An aircraft seat component performance testing device

Abstract

This invention relates to the field of aircraft seat performance testing technology, specifically proposing an aircraft seat component performance testing device. The device includes: a testing platform; a buckle clamp disposed on the testing platform and including multiple fixed positions; a lifting frame; a tilting frame horizontally rotatably mounted on the lifting frame; multiple pulling mechanisms fixed on the tilting frame and correspondingly cooperating with the multiple fixed positions; each pulling mechanism includes a tension sensor and a latch clamp hinged to one end of the tension sensor for fixing the latch, with a switching element providing locking or unlocking state switching between the tension sensor and the latch clamp; a insertion / extraction actuator horizontally slidably mounted on the lifting frame; and an unlocking mechanism assembled on the insertion / extraction actuator for simultaneously unlocking multiple buckles. The testing device provided by this invention has multiple performance testing functions for seat belt locks, improving the device's comprehensiveness, applicability, and integration, reducing equipment cost, and offering greater operational flexibility during testing.

Description

Technical Field

[0001] This invention relates to the field of aircraft seat performance testing technology, and specifically proposes an aircraft seat component performance testing device. Background Technology

[0002] Aircraft seat components are the structural elements that make up an aircraft seat. Among them, the seat belt is a key component that ensures passenger safety. The seat belt consists of webbing and locking mechanisms. The locking mechanism, which consists of a buckle and a latch, is the key component that determines the safety of the seat belt. The buckle has a spring-loaded locking structure that automatically locks the latch when it is inserted into the buckle. Compared to seat belt locking mechanisms used in vehicles, seat belt locking mechanisms in aircraft seats need to meet more stringent safety and reliability requirements, especially the locking reliability of the locking mechanism. Seat belt locking mechanisms that meet the requirements can ensure safety to the greatest extent in normal use and in emergency situations (such as aircraft turbulence, emergency landing, collision, etc.) and reduce the risk of injury.

[0003] After the seat belt locks are manufactured, it is necessary to conduct various performance tests to verify whether the locks meet the corresponding safety and quality standards. Actual performance testing can be divided into mechanical performance testing, material performance testing, and environmental adaptability testing. Mechanical performance testing can be further divided into frequent insertion and removal fatigue testing, multi-angle static tensile testing, and dynamic impact testing. Under current technology, corresponding performance testing equipment is usually designed for different tests. However, the existing testing equipment has a single testing function, cannot be replaced or switched, and has poor flexibility. This results in more equipment and cost investment to complete the system testing, which will also increase the space occupied by the equipment and increase the trouble of daily management and maintenance of the equipment. Summary of the Invention

[0004] To address the aforementioned problems, the present invention provides an aircraft seat component performance testing device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention employs the following technical solution: an aircraft seat component performance testing device for testing the insertion, removal, and tension of seat belt buckles, comprising: a testing platform; a buckle clamp disposed on the testing platform and including multiple fixing positions for synchronously fixing the buckle; a lifting frame, vertically driven and slidably mounted on the testing platform; a tilting frame, horizontally rotatably mounted on the lifting frame; and multiple pulling mechanisms fixed on the tilting frame and correspondingly cooperating with the multiple fixing positions; each pulling mechanism includes a tension sensor and a latch clamp hinged to one end of the tension sensor for fixing the latch, wherein the tension sensor and the latch clamp... The system includes a switching element that allows for switching between locked and unlocked states. When locked, the tension sensor and the latch cannot rotate relative to each other, switching to the insertion / removal detection mode. When unlocked, the latch can rotate hingedly, switching to the tension detection mode. The tilting frame adjusts the tension angle of multiple pulling mechanisms synchronously by tilting. The insertion / removal actuator is horizontally slidably mounted on the lifting frame and can be slidably inserted into multiple pulling mechanisms. In the insertion / removal detection mode, as the insertion / removal actuator moves up and down with the lifting mechanism, it drives the latch to insert into or remove the latch relative to the lock at the top of the tension sensor. An unlocking mechanism is mounted on the insertion / removal actuator for synchronously unlocking multiple latches.

[0006] Preferably, the pulling mechanism further includes a traction assembly fixed on the flipping frame; a connecting seat and a hinge seat are fixed on the force-bearing ends on both sides of the force sensor; the connecting seat is fixed to the traction end of the traction assembly, and the insertion / extraction actuator can be horizontally inserted into the connecting seat; the hinge seat is hinged to the locking tongue clamp, and the switching component is assembled on the hinge seat.

