An aw189 helicopter rotor sling

Abstract

The utility model relates to a lifting appliance technical field, especially for AW189 helicopter rotor lifting appliance, including lifting appliance mechanism and be used for the dismounting operation of rotor, lifting appliance mechanism includes: main part subassembly, including the upper clamp seat of lower clamp seat upper portion arrangement, and lower clamp seat rear end with upper clamp seat rear end articulates, and the left and right sides of upper clamp seat front end bottom all are fixed with lock head, the lock catch subassembly includes the frame seat of fixed in lower clamp seat front end inside, and the pull rod of slide installation is penetrated in frame seat lower extreme, and the upper end of pull rod is fixed with the guide plate, and the left and right sides of guide plate inside are opened with each other symmetrical inclined slot, and the left and right sides of frame seat all are penetrated with the lock rod of slide installation, and the lock rod inner end with inclined slot slide installation, realize the quick locking of rotor through the lock catch subassembly, and spring reset mechanism ensures the clamping firm, when unlocking, the damper device controls the stable reset of upper clamp seat, avoids the impact. Simplified operation process, need not external power, safe and reliable, especially suitable for hangar environment under the rotor dismounting operation.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically an AW189 helicopter rotor lifting equipment. Background Technology

[0002] The AW189 helicopter, an advanced medium-sized twin-engine helicopter, is widely used in offshore transport, search and rescue, and business aviation. This model employs a five-blade main rotor system, requiring specialized equipment for rotor disassembly and reassembly during regular maintenance and overhauls.

[0003] According to CN221027211U, a helicopter rotor lifting tool is disclosed. This technology discloses a technical solution including "a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are hinged on one side and a locking mechanism is provided on the other side. The first clamping plate is provided with a lifting ring. The locking mechanism includes an L-shaped plate, a limiting plate, and a second hook provided at the free end of the second clamping plate. The L-shaped plate includes a first connecting plate and a second connecting plate. The end of the first connecting plate is hinged to the free end of the first clamping plate, and the end of the first connecting plate is provided with a first hook for engaging with the second hook. A connecting seat is provided on the outer side of the first clamping plate. The limiting plate is hinged to the connecting seat. A spring is provided between the limiting plate and the first clamping plate. A limiting plate is hinged to the end of the second connecting plate. The limiting plate is bolted to the first end of the limiting plate, and the second end of the limiting plate is used to abut against the L-shaped plate." This solution has the technical advantages of "being able to quickly load and unload helicopter rotors, with a simple structure and convenient operation."

[0004] In existing AW189 helicopter rotor assembly and disassembly operations, traditional methods suffer from a lack of specialized lifting equipment. Because this model uses a five-blade main rotor system, the rotor is large and requires extremely high installation precision. During routine maintenance and overhauls, maintenance personnel can only use general-purpose lifting equipment in conjunction with temporary fixing devices. This non-specialized equipment cannot accurately match the special structure of the rotor, resulting in frequent inaccurate positioning and unstable fixing during the assembly and disassembly process. This not only prolongs the operation time but also increases the risk of damage to rotor components and safety hazards for personnel. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an AW189 helicopter rotor spreader. It achieves rapid rotor locking through a locking assembly, and a spring return mechanism ensures secure clamping. During unlocking, a damping device controls the upper clamp to smoothly return to its original position, preventing impact. This simplifies the operation process, requires no external power, is safe and reliable, and is particularly suitable for rotor assembly and disassembly operations in hangar environments.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an AW189 helicopter rotor sling, comprising a sling mechanism and used for rotor assembly and disassembly operations, the sling mechanism comprising:

[0007] The main component includes an upper clamping seat located above the lower clamping seat, with the rear end of the lower clamping seat hinged to the rear end of the upper clamping seat, and lock heads fixed on both the left and right sides of the bottom front end of the upper clamping seat.

[0008] The locking assembly includes a frame fixed inside the front end of the lower clamp, a pull rod slidably mounted through the lower end of the frame, a guide plate fixed to the upper end of the pull rod, symmetrical inclined grooves on the left and right sides inside the guide plate, locking rods slidably mounted through the left and right sides of the frame, and the inner ends of the locking rods slidably mounted with the inclined grooves, and a standard spring is sleeved on the outside of the pull rod and located at the bottom of the guide plate.

[0009] Preferably, the main component further includes an arc-shaped lever arm fixed to the rear end of the lower clamp, and a lifting ring is fixed to the upper end of the arc-shaped lever arm.

[0010] Preferably, the main body component further includes damping springs pivotally connected to the left and right sides of the middle part of the arc-shaped lever arm, and the front end of the damping springs is pivotally connected to the upper end of the upper clamp.

[0011] Preferably, the main component further includes brackets fixed on the left and right sides of the lower clamp, with support feet fixed at both the front and rear ends of the bottom of the brackets.

