An ejection seat test device and a test control system

Abstract

The present invention relates to the field of automated testing technology and discloses an ejection seat test device and a test control system. The present invention, through the setting of the test control system, performs detection through static simulation testing and dynamic simulation testing respectively to obtain a fourth static pull-out force, a first static pull-out force, a second static pull-out force, a third static pull-out force, a second dynamic pull-out force, a third dynamic pull-out force, and a fourth dynamic pull-out force. Then, a pull-out force estimation module calculates a second predicted pull-out force, a third predicted pull-out force, and a fourth predicted pull-out force to determine whether a preset first pull-out threshold, a second pull-out threshold, and a third pull-out threshold are met under an actual target ejection speed. In addition, a simulation speed correction strategy is provided to determine whether a preset simulation speed meets the requirements. If not, an expanded simulation speed is generated, so that a curve simulation result is closer to reality and the test result is more accurate.

Description

Technical Field

[0001] The present invention relates to the field of automated testing technology, and in particular to an ejection seat testing device and a testing control system. Background Art

[0002] An ejection seat is a seat used by pilots. In the event of an aircraft disaster, a powered unit beneath the seat ejects the pilot from the cabin, deploying a parachute for a safe landing. To use the ejection seat, the pilot first manually pulls the ejection handle. The seat restraints secure the pilot's body and legs to prevent collision with cabin equipment during ejection. Then, a powered unit at the rear of the seat ejects both the pilot and the seat out of the cabin.

[0003] Ejection seats need to undergo safety testing before being put into use. The existing testing method usually conducts static testing on each test item to obtain the test results. However, ejection seats are usually in a dynamic state in actual application, which leads to deviations in the test results. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide an ejection seat test device and a test control system, which have the characteristics of accurate detection results.

[0005] To achieve the first object of the present invention, the present invention provides the following technical solutions:

[0006] An ejection seat testing device and method includes a test bench, the test bench including a first mounting cabinet and a second mounting cabinet, the first mounting cabinet and the second mounting cabinet being arranged opposite to each other, the first mounting cabinet being obliquely mounted with a guide rail for sliding the ejection seat,

[0007] The first installation cabinet is provided with a cover lifting mechanism and a cable separation test assembly, and the cable separation test assembly is used to detect the fourth pulling force when the cable and the separation connector are separated.

[0008] The second mounting cabinet is provided with a handle detection component, a leggings detection component and a lock bullet detection component. The handle detection component is used to detect a first pulling force when the handle is separated from the socket, the leggings detection component is used to detect a second pulling force when the leggings are disengaged, and the lock bullet detection component is used to detect a third pulling force when the lock bullet is separated.

[0009] When the ejection seat is driven to slide along the guide rail by the ejection cover lifting mechanism at different moving speeds, the cable separation test assembly, the leg wrap detection assembly and the bullet lock detection assembly work synchronously.

[0010] Furthermore, a rotating cross arm is provided on the second installation cabinet, and the rotating cross arm is rotatably installed in the cabinet. When the rotating cross arm rotates, the rotating cross arm drives the handle detection assembly to approach or move away from the guide rail.

[0011] Furthermore, the handle detection assembly includes a first electric pull rod, a first force sensor, a first steel cable and a clamp, wherein the mounting portion of the first electric pull rod is installed at the rotating end of the rotating cross arm, the output end of the first electric pull rod is arranged at the free end of the rotating cross arm, the output direction of the first electric pull rod is arranged along the length direction of the rotating cross arm, one end of the first steel cable is fixedly connected to the output end of the first electric pull rod, and the other end of the first steel cable is connected to the first force sensor and the clamp in sequence, and the clamp is used to connect to the handle.

[0012] Furthermore, the leggings detection assembly includes a second electric pull rod, a second steel cable, a second force sensor and a leggings simulation piece. The second electric pull rod is installed in the second mounting cabinet. One end of the second steel cable is fixedly connected to the second electric pull rod. The other end of the second steel cable is connected to the second force sensor and then fixedly connected to the leggings simulation piece. The leggings simulation piece is used to be connected to the leggings to simulate the legs. A second reversing slide is provided in the second mounting cabinet. The second reversing slide is for the second steel cable to slide and reverse.

[0013] Furthermore, the lock bullet detection assembly includes a third electric pull rod, a third steel cable, a third force sensor and a connecting lock. The third electric pull rod is installed in the second installation cabinet. One end of the third steel cable is fixedly connected to the third electric pull rod. The other end of the third steel cable is connected to the third force sensor and then fixedly connected to the lock. The lock is used to connect the lock bullet. A third reversing slide groove is provided in the second installation cabinet, and the third reversing slide groove is used for the third steel cable to slide and reverse.