[0007] Preferably, the lifting frame includes two horizontally opposite lifting side plates that are vertically slidably mounted on the testing platform, and a connecting plate is fixed between the two lifting side plates; the tilting frame is horizontally rotatably mounted between the two lifting side plates; and the insertion / removal actuator is slidably mounted on the connecting plate.

[0008] Preferably, the insertion and extraction actuator includes a transverse frame slidably mounted on the connecting plate and multiple horizontally arranged insertion plates fixed on the transverse frame, with each insertion plate corresponding to a multiple extraction mechanism; the connecting seat is provided with a transverse insertion hole for horizontal insertion of the insertion plates.

[0009] Preferably, the hinge seat is provided with a guide sleeve, and a switching hole is provided through the side wall of the guide sleeve; the switching element is slidably installed in the guide sleeve along the force direction of the tension sensor; a positioning pin is fixed on the switching element and extends into the switching hole, the switching hole including two arc holes distributed along the axial direction of the guide sleeve and an axial hole connecting the two arc holes; the locking tongue clamp is provided with a positioning hole for the switching element to move and insert along the axial direction of the guide sleeve.

[0010] Preferably, the unlocking mechanism includes a drive unit that is slidably mounted on the detection table along the sliding direction of the transverse frame. The drive end of the drive unit is fixed with a pressing base plate that slides vertically with the transverse frame. The bottom end of the pressing base plate is fixed with a plurality of pressing plates that correspond to a plurality of fixed positions. The pressing plates are used to unlock the latch by pressing.

[0011] Preferably, the locking clamp includes multiple positioning blocks that are fixed on the test table surface along a straight line, and the multiple positioning blocks are jointly provided with a locking assembly; the locking assembly includes multiple locking heads that are horizontally slidably installed in the multiple positioning blocks in a one-to-one correspondence; the positioning blocks and the corresponding locking heads together form a fixing position for clamping and fixing the lock.

[0012] Preferably, the latch clamp includes a hinge joint that is hinged to the hinge seat, a fixed clamping plate is fixed on the hinge joint, a sliding clamping plate is slidably installed on the fixed clamping plate, and the latch is clamped between the fixed clamping plate and the sliding clamping plate; a positioning hole is formed on the hinge joint.

[0013] Preferably, each of the two lifting side plates has an annular groove fixed on its opposite surface, which is coaxially arranged with the rotating shaft of the tilting frame; the tilting frame is provided with two moving rods that move along the two annular grooves respectively.

[0014] The above technical solution has the following advantages or beneficial effects: This invention provides an aircraft seat component performance testing device, which is equipped with a buckle clamp for synchronously clamping and fixing multiple buckles, and is equipped with multiple pulling mechanisms. The pulling mechanism is equipped with a buckle clamp for clamping and fixing the locking tongue, thereby forming multiple independent testing stations that make up the same batch of testing. The pulling mechanism is equipped with a switching structure that can realize insertion and removal testing and tensile testing, which can realize automated frequent insertion and removal testing, and can also realize static tensile testing under various tensile angles. The switching operation is simple and fast. The testing device has multiple performance testing functions for seat belt locks, which improves the comprehensiveness, applicability and integration of the device, reduces equipment cost investment, reduces equipment space occupation, has higher operational flexibility during testing, and is also convenient for daily management and maintenance. Attached Figure Description

[0015] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0016] Figure 1 This is a three-dimensional structural diagram of an aircraft seat component performance testing device provided by the present invention.

[0017] Figure 2This is a three-dimensional structural diagram of an aircraft seat component performance testing device provided by the present invention from another perspective.

[0018] Figure 3 This is a front view of an aircraft seat component performance testing device provided by the present invention.

[0019] Figure 4 This is a rear view of an aircraft seat component performance testing device provided by the present invention.

[0020] Figure 5 It is a diagram showing the relative positions of the lifting frame, the insertion and removal actuators, the unlocking mechanism assembly structure, and the locking clamps.

[0021] Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0022] Figure 7 This is a schematic diagram of a single pull-out mechanism in the insertion / removal detection state.

[0023] Figure 8 It is an assembly structure diagram of the connecting seat, tension sensor, hinge seat, locking tongue clamp and switching component.

