Slat adjusting structure

Abstract

A slat adjusting structure is used for adjusting the distance between the tail edge of a slat connected with a sliding rail and the fixed front edge of a wing, the slat is connected to the sliding rail in the mode that the slat can rotate around a first axis, and the slat and the sliding rail are each provided with an adjusting connecting hole with the axis parallel to the first axis as the central axis. At least a portion of an eccentric adjustment portion is mounted in the adjustment connection hole, the eccentric adjustment portion including: an eccentric shaft having a main shaft section inserted into the adjustment connection hole of one of the slat and the slide rail and an eccentric shaft section embedded into the adjustment connection hole of the other of the slat and the slide rail and eccentric with respect to the main shaft section; the eccentric bushing is arranged on the main shaft section and embedded into one adjusting connecting hole, the eccentric shaft and the eccentric bushing have the same eccentric distance, and the eccentric shaft and the eccentric bushing can be arranged in the mode that the eccentric directions of the eccentric shaft and the eccentric bushing are opposite to each other.

Description

Technical Field

[0001] This invention relates to a slat adjustment structure. Background Technology

[0002] The slats on the leading edge of an aircraft wing are lift-enhancing devices that increase the critical angle of attack of the aircraft. They can be mainly divided into fixed slats and movable slats. Among them, movable slats are mainly suspended on the pulley frame on the fixed leading edge of the wing by sliding rails, and their extension and retraction relative to the fixed leading edge are achieved by sliding rails.

[0003] The size of the gap between the trailing edge and the fixed leading edge of the slat determines the lift enhancement effect of the slat. Specifically, the position of the slat when it has not been extended or retracted relative to the fixed leading edge by the slide rail is called the zero installation position of the slat. When the slat is in this zero installation position, the distance between the trailing edge and the fixed leading edge should be a predetermined value. If the distance between the trailing edge and the fixed leading edge is greater than or less than the predetermined value, the lift coefficient will decrease, and the efficiency of the lift enhancement system formed by the slat cannot be fully utilized. Therefore, the size of the gap between the trailing edge and the fixed leading edge of the slat in the zero installation position is crucial to the aerodynamic performance and flight safety of the aircraft.

[0004] Previously, slats and rails often used a double-intersection connection method, meaning that both the slat and rail had two connection holes, which were then connected by bolts or other fasteners. However, this connection method has poor adjustability. If the gap between them is inconsistent with the expected value due to deformation of the slat's trailing edge or the fixed leading edge, the gap can only be adjusted by reshaping the slat's trailing edge. This process is time-consuming and requires high construction standards, making it difficult to implement under conditions such as flight line maintenance.

[0005] To address this issue, current solutions often involve installing a compensation and adjustment structure at the connection between the slat and the slide rail. For example, a compensation and adjustment structure consisting of three or more sets of bearings can be installed at the connection between the slat and the slide rail to adjust the position of the slat relative to the slide rail. However, this structure requires a large amount of space near the connection point and often affects the arrangement of other structures near the fixed leading edge. Furthermore, with this structure, multiple bearings are needed for each section of the slat, increasing the overall cost.

[0006] In addition, some existing methods connect slats and slide rails using more than two intersection points (i.e., through more than two connection holes and connected via connectors). An eccentric bolt or bushing is installed in the connection hole of the slat or slide rail, and this eccentric connection structure achieves a compensation adjustment structure for gap adjustment. However, with only one eccentric component, the slat or slide rail with the eccentric component always has a certain eccentricity relative to the other. The distance between the trailing edge of the slat and the fixed leading edge changes continuously with the change in the eccentric direction of the eccentric component. Therefore, it is difficult to position the slat to the installation zero position with the expected gap, resulting in a large workload for comparing the actual gap with the theoretical gap at the installation zero position, and making on-site construction more difficult. Summary of the Invention

[0007] The present invention was made in view of the above-mentioned problems, and its purpose is to provide a slat adjustment structure that can adjust the gap between the trailing edge of the slat and the fixed leading edge and can easily position the slat to the installation zero position.

[0008] To achieve the above objectives, the present invention provides a slat adjustment structure for adjusting the distance between the trailing edge of a slat connected to a slide rail and the fixed leading edge of the wing. The slat is rotatably connected to the slide rail. The slat and the slide rail are each provided with an adjustment connection hole with an axis parallel to the first axis as its central axis. At least a portion of an eccentric adjustment part is installed in the adjustment connection hole. The eccentric adjustment part includes: an eccentric shaft having a main shaft section and an eccentric shaft section. The main shaft section is inserted into the adjustment connection hole of one of the slat and the slide rail, and the eccentric shaft section is embedded in the adjustment connection hole of the other of the slat and the slide rail, and is eccentric relative to the main shaft section; and an eccentric bushing disposed on the main shaft section and embedded in the adjustment connection hole of one of the main shaft sections. The eccentric shaft and the eccentric bushing have the same eccentricity, and the eccentric shaft and the eccentric bushing can be configured to have opposite eccentric directions.