[0014] Furthermore, the lid throwing and lifting mechanism includes a simulated cabin exit power assembly and a beam assembly, wherein the simulated cabin exit power assembly is used to drive the beam assembly to slide along the sliding direction of the guide rail, and the cabin exit power assembly includes

[0015] A driving screw, wherein the axial direction of the driving screw is parallel to the length direction of the guide rail and the driving screw is rotatably installed in the first installation cabinet,

[0016] a slider, the slider being threadedly connected to the drive screw,

[0017] A guide plate, the guide plate is slidably connected to the guide rail, and the guide plate is fixedly connected to the slider,

[0018] A driving power source drives the driving screw to rotate and drives the guide plate to slide through a slider.

[0019] Furthermore, the beam assembly is arranged above the simulated extravehicular power assembly, and the beam assembly includes a support frame and an adjustment beam. The support frame is fixedly connected to the guide plate, and the middle part of the adjustment beam is rotatably connected to the support frame. Both ends of the adjustment beam are arranged on both sides of the guide rail. Both ends of the adjustment beam are provided with seat hooks, and the seat hooks are used to connect the ejection seat. An adjustment steel cable is connected between the seat hook and the adjustment beam, and the length of the adjustment steel cable is adjustable.

[0020] Furthermore, the cable separation test assembly includes a fourth electric pull rod, two fourth steel cables, two fourth force sensors, a cable hook and a separation joint hook. The fourth electric pull rod is installed under the guide rail. One end of the fourth steel cable is fixedly connected to the fourth electric pull rod. The other end of the fourth steel cable is connected to the fourth force sensor and then fixedly connected to the lock. The lock is used to connect the lock spring. The test bench is provided with a fourth reversing slide groove, and the fourth reversing slide groove is used for the fourth steel cable to slide and reverse.

[0021] To achieve the second purpose of the present invention, the present invention provides the following technical solutions:

[0022] An ejection seat test control system is applied to the ejection seat test device as described above, and the ejection seat test control system includes

[0023] A static test control module, wherein the static test control module generates a static signal to the ejection cover lifting mechanism to keep the ejection seat stationary, and sequentially controls the cable separation test assembly (7), the handle detection assembly (4), the legging detection assembly (5) and the bullet lock detection assembly (6) according to a test sequence to respectively measure the fourth static pull-out force, the first static pull-out force, the second static pull-out force and the third static pull-out force;

[0024] A dynamic test control module, wherein the dynamic test control module is configured with a plurality of simulation speeds, and the dynamic test control module controls the ejection cover lifting mechanism (8) to drive the ejection seat to slide along the guide rail (101) at different simulation speeds, so as to obtain a second dynamic pull-out force, a third dynamic pull-out force and a fourth dynamic pull-out force by synchronous detection of the legging detection component (5), the bullet lock detection component (6) and the cable separation test component (7) at different simulation speeds;

[0025] a pull-off force estimation module, wherein the pull-off force estimation module obtains the second static pull-off force, the third static pull-off force, and the fourth static pull-off force, and a plurality of second dynamic pull-off forces, the fourth dynamic pull-off force, and the fourth dynamic pull-off force;

[0026] The second static pull-off force, the third static pull-off force, the fourth static pull-off force, the second dynamic pull-off force, the fourth dynamic pull-off force and the fourth dynamic pull-off force are respectively fitted with the simulation speed to obtain the second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve.

[0027] estimating a second predicted pull-off force, a third predicted pull-off force, and a fourth predicted pull-off force at a target ejection velocity according to the second dynamic pull-off curve, the third dynamic pull-off curve, and the fourth dynamic pull-off curve;

[0028] The second predicted pull-off force, the third predicted pull-off force and the fourth predicted pull-off force are respectively compared with the preset second pull-off threshold, the third pull-off threshold and the fourth pull-off threshold. If the second predicted dynamic pull-off force is greater than or equal to the preset second pull-off threshold, it indicates that the leggings pull-off force is qualified; if the third predicted dynamic pull-off force is greater than or equal to the preset third pull-off threshold, it indicates that the lock spring pull-off force is qualified; if the fourth predicted pull-off force is less than or equal to the preset fourth pull-off force threshold, it indicates that the cable and separation joint pull-off force are qualified.

