Swing hook lock for aircraft engine cowls

Abstract

The application discloses a swing angle hook lock for an airplane engine cover, which comprises a lock shell body, a movable slot horizontally formed in the top of the lock shell body, a moving slot vertically formed in the right side of the lock shell body and communicated with the right end of the movable slot, and a push rod, which is arranged in the front-rear direction, has a hook-shaped rear end and is used for hooking on a locking bolt on the inner side of a right anti-thrust device fairing of an airplane, and the middle part of the push rod is fixed on the inner side of a left anti-thrust device fairing of the airplane through bolts, wherein a moving piece is fixedly connected with the upper end of the push rod, the lower end of the moving piece extends into the movable slot and can move leftward and rightward in the movable slot, so as to pull the push rod to move leftward and rightward, and a transmission piece is vertically arranged in the moving slot and is hinged with the lower end of the moving piece; the swing angle hook lock can longitudinally lock the left anti-thrust device fairing and the right anti-thrust device fairing, is simple to operate, has flexible adaptability and good stability.

Description

Technical Field

[0001] This invention belongs to the field of aircraft peripheral parts, and particularly relates to a swing hook lock for an aircraft engine cowling. Background Technology

[0002] An aircraft engine is a highly complex and precise thermodynamic machine. As the heart of an aircraft, it not only powers the aircraft's flight but also serves as a vital driving force for the development of the aviation industry. Every major transformation in the history of human aviation has been inseparable from the technological advancements in aircraft engines.

[0003] The existing locking mechanisms are designed to travel along the direction of the left and right thrust reverser fairings of the aircraft, i.e., lateral locking. However, this locking method is very likely to cause longitudinal misalignment gaps between the left and right thrust reverser fairings, which can easily lead to safety hazards and affect the safety of the aircraft. Summary of the Invention

[0004] The purpose of this invention is to provide a swing hook lock for an aircraft engine cowling, which can longitudinally lock the left and right thrust reverser cowlings of the aircraft.

[0005] This invention adopts the following technical solution: a swing-angle hook lock for an aircraft engine cowling, comprising:

[0006] The lock housing has a horizontally opening movable slot on its top and a vertically opening movable slot on its right side, with the upper end of the movable slot connected to the right end of the movable slot. Its lower part is fixed to the inside of the aircraft's left thrust reverser fairing by bolts.

[0007] The push rod, positioned along the front-to-back direction, has a hook-shaped rear end for hooking onto the locking bolt inside the right thrust reverser fairing of the aircraft, while its middle part is fixed to the inside of the left thrust reverser fairing of the aircraft by bolts.

[0008] The movable component has its upper end fixedly connected to the push rod, and its lower end extends into the movable groove, allowing it to move left and right along the groove, thereby pulling the push rod to move left and right.

[0009] The transmission component is vertically arranged and located in the moving groove. Its upper end is hinged to the lower end of the moving component. It is used to move up and down, and then the moving component pulls the front end of the push rod to move left and right, so that the rear end of the push rod loosens or hooks the locking bolt to complete the unlocking or locking.

[0010] Furthermore, it also includes a toggle element, located on the lower side of the lock housing, hinged to the transmission element, used to pull the transmission element up and down during the up and down rotation process.

[0011] Furthermore, the moving part includes:

[0012] The fixed plate is horizontal and positioned along the left-right direction.

[0013] The upright plate is installed vertically on the upper part of the fixed plate, and its lower end is fixedly connected to the fixed plate.

[0014] The sliding column is a columnar structure located on the lower side of the fixed plate and inside the movable groove. Its upper end is fixedly connected to the fixed plate. A fixed groove is provided on the lower side of the sliding column along the left and right direction. The fixed groove is used to hinge with the transmission component. The sliding column is used to move left and right along the movable groove under the drive of the transmission component.

[0015] Furthermore, there are two upright panels, parallel to each other and arranged in a front-to-back direction, with a fixing ring between the two upright panels.

[0016] The front end of the push rod is connected to a collar via a bearing. The collar is fitted around the bearing. A support rod is fixedly connected to the left side of the collar. The support rod is set along the left and right direction and passes through the right upright plate, the fixing ring and the left upright plate in sequence from right to left to fix the push rod to the moving part.

