Manual emergency locking and unlocking mechanism for foldable wing

Abstract

The invention relates to the technical field of wings, in particular to a manual emergency locking and unlocking mechanism for a foldable wing, which comprises a turbine worm assembly and a hand wheel assembly, the turbine worm assembly comprises a left guide sleeve, a deep groove ball bearing, a worm, a right guide sleeve, a spring, a key and a turbine, the hand wheel assembly comprises a limiting ring, a shell, a screw, a needle bearing, a manual rod, a self-locking nut and a hand wheel, the side, away from the hand wheel, of the manual rod penetrates through the needle bearing and abuts against the spring, the manual rod can axially slide in the needle bearing, the manual rod and the worm are coaxially arranged, a hexagonal shaft is arranged at the left end of the manual rod, and the self-locking nut is arranged at the right end of the hexagonal shaft. A hexagonal hole matched with the manual rod is formed in the right end of the worm, a threaded hole corresponding to the threaded hole of the shell in position is formed in the right guide sleeve, a screw is used for screwing, tightening and fixing, and the device has the advantages of being high in operation safety, good in operation stability, low in maintenance cost, high in operation reliability, good in man-machine effect and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of wings, and in particular to a manual emergency locking and unlocking mechanism for foldable wings. Background Art

[0002] The manual emergency locking and unlocking mechanism is used on the hydraulic and pneumatic subsystem of the electromechanical system of fixed-wing aircraft. The traditional manual emergency locking and unlocking mechanism has a large operating force, is not flexible in rotation, and the position of the manual operating mechanism is not unique, making it inconvenient to operate. After manually completing the locking / unlocking action, releasing the handwheel will not automatically reset and the completed state will remain. The handwheel assembly and handwheel replacement operations are cumbersome and inconvenient to maintain. There is a problem that the locking / unlocking action may be affected by misoperation. As users' requirements for product installation space and operability continue to increase, improvements and optimizations are needed. Summary of the Invention

[0003] In order to solve the problems mentioned in the above background technology, the present invention provides a manual emergency locking and unlocking mechanism for foldable wings.

[0004] The present invention discloses the following technical solution: a manual emergency locking and unlocking mechanism for a foldable wing, comprising a turbine and worm assembly and a handwheel assembly, wherein the turbine and worm assembly comprises a left guide sleeve, a deep groove ball bearing, a worm, a right guide sleeve, a spring, a key, and a turbine; the left deep groove ball bearing is press-fitted into the inner hole of the left guide sleeve and mounted on the left shaft of the worm; the right deep groove ball bearing is press-fitted into the inner hole of the right guide sleeve and mounted on the right shaft of the worm; the spring is sleeved on the right end shaft of the worm; the turbine is mounted on the transmission shaft of the wing via a key; and the worm is meshed with the turbine; The handwheel assembly includes a limiting ring, a housing, a screw, a needle roller bearing, a manual rod, a self-locking nut and a handwheel. The needle roller bearing is press-fitted into the inner hole of the housing. The limiting ring is assembled into the inner hole of the housing so that the through hole on the limiting ring is aligned with the threaded hole on the housing. The limiting ring limits the needle roller bearing. The manual rod is provided with an outer square shaft on one side, which passes through the through hole of the housing and cooperates with the inner square hole of the handwheel. The handwheel is mounted on the manual rod using a self-locking nut. The side of the manual rod away from the handwheel passes through the needle bearing and abuts against the spring. The manual rod can slide axially in the needle bearing. The manual rod and the worm are coaxially arranged. The left end of the manual rod is provided with a hexagonal shaft, and the right end of the worm is provided with a hexagonal hole that matches the manual rod. The right guide sleeve is provided with a threaded hole corresponding to the position of the threaded hole of the shell, which is tightened and fixed with a screw.

[0005] Furthermore, a washer is provided between the handwheel and the self-locking nut, the washer is sleeved on the manual rod, and the washer can be a stop washer.

[0006] Furthermore, the manual rod is provided with a round table located inside the housing near the needle bearing.

[0007] Furthermore, the threaded holes are four in size and evenly distributed around the circumference, and are used in conjunction with M screws, which are hexagon socket pan head screws.

