Aviation cushion original part and replacement part performance comparison dynamic test device

Abstract

The utility model discloses a performance comparison dynamic test device for an original part and a replacement part of an aviation cushion, which comprises an impact mechanism, a seat, two dummies and two load sensors, and is characterized in that the impact mechanism can reciprocate in a horizontal plane to provide a preset impact load in the horizontal direction; the seat is detachably and fixedly arranged on the impact mechanism and is provided with three seats which are arranged side by side, and the bottom surfaces of the seats on the two sides are used for detachably installing a cushion original part and a cushion replacement part respectively; the two dummies are respectively placed on the two cushion original parts and the cushion replacement part, and are detachably and fixedly connected with the seat; and the two load sensors are respectively arranged in the two dummies and are used for monitoring the lumbar vertebra load of the dummies. The dynamic test device has the beneficial effects that the dynamic test device can be used for simultaneously carrying out dynamic test on a cushion original part and a cushion replacement part, the same test conditions of the original part and the replacement part can be ensured, and the test data is more real and visual.

Description

TECHNICAL FIELD

[0001] The utility model relates to aircraft parts dynamic test technical field especially relates to a kind of aviation seat cushion original piece and replacement piece performance comparison dynamic test device. BACKGROUND

[0002] The seat cushion of civil aviation dynamic seat system is the key component for protecting the lumbar vertebrae of passengers under vertical impact condition. After long-term and frequent use, the mechanical properties of the seat cushion will degrade, and the ability of the seat cushion after performance degradation to protect the lumbar vertebrae of passengers under impact environment will decrease significantly. Generally, the service life of the seat cushion is about 3-5 years, and it is required to be replaced after the expiration of the service life. Before use, the seat cushion replacement piece needs to be subjected to dynamic impact test to verify the dynamic performance of the seat cushion replacement piece and ensure that the dynamic performance of the replacement piece is the same as that of the original piece.

[0003] The existing seat cushion dynamic test device (such as the aviation replaceable seat cushion dynamic airworthiness test device and test method disclosed in application No. 201510931908.9) cannot simultaneously perform dynamic test on the seat cushion original piece and the replacement piece, cannot ensure that the test conditions of the original piece and the replacement piece are the same, and is prone to cause unauthentic test data and non-intuitive test results. UTILITY MODEL CONTENTS

[0004] The utility model aims to overcome the above technical deficiencies and proposes an aviation seat cushion original piece and replacement piece performance comparison dynamic test device to solve the technical problems in the prior art that the seat cushion original piece and the replacement piece cannot be simultaneously subjected to dynamic test, the test conditions of the original piece and the replacement piece cannot be ensured to be the same, and unauthentic test data and non-intuitive test results are easily caused.

[0005] To achieve the above technical purposes, the technical scheme of the utility model provides an aviation seat cushion original piece and replacement piece performance comparison dynamic test device, which comprises:

[0006] An impact mechanism, which can reciprocate in a horizontal plane to provide a preset impact load in the horizontal direction;

[0007] A seat, which is detachably and fixedly arranged on the impact mechanism and has three seats arranged side by side, and the bottom surfaces of the seats on both sides are respectively used to detachably install a seat cushion original piece and a seat cushion replacement piece;

[0008] Two dummies, which are respectively placed on the seat cushion original piece and the seat cushion replacement piece and are both detachably and fixedly connected with the seat;

[0009] Two load sensors, which are respectively arranged in the two dummies to monitor the lumbar vertebrae load of the dummies.

[0010] Further, the impact mechanism comprises a plurality of slide rails, a test platform and a driving assembly, each of the slide rails is arranged in parallel with each other and is detachably and fixedly arranged on the ground in a horizontal manner, the test platform is arranged in a horizontal manner and is slidably arranged on each of the slide rails, the seat is detachably and fixedly arranged on the test platform, and the driving assembly is connected with the test platform and used for driving the test platform to move along the length direction of each of the slide rails, so as to provide a preset impact load in a horizontal direction.

[0011] Further, the bottom surface of each of the seats forms an included angle a with the test platform, and the included angle a is between 80° and 90°.

[0012] Further, the adjacent seats share a handrail.

[0013] Further, the seat is a civil aviation aircraft seat, and the model of the seat is KKY421.

