A universal aircraft pod and pod rack assembly apparatus

Abstract

The utility model discloses a general aircraft suspension and suspension support assembly equipment belongs to aircraft suspension ground support technical field. The equipment is by main frame, stretching locking mechanism, elevating system and suspension support composition: main frame adopts modularization quick -release structure, and walking trolley, support vertical roof beam, support crossbeam and elevator support frame are assembled into the portal shape load skeleton of two ends wide, middle narrow through the pin shaft or bolt, and stretching locking mechanism sets up at four corners top, and elevating system adopts two groups symmetrical arrangement's hand wheel -worm gear -screw rod drive, and the pulley assembly can be in the guide rail transverse slip and is equipped with height adjusting block, and the adaptation different suspension point spacing and eccentric load, and two groups of elevators can be independent or synchronous operation, and complete suspension lifting, alignment and with the pin shaft butt joint of suspension support. The utility model full system does not need external hoisting equipment and power supply, can be in the field fast unfolding, folding and transfer, satisfies the general hanging of many types of suspension demand.

Description

Technical Field

[0001] This utility model relates to the field of aircraft suspension assembly technology, and in particular to a general-purpose aircraft suspension and suspension bracket assembly equipment. Background Technology

[0002] For aircraft of the same model, different attachment objects are used. There are two main methods for attaching suspended objects: one is to assemble the attachment object with its support frame before connecting it to the aircraft's mounting bracket; the other is to connect the attachment frame to the aircraft's mounting bracket first, and then connect the attachment object to the support frame. Both methods achieve the attachment purpose, but the first method shortens the attachment time, improves accuracy, and ensures the safety of both the attachment object and the aircraft, and is widely used in the industry. Currently, lighter attachment objects and their supports are mainly assembled manually, but when the weight exceeds 100kg, manual assembly poses certain safety hazards. For the assembly of heavy attachment objects and their supports, the industry currently uses overhead cranes or hoists, but in field operations, it is not always possible to find lifting tools to complete the assembly of the attachment objects and supports.

[0003] Extensive research revealed the following deficiencies in existing aircraft suspension and suspension bracket assembly equipment:

[0004] 1. The assembly of aircraft suspensions and suspension brackets is highly dependent on lifting equipment such as overhead cranes and hoists, and the site requirements are strict, which makes it inconvenient to use.

[0005] 2. When assembling two suspended objects with one suspended object support, the center of gravity may shift, and the center of gravity may not be in the middle. When the crane lifts the object, it may be unevenly weighted, causing the suspended object to hit the ground.

[0006] 3. The hoisting equipment cannot be disassembled, making transportation inconvenient;

[0007] 4. Does not meet the requirements for assembling suspended objects and their supports in the field. Utility Model Content

[0008] The purpose of this invention is to provide a universal aircraft suspension and suspension bracket assembly device, thereby solving the aforementioned problems existing in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A general-purpose aircraft suspension and suspension bracket assembly device includes a main frame, a tension locking mechanism, a lifting mechanism, and a suspension bracket;

[0011] The main frame is the main load-bearing structure and the base for the movement of the entire equipment;

[0012] The tension locking mechanism is installed at the top of the main frame and connected to the main frame to stabilize the main frame;

[0013] The lifting mechanism is installed above the main frame and connected to the main frame at both ends to realize the lifting of suspended objects;

[0014] The hanging bracket is the assembled equipment and is located inside the main frame.

[0015] The main frame, tensioning and locking mechanism, and lifting mechanism together constitute a suspension and suspension bracket assembly system that can be quickly disassembled and adapted to field operations.

[0016] In some specific embodiments, the main frame includes: traveling casters, supporting vertical beams, supporting horizontal beams, and a lifting platform support frame;

[0017] The casters are located at the bottom of the main frame.

[0018] There are four supporting vertical beams, which together with two supporting horizontal beams form two sets of support structures;

[0019] There are two elevator support frames, which are connected to two sets of support structures respectively.

[0020] In some specific embodiments, a parking brake structure is provided on the traveling caster.

[0021] In some specific embodiments, the tension locking mechanism is installed at the four corners of the main frame, with one end connected to the elevator support frame and the other end connected to the support beam;

[0022] The tension locking mechanism includes: a right pull rod, a rotating shaft, and a left pull rod;

[0023] The rotating shaft is located in the middle of the tension locking mechanism, and the right and left pull rods are located at both ends of the rotating shaft; the rotating shaft is a double-ended reverse threaded screw structure, with external threads of opposite directions at both ends;

[0024] The right pull rod and the left pull rod are respectively provided with internal threaded holes with opposite directions of rotation at the ends near the rotating shaft, and are respectively threaded to both ends of the rotating shaft;

[0025] The rotating shaft is rotatably positioned between the right and left tie rods. By rotating, the right and left tie rods move closer together, thereby tightening the elevator support frame and the support beam, and achieving a stable lock-in of the main frame.

[0026] In some specific embodiments, the lifting mechanism consists of two sets of mutually symmetrical lifting machines, installed above the main frame;

[0027] Each set of lifts includes a pulley assembly, guide rails, lift itself, handwheel, steering mechanism, and connecting shaft;

[0028] The guide rail is set along the length of the lifting support frame, and the top end is fixed to the lifting support frame with bolts, while the bottom end has a groove for the pulley assembly to be embedded.

