Undercarriage loading device based on moment balance

Abstract

The invention relates to the technical field of aircraft undercarriage manufacturing, and particularly discloses an undercarriage loading device based on moment balance, which comprises an undercarriage and a loading seat, the undercarriage is mounted on the loading seat, a first sliding seat is arranged on the lower side of the loading seat, the loading seat slides on the first sliding seat, a cross beam is fixedly mounted on the upper side of the front end of the first sliding seat, and a second sliding seat is arranged on the cross beam. The loading mechanism is arranged on the upper side of the undercarriage, the weight filling mechanism is arranged on the upper side of the loading mechanism, the feeding mechanism is arranged on one side of the weight filling mechanism, and the detection mechanisms are arranged at the two ends of the loading seat correspondingly. Compared with a traditional undercarriage loading device, the undercarriage loading device has the remarkable advantages that the testing precision can be improved, testing errors are reduced through real-time data feedback, the flexibility and adaptability of the device enable the device to meet diversified testing requirements, the problem finding and adjusting capacity in the testing process is enhanced through the real-time performance of data, and the testing efficiency is improved. The use difficulty is reduced through simple and convenient operation, and the training time is saved.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft landing gear manufacturing, and in particular to a landing gear loading device based on moment balance. Background Art

[0002] Aircraft landing gear is an important part of the aircraft, mainly used to provide support on the ground and in the air. Its main functions include supporting the weight of the aircraft, assisting takeoff and landing, and ensuring stability when taxiing on the ground. The landing gear usually includes the main landing gear, the front landing gear and the shock absorption system. The main landing gear is located on both sides of the aircraft, and the front landing gear is located at the front end of the aircraft. The shock absorption system is designed to absorb the impact force generated during landing, reduce the impact on the fuselage and passengers, and ensure the stability of the flight.

[0003] The landing gear loading device is a mechanism used to test and simulate the performance of aircraft landing gear under various working conditions. Compared with the landing gear shock absorption system which focuses on impact absorption and shock absorption, the landing gear loading device focuses more on support and load-bearing. The loading device ensures that the test landing gear can withstand and distribute the aircraft weight and related dynamic loads during takeoff, landing and ground operations. This device is crucial for testing the overall performance, safety and operational stability of the aircraft landing gear.

[0004] However, the existing landing gear loading device lacks an accurate moment balance mechanism, which may lead to uneven load distribution during the test process, affecting the accuracy of the test. Traditional devices often use independent data acquisition devices, lack the ability of real-time feedback and automatic data analysis, and often require additional equipment adjustment or reconfiguration when testing different types of landing gears. Therefore, the present invention proposes a landing gear loading device based on moment balance to solve the problems mentioned in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a landing gear loading device based on moment balance.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A landing gear loading device based on moment balance comprises a landing gear and a loading seat, wherein the landing gear is mounted on the loading seat, a slide seat 1 is arranged at the lower side of the loading seat, the loading seat slides on the slide seat 1, a crossbeam is fixedly mounted at the upper side of the front end of the slide seat 1, a loading mechanism is arranged at the upper side of the landing gear, a weight filling mechanism is arranged at the upper side of the loading mechanism, a feeding mechanism is arranged at one side of the weight filling mechanism, and detection mechanisms are arranged at both ends of the loading seat;

[0008] A vertical seat is fixedly mounted at the rear end of the loading seat, the loading mechanism comprises a loading seat, a balancing bracket is fixed on the upper side of the loading seat, and the rear end of the balancing bracket slides up and down on the vertical seat;

[0009] The weight filling mechanism includes a slide seat four, the slide seat four slides on the upper side of the balance bracket, and a card frame is fixed on the upper side of the slide seat four, and a plurality of weight blocks are placed in the card slot of the card frame;

[0010] The front end of the slide seat 1 is equipped with a winding wheel 2 and a winding wheel 3, the winding wheel 3 is wound with a pull rope 2, the end of the pull rope 2 is connected to the slide seat 4, and the side of the winding wheel 2 is wound with a pull rope 1.