[0009] According to the slat adjustment structure of the present invention, an eccentric shaft and an eccentric bushing are simultaneously provided in a set of corresponding adjustment connection holes on the slat and the slide rail. The eccentric bushing is embedded in the adjustment connection hole of one of the slats and the slide rail, the main shaft section of the eccentric shaft is provided in the eccentric bushing, and the eccentric shaft section eccentric relative to the main shaft section is embedded in the adjustment connection hole of the other of the slats and the slide rail. Therefore, a double eccentric structure is formed, and the gap between the trailing edge of the slat and the fixed leading edge can be adjusted through this double eccentric structure. Furthermore, the eccentric shaft and the eccentric bushing have the same eccentricity, and the eccentric shaft and the eccentric bushing can be configured with opposite eccentric directions. Thus, by configuring the eccentric shaft and the eccentric bushing with opposite eccentric directions, the eccentricity of the two eccentric members can be canceled out. This allows the slat to be easily positioned to the installation zero position, similar to a structure using non-eccentric members to connect the slat and the slide rail. This facilitates comparison of the gap between the trailing edge of the slat and the fixed leading edge at the installation zero position with the expected value, simplifying the workflow and improving work efficiency.

[0010] Furthermore, in the slat adjustment structure of the present invention, it is preferable that when the slat is in the installation zero position, the eccentric direction of the eccentric shaft and the eccentric bushing are opposite to each other.

[0011] According to the above structure, when the slat is to be positioned at the installation zero position, the eccentricity of the eccentric shaft and the eccentric bushing can be canceled by making their eccentric directions opposite to each other, thereby making it easy to position the slat at the installation zero position and compare the actual gap with the expected value.

[0012] Furthermore, in the slat adjustment structure of the present invention, it is preferable that, when the slat is in the installation zero position, with a reference line orthogonal to the central axis of the first axis and the adjustment connection hole of one of them, the eccentric direction of the eccentric shaft and the eccentric bushing is parallel to the direction of the reference line.

[0013] Furthermore, in the slat adjustment structure of the present invention, it is preferable that a structure for indicating the eccentric direction is formed on the eccentric shaft and the eccentric bushing, and a structure for indicating the direction of the reference line is formed on the slat or the slide rail.

[0014] Based on the above structure, a reference line is formed by connecting the centers of the existing structures on the slats or slide rails, and structures are provided to indicate the eccentricity direction and the direction of the reference line. This allows for the simple configuration of the eccentric shaft and eccentric bushing with opposite eccentricity directions, simplifying the installation of the adjustment structure and improving work efficiency.

[0015] Furthermore, in the slat adjustment structure of the present invention, it is preferable to further include an anti-rotation member, which is rotatably disposed on the other party and can prevent the eccentric shaft or the eccentric bushing from rotating when rotation is restricted.

[0016] Furthermore, in the slat adjustment structure of the present invention, it is preferable that the anti-rotation member can rotate integrally with the eccentric shaft or the eccentric bushing.

[0017] According to the above structure, by setting an anti-rotation member, the rotation of the eccentric shaft or eccentric bushing can be restricted by limiting the rotation of the anti-rotation member to lock the position of the slat relative to the slide rail. The eccentric shaft or eccentric bushing can be rotated via the anti-rotation member to adjust the slat. Thus, in addition to its stopping function, the anti-rotation member can also function as a tool for rotating the eccentric shaft or eccentric bushing. Therefore, when the operator wants to adjust the slat, there is no need to carry additional tools, which improves work efficiency.

[0018] Furthermore, in the slat adjustment structure of the present invention, it is preferable that the anti-rotation member has a structure for indicating the installation direction.

[0019] Based on the above structure, by forming a structure indicating the installation direction on the anti-rotation component, it is easy to determine the installation posture of the anti-rotation position, thus improving work efficiency.

[0020] Furthermore, in the slat adjustment structure of the present invention, preferably, the slat and the slide rail are respectively provided with a rotating connecting hole with the first axis as the central axis, and the slat adjustment structure further includes a rotating shaft, which is disposed in the rotating connecting hole of the slat and the slide rail and connects the slat to the slide rail, and the other party can rotate around the rotating shaft.

[0021] According to the above structure, one of the slats and the slide rail can rotate relative to the other about the pivot in the rotatable connection hole, so that the pivot can be the main load-bearing part, thereby improving the structural strength.

[0022] (Invention effect)

[0023] According to the slat adjustment structure of the present invention, an eccentric shaft and an eccentric bushing are simultaneously provided in a corresponding set of adjustment connection holes on the slat and the slide rail, forming a double eccentric structure. This double eccentric structure allows adjustment of the gap between the trailing edge of the slat and the fixed leading edge. Furthermore, the eccentric shaft and the eccentric bushing have the same eccentricity, and the eccentric shaft and the eccentric bushing can be configured with opposite eccentric directions. Therefore, by configuring the eccentric shaft and the eccentric bushing with opposite eccentric directions, the eccentricity of the two eccentric components can be canceled out. This allows the slat to be easily positioned to the installation zero position, similar to a structure using non-eccentric components to connect the slat and the slide rail. This facilitates comparison of the gap between the trailing edge of the slat and the fixed leading edge at the installation zero position with the expected value, simplifying the workflow and improving work efficiency.

[0024] In addition, an indicator structure for indicating the installation direction when the installation is at the zero position is formed on the corresponding parts of the eccentric shaft, eccentric bushing, and slat or slide rail, which can easily enable the slat to be positioned at the zero position.

[0025] Furthermore, by employing components that combine anti-rotation and rotation-assistance functions, the installation and adjustment operations are simplified, and work efficiency is improved. Attached Figure Description

[0026] Figure 1 This is a structural diagram showing the connection between the slat and the slide rail via the slat intersection adjustment structure of the embodiment.