[0029] The pulley assembly is set in the groove of the guide rail and can slide left and right along the groove. The end away from the aircraft forms a sliding pair with the guide rail, and the end closer to the aircraft suspends the suspended object downward through the hook. The pulley assembly is connected to the lifting end of the elevator through the lead screw / chain.

[0030] The elevator body is fixed to the center of the top crossbeam of the elevator support frame, and the end away from the aircraft is fastened to the elevator support frame. The worm gear input end of the elevator is connected to the connecting shaft through a coupling.

[0031] The connecting shaft is horizontally arranged on the top of the lifting platform support frame. One end is connected to the output end of the steering gear, and the other end, away from the steering gear, is connected to the worm gear input end of the lifting platform through a coupling, thereby transmitting the handwheel torque to the lifting platform.

[0032] The steering gear is fixed to the top of the elevator support frame near the handwheel. Its input end is connected to the handwheel shaft, and its output end is connected to the connecting shaft to achieve 90° reversal.

[0033] The handwheel is located on the outside of the main frame, and its handwheel shaft is connected to the input end of the steering gear to input the operating torque into the system.

[0034] In some specific embodiments, the pulley assembly includes a hook, a height adjustment block, and a pulley;

[0035] The bottom of the hook is threaded to the suspended object, which forms a mechanical limit during hoisting.

[0036] In some specific embodiments, the pulley assembly has three sets inside the guide rail, which can slide left and right along the guide rail to adapt to different suspension point spacings.

[0037] In some specific embodiments, the two sets of lifting mechanisms can work simultaneously to realize the functions of hanging and retrieving suspended objects respectively.

[0038] In some specific embodiments, the main frame adopts a quick-disassembly structure, and the traveling casters, supporting vertical beams, supporting horizontal beams and the lifting platform support frame are detachably connected, which facilitates transportation and transfer.

[0039] In some specific embodiments, the hanging support is set inside the main frame, and the hanging object and the hanging support are assembled by a lifting mechanism.

[0040] The beneficial effects of this utility model are:

[0041] This invention boasts advantages such as rapid disassembly and assembly, high mobility, and simple and flexible operation, truly achieving universality, serialization, and modularity. The suspended object support assembly equipment features a large lifting stroke, accommodating the movement of suspended objects under the equipment. Each lifting mechanism has three sets of pulleys in its slide rail, allowing for the mounting of various suspended objects at different spacing points. The suspended object support assembly equipment enables rapid disassembly and assembly, facilitating transfer and transportation.

[0042] This invention features two lifting mechanisms, enabling simultaneous hanging and retrieval. The lifting mechanism uses a control screw to move up and down, stabilizing the suspended object. The lifting can be stopped at any time during the process and has a locking function after stopping. Both lifting mechanisms can operate simultaneously, assembling two sets of suspended objects and supports at the same time. It adapts to various hanging scenarios. When assembling two suspended objects onto a single support, one lifting mechanism assembles the support and one suspended object, while the other lifting mechanism removes the other object from the packaging and places it on the ground or a bracket. When assembling the pulley assembly with the suspended object, the pulley hook has a threaded connection at the bottom, providing mechanical restraint during lifting and preventing tilting when the center of gravity is not at its center. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a general-purpose aircraft suspension and suspension bracket assembly device according to the present invention;

[0044] Figure 2 This is a schematic diagram of the main frame assembly structure of the present invention;

[0045] Figure 3 This is a schematic diagram of the lifting mechanism of the present invention;

[0046] Figure 4 This is a schematic diagram of the tension locking mechanism of the present invention;

[0047] Figure 5 This is a schematic diagram of the pulley assembly structure of the present invention;

[0048] Figure 6 This is a schematic diagram showing the relative positions of the pulley assembly and the guide rail.

[0049] In the attached diagram: 1. Main frame; 2. Tension locking mechanism; 3. Lifting mechanism; 4. Suspension bracket;

[0050] 5. Traveling casters; 6. Supporting vertical beam; 7. Supporting horizontal beam; 8. Lifting platform support frame; 9. Pulley assembly; 10. Guide rail; 11. Lifting platform; 12. Handwheel; 13. Steering mechanism; 14. Connecting shaft; 15. Right pull rod; 16. Rotating shaft; 17. Left pull rod; 18. Hook; 19. Height adjustment block; 20. Pulley. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0052] Reference Figures 1 to 6 The general-purpose aircraft suspension and suspension bracket assembly equipment shown includes a main frame 1, a tension locking mechanism 2, a lifting mechanism 3, and a suspension bracket 4.

[0053] Main frame 1 is the main load-bearing and walking base of the entire equipment;

[0054] The tension locking mechanism 2 is installed at the top of the main frame 1 and connected to the main frame to stabilize the main frame 1;

[0055] The lifting mechanism 3 is installed above the main frame and connected to the main frame at both ends to realize the lifting of suspended objects;

[0056] The hanging bracket 4 is the equipment to be assembled and is located inside the main frame.

[0057] The main frame, tensioning and locking mechanism, and lifting mechanism together constitute a suspension and suspension bracket assembly system that can be quickly disassembled and adapted to field operations.