[0017] Furthermore, the transmission components, from top to bottom, include an upper transmission plate, a connecting rod, and a lower transmission plate located in the moving groove. The upper end of the upper transmission plate extends into the fixed groove of the sliding column and is hinged to the sliding column, and its lower end is hinged to the upper end of the connecting rod. The upper end of the lower transmission plate is hinged to the lower end of the connecting rod, and its lower end is hinged to the actuating element. The lower transmission plate is used to move forward and downward under the action of the actuating element, and then pulls the push rod to move in sequence through the connecting rod and the upper transmission plate.

[0018] Furthermore, the left and right sides of the lower side of the lock housing extend downwards to form a left support plate and a right support plate.

[0019] The toggle element includes:

[0020] The housing is U-shaped with its opening facing rearward. The ear plates on either side are positioned close to the left and right support plates, respectively. The right support plate is hinged to the lower end of the lower transmission plate.

[0021] The handle is positioned along the front-to-back direction and is located on the left side of the actuation housing. Its rear end is fixedly connected to the left side wall of the actuation housing, and its front end is used to rotate forward and downward when subjected to force, thereby causing the lower end of the lower transmission plate to move forward and downward, which in turn pulls the upper transmission plate through the connecting rod.

[0022] Furthermore, the toggle also includes:

[0023] The lower fixing rod passes through the left ear plate, left support plate, right support plate, and right ear plate in sequence from left to right, so that the actuating housing and the lock housing are hinged.

[0024] The upper fixing rod is located above and parallel to the lower fixing rod, and its two ends are fixedly connected to the left ear plate and the right ear plate, respectively.

[0025] A torsion spring, fitted onto the lower fixed rod, has one end resting against the rear wall of the lock housing and the other end resting on the upper fixed rod, and is used to provide torque to the handle.

[0026] Furthermore, the rear end of the handle extends upward to form a pointed protrusion.

[0027] A sliding housing is fixedly connected to the left side of the lock housing. A sliding hole is provided on the front side of the sliding housing. The sliding housing is vertically arranged and has an extension groove that extends vertically from bottom to top inside. An elastic element and a fixing pin are placed in the extension groove from top to bottom. The lower end of the fixing pin is used to extend out of the extension groove and lock the pointed protrusion to limit its position when locked. A positioning pin is also fixedly connected to the front side wall of the fixing pin. The positioning pin is arranged at the front and rear. Its rear end is fixedly connected to the fixing pin and its front end extends out of the sliding hole of the sliding housing. The positioning pin is used to move upward along the sliding hole and drive the fixing pin to move upward, so that the fixing pin releases the pointed protrusion of the handle to unlock.

[0028] The beneficial effects of this invention are as follows: This invention uses a toggle to pull the transmission component up and down, which in turn pulls the moving component to swing left and right, causing the rear end of the push rod to swing left and right to complete the opening and closing. Therefore, this invention can longitudinally lock the left and right thrust reverser fairings, that is, lock them along the direction of the line connecting the left and right thrust reverser fairings of the vertical aircraft, avoiding longitudinal misalignment gaps between the left and right thrust reverser fairings due to the locking mechanism. This invention is simple to operate, flexible in adaptability, and has good stability. Attached Figure Description

[0029] Figure 1 This is an exploded view of the locked state of the present invention;

[0030] Figure 2 This is a schematic diagram of the lock housing of the present invention.

[0031] The components are as follows: 10. Lock housing; 11. Left support plate; 12. Right support plate; 13. Movable groove; 14. Moving groove; 20. Push rod; 21. Rear end; 22. Front end; 30. Moving component; 31. Fixed plate; 32. Vertical plate; 33. Sliding column; 34. Fixed groove; 35. Collar; 36. Support rod; 37. Fixed ring; 40. Transmission component; 41. Upper transmission plate; 42. Connecting rod; 43. Lower transmission plate; 50. Actuating component; 51. Actuating housing; 52. Ear plate; 53. Handle; 54. Lower fixed rod; 55. Upper fixed rod; 56. Torsion spring; 57. Pointed protrusion; 60. Sliding housing; 61. Sliding hole; 62. Elastic component; 63. Fixed pin; 64. Positioning pin. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0033] This invention discloses a swivel hook lock for an aircraft engine cowling, such as... Figure 1 and Figure 2 As shown, it includes a lock housing 10, a push rod 20, a moving part 30, and a transmission part 40.

