A jamming test device

Abstract

This invention relates to a jamming test device, comprising a cylinder having a first end and a second end, an inner cavity disposed axially within the cylinder and having an opening leading to the second end, and a groove formed axially on the cylinder and communicating with the inner cavity; a movable rod movably inserted into the inner cavity of the cylinder through the opening, with a mounting hole provided near the insertion end of the movable rod; a sliding member inserted through the groove and the mounting hole and detachably mounted to the movable rod, such that the sliding member moves together with the movable rod; and a fixing member configured to slide along the groove and be fixed to the cylinder, wherein when the fixing member is fixed to the cylinder, a portion of the fixing member can contact the sliding member to restrict the movement of the sliding member. This jamming test device can achieve bidirectional jamming and is easy to install.

Description

Technical Field

[0001] This invention relates to the field of ground testing for flap and slat jamming failures in civil aircraft, and more specifically to a jamming test device. Background Technology

[0002] As is well known, aircraft wings have flaps and slats. As auxiliary control surfaces of the aircraft, flaps and slats can be deflected according to the actual situation to change the aircraft's angle of attack, thereby helping the aircraft climb or land.

[0003] When using flaps and slats, such as during takeoff or landing, the flaps and slats may experience malfunctions such as jamming. Flap and slat jamming refers to a phenomenon where the movement of a certain link in the flap and slat drive system is obstructed for some reason, causing the flaps and slats to stop deflecting. For example, the flaps and slats may not be able to lower or retract.

[0004] To ensure flight safety, flap and slat jamming failure tests are required during airworthiness testing. These jamming tests verify that the system can detect jamming failures and issue alarm messages when they occur in the flap and slat drive system. This is an important test to verify the safety of high-lift systems in civil aircraft and an indispensable test subject in the airworthiness testing of some high-lift systems.

[0005] However, the existing flap slat jamming test device can only achieve unidirectional jamming, and cannot achieve bidirectional jamming when lowering and retracting. It cannot fully verify the safety of the high-lift system, and the installation and disassembly are time-consuming and inefficient.

[0006] Therefore, it is hoped that existing testing equipment can be innovated to provide a jamming testing device for flaps and slats, so as to eliminate potential problems in the test and standardize the test process. Summary of the Invention

[0007] To overcome the problem that existing jamming test devices cannot achieve bidirectional jamming and thus cannot fully verify the safety of high-lift systems, this invention designs a jamming test device. This jamming test device is installed using existing installation interfaces at the test site, and can achieve jamming in both directions of retracting and extending the control surface, thus meeting test requirements and improving test efficiency.

[0008] Specifically, the jamming test device includes a cylinder having a first end and a second end, an inner cavity axially disposed within the cylinder and having an opening leading to the second end, and a groove axially formed on the cylinder and communicating with the inner cavity; a movable rod movably inserted into the inner cavity of the cylinder through the opening, with a mounting hole near the insertion end of the movable rod; a sliding component inserted through the groove and mounting hole and detachably mounted to the movable rod, allowing the sliding component to move together with the movable rod; and a fixing component configured to slide along the groove and be fixed to the cylinder, wherein when the fixing component is fixed to the cylinder, a portion of the fixing component can contact the sliding component to restrict the movement of the sliding component. The jamming test device can achieve bidirectional jamming and is easy to install.

[0009] In an embodiment of the present invention, the jamming test device further includes a first lug and a second lug, the first lug being fixed at the first end of the cylinder and the second lug being fixed at the other end of the movable rod opposite to the insertion end.

[0010] Preferably, the first lug is integrally formed with the cylinder body to increase strength, and the second lug is a separate component for easy installation; the second lug is detachably mounted on the movable rod.

[0011] Preferably, it also includes a guide belt, which is fixed to the insertion end of the movable rod.

[0012] In an embodiment of the invention, the groove extends through the cylinder body, and the sliding component passes through the groove and is fixed in place by the mounting hole.

[0013] In an embodiment of the present invention, the sliding component includes a sliding bolt, a sliding bolt fixing block, and a nut. The sliding bolt passes through a groove and a mounting hole and is fixed together with the sliding bolt fixing block via the nut.

[0014] In a preferred embodiment, the fixing component includes a fixing block, a sliding block, and a friction plate. The sliding block and the friction plate are connected and clamp the fixing block via connecting screws. The cylinder has fixing holes arranged along the sides of the slide groove. The fixing block is fixed to the cylinder via fixing screws screwed into the fixing holes. The sliding block is slidably disposed in the slide groove and configured to contact the sliding component.

