Aero seat static strength test platform and test method

Abstract

The invention relates to an aero seat static strength test platform and test method, and relates to the technical field of aero seat static strength tests. The test platform comprises a test platform body capable of rotating by 1-360 degrees, a distance automatic adjusting seat fixing track, an automatic adjusting hydraulic action system, an automatic adjusting prosthesis module, an ATD dummy, a seven-axis or more measuring arm, a seat deformation measuring system and a control module, and a test seat is arranged on the distance automatic adjusting seat fixing track. The automatic adjusting prosthesis module and the ATD dummy are both arranged on the test seat, the automatic adjusting hydraulic action system is used for applying external force to the automatic adjusting prosthesis module, the ATD dummy and the seven-axis or more measuring arms are used for measuring SRP points, and the seat deformation measuring system is used for measuring test results of the test seat. The civil aircraft aero seat static strength test device has the effect of improving the civil aircraft aero seat static strength test efficiency and the test data accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of static strength testing of aviation seats, and in particular to a static strength testing platform and testing method for aviation seats. Background Art

[0002] Civil aircraft passenger seats are key equipment for ensuring the safety of passengers and travel comfort during flight, and are also one of the most important airborne equipment for civil aircraft projects. In survivable crashes of civil aircraft, aviation seats are the last barrier to protect passengers from fatal injuries. Good energy absorption and buffering design and constraints can reduce the impact on passengers, prevent passengers from colliding with other equipment in the cabin, and reduce the possibility of secondary injuries to passengers. Although my country has been developing and producing civil aircraft seats for decades, and has gained a lot of experience from development to airworthiness certification, there is still a big gap compared with foreign countries, especially in the requirements and test methods of seat airworthiness certification tests. In the existing technology, the traditional static load test has a lot of manual preparation, measurement, testing and other work, the test procedure is cumbersome and lengthy, the test efficiency is low, and only a maximum of 2 tests under different working conditions can be completed in a single day. There is also a problem of test data accuracy, so there is room for improvement. Summary of the invention

[0003] In order to improve the efficiency of static strength testing of civil aircraft aviation seats and the accuracy of test data, the present application provides an aviation seat static strength testing platform and testing method.

[0004] In the first aspect, the present application provides an aviation seat static strength test platform that adopts the following technical solutions: A static strength test platform for aviation seats, comprising a 1-360° rotatable test platform, a seat fixing track with automatic spacing adjustment, an automatic adjustment hydraulic action system, an automatic adjustment prosthesis module, an ATD dummy, a 7-axis or more measuring arm, a seat deformation measurement system and a control module, wherein the 1-360° rotatable test platform, the seat fixing track with automatic spacing adjustment, the automatic adjustment hydraulic action system, the automatic adjustment prosthesis module, the 7-axis or more measuring arm and the seat deformation measurement system are all communicatively connected with the control module, the seat fixing track with automatic spacing adjustment, the automatic adjustment hydraulic action system, the 7-axis or more measuring arm and the seat deformation measurement system are all arranged in the 1-360° rotatable test platform, a test seat is arranged on the seat fixing track with automatic spacing adjustment, the automatic adjustment prosthesis module and the ATD dummy are both arranged on the test seat, the automatic adjustment hydraulic action system is used to apply external force to the automatic adjustment prosthesis module, the ATD dummy and the 7-axis or more measuring arm are used to measure SRP points, and the seat deformation measurement system is used to measure test results of the test seat.

[0005] Optionally, four seat fixing tracks are arranged on the seat fixing track with automatic adjustment of spacing.

[0006] Optionally, the automatic adjusting hydraulic action system includes at least 13 automatic adjusting hydraulic actuators, two of which are capable of forward and backward movement, five of which are capable of up and down movement, and the remaining six of which are capable of lateral movement.

[0007] Optionally, both the bottom wall and the side walls of the automatically adjustable prosthesis module are provided with automatic adjustment devices for the position of the prosthesis module.