[0034] The top of the lock housing 10 is horizontally provided with a movable groove 13, and the right side of the lock housing 10 is vertically provided with a moving groove 14, the upper end of the moving groove 14 being connected to the right end of the movable groove 13. The lower part of the lock housing 10 is fixed to the inside of the left thrust reverser fairing of the aircraft by bolts.

[0035] The push rod 20 is arranged in the front-to-back direction. The rear end 21 of the push rod 20 is hook-shaped and is used to hook onto the locking bolt inside the right thrust reverser fairing of the aircraft. The middle part of the push rod 20 is fixed to the inside of the left thrust reverser fairing of the aircraft by bolts.

[0036] The upper end of the movable part 30 is fixedly connected to the push rod 20, and the lower end of the movable part 30 extends into the movable groove 13. The movable part 30 can move left and right along the movable groove 13, thereby pulling the push rod 20 to move left and right. The transmission part 40 is vertically arranged and located in the movable groove 14. The upper end of the transmission part 40 is hinged to the lower end of the movable part 30. The transmission part 40 is used to move up and down, thereby pulling the front end 22 of the push rod 20 to move left and right through the movable part 30, so that the rear end 21 of the push rod 20 loosens or hooks the locking bolt of the aircraft cabin door to complete the unlocking or locking.

[0037] The present invention also includes a toggle member 50, which is located on the lower side of the lock housing 10. The toggle member 50 is hinged to the transmission member 40 and is used to pull the transmission member 40 up and down during the up and down rotation process.

[0038] The movable component 30 includes: a fixed plate 31, a vertical plate 32, and a sliding column 33. The fixed plate 31 is horizontal and arranged in the left-right direction, and the vertical plate 32 is vertically arranged. The vertical plate 32 is located on the upper side of the fixed plate 31, and the lower end of the vertical plate 32 is fixedly connected to the fixed plate 31. The sliding column 33 is a columnar structure. The sliding column 33 is located on the lower side of the fixed plate 31 and in the movable groove 13. The upper end of the sliding column 33 is fixedly connected to the fixed plate 31. A fixed groove 34 is provided on the lower side of the sliding column 33 in the left-right direction. The fixed groove 34 is used to hinge with the transmission component 40. The sliding column 33 is used to move left and right along the movable groove 13 under the drive of the transmission component 40.

[0039] There are two upright plates 32, which are parallel to each other and arranged in a front-to-back direction. A fixing ring 37 is provided between the two upright plates 32. The front end 22 of the push rod 20 is connected to a collar 35 through a bearing. The collar 35 is sleeved on the outside of the bearing. A support rod 36 is fixedly connected to the left side of the collar 35. The support rod 36 is arranged in a left-to-right direction and passes through the right upright plate 32, the fixing ring 37 and the left upright plate 32 in sequence from right to left, and then fixes the push rod 20 to the moving part 30.

[0040] The transmission component 40 includes, from top to bottom, an upper transmission plate 41, a connecting rod 42, and a lower transmission plate 43 located in the moving groove 14. The upper end of the upper transmission plate 41 extends into the fixing groove 34 of the sliding column 33 and is hinged to the sliding column 33. The lower end of the upper transmission plate 41 is hinged to the upper end of the connecting rod 42. The upper end of the lower transmission plate 43 is hinged to the lower end of the connecting rod 42. The lower end of the lower transmission plate 43 is hinged to the actuating member 50. The lower transmission plate 43 is used to move forward and downward under the action of the actuating member 50, thereby pulling the push rod 20 to move in sequence through the connecting rod 42 and the upper transmission plate 41.

[0041] The left and right sides of the lower side of the lock housing 10 extend downward to form a left support plate 11 and a right support plate 12. The actuating member 50 includes an actuating housing 51 and a handle 53. The actuating housing 51 is U-shaped and the opening of the actuating housing 51 faces backward. The ear plates 52 on both sides of the actuating housing 51 are respectively set close to the left support plate 11 and the right support plate 12. The right support plate 12 is hinged to the lower end of the lower transmission plate 43.