[0015] Furthermore, the fixing block is provided with a first buffer groove along the direction of the sliding groove, wherein after the connecting screw is loosened, the connecting screw slides in the first buffer groove, causing the sliding block and the friction plate to slide.

[0016] Furthermore, the fixing block has a second buffer groove along the direction of the slide groove, wherein the positioning screw passes through the second buffer groove and is fixed into the fixing hole, so that after the fixing screw is removed, the fixing component can slide relative to the positioning screw.

[0017] Advantageously, the jamming test device is made of aluminum to reduce weight.

[0018] Additional features and advantages of the described jamming test apparatus will be set forth in the detailed description below, and will be recognized by those skilled in the art from the following description or from practice of the embodiments described herein, including the detailed description below and the accompanying drawings. Attached Figure Description

[0019] With reference to the above objectives, the technical features of the present invention are clearly described in the following claims, and its advantages will be apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of the invention by way of example, without limiting the scope of the inventive concept.

[0020] Figure 1 A perspective view of a jamming test apparatus according to an embodiment of the present invention is shown;

[0021] Figure 2 It shows Figure 1 A partial exploded view of the jamming test apparatus; and

[0022] Figure 3 It shows Figure 1 A partial cross-sectional view of the jamming test device;

[0023] Figure 4 It shows Figure 1 A schematic diagram of the fixed components of the jamming test device before the sliding components are disassembled;

[0024] Figure 5 It shows Figure 1 A schematic diagram of the fixed component of the jamming test device during the disassembly of the sliding component, showing that the connecting screws have been loosened; and

[0025] Figure 6 It shows Figure 1 A schematic diagram of the fixed component of the jamming test device during the disassembly of the sliding component, in which the fixing screw has been removed from the fixing hole.

[0026] Figure Labels

[0027] 1. Restriction Test Apparatus

[0028] 10 First Ear

[0029] 20 Second ear

[0030] 100 cylinder block

[0031] 110 First End

[0032] 120 Second End

[0033] 130 Inner cavity

[0034] 131 Opening

[0035] 140 groove

[0036] 150 fixing holes

[0037] 160 end cap

[0038] 200 movable bar

[0039] 201 Insertion end

[0040] 202 mounting holes

[0041] 210 guide belt

[0042] 300 sliding parts

[0043] 301 sliding bolt

[0044] 302 Sliding Bolt Fixing Block

[0045] 303 Nut

[0046] 400 Fixed parts

[0047] 410 Fixing Block

[0048] 411 First Buffer Slide

[0049] 412 Second Buffer Slide

[0050] 420 sliding block

[0051] 430 friction plate

[0052] 440 fixing screw

[0053] 450 connecting screws

[0054] 460 positioning screw Detailed Implementation

[0055] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention.

[0056] As used in this article, the term "axial" refers to the direction defined along the length of the cylinder block, and specifically along... Figure 1 The horizontal length direction of the cylinder block.

[0057] For clarity, only some of the same elements in the accompanying drawings are labeled. However, it should be understood that the unlabeled elements have the same function as the labeled elements, and the only difference is that they are symmetrical in position in the drawing.

[0058] Figure 1 A jamming test device 1 according to an embodiment of the present invention is shown. The jamming test device 1 can be made of aluminum to reduce weight and simplify installation. The jamming test device 1 mainly includes a cylinder 100, a movable rod 200, a sliding component 300, and a fixed component 400.

[0059] Reference Figure 1 The cylinder body 100 has a first end 110 and a second end 120. A first lug 10 is fixed at the first end 110 of the cylinder body 100. Preferably, to increase strength, the first lug 10 is integrally formed with the cylinder body 100.

[0060] Reference Figure 3 The cylinder body 100 has an inner cavity 130, which is disposed in the cylinder body 100 in the axial direction and has an opening 131 leading to the second end.

[0061] Return to reference Figure 1 The cylinder body 100 has a groove 140, which is formed on the cylinder body 100 in the axial direction and communicates with the inner cavity 130. In this embodiment, the groove 140 extends through the cylinder body 100.

