Equipment for long-distance transportation and storage of aircraft APU

Abstract

The invention relates to the field of aircraft support equipment, in particular to an aircraft APU long-distance transportation and storage device which comprises an outer fixing frame, an inner suspension and an auxiliary hanging bracket, a horizontal hanging point is installed on the auxiliary hanging bracket, the auxiliary hanging bracket is connected with the inner suspension, and the horizontal hanging point is movably connected to the auxiliary hanging bracket. A vertical suspension point is mounted on the inner suspension, the inner suspension is fixedly connected with the auxiliary suspension, the outer fixing frame is mounted above the tray, and the shock pad is mounted between the outer fixing frame and the inner suspension. The product adopts a frame-type design and is provided with a plurality of reinforcing supports, so that the product has good strength and rigidity when bearing an APU (Auxiliary Power Unit); the partial structure of the product adopts an adjustable and detachable design, so that a technician can conveniently mount, dismount or maintain the APU; the shock pad and the tray can effectively absorb vibration of the APU during long-distance transportation, and damage to the APU caused by vibration is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft support equipment, and specifically to a device for long-distance transportation and storage of aircraft APU. Background Art

[0002] An APU (auxiliary power unit) is a device for supplying power and gas to an aircraft parked on the ground. Since the APU is relatively large in volume, transportation equipment is usually required to move the APU.

[0003] The existing APU transportation equipment mainly consists of a rigid welded frame, directional wheels, swivel wheels, a towing bar, a connecting support, and a suspension point support. The connecting support is installed on the left and right side columns of the welded frame, the suspension point support is installed on the middle column of the welded frame, the directional wheels and swivel wheels are installed below the welded frame, and the APU is directly fixed to the connecting support and the suspension point support through bolts and other fasteners, and the transportation of the APU is realized by towing the towing bar. The existing APU transportation equipment has the following disadvantages: the vibration during long-distance transportation will cause wear to the bolts and the bolt holes on the APU, and the APU may be damaged. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A device for long-distance transportation and storage of aircraft APU, comprising an outer fixed frame, an inner suspension and a sub-hanger. A horizontal lifting point for connecting the connection holes on the left and right sides of the APU body is installed on the sub-hanger, and the sub-hanger is connected to the inner suspension. The horizontal lifting point is movably connected to the sub-hanger. A vertical lifting point for connecting the connection hole at the top of the APU body is installed on the inner suspension, and the inner suspension is fixedly connected to the sub-hanger. It also includes shock pads and a tray. The outer fixed frame is installed above the tray, and the shock pads are installed between the outer fixed frame and the inner suspension. In this product, the outer fixed frame is used to fix the APU, the shock pads are used to eliminate the vibration of the APU during transportation, the inner suspension is used to fix the sub-hanger and the vertical lifting point, the sub-hanger is used to connect the inner suspension and install the horizontal lifting point, and the tray is used to support the APU and transport the APU. The tray can also reduce part of the vibration. The bottom of the tray has the function of a forklift slot, which is convenient for the overall handling and transfer. When this product needs to be used, move the horizontal lifting point to the outermost side, adjust the installation gap of the APU to the maximum to prevent collision, then manually carry the APU into the inner part of the outer fixed frame, align the installation holes on the APU body with the holes on the vertical lifting point, and use fasteners to connect them. Then move the horizontal lifting points on both sides inward respectively, align them with the installation holes on both sides of the APU body, and use fasteners to connect them. Then fix the horizontal lifting points. At this time, the APU is installed. During long-distance transportation, the vibration generated by the APU will be effectively absorbed by the shock pads and the tray, greatly reducing the damage caused by vibration to the APU.

[0006] As a further solution of the present invention: The outer fixed frame includes a base and a connecting piece. The base is installed above the tray through fasteners and is further fixed by using the connecting piece.

[0007] As a further solution of the present invention: The base is made of angle steel material, the connecting piece is made of channel steel material, and the base and the connecting piece are further fixed by welding.

[0008] As a further solution of the present invention: Installation holes are provided on the outer fixed frame, and it can be removed from the tray, so that it can be fixed at any position and can be used for fixed support during the functional test of the APU. When the APU needs a functional test, it is not necessary to remove the APU and install it on a designated test jig, with diverse functions.

[0009] As a further solution of the present invention: The shock pads are made of rubber material, with low price and good shock absorption effect. The tray is made of wood material, with easily available raw materials, convenient for processing and replacement.

