CN114379769A

CN114379769A - Slat supporting and limiting device

Info

Publication number: CN114379769A
Application number: CN202210064967.0A
Authority: CN
Inventors: 林启洲; 周颖; 文丽鑫; 何志全; 王春梅; 董萌
Original assignee: Comac Shanghai Aircraft Design & Research Institute; Commercial Aircraft Corp of China Ltd
Current assignee: Comac Shanghai Aircraft Design & Research Institute; Commercial Aircraft Corp of China Ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-04-22
Anticipated expiration: 2042-01-20
Also published as: CN114379769B

Abstract

A slat support check device (1) comprising: the limiting piece comprises a limiting piece body (12, 22, 32), wherein the limiting piece body is provided with a first opening (123, 223, 323) and a second opening (124, 224, 324) extending through the limiting piece body along the vertical direction; the first opening (123, 223, 323) intersects the second opening (124, 224, 324); a bolt (11) insertable in the second opening (124, 224, 324); an insert (13) received in the first opening, the insert having a cross-section with a shape matching the shape of the cross-section of the first opening and having a third opening (133) therethrough for the bolt (11) to pass through; and at least one spacer (14a, 14b) provided between the head of the bolt (11) and the outer peripheral surface of the stopper body (12, 22, 32).

Description

Slat supporting and limiting device

Technical Field

The invention relates to a device for supporting a slat of an aircraft and limiting the displacement of the slat in the vertical direction in a zero position.

Background

When the airplane is in take-off, landing and endurance states, the wing surfaces of the slats can deform vertically due to the bearing of aerodynamic lift loads. Such vertical deformation may result in interference of the slat structure with the fixed leading edge skin, which may result in structural damage. There is therefore a need for a device that supports the slat after retraction and thereby limits its displacement in the vertical direction.

From CN 209366447U (published: 2019, 9, 10), a leading-edge slat supporting mechanism based on rack-and-pinion driving is known, which includes a roller, a fan-shaped limit stop of a gear shaft, a driving gear, and other components, the whole set of mechanism is supported by a fixed leading edge, and a sliding rail is arranged inside the fixed leading edge. The supporting mechanism is mainly used for providing a supporting platform under a slat gear rack driving structure, and the fan-shaped limit stop is mainly used for limiting the movement range of the sliding rail, but cannot limit the folded slat.

A component mounting structure on a slat support rib is known from CN 204300050U (published: 2015, 4, 29), and includes a support rib, a component, a stud, a washer, a self-locking nut, a cotter pin, and the like. The part mounting structure is an auxiliary mounting device, has the main function of mounting a support rib part, but cannot realize the function of limiting after the vertical deformation of the slat.

Therefore, it is still desirable to provide a device for supporting the slat and limiting the displacement thereof in the vertical direction.

Disclosure of Invention

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a slat support and limit device that can support a slat and further limit the displacement of the slat in the vertical direction at the zero position.

In order to solve the technical problem, the slat supporting and limiting device comprises:

the locating part body, the locating part body has:

the first opening is provided with a first opening,

the second opening extends through the limiting piece body along the vertical direction;

wherein the first opening intersects the second opening;

a bolt insertable in the second opening;

an insert that can be received in the first opening and that has a cross-section whose shape matches that of the first opening provided in the stopper body,

wherein the insert is provided with a through third opening for the bolt to pass through, and the inner peripheral surface of the third opening is provided with threads; and

the gasket is sleeved on the bolt and is arranged between the head of the bolt and the peripheral surface of the limiting part body.

When the slat supporting and limiting device is used, the slat supporting and limiting device can be adjusted by inserting the bolt through the second opening of the limiting member body and the third opening of the inserting piece accommodated in the first opening, so that the device is in contact with the fixed leading edge, the slat airfoil is supported in the vertical direction by the contact of the device with the slat airfoil and the fixed leading edge, and the locking of the slat supporting and limiting device can be realized by further screwing the bolt.

Specifically, the slat support and limit device of the present invention provides a reaction force to deformation of the slat face in the vertical direction by at least one shim included therein, and limits displacement of the slat face in the vertical direction by elastic deformation of the at least one shim after being pressed, specifically, the limit of elastic deformation thereof.

Therefore, through elastic deformation of the gasket, the slat supporting and limiting device can realize self-adaptive adjustment of the gap. Furthermore, the number of the gaskets included in the slat supporting and limiting device and the thickness of the selected gaskets can be increased or decreased according to the specific applicable model and the spatial position relationship between the slat and the fixed leading edge, so that the slat supporting and limiting device can perform stepless adjustment on the actual gap between the slat and the fixed leading edge, and the slat supporting and limiting device has strong adaptability.

