Connecting structure of rack, rack and aircraft

Abstract

The utility model relates to a connecting structure of a rack, the rack and an aircraft, belongs to the technical field of aerospace, and solves the problems of large welding deformation and low mounting precision of the connecting structure of the existing rack in the prior art. The connecting structure comprises a first beam, a first connecting piece, a second connecting piece, a second beam and a third beam, the first beam comprises a first connecting part; the first connecting piece comprises a second connecting part and a first clamping part; the second connecting piece is provided with a second clamping part; the first connecting part is connected with the second connecting part; the first clamping part and the second clamping part are buckled to form a first clamping groove used for fixing the second beam and a second clamping groove used for fixing the third beam. The connecting structure provided by the utility model avoids welding deformation and is high in mounting precision.

Description

Technical Field

[0001] This utility model relates to the field of aerospace technology, and in particular to a frame connection structure, a frame, and an aircraft. Background Technology

[0002] Currently, the frame is usually formed by welding titanium alloy tubes as mounting beams. When a joint needs to be added between two tubes, the joint is usually welded and then welded to the two tubes. Therefore, on the one hand, a large amount of welding leads to large welding deformation, which in turn affects the installation accuracy of other systems; on the other hand, because the structural space between the two tubes of the frame is small, it is not easy to weld, the quality of the weld is not easy to guarantee, and after the weld structure is damaged, maintenance and component replacement are difficult. Utility Model Content

[0003] Based on the above analysis, the present invention aims to provide a frame connection structure, a frame, and an aircraft to solve the problems of large welding deformation and low installation accuracy in existing frame connection structures.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] One aspect of this utility model provides a frame connection structure for connecting two sets of fixed or pre-fixed second beams and third beams, wherein the second beams and third beams are intersecting and connected, and includes a first beam, a first connector and a second connector;

[0006] The first beam includes a first beam connecting portion disposed at both ends; the first connector includes a first connecting portion and a first clamping portion; the second connector has a second clamping portion;

[0007] The first beam connecting part is connected to the first connecting part; the first clamping part and the second clamping part are fastened together to form a first clamping groove for fixing the second beam and a second clamping groove for fixing the third beam.

[0008] Furthermore, the first clamping part includes a first groove and a second groove, and the second clamping part includes a fourth groove and a fifth groove; the first groove and the fourth groove engage to form the first clamping groove, and the second groove and the fifth groove engage to form the second clamping groove;

[0009] The first clamping part further includes a third groove, and the second clamping part further includes a sixth groove. The third groove and the sixth groove engage to form a receiving groove at the weld of the second beam and the third beam.

[0010] Furthermore, the third groove has a first arc-shaped bottom surface, the radius of which is greater than the radius of the second groove;

[0011] The sixth groove has a second arc-shaped bottom surface, the radius of which is greater than the radius of the fifth groove.

[0012] Furthermore, the first connecting portion includes a U-shaped groove; the opening of the U-shaped groove faces outward from the first beam; the bottom surface of the U-shaped groove is parallel to the first beam.

[0013] Furthermore, the bottom surface and the wall of the U-shaped groove are both planar.

[0014] Furthermore, the second connecting portion extends into the U-shaped groove and is fixed in place.

[0015] Furthermore, the first clamping portion also includes a first flange structure, which is formed by the first groove extending radially outward;

[0016] The second clamping portion further includes a second flange structure, which is formed by the fourth groove extending radially outward;

[0017] After the first clamping part and the second clamping part are engaged, the bottom surfaces of the first flange structure and the second flange structure are in contact.

[0018] A second aspect of this utility model is to provide a frame, including the connection structure of the frame.

[0019] A third aspect of this utility model is to provide an aircraft including the aforementioned frame.

[0020] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0021] (1) The first connecting member of this utility model includes a first connecting part and a first clamping part; the first beam connecting part is used to connect the first beam, and the first clamping part and the second clamping part of the second connecting member are engaged to form a first clamping groove and a second clamping groove for fixing the second beam and the third beam. No welding is required, which avoids welding deformation, ensures installation accuracy, and is simple to operate, convenient for operation in small spaces, and convenient for maintenance and component replacement.

[0022] (2) The present invention provides a receiving groove for accommodating the weld, which avoids the inability to fit effectively due to the weld, increases the contact area between the second beam and the third beam and the first and second connecting parts, and improves the stability of fixing the second beam and the third beam.