[0014] Further, the seat is arranged in a vertical direction of the movement direction of the test platform.

[0015] Further, the seat cushion original part and the seat cushion replacement part are fixedly arranged on the chair basin of the seat and are detachably and fixedly arranged on the bottom surface of the seat via the chair basin.

[0016] Further, the dummy is fixedly arranged on the seat via a safety belt.

[0017] Further, the impact mechanism further comprises a light measurement assembly arranged on the side of the test platform and used for monitoring the movement posture and deformation of the seat.

[0018] Further, the light measurement assembly comprises at least two cameras, and each of the cameras is arranged on the two sides of the seat and used for photographing the seat.

[0019] Compared with the prior art, the beneficial effects of the utility model include that when the power impact test is performed on the seat cushion replacement part, the seat cushion original part and the seat cushion replacement part are detachably and installed on the bottom surfaces of the two seats respectively, two dummies are placed on the seat cushion original part and the seat cushion replacement part respectively, and the two dummies are detachably and fixedly connected with the seat, the impact mechanism is controlled to move reciprocally in a horizontal plane, so that the preset impact load in a horizontal direction can be provided for the seat, the lumbar load of the two dummies can be monitored by the two load sensors respectively, and the dynamic performance of the seat cushion original part and the seat cushion replacement part can be judged according to the monitored lumbar load, the test device can simultaneously perform the power test on the seat cushion original part and the seat cushion replacement part, and the test conditions of the original part and the replacement part can be ensured to be the same, and the test data is more real and intuitive. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a three-dimensional structure schematic view of the seat in the aviation seat cushion original part and replacement part performance comparison dynamic test device provided by the utility model,

[0021] Figure 2 is Figure 1 a three-dimensional structure schematic view when the seat cushion original part and the seat cushion replacement part in the utility model are separated from the seat,

[0022] Figure 3 is a structure schematic view of the aviation seat cushion original part and replacement part performance comparison dynamic test device provided by the utility model,

[0023] In the figure: 1 - seat cushion original part, 2 - seat cushion replacement part, 100 - seat, 110 - seat, 200 - dummy. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0025] The utility model provides a kind of aviation seat cushion original part and replacement part performance comparison dynamic test device, its structure as Figure 1 - Figure 3 As shown in the figure, including impact mechanism, seat 100, two dummies 200 and two load sensors, the impact mechanism can reciprocate in horizontal plane, to provide the preset impact load in horizontal direction;The seat 100 can be detachably fixed on the impact mechanism, and has three side-by-side arranged seats 110, the bottom surface of the seat 110 on both sides is respectively used to detachably install seat cushion original part 1 and seat cushion replacement part 2;Two dummies 200 are placed on two seat cushion original parts 1 and seat cushion replacement parts 2 respectively, and are all detachably fixed with the seat 100;Two load sensors are arranged in two dummies 200 respectively, to monitor the lumbar load of the dummy 200.

[0026] In the power impact test of the cushion replacement 2, the cushion original 1 and the cushion replacement 2 are respectively detachably installed on the bottom surface of the seat 110, two dummies 200 are respectively placed on the cushion original 1 and the cushion replacement 2, and the two dummies 200 are detachably connected with the seat 100. By controlling the impact mechanism, the impact mechanism reciprocates in the horizontal plane, so as to provide a preset impact load in the horizontal direction to the seat 100. The lumbar load of the two dummies 200 can be monitored by the two load sensors, and the dynamic performance of the cushion original 1 and the cushion replacement 2 can be judged according to the monitored lumbar load. The test device can simultaneously test the cushion original 1 and the cushion replacement 2, and can ensure that the test conditions of the original and the replacement are the same, and the test data is more real and intuitive.

[0027] As a preferred embodiment, the impact mechanism includes a plurality of slide rails, a test platform and a driving assembly. Each of the slide rails is arranged parallel to each other and is detachably and fixedly arranged horizontally on the ground. The test platform is arranged horizontally and is slidably arranged on each of the slide rails. The seat 100 is detachably and fixedly arranged on the test platform. The driving assembly is connected with the test platform and is used to drive the test platform to move along the length direction of each of the slide rails to provide a preset impact load in the horizontal direction. During the high-speed movement of the test platform along the length direction of each of the slide rails, the seat 100 can be provided with an impact load in the movement direction of the test platform.