[0008] In a second aspect, the present application also provides a method for testing the static strength of an aviation seat, comprising the following steps: SRP point measurement: according to the original design seat spacing size of the test seat, adjust the angle and position of the 1-360° rotatable test platform and the automatic spacing adjustment seat fixing track, install the test seat on the automatic spacing adjustment seat fixing track, and after the test seat is installed, install the ATD dummy on the aisle side at the seat position where the test seat needs to be loaded. According to the preset SRP point test method in the control module as the standard recommended H point method, after measuring with a 7-axis or higher measuring arm, obtain the SRP point coordinate position, and remove the ATD dummy; Installation of the automatic adjustment prosthesis module: according to the test requirements, the automatic adjustment prosthesis module is installed on the test seat through the automatic adjustment hydraulic action system. According to the SRP point coordinate position obtained from the above test and the required load application point position, after setting the corresponding parameters, the load application position is automatically adjusted through the automatic adjustment device of the prosthesis module position on the automatic adjustment prosthesis module. After the position is adjusted, the automatic adjustment hydraulic action system is connected to the automatic adjustment prosthesis module to complete the process; Load test: Through the measurement of the seat deformation measurement system, the deformation data of the test seat before the test and the photos of the corresponding position before deformation are collected. After the basic data collection is completed, the position of the automatic adjustment hydraulic action system is arranged on the control module and the predetermined load value is set. At this time, the automatic adjustment hydraulic action system is automatically adjusted, and the experiment starts. The control module synchronously collects the load curve and maintains the predetermined load for more than 3S; Deformation data measurement: Move the automatic adjustment hydraulic action system to the initial position. At this time, the deformation measurement system collects the deformation data of the test seat after the test and the photos of the corresponding position before deformation. Through automatic data comparison, a conclusion is drawn and the test is completed.

[0009] Optionally, the H-point method includes: Mark the center of mass and H point of the head of the ATD dummy; Place the ATD dummy on the test seat and measure the horizontal and vertical coordinates of the test seat reference point, H point and head center of mass; Establish the backrest tangent line: establish a line that is 4° to the line connecting the H point and the center of mass of the head on the ATD dummy; establish a line that passes through the point 1127mm directly behind the H point and is parallel to the backrest tangent line; Establish a compression cushion datum line (CDD), which is a line parallel to the floor level, 97mm below the H point; The SRP point is located at the intersection of the CDD and the tangent line of the backrest.

[0010] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application can minimize the workload of manual preparation, and realize automatic detection of test seat reference points, automatic application of prosthesis modules, automatic adjustment of prosthesis modules, automatic static seat testing, and automatic detection of deformation data before and after the test with the help of control module settings, which greatly reduces the test time, improves the test efficiency, and reduces the test cost; 2. Compared with the traditional test method, the present invention introduces a prosthesis module which can automatically adjust its position based on the seat reference point. According to the preset prosthesis module placement position, the prosthesis module is automatically placed as required. The six-way adjustable hydraulic load applies the load according to the preset load value. The 7-axis and above measuring arm measures the deformation after the test to improve and ensure the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an aviation seat static strength test platform in an embodiment of the present application.

[0012] Figure 2 It is a structural schematic diagram of the automatic adjustment hydraulic actuation system in the embodiment of the present application.

[0013] Figure 3 It is a schematic diagram of the structure of the automatic adjustment prosthesis module in the embodiment of the present application.

[0014] Figure 4 It is a schematic diagram of the structure of a 7-axis or more measuring arm and a seat deformation measuring system in an embodiment of the present application.

[0015] Figure 5 It is a flowchart of a static strength test method for an aviation seat in an embodiment of the present application.

[0016] Figure 6 Schematic diagram of the H-point method in the embodiment of the present application.

[0017] Explanation of the accompanying reference numerals: 1. 1-360° rotatable test platform; 2. Seat fixing track with automatic spacing adjustment; 3. Automatic adjustment of hydraulic actuation system; 4. Automatic adjustment of prosthesis module; 41. Automatic adjustment device for position of prosthesis module; 5. ATD dummy; 6. 7-axis and above measuring arm; 7. Seat deformation measurement system; 8. Control module; 9. Test seat. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-6 This application is described in further detail.

[0019] The present application embodiment discloses a static strength test platform for aviation seats. Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a 1-360° rotatable test platform 1, a seat fixing track 2 with automatically adjustable spacing, an automatically adjustable hydraulic action system, an automatically adjustable prosthesis module 4, an ATD dummy 5, a 7-axis or more measuring arm 6, a seat deformation measurement system 7 and a control module 8. In this embodiment, the control module 8 is a computer PC, and the 1-360° rotatable test platform 1, the seat fixing track 2 with automatically adjustable spacing, the automatically adjustable hydraulic action system, the 7-axis or more measuring arm 6 and the seat deformation measurement system 7 are all communicatively connected to the control module 8.

[0020] Reference Figure 1 The 1-360° rotatable test platform 1 can be rotated according to different types and sizes of seats. The seat fixing track 2 with automatic spacing adjustment, the automatic adjustment hydraulic action system, the 7-axis and above measuring arm 6 and the seat deformation measurement system 7 are all arranged in the 1-360° rotatable test platform 1. The seat fixing track 2 with automatic spacing adjustment can automatically adjust the distance of the chair legs according to the number of chair legs and the chair leg spacing. After the corresponding size is input on the control module 8, it is driven by the motor to adjust. The seat fixing track 2 with automatic spacing adjustment is initially provided with 4 seat fixing tracks.

