Movable support

Abstract

A movable support is used for carrying a large-section test piece of an airplane, the movable support comprises a plurality of bearing parts, the bearing parts are composed of longitudinal beams, cross beams, wooden supports and inclined struts and used for bearing the large-section test piece, the longitudinal beams and the cross beams are fixed together in an overlapped mode to form bearing bases of the bearing parts, and the wooden supports are used for supporting the large-section test piece. The wooden supports are vertically arranged on the bearing base at intervals, and the inclined struts are arranged between the wooden supports and the bearing base; and the moving part is arranged at the bottom of the movable bracket and is used for driving the movable bracket to move. By means of the movable support, the requirement for carrying out an HI RF test on a large-section test piece of an aircraft can be well met.

Description

Technical Field

[0001] This utility model relates to a movable support, and more specifically, to a movable support specifically used for conducting electromagnetic effect tests on large sections of aircraft test components, belonging to the field of electromagnetic effect testing for civil aircraft. Background Technology

[0002] Before an aircraft is put into production, a series of tests are required to verify whether its performance meets the relevant national standards. Among them, the HIRF test is a necessary test process before an aircraft is put into production.

[0003] HIRF (High Intensity Radio Field) is an electromagnetic environment problem caused by human activities. It refers to a type of electromagnetic radiation with relatively high energy per unit area, which is mainly determined by the electric and magnetic field strength of electromagnetic waves.

[0004] HIRF is an important component of complex electromagnetic environments. It can act as a source of electromagnetic interference and enter the aircraft interior through coupling paths such as doors, windows, antennas, and openings, thereby causing radiated or conducted interference to cabin equipment.

[0005] For aircraft, the HIRF environment is mainly generated by the transmission of electromagnetic radio frequency energy from radar, radio stations, broadcast television transmitters, and other ground, water, and air radio frequency (RF) transmitters. It is characterized by a wide frequency coverage, high electric field strength, and long duration of action, which can harm the normal operation of the electrical and electronic systems of various aircraft and is an "invisible killer" affecting flight safety.

[0006] With the increasing use of electronic equipment in modern aircraft, the importance of HIRF protection has become increasingly prominent, becoming a necessary condition for aircraft design and the installation of airborne equipment.

[0007] HIRF testing involves injecting an electric field radio frequency energy into a resonant cavity and generating a statistically uniform and isotropic radio frequency environment (uniform domain) through mechanical stirring or other methods. This allows the test object to be subjected to isotropic radio frequency energy interference when operating in the uniform domain, thereby simulating a complex external electromagnetic environment and verifying the HIRF protection capability of the test object.

[0008] like Figure 11 As shown, the current test section 2' of the civil aircraft is a 1:1 15-meter sample section cut from the forward fuselage of a wide-body passenger aircraft. The test section is formed into a roughly hollow cylindrical shape, with a length of about 15 meters and a diameter of about 6 meters.

[0009] For example, the HIRF test for civil aircraft is a lightning and HIRF research and development test conducted on a 15-meter sample section of a civil aircraft, in order to obtain the HIRF protection effectiveness of the main section of the material, so as to guide the HIRF protection design of civil aircraft.

[0010] During HIRF testing, the 15-meter sample section of a civil aircraft cannot be placed directly on the test site. It needs to be supported by a bracket and loaded onto the bracket before being placed on the test site. However, due to the special specifications of the 15-meter sample section and the special requirements of HIRF testing, this bracket is usually a non-standard part and is very difficult to design.

[0011] Specifically, support components suitable for conducting HIRF tests on large sections of aircraft test components must meet the following requirements:

[0012] (a) Support. The 15-meter section is 15 meters long and 6 meters in diameter, with a total weight of nearly 9 tons. The support must be able to support the 15-meter section without being crushed or overturned, and must ensure sufficient safety.

[0013] (b) Mobility. HIRF testing requires an open space, but in the event of severe weather (such as hurricanes and heavy rain), the test specimens need to be moved into the building to protect the test sections from damage.