[0028] As a preferred embodiment, the bottom surface of each of the seats 110 has an included angle a with the test platform, and the included angle a is between 80° and 90°. During the reciprocating movement of the test platform in the horizontal plane, the seat 100 can be provided with an impact load in the horizontal direction. The included angle between the seat surface of the seat 110 and the horizontally arranged test platform is between 80° and 90°, which can simulate the dynamic performance of the cushion original 1 and the cushion replacement 2 under the condition of vertical impact.

[0029] As a preferred embodiment, please refer to Figure 1, adjacent seats share armrests, so that the seat 100 forms a triple seat structure, two dummies 200 are placed on the left and right sides respectively, and do not interfere with each other during the dynamic impact test, which can avoid the influence between the two dummies 200 during the test, ensure the authenticity of the dynamic impact test results, if a double seat structure is used, there are only three armrests in the double seat structure, and the middle armrest is shared, when the arms of the two dummies 200 are placed on the middle armrest at the same time during the impact test, the arms will interfere with each other, and it is impossible to ensure absolute symmetrical placement, if a single seat structure is used, only one seat cushion replacement part 2 and one dummy 200 can be placed during each impact test, and when comparative impact tests are performed, two impact tests need to be performed, which cannot ensure that the comparison can be completed in one impact test, when two impact tests are performed, the test variables cannot be controlled, the seating state of the dummy 200, the impact waveform of each time, and the deformation of the seat 100 after the first impact when the impact is performed twice, which affects the second impact, and finally leads to inconsistent test conditions.

[0030] As a preferred embodiment, please refer to Figure 1 , the seat 100 is a civil aviation seat, the model is KKY421, which is suitable for various models and has a wide coverage, compared with the simple and rough structure of the rigid seat, the rigid seat structure is too simple, which only ensures that the dummy 200 can be placed during the impact process, and is not the posture of the dummy 200 when the dummy 200 actually sits on the seat 100, this way of impact test also cannot obtain the impact test data when the dummy 200 actually sits on the seat, the device of the present application is a real aviation seat structure, which can simulate the real installation condition of the seat cushion and the reference point of the seat, and the test collected data can reflect the performance of the seat cushion on the protection of the passenger, when different seat cushion replacement parts 2 are placed, by adjusting the backrest angle of the seat 100, it can be ensured that the reference point (SRP) of the seat 100 does not change when the dummy 200 is placed on the seat cushion replacement part 2.

[0031] As a preferred embodiment, the seat 100 is arranged along the vertical direction of the movement direction of the test platform, so that the impact load received by the three seats 110 is the same, and the consistency of the test conditions is ensured.

[0032] As a preferred embodiment, please refer to Figure 2 , the seat cushion original part 1 and the seat cushion replacement part 2 are fixedly arranged on the chair basin of the seat 100, and are detachably fixedly arranged on the bottom surface of the seat 110 through the chair basin, so that the disassembly and assembly of the seat cushion replacement part 2 is more convenient.

[0033] As a preferred embodiment, the dummy 200 is fixedly arranged on the seat 100 through a safety belt, and the seating posture of the passenger.

[0034] As a preferred embodiment, the impact mechanism further comprises a photometric assembly arranged on the side of the test platform, for monitoring the motion posture and deformation of the seat 100, to ensure that the deformation of the seat 100 after impact is within a reasonable range.

[0035] As a preferred embodiment, the photometric assembly comprises at least two cameras, each of which is arranged on the two sides of the seat 100 for photographing the seat 100.

[0036] In order to better understand the present application, the following will be combined with Figure 1 Figure 3 The working principle of the technical scheme of the present application will be described in detail:

[0037] When the cushion replacement 2 is subjected to dynamic impact test, the original cushion 1 and the cushion replacement 2 are respectively detachably installed on the bottom surface of the two seat 110, the two dummies 200 are respectively placed on the original cushion 1 and the cushion replacement 2, and the two dummies 200 are detachably connected with the seat 100, the driving assembly is controlled to drive the test platform to move at high speed along the length direction of the slide rail, the impact load in the moving direction of the test platform can be provided to the seat 100, the lumbar load of the two dummies 200 can be monitored by the two load sensors, and the dynamic performance of the original cushion 1 and the cushion replacement 2 can be judged according to the monitored lumbar load, the test device can simultaneously perform dynamic test on the original cushion 1 and the cushion replacement 2, and can ensure that the test conditions of the original and replacement parts are the same, and the test data is more real and intuitive.