[0062] Specific reference Figure 2 The movable rod 200 is movably inserted into the inner cavity 130 of the cylinder 100 through the opening 131. A mounting hole 202 is provided near the insertion end 201 of the movable rod 200. Preferably, the jamming test device 1 further includes a guide band 210, which is fixed to the insertion end 201 of the movable rod 200. For example, the guide band 210 and the insertion end 201 have pin holes, allowing them to be fixed together by inserting a pin to prevent axial movement of the guide band 210. The cross-section of the guide band 210 in the axial direction has a shape that matches the cross-sectional shape of the inner cavity 130 in the axial direction. For example, the cross-section of the inner cavity 130 is circular, while the cross-section of the guide band 210 can be a circle with the same or slightly smaller diameter as the cross-section of the inner cavity 130.

[0063] After the movable rod 200 is inserted into the inner cavity 130 of the cylinder body 100, the cylinder end cap 160 can be installed so that the movable rod 200 does not detach from the cylinder body 100. The cylinder end cap 160 is installed into the opening 131 at the second end 120 of the cylinder body 100 to close the opening 131, and can be fixed relative to the cylinder body 100, for example, by screws.

[0064] After the movable rod 200 is inserted into the cylinder body 100 and the cylinder end cap 160 is installed, a second lug 20 can be installed. This second lug 20 is fixed to the other end of the movable rod 200 opposite to the insertion end 201. In this embodiment, for ease of installation, the second lug 20 is not integral with the movable rod 200, but is a separate component detachably mounted on the movable rod 200. Specifically, in this embodiment, the inner hole of the second lug 20 has an M36X2 fine thread for screwing into the movable rod 200 and for fastening with a lock nut (not shown).

[0065] The first lug 10 and the second lug 20 can be installed using existing installation interfaces at the test site. For example, the first lug 10 and the second lug 20 can be hinged on the double lug support and slide rail double lug joint on the column, so that the jamming test device 1 can be directly applied to the test.

[0066] Reference Figure 1-2 The sliding component 300 is inserted through the slide groove 140 and the mounting hole 202 and detachably mounted to the movable rod 200, so that the sliding component 300 moves together with the movable rod 200. In this embodiment, when the slide groove 140 penetrates the cylinder body 100, the sliding component 300 is fixed by passing through the slide groove 140 and the mounting hole 202. Figure 3 As shown, the sliding component 300 includes a sliding bolt 301, a sliding bolt fixing block 302, and a nut 303. The sliding bolt 301 passes through the slide groove 140 and the mounting hole 202, and is fixed to the sliding bolt fixing block 302 at one end passing through the slide groove 140 and the mounting hole 202 via the nut 303. For disassembly, simply remove the nut 303 to remove the sliding bolt 301 from the movable rod 200.

[0067] As shown in the figure, the fixing component 400 is configured to slide along the slide groove 140 and, depending on the position, be fixed at a fixed position on the cylinder body 100. When the fixing component 400 is fixed to the cylinder body, a portion of the fixing component 400 can contact the sliding component 300 to restrict the movement of the sliding component 300. During testing, the locking function is achieved when the sliding component 300 on the movable rod 200 moves to the fixed position and jams. In this embodiment, since the slide groove 140 penetrates the cylinder body 100, there are two fixing components 400, configured to slide along the upper and lower sides of the slide groove 140, respectively. For simplicity, only one fixing component 400 will be described below.

[0068] In this embodiment, the fixing component 400 includes a fixing block 410 with four screw through holes, and the cylinder body has fixing holes 150. The fixing holes 150 are arranged along the slide groove on both sides 150 of the slide groove 140 to form two rows of fixing holes. The distance between the fixing holes 150 in each row is preferably the same. The fixing component 400 is fixed to the cylinder body 100 by screwing the fixing screws 440 through the screw through holes into the fixing holes 150. In the test, the fixing block 410 can be slid to the desired position and then fixed. The fixing block 410 has arc grooves in both directions to receive the sliding component 300, so as to realize the bidirectional locking function in the retraction and extension directions of the rudder surface, which is easy to operate. Specifically, in Figure 1 In this configuration, the sliding component 300 can be installed onto the movable rod 200 without the mounting hole 202 of the movable rod 200 extending beyond the fixed component 400. Then, the movable rod 200 can be pushed to move the sliding component 300 until it contacts and locks against the fixed block 410, thus achieving a locking function. Figure 3 In this configuration, the sliding component 300 can be installed onto the movable rod 200 when the mounting hole 202 of the movable rod 200 passes over the fixed component 400. Then, the movable rod 200 can be pulled to move the sliding component 300 to contact and lock with the fixed block 410, thereby achieving the locking function.