[0024] Figure 9 It is a three-dimensional sectional view of the assembly of the hinge seat, locking tongue clamp and switching component.

[0025] Figure 10 This is a schematic diagram of the clamping state of a single latch in the latch fixture.

[0026] Figure 11 This is a 3D structural diagram of the positioning block.

[0027] In the diagram: 1. Testing table; 11. Guide frame; 2. Locking clamp; 21. Positioning block; 211. Guide groove; 212. Slot; 22. Locking clamp assembly; 221. Sliding seat; 222. Locking clamp head; 3. Lifting frame; 31. Lifting side plate; 311. Annular groove; 32. Connecting plate; 4. Tilting frame; 41. Tilting arm; 411. Moving rod; 42. Top plate; 5. Pulling mechanism; 51. Hydraulic cylinder; 52. Elastic telescopic rod; 521. Telescopic rod assembly; 522. Tension spring; 53. Connecting seat; 531. Horizontal insertion hole; 54. Tension sensor; 55. Hinge seat 551. Guide sleeve; 552. Switching hole; 56. Lock tongue clamp; 561. Hinge joint; 562. Fixed clamping plate; 563. Sliding clamping plate; 564. Screw; 565. Positioning hole; 566. Insertion block; 57. Switching component; 571. Positioning pin; 6. Insertion and extraction actuator; 61. Horizontal movement frame; 611. U-shaped rod; 612. Insertion plate seat plate; 62. Insertion plate; 7. Unlocking mechanism; 71. Drive unit; 72. Pressing base plate; 73. Pressing plate; 731. Contact block; 8. Lock; 81. Locking buckle; 811. Fixing part; 812. Unlocking key; 82. Lock tongue. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 10 and Figure 11A performance testing device for aircraft seat components is disclosed, used for inserting, removing, and tensile testing of seat belt locks 8. The testing device includes a testing platform 1; a lock clamp 2 for clamping and fixing the lock 81 is mounted on the testing platform 1; in this embodiment, the lock clamp 2 includes four positioning blocks 21 evenly distributed along a straight line and fixed to the testing platform 1 by bolts. The positioning blocks 21 are provided with slots 212 for inserting the fixing part 811 of the lock 81, and the internal contour of the slots 212 is adapted to the structure of the fixing part 811. The positioning blocks 21 are also provided with guide grooves 211 that are horizontally connected to the slots 212; a locking assembly 22 is provided between the four positioning blocks 21; the locking assembly 22 includes a sliding mechanism that is horizontally slidably mounted on the testing platform 1. The movable seat 221 and the test table 1 can be horizontally fixedly installed with a hydraulic cylinder (not shown in the figure), and the sliding seat 221 is fixed at the output end of the hydraulic cylinder. The sliding seat 221 is driven to slide by the hydraulic cylinder. Four locking heads 222 are welded on the sliding seat 221. The four locking heads 222 are correspondingly engaged with four positioning blocks 21. The locking heads 222 are horizontally slidably installed in the guide grooves 211 of the corresponding positioning blocks 21. The fixing part 811 of the latch 81 is provided with bolt holes. The locking head 222 includes a pin part that is inserted into the bolt hole of the fixing part 811 and a side clamping part for laterally clamping the fixing part 811 in the slot 212. The positioning blocks 21 and the corresponding locking heads 222 together constitute a fixing position for clamping and fixing the latch 81, for a total of four fixing positions.

[0031] The locks 8 used for testing can be randomly selected from the produced lock products 8. Each lock 8 to be tested can be labeled with information such as the production batch and numbered so that the product can be traced after testing. In order to ensure a certain sample testing volume and minimize the random error of the test results to reflect the overall performance quality of all locks 8, in this invention, the testing device uses four locks as a group for batch testing. If it is necessary to increase the total number of test samples according to the requirements of the test, multi-group batch testing can be selected.

[0032] During testing, the latches 81 are individually fixed using the latch clamp 2. Specifically, the fixing part 811 of the latch 81 is inserted into the slot 212 of the positioning block 21, so that all four latches 81 are vertically aligned in the positioning block 21. Then, the hydraulic cylinder of the latch assembly 22 is activated, so that each latch head 222 passes through the bolt hole of the fixing part 811 and clamps the fixing part 811 in the slot 212, thereby simultaneously completing the clamping and fixing of the four latches 81.