[0058] Reference Figures 1 to 6 As shown, this utility model provides a universal aircraft suspension and suspension bracket assembly equipment. Its main structure consists of four parts: main frame, tension locking mechanism, lifting mechanism and suspension bracket. The four parts are connected in sequence and together form a complete system that can quickly complete the disassembly, assembly, lifting and docking of suspension and suspension bracket under field conditions without lifting.

[0059] The main frame serves as the primary load-bearing and moving base for the entire equipment. It adopts a gantry frame design, wider at both ends and narrower in the middle, and is assembled from casters, support vertical beams, support horizontal beams, and lifting platform support frames via quick-release pins or bolts. The casters are equipped with parking brakes, allowing for immediate locking after shutdown. Four support vertical beams and two support horizontal beams form two sets of symmetrical supports. Two lifting platform support frames are fixed to the top of each set of supports, creating sufficient height and internal space for easy access of suspended objects and their supports.

[0060] The tension locking mechanism is installed at the top of the four corners of the main frame to tighten the lifting platform support frame and the support beam, thereby eliminating assembly gaps and preventing frame swaying during operation. This mechanism consists of a right tie rod, a left tie rod, and a centrally located rotating shaft. The rotating shaft is a double-ended reverse-threaded screw with opposite thread directions at both ends. The corresponding ends of the right and left tie rods are machined with internally threaded holes in opposite directions. When the rotating shaft is rotated with a tool, the right and left tie rods simultaneously move inward, generating axial tension, making the lifting platform support frame and the support beam a rigid unit, thus achieving a stable lock-in of the main frame.

[0061] The lifting mechanism consists of two symmetrical sets of lifts, arranged on the left and right sides above the main frame, respectively, and can operate independently or synchronously. Each set of lifts includes a guide rail, a pulley assembly, the lift body, a handwheel, a steering mechanism, and a connecting shaft. The guide rail is set along the length of the lift support frame, with its top end bolted to the inner facade of the lift support frame and its bottom end having a groove. The pulley assembly is placed in this groove and can slide left and right to adjust the spacing between the suspension points. The end furthest from the aircraft forms a sliding pair with the guide rail, while the end closest to the aircraft suspends the suspended object downwards via a hook. The bottom of the hook is threaded to the suspended object and is equipped with a mechanical limit to prevent the suspended object from tilting when the center of gravity is off-center. The main body of the elevator is fixed in the center of the top crossbeam of the elevator support frame. Its lifting end is connected to the pulley assembly through a screw or chain. The handwheel is located in the operating position on the outside of the main frame. The handwheel shaft is connected to the input end of the steering gear. The output end of the steering gear is connected to the input end of the elevator worm gear through a horizontally arranged connecting shaft, so as to realize a 90° reversal and transmit the handwheel torque to the elevator, thereby driving the pulley assembly to lift and lower, and complete the stable lifting, positioning and assembly of the suspended object with the suspended object support.

[0062] The hanging bracket, as the object to be assembled, is placed inside the main frame and can be connected to the pin of the hanging object with the assistance of a ground bracket or another set of lifts. When "double hanging objects + single bracket" assembly is required, the two sets of lifts can move in sequence. One set completes the connection between the bracket and the first hanging object, while the other set takes the second hanging object out of the packaging box and lowers it to the bracket, thus achieving continuous operation.

[0063] All components of the complete set of equipment are detachable, and the weight of a single piece after disassembly does not exceed fifty kilograms, which can be transported by general vehicles. When unfolded, no external power is required, and the lifting can be completed by handwheel drive alone, which meets the needs of rapid disassembly and assembly, transportation and general hanging of various types of suspended objects in the field.

[0064] In some specific embodiments, the main frame 1 includes: walking casters 5, supporting vertical beams 6, supporting horizontal beams 7, and lifting platform support frame 8;

[0065] The travel casters 5 are located at the bottom of the main frame 1;

[0066] There are four supporting vertical beams 6, which together with two supporting horizontal beams 7 form two sets of support structures;

[0067] There are two elevator support frames, which are connected to two sets of support structures respectively.

[0068] In some specific embodiments, the main frame adopts a modular assembly approach, consisting of four main components: casters, support vertical beams, support horizontal beams, and a lifting platform support frame, which are sequentially assembled into a gantry-shaped load-bearing skeleton that is wider at both ends and narrower in the middle. The casters are swivel casters with brakes, fixed to the bottom of the four corner support vertical beams with wheel frame bolts, allowing the entire machine to be manually pushed on a helipad or outdoor ground. Once in position, the brakes are applied to lock it in place. The support vertical beams are rectangular tubes of aluminum alloy or carbon fiber of the same length. Each column has a horizontal pin hole at its lower end, which aligns with the lugs of the caster frame, forming a hinge. This facilitates folding and transportation and allows for slight adaptation to uneven ground. The four support vertical beams are divided into two groups: each group has two beams spaced a certain width apart on their inner sides, with flange plates at the top for clamping and bolting a horizontally placed support horizontal beam, thus forming two inverted "U"-shaped gantry frames. Several positioning holes are equidistantly spaced along the length of the top surface of the two support horizontal beams for quick switching between different spans. The lifting platform support frame uses "π"-shaped welded components. The uprights are bolted to the flange plates of the corresponding gantry with the same holes, while the crossbeams extend inwards to form a top load-bearing platform. Two rows of elongated holes are vertically drilled in the web of the crossbeam for adjusting the guide rail installation height later. To enhance overall torsional rigidity, detachable diagonal braces are added between the two lifting platform support frame uprights. The braces have threaded forks at both ends; rotating the forks tightens or loosens them for quick assembly and disassembly. All bolt connections are equipped with quick-release pins or wing nuts, allowing for deployment or retraction within fifteen minutes without tools, meeting the needs of rapid field deployment. After assembly, a sufficiently high rectangular channel is formed inside the main frame, allowing suspended supports to be pushed directly in along ground tracks or trailers. After alignment, the lifting mechanism completes the hoisting, avoiding the dependence on site conditions inherent in traditional overhead cranes.