Specifically, the limiting member body of the slat supporting and limiting device of the present invention includes a limiting member head and a limiting member base. The stop member base is preferably provided with mounting apertures for passage therethrough by fasteners to securely attach the slat support stop arrangement of the present invention to the slat airfoil. The limiter head may then optionally be in the form of an overhanging crank and may be inserted into a corresponding recess provided in the slat airfoil.

In particular, the stop is in the form of a single piece. The specific shape of the head part of the limiting part is obtained by processing according to the space between the slat and the fixed leading edge of the model for which the slat supporting and limiting device is suitable and the specific installation position. The slat supporting and limiting device has strong adaptability to different machine types.

Optionally, the stopper head is prismatic with a rectangular cross-section. A cross section is to be understood here as a section which is in an orthogonal relationship (or perpendicular) to the general direction of extension of the head of the stop. At this time, the sectional shape of the recess into which the head of the stopper is inserted should be set to be rectangular corresponding to the shape of the cross section.

Alternatively, the stopper head may be in the shape of a cylinder with a circular cross-section. At this time, the recess into which the head of the position-limiting member is inserted should be a corresponding cylindrical or semi-cylindrical groove for accommodating the head of the position-limiting member therein.

Optionally, the base of the stop is in the form of a chamfered rectangle in cross-section to facilitate handling by the machining and installation personnel.

Specifically, a first opening and a second opening are provided in the stopper head. The first opening is a non-through opening, the second opening is a through opening, and an intersection portion exists between the first opening and the second opening.

Preferably, the first opening is disposed in a heading direction and the second opening extends in a vertical direction, so that the first opening and the second opening are orthogonal in their respective extension and present an intersection.

The extending direction of the first opening is parallel to the extending direction of the head of the limiting piece.

Preferably, the extending direction of the first opening coincides with the extending direction of the head of the stopper.

The particular shape of the first opening of the nose of the stop member corresponds to the shape of the insert included in the slat support stop arrangement. The insert is a part obtained from a blank by a separate machining, for example by a turning process, and the slat support stop according to the invention may be used to replace an insert fitted in the first opening individually for different applications without having to replace the entire support stop, in particular the stop.

The insert is fitted to the bolt by means of, for example, an internal thread.

Optionally, the cross section of the first opening of the head of the position-limiting member is rectangular, and here, the cross section refers to a section orthogonal to the extending direction of the first opening. In this case, the cross-section of the insert should also be rectangular in shape.

Alternatively, the cross-section of the first opening may be circular, and then the shape of the cross-section of the insert should also correspond to a circle, and the diameters of both should be approximately equal.

The cross-section of the first opening of the head of the retainer and the cross-section of the insert may also be of other shapes, such as elliptical, oval, trapezoidal, etc., as long as they both are form-fit to each other and the cross-sectional shape of the insert is such that it is easily obtainable by a separate machining.

The cross-section of the stopper head may likewise be of other shapes, for example elliptical, oval, trapezoidal, triangular, polygonal, etc., which should be adapted to the cross-sectional shape of the recess into which the stopper head is to be inserted.

Preferably, a non-through fourth opening may be further opened on the outer circumferential surface of the stopper body, specifically, on a portion where the stopper head transitions to the stopper base, and may serve as a connecting rib. In particular, the convex portion provided on the slat airfoil may be inserted into the fourth opening described above, thereby further enhancing the connection between the slat support and stop arrangement of the present invention and the slat of the aircraft.

In one non-limiting embodiment, the insert is substantially cylindrical and is obtained by machining from a cylindrical blank. The insert comprises a first half part and a second half part which are integrally connected, a third opening penetrates and extends through the first half part and the second half part along the radial direction, threads are arranged in the third opening, and a bolt is matched with the threads in the third opening in a rotating mode to realize connection and further realize locking of the seam wing supporting and limiting device.

The slat supporting and limiting device provided by the invention limits the displacement of the slat in the vertical direction at the zero position under pneumatic load through adjusting the gap.

Compared with the prior art, the structure of the slat supporting and limiting device is simpler, is easy to process and is convenient to install. In routine airline maintenance, if only the insert in the slat support stop creates internal wear due to the cooperation with the bolts, then maintenance can be completed by replacing only the insert without replacing the entire device, which further improves the efficiency of routine maintenance and reduces the cost of repair and replacement.

