Aircraft cargo loading and unloading transfer hanging frame
By designing an aircraft cargo loading and unloading transfer rack, using struts and lifting rings to limit the swing of the crane cables, and combining quick-release locks and a level, the problem of crane cable tilting was solved, achieving a safe and efficient cargo loading and unloading process, and supporting rapid transfer.
Patent Information
- Application Number
- CN202423270185.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
When a crane is used to lift cargo in an aircraft cargo hold, if the width of the lifting point of the cargo is inconsistent with that of the electric crane, or if there is only one lifting point, the crane cable may tilt, affecting loading efficiency and safety.
Design an aircraft cargo loading and unloading transfer rack, including a strut, an upper lifting ring, a lower lifting ring, a guide rail lock, and a tie ring lock. The connection structure between the strut and the lifting ring restricts the swing of the crane cable, a level is added to observe the angle, and it is fixed to the aircraft floor by a quick-release lock to prevent wear.
It effectively solves the problem of crane cable tilting, ensuring the safety and efficiency of the lifting process, meeting the loading and unloading needs of goods of different shapes, and its lightweight design facilitates quick transport.
Smart Images
Figure CN223619789U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to, but is not limited to, the technical field of aircraft maintenance support and aircraft mission loading systems, and particularly to an aircraft cargo loading and unloading transfer rack. Background Technology
[0002] The aircraft mission system's electric crane adopts a symmetrical, top-accessible fixed design. The crane moves within the cargo hold, lifting cargo during loading or unloading and then moving back and forth along the top guide rails to achieve cargo loading and unloading functions.
[0003] According to the aircraft maintenance manual and usage restrictions, when a crane lifts cargo into the flight area (i.e., the front area of the cargo hold), the crane cable must not deviate from the vertical. The sway angle of the crane cable in the middle area of the cargo hold should not exceed ±4°, and the sway angle of the crane cable in the rear area of the cargo hold should not exceed ±8°. However, most of the cargo carried by aircraft during transshipment and transport is non-standard, the lifting points are inconsistent with the width of the electric crane, or the cargo has only one lifting point. In such cases, loading and unloading cargo can easily cause the electric crane cable to tilt, which brings great difficulties to cargo loading and affects the aircraft's support efficiency. Utility Model Content
[0004] The purpose of this utility model is to solve the above-mentioned technical problems. This utility model provides an aircraft cargo loading and unloading transfer rack to solve the problems of existing crane lifting methods in aircraft cargo holds. If the width of the cargo lifting point is inconsistent with that of the electric crane, or if the cargo has only one lifting point, the electric crane cable will tilt, which will cause great difficulties in cargo loading and affect the aircraft's support efficiency.
[0005] The technical solution of this utility model: This utility model embodiment provides an aircraft cargo loading and unloading transfer rack, including: a support rod 1, an upper lifting ring 2, a lower lifting ring 3, a guide rail lock 4, and a tie ring lock 5;
[0006] The support rod 1 is configured as a square beam structure. The top of both ends of the support rod 1 are symmetrically provided with upper lifting rings 2 and the bottom of both ends are symmetrically provided with lower lifting rings 3. The upper lifting rings 2 and lower lifting rings 3 on the same side are symmetrically provided and are connected by a load-bearing pin that passes through the end of the support rod 1.
[0007] Two symmetrically arranged upper lifting rings 2 are respectively connected to the crane cables of the electric cranes symmetrically arranged on the top of the aircraft cargo hold, which are used to limit the swing of the crane cables on both sides of the direction of movement, so that the crane cables always remain vertical in the vertical direction; two symmetrically arranged lower lifting rings 3 are used to connect to the lifting ropes of the cargo.
[0008] A guide rail lock 4 is provided at each end of the support rod 1 for locking the adapter to the guide rail groove on the cargo hold floor. A tethering ring lock 5 is provided at one end of the middle of the support rod 1 for tethering the adapter to the tethering ring on the cargo hold floor.