[0012] Preferably, the main component further includes notches and slots on the left and right sides of the front end of the lower clamp, and the outline dimensions of the notches and slots are adapted to the lock head of the upper clamp.

[0013] Preferably, the upper end of the lower clamp is provided with a supporting curved surface that matches the bottom profile of the rotor, and the lower end of the upper clamp is provided with a pressing curved surface that matches the top profile of the rotor.

[0014] Beneficial effects

[0015] This utility model provides a rotor spreader for the AW189 helicopter. Compared with the prior art, it has the following advantages:

[0016] 1. When the rotor needs to be clamped, pull down the lever of the locking assembly to move the guide plate down. The locking rod retracts inward through the guiding action of the inclined groove. At this time, flip the upper clamping seat so that its locking head passes smoothly through the notch of the lower clamping seat. After releasing the lever, the standard spring pushes the guide plate to reset, and the inclined groove drives the locking rod to extend outward and lock into the locking head, completing the stable clamping of the rotor. The clamping and locking can be completed with a simple pulling operation, which greatly simplifies the multi-step process of traditional rotor hoisting. No additional power source is required, making it suitable for hangar operation environments.

[0017] 2. When the locking assembly is released, the damping spring immediately generates a rebound force, which smoothly and controllably pulls the upper clamp upward to reset through the pivot point between its front end and the upper end of the upper clamp. The damping characteristics of the damping spring ensure that the opening action of the upper clamp is both quick and smooth, avoiding the safety hazards that may be caused by sudden opening. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the front end of the lifting mechanism in this utility model;

[0020] Figure 3 This utility model Figure 2 A schematic diagram of the structure of part A in the middle;

[0021] Figure 4 This is a schematic diagram of the side end of the lifting mechanism in this utility model.

[0022] In the diagram: 1. Lifting mechanism; 11. Main component; 111. Lower clamp; 112. Upper clamp; 113. Lock head; 114. Notch; 115. Arc-shaped lever arm; 116. Lifting ring; 117. Damping spring; 118. Bracket; 119. Support leg; 12. Locking assembly; 121. Frame base; 122. Tie rod; 123. Guide plate; 124. Inclined groove; 125. Locking rod; 126. Standard spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: an AW189 helicopter rotor sling, including a sling mechanism 1 for rotor assembly and disassembly operations, the sling mechanism 1 including:

[0025] The main component 11 includes an upper clamping seat 112 disposed above the lower clamping seat 111, and the rear end of the lower clamping seat 111 is hinged to the rear end of the upper clamping seat 112. Lock heads 113 are fixed on both the left and right sides of the bottom front end of the upper clamping seat 112.

[0026] The locking assembly 12 includes a frame 121 fixed inside the front end of the lower clamp 111. A pull rod 122 is slidably mounted through the lower end of the frame 121. A guide plate 123 is fixed to the upper end of the pull rod 122. Symmetrical inclined grooves 124 are opened on the left and right sides inside the guide plate 123. Locking rods 125 are slidably mounted through the left and right sides of the frame 121, and the inner end of the locking rod 125 is slidably mounted with the inclined groove 124. A standard spring 126 is sleeved on the outside of the pull rod 122 and located at the bottom of the guide plate 123.

[0027] In this embodiment, when the rotor needs to be clamped, the pull rod 122 of the locking assembly 12 is pulled down, causing the guide plate 123 to move down. The locking rod 125 retracts inward through the guiding action of the inclined groove 124. At this time, the upper clamping seat 112 is flipped over, so that its locking head 113 can pass smoothly through the notch 114 of the lower clamping seat 111. After the pull rod 122 is released, the standard spring 126 pushes the guide plate 123 to reset, and the inclined groove 124 drives the locking rod 125 to extend outward and lock into the locking head 113, thus completing the stable clamping of the rotor. The clamping and locking can be completed by a simple pulling operation, which greatly simplifies the multi-step process of traditional rotor hoisting, requires no additional power source, and is suitable for hangar operation environments.

[0028] Specifically, the main component 11 also includes an arc-shaped lever arm 115 fixed to the rear end of the lower clamp 111, and a lifting ring 116 is fixed to the upper end of the arc-shaped lever arm 115.

[0029] In this embodiment, after the rotor is clamped and fixed, it is hoisted by the hangar overhead crane device in conjunction with the lifting ring 116 on the arc-shaped lever arm 115. The direction is controlled by the overhead crane, and the rotor is disassembled and assembled with the help of the staff.

[0030] Specifically, the main component 11 also includes damping springs 117 pivotally connected to the left and right sides of the middle part of the arc-shaped lever arm 115, and the front end of the damping springs 117 is pivotally connected to the upper end of the upper clamp 112.