[0011] Preferably, the detection mechanism comprises a vertical frame, the vertical frame slides on the loading seat, a detection frame sliding up and down is arranged on the vertical frame, a detection frame is mounted on the detection frame, and the detection frame is docked with the landing gear support mechanism.

[0012] Preferably, screw heads are fixed at both ends of the detection frame, sliding grooves corresponding to the screw heads are opened on the left and right sides of the vertical frame, and threaded positioning nuts are arranged on the screw heads, and the positioning nuts are tightly attached to the surface of the vertical frame.

[0013] Preferably, a contact seat is provided on the lower side of the loading seat, the contact seat contacts the force point of the main frame of the landing gear below, a stud is rotatably connected to the upper side of the contact seat, and a handle is fixed to the lower end of the stud, and a threaded sleeve corresponding to the stud is fixed to the lower side of the loading seat.

[0014] Preferably, a driving motor is connected to one side of the winding wheel three, and a multi-gear set is provided on the other side of the winding wheel three, a corresponding meshing spur gear is provided on one side of the multi-gear set, and the spur gear is fixedly connected to the winding wheel two.

[0015] Preferably, the outer side of the spur gear is rotatably connected with a slide seat 2, which slides on the slide seat 1. A latch block that slides up and down is arranged on the outer side of the slide seat 2, and a plurality of positioning grooves corresponding to the latch block are opened on the outer side of the slide seat 1.

[0016] Preferably, the feeding mechanism comprises a feeding track and a feeding seat, a winch is fixedly mounted on the upper end of the feeding track, and the feeding seat slides up and down on the feeding track.

[0017] Preferably, a slide seat three sliding forward and backward is provided on the loading seat, a support seat corresponding to the card frame is fixed at the front end of the slide seat three, a push cylinder is fixedly installed on the loading seat, and the output end of the push cylinder is fixedly connected to the front support seat.

[0018] Preferably, a winding wheel is connected to the upper side of the front end of the loading seat, and one end of the pull rope is connected to the winding wheel. Two guide wheels connected to the loading seat are arranged on the front side of the winding wheel, and a check block connected to the loading seat is arranged between the upper and lower guide wheels.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The landing gear loading device based on moment balance of the present invention is intended to conduct a comprehensive performance test on the aircraft landing gear. The device simulates the load-bearing state of the landing gear under different working conditions by installing the landing gear on the loading seat and sliding the sliding seat. In addition, the device is equipped with a real-time data detection function, which can record the applied load and the reaction force of the landing gear for subsequent analysis, thereby improving the accuracy and reliability of the test;

[0021] 2. The loading mechanism of the present invention ensures that the load of each part of the landing gear is balanced and the test accuracy is improved. The detection mechanism can fine-tune the support point according to the load condition to ensure the best torque balance. The combination of the weight filling mechanism and the feeding mechanism can quickly increase or decrease the weight block to simulate different gravity conditions. The feeding mechanism controls the up and down movement of the weight through the winch to achieve precise adjustment. The device collects data through real-time load and reaction force.

[0022] 3. Compared with the traditional landing gear loading device, the present invention has significant advantages. First, it can improve the test accuracy and reduce the test error through real-time data feedback. Secondly, the flexibility and adaptability of the device enable it to meet diverse test needs. The real-time data enhances the problem discovery and adjustment capabilities during the test process, while the simple operation reduces the difficulty of use and saves training time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a landing gear loading device based on moment balance proposed by the present invention Figure 1 ;

[0024] Figure 2 A schematic diagram of the structure of a landing gear loading device based on moment balance proposed by the present invention Figure 2 ;

[0025] Figure 3 A schematic diagram of a loading structure of a landing gear in a landing gear loading device based on moment balance proposed by the present invention;

[0026] Figure 4 The invention provides a landing gear loading device based on moment balance. Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 5The invention provides a landing gear loading device based on moment balance. Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 6 This is a schematic structural diagram of a detection mechanism in a landing gear loading device based on moment balance proposed by the present invention;

[0029] Figure 7 It is a structural schematic diagram of a weight filling mechanism and a feeding mechanism in a landing gear loading device based on moment balance proposed by the present invention;

[0030] Figure 8 The present invention is a schematic structural diagram of a loading mechanism in a landing gear loading device based on moment balance.