[0029] Furthermore, the dynamic test control module is configured with a simulation speed correction strategy, which includes obtaining the generated second dynamic pull-off curve, third dynamic pull-off curve and fourth dynamic pull-off curve, obtaining the first reference point and the second reference point on the second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve respectively, sorting the preset simulation speeds to obtain the first simulation speed value and the second simulation speed value, the first simulation speed value is specifically the maximum value among the simulation speeds, the second simulation speed value is specifically the second largest value among the simulation speeds, the first reference point is specifically the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve The point on the curve corresponding to the first simulation speed value, the second reference point is specifically the point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve corresponding to the second simulation speed value, and the slope differences at the positions of the first reference point and the second reference point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve are calculated respectively. If each slope difference is less than or equal to the corresponding preset slope difference, it indicates that the simulation speed is appropriate. If there is a slope difference greater than the corresponding preset slope difference, a supplementary simulation speed value is generated as the simulation speed, and the dynamic simulation test, pull-off force estimation, and simulation speed correction strategy are repeated until each slope difference is less than or equal to the corresponding preset slope difference.

[0030] Beneficial effects of the present invention:

[0031] 1. The present invention uses multiple test components to measure the necessary parameters during the operation of the ejection seat. Considering that ejection seats operate in a dynamic environment, a cover-lifting mechanism is provided to simulate the ejection process of the seat. Simultaneously, the various test components are used to perform tests, thereby obtaining the pull-out force under dynamic conditions. This testing method more closely resembles the actual use of the ejection seat, resulting in more accurate test results.

[0032] 2. The present invention tests the control system through the setting of static simulation test and dynamic simulation test respectively to obtain the fourth static pull-out force, the first static pull-out force, the second static pull-out force, the third static pull-out force, the second dynamic pull-out force, the third dynamic pull-out force and the fourth dynamic pull-out force, and then calculates the second predicted pull-out force, the third predicted pull-out force and the fourth predicted pull-out force through the pull-out force estimation module to determine whether the preset first pull-out threshold, the second pull-out threshold and the third pull-out threshold are met under the actual target ejection speed. In addition, a simulation speed correction strategy is provided to determine whether the preset simulation speed meets the requirements. If it does not meet the requirements, an expanded simulation speed is generated to make the curve simulation results closer to reality and the test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 1 is an overall schematic diagram of this embodiment;

[0034] Figure 2 Schematic diagram of the overall structure of the test bench in this embodiment;

[0035] Figure 3 is a schematic diagram of the internal structure of the second installation cabinet in this embodiment;

[0036] Figure 4 Schematic diagram of the structure of the rotating cross arm and handle detection assembly in this embodiment;

[0037] Figure 5 1 is a schematic structural diagram of the legging detection component and the bullet lock detection component in this embodiment from a first perspective;

[0038] Figure 6 1 is a schematic structural diagram of the legging detection component and the bullet lock detection component in this embodiment from a second viewing angle;

[0039] Figure 7 is a schematic diagram of the internal structure of the first installation cabinet in this embodiment;

[0040] Figure 8 Schematic diagram of the structure of the adjustable beam in this embodiment;

[0041] Figure 9 Schematic diagram of the overall structure of the cable separation test assembly in this embodiment.

[0042] Reference numerals:

[0043] 1. First mounting cabinet; 101. Guide rail; 2. Second mounting cabinet; 3. Rotating cross arm; 4. Handle detection assembly; 41. First electric pull rod; 42. First force sensor; 43. First steel cable; 44. Clamp; 5. Gaiter detection assembly; 51. Second electric pull rod; 52. Second force sensor; 53. Second steel cable; 54. Gaiter simulation piece; 55. Second mounting bracket; 551. Second reversing slide; 6. Lock detection assembly; 61. Third electric pull rod; 62. Third force sensor; 63. Third steel cable; 64. 4. Connecting lock; 65. Third mounting bracket; 651. Third reversing slide; 7. Cable separation test assembly; 71. Fourth electric pull rod; 72. Fourth force sensor; 73. Fourth steel cable; 74. Cable hook; 75. Separation joint hook; 76. Fourth mounting bracket; 761. Fourth reversing slide; 8. Throwing cover lifting mechanism; 81. Drive screw; 811. Slider; 82. Guide plate; 83. Drive power source; 84. Support frame; 85. Adjustment beam; 86. Seat hook; 87. Adjustment steel cable; 9. Electrical cabinet. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component. When a component is considered to be "disposed on" another component, it may be directly disposed on the other component or there may be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] like Figure 1 and Figure 2 As shown, an ejection seat test device according to this embodiment includes a test bench and an electrical cabinet. The electrical cabinet 9 and the test bench are arranged separately for convenient on-site layout. The test bench includes a first mounting cabinet 1 and a second mounting cabinet 2, which are arranged opposite each other. The first mounting cabinet 1 is used to mount the ejection seat. Specifically, a guide rail 101 is installed at an angle on the first mounting cabinet 1 for sliding movement of the ejection seat. The first mounting cabinet 1 is equipped with a cover ejection lifting mechanism 8 and a cable separation test assembly 7. The cable separation test assembly 7 is used to detect the fourth pull-out force when the cable and the separation connector are disconnected. The second mounting cabinet 2 is equipped with a handle detection assembly 4, a legging detection assembly 5, and a lock bullet detection assembly 6. The handle detection assembly 4 is used to detect the first pull-out force when the handle is separated from the socket. The legging detection assembly 5 is used to detect the second pull-out force when the legging is disengaged. The lock bullet detection assembly 6 is used to detect the third pull-out force when the lock bullet is separated. When the ejection seat is driven to slide along the guide rail 101 by the ejection cover lifting mechanism 8 at different moving speeds, the cable separation test assembly 7, the legging detection assembly 5 and the bullet lock detection assembly 6 work synchronously.