[0033] See Figure 1 , Figure 2 , Figure 3 and Figure 5A lifting frame 3 is vertically slidably mounted on the testing table 1; two horizontally arranged guide frames 11 are welded onto the surface of the testing table 1; the lifting frame 3 includes two horizontally arranged lifting side plates 31 that are vertically slidably mounted on the two guide frames 11 in a one-to-one correspondence, and a connecting plate 32 is welded between the two lifting side plates 31; in this embodiment, hydraulic cylinders (not shown in the figure) can also be vertically fixed on the two guide frames 11 by bolts, and the lifting side plates 31 are fixed to the hydraulic cylinders on the same side by bolts, and the two hydraulic cylinders move synchronously when working.

[0034] See Figure 1 , Figure 2 and Figure 5 A tilting frame 4 is assembled between the two lifting side plates 31. The tilting frame 4 includes two tilting arms 41 that are horizontally rotatably mounted on the two lifting side plates 31 through a rotating shaft. A top plate 42 is welded between the ends of the two tilting arms 41 away from the rotating shaft. In this embodiment, a stepper motor (not shown in the figure) is fixedly mounted on one of the lifting side plates 31 through a motor mounting bracket. The output shaft of the stepper motor is fixedly connected to the rotating shaft of the adjacent tilting arm 41. The stepper motor is used to drive the tilting frame 4 to tilt. It should be noted that the stepper motor is a self-locking motor, or the stepper motor cooperates with an external locking mechanism to achieve self-locking. For example, an electromagnetic brake can be installed to achieve self-locking. The purpose of self-locking is to lock the tilting frame 4 at the corresponding angle. In addition, in order to improve the stability of the tilting frame 4, in this embodiment, annular grooves 311 coaxially arranged with the rotating shaft of the tilting frame 4 are welded on the opposite surfaces of the two lifting side plates 31; and movable rods 411 that move along the same side of the annular grooves 311 are horizontally rotatably mounted on the two tilting arms 41. The cooperation between the movable rods 411 and the annular grooves 311 provides the tilting frame 4 with a fulcrum position other than the rotating shaft.

[0035] See Figure 3 and Figure 7The top plate 42 is equipped with four linearly and evenly distributed pulling mechanisms 5. These four pulling mechanisms 5 are correspondingly matched with four fixed positions. When the tilting frame 4 is in a vertical state, the four pulling mechanisms 5 are distributed one-to-one above the four positioning blocks 21. Each pulling mechanism 5 includes a pulling assembly, a tension sensor 54, and a locking tongue clamp 56 hinged to one end of the tension sensor 54 for fixing the locking tongue 82. The pulling assembly includes a hydraulic cylinder 51 and a spring-loaded telescopic rod 52. The hydraulic cylinder 51... The elastic telescopic rod 52 is bolted to the top plate 42. It includes a telescopic rod assembly 521 and a tension spring 522 sleeved on the telescopic rod assembly 521. The two ends of the tension spring 522 are welded to the two ends of the telescopic rod assembly 521. The tension sensor 54 is an existing column-type tension sensor 54. The two force-bearing ends of the tension sensor 54 are respectively welded with a connecting seat 53 and a hinge seat 55. One end of the telescopic rod assembly 521 is welded to the output end of the hydraulic cylinder 51, and the other end is threaded and fixedly connected to the connecting seat 53.

[0036] See Figure 8 and Figure 9 The locking tongue clamp 56 includes a hinge joint 561 hinged to the hinge seat 55. A fixed clamping plate 562 is welded to the bottom end of the hinge joint 561. A sliding clamping plate 563 is mounted on the fixed clamping plate 562. Two guide pins are welded to the sliding clamping plate 563. The sliding clamping plate 563 slides with the fixed clamping plate 562 through the two guide pins. A screw 564 that is threadedly engaged with the fixed clamping plate 562 is also rotatably mounted on the sliding clamping plate 563. The locking tongue 82 has a rectangular hole for the seat belt to pass through. A rectangular insert 566 that can be inserted into the hole is provided on the clamping surface of the sliding clamping plate 563. The insert 566 is adapted to the size of the hole. When clamping and fixing the locking tongue 82, the locking tongue 82 can be inserted between the fixed clamping plate 562 and the sliding clamping plate 563. By rotating the screw 564, the insert 566 is inserted into the hole, and finally the locking tongue 82 is clamped between the fixed clamping plate 562 and the sliding clamping plate 563.