[0069] In some specific embodiments, the traveling caster 5 is equipped with a parking brake structure.

[0070] In some specific embodiments, the tension locking mechanism 2 is installed at the four corners of the main frame 1, with one end connected to the elevator support frame 8 and the other end connected to the support beam 7;

[0071] The tension locking mechanism 2 includes: a right pull rod 15, a rotating shaft 16, and a left pull rod 17;

[0072] The rotating shaft 16 is located in the middle of the tension locking mechanism 2, and the right pull rod 15 and the left pull rod 17 are located at both ends of the rotating shaft 16; the rotating shaft 16 is a double-headed reverse threaded screw structure, and its two ends are respectively provided with external threads with opposite directions of rotation;

[0073] The right pull rod 15 and the left pull rod 17 are respectively provided with internal threaded holes with opposite directions of rotation at one end near the rotating shaft 16, and are respectively threaded to both ends of the rotating shaft 16;

[0074] The rotating shaft 16 is rotatably disposed between the right tie rod 15 and the left tie rod 17. By rotating, the right tie rod 15 and the left tie rod 17 move closer to each other, thereby tightening the elevator support frame 8 and the support beam 7, and achieving a stable lock-in of the main frame 1.

[0075] In some specific embodiments, the traveling casters adopt a swivel wheel structure with a built-in parking brake: a pedal-type brake pad is hinged to the side wall of the wheel frame. When the operator steps on the pedal, the brake pad simultaneously grips the wheel surface and the wheel axle, forming a double frictional resistance to ensure that the whole machine remains stationary on slopes or in windy conditions; lifting the pedal releases the brake instantly, taking into account both rapid movement and instant positioning requirements.

[0076] The tensioning and locking mechanism is located at the top of the four corners of the main frame. It is used to tighten the elevator support frame and the support beam along the diagonal direction, eliminating assembly gaps and improving overall rigidity. The mechanism consists of three connected sections: a right tie rod, a rotating shaft, and a left tie rod. Both the left and right tie rods are hollow tubes made of high-strength alloy steel. One end is welded with a fork head with a pin hole, which is hinged to the outer ear plate of the elevator support frame and the end ear plate of the support beam through pins, respectively. The other end is machined with internally threaded holes with opposite directions to accommodate the rotating shaft.

[0077] The rotating shaft, located between the two tie rods, is a double-ended reverse-threaded screw. The middle section is milled into a hexagonal or knurled cylinder for easy rotation using a wrench or hand socket. The external threads at both ends have opposite directions of rotation but the same pitch, and their outer diameter is slightly smaller than the root diameter of the internal thread on the tie rod, ensuring smooth engagement even in dusty outdoor environments. To prevent loosening, a radial set screw hole is opened on each end face of the rotating shaft. After tightening, thread-locking adhesive can be injected to achieve long-term anti-loosening protection.

[0078] During operation, a single rotation of the rotating shaft causes the right and left pull rods to retract inward simultaneously, generating pure tension. This pulls the lifting platform support frame and support beam closer together, and the four corners of the main frame are simultaneously "tightened," instantly transforming the entire structure from an assembled state to a rigid whole. Reverse rotation quickly releases the tension, facilitating disassembly and transport. To improve operational efficiency, a small ratchet wrench storage box can be added at the exposed hexagonal section of the rotating shaft for easy access during operation, further shortening deployment and retraction time. This tension-locking system requires no additional lock nuts or cotter pins, has fewer parts, and is lightweight, meeting the requirements for rapid assembly and disassembly in the field and high reliability.

[0079] In some specific embodiments, the lifting mechanism 3 consists of two sets of mutually symmetrical lifting machines, installed above the main frame 1;

[0080] Each set of elevators includes a pulley assembly 9, a guide rail 10, an elevator 11, a handwheel 12, a steering mechanism 13, and a connecting shaft 14;

[0081] The guide rail 10 is set along the length of the elevator support frame 8, and the top end is fixed to the elevator support frame 8 with bolts. The bottom end has a groove for the pulley assembly 9 to be embedded.

[0082] The pulley assembly 9 is set in the groove of the guide rail 10 and can slide left and right along the groove. The end away from the aircraft forms a sliding pair with the guide rail 10, and the end near the aircraft is suspended downward by the hook 18. The pulley assembly 9 is connected to the lifting end of the elevator 11 through the lead screw / chain.

[0083] The elevator 11 is fixed to the center of the top crossbeam of the elevator support frame 8, and the end away from the aircraft is fastened to the elevator support frame 8. The worm gear input end of the elevator 11 is connected to the connecting shaft 14 through a coupling.