[0048] In this embodiment, by setting up multiple structures such as the ejection cover lifting mechanism 8, the cable separation test component 7, the handle detection component 4, the legging detection component 5 and the lock bullet detection component 6, independent tests can be carried out to obtain the first pull-out force, the second pull-out force, the third pull-out force and the fourth pull-out force. At this time, the data is collected when the seat is in a static state; dynamic combined testing can also be carried out, that is, under the condition that the ejection seat has a certain speed or a certain acceleration, the first dynamic pull-out force, the second dynamic pull-out force and the third dynamic pull-out force are obtained.

[0049] Furthermore, a rotating cross arm 3 is provided on the second mounting cabinet 2, and the rotating cross arm 3 is rotatably mounted in the cabinet. When the rotating cross arm 3 rotates, the rotating cross arm 3 drives the handle detection assembly 4 to move closer to or away from the guide rail 101. The rotating cross arm 3 is provided on the upper part of the second mounting cabinet 2, and its main components are a servo motor, a servo reducer, a shaft assembly, etc. The shaft assembly adopts a structure directly connected to a planetary reducer to avoid excessive virtual rotation gap. During the first pull-off force test, the pulling point can be adjusted by adjusting the rotation angle of the rotating cross arm 3, and then the direction of the pulling force can be adjusted.

[0050] See Figure 3 and Figure 4The handle detection assembly 4 includes a first electric pull rod 41, a first force sensor 42, a first steel cable 43, and a clamp 44. The mounting portion of the first electric pull rod 41 is mounted on the rotating end of the rotating cross arm 3, and the output end of the first electric pull rod 41 is arranged on the free end side of the rotating cross arm 3. The output direction of the first electric pull rod 41 is arranged along the length direction of the rotating cross arm 3. A guide roller and an anti-slip guide plate are provided on the rotating cross arm 3, wherein the guide roller is used to guide the first steel cable 43, and the anti-slip guide plate is provided on the outside of the guide roller to prevent the first steel cable 43 from detaching from the guide roller. One end of the first steel cable 43 is fixedly connected to the output end of the first electric pull rod 41, and the middle part of the first steel cable 43 is reversed by the guide roller. The other end of the first steel cable 43 is sequentially connected to the first force sensor 42 and the clamp 44, and the clamp 44 is used to connect to the handle. The handle detection assembly 4 is used to detect the first pull-out force, and has the following characteristics: the handle detection assembly 4 is installed inside the rotating cross arm 3, and the first steel cable 43 and the clamp 44 can be built into the rotating cross arm 3 by the contraction of the first electric pull rod 41, and can be stored in the second installation cabinet 2 by the rotation of the rotating cross arm 3 to avoid collision when performing other test items; in addition, the test conditions of the first pull-out force can be changed by the rotation of the rotating cross arm 3, for example: the direction of the first pull-out force is changed by changing the rotation position of the rotating cross arm 3, and a dynamic tensile test result is obtained by the rotation of the rotating cross arm 3 during the force measurement process, thereby making the test conditions closer to reality.