[0031] In the figure: 1, landing gear; 2, loading seat; 3, slide seat 1; 4, crossbeam;

[0032] 5. Loading mechanism; 501. Loading seat; 502. Balance bracket; 503. Contact seat; 504. Stud;

[0033] 6. Feeding mechanism; 601. Feeding track; 602. Hoist; 603. Feeding seat; 604. Sliding seat three; 605. Pushing cylinder; 606. Support seat;

[0034] 7. Weight filling mechanism; 701. Sliding seat 4; 702. Card frame; 703. Weight block;

[0035] 8. Detection mechanism; 801. vertical frame; 802. detection frame; 803. detection frame; 804. screw head; 805. positioning nut;

[0036] 9. Vertical seat; 10. Pull rope 1; 11. Check block; 12. Guide wheel; 13. Winding wheel 1; 14. Multi-gear set; 15. Spur gear; 16. Slide seat 2; 17. Latch block; 18. Positioning slot; 19. Pull rope 2; 20. Winding wheel 2; 21. Winding wheel 3. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figure 1-8, a landing gear loading device based on moment balance, comprising a landing gear 1 and a loading seat 2, the landing gear 1 is installed on the loading seat 2, a slide 3 is arranged at the lower side of the loading seat 2, the loading seat 2 slides on the slide 3, a crossbeam 4 is fixedly installed on the upper side of the front end of the slide 3, a loading mechanism 5 is arranged on the upper side of the landing gear 1, a weight filling mechanism 7 is arranged on the upper side of the loading mechanism 5, a feeding mechanism 6 is arranged on one side of the weight filling mechanism 7, and a detection mechanism 8 is arranged at both ends of the loading seat 2, through the detection mechanism 8, the load sensor thereon measures the applied load and the reaction force of the landing gear 1, provides real-time feedback, and records the test data in real time for subsequent analysis, the feeding mechanism 6 increases or decreases the weight block 703 on one side of the weight filling mechanism 7 to simulate the bearing capacity reaction state of the landing gear 1 under different gravitational accelerations, the loading mechanism 5 ensures that the loads of various parts of the lower landing gear 1 are balanced, and the loading seat 2 slides on the slide 3 to simulate the moving load-bearing process of the landing gear 1;

[0039] Furthermore, referring to Figure 8 A contact seat 503 is provided at the lower side of the loading seat 501, and the contact seat 503 contacts the force point of the main frame of the lower landing gear 1. A stud 504 is rotatably connected to the upper side of the contact seat 503, and a handle is fixed at the lower end of the stud 504, and a threaded sleeve corresponding to the stud 504 is fixed at the lower side of the loading seat 501. After the assembly of the landing gear 1 on the loading seat 2 is completed, the contact connection between the upper loading mechanism 5 and the lower landing gear 1 is established, so that the contact seat 503 at the lower end of the loading mechanism 5 corresponds to the force point at the upper end of the landing gear 1. The stud 504 on it is rotated by the handle, and the stud 504 drives the contact seat 503 connected at the lower side to move downward until the contact seat 503 completely contacts the lower landing gear 1.