[0084] The connecting shaft 14 is horizontally arranged on the top of the lifting platform support frame 8. One end is connected to the output end of the steering gear 13, and the other end, away from the steering gear, is connected to the worm gear input end of the lifting platform 11 through a coupling, thereby transmitting the handwheel torque to the lifting platform 11.

[0085] Steering device 13 is fixed to the top of the elevator support frame 8 near the handwheel side. Its input end is connected to the handwheel 12 shaft, and its output end is connected to the connecting shaft 14 to achieve 90° reversal.

[0086] The handwheel 12 is located on the outside of the main frame 1 in the operating position. Its handwheel shaft is connected to the input end of the steering gear 13 to input the operating torque into the system.

[0087] In some specific embodiments, the lifting mechanism adopts a symmetrical dual-lift layout, with both lifts sharing the same handwheel drive chain. They can operate independently or synchronously to meet the needs of precise hoisting of a single suspended object or continuous operation with "double springs + single support". Each lift consists of six parts connected sequentially: pulley assembly, guide rail, lift body, handwheel, steering gear, and connecting shaft, forming a closed force flow. All components are arranged around the lift support frame, resulting in a compact structure and low center of gravity, which is beneficial for stability on rugged terrain.

[0088] The guide rails are made of high-strength extruded aluminum alloy profiles and run the entire length of the lifting platform support frame. They are fixed to the support frame web plate on the back by two rows of bolts spaced 100mm apart. A reference plane is machined into the mounting surface in one operation to ensure that the parallelism of the two guide rails is no greater than 0.1mm, thus ensuring smooth lateral movement and unimpeded lifting of the pulley assembly. T-shaped grooves are cut into the web of the guide rails, with the groove openings tapering inwards to accommodate dustproof strips and prevent sand particles from entering and causing pulley wear. Oil injection holes are located at 200mm intervals at the bottom of the grooves, allowing for direct injection of grease using a portable grease gun during field maintenance, extending service life.

[0089] The pulley assembly consists of three parts: a pulley, a height adjustment block, and a hook. The pulley uses a double-row deep groove ball bearing with a polyurethane damping ring, which reduces noise and prevents damage to the aluminum guide rail surface. The height adjustment block is located between the pulley and the hook and has an M24 fine-pitch external thread. Rotating the adjustment block allows for quick adjustment of the hook's dangling length under no-load conditions, compensating for height differences in the suspension points of different suspended objects. The adjustment range is 0-80mm. After adjustment, it is locked with a back nut to prevent loosening. The hook is made of alloy steel forging blank, with an external thread machined at the root to mate with the adjustment block. A replaceable copper alloy gasket is inserted inside the hook opening to prevent sparks from hard contact with the suspension ring. A spring pressure plate is installed at the hook tip to form a mechanical limit, preventing the suspended object from slipping even when the center of gravity is off.

[0090] The lifting platform body is fixed to the center of the top crossbeam of the lifting platform support frame. The bottom flange of the housing is attached to the upper surface of the crossbeam and secured with 12.9 grade high-strength bolts. The bolt heads are inserted into the pre-set countersunk holes in the crossbeam to avoid protruding and obstructing personnel passage. The lifting platform internally uses a worm gear pair + trapezoidal lead screw and nut drive, which has a self-locking function, allowing the load to be suspended for a long time when the power is off or the handwheel is stopped. The lower end of the lead screw is connected to the pulley assembly through a ball joint, which can automatically compensate for slight misalignment between the guide rail and the lead screw axis, preventing additional bending moment from being transmitted to the worm gear pair. The worm input end is a cylindrical shaft extension, connected to the connecting shaft through a flexible coupling. The outer diameter of the coupling is only 40mm, allowing a radial deviation of ±1mm, which simplifies alignment and also serves as a vibration buffer.

[0091] The connecting shaft is horizontally positioned at the top of the lift support frame. It consists of two hollow aluminum tubes joined together by a quick-release rigid coupling. Foam sealant is filled into the tube walls to reduce weight and suppress rotational vibration. A key is installed at each end of the shaft; one end connects to the output end of the steering gear, and the other end connects to a perforated coupling at the worm gear end of the lift, enabling long-distance torque transmission after a 90° reversal. The steering gear is a spiral bevel gear pair with vertically arranged input and output shafts. The gear material is 20CrMnTi, with a carburized and quenched surface, providing a continuous, lubrication-free service life of over 5000 lifting cycles in the field. The bottom surface of the steering gear housing is flush with the pre-installed mounting platform on the top beam of the lift support frame and secured with four bolts. An observation window is located on the side of the housing to check the gear lubrication status at any time.

[0092] The handwheel is located on the outer side of the main frame, close to the operator's waist, and welded to a foldable support. A spring pin is installed at the support hinge; it is lowered during transport to reduce packaging height and raised and locked with the spring pin during operation. The handwheel axle is directly connected to the steering gear input via a flat key. The handwheel rim is covered with soft rubber, allowing for gripping even while wearing gloves in winter. A one-way arrow and the words "Raise / Lower" are cast on the side of the rim to prevent accidental operation. To reduce labor intensity, a detachable rocker arm sleeve can be added to the handwheel axle to extend the lever arm, allowing for single-handed operation of a 2-ton rated load for lifting and lowering without impact or jamming.

