Lifting appliance for thrust reverser of aero-engine

Abstract

The utility model discloses a lifting appliance for a thrust reverser of an aero-engine. The lifting appliance comprises a positioning rod, an upper connecting assembly, a lower connecting assembly, a lifting rod and a hand-cranking hoist, the upper connecting assembly and the lower connecting assembly form a positioning assembly for positioning the thrust reverser, and the positioning assembly can adapt to a hoisting hole position of the thrust reverser in a self-adaptive mode. The hand-cranking hoist drives the positioning rod to swing relative to the lifting rod so as to adjust the angle of the reverse thrust cover in the lifting process. The thrust reverser lifting appliance has the beneficial effects that 1, due to the mounting form of the fisheye joint and the nuts, the universal joint bearing adapts to the situation that the directions of lifting hole positions are different, the height of the fisheye joint is adjusted through the two nuts, and one set of thrust reverser lifting appliance is suitable for a left thrust reverser and a right thrust reverser at the same time; 2, the lifting angle is adjusted, so that on one hand, the opening or closing state of the reverse thrust cover is met, and the mounting and using flexibility of the lifting appliance is greatly improved; and on the other hand, the posture of the reverse thrust cover is changed in the lifting process, the requirement for different placement states when the reverse thrust cover is stored is met, and additional tool equipment is saved.

Description

Technical Field

[0001] This utility model relates to lifting devices, and more particularly to a lifting device for an aircraft engine thrust reverser cowling. Background Technology

[0002] For airlines, routine inspection, maintenance, service, and replacement of aircraft engines are unavoidable and crucial tasks, many of which require the removal of the engine thrust reverser cowling (hereinafter referred to as "thrust reverser cowling") before execution. Each engine's thrust reverser consists of two cowlings, one on the left and one on the right, each weighing approximately 350 kg. Each cowling is connected to the aircraft's pylon via two upper lugs, and to the engine core via actuators and other components at the bottom. The surface of the thrust reverser is an irregular arc, with two lifting holes pre-drilled on each of the upper and lower mounting edges, for a total of four holes. Typically, the thrust reverser has a closed state and a fixed-angle open state. Removing and installing the thrust reverser requires specialized lifting equipment, utilizing the four pre-drilled lifting points and avoiding the cowling's surface shape to lift and lower it. Furthermore, the thrust reverser is usually stored horizontally, while it is installed vertically, requiring the lifting equipment to be able to change the cowling's orientation during the lifting process. Because the pre-drilled holes for the lifting devices on the thrust reverser are not coplanar in space and all have a certain angle, the traditional rigid connection makes the installation of the lifting devices extremely difficult, and may even result in two of the four lifting points being unable to install bolts. Utility Model Content

[0003] This application aims to design a lifting device for an aircraft engine thrust reverser cowling, which can lift the cowling through four lifting points and has the function of changing the thrust reverser attitude.

[0004] This application provides a lifting device for an aircraft engine thrust reverser cowling, comprising:

[0005] The positioning rod is C-shaped, with the upper and lower installation positions at its two ends, respectively.

[0006] The upper connection assembly includes: a hinge beam installed at the upper mounting position and two first fisheye joints that are detachable from both ends of the hinge beam; the first fisheye joints are threadedly connected to two first nuts for mounting the thrust reverser.

[0007] The lower connection assembly includes: a locking beam installed at the lower mounting position and two second fisheye connectors that are detachable from both ends of the locking beam; the second fisheye connectors are threadedly connected to two second nuts for mounting the thrust reverser.

[0008] The lifting rod is hinged to the positioning rod at its lower part around a horizontal axis, and a lifting buckle is connected to its upper part.

[0009] The hand-operated hoist has two hooks connected to the positioning rod and the lifting hook respectively, and is used to drive the positioning rod to swing relative to the lifting rod by shortening or lengthening the length of the iron chain.

[0010] In some embodiments, the upper connecting part is detachably connected to the two ends of the hinge beam; the upper connecting part has two upper mounting points for connecting to the hinge beam; and the upper lifting point is arranged on the upper connecting part and is staggered from the middle positions of the two upper mounting points.

[0011] In some embodiments, the lower connecting part is detachably connected to the two ends of the locking beam; and the lower connecting part is rotatable relative to the locking beam; and the lower lifting point is arranged on the lower connecting part.

[0012] In some embodiments, the connection between the locking beam and the positioning rod is a hinge connection.

[0013] In some embodiments, the first fish-eye joint and the hinge beam are detachably connected by a quick-release pin, and the second fish-eye joint and the locking beam are detachably connected by a quick-release pin.