[0008] Beneficial effects: Compared with the prior art, the manual emergency locking and unlocking mechanism of the foldable wing of the present invention adopts a turbine worm structure design, with a large transmission ratio, compact structure, strong load-bearing capacity, smooth transmission, and can realize staggered axis movement; it is easy to operate and saves effort, the manual force value conforms to ergonomics, the unlocking / locking operation direction of the manual operating mechanism is unique, and the handwheel assembly and handwheel are easy to install and disassemble; after the locking / unlocking operation is completed, the handwheel assembly can restore and maintain the completed locking / unlocking state, and has the characteristics of high operational safety, good operating stability, low maintenance cost, strong operational reliability, and good human-machine efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the present invention; Figure 3 A schematic diagram of a hand wheel of the present invention; Figure 4 A schematic diagram of a manual lever of the present invention; Figure 5 A schematic diagram of a turbine according to the present invention; In the figure: 1. Left guide sleeve, 2. Deep groove ball bearing, 3. Worm, 4. Right guide sleeve, 5. Spring, 6. Limit ring, 7. Housing, 8. Screw, 9. Needle roller bearing, 10. Manual lever, 11. Washer 12. Self-locking nut, 13. Handwheel, 14. Key, 15. Turbine, 101-square shaft, 102-hexagonal shaft, 301-hexagonal hole. DETAILED DESCRIPTION

[0010] like Figures 1 to 5 As shown, a manual emergency locking and unlocking mechanism for a foldable wing includes a worm gear assembly and a handwheel assembly, wherein the worm gear assembly includes a left guide sleeve 1, a deep groove ball bearing 2, a worm gear 3, a right guide sleeve 4, a spring 5, a key 14 and a worm gear 15. The left deep groove ball bearing 2 is press-fitted into the inner hole of the left guide sleeve 1 and installed on the left shaft of the worm gear 3. The left guide sleeve 1 is assembled into the hexagonal groove at the left end of the upper cover plate of the wing (not shown in the figure) and fixed in a limited position. The right deep groove ball bearing 2 is press-fitted into the inner hole of the right guide sleeve 4 and installed on the right shaft of the worm gear 3. The spring 5 is sleeved on the right end shaft of the worm gear 3. The right guide sleeve 4 is assembled into the hexagonal groove at the right end of the upper cover plate of the wing (not shown in the figure) and fixed in a limited position. The worm gear 15 is mounted on the transmission shaft of the wing (not shown in the figure) through the key 14 and then assembled to the fixing seat (not shown in the figure). The worm gear 3 is meshed with the worm gear 15. The handwheel assembly includes a limiting ring 6, a housing 7, a screw 8, a needle bearing 9, a manual rod 10, a self-locking nut 12 and a handwheel 13. The needle bearing 9 is press-fitted into the inner hole of the housing 7, and the limiting ring 6 is assembled into the inner hole of the housing 7 so that the through hole on the limiting ring 6 is aligned with the threaded hole on the housing 7. The limiting ring 6 limits the needle bearing 9. The manual rod 10 is provided with an outer square shaft 101 on one side passing through the through hole of the housing 7 and cooperating with the inner square hole of the handwheel 13. The handwheel 13 is mounted on the manual rod 10 using the self-locking nut 12; The worm gear assembly and the handwheel assembly are assembled, and the manual rod 10 passes through the needle bearing 9 on the side away from the handwheel 13 and abuts against the spring 5. The manual rod 10 can slide axially in the needle bearing 9. The manual rod 10 and the worm 3 are coaxially arranged. A hexagonal shaft 102 is provided at the left end of the manual rod 10, and a hexagonal hole 301 that cooperates with the manual rod 10 is provided at the right end of the worm 3. Due to the elastic force of the spring 5, when in the free state, the hexagonal shaft 102 of the manual rod 10 is located outside the hexagonal hole 301 of the worm 3 and there is a gap; a threaded hole corresponding to the position of the threaded hole of the housing 7 is provided on the right guide sleeve 4, which is screwed in and fixed with a screw 8.

[0011] Furthermore, a washer 11 is provided between the hand wheel 13 and the self-locking nut 12. The washer 11 is sleeved on the manual rod 10. The washer 11 can be a stop washer to effectively prevent the self-locking nut 12 from loosening. Furthermore, the manual rod 10 is provided with a round table near the needle bearing 9 in the housing 7 to prevent the manual rod 10 from falling out of the needle bearing 9; Furthermore, the threaded holes are four in size and evenly distributed around the circumference, and are used in conjunction with M3 screws 8 , which are hexagon socket pan head screws.