[0014] (c) Use of non-metallic materials. Due to the special nature of HIRF testing, the material of the part of the support that contacts the test specimen cannot be metallic. Specifically, it needs to be made of non-conductive material while ensuring the overall support strength.

[0015] (d) Non-solid. Due to the special nature of conducting HIRF tests, the support needs to be designed to be non-solid while ensuring support strength, so as to leave as much space inside as possible.

[0016] Previously, relevant support components existed, but these support components could not fully meet the design requirements of (a) to (d) above.

[0017] For example, patent CN108123662A discloses a movable bracket, which includes a support beam and a pin mounting assembly. Both ends of the support beam are connected to movable bracket mounting plates. The movable bracket mounting plates are connected to protective covers via the pin mounting assembly. The top of the protective cover is provided with a fixed bracket and a pull rod, and the top of the pull rod is connected to the top of the side wall of the fixed bracket.

[0018] However, the magnetic head is installed in the groove of the movable support, which is made of metal, and there are no reinforcing ribs between the support beam and the fixed support, which cannot guarantee the overall support strength, making it difficult to apply to test parts that support large sections of aircraft.

[0019] In view of the shortcomings of the prior art, the present invention provides a movable support that is made of non-metallic materials and designed as a non-solid form while ensuring support strength, and also has mobility. Utility Model Content

[0020] This disclosure is made to solve the above-mentioned technical problems, and its purpose is to provide a movable support that can be designed as a non-solid form while ensuring support strength, and also has flexible mobility.

[0021] To achieve the purpose of this disclosure, a movable support is provided for transporting a large section of an aircraft test piece. The movable support includes: a plurality of load-bearing parts, each load-bearing part consisting of longitudinal beams, cross beams, wooden supports, and diagonal braces, and used to support the large section of the test piece; the longitudinal beams and cross beams are stacked and fixed together to form a load-bearing base for the load-bearing parts; a plurality of wooden supports are erected on the load-bearing base at intervals; and the diagonal braces are disposed between the wooden supports and the load-bearing base; and a movable part disposed at the bottom of the movable support and used to move the movable support.

[0022] As described above, by setting up multiple load-bearing parts consisting of longitudinal beams, transverse beams, wooden supports, and diagonal braces, the support strength for large sections of the test specimen can be guaranteed. By setting up movable parts, flexible mobility can be provided, thereby facilitating the conduct of HIRF tests.

[0023] Preferably, the bearing surface of the wooden support that contacts the main test section is formed as an arc-shaped surface that fits into the main test section.

[0024] As described above, by forming the bearing surface of the wooden support into an arcuate surface that matches the shape of the large section of the test specimen, the large section of the test specimen can be reliably supported.

[0025] Preferably, anti-friction elements are laid on the bearing surface of the wooden support.

[0026] According to the above configuration, by providing anti-friction components, the friction force can be effectively increased to support most of the test specimen, and the surface of most of the test specimen can be effectively prevented from being scratched by wood.

[0027] Preferably, the movable support further includes a connecting portion disposed between the plurality of support portions and used to connect the plurality of support portions together.

[0028] As described above, by providing a connecting part, the overall length of the movable support can be extended, thereby adapting to the requirements of bearing large sections of test specimens of different lengths.

[0029] Preferably, the connecting part includes a connecting body composed of multiple connecting longitudinal beams, multiple connecting transverse beams and multiple connecting diagonal braces. The connecting body is formed in a rectangular shape. The multiple connecting longitudinal beams and multiple connecting transverse beams are in a mutually orthogonal positional relationship. The multiple connecting diagonal braces are arranged between two opposite corners of the connecting body.

[0030] As described above, the connection body is composed of multiple connecting longitudinal beams, multiple connecting transverse beams, and multiple connecting diagonal braces, which ensures the overall structural strength of the connection.

[0031] Preferably, the connecting part further includes a connecting pulley, which is disposed at the bottom of the connecting body and is used to move the connecting part during assembly.

[0032] Preferably, the aforementioned connecting rollers do not come into contact with the ground during the transport of the aforementioned large section of the test piece.

