Anti-clamping-stagnation eccentric hook lock structure

Abstract

The utility model belongs to the technical field of aviation structures, and discloses an anti-clamping eccentric hook lock structure, which comprises a lock hook, a lock shaft, an eccentric wheel and a ferrule, a lock support is fixed on an aircraft floor, the lock shaft is rotatably or fixedly arranged on the lock support, and a rotating and fixing device is arranged between the lock shaft and the lock support; wherein the lock shaft is an eccentric shaft, and a freely rotating ferrule is sleeved outside an eccentric wheel of the lock shaft; a hook opening of the lock hook is opposite to the eccentric wheel of the lock shaft, and the rotating structure controls the lock hook to rotate around the lock hook shaft and make contact with or disengage from the lock shaft. The utility model can be used for a cargo bridge door lock device, the middle part of the lock shaft is made into an eccentric wheel, and the clearance between a cargo hold door lock hook and the lock shaft can be adjusted by rotating the lock shaft; an eight-edge inner hole of the lock washer is matched with an eight-edge boss of the lock shaft, four notches in the end of the lock washer are different in angle with an eight-edge face, lock shaft seat lug hole teeth are inserted into one of the four notches, and the aim of controlling gaps in a locking mode is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation structures, and relates to a locking and unlocking structure for an aviation cargo hold bridge door, in particular to an anti-jamming eccentric hook lock structure. Background Art

[0002] The aircraft cargo bridge door is a deflected part of the cargo hold floor and a part of the cargo hold door. The aircraft cargo bridge door can be lowered to the horizontal position or zero position of the cargo hold floor, to the ground or fixed in any intermediate position below the horizontal position.

[0003] When in the closed position, the cargo bridge door needs to be locked. Traditional cargo bridge door locks use a lock hook and lock seat, the matching gap cannot be adjusted, and the workmanship is poor; there is no anti-jamming measure and the reliability is poor. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an anti-stuck eccentric hook lock structure, which has convenient locking clearance adjustment, can prevent stuck and has high reliability.

[0005] The technical solution of the utility model is as follows:

[0006] An anti-jamming eccentric hook lock structure comprises a lock hook, a lock shaft, an eccentric wheel and a ring. A lock support is fixed on the aircraft floor, the lock shaft is rotatably or fixedly mounted on the lock support, and a rotating and fixing device is provided between the lock shaft and the lock support; wherein the lock shaft is an eccentric shaft, and the eccentric wheel of the lock shaft is covered with a freely rotating ring; the hook mouth of the lock hook is opposite to the eccentric wheel of the lock shaft, and the rotating structure controls the lock hook to rotate around the lock hook shaft and contact or disengage with the lock shaft.

[0007] Furthermore, the rotating and fixing device includes an octagonal boss, a stop washer and a lock shaft seat ear hole tooth. The octagonal boss is a boss structure formed by the part of the lock shaft extending out of the outside of the lock support. The inner hole of the stop washer is a ring structure matching the shape of the octagonal boss and is sleeved on the outside of the octagonal boss. The outer end of the stop washer is provided with at least one groove, and the lock shaft seat ear hole tooth is arranged on the outside of the lock support and matches the structure of the groove.

[0008] Furthermore, the stop washer is fixed to the outside of the octagonal boss through a detachable nut, and cooperates with the ear hole teeth of the lock shaft seat to lock the rotation of the lock shaft.

[0009] Furthermore, the angles of the groove and any edge of the octagonal boss are different.

[0010] Furthermore, there are at least three ferrules, which are arranged in an array on the eccentric wheel of the lock shaft.

[0011] Furthermore, it also includes a clamping plate, two clamping plates are combined to form a channel for the movement of the lock hook, the lock hook shaft passes through the two clamping plates, a through hole is provided on the upper part of the hook body of the lock hook, the lock hook shaft passes through the through hole of the lock hook, and the lock hook rotates around the lock hook shaft through the through hole.