[0027] Figure 2 This is a partially enlarged view showing the slat intersection adjustment structure of the embodiment.

[0028] Figure 3 Observing from another perspective Figure 2 A diagram of the slat intersection adjustment structure.

[0029] Figure 4 This is a cross-sectional view of the slat intersection adjustment structure connection in the embodiment.

[0030] Figure 5 This is a three-dimensional view showing an eccentric bolt.

[0031] Figure 6 This is a three-dimensional view showing the eccentric bushing.

[0032] Figure 7 This is a diagram showing the eccentric bushing viewed along its axis.

[0033] Figure 8 This is a three-dimensional view showing the fixing clamp.

[0034] Figure 9 This is a diagram showing the eccentric bolt viewed along the axial direction.

[0035] Figure 10 This is a diagram of the slat intersection adjustment structure of the embodiment, viewed along the axial direction of the eccentric bushing.

[0036] Figure 11 This is a schematic diagram illustrating the working principle of the adjustment structure in the embodiment.

[0037] (Symbol Explanation)

[0038] 1. Slat;

[0039] 2. Slide rails;

[0040] 3. Eccentric bolts;

[0041] 4. Eccentric bushing;

[0042] 5. Fixing clamps;

[0043] 6. Sliding bushing;

[0044] 7. Flat bushing;

[0045] 8. Fixing bolts;

[0046] 9 nuts;

[0047] 10 sales;

[0048] 11. Tail edge of the slat;

[0049] 12. Fix the leading edge;

[0050] 13. Slatted earpieces;

[0051] 21. Slide rails and rollers;

[0052] 22. Slide rail lugs;

[0053] Positioning holes 23 and 53;

[0054] 24, 54 positioning slots;

[0055] 31, 41 Flange portion;

[0056] Marker holes 32 and 42

[0057] 33 First axle segment;

[0058] 34 Second axle segment;

[0059] 35. Third axle segment;

[0060] 51 Adjustment hole;

[0061] 52 Anti-rotation hole;

[0062] J baseline. Detailed Implementation

[0063] The slat adjustment structure of one embodiment of the present invention will now be described with reference to the accompanying drawings. For ease of explanation, the end of the aircraft wing furthest from the fuselage will sometimes be referred to as the wingtip, the end connected to the fuselage will be referred to as the wing root, and the direction from the wingtip to the wing root will be referred to as the wing's extension direction. Furthermore, in the following description, ... Figure 10 The top and bottom directions of the paper are the top and bottom directions, and are... Figure 10 The left and right directions on the middle of the paper correspond to the front and back directions of the aircraft. Specifically, with... Figure 10 In this context, the left direction is considered forward and the right direction is considered backward.

[0064] Figure 1 The connection structure between slat 1 and rail 2, as viewed from the wingtip towards the wing root, is shown. Figure 2 , Figure 3 The structure of the connection between the slat 1 and the slide rail 2 is shown in magnification.

[0065] like Figure 1 , Figure 2 As shown, a slat lug 13 is formed on the slat 1, and a slide rail lug 22 is formed on the slide rail 2. The slat lug 13 is a single lug, and the slide rail lug 22 is a double lug. Figure 3 As shown, the thickness of the slat lug 13 is less than the lug spacing of the slide rail lug 22, so that the slat lug 13 can be inserted into the slide rail lug 22. Two through holes (not shown) are formed on the slat lug 13 and the slide rail lug 22 respectively. The two through holes on each lug are arranged vertically for the insertion of components such as the eccentric bolt 3 and the eccentric bushing 4 described later to connect the slat 1 and the slide rail 2. Hereinafter, the upper through hole is sometimes referred to as the upper connecting hole and the lower through hole is referred to as the lower connecting hole.

[0066] In addition, a pair of through holes are formed on the double lugs of the slide rail lug 22 for inserting the fixing bolt 8, which will be described later. Hereinafter, these two through holes will sometimes be referred to as fixing holes.

[0067] In addition, slide rail 2 consists of multiple sets ( Figure 1 The diagram shows two sets of slide rail rollers 21 that clamp and support the slats 1 connected to them, thereby enabling the slats 1 to extend or retract relative to the leading edge (fixed leading edge 12) of the wing.

[0068] Figure 4 A cross-sectional view of the connection between slat 1 and slide rail 2 is shown. Figures 2 to 4 As shown, in this embodiment, the connection between the slat 1 and the slide rail 2 is provided with an eccentric bolt 3, an eccentric bushing 4, a fixing clamp 5, a sliding bushing 6, a flat bushing 7, a nut 9, a pin 10, and a fixing bolt 8.

[0069] Figure 5 The structure of the eccentric bolt 3 in this embodiment is shown. For example... Figure 5 As shown, the eccentric bolt 3 is generally formed in the shape of a flange bolt. Specifically, the eccentric bolt 3 has a hexagonal head and a flange portion 31 connected to the head at one end in the axial direction, and the eccentric bolt 3 has a shank portion connected to the flange portion and extending in the axial direction.

[0070] like Figure 4 and Figure 5 As shown, the shank of the eccentric bolt 3 can be divided into three shaft segments along the axial direction. Specifically, from the area near the flange 31 to the area away from the flange 31, they are the first shaft segment 33, the second shaft segment 34, and the third shaft segment 35, respectively.

