CN202483309U

CN202483309U - Adjustable latch hook mechanism

Info

Publication number: CN202483309U
Application number: CN2011205210563U
Authority: CN
Inventors: 刘敏; 王强; 吴自珍; 赵海超; 孔令军; 黄志军; 王亮; 张国颂
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2011-12-14
Filing date: 2011-12-14
Publication date: 2012-10-10
Anticipated expiration: 2021-12-14

Abstract

The utility model discloses an adjustable latch hook mechanism which comprises a lock sleeve and a lock hook connected with the lock sleeve. The adjustable latch hook mechanism is characterized in that regulating cams are arranged on the inner side of a support of the lock sleeve, an adjusting bushing and a bushing are sequentially sleeved on the middle section of an adjustable pin roll from inside to outside, two ends of the adjustable pin roll are arranged in the regulating cam A and a support hole, the regulating cam A is connected with a key slot arranged on the adjustable pin roll through a key and is fixedly connected with the key slot, one end of the adjustable bushing is provided with a bulged edge, the bulged edge is fixedly connected with the regulating cam B, a pin rod of the regulating pin is arranged in the support, and the regulating rod is positioned in regulating grooves of the regulating cam A and the regulating cam B. According to the utility model, two sets of regulating mechanism can be used for regulating the adjustable pin roll and the adjustable bushing with large range, the installing precision allowed in the latch hook structure can accord with the common installing requirement, the installing manufacturability of a latch hook system is well improved, and the rejection rate is lowered.

Description

A kind of adjustable latch hook mechanism

Technical field

The utility model relates to latch hook mechanism, specifically is used for the mechanism of the latch hook of the large-scale hatch door of aircraft, particularly a kind of adjustable latch hook mechanism.

Background technology

Aircraft often adopts hinge-latch hook structure in outward opening large-scale hatch door, promptly the upper end adopts hinge to connect, so that rotarily open hatch door; Latch hook mechanism is adopted in the lower end, so that transmitting portions shearing and inside and outside differential pressure.Like Fig. 1, the bearing pin and the lining 2 of latch hook mechanism center shafting commonly used are made up of cylindrical shaft and plain bushing 2, can't adjust with the applying degree of latch hook 3.In the hatch door generally by 3 above latch hook 3 power transmissions; If can't adjust the applying degree of latch hook 3 and axle system, stressed then inhomogeneous between each latch hook 3 causes latch hook 3 structural damages easily; And installation accuracy requires highly, occurs the big and inefficacy scrap products in gap easily.

Summary of the invention

The purpose of the utility model is: propose the new adjustable shaft architecture of a cover, so that latch hook is adjusted its applying degree after installing aboard, make each latch hook stressed evenly, improve the reliability and the durability of latch hook system; And can reduce the required precision in the installation, optimize the mounting process property of latch hook.

The technical scheme of the utility model: a kind of adjustable latch hook mechanism; Comprise lock tube and the latch hook that is connected with lock tube, adjustment cam A, B are equipped with in the bearing inboard of lock tube, and adjustable bearing pin stage casing is set with adjustable buss and plain bushing from inside to outside successively; Two ends are installed in adjustment cam A, B and the bearing hole; The keyway of adjustment cam A through key and the design of adjustable bearing pin is connected and connects firmly, and an end of adjustable buss is provided with chimb, and chimb and adjustment cam B connect firmly; The pin rod of regulating pin is installed in the bearing, and its adjusting rod is positioned at the regulating tank of adjustment cam A, B.

Said adjustable bearing pin is an eccentric shaft.

Said adjustable buss is an eccentric bush.

The utility model has the advantages that: adjustable bearing pin and adjustable buss are adjusted respectively through two cover guiding mechanisms; Adjusting range is big; The installation accuracy that the latch hook structure allows can well have been improved the mounting process property of latch hook system by common installation requirement, reduces scrappage.

Description of drawings

Fig. 1 is existing latch hook structural scheme of mechanism.

Fig. 2 is the adjustable latch hook mechanism structure sketch map of the utility model.

Fig. 3 be among Fig. 2 A-A to sectional view.

Fig. 4 is the latch hook sectional view of this usefulness new type of adjustable latch hook mechanism.

Fig. 5 is the lock tube structure chart of the adjustable latch hook of the utility model mechanism.

