CN201362366Y - Cowling lock mechanism of helicopter nacelle - Google Patents

Abstract

The utility model belongs to the technical field of aviation, which relates to a cowling lock mechanism of a helicopter nacelle. The lock shell of the cowling lock mechanism is fixed on a cowling of a helicopter nacelle, the side of a boss positioned on one side of the center of the helicopter on the lock shell is equipped with a lock hole, a lock pin is inserted into the lock hole of the lock shell, the top portion of the boss is provided with a waist-shaped hole, a small wheel is fixed onto the lock pin through a pin bolt, one end of a swinging arm is fixed onto the lock pin, a cylindrical boss is arranged on the side opposite to the boss of the lock shell, a torsion spring and a big wheel are installed on the cylindrical boss, the other end of the swinging ring is fixed onto the big wheel, a gasket and a self-lock nut are pressed on the swinging arm, one end of the torsion spring is connected with the lock shell, the other end of the torsion spring is inserted into a pin bolt installed on the swinging arm, and an anti-false-locking device is arranged on the side of the cylindrical boss. The cowling lock mechanism of a helicopter nacelle completes locking action through leading the lock pin to be inserted inside the lock hole of the lock shell, and has reliable locking state. Besides, the anti-false-locking device can indicate whether the nacelle cowling is closed in place or not, and the safety of the lock is effectively improved.

Description

Helicopter piggyback pod fairing latch mechanism

Technical field

The utility model belongs to the aeronautical technology field, relates to a kind of helicopter piggyback pod fairing latch mechanism.

Background technology

At present, helicopter piggyback pod fairing lock is rolled by latch hook, extension spring, lock to be formed, groundwork is the rotor switch handle, drive latch hook, itself and lock are hooked together reach closed condition, when closing, the latch hook point need overcome bigger power just can be made latch hook root and lock roll seat to hook together and put in place, because trace is closed easy deformation under fairing and the hi-heat condition improper, cause locking mechanism to produce false lock phenomenon easily, cause fairing in the helicopter flight process, to be subjected to air resistance and flick, have a strong impact on helicopter flight safety.

Summary of the invention

The utility model purpose provides a kind of at the improper helicopter piggyback pod fairing latch mechanism that is not easy to cause the false lock of locking mechanism generation phenomenon under fairing and the hi-heat condition of closing.Technical solution of the present utility model is, lock housing is fixed on the helicopter piggyback pod fairing, and the side that is positioned at the boss of helicopter center one side on the lock housing has lockhole, and lock pin inserts in the lockhole of lock housing; The top of boss has waist shaped hole, and on lock pin, an end of swing arm is fixed on the lock pin trundle with dowel fixes; A relative side with boss is provided with cylinder boss on the lock housing, and torsion spring and big roller are housed on the cylinder boss, and the other end of swing arm is fixed on the big roller; Be pressed with pad and self-locking mother Luo in the swing arm; Torsion spring one end is connected with lock housing, and the other end inserts in the bolt axle of installing in the swing arm; One side of cylinder boss is provided with the anti-false locking device; The anti-false locking device comprises spring strut, Luo bolt, slide block, spring, and the Luo bolt joins by spring strut and the slide block that is embedded on the boss, and spring housing is connected on the spring strut inner bolt.Advantage that the utlity model has and beneficial effect, the utility model adopts lock pin to insert the lock housing lockhole and finishes the locking action, this form locking state is firm, and can reflect whether the piggyback pod fairing closes by the anti-false locking device puts in place, promptly when the slide block in anti-false locking device when complete opening does not put in place, lock pin can't pass the lockpin hole of lock housing, this information feeds back in the handle mechanism by the connecting rod in the locking mechanism, make the handle can't clickwise, fairing was not closed and was put in place this moment, and safe reliability is effectively improved.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the lateral plan of Fig. 1.

The specific embodiment

Lock housing 1 effect is to be used for fixing on helicopter piggyback pod fairing, and the side that is positioned at the boss 2 of helicopter center one side on the lock housing 1 has lockhole 3, and lock pin 4 inserts in the lockhole 3 of lock housing 1; Lock pin 4 can slide in lockhole 3 and be the opening and closing two states, the top of boss 2 has waist shaped hole 5, the length of waist shaped hole 5 is the stroke of lock pin movement, trundle 6 usefulness pins 8 are fixed on the lock pin 4, the effect of trundle is to reduce friction, pin 8 plays the effect that prevents that trundle 6 from coming off, and an end of swing arm 7 is fixed on the lock pin 4, is used for the transmission of connecting rod; Be provided with cylinder boss 9 with boss 2 relative sides on the lock housing 1, its effect is that swing arm 7 is rotated with cylinder boss 9 centers, torsion spring 10 and big roller 11 are housed on the cylinder boss 9, torsion spring guarantees that under free state lock pin keeps closed condition, the other end of swing arm 7 is fixed on the big roller 11, its objective is to reduce friction; Be pressed with pad 12 and self-locking mother Luo 13 in the swing arm 7; Torsion spring 10 1 ends are connected with lock housing 1, and the other end inserts in the bolt axle of installing in the swing arm 7 14; One side of cylinder boss 9 is provided with the anti-false locking device; The anti-false locking device comprises spring strut 16, Luo bolt 17, slide block 18, spring 15, Luo bolt 17 joins by spring strut 16 and the slide block 18 that is embedded on the boss 2, spring 15 is socketed on spring strut 16 inner bolts 17, spring 15 remains on closed condition with slide block 18 under free state, promptly block lockhole 3, to guarantee that this moment, lock pin 4 can't pass through lockhole 3.

Claims (1)

1. helicopter piggyback pod fairing latch mechanism, it is characterized in that, lock housing (1) is fixed on the helicopter piggyback pod fairing, and the side that is positioned at the boss (2) of helicopter center one side on the lock housing (1) has lockhole (3), and lock pin (4) inserts in the lockhole (3) of lock housing (1); The top of boss (2) has waist shaped hole (5), and trundle (6) is fixed on the lock pin (4) with pin (8), and an end of swing arm (7) is fixed on the lock pin (4); Lock housing (1) goes up a relative side with boss (2) and is provided with cylinder boss (9), and torsion spring (10) and big roller (11) are housed on the cylinder boss (9), and the other end of swing arm (7) is fixed on the big roller (11); Be pressed with pad (12) and self lock nut (13) in the swing arm (7); Torsion spring (10) one ends are connected with lock housing (1), and the other end inserts swing arm (7) and goes up in the bolt axle of installing (14); One side of cylinder boss (9) is provided with the anti-false locking device; The anti-false locking device comprises spring strut (16), bolt (17), slide block (18), spring (15), and bolt (17) joins by spring strut (16) and the slide block (18) that is embedded on the boss (2), and spring (15) is socketed on spring strut (16) inner bolt (17).

Images