[0037] See Figure 8 and Figure 9 In this invention, the detection device is used to perform comprehensive performance testing on the lock 8, including insertion / removal and tension testing. During actual testing, switching between the insertion / removal and tension testing modes is required. Therefore, a switching element 57 is provided between the tension sensor 54 and the latch clamp 56 to switch between locked and unlocked states. The hinge seat 55 is provided with a guide sleeve 551, and a switching hole 552 is formed through the side wall of the guide sleeve 551. The switching element 57 is slidably installed in the guide sleeve 551 along the force direction of the tension sensor 54. A positioning pin 571 is welded onto the switching element 57, extending into the switching hole 552. The switching hole 552 includes two arcuate holes distributed along the axial direction of the guide sleeve 551 and an axial hole connecting the two arcuate holes. The specific structure of the switching hole 552 is shown in the figure. Figure 8 and Figure 9 As shown; the hinge joint 561 is provided with a positioning hole 565 for the switching element 57 to be inserted into by moving along the axial direction of the guide sleeve 551.

[0038] When the switching element 57 is rotated to insert into the positioning hole 565, and the positioning pin 571 is rotated away from the axial hole to the arc hole in the switching hole 552 closer to the hinge joint 561, it is in the locked state. Obviously, when locked, the tension sensor 54 and the locking tongue clamp 56 cannot rotate relative to each other. When the flipping frame 4 is in the vertical state, the pulling mechanism 5 is also in the vertical state, and the clamped locking tongue 82 is directly above the lower latch 81 insertion hole. The force direction of the tension sensor 54 is consistent with the insertion and extraction direction. At this time, the insertion and extraction detection mode can be switched. When the switching element 57 is pulled out from the positioning hole 565, and the positioning pin 571 is rotated away from the axial hole to the arc hole in the switching hole 552 away from the hinge joint 561, it is in the unlocked state. When unlocked, the tension sensor 54 can rotate hingedly between the hinge seat 55 and the locking tongue clamp 56. At this time, switch to the tension detection mode; the flip frame 4 can adjust the tension angle of the four pulling mechanisms 5 synchronously by flipping. When the tension is detected by the pulling mechanism 5, the change of the tension angle of the tension sensor 54 is based on the hinge axis between the hinge seat 55 and the hinge joint 561. In this invention, in order to ensure that the flip angle of the flip frame 4 is basically consistent with the actual tension angle, when the pulling mechanism 5 is in the vertical state and the tension spring 522 is in the natural state, the rotating shaft of the flip frame 4 and the hinge axis of the four hinge seats 55 are in the coaxial state. When the pulling mechanism 5 and the flip frame 4 descend synchronously with the lifting frame 3, the coaxial state of the rotating shaft of the flip frame 4 and the hinge axis of the hinge seat 55 remains unchanged. In addition, when performing tension detection, the locking tongue 82 is first vertically inserted into the locking buckle 81, and then the tension angle is adjusted by the flip frame 4.

[0039] See Figure 1 , Figure 2 , Figure 3 and Figure 4 In order to achieve automatic frequent insertion and removal detection, the lifting frame 3 is equipped with an insertion and removal actuator 6, and an unlocking mechanism 7 is equipped in cooperation with the insertion and removal actuator 6. The insertion and removal actuator 6 is used to perform frequent insertion and removal operations on the four locks 8 individually at the same time. During the insertion and removal operation, before the locking tongue 82 is pulled out from the lock buckle 81, the unlocking mechanism 7 is used to press and unlock the four locks 8 at the same time.

[0040] See Figure 2 , Figure 5 , Figure 7 and Figure 8The insertion and extraction actuator 6 includes a transverse frame 61 and four insertion plates 62. The transverse frame 61 includes a U-shaped rod 611 that is horizontally slidably mounted on the connecting plate 32 and an insertion plate seat plate 612 welded between the two ends of the U-shaped rod 611. The four insertion plates 62 are evenly distributed along the horizontal straight line and are all welded to the same side of the insertion plate seat plate 612. The four insertion plates 62 are correspondingly matched with the four pulling mechanisms 5. The connecting seat 53 is provided with a transverse insertion hole 531 for the insertion plates 62 to be horizontally inserted.