Fig. 6 is the adjustable pin axial adjustment structural scheme of mechanism of the adjustable latch hook of the utility model mechanism.

Fig. 7 is the adjustable buss guiding mechanism sketch map of the utility model latch hook mechanism.

Fig. 8 is the structural representation of adjustable bearing pin among Fig. 6.

Fig. 9 is the structural representation of adjustable buss among Fig. 7.

Figure 10 is that the utility model is regulated the Principles of Regulation sketch map of selling with adjustment cam A, B.

Among the figure: 1. adjustable bearing pin, 2. lining, 3. latch hook is 4. regulated pin, 5. adjustment cam A, 6. bearing, 7. adjustable buss, 8. key, 9. keyway, 10. adjustment cam B, 11, regulate the axle center, 12, the bearing pin axle center.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further, referring to Fig. 2 to Figure 10, a kind of adjustable latch hook mechanism; Comprise lock tube and the latch hook that is connected with lock tube 3, adjustment cam A5, B10 are equipped with in bearing 6 inboards of lock tube, and adjustable bearing pin 1 stage casing is set with adjustable buss 7 and lining 2 from inside to outside successively; Two ends are installed in adjustment cam A5, B10 and bearing 6 holes; The keyway 9 of adjustment cam A5 through

key

8 and 1 design of adjustable bearing pin is connected and connects firmly, and an end of adjustable buss 7 is provided with chimb, and chimb and adjustment cam B10 connect firmly; The pin rod of regulating pin 4 is installed in the bearing 6, and its adjusting rod is positioned at the regulating tank of adjustment cam A5, B10.

Said adjustable bearing pin 1 is an eccentric shaft.

Said adjustable buss 7 is an eccentric bush.

Embodiment: this mechanism mainly utilizes eccentric center principle to reach design object:

Utilize the eccentric cylinder of regulating pin 4 to drive adjustment cam A5, B10 rotation when rotated; And adjustment cam A5, B10 connect firmly with adjustable bearing pin 1, adjustable buss 7 respectively; So the anglec of rotation of adjustment cam A5, B10 and adjustable bearing pin 1, adjustable buss 7 anglecs of rotation are identical, and utilize the rotation of adjustable bearing pin 1 wobbler action and adjustable buss 7 to make the adjustable gaps between lining 2 and the latch hook 3.

Adjustable buss 7 and adjustable bearing pin 1 anglec of rotation are for regulating the adjustment angle of pin in the adjustable latch hook mechanism, and the eccentric throw size of regulating pin 4, adjustable buss 7 and adjustable bearing pin 1 is depended in the adjustment of lining 2 apart from size.

Be in course of adjustment, should be noted that the applying degree of latch hook 3 and lining 2, can be through visual or latch hook carried out forces testing.Through adjustment, the latch hook in all latch hook systems 3 get final product when suitable with lining 2 applying degree, accomplish and will regulate pin 4 after the adjustment and be fixed on the bearing 6, generally be to sell 4 and the interference fit secured adjusted pin 4 of bearing 6 through adjusting.After adjustable bearing pin 1 is fixed,, can be fixing, prevent rotation, thereby realize the function of this latch hook mechanism whole axle through reaction force.

Claims

1. adjustable latch hook mechanism; Comprise lock tube and the latch hook that is connected with lock tube (3); It is characterized in that adjustment cam A, B (5,10) are equipped with in the bearing of lock tube (6) inboard, adjustable bearing pin (1) stage casing is set with adjustable buss (7) and lining (2) from inside to outside successively; Two ends are installed in adjustment cam A, B (5,10) and bearing (6) hole; The keyway (9) of adjustment cam A (5) through the design of key (8) and adjustable bearing pin (1) is connected and connects firmly, and an end of adjustable buss (7) is provided with chimb, and chimb and adjustment cam B (10) connect firmly; The pin rod of regulating pin (4) is installed in the bearing (6), and its adjusting rod is positioned at the regulating tank of adjustment cam A, B (5,10).

2. adjustable latch hook according to claim 1 mechanism is characterized in that said adjustable bearing pin (1) is an eccentric shaft.

3. adjustable latch hook according to claim 1 mechanism is characterized in that said adjustable buss (7) is an eccentric bush.