CN214403140U

CN214403140U - But articulated connection structure of radial adjustment

Info

Publication number: CN214403140U
Application number: CN202023042873.9U
Authority: CN
Inventors: 李忠霖; 马岩; 杨炎通
Original assignee: AVIC Sac Commercial Aircraft Co Ltd
Current assignee: AVIC Sac Commercial Aircraft Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-10-15
Anticipated expiration: 2030-12-17

Abstract

The utility model belongs to aircraft mechanism design field discloses a but articulated connection structure of radial adjustment, by with hatch door structure fixed connection's support, with the articulated crank of being connected of support, the round pin axle of connecting crank and support, lock washer, centre gripping gasket, centre gripping sleeve, auto-lock nut, split pin and hexagon nut constitute. The pin shaft is used for connecting the support and the crank in a hinged mode through a hexagon nut, a locking gasket, a clamping sleeve, a self-locking nut and a cotter pin. And a front flange bushing and a rear flange bushing are respectively pressed on two sides of the inner hole of the crank. The structure can realize the radial position adjustment of the articulated kinematic pair, solves the problem of installation and adjustment of the mechanism, and can be widely applied to the design of the cabin door mechanism.

Description

But articulated connection structure of radial adjustment

Technical Field

The utility model relates to an aircraft structural design field, concretely relates to be applied to aircraft hatch door, can realize the connection structure of the radial direction adjustment of articulated motion pair.

Background

In aircraft door design, hinged connections are very widely used. The connecting pieces such as connecting rods, cranks and shafts which are commonly used in mechanical connection are mostly connected with other machine components in an articulated mode. For the cabin door mechanism, due to the accumulation of part manufacturing errors and product assembly errors, adjustment measures need to be designed so as to ensure the assembly feasibility and the movement precision of the whole mechanism. Currently, the installation and adjustment of the whole mechanism are mostly realized by adjusting the length of connecting rod parts. However, due to the limitation of the movement space or the requirement of bearing, the link member is often difficult to design into a straight rod with adjustable length, which brings difficulty to the installation and adjustment of the mechanism.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a connection structure that can realize the radial direction adjustment of articulated connection kinematic pair, through this connection structure's radial adjustment function, can realize the high-efficient installation adjustment of mechanism, solved the assembly adjustment problem that can't adopt the connecting rod to carry out the mechanism of installation adjustment, improved the installation adjustment efficiency of mechanism.

For solving the above problems, the specific technical scheme of the utility model is as follows: a hinged connection structure capable of being adjusted in the radial direction comprises a support fixedly connected with a cabin door structure, a crank hinged with the support, a pin shaft, a locking gasket, a clamping sleeve, a self-locking nut, a cotter pin and a hexagon nut; the pin shaft hinges the support and the crank together through a hexagon nut, a locking gasket, a clamping sleeve, a self-locking nut and a cotter pin; a front flange bushing and a rear flange bushing are respectively pressed on two sides of the inner hole of the crank;

the pin shaft is divided into three sections, namely a front section pin shaft, a middle section pin shaft and a rear section pin shaft, wherein the axes of the front section pin shaft and the rear section pin shaft are consistent, and the axis of the middle section pin shaft has an eccentric amount relative to the axes of the front section pin shaft and the rear section pin shaft; the front-section pin shaft is provided with an external thread structure and a locking groove structure and is connected with the hexagon nut through an external thread; the rear section pin shaft is provided with an external thread structure and is matched with the self-locking nut through threads; a front shaft shoulder structure is arranged in the butt joint area of the front section pin shaft and the middle section pin shaft; a rear shaft shoulder structure is arranged in the butt joint area of the middle section pin shaft and the rear section pin shaft; the front shoulder structure contacts the front flange bushing and the clamping pad is clamped against the rear shoulder structure.

The support adopts a double-fork ear form and is respectively a front fork ear and a rear fork ear; the front fork ear and the rear fork ear are respectively provided with a front lining and a rear lining in a pressing way, and the front fork ear is provided with a groove structure.

The clamping sleeve is arranged in the rear bushing, and the self-locking nut clamps the clamping gasket and the clamping sleeve on the rear shaft shoulder structure; the front section pin shaft is arranged in the front bushing, and the crank is arranged between the front shaft shoulder structure and the clamping gasket.