[0041] See Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The unlocking mechanism 7 includes a drive unit 71. In this embodiment, the drive unit 71 is specifically a vertically installed hydraulic cylinder. A sliding base is welded to the bottom end of the hydraulic cylinder. The hydraulic cylinder is slidably installed on the detection table 1 through the sliding base and is slidably arranged in the same direction as the transverse frame 61. A pressing base plate 72 is welded to the output end of the hydraulic cylinder and slides vertically with the insert plate seat plate 612. Four pressing plates 73 corresponding to four fixed positions are welded to the bottom end of the pressing base plate 72. The pressing plates 73 are used to press and unlock the latch 81. A pressing block 731 is glued and fixed to the bottom end of the pressing plate 73 and presses against the unlocking key 812 of the latch 81. The pressing block 731 is made of rubber.

[0042] This invention provides a performance testing device for aircraft seat components, which can perform insertion and removal tests and tension tests on aircraft seat belt locks 8 by switching states respectively; it should be added that the designed locks 8 have corresponding industry-specified performance testing standards, and the actual testing is based on the corresponding standards.

[0043] Perform frequent plug-in / plug-out testing

[0044] Preparation stage: Clamp and fix the four latches 81 in the four positioning blocks 21 in sequence using the latch clamps 2, and clamp and fix the four latches 82 in the four latch clamps 56 in sequence; switch the hinge seat 55 and latch clamps 56 in the pulling mechanism 5 to the locked state using the switching component 57; keep the flip frame 4 in a vertical state, at this time, the latches 82 are vertically aligned with the insertion holes of the latches 81; then, first adjust the height of the lifting frame 3 so that the insertion plate 62 is horizontally aligned with the corresponding horizontal insertion hole 531, then hold the U-shaped rod 611 and push the horizontal moving frame 61 to move horizontally, so that the insertion plate 62 is inserted into the horizontal insertion hole 531, and the unlocking mechanism 7 moves synchronously with the horizontal moving frame 61 until the touch block 731 is directly above the unlocking button 812 of the corresponding latch 81.

[0045] During the testing phase: the lifting frame 3 reciprocates up and down, and the unlocking mechanism 7 responds accordingly; during the descent phase, the lifting frame 3 drives the insertion / removal actuator 6 to descend synchronously, and the pulling mechanism 5, along with the tilting frame 4, also descends synchronously. The insertion plate 62 assists in pushing the locking tongue 82 into the latch 81; before the lifting frame 3 rises, the unlocking mechanism 7 is activated first, and the drive unit 71 drives the pressing base plate 72 to descend, so that the pressing plate 73 presses against the unlocking key 812 through the contact block 731, completing the unlocking of the latch 81 and maintaining the contact state. Subsequently, the lifting frame 3 rises, and the insertion plate 62 indirectly drives the locking tongue 82 to be pulled out of the latch 81 through the pulling mechanism 5. Before descending and inserting again, the unlocking mechanism 7 resets, and the unlocking key 812 returns to the unlocked state; thereafter, the above action process is repeated, and the insertion / removal test is performed according to the standard number of cycles. During the testing process, the tension sensor 54 can directly monitor the resistance when the bolt 82 is inserted into the latch 81 each time it is inserted and removed, and record the force data of the tension sensor 54 in real time during each insertion and removal test. If the resistance value monitored by the tension sensor 54 for each insertion and removal is basically similar within the standard number of cycles, or shows a gradual decreasing trend with the increase of the number of cycles, it indicates that the elasticity of the elastic locking mechanism of the latch 81 is gradually decreasing, but the maximum change value is within the allowable range, indicating that the four locks 8 have passed the frequent insertion and removal test and meet the corresponding quality standard requirements. If the data from the final monitoring feedback shows that the resistance value of a certain lock 8 decreases abnormally during a certain insertion and removal process, it indicates that the insertion and removal of the latch 81 is abnormal at the corresponding number of cycles, and it is necessary to observe whether the elastic locking structure inside the latch 81 has deformed, broken, or the spring force has failed.