[0071] The radial dimensions of the three shaft segments decrease sequentially in the order of first shaft segment 33, second shaft segment 34, and third shaft segment 35. The axial length of the second shaft segment 34 is approximately the same as the thickness of the slat lug 13. Furthermore, the outer peripheral surfaces of the first shaft segment 33 and the second shaft segment 34 are smooth, and one end of the third shaft segment 35 (the end furthest from the second shaft segment 34) forms a radially penetrating pin hole for insertion of a pin 10, which will be described later. Additionally, although not shown, an external thread is formed near the aforementioned pin hole in the third shaft segment 35.

[0072] The first shaft segment 33 and the third shaft segment 35 share a common main axis, and the second shaft segment 34 has an eccentric axis that is parallel to the main axis and maintains a specified distance from it, thus forming an eccentric structure. The distance between the eccentric axis and the main axis is the eccentricity e. Hereinafter, the first shaft segment 33 and the third shaft segment 35 are sometimes collectively referred to as the main shaft segment, and the second shaft segment 34 that forms the eccentric structure is referred to as the eccentric shaft segment.

[0073] In addition, the head and flange 31 of the eccentric bolt 3 have the same axis (i.e., main axis) as the first shaft segment 33 and the third shaft segment 35 of the rod.

[0074] Figure 9 The head and flange 31 of the eccentric bolt 3 are shown when viewed axially. Figure 5 and Figure 9 As shown, a marking hole 32 is provided on the end face of the flange portion 31 that connects to the head. This marking hole 32 is, for example, a countersunk hole. When viewed along the axial direction of the eccentric bolt 3, the center of the marking hole 32 is located on the line connecting the main axis and the eccentric axis, and is located on the side of the eccentric axis relative to the main axis. Therefore, even when the eccentric bolt 3 is inserted into the slat lug 13 and the slide rail lug 22 and the position of the eccentric shaft segment cannot be observed from the outside, the position of the eccentric shaft segment can be determined through this marking hole 32, thereby facilitating the determination and identification of the eccentric direction.

[0075] Furthermore, an external gear is formed on the outer peripheral surface of the flange portion 31 of the eccentric bolt 3. The specifications of the external gear match the internal gear on the fixing clamp 5, which will be described in detail later.

[0076] Figure 6 and Figure 7 The eccentric bushing 4 in this embodiment is shown. In this embodiment, two eccentric bushings 4 are provided, such as... Figure 4 As shown, two eccentric bushings 4 are respectively disposed on the two lugs of the slide rail lug 22. Figure 6 As shown, the eccentric bushing 4 includes a bushing portion and a flange portion 41 integrally formed at one axial end of the bushing portion.

[0077] The bushing portion is integrally formed into a cylindrical shape, which is inserted into and supported in the flat bushing 7 described later, and can rotate relative to the flat bushing 7. The outer edge of the flange portion 41 is integrally formed into a circle, and its central axis coincides with the central axis of the outer peripheral surface of the bushing portion.

[0078] An eccentric hole is formed in the eccentric bushing 4, extending through it axially. The central axis of this eccentric hole is parallel to and maintains a predetermined distance from the central axis of the flange portion 41 and the outer peripheral surface of the bushing portion, thus forming an eccentric structure. The distance between the axis of the eccentric hole and the axis of the flange portion 41 is also the eccentricity e. Furthermore, as... Figure 4 As shown, the eccentric hole allows the first shaft segment 33 of the aforementioned eccentric bolt 3 to be inserted and supports the first shaft segment 33.

[0079] like Figure 6 and Figure 7 As shown, a marking hole 42 is provided on the end face of the flange portion 41 on the side away from the bushing portion in the axial direction. This marking hole 42 is, for example, a countersunk hole, and when viewed along the axial direction of the eccentric bushing 4, the center of the marking hole 42 is located on the line connecting the axis of the flange portion 41 and the axis of the eccentric hole, and is located on the side of the axis of the eccentric hole relative to the axis of the flange portion 41. Therefore, even if the eccentric direction of the eccentric bushing 4 is not obvious due to the small eccentricity e, the current eccentricity direction can be determined by the marking hole 42.

[0080] In addition, an external gear is formed on the outer peripheral surface of the flange portion 41 of the eccentric bushing 4. The specifications of the external gear match the internal gear on the fixing clamp 5, which will be described in detail later.

[0081] like Figure 8 As shown, in this embodiment, the fixing clamp 5 is formed in the shape of a plate and is provided with an adjustment hole 51 and an anti-rotation hole 52 with an internal gear.

[0082] The adjustment hole 51 is a through hole penetrating the fixing clamp 5 along its thickness direction. Viewed along the thickness direction of the fixing clamp 5, it is elongated oval in shape. Furthermore, the adjustment hole 51 is formed at one end of the fixing clamp 5 along its length direction, and the length direction of the adjustment hole 51 is approximately the same as the length direction of the fixing clamp 5. Its width in the direction perpendicular to the length direction is sufficient for the insertion of the fixing bolt 8 (described later). Preferably, the inner circumferential surfaces at both ends of the adjustment hole 51 along its length direction are approximately the same as the outer circumferential surface of the fixing bolt 8 (specifically, the shank of the fixing bolt 8). Moreover, when the fixing clamp 5 is installed onto the slide rail lug 22 and the slat 1 is in the zero-position installation position, the adjustment hole 51 communicates with the fixing hole on the slide rail lug 22.