[0009] Optionally, in the aircraft cargo loading and unloading transfer racks described above,
[0010] The support rod 1 has through holes at both ends, and a load-bearing pin passes through the through holes. The relative positions of the load-bearing pin and the through holes are restricted by nuts at both ends. The top through hole of the load-bearing pin is connected to the upper lifting ring 2, and the bottom through hole is connected to the lower lifting ring 3. By using a connection structure that shares a load-bearing pin, the support rod 1 is protected from vertical loads.
[0011] Optionally, in the aircraft cargo loading and unloading transfer racks described above,
[0012] Each end of the support rod 1 is equipped with a guide rail lock 4 that runs horizontally through the end of the support rod 1. When the adapter hanger is connected to the guide rail groove of the warehouse floor, the guide rail lock 4 is connected to the guide rail groove in a direction perpendicular to the warehouse floor after the support rod 1 of the square beam structure is rotated by 90°.
[0013] Optionally, in the aircraft cargo loading and unloading transfer rack as described above, two parallel stepped guide rail grooves are provided on the cargo hold floor. The top groove of each stepped guide rail groove is composed of alternating circular and square grooves, and the bottom groove is a rectangular groove covering the top groove. Each stepped guide rail groove is connected to a guide rail latch 4 on one side.
[0014] Each of the guide rail latches 4 includes: a connecting base, a screw rod vertically disposed on one end face of the connecting base, a limiting block movably sleeved on the screw rod, and a disc nut 9 screwed onto the screw rod; wherein, the connecting base is configured to cooperate with the circular groove of the top layer of the guide rail groove. By placing the connecting base from the top layer of the groove into the circular groove of the bottom layer, and moving it a preset distance so that the screw rod is positioned in the circular groove, the limiting block is placed in the circular groove, thereby restricting the movement of the guide rail latch 4 in the stepped guide rail groove, and locking the support rod 1 by the disc nut 9.
[0015] Optionally, in the aircraft cargo loading and unloading transfer racks described above,
[0016] A tethering ring lock 5 is fixedly installed in the middle of one side of the support rod 1. When the tethering ring of the transfer bracket is connected to the tethering ring of the warehouse floor, the tethering ring of the warehouse floor is flipped and sleeved on the tethering ring lock 5. The tethering ring and the tethering ring lock 5 are connected by the pin 8 on the tethering ring lock 5.
[0017] Optionally, the aircraft cargo loading and unloading transfer rack described above also includes: a level 6;
[0018] A level 6 is fixedly installed in the middle of the other side of the support rod 1, which is used to maintain the horizontal angle of the support rod 1 by observation during the loading and unloading of goods.
[0019] Optionally, the aircraft cargo loading and unloading transfer rack described above also includes: abrasion-resistant sleeve 7;
[0020] The two ends are symmetrically fitted with anti-wear sleeves 7 inside the lifting ring. The anti-wear sleeves 7 are made of rubber and are used to prevent wear between the adapter and the warehouse floor during transport.
[0021] The beneficial effects of this utility model are as follows: This utility model provides an aircraft cargo loading and unloading transfer rack. Upper lifting rings 2 are symmetrically arranged at the top of both ends of a support rod 1, and lower lifting rings 3 are symmetrically arranged at the bottom of both ends. The upper lifting rings 2 and lower lifting rings 3 on the same side are symmetrically arranged and connected by a load-bearing pin passing through the end of the support rod 1. The two symmetrically arranged upper lifting rings 2 are respectively connected to the crane cables of an electric crane symmetrically arranged on the top of the aircraft cargo hold, used to limit the swing of the crane cables on both sides of the direction of movement, so that the crane... The steel cable remains vertical at all times. Two symmetrically arranged lower lifting rings 3 are used to connect to the cargo lifting ropes. In this embodiment, the structure of the support rod 1 and the upper and lower lifting rings 2 and 3 effectively solves the problem of cable tilting during cargo loading and unloading, ensuring the maximum lifting weight of both electric cranes. During cargo lifting, the upper and lower lifting rings 2 and 3 share a single load-bearing pin, preventing the support rod 1 from being subjected to vertical loads, thus reducing the weight of the transfer rack (less than 15 kg). Furthermore, the addition of a level 6 in the middle of the support rod 1 facilitates observation of the overall horizontal angle of the transfer rack during cargo loading and unloading. Further, the transfer rack provided in this embodiment is equipped with quick-release latches (including guide rail latches 4 and tethering ring latches 5) and anti-wear sleeves 7, facilitating rapid transfer with the aircraft, effectively ensuring the safety of cargo loading and unloading operations and meeting the needs of different working scenarios. Attached Figure Description
[0022] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.