[0031] In this embodiment, when the locking assembly 12 is released, the damping spring 117 immediately generates a rebound force, which smoothly and controllably pulls the upper clamp 112 upward to reset through the pivot point between its front end and the upper end of the upper clamp 112; the damping characteristics of the damping spring 117 ensure that the opening action of the upper clamp 112 is both rapid and smooth, avoiding the safety hazards that may be caused by sudden opening.

[0032] Specifically, the main component 11 also includes brackets 118 fixed on the left and right sides of the lower clamp 111, with support legs 119 fixed at both the front and rear ends of the bottom of the brackets 118.

[0033] In this embodiment, after the main component 11 disassembles the clamped rotor, the support leg 119 provides a stable support platform for the entire device, enabling the lifting device to stand upright.

[0034] Specifically, the main component 11 also includes notches and slots 114 on the left and right sides of the front end of the lower clamp 111, and the outline size of the notches and slots 114 is adapted to the lock head 113 of the upper clamp 112.

[0035] In this embodiment, when the rotor clamping operation is performed, the notch 114 provides a smooth passage path for the lock head 113, ensuring that the locking assembly 12 can accurately complete the locking action.

[0036] Specifically, the upper end of the lower clamp 111 is provided with a support surface that matches the bottom profile of the rotor, and the lower end of the upper clamp 112 is provided with a pressing surface that matches the top profile of the rotor.

[0037] In this embodiment, the special contour design of the supporting curved surface and the pressing curved surface ensures complete contact with the rotor surface, effectively disperses the clamping stress, and avoids structural damage caused by excessive local pressure; the combined use of the hyperboloids ensures that the rotor maintains a stable posture during hoisting, preventing displacement or rotation in any direction.

[0038] The working principle and usage process of this utility model are as follows: First, when it is necessary to clamp the rotor, pull down the lever 122 of the locking assembly 12 to move the guide plate 123 down. The locking lever 125 retracts inward through the guiding action of the inclined groove 124. At this time, flip the upper clamping seat 112 so that its locking head 113 can pass smoothly through the notch 114 of the lower clamping seat 111. After releasing the lever 122, the standard spring 126 pushes the guide plate 123 to reset, and the inclined groove 124 drives the locking lever 125 to extend outward and lock into the locking head 113, thus completing the stable clamping of the rotor.

[0039] After the rotor is clamped and fixed, it is lifted by the hangar overhead crane in conjunction with the lifting ring 116 on the arc-shaped lever arm 115. The direction is controlled by the overhead crane, and the rotor is disassembled and assembled with the help of the staff.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotor spreader for an AW189 helicopter, characterized in that: Includes a lifting mechanism (1) and is used for rotor assembly and disassembly operations. The lifting mechanism (1) includes: The main component (11) includes an upper clamp (112) provided above the lower clamp (111), and the rear end of the lower clamp (111) is hinged to the rear end of the upper clamp (112). Locks (113) are fixed on the left and right sides of the bottom front end of the upper clamp (112). The locking assembly (12) includes a frame (121) fixed inside the front end of the lower clamp (111). A pull rod (122) is slidably installed through the lower end of the frame (121). A guide plate (123) is fixed at the upper end of the pull rod (122). Symmetrical inclined grooves (124) are opened on the left and right sides inside the guide plate (123). Locking rods (125) are slidably installed through the left and right sides of the frame (121). The inner end of the locking rod (125) is slidably installed with the inclined groove (124). A standard spring (126) is sleeved on the outside of the pull rod (122) and located at the bottom of the guide plate (123).

2. The AW189 helicopter rotor spreader according to claim 1, characterized in that: The main component (11) also includes an arc-shaped lever arm (115) fixed to the rear end of the lower clamp (111), and a lifting ring (116) is fixed to the upper end of the arc-shaped lever arm (115).

3. The AW189 helicopter rotor spreader according to claim 2, characterized in that: The main component (11) also includes damping springs (117) pivotally connected to the left and right sides of the middle part of the arc-shaped lever arm (115), and the front end of the damping springs (117) is pivotally connected to the upper end of the upper clamp (112).

4. The AW189 helicopter rotor spreader according to claim 1, characterized in that: The main component (11) also includes brackets (118) fixed on the left and right sides of the lower clamp (111), with support legs (119) fixed at both the front and rear ends of the bottom of the brackets (118).

5. The AW189 helicopter rotor spreader according to claim 1, characterized in that: The main component (11) also includes notches (114) on the left and right sides of the front end of the lower clamp (111), and the outline size of the notches (114) is adapted to the lock head (113) of the upper clamp (112).

6. The AW189 helicopter rotor spreader according to claim 1, characterized in that: The upper end of the lower clamp (111) is provided with a support surface that matches the bottom profile of the rotor, and the lower end of the upper clamp (112) is provided with a pressing surface that matches the top profile of the rotor.

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