[0069] Considering that the load of some station jamming faults is large, which may cause excessive internal stress in the device after the test and make it difficult to disassemble (for example, the force between the sliding part 300 and the fixed part 400 is too large, making it difficult to disassemble the sliding part 300), a buffer release module was added to the fixed part 400.

[0070] Specifically, in this embodiment, the fixing member 400 further includes a sliding block 420 and a friction plate 430 for buffer release. The sliding block 420 is slidably disposed within the slide groove 140 and configured to contact the sliding member 300. The sliding block 420 and the friction plate 430 are connected via connecting screws 450 and clamp the fixing block 410.

[0071] Reference Figure 4 When the retaining component 400 is not removed from the cylinder body 100, the connecting screw 450 is tightened, causing the sliding block 420 (not shown here, see...) to... Figure 3 The fixed block 410 is tightly clamped by the friction plate 430, so that the fixed block 410, the sliding block 420 and the friction plate 430 move and are fixed as a whole (i.e., fixed part 400).

[0072] Reference Figure 5The fixing block 410 has a first buffer groove 411 along the direction of the slide groove. The number of first buffer grooves 411 preferably corresponds to the number of connecting screws 450, such that each first buffer groove 411 contains one connecting screw 450. During disassembly, the connecting screws 450 can be loosened, allowing the fixing block 410 to connect with the sliding block 420 (not shown here, see [link]). Figure 3 The friction between the sliding block 420 and the friction plate 430 is reduced, so the connecting screw 450 can slide in the first buffer groove 411 and drive the sliding block 420 and the friction plate 430 to slide relative to the fixed block 410. At this time, since the sliding component 300 contacts the sliding block 420, the sliding component 300 can push (or pull) the sliding block 420, the friction plate 430 and the connecting screw 450 together to move out of the first buffer groove 411, thereby reducing the stress between the sliding component 300 and the fixed component 400.

[0073] Furthermore, referring to Figure 6 The fixing block 410 also has a second buffer groove 412 along the direction of the sliding groove. The second buffer groove 412 can be formed on both sides of the first buffer groove 411. The positioning screw 460 can be fixed into the fixing hole 150 through the second buffer groove 412, so that after the fixing screw 440 is removed, the fixing block 410 can slide relative to the positioning screw 460. Specifically, the sliding member 300 continues to push or pull the sliding block 420 (not shown here, see...) Figure 3 Meanwhile, the sliding block 420 moves with the connecting screw 450, which abuts against the first buffer groove 411, and thus moves the fixed block 410 with the first buffer groove 411 a distance of the second buffer groove 412, thereby further reducing the stress between the sliding component 300 and the fixed component 400.

[0074] The installation method of the jamming resistance test device 1 of the present invention is as follows:

[0075] a) First, install the guide belt 210, insert the guide belt into the movable rod 200, and fix it with pins to prevent the guide belt 210 from moving axially;

[0076] b) Install the movable rod 200 and insert the movable rod 200 into the cylinder body 100;

[0077] c) Install the cylinder end cap 160 and secure it with four M4X20 screws;

[0078] d) Install the lock nut, screw the lock nut into the movable rod 200, and tighten it to the bottom;

[0079] e) Install the second lug 20 and screw the lug into the movable rod;

[0080] f) Install the sliding part 300, insert the sliding bolt into the cylinder and the moving rod, and then tighten the M16 nut;

[0081] g) Install the fixing component 400. Use a measuring tape to measure the distance between the center of the holes at both ends of the clamp, select the required size, move the movable rod 200, and install the fixing component 400 without moving the movable rod 200. During installation, the contact surfaces of the fixing component 400 and the sliding component 300 should remain in contact. Fix the fixing component 400 with four M12X28 screws.

[0082] h) Use a measuring tape to measure the center dimensions of the holes of the lugs 10 and 20 at both ends of the resistance test device 1. Once the dimensions are confirmed to be correct, tighten the lock nuts with an open-end wrench.

[0083] i) Remove the sliding part 300, install the jamming test device 1, place the center positions of the two holes on both sides of the jamming device to the corresponding installation positions of the flap, install the pin, and fix it with a nut.

[0084] j) Depending on the test requirements and the different positioning positions, the fixing component 400 needs to be repositioned, and all screws on the fixing component 400 should be tightened with a torque wrench.

[0085] k) Install the sliding component 300 according to the test requirements, and prepare to start the test.