[0014] In some embodiments, the lifting belt is further connected between the lifting rod and the lifting hook.

[0015] In summary, the lifting device for the aero-engine reverse thrust cover in the present application comprises a positioning rod, an upper connecting assembly, a lower connecting assembly, a lifting rod, and a hand-operated hoist. The upper connecting assembly and the lower connecting assembly form a positioning assembly for positioning the reverse thrust cover, and the positioning assembly is self-adaptable to the lifting hole position of the reverse thrust cover. The hand-operated hoist drives the positioning rod to swing relative to the lifting rod, so as to adjust the angle of the reverse thrust cover during lifting. The beneficial effects are as follows: 1. The installation form of the fish-eye joint and the nut is used, the universal joint bearing is self-adaptable to the different orientations of the lifting hole position, the height of the fish-eye joint is adjusted by two nuts, and one set of reverse thrust cover lifting device is suitable for two reverse thrust covers. 2. The lifting angle is adjusted, which can meet the installation of the lifting device in the opened or closed state of the reverse thrust cover, greatly increasing the flexibility of use; on the other hand, the posture of the reverse thrust cover is changed during lifting, which meets the different placement requirements of the reverse thrust cover during storage, and saves additional tools and equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to better illustrate the technical solutions in the embodiments or background of the present application, the drawings required to be used in the embodiments or background of the present application will be described below.

[0017] Figure 1 is a schematic view of the present application;

[0018] Figure 2 is a front view of the present application;

[0019] Figure 3 is a side view of the present application;

[0020] Figure 4 is a schematic view of the upper connecting assembly;

[0021] Figure 5 is a schematic view of the lower connecting assembly.

[0022] in the figure,

[0023] 1, positioning rod; 1a, upper connecting head; 1a1, first connecting pin; 1b, lower connecting head; 1c, lifting lug;

[0024] 2, upper connecting assembly; 2a, hinged beam; 2a1, upper lifting point; 2a2, upper connecting part; 2a3, third connecting pin; 2b, first fish-eye joint; 2b1, first nut; 2c, second connecting pin;

[0025] 3, lower connecting assembly; 3a, locking beam; 3a1, lower lifting point; 3a2, lower connecting part; 3b, second fish-eye joint; 3b1, second nut; 3c, fourth connecting pin;

[0026] 4, lifting rod; 4a, lifting buckle; 4b, lifting belt;

[0027] 5, hand-operated hoist; 5a, lifting hook; 5b, iron chain. DETAILED DESCRIPTION

[0028] Further description will be made in combination with the drawings, which are merely examples and not drawn strictly according to scale. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood as the general meanings understood by the persons with ordinary skills in the art to which the present disclosure belongs. The terms “first”, “second” and similar words used in the present disclosure do not represent any order, number or importance, but are only used to distinguish different components. The terms “include” or “contain” and similar words mean that the components or objects appearing before the words cover the components or objects listed after the words and their equivalents, without excluding other components or objects. The terms “connect” or “connected” and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms “upper”, “lower”, “left”, “right” and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly. The embodiments in the present application can be combined with each other without conflict.

[0029] Please refer to Figure 1 and Figure 2 , a lifting device of an aero-engine reverse thrust cover, comprising a positioning rod 1, an upper connecting assembly 2, a lower connecting assembly 3, a lifting rod 4 and a hand-operated hoist 5.

[0030] The positioning rod 1 is C-shaped, which is matched to the shape of the outer side wall of the aero-engine reverse thrust cover. More specifically, the positioning rod 1 can be composed of multiple straight rod bodies welded together, and the straight rod bodies can be rectangular tubes with a specification of 75*75*5, which can be made of Q235 material. The two ends of the positioning rod 1 are respectively an upper mounting position and a lower mounting position.

[0031] Referring to Figure 1 and Figure 4 , the upper connecting assembly 2 includes a hinge beam 2a and two first fish-eye joints 2b.

[0032] The hinge beam 2a is mounted at the upper mounting position. More specifically, the upper mounting position of the positioning rod 1 can be an upper connecting head 1a, which can be made of Q355 material, one end of which can be inserted into the rectangular tube, and the other end can be provided for mounting the hinge beam 2a. The hinge beam 2a can be sleeved into the end, and the hinge beam 2a can be fixed to the upper connecting head 1a by two first connecting pins 1a1.