[0051] See Figure 3 、 Figure 5-6 The leggings detection assembly 5 includes a second electric pull rod 51, a second steel cable 53, a second force sensor 52 and a leggings simulation piece 54. A second mounting bracket 55 is installed in the second mounting cabinet 2. A second reversing slot 551 is pre-opened on the second mounting bracket 55. The second reversing slot 551 is used for the second steel cable 53 to slide and reverse. The second electric pull rod 51 is installed in the second mounting cabinet 2. In this embodiment, the second electric pull rod 51 is vertically arranged with the output shaft facing upward. One end of the second steel cable 53 is fixedly connected to the second electric pull rod 51. The other end of the second steel cable 53 is connected to the second force sensor 52 and then fixedly connected to the leggings simulation piece 54. The leggings simulation piece 54 is used to connect to the leggings to simulate the legs.

[0052] The second force sensor 52 is connected to the second steel cable 53 on both sides using a dedicated quick-connect clamp 44. The entire legging detection assembly 5 is sealed inside the device housing, and a hole is opened at the tension point of the second steel cable 53. When in use, the second force sensor 52 can be connected at the opening.

[0053] See Figure 3 、 Figure 5-6, the lock bullet detection assembly 6 includes a third electric pull rod 61, a third steel cable 63, a third force sensor 62 and a connecting lock 64. A third mounting bracket 65 is installed in the second mounting cabinet 2, and a third reversing slide 651 is pre-opened on the third mounting bracket 65. The third reversing slide 651 is used for the third steel cable 63 to slide and reverse. The third electric pull rod 61 is installed in the second mounting cabinet 2. In this embodiment, the lock bullet detection assembly 6 is specifically installed between the two second electric pull rods 51. The third electric pull rod 61 is vertically arranged, and the output ends of the two electric pull rods are arranged downward. One end of the third steel cable 63 is fixedly connected to the output end of the third electric pull rod 61, and the other end of the third steel cable 63 is connected to the third force sensor 62 and then fixedly connected to the connecting lock 64. The connecting lock 64 is used to connect the lock bullet.

[0054] The third force sensor 62 can be connected to the third steel cable 63 on both sides using a dedicated quick-connect clamp 44. The overall stretching mechanism is sealed inside the device housing, and a hole is opened at the tension point of the third steel cable 63. When in use, the third tension sensor can be connected at the opening. Since the position of the lock and bullet detection component 6 is close to the position of the legging detection component 5, the internal space of the second installation cabinet 2 can be reasonably utilized to reduce the overall volume. For example, in this embodiment, the height of the leg simulation part is higher than the height of the connecting lock 64, the output shaft of the second electric pull rod 51 and the output shaft of the third electric pull rod 61 are arranged in reverse parallel, and the fixed end of the second electric pull rod 51 is arranged at the lower part of the second installation cabinet 2, and the fixed end of the third electric pull rod 61 is above the fixed end of the second electric pull rod 51.

[0055] See Figure 7 The lid-throwing and lifting mechanism 8 is installed in the first installation cabinet 1. The lid-throwing and lifting mechanism 8 includes a simulated cabin exit power assembly and a crossbeam assembly. The simulated cabin exit power assembly is used to drive the crossbeam assembly to slide along the sliding direction of the guide rail 101. The cabin exit power assembly includes a driving screw 81, a slider 811, a guide plate 82 and a driving power source 83. The axial direction of the driving screw 81 is parallel to the length direction of the guide rail 101 and is rotatably installed in the first installation cabinet 1. The slider 811 is threadedly connected to the driving screw 81, the guide plate 82 is slidably connected to the guide rail 101, and the guide plate 82 is fixedly connected to the slider 811. The driving power source 83 drives the driving screw 81 to rotate and drives the guide plate 82 to slide through the slider 811.

[0056] See Figure 8The crossbeam assembly is arranged above the simulated extravehicular power assembly, and the crossbeam assembly includes a support frame 84 and an adjustment crossbeam 85. The support frame 84 is fixedly connected to the guide plate 82, and the middle part of the adjustment crossbeam 85 is rotatably connected to the support frame 84. The two ends of the adjustment crossbeam 85 are arranged on both sides of the guide rail 101. Both ends of the adjustment crossbeam 85 are provided with seat hooks 86, and the seat hooks 86 are used to connect the ejection seat. An adjustment steel cable 87 is connected between the seat hook 86 and the adjustment crossbeam 85, and the length of the adjustment steel cable 87 is adjustable.