[0093] With the above arrangement, the operator can stand on the ground and turn the handwheel to synchronously drive the two lifting platforms through the steering gear and connecting shaft. The pulley assembly rises and falls smoothly along the guide rail, and the lateral position can be adjusted at will to meet the needs of different lifting point spacing and center of gravity offset compensation. The entire lifting chain does not require external power and relies entirely on mechanical self-locking to maintain its position, meeting the safety operation requirements in the field without power supply.

[0094] In some specific embodiments, the pulley assembly 9 includes a hook 18, a height adjustment block 19, and a pulley 20;

[0095] The bottom of hook 18 is threaded to the suspended object, forming a mechanical limit during hoisting.

[0096] In some specific embodiments, the pulley assembly 9 is provided in three sets within the guide rail 10, and can slide left and right along the guide rail 10 to adapt to different suspension point spacings.

[0097] In some specific embodiments, the two sets of lifting mechanisms 3 can work simultaneously to realize the functions of hanging and retrieving suspended objects respectively.

[0098] In some specific embodiments, the main frame 1 adopts a quick-disassembly structure, and the walking casters 5, the supporting vertical beams 6, the supporting horizontal beams 7 and the lifting support frame 8 are detachably connected, which facilitates transportation and transfer.

[0099] In some specific embodiments, the hanging support 4 is disposed in the internal space of the main frame 1, and the hanging object and the hanging support 4 are assembled by the lifting mechanism 3.

[0100] In some specific embodiments, the pulley assembly adopts a three-layer series structure of "hook - height adjustment block - pulley," forming a universal lifting point unit that can slide laterally and finely adjust the vertical dimensions. The pulley uses a double-row sealed ball bearing with a polyurethane damping ring, and its outer diameter slides into the T-slot of the guide rail, reducing sliding resistance and preventing damage to the aluminum guide rail. The height adjustment block is located below the pulley, and its body is made of cylindrical alloy steel. The upper end is machined with external threads to connect with the internal thread hole of the pulley spindle, and the lower end is also machined with external threads to connect with the hook. The middle section is milled with a hexagonal wrench position. Rotating the adjustment block allows for quick adjustment of the hook's descent length when there is no load, compensating for the height difference of different suspended objects. The adjustment range is 0-80mm. After adjustment, it is locked by a back nut to prevent loosening during operation. The hook is forged from alloy steel, and the inside of the hook opening is inlaid with a replaceable copper alloy gasket to avoid sparks from hard contact with the hanging object and the lifting ring. A spring return pressure plate is set at the hook tip to form a mechanical limit, which can prevent the hanging object from slipping even when the center of gravity is off-center, achieving double insurance of "threaded connection + mechanical locking".

[0101] To accommodate different lateral lifting point spacings for various types of suspended objects, three sets of pulley assemblies are arranged side-by-side within each guide rail. These three sets can slide independently left and right; once in position, a spring-loaded locating pin is inserted to lock their relative positions. When the span of the lifting points changes, simply pull out the locating pin, push the pulley assembly to the new position, and reinsert the pin. A single person can complete the adjustment within 30 seconds without disassembling any parts. The rated load of the three sets of pulley assemblies is designed with a safety factor of 1:1.25, and the total load-bearing capacity meets the simultaneous lifting requirements of two heavy suspended objects. Furthermore, the middle set can serve as a balancing lifting point, effectively dispersing eccentric bending moments and preventing localized overload deformation of the guide rail.

[0102] The two lifting mechanisms can operate independently or synchronously: When performing a "double-spring + single-support" task, the left lifting platform first aligns the first suspended object with the support and locks it in place, while the right lifting platform then removes the second suspended object from the packaging box and lowers it to the ground bracket, enabling continuous operation. When only a single suspended object is needed, either side can be shut down while the other side continues to lift normally, saving manpower. The two lifting platforms maintain mechanical synchronization through the same segmented connecting shaft. If a sudden change in load occurs on one side, the elastic body inside the coupling can instantly absorb the impact, preventing gear grinding or screw jamming and ensuring smooth operation.

[0103] The main frame adopts a fully modular quick-release structure: the casters and the lower end of the support beams are hinged with quick-release pins; simply pull out the pins to fold the casters to the side of the beams. The support beams and crossbeams are connected using flange plates and high-strength bolts, with the bolt heads recessed into countersunk holes to prevent protrusion and scratches. The lift support frame and the top of the crossbeams use mortise and tenon joints and two rows of bolts for locking, ensuring assembly accuracy while also allowing for fast disassembly. All connection points are equipped with anti-loosening steel wire or nylon self-locking nuts to prevent loosening due to vibrations during field transport. After disassembly, the longest component does not exceed 2 meters, and the weight of a single piece is controlled within 50 kg. Two people can easily load it into a universal transport container for rapid transport by helicopter or truck.

[0104] The suspended object support, as the object to be assembled, is normally stored on a ground bracket. During operation, it is pushed into the predetermined position by a manual or electric pallet along the narrow passage in the middle of the main frame. The top of the support has a pre-drilled pin hole for docking with the suspended object. After the lifting mechanism lowers the suspended object to the center of the pin hole, the assembly can be completed simply by inserting the quick-release pin and installing the cotter pin. The entire process does not require the assistance of an overhead crane. Two operators can complete the docking, locking, and functional check of a single set of suspended objects with the support within 15 minutes, which significantly improves the efficiency of field installation.