[0033] As described above, by providing connecting rollers, the connecting part can be moved easily, which facilitates the assembly of the movable support before carrying out the HIRF test, and keeps the connecting rollers from contacting the ground when moving most of the test piece, effectively preventing damage to the connecting rollers.

[0034] Preferably, the movable support further includes a traction unit, which is disposed at the front end and rear end of the movable support and is used to drive the movable support to move under the action of an external force.

[0035] As described above, by providing a traction unit, the movable support can be easily moved by controlling the traction unit, resulting in a simple structure and convenient operation.

[0036] Preferably, the traction part is formed in a triangular shape and is detachably installed at the front and rear ends of the movable bracket.

[0037] Based on the above-described structure, by designing the traction unit in a triangular shape, the overall structural strength of the traction unit can be effectively guaranteed, as well as its detachability, making installation convenient and the structure simple.

[0038] Preferably, the movable part is fixedly connected to the bottom of the bearing part via a connecting plate, and the traction part is fixedly connected to the single ear piece of the movable part via traction ears.

[0039] As described above, this connection method allows the traction unit to easily drive the moving unit to perform steering and sliding movements. Attached Figure Description

[0040] With reference to the above objectives, the technical features of this utility model are clearly described in the following technical solutions, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of this utility model by way of example, without limiting the scope of the inventive concept.

[0041] Figure 1 This is a schematic diagram showing the overall structure of the movable support of this utility model.

[0042] Figure 2 This is a schematic diagram showing the overall structure of the movable support carrying a large section of the test piece according to the present invention.

[0043] Figure 3 This is a three-dimensional structural diagram showing the support portion of the movable bracket of this utility model.

[0044] Figure 4 This is a three-dimensional structural diagram showing the connecting part of the movable bracket of this utility model.

[0045] Figure 5 This is a three-dimensional structural schematic diagram showing the traction part of the movable bracket of this utility model.

[0046] Figure 6 This is a three-dimensional structural diagram showing the movable part of the movable bracket of this utility model.

[0047] Figure 7A This is a schematic diagram showing the connection between the crossbeam and the longitudinal beam of the movable bracket of this utility model. Figure 7B This is a schematic diagram showing the connection between the wooden support and the diagonal brace. Figure 7C This is a schematic diagram showing the connection between the moving part and the supporting part.

[0048] Figure 8 This is a schematic diagram showing the installation operation of the movable bracket of this utility model.

[0049] Figure 9A This is a schematic diagram illustrating one method of fixing the tension rope of the movable bracket of this utility model to the movable bracket. Figure 9B This is a schematic diagram illustrating another method of securing the tension rope and the movable bracket.

[0050] Figure 10 This is a schematic diagram showing the overall structure of the movable support of this utility model, with the tension rope fixed relative to the ground.

[0051] Figure 11 This is a schematic diagram of the overall structure of the existing test specimens used for HIRF testing.

[0052] Symbol Explanation

[0053] 1. Movable stand;

[0054] 11. Bearing section;

[0055] 111 Longitudinal beam;

[0056] 112 Crossbeam;

[0057] 113 Wooden support;

[0058] 114. Diagonal brace;

[0059] 12. Connecting parts;

[0060] 121. Connect the main body;

[0061] 1211 Connecting longitudinal beams;

[0062] 1212 Connecting beam;

[0063] 1213 Connecting diagonal bracing;

[0064] 122 Connect the two ears;

[0065] 123 Connect the roller skates;

[0066] 13. Traction unit;

[0067] 131 Traction body;

[0068] 132. Pulling on both ears;

[0069] 14. Moving parts;

[0070] 141 Roller;

[0071] 142 Connecting plate;

[0072] 143 Single earpiece;

[0073] 2.2' Large section test specimen;

[0074] LS bolt;

[0075] MS wood tip;

[0076] AZC mounting slot;

[0077] AZB mounting plate;

[0078] LJS tension rope;

[0079] QJD Jack. Detailed Implementation

[0080] Various embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.

[0081] Although this invention has been described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to the exemplary embodiments described below. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the invention as defined by the appended claims.