[0083] The anti-rotation hole 52 is a through hole that passes through the fixing clamp 5 along the thickness direction. When viewed along the thickness direction of the fixing clamp 5, it is circular in shape. In addition, the anti-rotation hole 52 is formed at the other end of the length direction of the fixing clamp 5 (that is, the end opposite to the adjustment hole 51).

[0084] As described above, an internal gear is formed on the inner circumferential surface of the anti-rotation hole 52. The specifications of this internal gear match the external gear formed on the outer circumferential surface of the flange portion 31 of the eccentric bolt 3 or the flange portion 41 of the eccentric bushing 4. Specifically, the external gear on the flange portion 31 or the flange portion 41 can engage with the internal gear in the anti-rotation hole 52. After the internal and external gears are engaged, if either the eccentric bolt 3 or the eccentric bushing 4 or the fixing clamp 5 is restricted from rotating, the other will also be restricted from rotating through the engagement of the gears. That is, the internal gear in the anti-rotation hole 52 achieves the effect of restricting rotation.

[0085] In addition, such as Figure 4 As shown, in this embodiment, the diameter of the flange portion 41 of the eccentric bushing 4 is different from the diameter of the flange portion 31 of the eccentric bolt 3. Therefore, the inner diameters of the anti-rotation holes of the fixing clamp used to restrict the rotation of the eccentric bushing 4 and the fixing clamp used to restrict the rotation of the eccentric bolt 3 are also different. However, the structures of the fixing clamps are not significantly different except for the inner diameter of the anti-rotation hole. Therefore, they will not be distinguished in the following description.

[0086] like Figure 8 As shown, a positioning hole 53 and a positioning groove 54 are provided on one end face of the fixing clamp 5 in the thickness direction. The positioning hole 53 is, for example, a countersunk hole. Figure 10 As shown, when the fixing clamp 5 is installed to the slide rail lug 22 and the slat 1 is in the zero position, when viewed along the thickness direction of the fixing clamp 5, the center of the positioning hole 53 is located on the line connecting the centers of the two connections between the slat 1 and the slide rail 2. Specifically, the center of the positioning hole 53 is located on the line connecting the centers of the two through holes (upper connecting hole and lower connecting hole) on the slat lug 13 or the slide rail lug 22. This line is located on... Figure 10 The baseline J is shown as a dashed line.

[0087] The positioning groove 54 is, for example, a recessed groove. When the fixing clamp 5 is installed on the slide rail lug 22 and the slat 1 is in the zero position, when viewed along the thickness direction of the fixing clamp 5, the positioning groove 54 is set to be perpendicular or approximately perpendicular to the aforementioned baseline J in the length direction.

[0088] Therefore, when the slat 1 is positioned to the installation zero position, it is possible to quickly determine whether the slat 1 has been positioned to the installation zero position through the positioning groove 54, and it is possible to determine whether the eccentric direction of the eccentric bushing 4 is correct through the positioning hole 53 and the mark hole 42 on the eccentric bushing 4. This will be described in detail later.

[0089] In addition, such as Figure 2 As shown, a positioning hole 23 and a positioning groove 24 are provided on one side (wingtip side) of the slide rail lug 22 in the thickness direction. The positioning hole 23 is, for example, a countersunk hole, and the positioning groove 24 is, for example, a countersunk groove.

[0090] When viewed along the thickness direction of the slide rail lug 22 (specifically from the wingtip to the wing root), the center of the positioning hole 23 is located on the reference line J, the length direction of the positioning groove 24 is consistent with the reference line J, and preferably the central axis of the positioning groove 24 in the length direction coincides with the reference line J.

[0091] Furthermore, when the fixing clamp 5 is installed on the slide rail ear 22, when viewed along the thickness direction of the slide rail ear 22, the positioning hole 23 and the positioning groove 24 are located on both sides of the fixing clamp 5 in the direction of the reference line J. In this embodiment, the positioning hole 23 is located on the upper side and the positioning groove 24 is located on the lower side.

[0092] In addition, although not shown, positioning holes 23 and positioning grooves 24 are provided in the same manner on the end face of the wing root side of the slide rail lug 22.

[0093] The sliding bushing 6 is a bushing made of a low-friction material, such as... Figure 4 As shown, the sliding bushing 6 is inserted into the eccentric bushing 4 of the slide rail lug 22 located near the wingtip, which allows the third shaft segment 35 of the eccentric bolt 3 to be inserted and supports that shaft segment. Furthermore, when the third shaft segment 35 of the eccentric bolt 3 is inserted into the sliding bushing 6, it is preferable that the eccentric bolt 3 can be allowed to rotate freely while restricting radial movement of the eccentric bolt 3.

[0094] Flat bushing 7 is a cylindrical bushing, such as... Figure 4 As shown, two flat bushings 7 are respectively inserted into the connecting holes on the upper side of the slide rail lugs 22, and respectively support the eccentric bushing 4. Here, the flat bushings 7 are preferably made of a material with a high wear resistance coefficient and a low friction coefficient, so as to reduce the wear of the eccentric bushing 4 when it rotates.

[0095] Furthermore, by configuring the flat bushing 7 and sliding bushing 6, the assembly accuracy requirements for the eccentric bushing 4 and eccentric bolt 3 can be reduced to a certain extent, thus improving the operability of the assembly.

[0096] The fixing bolt 8 is, for example, a general bolt, with external threads formed at the end of its shank (i.e., the end away from the head) and a radially penetrating pin hole formed at the end for the pin 10 described below to be inserted.