[0023] Figure 1 A schematic diagram of the overall structure of an aircraft cargo loading and unloading transfer rack provided for an embodiment of this utility model;
[0024] Figure 2 for Figure 1 The diagram shown illustrates the connection between the aircraft cargo loading and unloading transfer rack and the aircraft crane in the embodiment provided.
[0025] Figure 3 This is a schematic diagram of the guide rail groove of the warehouse floor in an embodiment of the present invention;
[0026] Figure 4 for Figure 1 The schematic diagram shown in the embodiment illustrates the structure of the guide rail lock in the aircraft cargo loading and unloading transfer rack.
[0027] Figure 5 This is a schematic diagram showing the guide rail latch starting to enter the guide rail groove of the cargo hold floor in an embodiment of the present utility model;
[0028] Figure 6 This is a schematic diagram of the guide rail lock and the guide rail groove of the cargo hold floor in the locked state in an embodiment of this utility model;
[0029] Figure 7 for Figure 1 The illustrated embodiment provides a top view of the tethering ring lock in the aircraft cargo loading and unloading transfer rack.
[0030] Figure 8 This is a schematic diagram of the tethering ring on the warehouse floor in an embodiment of the present invention;
[0031] Figure 9 for Figure 7 The illustrated embodiment provides a schematic diagram of the tethering installation of the tethering ring latch and the tethering ring on the cargo hold floor.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1-Support rod; 2-Upper lifting ring; 3-Lower lifting ring; 4-Guide rail lock; 5-Tethering ring lock; 6-Level; 7-Anti-wear sleeve; 8-Pin; 9-Disc nut. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
[0035] As explained in the background section, existing methods of loading cargo in aircraft cargo holds using cranes can lead to problems such as the cargo lifting point not matching the width of the electric crane, or the cargo having only one lifting point, causing the electric crane cable to tilt. This can cause significant difficulties in loading cargo and affect the aircraft's operational efficiency.
[0036] To address the aforementioned issues, this utility model provides an aircraft cargo loading and unloading transfer rack that ensures the aircraft's electric crane cable remains vertical during cargo loading, preventing safety hazards caused by cable tilting. Furthermore, it can be used for loading cargo of any shape, ensuring the safety and efficiency of the loading process.
[0037] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they will not be described again in some embodiments.
[0038] Figure 1 This is a schematic diagram of the overall structure of an aircraft cargo loading and unloading transfer rack provided in an embodiment of the present utility model. Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram of the connection between the aircraft cargo loading / unloading transfer rack and the aircraft crane. This utility model embodiment provides an aircraft cargo loading / unloading transfer rack with functions such as aircraft cargo loading / unloading, limiting the tilt of the electric crane's steel cable, observing the horizontal angle of the transfer rack, quickly connecting to the aircraft floor mooring rings and guide rails, and preventing wear and tear on the aircraft floor.
[0039] See Figure 1 and Figure 2 As shown, the aircraft cargo loading and unloading transfer rack provided in this embodiment of the utility model includes: a support rod 1, an upper lifting ring 2, a lower lifting ring 3, a guide rail lock 4, a tie ring lock 5, a level 6, and an anti-wear sleeve 7.