[0012] Furthermore, the top end of the locking hook which is not the hook body is connected to the pull rod assembly via a rotating shaft.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model can be used for a cargo bridge door lock device. The middle part of the lock shaft is made into an eccentric wheel. By rotating the lock shaft, the gap between the cargo door lock hook and the lock shaft can be adjusted.

[0015] 2. The octagonal inner hole of the stop washer cooperates with the octagonal boss of the lock shaft. The four notches at the end of the stop washer have different angles from the octagonal surface. The lock shaft seat ear hole teeth are inserted into one of the grooves to achieve the purpose of stopping and controlling the clearance.

[0016] 3. The ferrule can prevent jamming by freely rotating with the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the locking device structure;

[0018] Figure 2 is a schematic diagram of the locking device structure;

[0019] Figure 3 This is the appearance diagram of the lock shaft;

[0020] Figure 4 This is a schematic diagram of the lock shaft seat ear hole teeth;

[0021] Among them: 1. lock shaft seat, 2. splint, 3. pull rod assembly, 4. lock shaft, 5. nut, 6. lock hook shaft, 7. lock hook, 8. ring, 9. stop washer, 10. floor, 11. octagonal boss, 12. eccentric wheel, 13. lock shaft seat ear hole teeth. DETAILED DESCRIPTION

[0022] This section is an embodiment of the utility model, which is used to explain and illustrate the technical solution of the utility model. In the absence of conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other.

[0023] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the orientations or positional relationships of the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or a point connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0025] Embodiment 1:

[0026] An anti-jamming eccentric hook lock structure comprises a lock hook 7, a lock shaft 4, an eccentric wheel 12 and a ring 8. A lock support 1 is fixed on an aircraft floor 10. The lock shaft 4 is rotatably or fixedly mounted on the lock support 1. A rotating and fixing device is provided between the lock shaft 4 and the lock support 1. The lock shaft 4 is an eccentric shaft. The eccentric wheel 12 of the lock shaft 4 is covered with a freely rotating ring 8. The hook mouth of the lock hook 7 is opposite to the eccentric wheel 12 of the lock shaft 4. The rotating structure controls the lock hook 7 to rotate around the lock hook shaft 6 and to contact or disengage with the lock shaft 4.

[0027] The rotating and fixing device includes an octagonal boss 11, a stop washer 9 and a lock shaft seat ear hole tooth 13. The octagonal boss 11 is a boss structure formed by the part of the lock shaft 4 extending out of the outside of the lock support 1. The inner hole of the stop washer 9 is a ring structure matching the shape of the octagonal boss 11 and is sleeved on the outside of the octagonal boss 11. The outer end of the stop washer 9 is provided with at least one groove, and the lock shaft seat ear hole tooth 13 is arranged on the outside of the lock support 1 and matches the structure of the groove.

[0028] The stop washer 9 is fixed to the outside of the octagonal boss 11 through a detachable nut 5, and cooperates with the lock shaft seat ear hole teeth 13 to lock the rotation of the lock shaft 4.

[0029] The angles of the groove and any edge of the octagonal boss 11 are different.

[0030] There are at least three ferrules 8 , which are arranged in an array at the eccentric wheel 12 of the lock shaft 4 .

[0031] It also includes a clamping plate 2, two clamping plates 2 are combined to form a channel for the movement of the lock hook 7, the lock hook shaft 6 passes through the two clamping plates 2, a through hole is provided on the upper part of the hook body of the lock hook 7, the lock hook shaft 6 passes through the through hole of the lock hook 7, and the lock hook 7 rotates around the lock hook shaft 6 through the through hole.

[0032] The top non-hook end of the locking hook 7 is connected to the pull rod assembly 3 via a rotating shaft.

[0033] Embodiment 2:

[0034] In order to ensure the adjustment of the lock gap between the cargo door lock hook and the lock shaft, the middle part of the lock shaft is made into an eccentric wheel form; the lock shaft is stopped by two stop washers and a nut, the stop washer is provided with an octagonal inner hole, and the stop washer is used to put the stop washer on the octagonal boss of the shaft, four grooves are provided on the end of the stop washer, and the lock shaft seat ear hole teeth are inserted into one of the grooves; four freely rotating rings are mounted on the lock shaft, and the rings can achieve the purpose of preventing jamming by freely rotating with the shaft.