[0105] The working method of this utility model revolves around a five-step cycle: "no power required, rapid deployment, stable lifting, accurate docking, and easy retraction." The entire process requires no external power supply or lifting equipment and can be completed by two operators. The specific steps are as follows:

[0106] On-site unfolding

[0107] ① Insert the quick-release pin of the travel caster into the hinge hole at the bottom of the support beam, lower the caster and step on the parking pedal;

[0108] ②Use flange bolts to lock the two supporting crossbeams to the top of the four supporting vertical beams, forming two inverted "U" shaped portal frames at the front and back;

[0109] ③ Insert the lower tenon of the elevator support frame into the positioning groove at the top of the gantry, insert the high-strength bolts and pre-tighten them;

[0110] ④ Install the diagonal braces and rotate the fork heads to the tensioned state; the main frame will immediately form a rigid whole.

[0111] Frame deadlock

[0112] Using a ratchet wrench, simultaneously tighten the rotating shaft of the four-corner tension locking mechanism. The double-headed reverse thread screw drives the right and left pull rods to retract inwards at the same time, tightening the elevator support frame and support beam, eliminating the assembly gap, and putting the whole machine into the load-bearing state.

[0113] Pre-adjustment of suspension points

[0114] ① Push the three sets of pulleys inside the guide rail laterally so that their spacing matches the size of the suspension point of the object, and then insert the spring positioning pin to lock them in place;

[0115] ② Rotate the height adjustment block to fine-tune the hook sag, ensuring that the coplanar error of the three hanging points is ≤2mm. After adjustment, tighten with the back nut.

[0116] Hanging items

[0117] ① Push the suspended object under the frame, screw the hook into the lifting eye thread, and the hook pressure plate will automatically reset to form a mechanical limit;

[0118] ② Operate the handwheels on both sides simultaneously or separately. The steering gear reverses the horizontal torque by 90° and transmits it to the worm gear pair through the connecting shaft. The screw nut drives the pulley assembly to rise smoothly.

[0119] ③ When the screw scale is close to the height of the bracket lug, slow down. Ground personnel push the suspended bracket along the slide into the center position, continue to turn the handwheel slightly to complete the pin hole alignment, insert the quick release pin and install the cotter pin, and the docking is completed.

[0120] Double-shot continuous mounting optional

[0121] The left elevator keeps the first suspended object hovering, while the right elevator descends to retrieve the second suspended object. Step 4 is repeated to achieve continuous operation of "double spring + single support".

[0122] withdrawal and transfer

[0123] Rotate the handwheel in the opposite direction to lower the unloaded hook, pull out the positioning pin, loosen the diagonal brace, loosen the four corner rotating shafts, remove all quick-release parts in reverse order, and load the components into the transport box. The whole process takes ≤15 minutes, meeting the needs of rapid field relocation.

[0124] Example

[0125] The process involves four people moving the disassembled components to the helipad, inserting quick-release pins for the casters, tightening the flange bolts of the vertical and horizontal beams, positioning and locking the elevator support frame with tenons and mortises, and tensioning the diagonal braces. The main frame takes about 10 minutes to form.

[0126] Locking: Use a ratchet wrench to rotate the four corner shafts simultaneously, causing the right and left levers to retract inwards and rigidify the frame; after completion, insert the anti-loosening set screw.

[0127] Pre-adjustment: According to the hanging point diagram, adjust the three sets of pulley assemblies in the horizontal sliding guide rail to the corresponding dimensions → insert the spring positioning pin; rotate the height adjustment block so that the height difference between the lower end of the hook and the ground is ≤2mm, and lock the back nut.

[0128] Lifting: Push the suspended object under the frame, screw the hook into the lifting ring thread → the pressure plate automatically resets to form a mechanical limit; operate the handwheel, the suspended object rises smoothly, the lead screw has a scale, the operator visually slows down when the scale approaches the bracket pin hole.

[0129] Alignment: Ground personnel push the suspended support along the slide into the center of the frame; continue to turn the handwheel slightly to make the pin hole of the suspended object align with the lug of the support → insert the quick-release pin and install the cotter pin to complete the docking.

[0130] Double-load operation: The left elevator keeps the first suspended object hovering, while the right elevator descends into the packaging box to remove the second suspended object → descends to the ground bracket → repeats the alignment steps to achieve continuous loading.

[0131] Removal: Rotate the handwheel in the reverse direction to lower the unloaded hook → pull out the positioning pin → loosen the diagonal brace → loosen the four corner rotating shafts → remove all quick-release pins and bolts in reverse order, and load the components into the transport box. The total time is ≤15 minutes.

[0132] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0133] Eliminate dependence on overhead cranes / cranes: Purely mechanical handwheel drive, capable of lifting and docking heavy suspended objects even in the absence of power supply in the field.

[0134] Self-adaptive center of gravity: The three sets of pulley assemblies are laterally adjustable, and together with the height adjustment block, they automatically compensate for the height difference of the suspension points and the eccentric bending moment to avoid collisions with the suspended objects.

[0135] Quick disassembly and relocation: All connection points use quick-release pins, wing nuts or flange bolts, allowing a single person to complete the unfolding or folding within 15 minutes. Each disassembled piece weighs less than 50kg and can be transported by general-purpose vehicles.

[0136] Dual-machine parallel operation: Two sets of elevators can operate synchronously or independently to achieve continuous hanging of "double springs + single support", which doubles the work efficiency.

