Landing leg testing device

Abstract

The utility model mainly relates to the technical field of landing leg test, in particular to a landing leg test device, which comprises a test bench, a slide rail is arranged above the test bench, the slide rail is inclined, a slide block is slidably mounted in the slide rail, a mounting rack is fixedly mounted at the bottom of the slide block, the bottom of the mounting rack is a horizontal plane, and a landing leg body is mounted at the bottom of the mounting rack. The sliding rail is obliquely arranged, after the sliding block rapidly slides downwards in the sliding rail, the landing leg body synchronously dives downwards to collide with the table top of the test table, aircraft landing can be actually simulated, and obtained test data are more accurate; the angle adjusting mechanism can change the inclination angle of the sliding rail and is used for simulating the condition when the airplane dives and lands at different angles; different incomplete gears can be switched to be matched with a toothed plate, so that a sliding block is driven to slide on a guide sliding rod by different distances, a spring is pressed to different degrees, and the situation of landing of an airplane at different speeds is simulated.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to landing leg test technical field, concretely relates to a landing leg test device. BACKGROUND

[0002] The landing leg of the airplane, the scientific name is called the landing gear, is the important device of supporting the airplane when the airplane takes off, lands and ground slides, has the advantages such as landing simple, safe and reliable, direction stable, the design of landing leg helps to keep the direction of the airplane stable, prevents the occurrence of dangerous conditions such as upside down, especially when the airplane lands, the landing gear can absorb the huge impact force generated by the airplane to the ground, protects the safety of the airplane and the passenger, so the landing leg of the airplane needs to be tested, to ensure its safety and reliability, to cope with various extreme conditions.

[0003] The application number: CN202021265307.1 discloses a destructive collision test device for airplane landing gear, the upper part of the lifting frame is driven by a pneumatic cylinder or an oil cylinder, or a tension spring is arranged in the sliding groove to exert elastic force on the fixed L-shaped frame, and then the falling impact force of the landing gear is simulated, but the airplane actually lands by diving, not vertically, so there is a difference between the simulation condition and the actual condition, so the test result is not accurate enough. UTILITY MODEL CONTENT

[0004] 1. The technical problem to be solved by the utility model:

[0005] The utility model provides a landing leg test device to solve the technical problems in the above background technology.

[0006] 2. Technical scheme:

[0007] To achieve the above purpose, the utility model provides a technical scheme: a landing leg test device, comprising a test bed, a slide rail is arranged above the test bed, the slide rail is inclined, and a sliding block is slidably installed inside the slide rail, an installation frame is fixedly installed at the bottom of the sliding block, the bottom of the installation frame is a horizontal plane, and a landing leg body is installed.

[0008] Further, an angle adjusting mechanism is connected to the slide rail, the angle adjusting mechanism comprises a first support and a second support fixedly installed at the top of the test bed, the slide rail is rotatably installed on the first support at both sides of the close end, a drive rod is rotatably installed on the second support, one end of the drive rod is connected with a motor, two symmetrical first connecting rods are fixedly installed, the other end of the first connecting rod is hingedly connected with a second connecting rod, and the other end of the second connecting rod is hingedly connected to the side wall of the slide rail.

[0009] Further, the slide rail is provided with a force storage mechanism, the force storage mechanism comprises a guide slide rod and a toothed plate, the guide slide rod is fixedly connected with the upper end of the slide rail, the guide slide rod is provided with a spring and is slidably matched with a through groove formed in the slide block, and the toothed plate is fixedly installed on the top of the slide block and is engaged with an incomplete gear.

[0010] Further, the number of the incomplete gears is multiple and the number of teeth of each of the incomplete gears is different, and the multiple incomplete gears are fixedly installed on the driving movable mounting sleeve.

[0011] Further, the third support is fixedly installed on the slide block, the transmission rod is rotatably installed on the third support, the key groove is formed in the transmission rod and extends along the axial direction of the transmission rod, the guide key is slidably connected with the inner wall of the mounting sleeve, the threaded hole is formed in the side wall of the mounting sleeve, and the positioning bolt is arranged in the threaded hole.

[0012] Further, the fourth support is fixedly installed on the slide block, the worm is rotatably installed on the fourth support, and the handle is arranged at one end of the worm and is engaged with the worm wheel fixedly installed on the transmission rod.