[0040] like Figure 1 and Figure 2 As shown, the strut 1 is configured as a square beam structure. The top of both ends of the strut 1 are symmetrically provided with upper lifting rings 2, and the bottom of both ends are symmetrically provided with lower lifting rings 3. The upper lifting rings 2 and lower lifting rings 3 on the same side are symmetrically provided, and the upper lifting rings 2 and lower lifting rings 3 are connected by a load-bearing pin that passes through the strut 1.
[0041] In this embodiment of the invention, two symmetrically arranged upper lifting rings 2 are respectively connected to the crane cables of an electric crane symmetrically arranged on the top of the aircraft cargo hold, used to limit the swing of the crane cables on both sides of the direction of movement, so that the crane cables always remain vertical in the vertical direction. Correspondingly, two symmetrically arranged lower lifting rings 3 are used to connect to the lifting ropes of the cargo.
[0042] In one implementation of this utility model embodiment, such as Figure 1 and Figure 2 As shown, the strut 1 has through holes at both ends, and the load-bearing pin passes through the through holes. The relative positions of the load-bearing pin and the through holes are restricted by nuts at both ends. The top through hole of the load-bearing pin is connected to the upper lifting ring 2, and the bottom through hole is connected to the lower lifting ring 3. By using a connection structure that shares a load-bearing pin, the strut 1 is protected from vertical loads.
[0043] In one implementation of this utility model embodiment, such as Figure 1 and Figure 2 As shown, each end of the support rod 1 is equipped with a horizontally penetrating guide rail latch 4. This latch is used to connect the support rod 1 (within the horizontal beam structure) to the guide rail groove on the warehouse floor when the adapter rack is connected. The latch 4 is then connected to the guide rail groove in a direction perpendicular to the warehouse floor after the support rod 1 is rotated 90°. Figure 3 The diagram shown is a structural schematic of the guide rail groove of the warehouse floor in an embodiment of this utility model; as shown... Figure 4 As shown, Figure 1 The illustrated embodiment provides a schematic diagram of the guide rail locking mechanism in an aircraft cargo loading and unloading transfer rack; refer to... Figure 1 and Figure 2 , Figure 1 The upper part of the guide rail latch 4 is shown in the diagram. Figure 2 The diagram shows the guide rail latch 4 embedded in the lower part of the guide rail groove.
[0044] In the specific implementation of this method, such as Figure 3 As shown, two parallel stepped guide rail grooves are provided on the warehouse floor. The top layer of each stepped guide rail groove consists of alternating circular and square grooves, with the diameter of the circular groove being larger than the side length of the square groove. The bottom layer is a rectangular groove that covers the top layer, with the long side being the length of the guide rail groove and the short side being larger than the diameter of the circular groove. Each stepped guide rail groove is connected to a guide rail latch 4 on one side.
[0045] In this implementation, each guide rail latch 4 includes: a connecting base, a screw rod vertically disposed on one end face of the connecting base, a limiting block movably sleeved on the screw rod, and a disc nut 9 screwed onto the screw rod; wherein, the connecting base is configured to cooperate with the circular groove of the top layer of the guide rail groove. By placing the connecting base from the top layer of the groove into the circular groove of the bottom layer, and moving it a preset distance to position the screw rod in the circular groove, the limiting block is placed in the circular groove, thereby restricting the movement of the guide rail latch 4 within the stepped guide rail groove, and locking the support rod 1 by the disc nut 9. Figure 5 The diagram shown is a schematic of the guide rail latch entering the guide rail groove of the cargo hold floor in an embodiment of this utility model; as shown... Figure 6 The diagram shown is a schematic of the guide rail lock and the guide rail groove of the cargo compartment floor in the locked state in an embodiment of this utility model.