[0012] The specific implementation process is as follows: Manual emergency unlocking of the foldable wings: Press the handwheel 13 and make fine adjustments in the circumference so that the hexagonal shaft 102 at the left end of the manual rod 10 extends into the hexagonal hole 301 at the right end of the worm 3, rotate the handwheel 13 counterclockwise, drive the worm 3 to rotate, and then rotate the turbine 15. Due to the limiting effect of the key 14 on the turbine 15, the transmission shaft (not shown in the figure) assembled on the turbine 15 moves left relative to the central axis of the turbine 15, realizing the manual emergency unlocking function of the foldable wings. After completing the unlocking action, release the handwheel 13. Due to the return elastic force of the spring 5, the hexagonal shaft 102 of the manual rod 10 exits the hexagonal hole 301 of the worm 3; Manual emergency locking of the foldable wings: Press The handwheel 13 is finely adjusted in a circular manner so that the hexagonal shaft 102 at the left end of the manual rod 10 extends into the hexagonal hole 301 at the right end of the worm 3. The handwheel 13 is rotated clockwise to drive the worm 3 to rotate, thereby rotating the turbine 15. Due to the limiting effect of the key 14 on the turbine 15, the transmission shaft (not shown in the figure) assembled on the turbine 15 moves to the right relative to the central axis of the turbine 15, realizing the manual emergency unlocking function of the foldable wing. After the locking action is completed, the handwheel 13 is released. Due to the restoring elastic force of the spring 5, the hexagonal shaft 102 of the manual rod 10 withdraws from the hexagonal hole 301 of the worm 3. Even if the manual rotation 13 is operated by mistake, it will not affect the locked / unlocked state that has been completed on the aircraft.

[0013] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A manual emergency locking and unlocking mechanism for a foldable wing, comprising a worm gear assembly and a handwheel assembly, characterized in that: The worm gear assembly comprises a left guide sleeve (1), a deep groove ball bearing (2), a worm (3), a right guide sleeve (4), a spring (5), a key (14) and a turbine (15), wherein the left deep groove ball bearing (2) is pressed into the inner hole of the left guide sleeve (1) and mounted on the left shaft of the worm (3), the right deep groove ball bearing (2) is pressed into the inner hole of the right guide sleeve (4) and mounted on the right shaft of the worm (3), the spring (5) is sleeved on the right end shaft of the worm (3), the turbine (15) is mounted on the transmission shaft of the wing through the key (14), and the worm (3) is meshed with the turbine (15); The handwheel assembly comprises a limiting ring (6), a housing (7), a screw (8), a needle roller bearing (9), a manual rod (10), a self-locking nut (12) and a handwheel (13); the needle roller bearing (9) is pressed into the inner hole of the housing (7); the limiting ring (6) is assembled into the inner hole of the housing (7) so that the through hole on the limiting ring (6) is aligned with the threaded hole on the housing (7); the limiting ring (6) limits the needle roller bearing (9); the manual rod (10) is provided with an outer square shaft (101) on one side passing through the through hole of the housing (7) and cooperating with the inner square hole of the handwheel (13); the handwheel (13) is mounted on the manual rod (10) using the self-locking nut (12); The manual rod (10) passes through the needle bearing (9) on the side away from the hand wheel (13) and abuts against the spring (5). The manual rod (10) can slide axially in the needle bearing (9). The manual rod (10) and the worm (3) are coaxially arranged. The left end of the manual rod (10) is provided with a hexagonal shaft (102). The right end of the worm (3) is provided with a hexagonal hole (301) that matches the manual rod (10). The right guide sleeve (4) is provided with a threaded hole corresponding to the position of the threaded hole of the housing (7), and is screwed and fixed using a screw (8).

2. The manual emergency locking and unlocking mechanism for foldable wings according to claim 1, characterized in that: A washer (11) is provided between the hand wheel (13) and the self-locking nut (12). The washer (11) is sleeved on the manual rod (10). The washer (11) can be a stop washer.

3. The manual emergency locking and unlocking mechanism for foldable wings according to claim 1, characterized in that: The manual rod (10) is located inside the housing (7) and is provided with a round table near the needle bearing (9).

4. The manual emergency locking and unlocking mechanism for foldable wings according to claim 1, characterized in that: The threaded holes are M3 in size and four in number. The threaded holes are evenly distributed around the circumference and are used in conjunction with M3 screws (8). The screws (8) are hexagon socket head screws.

Images