[0040] Furthermore, referring to Figure 7The weight-filling mechanism 7 includes a slide seat 701, which slides on the upper side of the balancing bracket 502, and a card frame 702 is fixed on the upper side of the slide seat 701, and a plurality of weight blocks 703 are placed in the card slot of the card frame 702. A vertical seat 9 is fixedly installed at the rear end of the loading seat 2. The loading mechanism 5 includes a loading seat 501, and a balancing bracket 502 is fixed on the upper side of the loading seat 501. The rear end of the balancing bracket 502 slides up and down on the vertical seat 9. The feeding mechanism 6 includes a feeding rail 601 and a feeding seat 603. A winch 602 is fixed on the upper end of the feeding rail 601. The feeding seat 603 slides up and down on the feeding rail 601. The seat 603 is provided with a slide seat 3 604 that slides forward and backward, and a bracket 606 corresponding to the card frame 702 is fixed at the front end of the slide seat 3 604. A push cylinder 605 is fixedly installed on the loading seat 603, and the output end of the push cylinder 605 is fixedly connected to the front side bracket 606. The loading seat 603 connected by the hoist 602 on the loading mechanism 6 is controlled to move up or down, and the bracket 606 carries the increase or decrease of the weight block 703. After the loading seat 603 connected by the hoist 602 reaches the specified height, the weight block 703 is taken and placed by the bracket 606, so that it enters or moves out of the card frame 702 of the slide seat 4 701;

[0041] Furthermore, referring to Figure 1 , 2 , a reel 20 and a reel 3 21 are installed at the front end of the slide 1 3, a pull rope 2 19 is wound around the reel 3 21, and the end of the pull rope 2 19 is connected to the slide 4 701, and two guide wheels corresponding to the pull rope 2 19 are installed on the cross beam 4, and an electric limiting pin corresponding to the loading seat 501 is installed on the vertical seat 9, which controls the electric limiting pin to limit the downward movement of the loading seat 501, and the loading mechanism 5 and the weight-filling mechanism 7 thereon fall, and the loading seat 2 completely bears the entire weight of the weight-filling mechanism 7 on the upper balance bracket 502 and several weight blocks 703 therein, so as to simulate the load-bearing process of the landing gear 1, and during the falling process of the weight-filling mechanism 7, the other end of the pull rope 2 19 is pulled toward the upper side of the cross beam 4 through the connected pull rope 2 19 to be reeled up, thereby causing the reel 3 21 at the front end of the slide 1 3 to rotate;

[0042] Furthermore, referring to Figure 2 , 45. A multi-gear set 14 is fixed to the other side of the winding wheel 3 21. A torque shaft is fixed inside the multi-gear set 14. A torque groove corresponding to the torque shaft is opened in the winding wheel 3 21. The multi-gear set 14 slides on one side of the winding wheel 3 21 through the torque shaft and the torque groove. A corresponding meshing spur gear 15 is arranged on one side of the multi-gear set 14. The spur gear 15 is fixedly connected to the winding wheel 20. A pull rope 10 is wound around the winding wheel 20. A winding wheel 13 is connected to the upper side of the front end of the loading seat 2. The end of the rope 10 is connected to the winding wheel 13, and the front side of the winding wheel 13 is provided with two guide wheels 12 connected to the loading seat 2. Therefore, during the rotation of the winding wheel 3 21, the multi-gear set 14 links the spur gear 15 on one side, so that the winding wheel 2 20 connected to the spur gear 15 rotates, and the winding wheel 2 20 winds the peripheral pull rope 10, and pulls the loading seat 2 connected to the end, and the landing gear 1 structure on it simulates the translation state of the landing gear 1 during the pressure-bearing process;