The locking gasket is provided with boss structures, the number of the boss structures is consistent with that of the groove structures, and the boss structures and the groove structures are meshed and connected; the locking gasket is provided with clamping structures, the number of the clamping structures is consistent with that of the locking grooves, and the clamping structures and the locking grooves are meshed and connected.

The utility model discloses have following advantage and beneficial effect:

1. the radial position adjustment of the hinged kinematic pair can be realized, the problem of installation adjustment of the mechanism is solved, and the device not only can be used for installation adjustment of the self mechanism of the cabin door, but also can be applied to position adjustment of the cabin door relative to the mouth frame structure;

2. the hinge joint structure is suitable for various hinge joint structures, high in universality and high in popularization and application value.

Drawings

Fig. 1 is a schematic view of a radially adjustable hinge connection.

Fig. 2 is an exploded view of an assembly of a radially adjustable hinged connection.

Fig. 3 is a cross-sectional view of a radially adjustable hinge connection.

Fig. 4 is a schematic view of a radially adjustable locking washer of a hinged connection.

In the figure: 1, a support; 2, a crank; 3 front flange bushing; 4 rear flange bushing; 5, a pin shaft; 6, locking a gasket; 7 clamping the gasket; 8 clamping the sleeve; 9 self-locking nut; 10 split pins; 11 a hexagonal nut; 12 front fork ear; 13 rear fork ear; 14 a front bushing; 15 a rear bushing; 16, a groove structure; 17 front section pin shaft; 18 middle section pin shaft; 19 a rear section pin shaft; 20 locking groove structure; 21 a front shoulder structure; 22 rear shoulder structure; 23, a boss structure; 24 to clamp the structure.

Detailed Description

As shown in fig. 1 to 4, a hinge connection structure capable of radial adjustment comprises a support 1 fixedly connected with a cabin door structure, a crank 2 hinged with the support 1, a pin 5, a lock washer 6, a clamping washer 7, a clamping sleeve 8, a self-locking nut 9, a cotter pin 10 and a hexagon nut 11. The pin shaft 5 is used for connecting the support 1 and the crank 2 together in a hinged mode through a hexagonal nut 11, a locking gasket 6, a clamping gasket 7, a clamping sleeve 8, a self-locking nut 9 and a cotter pin 10. The two sides of the inner hole of the crank 2 are respectively provided with a front flange bush 3 and a rear flange bush 4 in a pressing way.

The support adopts a double-fork ear form, namely a front fork ear 12 and a rear fork ear 13. The front fork ear 12 and the rear fork ear 13 are respectively provided with a front bushing 14 and a rear bushing 15 in a pressing manner, and the front fork ear 12 is provided with a groove structure 16.

The pin 5 is divided into three sections, namely a front section pin 17, a middle section pin 18 and a rear section pin 19, wherein the axes of the front section pin 17 and the rear section pin 19 are consistent, and the axis of the middle section pin 18 has a certain eccentric amount relative to the axes of the front section pin 17 and the rear section pin 19. The front section pin shaft 17 is provided with an external thread structure and a locking groove structure 20, the front section pin shaft 17 is connected with the hexagon nut 11 through an external thread, the rear section pin shaft 19 is provided with an external thread structure, and the rear section pin shaft 19 is matched with the self-locking nut 9 through a thread. A front shaft shoulder structure 21 is designed in the butt joint area of the front section pin shaft 17 and the middle section pin shaft 18. A rear shoulder structure 22 is designed in the butt joint area of the middle section pin shaft 18 and the rear section pin shaft 19. The clamping sleeve 8 is fitted inside the rear bushing 15 and the self-locking nut 9 clamps the clamping washer 7 and the clamping sleeve 8 to the rear shoulder structure 22. The front section pin 17 is fitted inside the front bushing 14 and the crank 2 is arranged between the front shoulder 21 and the clamping washer 7.