[0033] The two first fish-eye joints 2b are respectively detachably connected to the upper hanging points 2a1 at the two ends of the hinge beam 2a, and each first fish-eye joint 2b is also threadedly connected with two first nuts 2b1 for mounting the reverse thrust cover. The upper connecting assembly 2 and the upper position of the reverse thrust cover are butt jointed. The two first fish-eye joints 2b are mounted at the two upper hanging points 2a1 of the hinge beam 2a which are reserved. More specifically, a second connecting pin 2c can be used to pass through the universal joint bearing of the upper hanging point 2a1 and the first fish-eye joint 2b. The stud of the first fish-eye joint 2b passes through the corresponding hanging hole position of the reverse thrust cover, and the two first nuts 2b1 are turned to clamp and fix the reverse thrust cover.

[0034] The universal joint bearing enables the first fish-eye joint 2b to rotate within a certain range relative to the hinge beam 2a, and the two first nuts 2b1 enable the reverse thrust cover to be adjusted along the stud at the fixed position of the first fish-eye joint 2b. In combination, the reverse thrust cover can be conveniently mounted at the two upper hanging points 2a1.

[0035] Referring to Figure 4 In some embodiments, the two ends of the hinge beam 2a are detachably connected with an upper connecting part 2a2. The upper connecting part 2a2 has two upper mounting points for connecting with the hinge beam 2a. More specifically, two third connecting pins 2a3 can be used to pass through the hinge beam 2a and the upper connecting part 2a2. The upper hanging points 2a1 are arranged at the upper connecting part 2a2, which are staggered at the intermediate positions of the two upper mounting points.

[0036] After the upper connecting part 2a2 is detached from the hinge beam 2a, the upper connecting part 2a2 can be reversed and then reinstalled to the hinge beam 2a, so that the two upper mounting points are exchanged at the connecting positions of the hinge beam 2a, and the upper lifting point 2a1 also changes the orientation, corresponding to different positions of the reverse thrust cover. Compared with the direct fixing of the upper lifting point 2a1 on the hinge beam 2a, it is more convenient to set the lifting hole position on the reverse thrust cover.

[0037] Please refer to Figure 1 and Figure 5 The lower connecting assembly 3 includes a locking beam 3a and two second fish-eye joints 3b. The reverse thrust cover is first installed to the upper connecting assembly 2, preliminarily fixed, and then installed with the lower connecting assembly 3.

[0038] The locking beam 3a is installed at the lower mounting position. Referring to the hinge beam 2a and the upper mounting position, more specifically, the lower mounting position of the positioning rod 1 can be a lower connecting head 1b.

[0039] The two second fish-eye joints 3b are respectively detachable at the two lower lifting points 3a1 of the locking beam 3a, and each second fish-eye joint 3b is also threadedly connected with two second nuts 3b1 for mounting the reverse thrust cover. The two second fish-eye joints 3b are installed at the two lower lifting points 3a1 of the locking beam 3a which are reserved. More specifically, a fourth connecting pin 3c can be used to pass through the lower lifting point 3a1 and the universal joint bearing of the second fish-eye joint 3b. The stud of the second fish-eye joint 3b passes through the corresponding lifting hole position of the reverse thrust cover, and the two second nuts 3b1 are turned to clamp and fix the reverse thrust cover.

[0040] The universal joint bearing enables the second fish-eye joint 3b to rotate within a certain range relative to the locking beam 3a, and the two second nuts 3b1 enable the reverse thrust cover to be adjusted along the stud at the fixed position of the second fish-eye joint 3b. In combination, the reverse thrust cover can be conveniently installed at the two lower lifting points 3a1.

[0041] Please refer to Figure 5 In some embodiments, the connection between the locking beam 3a and the positioning rod 1 is hinged. That is, the locking beam 3a can swing relative to the positioning rod 1.

[0042] Compared with the fixed connection between the locking beam 3a and the lower connecting head 1b with reference to the hinge beam 2a and the upper mounting position, by swinging the locking beam 3a, the two lower lifting points 3a1 change positions, corresponding to different positions of the reverse thrust cover, and it is more convenient to set the lifting hole position on the reverse thrust cover.

[0043] Please refer to Figure 5In some embodiments, the lower connecting part 3a2 is connected to both ends of the locking beam 3a. The lower connecting part 3a2 can rotate relative to the locking beam 3a, and the lower hanging point 3a1 is arranged on the lower connecting part 3a2. More specifically, the locking beam 3a can be fixedly provided with a connecting sleeve, the lower connecting part 3a2 can be provided with a plug column for being inserted into the connecting sleeve, and the end of the plug column that penetrates out of the connecting sleeve can be inserted with a plug pin for limiting separation of the plug column and the connecting sleeve. The lower connecting part 3a2 can rotate around the axis of the plug column.