[0010] As a further solution of the present invention: The tray is composed of pine boards and wooden squares, with good connection firmness and impact resistance and a long service life.

[0011] As a further solution of the present invention: The inner suspension includes a suspension body, a connecting plate, a first mounting plate, a second mounting plate and a third mounting plate. The connecting plate is connected to the shock pad. The first mounting plate is used to mount the vertical suspension point. Both the second mounting plate and the third mounting plate are connected to the auxiliary hanger.

[0012] As a further solution of the present invention: The suspension body, the connecting plate, the first mounting plate, the second mounting plate and the third mounting plate are all made of steel and connected by welding. The suspension body is made of rectangular steel pipe, with easily available raw materials and convenient for processing.

[0013] As a further solution of the present invention: The auxiliary hanger includes a hanger body, a fourth mounting plate, a fifth mounting plate, a connecting sleeve and a locking member. Both the fourth mounting plate and the fifth mounting plate are connected to the inner suspension. The horizontal suspension point is installed in the connecting sleeve and locked by the locking member. Just loosen the locking member to move the horizontal suspension point, and the installation gap of the APU can be adjusted. After the APU is installed, tighten the locking member to fix the horizontal suspension point.

[0014] As a further solution of the present invention: The locking member uses a locking screw, and the hanger body uses a square pipe, with easily available raw materials and convenient for replacement.

[0015] As a further solution of the present invention: The vertical suspension point is welded by Q235 steel plate.

[0016] As a further solution of the present invention: The horizontal suspension point includes a connecting seat, a retaining ring, a washer and a bolt. One side of the connecting seat is connected to the connecting sleeve, and a retaining ring and a washer are installed on the other side of the connecting seat and fixed by the bolt.

[0017] As a further solution of the present invention: The washer uses a spring washer, and the bolt uses a hexagon bolt.

[0018] As a further solution of the present invention: It further includes a box cover. The box cover covers the outside of the outer fixing frame and forms a closed structure with the tray. The box cover is used for the protection of the outer fixing frame and the APU during transportation, and is also beneficial for dust prevention and waterproofing of the APU during storage, without the need for specific dust-proof covers and waterproof covers.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This product adopts a frame design with multiple strengthening supports, making it have good strength and stiffness when carrying the APU; Some structures of this product adopt adjustable and detachable designs, which are convenient for technicians to install, disassemble or maintain the APU; The shock pad and the tray can effectively absorb the vibration of the APU during long-distance transportation, greatly reducing the damage caused by vibration to the APU. Description of the Drawings

[0021] Figure 1 This is a perspective view of the device for long - distance transportation and storage of aircraft APU in the embodiments of the present invention.

[0022] Figure 2 This is an enlarged view of part A of the device for long - distance transportation and storage of aircraft APU in the embodiments of the present invention.

[0023] Figure 3 This is a schematic structural view of the existing APU transportation device.

[0024] In the figure: 1 - outer fixed frame, 2 - shock pad, 3 - inner suspension, 4 - auxiliary hanger, 5 - vertical lifting point, 6 - horizontal lifting point, 7 - tray, 11 - base, 12 - connecting piece, 30 - suspension body, 31 - connecting plate, 32 - first mounting plate, 33 - second mounting plate, 34 - third mounting plate, 40 - hanger body, 41 - fourth mounting plate, 42 - fifth mounting plate, 43 - connecting sleeve, 44 - locking piece, 60 - connecting seat, 61 - retaining ring, 62 - washer, 63 - bolt. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] The following describes the specific implementation of the present invention in detail in conjunction with specific embodiments.

[0027] Embodiment 1. Please refer to Figure 1 - Figure 2 , a device for long - distance transportation and storage of aircraft APU, including an outer fixed frame 1, an inner suspension 3 and an auxiliary hanger 4. A horizontal lifting point 6 for connecting the connection holes on the left and right sides of the APU body is installed on the auxiliary hanger 4. The horizontal lifting point 6 is movably connected to the auxiliary hanger 4. A vertical lifting point 5 for connecting the connection holes on the top of the APU body is installed on the inner suspension 3 and the inner suspension 3 is fixedly connected to the auxiliary hanger 4. The device for long - distance transportation and storage of aircraft APU further includes a shock pad 2 and a tray 7. The outer fixed frame 1 is installed above the tray 7, and the shock pad 2 is installed between the outer fixed frame 1 and the inner suspension 3.

