B77743 section lower spar refitted supporting structure

Abstract

The utility model discloses a B77743 section lower spar refitted support which comprises a supporting plate assembly and a lower frame, the lower frame is replaced by two jacks, and a load meter assembly is additionally arranged between the jacks and the upper supporting plate assembly so as to achieve real-time load monitoring. According to the utility model, the load meter is added to monitor the load in real time, so that the work is safer. Due to the split type, moving and carrying are more labor-saving, and the transportation cost can be saved.

Description

TECHNICAL FIELD

[0001] A B77743 segment lower wing beam modification support structure is used for supporting the aircraft during modification. BACKGROUND

[0002] During the modification of the B77743 segment lower wing beam, a support bracket is needed to support the aircraft. The existing special support bracket is a one-piece support frame, lacks load monitoring, has certain safety hazards, is inconvenient to use, wastes manpower, and has high transportation costs.

[0003] Chinese Patent Publication No. CN206735699U discloses a jack support structure, relating to the technical field of aircraft bottom surface maintenance equipment. The jack support structure comprises a triangular support for supporting a jack, an adjusting support leg comprising a support portion and a transportation portion, the support portion being provided at the three top corners of the triangular support for leveling the jack, and the transportation portion comprising a roller, a tension spring and a first crank, the middle part of the first crank being connected to the triangular support through a pin shaft, one end of the tension spring being connected to the triangular support and the other end being connected to one end of the first crank, and the roller being installed at the other end of the first crank. The advantages are that the roller of the transportation portion of the jack support structure of the utility model contacts the ground in the non-working state of the jack, facilitating the adjustment of the position of the jack, and in the working state of the jack, the support portion contacts the ground, and through the adjustment of the connecting rod, the jack can be leveled conveniently. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a B77743 segment lower wing beam modification support structure which can not only provide load monitoring but also reduce transportation costs.

[0005] The utility model solves the technical problem through the following scheme: a B77743 segment lower wing beam modification support structure comprises a support plate assembly and a lower frame, wherein the lower frame is at least two jacks, and a load meter assembly is additionally arranged between the jacks and the upper support plate assembly, and the load meter assembly can monitor the load in real time.

[0006] Further, the load meter assembly is installed between the support plate assembly and the jacks through upper and lower adapters.

[0007] The utility model changes the original one-piece support frame into a split type, replaces the original lower frame with two jacks, and additionally arranges a load meter between the jacks and the upper contour plate to monitor the load in real time. Through the split type design, the load meter can be added to monitor the real-time load, and the support structure can be carried and moved separately, saving manpower and reducing transportation costs.

[0008] On the basis of the above scheme, the support plate assembly is sequentially composed of a bottom plate, a reinforcing plate, a plywood and a protective cover from bottom to top, the outer contour of the plywood is processed according to the aircraft contour data, the concave arc-shaped protective cover is arranged on the upper surface of the plywood, the edge of the protective cover is fixed with a rubber pad, the lower part of the plywood is connected to the base through the reinforcing plate, and the base is provided with a connecting block connected with the load meter assembly.

[0009] The rubber pad protects the contact surface from damaging the surface of the aircraft, and the reinforcing plate is used to ensure the strength of the connection.

[0010] Preferably, the upper and lower adapter structures are the same, and each has a fixing surface and a vertical upper and lower positioning shaft.

[0011] Preferably, the base of the support plate assembly is fixedly connected with the positioning shaft of the upper adapter.

[0012] Preferably, the base is provided with a slide rail at the upper part, the bottom of the slide rail is fixed on a square aluminum pipe, two connecting blocks are welded on the two sides of the aluminum pipe, and the positioning shaft of the upper adapter is fixedly connected with the connecting blocks.

[0013] On the basis of the above scheme, the reinforcing plate is fixedly connected with the bottom of the plywood through screws, and the base is fixedly connected with the reinforcing plate through bolts.

[0014] On the basis of the above scheme, the base is provided with rubber pads at the two ends.