Additional features and advantages are set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the claims, as well as the appended drawings.

Drawings

With reference to the above purposes, the technical characteristics of the invention are clearly described in the claims that follow, and the advantages thereof are apparent from the following detailed description, with reference to the accompanying drawings, which illustrate by way of example a preferred embodiment of the invention, without limiting the scope of the inventive concept, in which:

FIG. 1 shows an exploded perspective view of a preferred embodiment of the slat support stop arrangement of the present invention;

FIG. 2 shows a longitudinal cross-sectional view of a limiter body of the slat support limiter device shown in FIG. 1;

FIG. 3 shows a perspective view of a limiter body of a second embodiment of a slat support limiting device of the present invention; and

fig. 4 shows a perspective view of a limiter body of a third embodiment of a slat support limiter arrangement of the present invention.

List of reference numerals:

1 slat supports stop device

11 bolt

12. 22, 32 position limiting part body

121. 221, 321 stopper head

122. 222, 322 stopper base

123. 223, 323 first opening

124. 224, 324 second opening

125. 225, 325 mounting hole

226 fourth opening

13 insert

131 first half

132 second half

133 third opening

14a, 14b spacers.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims. For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.

A slat support stop arrangement generally given the reference numeral 1 is described below with reference to fig. 1 to 4.

Fig. 1 shows an exploded perspective view of a preferred embodiment of a slat support stop 1.

As shown in fig. 1, the slat support restrictor 1 includes a bolt 11, a restrictor body 12, an insert 13, and two

shims

14a and 14 b.

In the illustrated embodiment, the limiter body 12 includes a limiter head 121 and a limiter base 122 in the shape of an overhanging crank. The stopper body 12 is manufactured in one piece, for example, by casting.

As shown, the stopper body 12 is provided with a mounting hole 125 on the base portion 122 thereof.

When the slat support restrictor device 1 is used, the restrictor body 12 is attached to a slat (not shown in the drawings) of an aircraft by means of fasteners passing through the mounting holes 125. In the illustrated embodiment, four mounting holes 125 are provided for the design configuration of the approximately chamfered rectangular cross-section of the limiter base 122, only two of which are visible in the figures. However, it is conceivable that the number of mounting holes provided in the stopper base may be increased or decreased according to the shape of the cross section, as the shape of the cross section of the stopper base 122 changes.

In the embodiment shown in fig. 1, the head 121 of the limiter body 12 is a prism having a rectangular cross section. However, the limiter head 121 may have other cross-sectional shapes in the second and third embodiments of the slat support limiter 1 and in other embodiments of the slat support limiter 1 which will be explained below.

Fig. 2 shows a cross-sectional view of the stopper body in the longitudinal direction (heading direction).

A first opening 123 extending in the heading direction and a second opening 124 extending in the vertical direction are opened in the stopper head 121. The first opening 123 is a non-through opening, and the second opening 124 is a through opening passing through the stopper head 121. The central axis of the first opening 123 and the central axis of the second opening 124 are orthogonal to each other. The bolt 11 of the slat support stop 1 is inserted through the second opening 124.

The non-through first opening 123 is provided for receiving the insert 13, the overall shape of the first opening 123 matching the shape of the insert 13, in particular the cross-sectional shape of the first opening 123 is adapted to the cross-sectional shape of the insert 13. Since the insert 13 is often obtained from a blank that is separately machined and therefore may have a cross-sectional shape other than the circular shape illustrated, the cross-section of the first opening 123 may have other radii or have other shapes.

In the embodiment shown in fig. 1, the insert 13 is separately machined from a cylindrical blank. The insert 13 has a first half 131 and a second half 132 integrally connected, and the first half 131 and the second half 132 are provided with a third opening 133 extending through the respective halves in the radial direction for the bolt 11 to be inserted therethrough, and the third opening 133 is provided on an inner surface thereof with an internal thread threadedly coupled with a portion of the bolt 11 on which the external thread is provided.

In the illustrated embodiment, two

spacers

14a and 14b are provided between the head of the bolt 11 and the outer periphery of the limiter body 121, for adjusting the distance between the bottom of the bolt 11 and the fixed leading edge by means of their elastic deformation, and for limiting the deformation of the slat in the vertical direction at the zero position by the restoring force of the elastic deformation.