[0043] Furthermore, referring to Figure 5 By adjusting the position of the multi-gear set 14 to the left and right, the spur gear 15 can be meshed with gears of different wheel diameters. Correspondingly, the position of the spur gear 15 should also be adjusted accordingly. The outer side of the spur gear 15 is rotatably connected to a slide seat 2 16, and the slide seat 2 16 slides on the slide seat 1 3. The outer side of the slide seat 2 16 is provided with a latch block 17 that slides up and down, and the outer side of the slide seat 1 3 is provided with a plurality of positioning grooves 18 corresponding to the latch block 17. The wheel diameter changes of the multiple gears in the multi-gear set 14 are uniformly increased, and there is a uniform The tolerance of the change is that the spacing between the two adjacent positioning grooves 18 is consistent with the wheel diameter tolerance. Therefore, after adjusting the longitudinal position of the multi-gear set 14, the position of the latch block 17 is determined and adjusted so that the spur gear 15 is meshed with the corresponding gear in the multi-gear set 14, and then the latch block 17 is inserted into the positioning groove 18 at the corresponding position. By adjusting the size of the meshing spur gear 15, the number of winding turns per unit time of the winding wheel 3 21 can be adjusted, thereby realizing the change of the stroke of pulling the loading seat 2, simulating different load-bearing processes of the landing gear 1;

[0044] Furthermore, referring to Figure 4 A check block 11 connected to the loading seat 2 is provided between the upper and lower guide wheels 12, and a torsion spring is provided at the connection of the winding wheel 13. The purpose of providing the check block 11 is that after the position of the slide seat 16 is adjusted, the winding wheel 13 can quickly adjust the loosened part of the draw rope 10, and the check block 11 can play a check role for the tightened draw rope 10, so as to keep the draw rope 10 between the loading seat 2 and the winding wheel 20 always taut, and avoid the draw rope 10 from loosening when the winding wheel 20 pulls the loading seat 2 through the draw rope 10;

[0045] Furthermore, referring to Figure 6The detection mechanism 8 includes a vertical frame 801, which slides on the loading seat 501. The vertical frame 801 is provided with a detection frame 802 that slides up and down. The detection frame 802 is installed with a detection frame 803. The detection frame 803 is docked with the support mechanism of the landing gear 1. Both ends of the detection frame 802 are fixed with screw heads 804. The vertical frame 801 is provided with sliding grooves corresponding to the screw heads 804 on the left and right, and the screw heads 804 are provided with threaded positioning nuts 805. The positioning nuts 805 are close to the surface of the vertical frame 801. After the above-mentioned electric limit pin is pulled out, Before the landing gear 1 is loaded, the detection mechanism 8 needs to be installed, the upper and lower positions of the detection frame 802 on the vertical frame 801 are adjusted in advance, and the position of the detection frame 802 after adjustment is fixed by the screw head 804 and the corresponding positioning nut 805, and the detection frame 803 is matched with the support mechanism of the landing gear 1. During the process of the landing gear 1 being loaded, the detection frame 803 on the detection frame 802 is squeezed and moved, and the load data is detected by the detection unit on the detection frame 803. The support point of the landing gear 1 is fine-tuned according to the load condition to achieve the best moment balance;

[0046] Furthermore, a driving motor is connected to one side of the winding wheel three 21. After a group of items are tested, the weight block 703 can be increased or decreased, the variables can be adjusted, and multiple groups of data can be tested in order to improve the verified torque flatness support point. The driving motor can control the connected winding wheel three 21 to rotate, and the connected weight filling mechanism 7 can be pulled up through the pull rope two 19 to achieve the reset of the weight filling mechanism 7 after the test is completed.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A landing gear loading device based on moment balance, comprising a landing gear (1) and a loading seat (2), It is characterized in that The landing gear (1) is mounted on a loading seat (2), a slide seat (3) is arranged at the lower side of the loading seat (2), the loading seat (2) slides on the slide seat (3), a crossbeam (4) is fixedly mounted on the upper side of the front end of the slide seat (3), a loading mechanism (5) is arranged on the upper side of the loading mechanism (5), a weight filling mechanism (7) is arranged on the upper side of the loading mechanism (5), a feeding mechanism (6) is arranged on one side of the weight filling mechanism (7), and detection mechanisms (8) are arranged at both ends of the loading seat (2); A vertical seat (9) is fixedly mounted on the rear end of the loading seat (2); the loading mechanism (5) comprises a loading seat (501); a balancing bracket (502) is fixed on the upper side of the loading seat (501); and a rear end of the balancing bracket (502) slides up and down on the vertical seat (9); The weight filling mechanism (7) comprises a slide seat four (701), the slide seat four (701) slides on the upper side of the balance bracket (502), and a card frame (702) is fixed on the upper side of the slide seat four (701), and a plurality of weight blocks (703) are placed in the card slot of the card frame (702); The front end of the slide seat one (3) is equipped with a winding wheel two (20) and a winding wheel three (21), and the winding wheel three (21) is wound with a pull rope two (19), and the end of the pull rope two (19) is connected to the slide seat four (701), and the winding wheel two (20) is wound with a pull rope one (10) around its side.