[0028] Refer to Figure 3, the existing APU transport equipment mainly consists of a rigid welded frame a, directional wheels b, swivel wheels c, a towing bar d, connecting supports e, connecting supports f, and a lifting point support g. Among them, the connecting supports e and f are installed on the left and right side columns of the welded frame a, the lifting point support g is installed on the middle column of the welded frame a, and the directional wheels b and swivel wheels c are installed below the welded frame a. The transport of the APU is achieved by towing the towing bar d. The existing APU transport equipment has the following disadvantages: The connecting supports e, f, and the lifting point support g are directly installed on the welded frame a, and the APU is directly fixed on the connecting supports e, f, and the lifting point support g through fasteners such as bolts. The vibration during long-distance transportation will cause wear to the bolts and the bolt holes on the APU body, and damage may occur; The welded frame a is an integral welded structure and cannot be finely adjusted. After long-term use, the equipment will deform, resulting in displacement of the connecting holes of the connecting supports e, f, and the lifting point support g, and the APU cannot be accurately installed; This equipment has an open structure, and the transport and storage of the APU cannot be shielded, and a specific dust cover is required. Moreover, this equipment can only achieve transportation and storage. When the APU needs to be tested, the APU still needs to be removed from above and installed on a designated test jig, and its functionality is relatively single. In this product, the outer fixing frame 1 is used to fix the APU, the shock-absorbing pad 2 is used to eliminate the vibration of the APU during transportation, the inner suspension 3 is used to fix the auxiliary hanger 4 and the vertical lifting point 5, the auxiliary hanger 4 is used to connect the inner suspension 3 and install the horizontal lifting point 6, the tray 7 is used to support the APU and transport the APU, and the tray 7 can also reduce part of the vibration. Further, the bottom of the tray 7 has the function of a forklift slot. The tray 7 is lifted by a forklift, and the device is moved through the movement of the forklift, which is convenient for overall handling and transfer. When this product needs to be used, the horizontal lifting point 6 is moved to the outermost side of the auxiliary hanger 4, and the installation gap of the APU is adjusted to the maximum to prevent collision. Then, the APU is manually carried into the inner part of the outer fixing frame 1, the installation holes on the APU body are aligned with the holes on the vertical lifting point 5, and they are connected using fasteners. Then, the horizontal lifting points 6 on both sides are respectively moved inward to the auxiliary hanger 4, aligned with the installation holes on both sides of the APU body, and they are connected using fasteners. Then, the horizontal lifting points 6 are fixed. At this time, the installation of the APU is completed. During long-distance transportation, the vibration generated by the APU will be effectively absorbed by the shock-absorbing pad 2 and the tray 7, greatly reducing the damage caused by the vibration to the APU.

[0029] Embodiment 2. A device for long-distance transportation and storage of an aircraft APU includes an outer fixed frame 1, an inner suspension 3, and a secondary hanger 4. A horizontal lifting point 6 for connecting the connection holes on the left and right sides of the APU body is installed on the secondary hanger 4. The horizontal lifting point 6 is movably connected to the secondary hanger 4. A vertical lifting point 5 for connecting the connection hole at the top of the APU body is installed on the inner suspension 3, and the inner suspension 3 is fixedly connected to the secondary hanger 4. The device for long-distance transportation and storage of an aircraft APU further includes a shock pad 2 and a tray 7. The outer fixed frame 1 is installed above the tray 7, and the shock pad 2 is installed between the outer fixed frame 1 and the inner suspension 3. The outer fixed frame 1 includes a base 11 and a connecting member 12. The base 11 is installed above the tray 7 through fasteners and is further fixed by the connecting member 12. Further, the base 11 is made of angle steel material, and the connecting member 12 is made of channel steel material. The base 11 and the connecting member 12 are further fixed by welding, with good connection firmness. The outer fixed frame has certain strength and corrosion resistance and is not easily deformed.

[0030] Further, the outer fixed frame 1 is provided with mounting holes, and the outer fixed frame 1 can be removed from the tray 7, so that the outer fixed frame 1 can be fixed at any position and can be used as a fixed support during the APU function test. When the APU needs a function test, it is not necessary to remove the APU and install it on a designated test jig, which greatly reduces the labor intensity and the time spent, and has diverse functions.

[0031] Further, the shock pad 2 is made of rubber material, with low price and good shock absorption effect. The tray 7 is made of wood material, with easily available raw materials, convenient for processing and replacement. Further, the tray 7 is composed of pine boards and wooden squares, with good connection firmness and impact resistance and a long service life.

