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CN-122009493-A - Four-point suspension device and application method thereof

CN122009493ACN 122009493 ACN122009493 ACN 122009493ACN-122009493-A

Abstract

The invention discloses a four-point suspension device and a use method thereof, and belongs to the technical field of aircraft external hanging transportation. The device comprises a shell, a plurality of hooks arranged at the lower part of the shell, an actuating mechanism for driving the hooks to open and close, and a locking mechanism linked with the actuating mechanism, wherein the locking mechanism comprises a lock rod and a lock pin, the actuating mechanism comprises a movable synchronous rod, one end of the synchronous rod is provided with a roller, the lock rod is provided with an inclined plane and a convex point which are matched with the roller, when the lock pin is unlocked from the lock rod, the roller moves along the inclined plane and passes over the convex point under the driving of the hooks, so that the lock rod is kept at a first position, and the lock pin cannot be reset and locked. The device prevents the hook from accidentally resetting after the hanging object is put in, and simultaneously improves the locking reliability.

Inventors

  • YONG LIPENG
  • Yin Zewei
  • LIU ZEXU

Assignees

  • 中航电测仪器(西安)有限公司

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. The four-point suspension device is characterized by comprising a shell, a plurality of hooks (1) arranged at the lower part of the shell, an actuating mechanism for driving the hooks (1) to open and close, and a locking mechanism linked with the actuating mechanism; The locking mechanism comprises a lock rod (8) and a lock pin (7), the actuating mechanism comprises a movable synchronizing rod (3), and one end of the synchronizing rod (3) is provided with a roller (3-2); The lock rod (8) is provided with an inclined plane (8-2) and a salient point (8-3) which are matched with the roller (3-2); When the lock pin (7) releases the lock of the lock rod (8), the roller (3-2) moves along the inclined plane (8-2) and passes over the convex point (8-3) under the driving of the hook (1), so that the lock rod (8) is kept at the first position, and the lock pin (7) cannot be reset and locked.
  2. 2. Four-point suspension device according to claim 1, characterized in that the number of hooks (1) is four, comprising a middle two hooks, the distance of which is configured to fit the lifting lug distance of the first specification suspension (12), and two hooks on both sides, the distance of which is configured to fit the lifting lug distance of the second specification suspension (13).
  3. 3. The four-point hitch device of claim 2, wherein the distance between the two middle hooks is 355.6mm and the distance between the two side hooks is 762mm.
  4. 4. Four-point suspension device according to claim 1, characterized in that the top of each hanger (1) is provided with a fork structure, and the synchronizing rod (3) is provided with a deflector rod (3-1) engaged with each fork structure, so that all hangers (1) are synchronously opened and closed by the synchronizing rod (3).
  5. 5. The four-point suspension device according to claim 1, wherein the lock lever (8) is further provided with a boss (8-4), and when the roller (3-2) passes over the boss (8-3), the roller (3-2) abuts against the boss (8-4) under the action of an elastic member, so as to maintain the lock lever (8) in the first position, and the hook (1) is in a normally open state.
  6. 6. Four-point suspension according to claim 1, characterized in that the actuating mechanism further comprises an actuating cylinder (4), the locking pin (7) being connected to the actuating cylinder (4), the locking pin (7) being provided with a manual lever (6) for manual operation.
  7. 7. Four-point suspension according to claim 1, further comprising a position sensor (10) for detecting the position of the locking pin (7) or locking bar (8).
  8. 8. Four-point suspension device according to claim 1, characterized in that the end of the synchronizing rod (3) remote from the roller (3-2) is provided with a synchronizing rod spring (2) for providing a return force of the synchronizing rod (3).
  9. 9. The four-point suspension device according to claim 1, wherein the top end of the lock rod (8) is provided with a lock rod compression spring (9) for providing a downward force to the lock rod (8).
  10. 10. A method of using a four-point suspension device according to any one of claims 1-9, wherein the four-point suspension device comprises a housing, a hook (1), a synchronizing rod (3), a lock rod (8) and a lock pin (7), wherein one end of the synchronizing rod (3) is provided with a roller (3-2), and the lock rod (8) is provided with an inclined surface (8-2), a protruding point (8-3) and a lock hole (8-1), the method comprising: Mounting: S1, pushing a lifting lug (11) of a suspended object into a hook (1) to drive the hook (1) to rotate; s2, the rotation of the hook (1) drives the synchronous rod (3) to move through the ear fork structure; s3, the roller (3-2) of the synchronous rod (3) moves and passes over the salient point (8-3) of the lock rod (8); S4, the lock rod (8) falls down to enable the lock hole (8-1) of the lock rod to be aligned with the lock pin (7), and the lock pin (7) is automatically inserted into the lock hole (8-1) to complete locking; and (3) a releasing stage: S5, unlocking the lock pin (7) to the lock rod (8); s6, under the drive of gravity or external force of a suspended object, the synchronous rod (3) moves to enable the roller (3-2) to move along the inclined plane (8-2) of the lock rod (8); And S7, the roller (3-2) passes over the convex point (8-3) to enable the lock rod (8) to be kept at the pick-up position, the lock pin (7) cannot be reset, and the hook (1) is kept in an open state stably.