[0023] (3) The edge of the first beam connection is parallel to the axis of the second beam, the bottom surface of the U-shaped groove is parallel to the edge line, and when connecting, the side of the first connection away from the first clamping part fits against the bottom surface of the U-shaped groove, which improves the stability of the connection between the first connector, the first beam and the second beam, and at the same time, the first connection provides effective support for the first beam.

[0024] (4) The first flange structure and the second flange structure cooperate with each other, and the first limiting surface and the second limiting surface fit together to constrain the translation and rotation of the second beam, thereby improving the adaptability and flexibility of the connector.

[0025] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0026] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0027] Figure 1 This is a schematic diagram of the connection structure of the frame in Example 1;

[0028] Figure 2 This is a schematic diagram of the structure of the first beam in Example 1;

[0029] Figure 3 This is a schematic diagram of the structure of the first connector in Embodiment 1;

[0030] Figure 4 This is a schematic diagram of the structure of the second connector in Embodiment 1;

[0031] Figure 5 This is a schematic diagram of the fastening structure of the first and second connectors in Embodiment 1;

[0032] Figure 6 A schematic diagram of the structure after the first and second connectors are installed;

[0033] Figure 7 This is a structural diagram after the first beam has been installed.

[0034] Figure label:

[0035] 1-First beam, 11-Beam body, 12-First beam connecting part, 121-U-shaped groove, 2-First connector, 21-First connecting part, 211-Through hole, 22-First clamping part, 221-First groove, 222-Second groove, 223-Third groove, 224-First flange structure, 2241-First limiting surface, 3-Second connector, 31-Fourth groove, 32-Fifth groove, 33-Sixth groove, 34-Second flange structure, 341-Second limiting surface, 4-Second beam, 5-Third beam. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0037] Example 1

[0038] A specific embodiment of this utility model is as follows: Figure 1 As shown, a frame connection structure is disclosed for connecting two sets of fixed or pre-fixed second beams 4 and third beams 5, which are intersected and connected, including a first beam 1, a first connector 2 and a second connector 3;

[0039] The first beam 1 includes a first beam connecting portion 12 disposed at both ends; the first connector 2 includes a first connecting portion 21 and a first clamping portion 22; the second connector 3 has a second clamping portion.

[0040] The first beam connecting part 12 is connected to the first connecting part 21; the first clamping part 22 and the second clamping part are engaged to form a first clamping groove for fixing the second beam 4 and a second clamping groove for fixing the third beam 5.

[0041] Compared to existing technologies, the first connector 2 in this embodiment includes a first connecting portion 21 and a first clamping portion 22; the first beam connecting portion 12 is used to connect the first beam 1, and the first clamping portion 22 engages with the second clamping portion of the second connector 3 to form a first clamping groove and a second clamping groove for fixing the second beam 4 and the third beam 5. No welding is required, avoiding welding deformation, improving installation accuracy, and simplifying operation, making it convenient for operation in small spaces, maintenance, and component replacement.

[0042] For example, such as Figure 2As shown, the first beam 1 is a square tube structure. The first beam 1 includes a beam body 11 and a first beam connecting portion 12, which is disposed at both ends of the first beam 1 for connection with other connectors or beams. Preferably, the two ends of the first beam 1 are symmetrically arranged. Exemplarily, to increase the contact area between the first beam 1 and other connectors or beams, improve stable connection, and reduce installation difficulty, the first beam connecting portion 12 is configured as a U-shaped groove 121 structure, with the opening of the U-shaped groove 121 facing outwards. Preferably, the bottom surface and the groove wall of the U-shaped groove 121 are both planar. Further, to accommodate the installation of other beams, the edge of the first beam connecting portion 12 is parallel to the axis of the second beam 4. Correspondingly, the bottom surface of the U-shaped groove 121 is parallel to its edge.

[0043] The first connector 2 is used to connect the first beam 1, the second beam 4, and the third beam 5. For example... Figure 3 As shown, the first connector 2 is an integral structure, including a first connecting part 21 and a first clamping part 22.

[0044] Preferably, the first connecting portion 21 is a hexahedral block structure, the shape of which corresponds to the U-shaped groove 121 of the first beam connecting portion 12. In use, the first connecting portion 21 extends into the U-shaped groove 121 of the first beam connecting portion 12 and connects to the first beam 1. Specifically, the side of the first connecting portion 21 away from the first clamping portion 22 is fitted against the bottom surface of the U-shaped groove 121. Further, the first connecting portion 21 is provided with a through hole 211 to meet the weight reduction requirements of the UAV. To avoid affecting the connection strength, the axis of the through hole 211 is parallel to the height of the first connecting portion 21.