[0057] See Figure 9 The cable separation test assembly 7 is mounted at the bottom of the first mounting cabinet 1. The cable separation test assembly 7 includes a fourth electric pull rod 71, two fourth steel cables 73, two fourth force sensors 72, a cable hook 74, and a release connector hook 75. In this embodiment, the two fourth force sensors 72 share a single electric pull rod. The fourth electric pull rod 71 is mounted below the guide rail 101. One end of the fourth steel cable 73 is fixedly connected to the fourth electric pull rod 71. The other end of the fourth steel cable 73 is connected to the fourth force sensor 72 and then fixedly connected to the cable hook 74 or the release connector hook 75. The cable hook 74 is used to connect the quick-connect cable, and the release connector hook is used to connect the release connector. Considering that the ejection seat slides along the guide rail 101 during ejection, the relative positions of the quick-connect cable and the release connector do not change. In this embodiment, only one fourth electric pull rod 71 is provided to measure both forces. In addition, a fourth mounting bracket 76 is provided at the bottom of the first mounting cabinet 1 . The fourth mounting bracket 76 is provided with two fourth reversing slides 761 , each corresponding to a fourth steel cable 73 . The fourth reversing slides 761 are used for sliding and reversing of the fourth steel cable 73 .

[0058] To achieve the second purpose of the present invention, the present invention provides the following technical solutions:

[0059] An ejection seat test control system is applied to the ejection seat test device as described above, and the ejection seat test control system includes

[0060] A static test control module generates a static signal to the ejection cover lifting mechanism to keep the ejection seat stationary, and sequentially controls the cable separation test assembly 7, the handle detection assembly 4, the legging detection assembly 5, and the bullet lock detection assembly 6 according to the test sequence to measure the fourth static pull-out force, the first static pull-out force, the second static pull-out force, and the third static pull-out force, respectively;

[0061] A dynamic test control module is configured with a plurality of simulation speeds. The dynamic test control module controls the ejection cover lifting mechanism 8 to drive the ejection seat to slide along the guide rail 101 at different simulation speeds, so as to obtain the second dynamic pull-out force, the third dynamic pull-out force, and the fourth dynamic pull-out force by synchronously detecting the legging detection component 5, the bullet lock detection component 6, and the cable separation test component 7 at different simulation speeds;

[0062] a pull-off force estimation module, wherein the pull-off force estimation module obtains a second static pull-off force, a third static pull-off force, and a fourth static pull-off force, as well as a plurality of second dynamic pull-off forces, a fourth dynamic pull-off force, and a fourth dynamic pull-off force;

[0063] The second static pull-off force, the third static pull-off force, the fourth static pull-off force, the second dynamic pull-off force, the fourth dynamic pull-off force and the fourth dynamic pull-off force are respectively fitted with the simulation speed to obtain the second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve.

[0064] estimating a second predicted pull-off force, a third predicted pull-off force, and a fourth predicted pull-off force at a target ejection velocity according to the second dynamic pull-off curve, the third dynamic pull-off curve, and the fourth dynamic pull-off curve;

[0065] The second predicted pull-off force, the third predicted pull-off force and the fourth predicted pull-off force are respectively compared with the preset second pull-off threshold, the third pull-off threshold and the fourth pull-off threshold. If the second predicted dynamic pull-off force is greater than or equal to the preset second pull-off threshold, it indicates that the leggings pull-off force is qualified; if the third predicted dynamic pull-off force is greater than or equal to the preset third pull-off threshold, it indicates that the lock spring pull-off force is qualified; if the fourth predicted pull-off force is less than or equal to the preset fourth pull-off force threshold, it indicates that the cable and separation joint pull-off force are qualified.

[0066] The dynamic test control module is configured with a simulation speed correction strategy, which includes obtaining the generated second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve, respectively obtaining the first reference point and the second reference point on the second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve, sorting the preset simulation speeds to obtain the first simulation speed value and the second simulation speed value, the first simulation speed value is specifically the maximum value in the simulation speed, the second simulation speed value is specifically the second largest value in the simulation speed, the first reference point is specifically the point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve corresponding to the first simulation speed value, and the second reference point is specifically the point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve corresponding to the first simulation speed value. The reference point is specifically a point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve corresponding to the second simulation speed value, and the slope difference at the first reference point and the second reference point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve is calculated respectively. If each slope difference is less than or equal to the corresponding preset slope difference, it indicates that the simulation speed is appropriate. If there is a slope difference greater than the corresponding preset slope difference, a supplementary simulation speed value is generated as the newly supplemented simulation speed, and the supplementary simulation speed value is greater than the first simulation speed value. The dynamic simulation test, pull-off force estimation, and simulation speed correction strategy are repeated until each slope difference is less than or equal to the corresponding preset slope difference.

