrically distributed on the inner side of the box body 505, and a pressure-bearing surface 501 is fixed to the bent part of the boom 502. The lower end of the inclined pressure end 303 is connected to the inclined part of the pressure surface 501. The outer end of the spring 503 is fixedly connected to the end face of the pressure surface 501. The lower end of the box 505 is fixed with a punch head 504, and the punch head 504 is attached to the upper surface of the mounting plate 4. The distance between the top of the lifting component 206 and the mounting plate 4 is five centimeters. The snap-fit ​​component 2 adopts a double connection design. The hook end 204 cooperates with the outer arc component 201 to clamp and fix the middle part of the arch bridge component 102. The locking and positioning maintains the connection stability. The upper end of the lifting component 206 is connected to the boom 502 through the side slot 207. The boom 502 limits the lifting component 206 to keep the landing gear body 1 in a suspended state. The snap-fit ​​component 2 facilitates the convenient disassembly and assembly of the landing gear body 1, reducing the difficulty of replacement operations. At the same time, it ensures effective limiting when locking, reducing the difficulty of operation.

[0016] Working principle: This embodiment provides a skid-type landing gear drop test device. During operation, the hydraulic mechanism 506 drives the box 505 to rise. At this time, the inclined pressure end 303 squeezes the pressure surface 501, causing the extension arm 502 to open outward. The limiting surface of the extension arm 502 is misaligned and separated from the side latch 207. At this time, the mounting plate 4 and the landing gear body 1 lose the limiting gravity and fall. Then, the hydraulic mechanism 506 quickly impacts outward. The hydraulic mechanism 506 drives the stamping head 504 through the box 505 to generate a rapid impact force on the mounting plate 4. The accelerated impact simulates the drop impact force of the UAV. The snap-fit ​​component 2 adopts a double connection design. The hook end 204 cooperates with the outer arc part 201 to clamp and fix the middle part of the arch bridge part 102. The locking and positioning maintains the connection stability. The upper end of the hoisting part 206 is connected to the extension arm 502 through the side latch 207. The extension arm 502 limits the hoisting part 206 to keep the landing gear body 1 in a suspended state.

[0017] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A skid-type landing gear drop test device, comprising a landing gear body (1), a snap-fit ​​assembly (2), a hoisting mechanism (3), a mounting plate (4), and a connecting assembly (5), characterized in that: The upper surface of the mounting plate (4) is provided with a counterweight (401). The landing gear body (1) includes an arch bridge component (102) fixed to the lower side of both ends of the mounting plate (4), a horizontal bar (101) connecting the same end of the two arch bridge components (102), and a three-way sleeve (104) sleeved and fixed to the horizontal bar (101) and the arch bridge component (102). The landing gear body (1) is sled-shaped. The snap-fit ​​assembly (2) includes an outer arc component (201) spliced ​​on the arch bridge component (102) and a hoisting component (206), and a side slot (207) opened on the upper end of the hoisting component (206). The hoisting mechanism (3) includes a hoisting plate (301) located on the upper side of the mounting plate (4), pressure plates (302) fixed on the lower sides of both ends of the hoisting plate (301), and a slanted pressure end (303) opened at the bottom of the pressure plate (302). The connecting assembly (5) includes a hydraulic mechanism (506) fixed on the lower side of the hoisting plate (301), a box body (505) fixed on the lower end of the hydraulic mechanism (506), and a boom (502) mounted on the front side of the box body (505) by hinge rotation. The boom (502) has an L-shaped bending design and the boom (502) is snapped into the side slot (207).

2. The skid-type landing gear drop test device according to claim 1, characterized in that: A connecting block (103) is fixedly fitted in the middle of the arch bridge component (102), and the upper end of the connecting block (103) is fixed to the mounting plate (4) by bolts.

3. The skid-type landing gear drop test device according to claim 2, characterized in that: The bottom of the lifting component (206) is provided with a claw end (204), and a docking interface (208) is provided in the middle of the claw end (204). The end face of the lifting component (206) is provided with a slot (205). The outer arc component (201) is semi-arc-shaped, and the lower end of the outer arc component (201) is provided with an insertion end (203). The upper end of the outer arc component (201) is provided with a insert (202), and the insert (202) is inserted into the slot (205). The barb of the insertion end (203) is hooked into the docking interface (208).

4. The skid-type landing gear drop test device according to claim 3, characterized in that: Springs (503) are symmetrically distributed on the inner side of the box (505). The bent part of the arm (502) is fixed with a pressure surface (501), and the lower end of the inclined end (303) is connected to the inclined part of the pressure surface (501). The outer end of the spring (503) is fixedly connected to the end face of the pressure surface (501).

5. The skid-type landing gear drop test device according to claim 4, characterized in that: The lower end of the box body (505) is fixed with a punch head (504), and the punch head (504) is attached to the upper surface of the mounting plate (4). The distance between the top of the hoisting component (206) and the mounting plate (4) is five centimeters.

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