[0046] During the insertion and removal test, the lifting frame 3 drives the tilting frame 4 and the pulling mechanism 5 to move up and down synchronously. Although this completes the insertion and removal action, both insertion and removal require the elastic telescopic rod 52 to indirectly store force through the compression spring. During the cyclic insertion and removal test, the frequent storage of force by the compression spring reduces the efficiency of the insertion and removal action, and the spring force may fail due to fatigue cycles. Therefore, an insertion and removal actuator 6 is provided to assist in performing the insertion and removal action. This not only improves the efficiency of the insertion and removal action but also ensures the standardization and stability of the insertion and removal action. In addition, the cooperative assembly design between the unlocking mechanism 7 and the insertion and removal actuator 6 allows for mutual guidance between the pressing base plate 72 and the insertion plate seat plate 612, further enhancing the stability of the insertion and removal actuator 6 during the cyclic insertion and removal test. Furthermore, the unlocking mechanism 7 can move synchronously with the insertion and removal actuator 6, enabling movement and avoidance, which facilitates the clamping and fixing operation of the latch 81.

[0047] Perform multi-angle tensile testing (static tensile testing).

[0048] Preparation phase: While maintaining the insertion and removal detection, insert the locking tongue 82 into the latch 81. Then, first remove the insertion and removal actuator 6 so that the insertion plate 62 is pulled out from the horizontal insertion hole 531. Then, switch the switching element 57 of each pulling mechanism 5 to the unlocked state in sequence.

[0049] Testing Phase: During the testing process, the flipping frame 4 drives the pulling mechanism 5 to flip accordingly, thereby adjusting the tension testing angle. Vertical tension testing is performed at 0°, 45°, and 90° angles. In this embodiment, the above three typical tension angles are used for actual testing, but other tension angles can also be tested in actual operation. The testing is carried out in batches. It should be noted that the testing lock 8 needs to be replaced when testing at different tension angles. When performing vertical tension testing, the pulling mechanism 5 is in a vertical state, and the output end of the hydraulic cylinder 51 retracts at a uniform speed, causing the telescopic rod group 521 to extend synchronously. The tension spring 522 is stretched, and the elastic telescopic rod 52 compensates for the displacement of the hydraulic cylinder 51 during contraction. However, the hydraulic cylinder 51 indirectly transmits the tension to the tension sensor 54 through the elastic telescopic rod 52. The tension sensor 54 pulls the lock tongue 82 through the lock tongue clamp 56. During this process, the hydraulic cylinder 5... The tension sensor 54 acts solely to apply force, acting on the latch 82 via the hinge seat 55 and the latch clamp 56. The direction of force on the tension sensor 54 is consistent with the direction of tension, eliminating the need to consider the change in tension during the transmission of the elastic telescopic rod. The tension measured by the tension sensor 54 can be directly regarded as the real-time tension on the lock 8. When the tension monitored by the tension sensor 54 reaches the specified tension, the hydraulic cylinder 51 stops contracting and remains in this position for several minutes. The condition of each lock 8 is observed to check for breakage, slippage, or locking failure. If none of these phenomena occur, it indicates that the batch of locks 8 has passed the tension test at a 0° tension angle. If any lock 8 falls below the line above, it indicates that the lock 8 has failed the test. Subsequently, the tension angle is adjusted by flipping the frame 4, and the test is repeated using the vertical tension test method. The tension test results at 45° and 90° tension angles are observed and recorded.

[0050] After the testing is completed, the results of the insertion and removal test and the tensile test are analyzed. For locks 8 with abnormal test results, the product is traced according to their serial numbers and other information to find and analyze whether there are any problems in any production process, such as raw material preparation or production process operation. The problems found are rectified. After the rectification is completed, the performance of the produced locks 8 can be tested and verified again to ensure that the locks 8 meet the corresponding safety and quality standards.

[0051] This invention provides a performance testing device for aircraft seat components. It includes a latch clamp 2 for simultaneously clamping and fixing multiple latches 81, and multiple pulling mechanisms 5 in cooperation with it. Each pulling mechanism 5 has a latch clamp 56 for clamping and fixing a latch tongue 82, thus forming multiple independent testing stations that constitute the same batch of tests. The pulling mechanism 5 includes a switching structure for insertion / removal testing and tensile testing, enabling automated frequent insertion / removal testing as well as static tensile testing at various tensile angles. The switching operation is simple and quick. The testing device has multiple performance testing functions for seat belt locks 8, improving the device's comprehensiveness, applicability, and integration, reducing equipment costs, minimizing equipment space requirements, increasing operational flexibility during testing, and facilitating daily management and maintenance.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A performance testing device for aircraft seat components, used for testing the insertion / removal and tensile strength of seat belt locks, characterized in that, include: Testing station; The locking clamp is located on the testing table and includes multiple fixing positions for synchronously fixing the locking clamp; The lifting frame is vertically driven and slidably mounted on the testing platform; The tilting frame is horizontally rotated and installed on the lifting frame; Multiple pulling mechanisms are fixed on the flipping frame and correspond to multiple fixed positions. Each pulling mechanism includes a tension sensor and a latch clamp hinged to one end of the tension sensor for fixing the latch. A switching element is provided between the tension sensor and the latch clamp to switch between locked and unlocked states. When locked, the tension sensor and the latch clamp cannot rotate relative to each other, switching to the insertion and removal detection mode. When unlocked, they can rotate hingedly, switching to the tension detection mode. The flipping frame adjusts the tension angle of the multiple pulling mechanisms synchronously by flipping. The insertion and removal actuator is horizontally slidably mounted on the lifting frame and can be slidably inserted into multiple pulling mechanisms. In the insertion and removal detection mode, when the insertion and removal actuator moves up and down with the lifting mechanism, it drives the locking tongue to be inserted into or removed from the latch at the top of the tension sensor. And an unlocking mechanism, mounted on the plug-in actuator, for simultaneously unlocking multiple locks.