[0046] In one implementation of this utility model embodiment, such as Figure 2As shown, a tethering ring lock 5 is fixedly installed in the middle of one side of the support rod 1. This is used to connect the tethering ring of the transfer bracket to the tethering ring of the warehouse floor, allowing the tethering ring of the warehouse floor to be flipped and fitted onto the tethering ring lock 5. The tethering ring and the tethering ring lock 5 are connected by a pin 8 on the tethering ring lock 5. Figure 7 As shown, Figure 1 The illustrated embodiment provides a top view of the tethering ring lock in an aircraft cargo loading and unloading transfer rack. Figure 8 This is a schematic diagram of the tethering ring on the warehouse floor in an embodiment of this utility model. Figure 9 for Figure 7 The illustrated embodiment provides a schematic diagram of the tethering installation of the tethering ring latch and the tethering ring on the cargo hold floor.
[0047] In this implementation, multiple tethering rings can be spaced out along the guide rail groove on the warehouse floor. These rings are used to secure the warehouse floor at different locations by tethering them to the tethering ring locks 5 on the support rod 1.
[0048] In one implementation of this utility model embodiment, such as Figure 1 As shown, a level 6 is fixedly installed in the middle of the other side of the support rod 1, which is used to observe and maintain the horizontal angle of the support rod 1 during the loading and unloading of goods.
[0049] In this implementation, the two ends of the support rod 1 are symmetrically fitted with anti-wear sleeves 7 inside the lifting ring. The anti-wear sleeves 7 are made of rubber and are used to prevent wear between the adapter and the warehouse floor during transport.
[0050] This utility model embodiment provides an aircraft cargo loading and unloading transfer rack. Upper lifting rings 2 are symmetrically arranged at the top of both ends of a support rod 1, and lower lifting rings 3 are symmetrically arranged at the bottom of both ends. The upper lifting rings 2 and lower lifting rings 3 on the same side are symmetrically arranged and connected by a load-bearing pin passing through the end of the support rod 1. The two symmetrically arranged upper lifting rings 2 are respectively connected to the crane cables of an electric crane symmetrically arranged on the top of the aircraft cargo hold, used to limit the swing of the crane cables on both sides of the direction of movement, ensuring that the crane cables remain vertical. The structure remains vertical throughout; two symmetrically arranged lower lifting rings 3 are used to connect with the cargo lifting ropes. In this embodiment, the structure of the support rod 1 and the upper and lower lifting rings 2 and 3 effectively solves the problem of cable tilting of electric cranes during cargo loading and unloading, meets the maximum lifting weight of the two electric cranes, and allows the upper and lower lifting rings 2 and 3 to share a single load-bearing pin during cargo lifting, avoiding vertical loads on the support rod 1, thus making the transfer rack lighter (less than 15 kg). In addition, the level 6 added to the middle of the support rod 1 in this embodiment facilitates observation of the overall horizontal angle of the transfer rack during cargo loading and unloading. Furthermore, the transfer rack provided in this embodiment is equipped with quick-release latches (including guide rail latches 4 and tethering ring latches 5) and anti-wear sleeves 7, which facilitate quick transfer with the aircraft, thereby effectively ensuring the safety of aircraft cargo loading and unloading operations and meeting the usage requirements of different working scenarios.
[0051] The aircraft cargo loading and unloading adapter provided in this embodiment is used as follows:
[0052] 1) When using the aircraft cargo loading and unloading transfer rack provided in this utility model embodiment, the electric crane cable is hung on the upper lifting ring 2 and the cargo is hung on the lower lifting ring 3 when hoisting cargo on the aircraft. The horizontal angle of the hoisting is observed by the level instrument, and the length of the crane cable is adjusted to keep the transfer hoisting level at all times.
[0053] 2) The aircraft cargo loading and unloading transfer rack provided in this embodiment of the utility model is used. 2. When the transfer rack is randomly transferred, the support rod 1 is quickly fixed to the aircraft cargo hold floor by the guide rail lock 4 or the tethering ring lock 5, so as to realize quick and convenient transfer.
[0054] Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.