[0021] Reference Figure 2 The automatic adjusting hydraulic action system includes at least 13 automatic adjusting hydraulic actuators, two of which are for forward and backward movement, five of which are for up and down movement, and the remaining six are for lateral movement.

[0022] Reference Figure 4 The automatically adjustable prosthesis module 4 is arranged on the test seat 9 for measuring the SRP point. The bottom wall and the side wall of the automatically adjustable prosthesis module 4 are provided with a prosthesis module position automatic adjustment device 41. The prosthesis module position automatic adjustment device 41 adopts a sensor and a motor to automatically adjust the load application position. In the embodiment of the present application, the load application position is point A.

[0023] Reference Figure 3 The 7-axis and above measuring arm 6 is equipped with a variety of probe components, which can achieve high-precision contact measurement and high-performance 3D laser scanning. When measuring various high-brightness and high-dark surfaces, the laser power can be automatically adjusted without surface pretreatment. At the same time, the equipped probes can be hot-swapped during the measurement process, without shutdown and calibration, which is efficient and convenient. The 7-axis and above measuring arm 6 has an ultra-light body and quick installation function, which improves the portability of the equipment and can be moved freely. The design of the wireless rotation of the measuring machine spindle and the low-friction handle greatly reduces the user's operating fatigue. In addition, the 7-axis and above measuring arm 6 is also a guarantee of high-precision measurement.

[0024] Reference Figure 3 The seat deformation measurement system 7 can measure, collect and compare the deformation data of the test seat 9 before and after the test based on the 7-axis or more measuring arm 6 and the control module 8, automatically compare the results, and draw test conclusions. In this embodiment, the seat deformation measurement system 7 can use a camera.

[0025] The implementation principle of an aviation seat static strength test platform in an embodiment of the present application is: it can minimize the workload of manual preparation, and use the control module 8, the ATD dummy 5 and the H-point method to realize automatic detection of the reference point of the test seat 9, automatic application of the prosthesis module, automatic adjustment of the prosthesis module, automatic static testing of the seat, and automatic detection of deformation data before and after the test, which greatly reduces the test time, improves the test efficiency, and reduces the test cost.

[0026] The present application also provides a method for testing the static strength of an aircraft seat. Figure 1-Figure 6 , including the following steps: S1: SRP point measurement: According to the original design seat spacing size of the test seat 9, adjust the angle and position of the 1-360° rotatable test platform 1 and the automatic spacing adjustment seat fixing track 2, and install the test seat 9 on the automatic spacing adjustment seat fixing track 2. After the test seat 9 is installed, install the ATD dummy 5 on the aisle side at the seat position where the test seat 9 needs to be loaded. According to the SRP point test method preset in the control module 8, the standard recommended H point method is used. After measurement by the 7-axis or above measuring arm 6, the SRP point coordinate position is obtained, and the ATD dummy 5 is removed.

[0027] S11: The H-point method includes: Mark the center of mass and H point of the head of ATD dummy 5; Place the ATD dummy 5 on the test seat 9 and measure the horizontal and vertical coordinates of the reference point, H point and head mass center (G point) of the test seat 9; Establish the backrest tangent line: establish a line that forms a 4° angle with the line connecting the H point and the center of mass of the head on the ATD dummy 5; establish a line that passes through the point 127 mm directly behind the H point and is parallel to the backrest tangent line; Establish a compression cushion datum line (CDD), which is a line parallel to the floor level, 97mm below the H point; The SRP point is located at the intersection of the CDD and the tangent line of the backrest.

[0028] S2: Installation of the automatically adjustable prosthesis module 4: According to the test requirements, the automatically adjustable prosthesis module 4 is installed on the test seat 9 through the automatically adjustable hydraulic action system. According to the SRP point coordinate position and the required load application point position obtained from the above test, after setting the corresponding parameters, the load application position is automatically adjusted through the prosthesis module position automatic adjustment device 41 on the automatically adjustable prosthesis module 4. After the position is adjusted, the automatically adjustable hydraulic action system is connected to the automatically adjustable prosthesis module 4 to complete the connection.

[0029] S3: Load test: Through the measurement of the seat deformation measurement system 7, the deformation data of the test seat 9 before the test and the photos of the corresponding position before deformation are collected. After the basic data collection is completed, the position of the automatic adjustment hydraulic action system is arranged on the control module 8 and the predetermined load value is set. At this time, the automatic adjustment hydraulic action system is automatically adjusted, and the experiment starts. The control module 8 synchronously collects the load curve and maintains the predetermined load for more than 3S.