[0032] Embodiment 3. A device for long-distance transportation and storage of an aircraft APU includes an outer fixed frame 1, an inner suspension 3, and a secondary suspension hanger 4. A horizontal lifting point 6 for connecting the connection holes on the left and right sides of the APU body is installed on the secondary suspension hanger 4. The horizontal lifting point 6 is movably connected to the secondary suspension hanger 4. A vertical lifting point 5 for connecting the connection hole at the top of the APU body is installed on the inner suspension 3 and the inner suspension 3 is fixedly connected to the secondary suspension hanger 4. The device for long-distance transportation and storage of an aircraft APU further includes a shock pad 2 and a tray 7. The outer fixed frame 1 is installed above the tray 7. The shock pad 2 is installed between the outer fixed frame 1 and the inner suspension 3. The inner suspension 3 includes a suspension body 30, a connecting plate 31, a first mounting plate 32, a second mounting plate 33, and a third mounting plate 34. The connecting plate 31 is connected to the shock pad 2. The first mounting plate 32 is used for installing the vertical lifting point 5. Both the second mounting plate 33 and the third mounting plate 34 are connected to the secondary suspension hanger 4. Further, the suspension body 30, the connecting plate 31, the first mounting plate 32, the second mounting plate 33, and the third mounting plate 34 are all made of steel and are connected by welding. The overall connection firmness and shock resistance are good. The suspension body 30 is made of rectangular steel pipe, with easily available raw materials and convenient for processing.

[0033] Embodiment 4. A device for long-distance transportation and storage of an aircraft APU includes an outer fixed frame 1, an inner suspension 3, and a secondary suspension hanger 4. A horizontal lifting point 6 for connecting the connection holes on the left and right sides of the APU body is installed on the secondary suspension hanger 4. The horizontal lifting point 6 is movably connected to the secondary suspension hanger 4. A vertical lifting point 5 for connecting the connection hole at the top of the APU body is installed on the inner suspension 3 and the inner suspension 3 is fixedly connected to the secondary suspension hanger 4. The device for long-distance transportation and storage of an aircraft APU further includes a shock pad 2 and a tray 7. The outer fixed frame 1 is installed above the tray 7. The shock pad 2 is installed between the outer fixed frame 1 and the inner suspension 3. The secondary suspension hanger 4 includes a hanger body 40, a fourth mounting plate 41, a fifth mounting plate 42, a connecting sleeve 43, and a locking member 44. Both the fourth mounting plate 41 and the fifth mounting plate 42 are connected to the inner suspension 3. The horizontal lifting point 6 is installed in the connecting sleeve 43 and is locked by the locking member 44. Just loosen the locking member 44 to move the horizontal lifting point 6 to the outermost side of the secondary suspension hanger 4, and then the installation clearance of the APU can be adjusted. After the APU is installed, tighten the locking member 44 to fix the horizontal lifting point 6. Further, the locking member 44 uses a locking screw, which is easy to obtain and convenient to operate. At this time, just loosen the locking screw 44 to move the horizontal lifting point 6 to the outermost side of the secondary suspension hanger 4. The hanger body 40 is made of square pipe, with easily available raw materials and convenient for replacement.

[0034] Further, the vertical lifting point 5 is welded by Q235 steel plate, which is not easy to deform as a whole and has a long service life.

[0035] Embodiment 5. A device for long-distance transportation and storage of an aircraft APU includes an outer fixed frame 1, an inner suspension 3, and a secondary hanger 4. A horizontal lifting point 6 for connecting the connection holes on the left and right sides of the APU body is installed on the secondary hanger 4. The horizontal lifting point 6 is movably connected to the secondary hanger 4. A vertical lifting point 5 for connecting the connection hole at the top of the APU body is installed on the inner suspension 3, and the inner suspension 3 is fixedly connected to the secondary hanger 4. The device for long-distance transportation and storage of an aircraft APU further includes a shock pad 2 and a tray 7. The outer fixed frame 1 is installed above the tray 7. The shock pad 2 is installed between the outer fixed frame 1 and the inner suspension 3. The secondary hanger 4 includes a hanger body 40, a fourth mounting plate 41, a fifth mounting plate 42, a connecting sleeve 43, and a locking member 44. The fourth mounting plate 41 and the fifth mounting plate 42 are both connected to the inner suspension 3. The horizontal lifting point 6 is installed in the connecting sleeve 43 and locked by the locking member 44. The horizontal lifting point 6 includes a connecting seat 60, a retaining ring 61, a washer 62, and a bolt 63. One side of the connecting seat 60 is connected to the connecting sleeve 43. The other side of the connecting seat 60 is installed with a retaining ring 61 and a washer 62 and fixed by a bolt 63.