[0082] The following is for reference Figure 1 The overall structure of the movable support 1 of this utility model will be described. Figure 1 This is a schematic diagram showing the overall structure of the movable support 1 of this utility model.

[0083] like Figure 1 As shown, the movable support 1 of this utility model mainly includes a bearing part 11, a connecting part 12, a traction part 13 and a moving part 14.

[0084] The aforementioned support section 11 is provided in multiple parts, and the multiple support sections 11 are mainly made of non-metallic materials and are used to support the large section test piece 2 of the aircraft.

[0085] The connecting part 12 is provided between the plurality of bearing parts 11 and is used to connect the plurality of bearing parts 11 together.

[0086] The aforementioned traction unit 13 is disposed at the front end and rear end of the movable bracket 1 and is used to traction the entire movable bracket 1 to move under the action of external force.

[0087] The aforementioned movable part 14 is formed as a wheel assembly provided at the bottom of the movable support 1, and is used to drive the movable support 1 as a whole to move.

[0088] In addition, such as Figure 2 As shown, in specific use, the multiple support parts 11 of the movable support 1 of this utility model are connected together by the connecting part 12. After the large section of the test piece 2 is loaded onto the multiple support parts 11, the movable support 1 is moved by pulling the traction part 13 located at the front end, or the movable support 1 is moved by pushing the traction part 13 located at the rear end.

[0089] The overall dimensions (length × width × height) of the movable bracket 1 of this utility model are 13677mm × 6000mm × 2622mm. The main body of the movable bracket 1 is made of red pine or white pine and is integrally formed by riveting / screwing.

[0090] In the movable support 1 of this utility model, the bearing part 11, which is in direct contact with the main section of the test piece 2, is made of wood as a whole, while the remaining parts, such as the connecting part 12, the traction part 13, the moving part 14 and the connecting bolts, are made of metal or nylon. This ensures that the requirements for non-metallic materials for conducting HIRF tests are met in (c) above, while ensuring the overall support strength of the movable support 1.

[0091] The following is for reference Figures 3 to 6 The specific structure of each component of the movable support 1 of this utility model will be described.

[0092] <Bearing Section 11>

[0093] like Figure 3 As shown, the overall dimensions (length × width × height) of the support portion 11 of the movable bracket 1 of this utility model are 4177mm × 6000mm × 2238mm, and it is made of pine wood with a cross-section of 75mm × 130mm.

[0094] The aforementioned load-bearing part 11 is mainly composed of longitudinal beams 111, transverse beams 112, wooden supports 113, and diagonal braces 114.

[0095] Both the longitudinal beam 111 and the transverse beam 112 are formed into long strips with a rectangular cross-section. The longitudinal beam 111 extends in a direction perpendicular to the direction of flight of the aircraft, and the transverse beam 112 extends in a direction parallel to the direction of flight of the aircraft. By stacking the longitudinal beam 111 and the transverse beam 112 on each other and fixing them together with fasteners such as fixing bolts, a support base for supporting the support part 11 for supporting the large section of the test piece 2 is formed.

[0096] Multiple wooden supports 113 are erected on the support base of the support part 11, spaced apart from each other, along the flight direction of the aircraft, and the multiple wooden supports 113 extend in a direction perpendicular to the flight direction of the aircraft.

[0097] Specifically, such as Figure 3 As shown, the dimensions (length × width × height) of a single wooden support 113 are 1878mm × 6000mm × 160mm, meaning that the thickness of the surface of a single wooden support 113 in contact with the machine body is 160mm. By combining multiple wooden supports 113, the support strength of the load-bearing part 11 can be significantly improved.

[0098] In addition, the bearing surface of the wooden support 113 that contacts the large section test piece 2 is cut based on the outer surface of the fuselage to form an arc surface that fits the large section test piece 2, thereby effectively bearing the large section test piece 2.

[0099] In addition, two layers of rubber sheets of about 5mm can be laid on the bearing surface of the wooden support 113, which can effectively increase the friction to support most of the test piece 2 and effectively prevent the wooden support 113 from scratching the surface of most of the test piece 2.