[0035] Specifically, in order to ensure the adjustment of the gap between the cargo door lock structure and the lock shaft, the middle part of the lock shaft 4 is made into an eccentric wheel 12, and its eccentricity is 3-4 mm.

[0036] After the lock shaft 4 is installed in the lock support 1, it is stopped by two stop washers 9 and a nut 5. The stop washer 9 has an octagonal inner hole, which is used to sleeve the stop washer 9 on the octagonal boss 11 of the shaft; the end of the stop washer 9 has four grooves with different angles to the octagonal surface. The lock shaft seat ear hole tooth 13 is inserted into one of the grooves. Four freely rotating ferrules 8 are sleeved on the lock shaft.

[0037] The lock hook 7 is guided by the clamp plate 2 and driven by the pull rod assembly 3 to rotate around the lock hook shaft 6 and contact the ring 8 to achieve the locking purpose. The freely rotating ring achieves the purpose of preventing jamming by freely rotating with the shaft.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the utility model, and these modifications or substitutions should be included in the protection scope of the utility model.

Claims

1. An anti-stuck eccentric hook lock structure, characterized in that: The invention comprises a lock hook (7), a lock shaft (4), an eccentric wheel (12) and a ring (8); a lock support (1) is fixed on an aircraft floor (10); the lock shaft (4) is rotatably or fixedly mounted on the lock support (1); a rotation and fixing device is provided between the lock shaft (4) and the lock support (1); wherein the lock shaft (4) is an eccentric shaft; the eccentric wheel (12) of the lock shaft (4) is covered with a freely rotatable ring (8); the hook mouth of the lock hook (7) is opposite to the eccentric wheel (12) of the lock shaft (4); and the rotation structure controls the lock hook (7) to rotate around the lock hook shaft (6) and to contact or separate from the lock shaft (4).

2. The anti-jamming eccentric hook lock structure according to claim 1, characterized in that: The rotating and fixing device comprises an octagonal boss (11), a stop washer (9) and a lock shaft seat ear hole tooth (13); the octagonal boss (11) is a boss structure formed by the portion of the lock shaft (4) extending out of the outer side of the lock support (1); the inner hole of the stop washer (9) is a ring structure matching the outer shape of the octagonal boss (11) and is sleeved outside the octagonal boss (11); the outer end of the stop washer (9) is provided with at least one groove; the lock shaft seat ear hole tooth (13) is arranged on the outer side of the lock support (1) and matches the structure of the groove.

3. The anti-jamming eccentric hook lock structure according to claim 2, characterized in that: The stop washer (9) is fixed to the outside of the octagonal boss (11) through a detachable nut (5), and cooperates with the lock shaft seat ear hole teeth (13) to lock the rotation of the lock shaft (4).

4. The anti-jamming eccentric hook lock structure according to claim 2, characterized in that: The angles of the groove and any edge of the octagonal boss (11) are different.

5. The anti-jamming eccentric hook lock structure according to claim 1, characterized in that: There are at least three ferrules (8), which are arranged in an array at the eccentric wheel (12) of the lock shaft (4).

6. The anti-jamming eccentric hook lock structure according to claim 1, characterized in that: It also comprises a clamping plate (2), two clamping plates (2) are combined to form a channel for the lock hook (7) to move, the lock hook shaft (6) passes through the two clamping plates (2), a through hole is provided on the upper part of the hook body of the lock hook (7), the lock hook shaft (6) passes through the through hole of the lock hook (7), and the lock hook (7) rotates around the lock hook shaft (6) through the through hole.

7. The anti-jamming eccentric hook lock structure according to claim 6, characterized in that: The top end of the locking hook (7) which is not the hook body is connected to the pull rod assembly (3) via a rotating shaft.

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