[0038] The aviation cushion original part and replacement part performance comparison dynamic test device provided by the present application has the following beneficial effects:

[0039] (1) The two dummies 200 are respectively placed on the left and right sides, and do not interfere with each other during the dynamic impact test, which can avoid the influence between the two dummies 200 during the test process, and ensure the authenticity of the dynamic impact test result;

[0040] (2) The device of the present application is a real aviation seat structure, which can simulate the real installation condition of the cushion and the seat reference point, and the test collected data can reflect the performance of the real installed cushion parts on the passenger protection, when different cushion replacements 2 are placed, the seat back angle of the seat 100 can be adjusted to ensure that the seat reference point (SRP) of the seat 100 does not change when the dummy 200 is placed on the cushion replacement 2;

[0041] ​(3) the test device can simultaneously test the seat cushion original piece 1 and the seat cushion replacement piece 2, and can ensure that the test conditions of the original piece and the replacement piece are the same, the test data is more true and intuitive, the original piece and the replacement piece are verified at the same time in a single test, the test cost is 100,000 yuan for a single test, and the device can save half of the test cost.

[0042] The specific implementation of the utility model above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An aviation seat cushion component and replacement performance comparison dynamic test device, characterized in that, The utility model relates to a seat impact test device, comprising: an impact mechanism reciprocally movable in a horizontal plane to provide a preset impact load in a horizontal direction; a seat detachably fixed on the impact mechanism and having three seat portions arranged side by side, the bottom surface of each of the seat portions being configured to detachably mount a seat cushion original and a seat cushion replacement; two dummies respectively placed on the seat cushion original and the seat cushion replacement and each detachably fixed to the seat; two load sensors respectively arranged in the dummies to monitor the lumbar load of the dummies.

2. The dynamic test device for performance comparison between an original and a replacement of an aircraft seat cushion according to claim 1, wherein The impact mechanism comprises a plurality of slide rails, a test platform and a driving assembly, each of the slide rails is arranged parallel to each other and detachably fixed horizontally on the ground, the test platform is arranged horizontally and slidably arranged on each of the slide rails, the seat is detachably fixed on the test platform, the driving assembly is connected to the test platform to drive the test platform to move along the length direction of each of the slide rails to provide a preset impact load in a horizontal direction.

3. The dynamic test device for comparing the performance of an aircraft seat cushion component and a replacement component of claim 1, wherein, The bottom surface of each of the seat portions forms an included angle a with the test platform, and the included angle a is between 80° and 90°.

4. The dynamic test device for performance comparison between an original and a replacement of an aircraft seat cushion according to claim 2, wherein The adjacent seat portions share an armrest.

5. The dynamic test apparatus for comparing the performance of an aircraft seat cushion component and a replacement component of claim 1, wherein, The seat is a civil aircraft seat, and the model thereof is KKY421.

6. The dynamic test apparatus for comparing the performance of an aircraft seat cushion component and a replacement component of claim 4, wherein, The seat is arranged perpendicularly to the moving direction of the test platform.

7. The dynamic test apparatus for comparing the performance of an aircraft seat cushion component and a replacement component of claim 1, wherein, The seat cushion original and the seat cushion replacement are fixed on the seat pan of the seat and detachably fixed on the bottom surface of the seat portions via the seat pan.

8. The dynamic test apparatus for comparing the performance of an aircraft seat cushion component and a replacement component of claim 1, wherein, The dummy is fixed on the seat via a safety belt.

9. The dynamic test apparatus for comparing the performance of an aircraft seat cushion component and a replacement component of claim 2, wherein, The impact mechanism further comprises a light measurement assembly arranged on the side of the test platform to monitor the motion posture and deformation of the seat.

10. The dynamic test apparatus for comparing the performance of an aircraft seat cushion component and a replacement component of claim 9, wherein, The light measurement assembly comprises at least two cameras, each of the cameras is arranged on the side of the seat to take a picture of the seat.

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