[0030] S4: Deformation data measurement: Move the automatic adjustment hydraulic action system to the initial position. At this time, the deformation measurement system collects the deformation data of the test seat 9 after the test and the photos of the corresponding position before deformation. Through automatic data comparison, a conclusion is drawn and the test is completed.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aviation seat static strength test platform, characterized by: The invention comprises a 1-360° rotatable test platform (1), a seat fixing track (2) with automatically adjustable spacing, an automatically adjustable hydraulic action system, an automatically adjustable prosthesis module (4), an ATD dummy (5), a 7-axis or more measuring arm (6), a seat deformation measuring system (7) and a control module (8), wherein the 1-360° rotatable test platform (1), the seat fixing track (2) with automatically adjustable spacing, an automatically adjustable hydraulic action system, an automatically adjustable prosthesis module (4), a 7-axis or more measuring arm (6) and a seat deformation measuring system (7) are all connected to the control module (8) for communication. The automatic adjustment hydraulic action system, the 7-axis or more measuring arm (6) and the seat deformation measurement system (7) are all arranged in a 1-360° rotatable test platform (1); a test seat (9) is arranged on the spacing automatic adjustment seat fixing track (2); the automatic adjustment prosthesis module (4) and the ATD dummy (5) are both arranged on the test seat (9); the automatic adjustment hydraulic action system is used to apply external force to the automatic adjustment prosthesis module (4); the ATD dummy (5) and the 7-axis or more measuring arm (6) are used to measure the SRP point; and the seat deformation measurement system (7) is used to measure the test result of the test seat (9).

2. The static strength test platform for aviation seats according to claim 1, characterized in that: Four seat fixing rails are arranged on the automatically adjustable spacing seat fixing rail (2).

3. The static strength test platform for aviation seats according to claim 1, characterized in that: The automatic adjusting hydraulic action system comprises at least 13 automatic adjusting hydraulic actuators, two of which are capable of forward and backward movement, five of which are capable of upward and downward movement, and the remaining six of which are capable of lateral movement.

4. The static strength test platform for aviation seats according to claim 1, characterized in that: The bottom wall and side walls of the automatically adjustable prosthesis module (4) are both provided with a prosthesis module position automatic adjustment device (41).

5. A static strength test method for an aviation seat, characterized in that: The steps include: SRP point measurement: according to the original design seat spacing size of the test seat (9), adjust the angle and position of the 1-360° rotatable test platform (1) and the spacing automatic adjustment seat fixing track (2), install the test seat (9) on the spacing automatic adjustment seat fixing track (2), after the test seat (9) is installed, install the ATD dummy (5) on the aisle side at the seat position where the test seat (9) needs to be loaded, and according to the SRP point test method preset in the control module (8) as the standard recommended H point method, after measuring with a 7-axis or higher measuring arm (6), obtain the SRP point coordinate position, and remove the ATD dummy (5); Installation of the automatically adjustable prosthesis module (4): according to the test requirements, the automatically adjustable prosthesis module (4) is installed on the test seat (9) through the automatically adjustable hydraulic action system. According to the SRP point coordinate position obtained from the above test and the required load application point position, after setting the corresponding parameters, the load application position is automatically adjusted through the prosthesis module position automatic adjustment device (41) on the automatically adjustable prosthesis module (4). After the position is adjusted, the automatically adjustable hydraulic action system is connected to the automatically adjustable prosthesis module (4) to complete the connection; Load test: by measuring the seat deformation measurement system (7), the deformation data of the test seat (9) before the test and the photos of the corresponding position before the deformation are collected. After the basic data collection is completed, the position of the automatic adjustment hydraulic action system is arranged on the control module (8) and the predetermined load value is set. At this time, the automatic adjustment hydraulic action system is automatically adjusted, and the experiment starts. The control module (8) synchronously collects the load curve and maintains the predetermined load for more than 3S; Deformation data measurement: the automatic adjustment hydraulic action system is moved to the initial position, at which time the deformation measurement system collects deformation data of the test seat (9) after the test and photos of the corresponding position before deformation, and draws a conclusion through automatic data comparison, indicating that the test is completed.

6. The static strength test method for an aviation seat according to claim 1, characterized in that: The H-point method includes: Mark the center of mass and H point of the head of the ATD dummy (5); Placing the ATD dummy (5) on a test seat (9) and measuring the horizontal and vertical coordinates of the reference point, H point and head center of mass of the test seat (9); Establish a backrest tangent line: establish a line that forms an angle of 4° with the line connecting the H point and the center of mass of the head on the ATD dummy (5); establish a line that passes through a point 1127 mm directly behind the H point and is parallel to the backrest tangent line; Establish a compression cushion datum line (CDD), which is a line parallel to the floor level, 97mm below the H point; The SRP point is located at the intersection of the CDD and the tangent line of the backrest.

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