[0013] 3. Beneficial effects:

[0014] Compared with the prior art, the technical scheme has the following beneficial effects: the slide rail is inclined, the slide block is quickly slid downward in the slide rail, the landing leg body is synchronously dived downward and collides with the table top of the test table, the landing of the airplane can be simulated more practically, and the test data obtained is more accurate.

[0015] The angle adjusting mechanism can change the inclination angle of the slide rail and is used for simulating the situation when the airplane lands at different angles.

[0016] Different incomplete gears and toothed plates can be switched to drive the slide block to slide different distances on the guide slide rod, the spring is pressed to different degrees, and the situation when the airplane lands at different speeds is simulated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a whole structure schematic view of the utility model;

[0018] Fig. 2 It is a force storage mechanism structure schematic view of the utility model;

[0019] Fig. 3 It is an installation sleeve, transmission rod and positioning bolt explosion structure schematic view of the utility model.

[0020] REFERENCE SIGNS:

[0021] 1, test bed; 2, slide rail; 3, sliding block; 31, through groove; 4, mounting frame; 5, landing leg body; 6, angle adjusting mechanism; 61, first support; 62, second support; 63, driving rod; 64, motor; 65, first connecting rod; 66, second connecting rod; 7, force storage mechanism; 71, guide sliding rod; 72, toothed plate; 73, spring; 74, incomplete gear; 75, third support; 76, mounting sleeve; 761, threaded hole; 77, transmission rod; 771, key groove; 78, guide sliding key; 79, positioning bolt; 710, fourth support; 711, worm; 712, handle; 713, worm wheel. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "provided with" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. EMBODIMENT

[0026] Referring to the drawings Figs. 1-3 A landing leg test device, comprising a test table 1, a slide rail 2 is arranged above the test table 1, the slide rail 2 is inclined, and a sliding block 3 is slidably arranged in the slide rail 2, a mounting frame 4 is fixedly arranged at the bottom of the sliding block 3, the bottom of the mounting frame 4 is a horizontal surface, and a landing leg body 5 is arranged on the bottom of the mounting frame 4.

[0027] In this embodiment, after the landing leg body 5 is screwed to the bottom of the mounting frame 4, the sliding block 3 is slid to the highest position of the slide rail 2, and then a certain force is applied to the sliding block 3, so that the sliding block 3 quickly slides downward in the slide rail 2, and the landing leg body 5 synchronously dives downward until colliding with the table surface of the test table 1, thereby more realistically simulating the landing of an airplane, and the obtained test data is more accurate.

[0028] An angle adjusting mechanism 6 is connected to the slide rail 2, the angle adjusting mechanism 6 comprises a first support 61 and a second support 62 which are fixedly arranged on the top of the test table 1, the slide rail 2 is rotatably arranged on the first support 61 at both sides of the end portion, a driving rod 63 is rotatably arranged on the second support 62, a motor 64 is connected to one end of the driving rod 63, two symmetrical first connecting rods 65 are fixedly arranged, the other end of the first connecting rod 65 is hingedly connected to a second connecting rod 66, and the other end of the second connecting rod 66 is hingedly connected to the side wall of the slide rail 2.

[0029] In this embodiment, after the motor 64 drives the driving rod 63 to rotate, the first connecting rod 65 synchronously rotates and pulls the second connecting rod 66, so that the slide rail 2 is driven to rotate on the first support 61, thereby changing the inclination angle of the slide rail 2, and simulating the situation when the airplane lands at different angles.

[0030] A force storage mechanism 7 is arranged on the slide rail 2, the force storage mechanism 7 comprises a guide sliding rod 71 and a toothed plate 72, the guide sliding rod 71 is fixedly connected to the upper end portion of the slide rail 2, a spring 73 is arranged on the guide sliding rod 71 and slidably matches a through groove 31 arranged on the sliding block 3, and the toothed plate 72 is fixedly arranged on the top of the sliding block 3 and matches an incomplete gear 74.