2. The aircraft seat component performance testing device according to claim 1, characterized in that: The pulling mechanism also includes a traction assembly fixed on the flipping frame; a connecting seat and a hinge seat are fixed on the force-bearing ends on both sides of the force sensor; the connecting seat is fixed to the traction end of the traction assembly, and the insertion / extraction actuator can be horizontally inserted into the connecting seat; the hinge seat is hinged to the locking tongue clamp, and the switching component is assembled on the hinge seat.

3. The aircraft seat component performance testing device according to claim 2, characterized in that: The lifting frame includes two horizontally opposite lifting side plates that are vertically slidably mounted on the testing platform, with a connecting plate fixed between the two lifting side plates; a tilting frame is horizontally rotatably mounted between the two lifting side plates; and a plug-in actuator is slidably mounted on the connecting plate.

4. The aircraft seat component performance testing device according to claim 3, characterized in that: The insertion and extraction actuator includes a transverse frame that is slidably mounted on the connecting plate and multiple horizontally arranged insertion plates fixed on the transverse frame. The multiple insertion plates are arranged in a one-to-one correspondence with multiple extraction mechanisms. The connecting seat is provided with a transverse insertion hole for the insertion plates to be inserted horizontally.

5. The aircraft seat component performance testing device according to claim 2, characterized in that: The hinge seat is provided with a guide sleeve, and a switching hole is provided through the side wall of the guide sleeve; the switching component is slidably installed in the guide sleeve along the force direction of the tension sensor; a positioning pin is fixed on the switching component and extends into the switching hole, the switching hole including two arc holes distributed along the axial direction of the guide sleeve and an axial hole connecting the two arc holes; the locking tongue clamp is provided with a positioning hole for the switching component to move and insert along the axial direction of the guide sleeve.

6. The aircraft seat component performance testing device according to claim 4, characterized in that: The unlocking mechanism includes a drive unit that is slidably mounted on the detection table along the sliding direction of the transverse frame. The drive end of the drive unit is fixed with a pressing base plate that slides vertically with the transverse frame. The bottom end of the pressing base plate is fixed with a plurality of pressing plates that correspond to a plurality of fixed positions. The pressing plates are used to unlock the latch by pressing.

7. The aircraft seat component performance testing device according to claim 1, characterized in that: The locking clamp includes multiple positioning blocks that are fixed on the test table surface along a straight line, and the multiple positioning blocks cooperate to form a locking assembly; the locking assembly includes multiple locking heads that are horizontally slidably installed in the multiple positioning blocks in a one-to-one correspondence; the positioning blocks and the corresponding locking heads together form a fixed position for clamping and fixing the lock.

8. The aircraft seat component performance testing device according to claim 5, characterized in that: The locking tongue clamp includes a hinge joint that is hinged to the hinge seat, a fixed clamping plate is fixed on the hinge joint, a sliding clamping plate is slidably installed on the fixed clamping plate, and the locking tongue is clamped between the fixed clamping plate and the sliding clamping plate; a positioning hole is formed on the hinge joint.

9. The aircraft seat component performance testing device according to claim 3, characterized in that: On the opposite surfaces of the two lifting side plates, there are annular grooves that are coaxially arranged with the rotating shaft of the tilting frame; the tilting frame is provided with two moving rods that move along the two annular grooves respectively.

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