Although two

spacers

14a, 14b are shown in fig. 1, more or fewer spacers may be provided, or spacers having other thicknesses, e.g., thinner or thicker, or other deformable spacers may be used, depending on the model of the aircraft, the particular space conditions.

The

pads

14a, 14b may be metallic or non-metallic. Other examples of spacers that may be used include bushings or special spacers. The spacer, such as a washer, should be able to withstand the tightening force of the bolt 11 without breaking.

When using this slat to support stop device 1, specifically include the following step:

1) mounting the limiter body 12 to a slat intermediate position by means of at least one fastener passing through the mounting aperture 125;

2) mounting the insert 13 into the first opening 123 of the retainer body 12 and inserting the bolt 11 through the second opening 124 of the retainer body 12 and the third opening 133 of the insert 13;

3) the slat is retracted to a zero position, and the position of the bolt 11 in the vertical direction is adjusted from the lower part of the slat so that the bolt contacts a fixed leading edge (not shown in the figure);

4) lowering the slat, selecting a corresponding number of shims having an appropriate thickness according to the amount of extension of the bolt 11, and placing the selected

shims

14a, 14b between the head of the bolt 11 and the outer peripheral surface of the head 121 of the retainer and locking the insert 13 by rotating the bolt 11;

5) the slat is retracted and the gap between the bolt 11 and the fixed leading edge is measured.

Thus, during the lowering of the slat, the body 12 of the stop element, which is fixedly connected to the slat airfoil, can follow the movement of the slat airfoil, leaving contact with the fixed leading edge.

After the slat is stowed, the latch body 12 returns to contact with the fixed leading edge.

Thus, when the slat is deformed in the vertical direction. Because locating part body 12 fixed connection slat airfoil and through the contact of bolt 11 with fixed leading-edge, can realize supporting the slat airfoil especially along vertical direction to realize the limiting displacement to its vertical deformation.

Since the projection of the bolts 11 in step 3) above is a continuous linear quantity, stepless adjustment can be achieved by selecting a corresponding number and thickness of shims or other spacers, thereby better adapting to different models.

Second and third embodiments of the slat support restrictor 1 will be described with reference to fig. 3 and 4.

In the following description, reference numerals for identifying parts and components are increased by 1 in the first place in correspondence with those of the corresponding parts and components of the support and stop device 1 in the embodiment shown in fig. 1. Identical components and parts are continued with the same reference numerals.

Fig. 3 shows a limiter body 22 in a second embodiment of the slat support limiter device 1 of the present invention. The shape of the limiter head 221 of the limiter body 22 is different from the shape of the limiter head 121 of the limiter body 12 in the slat supporting and limiting device 1 shown in fig. 1, but is approximately cylindrical, and the cross section thereof is correspondingly circular.

When the slat supporting and spacing device 1 having the spacing member body 22 shown in fig. 3 is installed, approximately half of the cylindrical body of the spacing member head 221 is inserted into the recess correspondingly provided on the slat airfoil.

The stopper head 221 also has a non-through first opening 223 for receiving an insert and a through second opening 224 through which the bolt 11 is inserted.

In the illustrated embodiment, the first opening 223 has a rectangular cross-sectional shape, and the shape of the first opening 223 on the outer peripheral surface of the head portion of the retainer body 222 is adapted to extend along a cylindrical arc-shaped outer peripheral surface. Accordingly, the cross-sectional shape of the insert (not shown) inserted into the first opening 223 in this embodiment is also correspondingly rectangular. As already explained, the cross-sectional shape of the first opening and the shape of the insert are not limited to a specific shape, but they need to be matched to each other.

In this embodiment, the limiter body 22 is further provided with a fourth opening 226 at the transition portion from the limiter head 222 to the limiter base 221. This fourth opening 226 acts as a connecting rib for insertion of a correspondingly provided male portion on the slat airfoil. Due to this arrangement, the fourth opening may correspondingly have a different shape in other embodiments of the slat support stop 1.

In the embodiment shown in fig. 3, the limiter base 222 of the limiter body 22 is similar in shape to the limiter base 122 shown in fig. 1, and is also provided with four mounting holes 225, three of which are visible in fig. 3. For clarity, other portions of the retainer body 22, including the retainer base 222, will not be discussed further herein.

Fig. 4 shows a limiter body 32 of a third embodiment of a slat support limiter 1.