2. The landing gear loading device based on moment balance according to claim 1, It is characterized in that The detection mechanism (8) comprises a vertical frame (801), the vertical frame (801) slides on the loading seat (501), a detection frame (802) that slides up and down is arranged on the vertical frame (801), a detection frame (803) is installed on the detection frame (802), and the detection frame (803) is docked with the landing gear (1) support mechanism.

3. The landing gear loading device based on moment balance according to claim 2, It is characterized in that Screw heads (804) are fixed at both ends of the detection frame (802), and sliding grooves corresponding to the screw heads (804) are opened on the left and right sides of the vertical frame (801), and threaded positioning nuts (805) are arranged on the screw heads (804), and the positioning nuts (805) are closely attached to the surface of the vertical frame (801).

4. The landing gear loading device based on moment balance according to claim 1, It is characterized in that A contact seat (503) is arranged at the lower side of the loading seat (501), and the contact seat (503) contacts the force point of the main frame of the landing gear (1) below. A stud (504) is rotatably connected to the upper side of the contact seat (503), and a handle is fixed to the lower end of the stud (504), and a threaded sleeve corresponding to the stud (504) is fixed to the lower side of the loading seat (501).

5. The landing gear loading device based on moment balance according to claim 1, It is characterized in that One side of the winding wheel three (21) is connected to a driving motor, and the other side of the winding wheel three (21) is fixed with a multi-gear set (14), a torque shaft is fixed inside the multi-gear set (14), a torque groove corresponding to the torque shaft is opened inside the winding wheel three (21), the multi-gear set (14) slides on one side of the winding wheel three (21) through the torque shaft and the torque groove, and a corresponding meshing spur gear (15) is arranged on one side of the multi-gear set (14), and the spur gear (15) is fixedly connected to the winding wheel two (20).

6. The landing gear loading device based on moment balance according to claim 5, It is characterized in that The outer side of the spur gear (15) is rotatably connected to a second slide seat (16), the second slide seat (16) slides on the first slide seat (3), the outer side of the second slide seat (16) is provided with a latch block (17) that slides up and down, and the outer side of the first slide seat (3) is provided with a plurality of positioning grooves (18) corresponding to the latch block (17).

7. The landing gear loading device based on moment balance according to claim 1, It is characterized in that The feeding mechanism (6) comprises a feeding track (601) and a feeding seat (603). A winch (602) is fixedly mounted on the upper end of the feeding track (601), and the feeding seat (603) slides up and down on the feeding track (601).

8. The landing gear loading device based on moment balance according to claim 7, It is characterized in that The loading seat (603) is provided with a slide seat three (604) that slides forward and backward, and a support seat (606) corresponding to the card frame (702) is fixed to the front end of the slide seat three (604). A push cylinder (605) is fixedly installed on the loading seat (603), and the output end of the push cylinder (605) is fixedly connected to the front support seat (606).

9. The landing gear loading device based on moment balance according to claim 1, It is characterized in that A winding wheel (13) is connected to the upper side of the front end of the loading seat (2), the end of the pull rope (10) is connected to the winding wheel (13), the front side of the winding wheel (13) is provided with two guide wheels (12) connected to the loading seat (2), and a check block (11) connected to the loading seat (2) is provided between the upper and lower guide wheels (12).

Images