[0100] The aforementioned diagonal brace 114 is positioned between the wooden support 113 and the supporting base composed of longitudinal beams 111 and transverse beams 112. One end of the brace is connected to the wooden support 113, and the other end is in contact with the supporting base. This effectively keeps the wooden support 113 in a vertical position, thereby ensuring the support strength of the supporting part 11.

[0101] As described above, the number of the above-mentioned support portion 11 and the number of wooden supports 113 provided on each support portion 11 can be appropriately selected according to the length and structural weight of the large section of the test piece 2 for carrying out the HIRF test. However, in general, the movable support 1 of this utility model adopts two support portions 11 and provides two wooden supports 113 on each support portion 11.

[0102] <Link 12>

[0103] like Figure 4 As shown, the connecting part 12 of the movable bracket 1 of this utility model is used to connect multiple bearing parts 11 together during the towing process, and mainly includes a connecting body 121, connecting ears 122 and connecting rollers 123.

[0104] The connecting body 121 of the connecting part 12 is composed of multiple connecting longitudinal beams 1211, multiple connecting transverse beams 1212 and multiple connecting diagonal braces 1213.

[0105] The aforementioned multiple connecting longitudinal beams 1211 and multiple connecting transverse beams 1212 are in a mutually orthogonal positional relationship and are generally formed into a rectangular shape. The aforementioned multiple connecting diagonal braces 1213 are arranged between two opposite corners of the connecting body 121 of the rectangle, thereby improving the overall structural strength.

[0106] Since the connecting part 12 does not directly contact the main section of the test piece 2 during the test, the connecting longitudinal beam 1211, connecting cross beam 1212 and connecting diagonal brace 1213 constituting the connecting body 121 can be made of steel to improve the overall structural strength.

[0107] The aforementioned connecting ears 122 are provided on the connecting longitudinal beam 1211 on the side of the connecting body 121 adjacent to the bearing part 11, so as to be connected to the bearing part 11. The aforementioned connecting pulley 123 is provided at the lower part of the connecting body 121 so as to move the connecting part 12 during the assembly of the movable bracket 1.

[0108] It should be noted that since the connecting pulley 123 of the connecting part 12 is not a structurally reinforced load-bearing component, it does not come into contact with the ground and does not need to bear any load during the transport of most of the test pieces, thereby avoiding damage to the connecting pulley 123.

[0109] In addition, legs are installed at the four corners of the rectangular connecting body 121 to facilitate the adjustment of the height of the connecting part 12 by means of a load-bearing device, thereby ensuring the installation of the connecting part 12 relative to the load-bearing part 11.

[0110] <Traction Unit 13>

[0111] like Figure 5 As shown, the traction part 13 of the movable bracket 1 of this utility model is formed in a roughly triangular shape, and mainly includes a traction body 131 and traction ears 132.

[0112] Similar to the connecting body 121 of the connecting part 12, the traction body 131 is made of steel beams, and a reinforcing beam can be provided between the two steel beams of the triangular traction body 131 to improve the overall structural strength.

[0113] Multiple traction ears 132 are provided on the bottom edge of the triangular traction body 131, and the traction part 13 is fixedly connected to the moving part 14 described later via the multiple traction ears 132.

[0114] In addition, the aforementioned traction unit 13 is detachably installed at the front and rear ends of the movable bracket 1. During transport, the U-shaped ring formed on the traction unit 13 is connected to the forklift, and the movable bracket 1 is moved by the movement of the forklift.

[0115] Specifically, the movable support 1 can be moved by pulling the traction part 13 located at the front end or by pushing the movable support 1 through the traction part 13 located at the rear end, and the traction part 13 can be removed after the large part of the test piece 2 is transported to the test site, thereby preventing the traction part 13, which is made of steel, from having an adverse effect on the HIRF test.

[0116] <Moving Section 14>

[0117] like Figure 6As shown, the moving part 14 is formed in the form of a wheel assembly and is mainly composed of a rolling wheel 141, a connecting plate 142 and a single lug 143.