[0097] In this embodiment, the nut 9 is a slotted nut that can mate with the external thread on the third shaft segment 35 of the eccentric bolt 3 or the external thread on the fixing bolt 8, and has multiple radial grooves arranged circumferentially.

[0098] In this embodiment, pin 10 is a cotter pin, such as... Figure 3 , Figure 4 As shown, after the nut 9 is placed on the eccentric bolt 3 or the fixing bolt 8 and turned to the appropriate position, the pin 10 can be inserted from the appropriate radial groove and pass through the pin hole on the eccentric bolt 3 or the fixing bolt 8, thereby preventing the nut 9 from being unscrewed from the eccentric bolt 3 or the fixing bolt 8 due to rotation, thus achieving the anti-loosening effect.

[0099] The following describes the installation method of the slat intersection adjustment structure in this embodiment.

[0100] In this embodiment, the slat 1 has a single-eared slat lug 13, and the slide rail 2 has a double-eared slide rail lug 22. When installing the slat intersection adjustment structure, firstly, insert the slat lug 13 between the double lugs of the slide rail lug 22, align the upper and lower connecting holes on the slat lug 13 and the slide rail lug 22 with each other, and pass the fixing bolt 8 through the lower connecting hole on the slat lug 13 and the slide rail lug 22, and then tighten it with the nut 9 and the pin 10.

[0101] Next, two flat bushings 7 are respectively inserted into the two upper connecting holes of the slide rail lug 22, and then two eccentric bushings 4 are respectively inserted into the flat bushings 7. At this time, the flange portion 41 of the eccentric bushing 4 abuts against the slide rail lug 22, and the eccentric bushing 4 is configured such that the marking hole 42 on the flange portion 41 is above the upper connecting hole of the slide rail lug 22 and aligned with the upper positioning hole 23 on the slide rail lug 22. The term "aligned" here means that when viewed along the extension direction of the wing, the line connecting the center of the marking hole 42 and the center of the positioning hole 23 coincides with the reference line J, that is, the center of the marking hole 42 is located on the reference line J.

[0102] Then, the sliding bushing 6 is installed into the eccentric bushing 4 on the wingtip side, and the eccentric bolt 3 is then installed from the wing root side until the flange portion 31 of the eccentric bolt 3 abuts against the flange portion 41 of the eccentric bushing 4 on the wing root side. At this time, as Figure 4 As shown, the first shaft segment 33 of the eccentric bolt 3 is located between the flange 31 and the slat lug 13, the second shaft segment 34 is housed in the upper connecting hole on the slat lug 13, and the third shaft segment 35 passes through the sliding bushing 6 and the pin hole on it is located on the wing tip side of the sliding bushing 6.

[0103] Additionally, at this time, the eccentric bolt 3 is configured such that the mark hole 32 is located below the upper connecting hole on the slide rail lug 22 and aligned with the lower positioning groove 24 on the slide rail lug 22. Here, "alignment" means that when viewed along the extension direction of the wing, the center of the mark hole 32 is located on the central axis of the positioning groove 24 along its length, i.e., the center of the mark hole 32 is located on the reference line J.

[0104] Therefore, the center of the mark hole 42 of the eccentric bushing 4 and the mark hole 32 of the eccentric bolt 3 are both located on the baseline J, and are located on both sides relative to the upper connecting hole.

[0105] Then, the corresponding fixing clamps 5 are installed onto the eccentric bolts 3 and the two eccentric bushings 4 respectively. Specifically, the internal gear on the fixing clamp 5 is engaged with the corresponding external gear on the eccentric bolt 3 or the eccentric bushing 4. At this time, each fixing clamp 5 is configured such that the positioning hole 53 is above the upper connecting hole on the slide rail lug 22 and aligned with the upper positioning hole 23 on the slide rail lug 22, and the length direction of the positioning groove 54 is perpendicular or approximately perpendicular to the baseline J.

[0106] Then, pass the fixing bolt 8 through the adjusting hole 51 on the fixing clamp 5 and the fixing hole on the slide rail lug 22, and then tighten it with the nut 9 and pin 10. Finally, tighten the eccentric bolt 3 with the nut 9 and pin 10.

[0107] Thus, the installation of the slat intersection adjustment structure of this embodiment is completed, and the slat after installation in the above manner is in the installation zero position.

[0108] Specifically, during the installation process described above, the eccentric directions of the eccentric bolt 3 and the eccentric bushing 4 are configured to be opposite to each other, and their eccentricity is e. Therefore, upon completion of installation, the center of the upper connecting hole of the slat lug 13 is first eccentrically offset upwards by an eccentricity e relative to the center of the upper connecting hole of the slide rail lug 22 via the eccentric bushing 4, and then eccentrically offset downwards by an eccentricity e via the eccentric bolt 3. As a result, the center of the upper connecting hole of the slat lug 13 and the center of the upper connecting hole of the slide rail lug 22 coincide in the wing's extension direction. Therefore, in the state after the above installation, the relative positional relationship between the slat 1 and the slide rail 2 is the same as that when directly connected by two ordinary bolts. Taking the slat position in this state as the installation zero point and designing the gap between the slat trailing edge 11 and the fixed leading edge 12 as the expected value, even if the slat 1 is subsequently adjusted, it can be easily restored to the installation zero point by reinstalling it according to the above steps.