Claims
1. An aircraft cargo loading and unloading transfer rack, characterized in that, include: Support rod (1), upper lifting ring (2), lower lifting ring (3), guide rail lock (4), tie ring lock (5); The support rod (1) is configured as a square beam structure. The top of both ends of the support rod (1) is symmetrically provided with upper lifting rings (2) and the bottom of both ends is symmetrically provided with lower lifting rings (3). The upper lifting rings (2) and lower lifting rings (3) on the same side are symmetrically provided and are connected by a load-bearing pin that passes through the end of the support rod (1). Two symmetrically arranged upper lifting rings (2) are respectively connected to the crane cables of the electric cranes symmetrically arranged on the top of the aircraft cargo hold, which are used to limit the swing of the crane cables on both sides of the direction of movement, so that the crane cables always remain vertical in the vertical direction; two symmetrically arranged lower lifting rings (3) are used to connect to the lifting ropes of the cargo. The support rod (1) is provided with a guide rail lock (4) at both ends for locking the adapter to the guide rail groove on the cargo hold floor. The support rod (1) is provided with a tethering ring lock (5) at one end in the middle for tethering the adapter to the tethering ring on the cargo hold floor.
2. The aircraft cargo loading and unloading transfer rack according to claim 1, characterized in that, The strut (1) has through holes at both ends, and a load-bearing pin passes through the through holes. The relative positions of the load-bearing pin and the through holes are restricted by nuts at both ends. The top through hole of the load-bearing pin is connected to the upper lifting ring (2), and the bottom through hole is connected to the lower lifting ring (3). By sharing a load-bearing pin, the strut (1) is protected from vertical loads.
3. The aircraft cargo loading and unloading transfer rack according to claim 1, characterized in that, Each end of the support rod (1) is equipped with a guide rail latch (4) that runs horizontally through the end of the support rod (1). When the adapter hanger is connected to the guide rail groove of the warehouse floor, the guide rail latch (4) is connected to the guide rail groove in a direction perpendicular to the warehouse floor after the support rod (1) of the square beam structure is rotated by 90°.
4. The aircraft cargo loading and unloading transfer rack according to claim 3, characterized in that, Two parallel stepped guide rail grooves are provided on the warehouse floor. The top groove of each stepped guide rail groove is an alternating circular groove and a square groove, and the bottom groove is a rectangular groove that covers the top groove. Each stepped guide rail groove is connected to a guide rail latch (4) on one side. Each of the guide rail latches (4) includes: a connecting base, a screw rod vertically disposed on one end face of the connecting base, a limiting block movably sleeved on the screw rod, and a disc nut (9) screwed onto the screw rod; wherein, the connecting base is configured to cooperate with the circular groove of the top layer of the guide rail groove, by placing the connecting base from the top layer of the groove into the circular groove of the bottom layer of the groove, and by moving a preset distance so that the screw rod is located in the circular groove, the limiting block is placed in the circular groove, thereby restricting the movement of the guide rail latch (4) in the stepped guide rail groove, and locking the support rod (1) by the disc nut (9).
5. The aircraft cargo loading and unloading transfer rack according to any one of claims 1 to 4, characterized in that, A tethering ring lock (5) is fixedly installed in the middle of one side of the support rod (1). When the tethering ring of the transfer bracket is connected to the tethering ring of the warehouse floor, the tethering ring of the warehouse floor is flipped and sleeved on the tethering ring lock (5). The tethering ring and the tethering ring lock (5) are connected by the pin (8) on the tethering ring lock (5).
6. The aircraft cargo loading and unloading transfer rack according to any one of claims 1 to 4, characterized in that, Also includes: Level (6); A level (6) is fixedly installed in the middle of the other side of the support rod (1) to maintain the horizontal angle of the support rod (1) by observation during the loading and unloading of goods.
7. The aircraft cargo loading and unloading transfer rack according to any one of claims 1 to 4, characterized in that, Also includes: Anti-wear sleeve (7); The two ends are symmetrically fitted with anti-wear sleeves (7) inside the lifting ring. The anti-wear sleeves (7) are made of rubber and are used to prevent wear between the adapter and the warehouse floor during transport.