Description

Four-point suspension device and application method thereof Technical Field The invention belongs to the technical field of aircraft external hanging transportation, and particularly relates to a four-point hanging device and a using method thereof, which are suitable for hanging objects with various lifting lug distances. Background According to GJB 1C-2016 general design rule of the joint of the airborne suspended object and the suspension device, the length of the lifting lug type suspended object is different, and the lifting lug type suspended object is mainly divided into a short suspended object with the lifting lug spacing of 355.6mm and a long suspended object with the lifting lug spacing of 762 mm. The existing suspension device (such as the Chinese patent with publication number of CN 112124593A) can only adapt to the space between one lifting lug, and can not realize compatibility between the two lifting lugs. When the hanging objects with different specifications are required to be switched, the whole hanging device is required to be replaced, the operation is complex, the time is long, the transportation efficiency is seriously affected, and the potential safety hazard of insufficient mounting reliability due to unexpected resetting of the hanging hooks after putting the hanging objects is present. With the vigorous development of low-altitude economy, the application scenes of aviation mounting and transportation are increasingly diversified, and frequent switching of suspended object specifications is a normal state. The market places higher demands on transportation efficiency and cost control, and the traditional mode of 'one device one use' has difficulty in meeting the actual demands. Therefore, there is an urgent need for a generalized four-point suspension device with high reliability, which has four hooks, the space between two hooks in the middle is 355.6mm, the space between two hooks on two sides is 762mm, and the aircraft can meet the mounting requirement of a short hanger with 355.6mm lifting lug space and a long hanger with 762mm lifting lug space under the condition of not replacing the suspension device, so that the mounting preparation time is saved, the transportation efficiency is improved, and the transportation cost is reduced. Disclosure of Invention In order to overcome the defects of the prior art, the invention aims to provide a four-point suspension device and a use method thereof, which are used for solving the technical problems that the conventional suspension device can only adapt to the spacing of lifting lugs and a hanger is accidentally reset after a suspended object is put in. In order to achieve the above purpose, the invention is realized by adopting the following technical scheme: The invention provides a four-point suspension device which comprises a shell, a plurality of hooks arranged at the lower part of the shell, an actuating mechanism for driving the hooks to open and close, and a locking mechanism linked with the actuating mechanism, wherein the locking mechanism is arranged on the lower part of the shell; The locking mechanism comprises a lock rod and a lock pin, the actuating mechanism comprises a movable synchronous rod, and one end of the synchronous rod is provided with a roller; The lock rod is provided with an inclined plane and a salient point which are matched with the roller; When the lock pin is unlocked to the lock rod, the roller moves along the inclined plane and passes over the convex point under the driving of the hook, so that the lock rod is kept at the first position, and the lock pin cannot be reset and locked. The lock rod is provided with an inclined plane, a convex point and a boss. The inclined plane can convert part of the transverse force into upward force required by unlocking, and the convex points are used for realizing normally open state positioning after the mechanism is opened. One end of the synchronizing rod adopts a roller, so that the friction force between the synchronizing rod and the lock rod is obviously reduced, the unlocking actuating force requirement is reduced, and the whole weight of the system is reduced. It is further preferred that the movable synchronizing rod is in particular a rod member reciprocally movable in a straight line in a horizontal direction, the movement of which is converted by the rotation of the hooks by means of a mechanical structure and is used for synchronizing the movements of all hooks. Further preferably, the roller is rotatably mounted at the end of the synchronizing bar in rolling contact with a ramp on the locking bar. Further preferably, the inclined surface is arranged so that a component force perpendicular to the moving direction of the synchronizing bar is generated when the roller moves along the inclined surface, and acts on the lock bar. Further preferably, the bump is a bump structure, and is used for forming a position passing point in cooperation with the rolle