[0137] Self-locking safety: The worm gear pair has a reverse self-locking function, which can stop at any time during the lifting process and keep the load from sinking, without the need for an additional safety pin.

[0138] Universal compatibility: The same set of equipment covers a variety of hanging point spacings and weight levels for various suspended objects, reducing the number of special tooling and lowering maintenance costs.

[0139] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A universal aircraft suspension and suspension bracket assembly device, characterized in that: It includes a main frame (1), a tension locking mechanism (2), a lifting mechanism (3), and a hanging bracket (4); The main frame (1) is the main load-bearing and walking base of the entire equipment; The tension locking mechanism (2) is installed at the top of the main frame (1) and connected to the main frame to stabilize the main frame (1). The lifting mechanism (3) is installed above the main frame and connected to the main frame at both ends, and is used to lift the suspended object. The suspension bracket (4) is the assembled equipment and is located inside the main frame. The main frame, tension locking mechanism, and lifting mechanism together constitute a suspension and suspension bracket assembly system that can be quickly disassembled and adapted to field operations.

2. The device according to claim 1, characterized in that, The main frame (1) includes: walking casters (5), supporting vertical beams (6), supporting horizontal beams (7) and lifting support frame (8); The traveling casters (5) are located at the bottom of the main frame (1); There are four supporting vertical beams (6), which together with two supporting horizontal beams (7) form two sets of support structures; There are two elevator support frames (8), which are connected to two sets of support structures respectively.

3. The device according to claim 2, characterized in that, The caster wheel (5) is equipped with a parking brake structure.

4. The device according to claim 1, characterized in that, The tension locking mechanism (2) is installed at the four corners of the main frame (1), with one end connected to the elevator support frame (8) and the other end connected to the support beam (7). The tension locking mechanism (2) includes: a right pull rod (15), a rotating shaft (16), and a left pull rod (17). The rotating shaft (16) is located in the middle of the tension locking mechanism (2), and the right pull rod (15) and the left pull rod (17) are located at both ends of the rotating shaft (16); the rotating shaft (16) is a double-headed reverse thread screw structure, and its two ends are respectively provided with external threads with opposite directions of rotation; The right pull rod (15) and the left pull rod (17) are respectively provided with internal threaded holes with opposite directions of rotation at one end near the rotating shaft (16), and are respectively threaded to both ends of the rotating shaft (16); The rotating shaft (16) is rotatably set between the right tie rod (15) and the left tie rod (17). By rotating, the right tie rod (15) and the left tie rod (17) move closer to each other, thereby tightening the elevator support frame (8) and the support beam (7) to achieve a stable lock of the main frame (1).

5. The device according to claim 1, characterized in that, The lifting mechanism (3) consists of two sets of mutually symmetrical lifting machines, which are installed above the main frame (1); Each set of elevators includes a pulley assembly (9), a guide rail (10), an elevator (11), a handwheel (12), a steering mechanism (13), and a connecting shaft (14). The guide rail (10) is set along the length of the elevator support frame (8), and the top end is fixed to the elevator support frame (8) with bolts. The bottom end has a groove for the pulley assembly (9) to be inserted. The pulley assembly (9) is set in the groove of the guide rail (10) and can slide left and right along the groove. The end away from the aircraft forms a sliding pair with the guide rail (10), and the end near the aircraft is suspended downward by the hook (18). The pulley assembly (9) is connected to the lifting end of the elevator (11) through the screw / chain. The elevator (11) is fixed to the center of the top beam of the elevator support frame (8), and the end away from the aircraft end is fastened to the elevator support frame (8). The worm input end of the elevator (11) is connected to the connecting shaft (14) through a coupling. The connecting shaft (14) is horizontally arranged on the top of the elevator support frame (8). One end is connected to the output end of the steering gear (13), and the other end away from the steering gear is connected to the worm gear input end of the elevator (11) through a coupling, thereby transmitting the handwheel torque to the elevator (11). Steering gear (13) is fixed to the top of the elevator support frame (8) near the handwheel side. Its input end is connected to the handwheel (12) shaft, and its output end is connected to the connecting shaft (14) to achieve 90° reversal. The handwheel (12) is located on the outside of the main frame (1) in the operating position. Its handwheel shaft is connected to the input end of the steering gear (13) to input the operating torque into the system.

6. The device according to claim 5, characterized in that, The pulley assembly (9) includes a hook (18), a height adjustment block (19), and a pulley (20). The bottom of the hook (18) is threaded to the suspended object, forming a mechanical limit during hoisting.

7. The device according to claim 6, characterized in that, The pulley assembly (9) has three sets inside the guide rail (10) and can slide left and right along the guide rail (10) to adapt to different suspension point spacings.

8. The device according to claim 1, characterized in that, The two sets of lifting mechanisms (3) can work simultaneously to realize the functions of hanging and taking down suspended objects respectively.

9. The device according to claim 1, characterized in that, The main frame (1) adopts a quick-disassembly structure. The walking casters (5), support vertical beams (6), support horizontal beams (7) and the lifting support frame (8) are detachably connected, which facilitates transportation and transfer.

10. The device according to claim 1, characterized in that, The hanging support (4) is located inside the main frame (1), and the hanging object and the hanging support (4) are assembled by the lifting mechanism (3).

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