[0031] In this embodiment, the sliding block 3 is pushed to slide in the slide rail 2, the toothed plate 72 synchronously moves until the toothed plate 72 and the incomplete gear 74 are engaged, at this time, the incomplete gear 74 is driven to rotate, so that the sliding block 3 is driven to slide in the slide rail 2 and press the spring 73 on the guide sliding rod 71, when the incomplete gear 74 rotates to the position where the gear teeth and the toothed plate 72 are disengaged, the elastic force of the spring 73 pushes the sliding block 3, so that the sliding block 3 quickly slides downward in the slide rail 2.

[0032] The plurality of incomplete gears 74 are fixedly installed on the driven movable mounting sleeve 76.

[0033] The third support 75 is fixedly installed on the sliding block 3, and the transmission rod 77 is rotatably installed on the third support 75.

[0034] In the embodiment, the mounting sleeve 76 is slidably connected with the transmission rod 77 through the sliding connection of the guide sliding key 78 and the key groove 771, and is locked by the positioning bolt 79 in the threaded hole 761, so that different incomplete gears 74 and toothed plates 72 can be switched to drive the sliding block 3 to slide on the guide sliding rod 71 by different distances, and the spring 73 is pressed to different degrees, which is used for simulating the situation of the airplane landing at different speeds.

[0035] The fourth support 710 is fixedly installed on the sliding block 3, and the worm 711 is rotatably installed on the fourth support 710.

[0036] In the embodiment, the transmission rod 77 can be driven to rotate more easily through the meshing transmission of the worm 711 and the worm gear 713.

[0037] The above-mentioned embodiments only express certain embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application; it should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application; therefore, the protection scope of the present application should be subject to the appended claims.

[0038] It should be noted that the above content belongs to the technical cognition of the inventor, and due to the vast and complex technical content in the field, the above content of the present application does not necessarily constitute the prior art.

Claims

1. A landing leg test apparatus, characterized by: Including test bench (1), the upper portion of test bench (1) is provided with slide rail (2), the slide rail (2) is inclined, and the inside slide rail (2) is slidably installed with sliding block (3), the bottom of sliding block (3) is fixedly installed with mounting bracket (4), the bottom of mounting bracket (4) is horizontal plane, and landing leg body (5) is installed.

2. A landing leg test apparatus according to claim 1, wherein: The angle adjusting mechanism (6) is connected to the slide rail (2), the angle adjusting mechanism (6) includes a first support (61) and a second support (62) fixedly installed on the top of the test bench (1), the slide rail (2) is rotatably installed on the first support (61) on both sides of the proximal end, the second support (62) is rotatably installed with a drive rod (63), one end of the drive rod (63) is connected with a motor (64), and two symmetrical first connecting rods (65) are fixedly installed, the other end of the first connecting rod (65) is hingedly connected with a second connecting rod (66), and the other end of the second connecting rod (66) is hingedly connected to the side wall of the slide rail (2).

3. A landing leg test apparatus according to claim 1, wherein: The slide rail (2) is provided with a force storage mechanism (7), the force storage mechanism (7) includes a guide slide rod (71) and a tooth plate (72) with the same extension direction as the slide rail (2), one end of the guide slide rod (71) is fixedly connected with the upper end of the slide rail (2), the guide slide rod (71) is provided with a spring (73) and is slidably matched with a through slot (31) formed in the sliding block (3), and the tooth plate (72) is fixedly installed on the top of the sliding block (3) and is engaged with an incomplete gear (74).

4. A landing leg test apparatus according to claim 3, wherein: The number of incomplete gears (74) is multiple and the number of teeth is different, and the multiple incomplete gears (74) are fixedly installed on the driven movable mounting sleeve (76).

5. A landing leg test apparatus according to claim 4, wherein: The third support (75) is fixedly installed on the sliding block (3), the transmission rod (77) is rotatably installed on the third support (75), the key groove (771) extending along the axis direction is formed in the transmission rod (77), the guide sliding key (78) is slidably connected with the inner wall of the mounting sleeve (76), the threaded hole (761) is formed in the side wall of the mounting sleeve (76), and the positioning bolt (79) is arranged in the threaded hole (761).

6. A landing leg test apparatus according to claim 5, wherein: The fourth support (710) is fixedly installed on the sliding block (3), the worm (711) is rotatably installed on the fourth support (710), the handle (712) is arranged at one end of the worm (711), and the worm (711) is engaged with the worm gear (713) fixedly installed on the transmission rod (77).

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