[0118] The aforementioned rolling wheel 141 is made of nylon material, while the wheel fork and axle are metal structures. The aforementioned connecting plate 142 and single lug 143 are made of Q235 steel plate, thereby ensuring the support strength for the large section of the test piece 2 while ensuring mobility.

[0119] The aforementioned movable part 14 is fixedly connected to the bottom of the bearing part 11 via the connecting plate 142, and is connected to the traction double ears 132 of the traction part 13 via the single ear piece 143, thereby enabling the traction part 13 to drive the rotation of the rolling wheel 141 and realize the movement of the entire movable bracket 1 relative to the ground.

[0120] Next, refer to Figures 7A to 7C The connection method of each component of the movable support 1 of this utility model will be described.

[0121] like Figure 7A As shown, in the bearing section 11, the longitudinal beams 111 and the transverse beams 112 are distributed intersectingly. At the intersection, they are fixedly connected by bolts LS as fasteners. The bolt heads of the bolts LS are usually kept flush with the upper surface of the longitudinal beams 111 to prevent the bolts LS from scratching the surface of most of the test specimen 2.

[0122] like Figure 7B As shown, in the bearing part 11, the wooden support 113 and the diagonal brace 114 are fixedly connected by a wooden dowel MS as a fixing member. In order to ensure that the wooden support 113 and the diagonal brace 114 are connected together by the wooden dowel MS, an L-shaped mounting groove AZC is formed on the diagonal brace 114 to facilitate the insertion and fixing of the wooden dowel MS.

[0123] like Figure 7C As shown, in the movable bracket, the movable part 14 and the supporting part 11 are connected by a wooden board, namely the mounting plate AZB, with a thickness of about 100mm. Specifically, the connecting plate 142 of the movable part 14 is attached to the lower surface of the mounting plate AZB and is fixed to the bottom of the supporting part 11 by fasteners such as fixing bolts.

[0124] The following is for reference Figures 8 to 10 The present invention describes the specific steps and precautions for using the movable support 1 of this invention to transport most of the test specimen 2 before conducting the HIRF test.

[0125] (1) Before conducting the test, the positioning line of the movable support 1 needs to be planned in advance in the test site, and the placement position of the movable support 1 needs to be confirmed.

[0126] (2) Based on the actual site conditions, the ground is hardened at the fixed point between the movable support 1 and the ground.

[0127] (3) Figure 8 As shown, after the movable support 1 is transported to the test site by trailer, in order to prevent some wheels from not being able to contact the ground due to uneven ground, four jacks QJD are set around the movable support 1 to ensure that the movable support 1 is in a horizontal position.

[0128] (4) After the large section test piece 2 is loaded onto the movable bracket 1, during the movement and testing process, the large section test piece 2 needs to be tied to the movable bracket 1 using tension ropes LJS. Before moving the bracket, check all the connections of tension ropes LJS and the connection between the trailer and the traction unit 13 to ensure that the bolts are tight.

[0129] There are two specific bundling methods:

[0130] like Figure 9A As shown, one end of the tension rope LJS is fixed to the main section of the test piece 2, and the other end is fixed to the longitudinal beam 111 of the movable support 1.

[0131] like Figure 9B As shown, both ends of the tension rope LJS are fixed to the crossbeam 112 of the movable bracket 1.

[0132] (5) During transportation, the U-shaped ring on the traction unit 13 is connected to the trailer, and the trailer is used to move the movable support 1. During transportation, the speed is kept not greater than 10m / min to prevent the large section of the test piece 2 from sliding out along the flight direction. The large section of the test piece 2 is pulled by tension rope LJS within 10 meters on both sides of the movable support 1. If, for example, there are signs that the sample section is sliding out along the flight direction, the vehicle needs to be stopped immediately.

[0133] (6) After the movable bracket 1 is moved into place, as Figure 10 As shown, a tension rope LJS is used to fix the majority section of test specimen 2 (heading and lateral) to the ground. One end of the tension rope LJS is fixed to the majority section of test specimen 2, and the other end is fixed to the ground.