[0067] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. An ejection seat testing device, characterized in that: The test bench comprises a first mounting cabinet (1) and a second mounting cabinet (2), wherein the first mounting cabinet (1) and the second mounting cabinet (2) are arranged relative to each other, and a guide rail (101) is obliquely mounted on the first mounting cabinet (1), and the guide rail (101) is used for sliding of an ejection seat. The first installation cabinet (1) is provided with a cover lifting mechanism (8) and a cable separation test assembly (7), wherein the cable separation test assembly (7) is used to detect a fourth pulling force when the cable and the separation connector are separated. The second installation cabinet (2) is provided with a handle detection component (4), a leggings detection component (5) and a lock bullet detection component (6), wherein the handle detection component (4) is used to detect a first pulling-out force when the handle is separated from the socket, the leggings detection component (5) is used to detect a second pulling-out force when the leggings are separated, and the lock bullet detection component (6) is used to detect a third pulling-out force when the lock bullet is separated. When the ejection seat is driven to slide along the guide rail (101) by the ejection cover lifting mechanism (8) at different moving speeds, the cable separation test assembly (7), the legging detection assembly (5) and the bullet lock detection assembly (6) operate synchronously; The second installation cabinet (2) is provided with a rotating cross arm (3), and the rotating cross arm (3) is rotatably installed in the cabinet. When the rotating cross arm (3) rotates, the rotating cross arm (3) drives the handle detection component (4) to approach or move away from the guide rail (101); The handle detection assembly (4) includes a first electric pull rod (41), a first force sensor (42), a first steel cable (43) and a clamp (44), wherein the mounting portion of the first electric pull rod (41) is mounted on the rotating end of the rotating cross arm (3), the output end of the first electric pull rod (41) is arranged at the free end of the rotating cross arm (3), the output direction of the first electric pull rod (41) is arranged along the length direction of the rotating cross arm (3), one end of the first steel cable (43) is fixedly connected to the output end of the first electric pull rod (41), the other end of the first steel cable (43) is connected to the first force sensor (42) and the clamp (44) in sequence, and the clamp (44) is used to be connected to the handle; The lock bullet detection component (6) includes a third electric pull rod (61), a third steel cable (63), a third force sensor (62) and a connecting lock (64), wherein the third electric pull rod (61) is installed in the second installation cabinet (2), one end of the third steel cable (63) is fixedly connected to the third electric pull rod (61), and the other end of the third steel cable (63) is connected to the third force sensor (62) and then fixedly connected to the connecting lock (64), and the connecting lock (64) is used to connect the lock bullet, and a third reversing slide groove (651) is provided in the second installation cabinet (2), and the third reversing slide groove (651) is used for the third steel cable (63) to slide and revers. The lid ejection and lifting mechanism (8) comprises a simulated cabin exit power assembly and a crossbeam assembly, wherein the simulated cabin exit power assembly is used to drive the crossbeam assembly to slide along the sliding direction of the guide rail (101), and the cabin exit power assembly comprises A driving screw (81), wherein the axial direction of the driving screw (81) is parallel to the length direction of the guide rail (101) and the driving screw (81) is rotatably installed in the first installation cabinet (1), A slider (811), wherein the slider (811) is threadedly connected to the driving screw (81), A guide plate (82), wherein the guide plate (82) is slidably connected to the guide rail (101), and the guide plate (82) is fixedly connected to the slider (811). A driving power source (83), wherein the driving power source (83) drives the driving screw (81) to rotate and drives the guide plate (82) to slide via a slider (811); The cable separation test assembly (7) includes a fourth electric pull rod (71), two fourth steel cables (73), two fourth force sensors (72), a cable hook (74) and a separation joint hook (75), wherein the fourth electric pull rod (71) is installed below the guide rail (101), one end of the fourth steel cable (73) is fixedly connected to the fourth electric pull rod (71), and the other end of the fourth steel cable (73) is connected to the fourth force sensor (72) and then fixedly connected to the cable hook (74) or the separation joint hook (75), and a fourth reversing slide groove (761) is provided on the test bench, and the fourth reversing slide groove (761) is used for the fourth steel cable (73) to slide and reverse.

2. The ejection seat testing device according to claim 1, characterized in that: The leggings detection assembly (5) includes a second electric pull rod (51), a second steel cable (53), a second force sensor (52) and a leggings simulation component (54). The second electric pull rod (51) is installed in the second installation cabinet (2). One end of the second steel cable (53) is fixedly connected to the second electric pull rod (51). The other end of the second steel cable (53) is connected to the second force sensor (52) and then fixedly connected to the leggings simulation component (54). The leggings simulation component (54) is used to be connected to the leggings to simulate the legs. A second reversing slide (551) is provided in the second installation cabinet (2). The second reversing slide (551) allows the second steel cable (53) to slide and reverse.