[0036] Further, the washer 62 is a spring washer, and the bolt 63 is a hexagon bolt, which are easily available in the market and convenient for replacement.

[0037] Embodiment 6. A device for long-distance transportation and storage of an aircraft APU includes an outer fixed frame 1, an inner suspension 3, and a secondary hanger 4. A horizontal lifting point 6 for connecting the connection holes on the left and right sides of the APU body is installed on the secondary hanger 4. The horizontal lifting point 6 is movably connected to the secondary hanger 4. A vertical lifting point 5 for connecting the connection hole at the top of the APU body is installed on the inner suspension 3, and the inner suspension 3 is fixedly connected to the secondary hanger 4. The device for long-distance transportation and storage of an aircraft APU further includes a box cover, a shock pad 2, and a tray 7. The outer fixed frame 1 is installed above the tray 7. The shock pad 2 is installed between the outer fixed frame 1 and the inner suspension 3. The box cover covers the outside of the outer fixed frame 1, and the box cover and the tray 7 form a closed structure. The box cover is used for the protection of the outer fixed frame 1 and the APU during transportation, and is also beneficial for dust prevention and waterproofing of the APU during storage, without the need for specific dust-proof covers and waterproof covers. The box cover is composed of pine boards and composite boards, which are easy to manufacture and have good use effects.

[0038] It should be noted that in the present invention, unless otherwise clearly specified and limited, terms such as "rotation", "fixation", "provided with", etc. should be understood in a broad sense. For example, it can be a welded connection, a bolt connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for long-distance transportation and storage of an aircraft APU, comprising an outer fixed frame, an inner suspension and a secondary hanger. A horizontal lifting point for connecting connection holes on the left and right sides of the APU body is installed on the secondary hanger, and the horizontal lifting point is movably connected to the secondary hanger. A vertical lifting point for connecting the connection hole at the top of the APU body is installed on the inner suspension, and the inner suspension is fixedly connected to the secondary hanger, characterized in that, It further includes a shock pad and a tray. The outer fixing frame is installed above the tray, and the shock pad is installed between the outer fixing frame and the inner suspension.

2. The device for long-distance transportation and storage of an aircraft APU according to claim 1, characterized in that, The outer fixing frame includes a base and a connecting piece. The base is installed above the tray through fasteners and is further fixed by the connecting piece.

3. The device for long-distance transportation and storage of an aircraft APU according to claim 2, characterized in that The base is made of angle steel material, and the connecting piece is made of channel steel material. The base and the connecting piece are further fixed by welding.

4. The device for long-distance transportation and storage of an aircraft APU according to claim 1, characterized in that, The auxiliary hanger includes a hanger body, a fourth mounting plate, a fifth mounting plate, a connecting sleeve and a locking piece. The fourth mounting plate and the fifth mounting plate are both connected to the inner suspension. The horizontal lifting point is installed in the connecting sleeve and locked by the locking piece.

5. The device for long-distance transportation and storage of an aircraft APU according to claim 4, characterized in that, The locking piece uses a locking screw, and the hanger body uses a square pipe.

6. The device for long-distance transportation and storage of aircraft APU according to claim 1, characterized in that The inner suspension includes a suspension body, a connecting plate, a first mounting plate, a second mounting plate and a third mounting plate. The connecting plate is connected to the shock pad. The first mounting plate is used to install the vertical lifting point. The second mounting plate and the third mounting plate are both connected to the auxiliary hanger.

7. The device for long-distance transportation and storage of an aircraft APU according to claim 6, characterized in that, The suspension body, the connecting plate, the first mounting plate, the second mounting plate and the third mounting plate are all made of steel and connected by welding.

8. The device for long-distance transportation and storage of aircraft APU according to claim 4, wherein The horizontal lifting point includes a connecting seat, a retaining ring, a washer and a bolt. One side of the connecting seat is connected to the connecting sleeve. The other side of the connecting seat is installed with a retaining ring and a washer and fixed by a bolt.

9. The device for long-distance transportation and storage of an aircraft APU according to claim 1, characterized in that, It further includes a box cover. The box cover covers the outside of the outer fixing frame and forms a closed structure with the tray.

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