[0109] The following describes in detail the operation method of adjusting the gap between the slat trailing edge 11 and the fixed leading edge 12 using the slat adjustment structure of this embodiment.

[0110] When the gap between the slat trailing edge 11 and the fixed leading edge 12 at the installation zero position deviates from the expected value due to deformation of the slat trailing edge 11 or the fixed leading edge 12, the slat adjustment structure of this embodiment is used for adjustment.

[0111] First, loosen the fastening of the fixing bolt 8 that restricts the rotation of the fixing clamp 5. Specifically, remove the nut 9 and pin 10 from the fixing bolt 8, and then remove the fixing bolt 8 from the slide rail lug 22 and the multiple fixing clamps 5.

[0112] Then, the fixing clamp 5 is used as a wrench. The eccentric bolt 3 and eccentric bushing 4 are rotated by the gear meshing of the fixing clamp 5 with the eccentric bolt 3 and eccentric bushing 4. The gap between the tail edge 11 of the slat and the fixed front edge 12 is adjusted by the eccentric rotation.

[0113] The above adjustment principle refers to Figure 9 Please provide an explanation. Figure 9 A simplified diagram of the adjustment structure, viewed along the wing's extension direction, is shown. In the rhomboid structure, point A is the center of the lower connecting hole of the slat lug 13 and the slide rail lug 22, connected by the fixing bolt 8; point B is the center of the upper connecting hole of the slide rail lug 22; point C is the center of the eccentric hole of the eccentric bushing 4; and point D is the center of the upper connecting hole of the slat lug 13. Furthermore, for ease of illustration and explanation, Figure 9 This shows that slat 1 is not in the zero-installation position.

[0114] When the gap between the trailing edge 11 of the slat and the fixed leading edge 12 is large (i.e.) Figure 9 When the angle α between line segment AB and line segment AD is relatively large, it can be along... Figure 9 Rotate the eccentric bushing 4 clockwise and simultaneously rotate the eccentric bolt 3 appropriately. While increasing the angle θ between line segments BC and BA, decrease the size of angle α, thereby bringing the tail edge 11 of the slat closer to the fixed leading edge 12 to reduce the gap.

[0115] Conversely, when the gap between the trailing edge 11 and the fixed leading edge 12 is small, it can be along... Figure 9 The eccentric bushing 4 is rotated counterclockwise, and the eccentric bolt 3 is rotated appropriately at the same time. While reducing the angle θ, the angle α is increased, so that the tail edge 11 of the slat is moved away from the fixed leading edge 12 to increase the gap.

[0116] Furthermore, during the aforementioned adjustment process starting from the installation zero position, since the relative configuration of the eccentric bolt 3 and the eccentric bushing 4 is fixed, that is, their respective eccentric directions are configured to be opposite to each other in the vertical direction, for the same type of slat 1 (for example, the distance from the slat trailing edge 11 to the center of the upper connecting hole of the slat lug 13 is the same), the adjustment result of the slat trailing edge 11 obtained by rotating the eccentric bolt 3 and the eccentric bushing 4 at a specific angle can be expected.

[0117] Therefore, a table showing the correspondence between rotation angle and adjustment result can be obtained in advance through simulation or physical model experiments. When adjusting, the appropriate adjustment method can be found by referring to the table, thereby significantly improving the efficiency of adjustment operations.

[0118] After adjustment, remove the fixing clamp 5 and reconfigure it so that the fixing bolt 8 can pass through the adjustment hole 51 and the through hole on the slide rail ear 22. Then, tighten it again with the fixing bolt 8, nut 9 and pin 10 in the above manner to prevent the eccentric bolt 3 and eccentric bushing 4 from rotating and lock the slat 1 in the adjusted position.

[0119] (Main effects of this implementation method)

[0120] According to the slat adjustment structure of this embodiment, for the slat 1 and the slide rail 2 connected via the upper and lower connecting holes on the single-ear slat lug 13 and the double-ear slide rail lug 22, an eccentric bushing 4 is provided in the two upper connecting holes of the slide rail lug 22, and an eccentric shaft segment of an eccentric bolt 3 is provided in the upper connecting hole of the slat lug 13. The main shaft segment of the eccentric bolt 3 is provided in the eccentric hole of the eccentric bushing 4, and the eccentric bolt 3 and the eccentric bushing 4 have the same eccentricity e. Thus, by arranging the eccentric directions of the eccentric bolt 3 and the eccentric bushing 4 in opposite directions, the upper connecting holes of the slat lug 13 and the slide rail lug 22 can be arranged so that their centers coincide.

[0121] Based on this, the position of the slat 1 in this state is set to the installation zero position where the gap between the slat trailing edge 11 and the fixed leading edge 12 is the expected value. Thus, the gap between the slat trailing edge 11 and the fixed leading edge 12 can be adjusted by the double eccentric structure of the eccentric bolt 3 and the eccentric bushing 4. The slat 1 can be placed in the installation zero position by configuring the eccentric bolt 3 and the eccentric bushing 4 with opposite eccentric directions. The gap at the installation zero position is compared with the expected value. Compared with the prior art, there is no need to set up multiple sets of bearings, which reduces the cost and installation space requirements. Moreover, the installation zero position can be easily and accurately located and subsequently adjusted, improving work efficiency and reliability.