The locking gasket 6 is provided with boss structures 23, the number of the boss structures 23 is the same as that of the groove structures 16, and the boss structures and the groove structures are meshed and connected. The locking gasket 6 is provided with clamping structures 24, the number of the clamping structures 24 is the same as that of the locking groove structures 20, and the clamping structures and the locking groove structures are meshed and connected.

When in specific use: the crank 2 and the clamping washer 7 are placed inside the support 1 and the pin 5 is inserted from the front side until the front shoulder 21 comes into contact with the front flange bushing 3. The clamping sleeve 8, the self-locking nut 9 and the cotter pin 10 are installed to clamp the clamping washer 7 on the rear shaft shoulder structure 22. The axial position of the pin 5 is adjusted and the locking washer 6 and the hexagon nut 11 are installed to ensure that a certain amount of clearance exists between the front bushing 14 and the front flange bushing 3. After the preliminary adjustment is completed, the hexagon nut 11 is detached, the locking gasket 6 is rotated as required, the locking gasket 6 drives the pin shaft 5 to rotate, the middle pin shaft 18 of the pin shaft 5 drives the crank 2 to move along the radial direction, after the adjustment is completed, the locking gasket 6 is arranged in the groove structure 16, the hexagon nut 11 is screwed again, a certain amount of clearance value is ensured to exist between the front bushing 14 and the front flange bushing 3, and the radial adjustment of the hinge structure at the hinge point is completed.

Claims

1. A hinged connection structure capable of being adjusted in the radial direction is characterized by comprising a support (1) fixedly connected with a cabin door structure, a crank (2) hinged with the support (1), a pin shaft (5), a locking gasket (6), a clamping gasket (7), a clamping sleeve (8), a self-locking nut (9), a cotter pin (10) and a hexagon nut (11); the pin shaft (5) is used for hinging the support (1) and the crank (2) together through a hexagon nut (11), a locking gasket (6), a clamping gasket (7), a clamping sleeve (8), a self-locking nut (9) and a cotter pin (10); a front flange bushing (3) and a rear flange bushing (4) are respectively pressed on two sides of an inner hole of the crank (2);

the pin shaft (5) is divided into three sections, namely a front section pin shaft (17), a middle section pin shaft (18) and a rear section pin shaft (19), wherein the axes of the front section pin shaft (17) and the rear section pin shaft (19) are consistent, and the axis of the middle section pin shaft (18) has an eccentric amount relative to the axes of the front section pin shaft and the rear section pin shaft;

an external thread structure and a locking groove structure (20) are arranged on the front section pin shaft (17), and the front section pin shaft (17) is connected with the hexagon nut (11) through the external thread; the rear section pin shaft (19) is provided with an external thread structure, and the rear section pin shaft (19) is matched with the self-locking nut (9) through threads; a front shaft shoulder structure (21) is arranged in the butt joint area of the front section pin shaft (17) and the middle section pin shaft (18); a rear shaft shoulder structure (22) is arranged in the butt joint area of the middle section pin shaft (18) and the rear section pin shaft (19); the front shaft shoulder structure (21) is contacted with the front flange bushing (3), and the clamping gasket (7) is clamped on the rear shaft shoulder structure (22).

2. A radially adjustable articulated connection according to claim 1, characterized in that the support (1) takes the form of a double fork lug, a front fork lug (12) and a rear fork lug (13), respectively; the front fork ear (12) and the rear fork ear (13) are respectively provided with a front bushing (14) and a rear bushing (15) in a pressing way, and the front fork ear (12) is provided with a groove structure (16).

3. Radially adjustable articulated connection according to claim 2, wherein the clamping sleeve (8) is fitted inside the rear bushing (15), the self-locking nut (9) clamping the clamping washer (7) and the clamping sleeve (8) on the rear shoulder (22); the front section pin shaft (17) is arranged in the front bushing (14), and the crank (2) is arranged between the front shaft shoulder structure (21) and the clamping gasket (7).

4. A radially adjustable hinge connection according to claim 2, wherein said locking washer (6) is provided with a number of projections (23) corresponding to the number of recesses (16) and engaging therewith; the locking gasket (6) is provided with clamping structures (24), the number of the clamping structures (24) is consistent with that of the locking groove structures (20), and the clamping structures and the locking groove structures are meshed and connected.