[0015] The utility model has the advantages that the utility model adds a load meter for real-time monitoring of load, and enables work to be safer. The split type enables moving and carrying to be more labor-saving, and transportation cost can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a whole schematic view;

[0017] Figure 2 is a schematic view of a load meter assembly;

[0018] Figure 3 is a schematic view of a support plate assembly;

[0019] Figure 4 is a schematic view of a base of the support plate assembly;

[0020] EXPLANATION OF REFERENCE NUMBERS IN DRAWINGS

[0021] 1 - load meter assembly;

[0022] 1.1 - upper adapter; 1.3 - lower adapter; 1.2 - digital display load meter;

[0023] 2 - support plate assembly;

[0024] 2.1 – Rubber pad; 2.2 – Plywood; 2.3 – Reinforcing plate;

[0025] 2.4 – Screw; 2.5 – Bolt;

[0026] 2.6 – Base;

[0027] 2.61 – Slide rail; 2.62 – Aluminum tube; 2.63 – Connecting block; 2.64 – Protective pad;

[0028] 2.7 — Protective cover;

[0029] 3 - Jack. Detailed Implementation

[0030] like Figure 1 and Figure 2 As shown, a modified support structure for the lower wing beam of section B77743 is provided. The support structure includes a load gauge assembly 1, a support plate assembly 2, and two jacks 3. The jacks 3 are connected to the load gauge assembly 1 to support the load gauge assembly 1 and the support plate assembly 2. The load gauge assembly 1 uses an upper adapter 1.1 and a lower adapter 1.3 to install a digital load gauge 1.2 between the support plate assembly 2 and the jacks 3 for real-time load monitoring. The upper and lower adapters 1.1 and 1.3 have the same structure, each with a fixed surface and upper and lower positioning shafts perpendicular to it.

[0031] like Figure 3 As shown, the support plate assembly 2, from bottom to top, includes a base plate 2.6, a reinforcing plate 2.3, a plywood 2.2 processed according to the aircraft profile data, and a concave arc-shaped protective cover 2.7 on the upper surface of the plywood 2.2. A rubber pad 2.1 is fixed to the edge of the protective cover 2.7 to protect the contact surface from damage to the aircraft surface. The reinforcing plate 2.3 is fixed to the bottom of the plywood 2.2 by screws 2.4. The base 2.6 is fixedly connected to the reinforcing plate 2.3 by bolts 2.5 to ensure the strength of the connection. Two connecting blocks 2.63 are welded on the base 2.6 and fixedly connected to the positioning shaft of the upper adapter 1.1 to connect the load gauge assembly 1.

[0032] Furthermore, such as Figure 4 As shown, a slide rail 2.61 is provided on the upper part of the base 2.6. The bottom of the slide rail 2.61 is fixed to the square aluminum tube 2.62. Connecting blocks 2.63 are provided on both sides of the aluminum tube 2.62. The positioning shaft of the upper adapter 1.1 is fixedly connected to the connecting block 2.63.

[0033] In this embodiment, the base 2.6 has rubber pads 2.64 at both ends.

Claims

1. A B77743 section lower wing spar retrofit support structure comprising a support plate assembly and a lower frame, characterised in that, The lower frame is at least two jacks, and a load meter assembly is arranged between the jacks and the upper support plate assembly, and the load meter assembly can monitor the load in real time.

2. The B77743 section lower wing spar retrofit support structure of Claim 1, wherein, The load meter assembly is installed between the support plate assembly and the jacks through upper and lower adapters.

3. The B77743 Splice Lower Wing Beam Retrofit Support Structure of claim 1 or 2, wherein, The support plate assembly sequentially comprises a bottom plate, a reinforcing plate, a plywood and a protective cover from bottom to top, the outer contour of the plywood is processed according to the aircraft contour data, the concave arc-shaped protective cover is arranged on the upper surface of the plywood, the edge of the protective cover is fixed with a rubber pad, the lower part of the plywood is connected to the base through the reinforcing plate, and the base is provided with a connecting block connected with the load meter assembly.

4. The B77743 section lower wing spar retrofit support structure of Claim 2, wherein, The upper adapter and the lower adapter have the same structure and are provided with a fixing surface and upper and lower positioning shafts perpendicular to the fixing surface.

5. The B77743 panel lower wing spar retrofit support structure of claim 4, wherein, The base of the support plate assembly is fixedly connected with the positioning shaft of the upper adapter.

6. The B77743 panel lower wing spar retrofit support structure of Claim 5, wherein, The upper part of the base is provided with a sliding rail, the bottom of the sliding rail is fixed on a square aluminum pipe, two connecting blocks are welded on the two sides of the aluminum pipe, and the positioning shaft of the upper adapter is fixedly connected with the connecting blocks.

7. The B77743 panel lower wing spar retrofit support structure of claim 3, wherein, The reinforcing plate is fixed on the bottom of the plywood through screws, and the base is fixedly connected with the reinforcing plate through bolts.

8. The B77743 panel lower wing spar retrofit support structure of claim 3, wherein, The two ends of the base are provided with rubber pads.

Images