[0042] The handle 53 is arranged along the front-back direction and is located on the left side of the actuation housing 51. The rear end of the handle 53 is fixedly connected to the left side wall of the actuation housing 51. The front end of the handle 53 is used to rotate forward and downward after being subjected to force, thereby causing the lower end of the lower transmission plate 43 to move forward and downward, and then pulling the upper transmission plate 41 to move through the connecting rod 42.

[0043] The actuating component 50 also includes: a lower fixed rod 54, an upper fixed rod 55, and a torsion spring 56. The lower fixed rod 54 passes through the left ear plate 52, the left support plate 11, the right support plate 12, and the right ear plate 52 from left to right, so that the actuating housing 51 is hinged to the lock housing 10. The upper fixed rod 55 is located above the lower fixed rod 54 and is arranged parallel to it. The two ends of the upper fixed rod 55 are fixedly connected to the left ear plate 52 and the right ear plate 52, respectively. The torsion spring 56 is sleeved on the lower fixed rod 54. One end of the torsion spring 56 abuts against the rear wall of the lock housing 10, and the other end of the torsion spring 56 rests on the upper fixed rod 55. The torsion spring 56 is used to provide torque to the handle 53.

[0044] The rear end of the handle 53 extends upward to form a pointed protrusion 57. A sliding housing 60 is fixedly connected to the left side of the lock housing 10. A sliding hole 61 is provided on the front side of the sliding housing 60. The sliding housing 60 is vertically arranged and has an extension groove vertically arranged from bottom to top inside. An elastic element 62 and a fixing pin 63 are placed in the extension groove from top to bottom. The lower end of the fixing pin 63 is used to extend out of the extension groove and lock the pointed protrusion 57 to limit its position when locked. A positioning pin 64 is also fixedly connected to the front side wall of the fixing pin 63. The positioning pin 64 is arranged at the front and rear. Its rear end is fixedly connected to the fixing pin 63, and its front end extends out of the sliding hole 61 of the sliding housing 60. The positioning pin 64 is used to move upward along the sliding hole 61 and drive the fixing pin 63 to move upward, so that the fixing pin 63 releases the pointed protrusion 57 of the handle 53 to unlock.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A swivel hook lock for an aircraft engine cowling, characterized in that, include: The lock housing (10) has a horizontally opening movable groove (13) on its top and a vertically opening movable groove (14) on its right side. The upper end of the movable groove (14) is connected to the right end of the movable groove (13), and its lower part is fixed to the inside of the left thrust reverser fairing of the aircraft by bolts. The push rod (20) is arranged in the front-rear direction, and its rear end (21) is hook-shaped and used to hook onto the locking bolt inside the right thrust reverser fairing of the aircraft. The middle part is fixed to the inside of the left thrust reverser fairing of the aircraft by bolts. The movable part (30) has its upper end fixedly connected to the push rod (20), and its lower end extends into the movable groove (13), which can move left and right along the movable groove (13), thereby pulling the push rod (20) to move left and right. The transmission component (40) is vertically arranged and located in the moving groove (14). Its upper end is hinged to the lower end of the moving component (30) and is used to move up and down. In turn, the moving component (30) pulls the front end (22) of the push rod (20) to move left and right, so that the rear end (21) of the push rod (20) loosens or hooks the locking bolt to complete the unlocking or locking.

2. The angular hook lock for an aircraft engine cowling according to claim 1, characterized in that, It also includes a toggle (50), located on the lower side of the lock housing (10), hinged to the transmission member (40), for pulling the transmission member (40) up and down during the up and down rotation.

3. A swing hook lock for an aircraft engine cowling according to claim 1 or 2, characterized in that, The movable element (30) includes: The fixing plate (31) is horizontal and set in the left-right direction. A vertical plate (32) is installed on the upper side of the fixed plate (31), and its lower end is fixedly connected to the fixed plate (31). The sliding column (33) is a columnar structure located on the lower side of the fixed plate (31) and inside the movable groove (13). Its upper end is fixedly connected to the fixed plate (31). A fixed groove (34) is provided on the lower side of the sliding column (33) along the left and right direction. The fixed groove (34) is used to hinge with the transmission component (40). The sliding column (33) is used to move left and right along the movable groove (13) under the drive of the transmission component (40).