3. The ejection seat testing device according to claim 1, wherein: The crossbeam assembly is arranged above the simulated exit power assembly, and the crossbeam assembly includes a support frame (84) and an adjustment crossbeam (85). The support frame (84) and the guide plate (82) are fixedly connected, and the middle part of the adjustment crossbeam (85) is rotatably connected to the support frame (84). The two ends of the adjustment crossbeam (85) are arranged on both sides of the guide rail (101). Both ends of the adjustment crossbeam (85) are provided with seat hooks (86), and the seat hooks (86) are used to connect the ejection seat. An adjustment steel cable (87) is connected between the seat hook (86) and the adjustment crossbeam (85), and the length of the adjustment steel cable (87) is adjustable.

4. An ejection seat test control system, applied to the ejection seat test device according to any one of claims 1 to 3, characterized in that: The ejection seat test control system includes A static test control module, wherein the static test control module generates a static signal to the ejection cover lifting mechanism to keep the ejection seat stationary, and sequentially controls the cable separation test assembly (7), the handle detection assembly (4), the legging detection assembly (5) and the bullet lock detection assembly (6) according to a test sequence to respectively measure the fourth static pull-out force, the first static pull-out force, the second static pull-out force and the third static pull-out force; A dynamic test control module, wherein the dynamic test control module is configured with a plurality of simulation speeds, and the dynamic test control module controls the ejection cover lifting mechanism (8) to drive the ejection seat to slide along the guide rail (101) at different simulation speeds, so as to obtain a second dynamic pull-out force, a third dynamic pull-out force and a fourth dynamic pull-out force by synchronous detection of the legging detection component (5), the bullet lock detection component (6) and the cable separation test component (7) at different simulation speeds; a pull-off force estimation module, wherein the pull-off force estimation module obtains a second static pull-off force, a third static pull-off force, and a fourth static pull-off force, and a plurality of second dynamic pull-off forces, a third dynamic pull-off force, and a fourth dynamic pull-off force, The second static pull-off force, the third static pull-off force, the fourth static pull-off force, the second dynamic pull-off force, the fourth dynamic pull-off force and the fourth dynamic pull-off force are respectively fitted with the simulation speed to obtain the second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve. estimating a second predicted pull-off force, a third predicted pull-off force, and a fourth predicted pull-off force at a target ejection velocity according to the second dynamic pull-off curve, the third dynamic pull-off curve, and the fourth dynamic pull-off curve; The second predicted pull-off force, the third predicted pull-off force and the fourth predicted pull-off force are respectively compared with the preset second pull-off threshold, the third pull-off threshold and the fourth pull-off threshold. If the second predicted pull-off force is greater than or equal to the preset second pull-off threshold, it indicates that the pull-off force of the leggings is qualified; if the third predicted pull-off force is greater than or equal to the preset third pull-off threshold, it indicates that the pull-off force of the lock bullet is qualified; if the fourth predicted pull-off force is less than or equal to the preset fourth pull-off force threshold, it indicates that the pull-off force of the cable and the separation joint is qualified.

5. The ejection seat test control system according to claim 4, characterized in that: The dynamic test control module is configured with a simulation speed correction strategy, which includes obtaining the generated second dynamic pull-off curve, third dynamic pull-off curve and fourth dynamic pull-off curve, respectively obtaining the first reference point and the second reference point on the second dynamic pull-off curve, the third dynamic pull-off curve and the fourth dynamic pull-off curve, sorting the preset simulation speeds to obtain a first simulation speed value and a second simulation speed value, the first simulation speed value is specifically the maximum value among the simulation speeds, the second simulation speed value is specifically the second largest value among the simulation speeds, the first reference point is specifically the value on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve corresponding to the first simulation speed value point, the second reference point is specifically a point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve corresponding to the second simulation speed value, and the slope differences at the positions of the first reference point and the second reference point on the second dynamic pull-off curve, the third dynamic pull-off curve or the fourth dynamic pull-off curve are calculated respectively. If each slope difference is less than or equal to the corresponding preset slope difference, it indicates that the simulation speed is appropriate. If there is a slope difference greater than the corresponding preset slope difference, a supplementary simulation speed value is generated as a newly supplemented simulation speed, and the supplementary simulation speed value is greater than the first simulation speed value. The dynamic simulation test, pull-off force estimation, and simulation speed correction strategy are repeated until each slope difference is less than or equal to the corresponding preset slope difference.

Images