[0045] The edge of the first beam connecting part 12 is parallel to the axis of the second beam 4. The bottom surface of the U-shaped groove 121 is parallel to the edge line. When connecting, the side of the first connecting part 21 away from the first clamping part 22 fits against the bottom surface of the U-shaped groove 121, which improves the stability of the connection between the first connecting part 2, the first beam 1, and the second beam 4. At the same time, the first connecting part 21 provides effective support for the first beam 1.

[0046] The first clamping part 22 is used to connect the second beam 4 and the third beam 5. A first groove 221 is provided in the middle of the first clamping part 22 for connecting the second beam 4. Exemplarily, the first groove 221 is a semi-circular groove, the axial direction of the first groove 221 is the same as the installation direction of the second beam 4, and the radius of the first groove 221 matches the radius of the outer wall surface of the second beam 4.

[0047] The upper and lower parts of the first clamping part 22 are formed by first flange structures 224 extending radially from the edge of the first groove 221 to both sides, which are used to set fixing screws, etc., to fix the first clamping part 22. The bottom surface of the first flange structure 224 of the first clamping part 22 is a first limiting surface 2241. Preferably, in order to better fit and fix, the first limiting surface 2241 coincides with the center of the first groove 221.

[0048] A second groove 222 is provided in the middle of the lower part of the first clamping part 22 for connecting the third beam 5. Exemplarily, the second groove 222 is a semi-circular groove. The radius of the second groove 222 is the same as the radius of the outer wall surface of the third beam 5, and the axial direction of the second groove 222 is the same as the installation direction of the third beam 5.

[0049] It should be noted that, for reliable connection, the second beam 4 and the third beam 5 are welded together at their intersection. Accordingly, to avoid the weld seam between the second beam 4 and the third beam 5, the end of the second groove 222 extends into a third groove 223 towards the first groove 221, and the third groove 223 is adapted to the shape of the weld seam. For example, the third groove 223 has a first arcuate bottom surface, the radius of which is larger than the radius of the second groove 222.

[0050] The second connector 3 is used to cooperate with the first clamping part 22 of the second connector 3 to clamp the second beam 4 and the third beam 5. For example... Figure 4 As shown, the second connector 3 includes a second clamping portion. A fourth groove 31 is provided in the middle of the second clamping portion for connecting the second beam 4. Exemplarily, the fourth groove 31 is a semi-circular groove, the axial direction of the fourth groove 31 is the same as the installation direction of the second beam 4, and the radius of the fourth groove 31 matches the radius of the outer wall surface of the second beam 4.

[0051] The upper and lower parts of the second clamping part are formed by second flange structures 34 extending radially from the edge of the fourth groove 31 to both sides, used to install fixing screws, etc., to fix the second clamping part. The bottom surface of the second flange structure 34 of the second clamping part is the second limiting surface 341. Preferably, for better fit and fixation, the second limiting surface 341 coincides with the center of the fourth groove 31. In use, the first limiting surface 2241 and the second limiting surface 341 are tightly fitted to fix the second beam 4 and the third beam 5. In this embodiment, the first flange structure 224 and the second flange structure 34 cooperate, and the first limiting surface 2241 and the second limiting surface 341 fit together, constraining the translation and rotation of the second beam 4, improving the adaptability and flexibility of the connector.

[0052] A fifth groove 32 is provided in the middle of the lower part of the second clamping part for connecting the third beam 5. Exemplarily, the fifth groove 32 is a semi-circular groove. The radius of the fifth groove 32 is the same as the radius of the outer wall surface of the third beam 5, and the axial direction of the fifth groove 32 is the same as the installation direction of the third beam 5.

[0053] It should be noted that, for reliable connection, the second beam 4 and the third beam 5 are welded together at their intersection. Accordingly, to avoid the weld seam between the second beam 4 and the third beam 5, the end of the fifth groove 32 extends into a sixth groove 33 towards the fourth groove 31. The sixth groove 33 is adapted to the shape of the weld seam. Exemplarily, the sixth groove 33 has a second arcuate bottom surface, the radius of which is larger than the radius of the fifth groove 32.

[0054] like Figure 5 As shown, after the first clamping part 22 of the first connector 2 and the second clamping part of the second connector 3 are engaged, the first groove 221 and the fourth groove 31 engage to form a first clamping groove, and the second groove 222 and the fifth groove 32 engage to form a second clamping groove; the third groove 223 and the sixth groove 33 engage to form a receiving groove at the weld of the second beam 4 and the third beam 5. This embodiment provides a receiving groove for accommodating the weld, avoiding ineffective fitting caused by the weld, increasing the contact area between the second beam 4 and the third beam 5 and the first connector 2 and the second connector 3, and improving the stability of fixing the second beam 4 and the third beam 5.