[0086] The disassembly steps of the jamming test device of the present invention are the reverse of the installation steps, and disassembly can be performed step by step.

[0087] Method of using the blocking test device of the present invention:

[0088] a) Install the jamming test device 1 according to the above installation method;

[0089] b) Determine the position of the fixing screw 150 and tighten the fixing component 400 according to the test requirements;

[0090] c) After the test begins, the sliding part 300 on the movable rod 200 moves to the fixed part 400 and gets stuck, thus achieving the blocking function;

[0091] d) After the test is completed, remove the jamming test device 1 according to the disassembly steps.

[0092] The blocking test device of the present invention has the following innovative features:

[0093] (1) The jamming test device 1 can achieve jamming in both the retraction and extension directions of the rudder surface at any position within the stroke range of the rudder surface, thereby meeting the test requirements and improving the test efficiency.

[0094] (2) The jamming test device 1 utilizes the existing installation interface at the test site, including the double-ear support on the column and the double-ear connector of the slide rail, for the design and installation of the device, making the device easy to install and directly applicable to the test.

[0095] (3) Considering that the load at some stations in the jamming fault test site is large, which will cause excessive internal stress in the device after the test and make it difficult to disassemble, the jamming test device 1 has added a buffer release device module, which improves the safety and efficiency of the test.

[0096] While the structure of the present invention has been described above with reference to preferred embodiments, those skilled in the art should recognize that the above examples are merely illustrative and should not be construed as limiting the invention. Therefore, modifications and variations can be made to the present invention, all of which will fall within the scope defined by the appended claims.

Claims

1. A jamming test device, the jamming test device comprising: Cylinder block, the cylinder block having: First end and second end; An inner cavity, which is disposed axially within the cylinder and has an opening leading to the second end; as well as A sliding groove is formed on the cylinder body along the axial direction and communicates with the inner cavity. A movable rod is movably inserted into the inner cavity of the cylinder body through the opening, and a mounting hole is provided near the insertion end of the movable rod. A sliding component, inserted through the groove and the mounting hole, is detachably mounted to the movable rod, such that the sliding component moves together with the movable rod. A fixing component is provided, which is configured to slide along the groove and be fixed to the cylinder body, wherein when the fixing component is fixed to the cylinder body, a portion of the fixing component can contact the sliding component to restrict the movement of the sliding component. The sliding component is configured to be detachably installed onto the movable rod whether the mounting hole of the movable rod passes through or does not pass through the fixed component.

2. The jamming test device as described in claim 1, characterized in that, It also includes a first lug and a second lug, the first lug being fixed at the first end of the cylinder body, and the second lug being fixed at the other end of the movable rod opposite to the insertion end.

3. The jamming test device as described in claim 2, characterized in that, The first lug is integrally formed with the cylinder body, and the second lug is a separate component that is detachably mounted on the movable rod.

4. The jamming test apparatus as described in claim 1, characterized in that, It also includes a guide belt, which is fixed to the insertion end of the movable rod.

5. The jamming test apparatus as described in claim 1, characterized in that, The groove extends through the cylinder body, and the sliding component passes through the groove and is fixed in place.

6. The jamming test apparatus as described in claim 5, characterized in that, The sliding component includes a sliding bolt, a sliding bolt fixing block, and a nut. The sliding bolt passes through the groove and the mounting hole, and is fixed to the sliding bolt fixing block via the nut.

7. The jamming test apparatus as described in claim 1, characterized in that, The fixing component includes a fixing block, a sliding block, and a friction plate. The sliding block and the friction plate are connected by connecting screws and clamp the fixing block. The cylinder body has fixing holes that are arranged along the slide groove on both sides of the slide groove. The fixing block is fixed to the cylinder body by fixing screws screwed into the fixing holes, and The sliding block is slidably disposed within the groove and configured to contact the sliding component.

8. The jamming test apparatus as described in claim 7, characterized in that, The fixing block has a first buffer groove along the direction of the sliding groove, wherein after the connecting screw is loosened, the connecting screw slides in the first buffer groove, causing the sliding block and the friction plate to slide.

9. The jamming test apparatus as described in claim 8, characterized in that, The fixing block has a second buffer groove along the direction of the sliding groove, wherein the positioning screw passes through the second buffer groove and is fixed to the fixing hole, so that after the fixing screw is removed, the fixing component can slide relative to the positioning screw.

10. The jamming test apparatus as described in claim 1, characterized in that, The jamming test device is made of aluminum.

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