[0122] Furthermore, marking holes 32 and 42 indicating the eccentric direction are formed on the eccentric bolt 3 and eccentric bushing 4, and positioning holes 23 and positioning grooves 24 indicating the direction of the reference line J are formed on the slide rail lug 22. Thus, by aligning the above-mentioned marking holes, positioning holes, positioning grooves, etc., the eccentric bolt 3 and eccentric bushing 4 can be easily configured with opposite eccentric directions, thereby improving work efficiency.

[0123] In addition, the fixing clamp 5 is also provided with positioning holes 53 and positioning grooves 54 for indicating the installation direction. Therefore, the installation posture of the fixing clamp 5 can be easily determined, which improves work efficiency.

[0124] In addition, the fixing clamp 5 can prevent the eccentric bolt 3 and eccentric bushing 4 from rotating when the rotation is restricted by the fixing bolt 8, and can act like a wrench to rotate the eccentric bolt 3 and eccentric bushing 4 when the fixing bolt 8 is removed, reducing the number of tools required for adjustment and improving operability.

[0125] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments.

[0126] For example, in the above embodiment, the slat lug 13 of the slat 1 is a single lug and the slide rail lug 22 of the slide rail 2 is a double lug, but it is not limited to this. The slat lug 13 may be a double lug and the slide rail lug 22 may be a single lug, and the components may be configured in a manner similar to the above embodiment to connect the slat 1 and the slide rail 2.

[0127] Furthermore, in the above embodiment, the eccentric bolt 3 and the eccentric bushing 4 are provided in the upper connecting hole, but are not limited to this. They can also be provided in the lower connecting hole. In this case, the upper connecting hole is connected with the fixing bolt 8 so that the slat 1 can rotate around it.

[0128] Furthermore, in the above embodiments, the connecting holes on the slat lug 13 and the slide rail lug 22 are arranged vertically, but are not limited to this. Their arrangement direction is not restricted; they can be arranged horizontally or inclined relative to the vertical or horizontal direction.

[0129] Furthermore, the eccentric bolt 3 is not limited to the configuration shown in the above embodiments. For example, the end of the eccentric bolt 3 with the flange portion 31 may also be located on the opposite side of the slide rail lug 22 in the wing extension direction. In addition, the specific shape of the eccentric bolt 3 is not limited to a bolt, as long as it has a main shaft section and an eccentric shaft section that is eccentric to the main shaft section.

[0130] Furthermore, the connection method between the fixing clamp 5, the eccentric bolt 3, and the eccentric bushing 4 is not limited to gear meshing; it can also be achieved through fastener connection, magnetic connection, etc. The method of restricting the rotation of the fixing clamp 5 is not limited to using the fixing bolt 8 for limiting; for example, the fixing clamp 5 can also be connected to the slide rail lug 22 via a snap-fit. When adjustment is needed, the snap-fit ​​can be released and the fixing clamp 5 can be rotated for adjustment.

[0131] It should be understood that within the scope of this invention, the various parts of the embodiments can be freely combined, or the various parts of the embodiments can be appropriately modified or omitted.

Claims

1. A slat adjustment structure, wherein the slat adjustment structure is used to adjust the distance between the trailing edge of a slat connected to a slide rail and the fixed leading edge of a wing, the slat being rotatable about a first axis, the slat and the slide rail respectively having adjustment connection holes with an axis parallel to the first axis as the central axis, and at least a portion of an eccentric adjustment part being installed in the adjustment connection holes, characterized in that, The eccentric adjustment unit includes: An eccentric shaft having a main shaft section and an eccentric shaft section, the main shaft section being inserted into an adjustment connection hole of one of the slat and the slide rail, and the eccentric shaft section being embedded in an adjustment connection hole of the other of the slat and the slide rail, and being eccentric relative to the main shaft section; and An eccentric bushing is disposed on the spindle section and embedded in one of the adjustment connection holes. The eccentric shaft and the eccentric bushing have the same eccentricity. The eccentric shaft and the eccentric bushing can be configured such that their eccentric directions are opposite to each other.

2. The slat adjustment structure as described in claim 1, characterized in that, When the slat is in the zero position, the eccentric direction of the eccentric shaft and the eccentric bushing are opposite to each other.

3. The slat adjustment structure as described in claim 2, characterized in that, When the slat is in the installation zero position, with a reference line orthogonal to the central axis of the first axis and the adjustment connection hole of one of them, the eccentric direction of the eccentric shaft and the eccentric bushing is parallel to the direction of the reference line.

4. The slat adjustment structure as described in claim 3, characterized in that, Structures for indicating the direction of eccentricity are formed on the eccentric shaft and the eccentric bushing. A structure for indicating the direction of the reference line is formed on the slat or the slide rail.

5. The slat adjustment structure as described in claim 4, characterized in that, It also includes an anti-rotation member, which is rotatably disposed on the other party and can prevent the eccentric shaft or the eccentric bushing from rotating when rotation is restricted.

6. The slat adjustment structure as described in claim 5, characterized in that, The anti-rotation component can rotate integrally with the eccentric shaft or the eccentric bushing.

7. The slat adjustment structure as described in claim 6, characterized in that, The anti-rotation member has a structure for indicating the installation direction.

8. The slat adjustment structure as described in any one of claims 1 to 7, characterized in that, The slat and the slide rail are respectively provided with rotational connecting holes with the first axis as the central axis. The slat adjustment structure further includes a rotating shaft, which is disposed in the rotational connection hole of the slat and the slide rail and connects the slat to the slide rail. The other party can rotate about the rotation axis.

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