[0055] The installation method of the connection structure provided in this embodiment is as follows:

[0056] Install the first connector 2. The first connector 2 connects the second beam 4 and the third beam 5. The second beam 4 is embedded in the first groove 221 of the first clamping part 22, and the third beam 5 is embedded in the second groove 222 of the first clamping part 22. The weld seam of the second beam 4 and the third beam 5 is located in the third groove 223.

[0057] Install the second connector 3. Align the fourth groove 31 of the second connector 3 with the second beam 4, the fifth groove 32 with the third beam 5, and the weld with the sixth groove 33. Fit the first limiting surface 2241 with the second limiting surface 341, and tighten the bolts externally to secure it, thus completing the connection of the second connector 3. Figure 6 As shown.

[0058] Install the first beam 1. Insert the U-shaped grooves 121 at both ends of the first beam 1 into the first connecting part 21 of the first connector 2. The edge of the first connecting part 21 extends into the bottom of the U-shaped groove 121. Align the threaded holes at the top and bottom, and screw in bolts to fix the first beam 1 and the first connector 2, thus completing the connection between the first connector 2 and the first beam 1. Figure 7 As shown.

[0059] Example 2

[0060] This embodiment provides a rack, including the rack connection structure of Embodiment 1.

[0061] Compared with the prior art, the advantages of the frame in this utility model embodiment are the same as those of the connection structure of the frame described above, and will not be repeated here.

[0062] Example 3

[0063] This embodiment provides an aircraft, including the frame of Embodiment 2.

[0064] Compared with the prior art, the advantages of the aircraft in this utility model embodiment are the same as those of the frame and the frame connection structure described above, and will not be repeated here.

[0065] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A frame connection structure for connecting two sets of fixed or pre-fixed second beams (4) and third beams (5), wherein the second beams (4) and third beams (5) are intersecting and connected, characterized in that, It includes a first beam (1), a first connector (2), and a second connector (3); The first beam (1) includes a first beam connecting portion (12) disposed at both ends; the first connector (2) includes a first connecting portion (21) and a first clamping portion (22); the second connector (3) has a second clamping portion; The first beam connecting part (12) is connected to the first connecting part (21); the first clamping part (22) and the second clamping part are engaged to form a first clamping groove for fixing the second beam (4) and a second clamping groove for fixing the third beam (5).

2. The connection structure according to claim 1, characterized in that, The first clamping part (22) includes a first groove (221) and a second groove (222), and the second clamping part includes a fourth groove (31) and a fifth groove (32); the first groove (221) and the fourth groove (31) engage to form the first clamping groove, and the second groove (222) and the fifth groove (32) engage to form the second clamping groove; The first clamping part (22) further includes a third groove (223), and the second clamping part further includes a sixth groove (33). The third groove (223) and the sixth groove (33) engage to form a receiving groove for the weld at the connection between the second beam (4) and the third beam (5).

3. The connection structure according to claim 2, characterized in that, The third groove (223) has a first arc-shaped bottom surface, the radius of which is greater than the radius of the second groove (222); The sixth groove (33) has a second arc-shaped bottom surface, the radius of which is greater than the radius of the fifth groove (32).

4. The connection structure according to claim 1, characterized in that, The first beam connection (12) includes a U-shaped groove (121); the opening of the U-shaped groove (121) faces the outside of the first beam (1); the bottom surface of the U-shaped groove (121) is parallel to the first beam (1).

5. The connection structure according to claim 4, characterized in that, The bottom surface and the wall of the U-shaped groove (121) are both flat.

6. The frame connection structure according to claim 5, characterized in that, The first connecting part (21) extends into the U-shaped groove (121) and is fixed.

7. The frame connection structure according to claim 2, characterized in that, The first clamping part (22) further includes a first flange structure (224), which is formed by the first groove (221) extending radially outward; The second clamping part further includes a second flange structure (34), which is formed by the fourth groove (31) extending radially outward; After the first clamping part (22) and the second clamping part are engaged, the bottom surfaces of the first flange structure (224) and the second flange structure (34) are in contact.

8. A rack, characterized in that, The frame connection structure includes any one of claims 1-7.

9. An aircraft, characterized in that, Includes the frame as described in claim 8.

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