The stopper body 32 includes a stopper head 321 and a stopper base 322. The shape of the stopper body 321 is similar to that of the stopper body 121 shown in fig. 1, and is a prism with a rectangular cross section, but the shape of the first opening 323 provided therein for accommodating an insert is different from that of the first opening 123 in the stopper body 121 shown in fig. 1. Specifically, the cross section of the first opening 323 is rectangular instead of circular, i.e., the first opening 323 is a blind hole having a rectangular cross section and extending in the heading direction in the illustrated embodiment. At this time, the cross-sectional shape of the insert (not shown) also corresponds to a rectangle.

In other embodiments, not shown, the length and width of the rectangular cross-section of the first opening may be increased or decreased corresponding to the size of the cross-section of the insert.

In the embodiment shown in fig. 4, the limiter base 322 of the limiter body 22 is the same shape as the limiter base 122 of fig. 1 and the limiter base 222 of fig. 3, and is also a chamfered rectangle with four mounting holes 325 provided therein, three of which are visible, for fasteners to be inserted therein to secure the limiter body 32 to the slat airfoil. Also for the sake of clarity, other portions of the retainer body 32, including the retainer base 322, are not explained in further detail.

Although the shape of the insert is described in the above embodiments, although only the substantially cylindrical insert 13 is shown in fig. 1, the present invention is not limited thereto, and the insert may be a rectangular parallelepiped or other shape.

Similarly, in the above-described embodiments, the cross-sectional shape of the non-through

first openings

123, 223, 323 provided in the stopper heads 121, 221, 321 of the

stopper bodies

12, 22, 32 for accommodating the insert 13 has been described, but the present invention is not limited thereto, and the shape of the first openings provided in the insert heads may be variously modified depending on the mounting position and the specific spatial relationship.

The present invention can freely combine the embodiments, or appropriately change or omit the embodiments within the scope thereof.

Claims

1. A slat support check device (1) comprising:

locating part body (12, 22, 32), seted up on the locating part body:

a first opening (123, 223, 323),

a second opening (124, 224, 324) extending through the retainer body (12, 22, 32) in a vertical direction;

wherein the first opening (123, 223, 323) intersects the second opening (124, 224, 324);

a bolt (11), the bolt (11) being inserted in the second opening (124, 224, 324);

an insert (13), the insert (13) being received in the first opening (124, 224, 324) and having a cross-section with a shape that matches a shape of a cross-section of the first opening,

wherein the insert (13) is provided with a third opening (133) extending through the insert for the bolt (11) to pass through, the third opening (133) being internally threaded; and

at least one spacer (14a, 14b), the at least one spacer (14a, 14b) being fitted over the bolt (11) between the head of the bolt and the outer peripheral surface of the stopper body (12, 22, 32).

2. The slat support and stop device (1) according to claim 1, wherein the stop body (12, 22, 32) comprises a stop head (121, 221, 321) and a stop base (122, 222, 322), wherein the first opening (123, 223, 323) and the second opening (124, 224, 324) are provided on the stop head (121, 221, 321).

3. The slat support check device (1) according to claim 2, wherein the first opening (123, 223, 323) is a non-through opening arranged in a heading direction, and an extension of the first opening (123, 223, 323) is orthogonal to an extension of the second opening (124, 224, 324).

4. The slat support stop (1) according to claim 3, wherein the cross-sectional shape of the first opening (123, 223, 323) is rectangular and the cross-section of the insert (13) is rectangular.

5. The slat support stop (1) according to claim 3, wherein the cross-sectional shape of the first opening (123, 223, 323) is circular and the cross-sectional shape of the insert (13) is circular.

6. The slat support and stop device (1) according to claim 4 or 5, characterized in that the stop member head (121, 221, 321) comprises a prismatic portion of rectangular cross-section which is insertable into a recess provided on a slat airfoil of an aircraft.

7. The slat support and stop device (1) according to claim 4 or 5, characterized in that the stop piece head (121, 221, 321) comprises a cylindrical portion with a circular cross-section which is insertable into a recess provided on the slat airfoil of an aircraft.

8. The slat support and stop device (1) according to claim 6, wherein a fourth opening (226) is further provided on the stop body, into which fourth opening a male portion on the slat airfoil can be inserted.

9. The slat support and stop device (1) according to claim 8, characterized in that the fourth opening (226) is provided on a side surface of a transition between the stop head (121, 221, 321) and the stop base (122, 222, 322).

10. The slat support stop (1) according to claim 1 or 2, characterized in that the slat support stop (1) comprises two of said shims (14a, 14 b).