[0134] In addition, avoid towing operations in windy weather. It is best to use the trailer in calm or light wind conditions. If strong winds occur during the test, after the test piece is in place, consider placing 8 tension ropes evenly around the trailer relative to the ground (4 at the front and 4 at the back) to prevent the test piece from tipping over with the trailer.

[0135] (Technical effect)

[0136] The movable bracket 1 of this utility model is made of wood as a whole and is integrally formed by riveting. The wheel assembly is made of nylon. Only a small amount of metal is used at the connection between the crossbeam and the longitudinal beam at the bottom of the bracket and at the connection between the wheel and the bracket, so as to effectively meet the special requirements of the non-metallic bracket required for HIRF test.

[0137] Furthermore, the movable support 1 of this utility model adopts a structure that combines a wooden bracket with a detachable metal connector. Therefore, when the support moves, it can provide sufficient rigidity through the metal connector, and when the support moves to the test site, it can meet the special requirements of non-metallic and non-solid components through the detachable metal connector.

[0138] Although the structure and working principle of this utility model have been described above in conjunction with preferred embodiments, those skilled in the art should recognize that the above examples are merely illustrative and do not constitute a limitation on this utility model. Modifications and variations can be made to this utility model within the spirit and scope of the claims, and all such modifications and variations will fall within the protection scope of this utility model.

Claims

1. A movable support (1) for a large section test piece (2) of a transport aircraft, characterized in that The movable support (1) includes: Multiple support sections (11), each consisting of a longitudinal beam (111), a transverse beam (112), a wooden support (113), and a diagonal brace (114), are used to support the large section of the test piece (2). The longitudinal beam (111) and the transverse beam (112) are stacked and fixed together to form the support base of the support section (11). Multiple wooden supports (113) are erected on the support base at intervals. The diagonal brace (114) is disposed between the wooden support (113) and the support base. A movable part (14) is provided at the bottom of the movable support (1) and is used to move the movable support (1).

2. The movable support (1) as described in claim 1, characterized in that, The bearing surface of the wooden support (113) that contacts the large section test piece (2) is formed as an arc surface that fits into the large section test piece (2).

3. The movable support (1) as described in claim 2, characterized in that, Anti-friction elements are laid on the bearing surface of the wooden support (113).

4. The movable support (1) as described in claim 1, characterized in that, The movable support (1) also includes: A connecting part (12) is disposed between the plurality of support parts (11) and is used to connect the plurality of support parts (11) together.

5. The movable support (1) as described in claim 4, characterized in that, The connecting part (12) includes a connecting body composed of multiple connecting longitudinal beams (1211), multiple connecting transverse beams (1212), and multiple connecting diagonal braces (1213), the connecting body being rectangular in shape. The plurality of connecting longitudinal beams (1211) and the plurality of connecting transverse beams (1212) are in a mutually orthogonal positional relationship, and the plurality of connecting diagonal braces (1213) are arranged between two diagonal portions of the connecting body.

6. The movable support (1) as described in claim 5, characterized in that, The connecting part (12) further includes a connecting slide (123), which is disposed at the bottom of the connecting body and is used to move the connecting part (12) during assembly.

7. The movable support (1) as described in claim 6, characterized in that, The connecting roller (123) does not come into contact with the ground during the transport of the main section of the test piece (2).

8. A mobile stand (1) as claimed in claim 4, characterized in that The movable support (1) also includes: The traction part (13) is disposed at the front end and the rear end of the movable bracket (1) and is used to drive the movable bracket (1) to move under the action of external force.

9. The movable support (1) as described in claim 8, characterized in that, The traction part (13) is formed in a triangular shape and is detachably installed at the front and rear ends of the movable bracket (1).

10. The movable support (1) as described in claim 8, characterized in that, The moving part (14) is fixedly connected to the bottom of the supporting part (11) via a connecting plate (142), and the traction part (13) is fixedly connected to the single ear piece (143) of the moving part (14) via traction ears (132).

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