4. A swing hook lock for an aircraft engine cowling according to claim 3, characterized in that, Two vertical plates (32) are provided, which are parallel to each other and arranged in a front-to-back direction. A fixing ring (37) is provided between the two vertical plates (32). The front end (22) of the push rod (20) is connected to a collar (35) through a bearing. The collar (35) is sleeved on the outer periphery of the bearing. A support rod (36) is fixedly connected to the left side of the collar (35). The support rod (36) is arranged along the left and right direction and passes through the right upright plate (32), the fixing ring (37) and the left upright plate (32) in sequence from right to left, and then fixes the push rod (20) on the moving part (30).

5. A swing hook lock for an aircraft engine cowling according to claim 1 or 2, characterized in that, The transmission component (40) includes, from top to bottom, an upper transmission plate (41), a connecting rod (42), and a lower transmission plate (43) located in the moving groove (14). The upper end of the upper transmission plate (41) extends into the fixed groove (34) of the sliding column (33) and is hinged to the sliding column (33). Its lower end is hinged to the upper end of the connecting rod (42). The upper end of the lower transmission plate (43) is hinged to the lower end of the connecting rod (42), and its lower end is hinged to the actuating element (50). The lower transmission plate (43) is used to move forward and downward under the action of the actuating element (50), and then pull the push rod (20) to move in sequence through the connecting rod (42) and the upper transmission plate (41).

6. A swing-angle hook lock for an aircraft engine cowling according to claim 5, characterized in that, The left and right sides of the lower side of the lock housing (10) extend downward to form a left support plate (11) and a right support plate (12). The actuating element (50) includes: The housing (51) is U-shaped with its opening facing rearward. The ear plates (52) on both sides are respectively set close to the left support plate (11) and the right support plate (12). The right support plate (12) is hinged to the lower end of the lower transmission plate (43). The handle (53) is arranged along the front-back direction and is located on the left side of the actuation housing (51). Its rear end is fixedly connected to the left side wall of the actuation housing (51). Its front end is used to rotate forward and downward after being subjected to force, thereby causing the lower end of the lower transmission plate (43) to move forward and downward, and then pulling the upper transmission plate (41) through the connecting rod (42).

7. A swing-angle hook lock for an aircraft engine cowling according to claim 6, characterized in that, The actuating element (50) further includes: The lower fixing rod (54) passes through the left ear plate (52), left support plate (11), right support plate (12), and right ear plate (52) from left to right, so that the actuating housing (51) is hinged to the lock housing (10). The upper fixing rod (55) is located above the lower fixing rod (54) and is arranged parallel to it. Its two ends are fixedly connected to the left ear plate (52) and the right ear plate (52) respectively. A torsion spring (56) is sleeved on the lower fixed rod (54), with one end abutting against the rear wall of the lock housing (10) and the other end resting on the upper fixed rod (55), for providing torque to the handle (53).

8. A swing hook lock for an aircraft engine cowling according to claim 7, characterized in that, The rear end of the handle (53) extends upward to form a pointed protrusion (57). A sliding housing (60) is fixedly connected to the left side of the lock housing (10). A sliding hole (61) is provided on the front side of the sliding housing (60). The sliding housing (60) is vertically arranged and has an extension groove vertically arranged from bottom to top inside. An elastic element (62) and a fixing pin (63) are placed in the extension groove from top to bottom. The lower end of the fixing pin (63) is used to extend out of the extension groove and lock the pointed protrusion (57) to limit its position when locked. A positioning pin (64) is also fixedly connected to the front side wall of the fixing pin (63). The positioning pin (64) is arranged front and back. Its rear end is fixedly connected to the fixing pin (63), and its front end extends out of the sliding hole (61) of the sliding housing (60). The positioning pin (64) is used to move upward along the sliding hole (61) and drive the fixing pin (63) to move upward, so that the fixing pin (63) releases the pointed protrusion (57) of the handle (53) to unlock.

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