[0044] The rotation range of the universal joint bearing of the second fish-eye joint 3b is relatively small. Compared with the case where the lower hanging point 3a1 is directly fixed on the locking beam 3a, the lower connecting part 3a2 rotates around the axis of the plug column, which is more convenient for connecting the universal joint bearing of the second fish-eye joint 3b.

[0045] When the reverse thrust cover is disassembled, the connection between the reverse thrust cover and the first fish-eye joint 2b and the second fish-eye joint 3b can be released, or the connection between the first fish-eye joint 2b and the hinge beam 2a and the second fish-eye joint 3b and the locking beam 3a can be released.

[0046] Please refer to Figure 4 and Figure 5 In some embodiments, the first fish-eye joint 2b and the hinge beam 2a and the second fish-eye joint 3b and the locking beam 3a are both provided with a detachable quick-release pin. That is, the second connecting pin 2c and the fourth connecting pin 3c are quick-release pins.

[0047] It is more convenient to release and establish the connection between the first fish-eye joint 2b and the hinge beam 2a and the second fish-eye joint 3b and the locking beam 3a.

[0048] Please refer to Figure 1 and Figure 2 The lower part of the hoisting rod 4 is hingedly connected to the positioning rod 1 around a horizontal axis, and the upper part is connected with a lifting hook 4a. More specifically, the hoisting rod 4 is C-shaped to avoid the front edge of the large wing, and the hoisting rod 4 can be composed of three straight rod bodies welded together. The straight rod bodies can be rectangular tubes with dimensions of 70*50*5 and 50*50*5, and the rectangular tubes can be made of Q355 material.

[0049] Two hooks 5a of the hand-operated hoist 5 are connected to the positioning rod 1 and the lifting hook 4a respectively. More specifically, the positioning rod 1 can be fixedly connected with a lifting lug 1c, and the plate part of the lifting lug 1c can be made of Q235 material. For the hand-operated hoist 5, the connecting position of the hook 5a on the shell can be the positioning rod 1, and correspondingly, the connecting position of the hook 5a on the iron chain 5b is the lifting hook 4a. The hand-operated hoist 5 can be the model N04700111 of Yale. The lifting points of the hand-operated hoist 5 and the positioning rod 1, and the lifting points of the hand-operated hoist 5 and the lifting hook 4a are in the same vertical plane. When the hand plate of the hand-operated hoist 5 is shaken, the length of the iron chain 5b is shortened or lengthened to drive the positioning rod 1 to swing relative to the lifting rod 4, so as to adjust the angle of the reverse thrust cover during the lifting process.

[0050] Please refer to Figure 3 In order to prevent the reverse thrust cover from being deflected or having unstable center of gravity during lifting, the center of gravity of the reverse thrust cover is also located in the vertical plane.

[0051] Please refer to Figure 1 and Figure 2 In some embodiments, the lifting rod 4 and the lifting hook 4a are further connected with a sling 4b.

[0052] The lifting rod 4 and the lifting hook 4a bear the weight of the reverse thrust cover, and the sling 4b uses the combined sling of the model 1021681 of Crosby. In order to have better adjustment effect, the lifting hook 4a uses the jaw-type swivel hook of the model 1016475 of Crosby.

Claims

1. A hanger for an aircraft engine thrust reverser, characterized in that, The utility model relates to a kind of crane, including: Positioning rod (1), C-shaped, two ends are upper installation position and lower installation position respectively; Upper connecting assembly (2), including: hinge beam (2a) installed in upper installation position and two first fish eye joints (2b) respectively detachable in two ends of hinge beam (2a) of upper lifting point (2a1);First fish eye joint (2b) is screwed with two first nuts (2b1) for installing reverse push cover; Lower connecting assembly (3), including: lock catch beam (3a) installed in lower installation position and two second fish eye joints (3b) respectively detachable in two ends of lock catch beam (3a) of lower lifting point (3a1);Second fish eye joint (3b) is screwed with two second nuts (3b1) for installing reverse push cover; Hoisting rod (4), lower position is hinged to the positioning rod (1) around horizontal axis, and upper position is connected with lifting buckle (4a); Hand-operated hoist (5), two hooks (5a) are connected to the positioning rod (1) and lifting buckle (4a) respectively, for driving the positioning rod (1) swing relative to the hoisting rod (4) by shortening or lengthening the length of iron chain (5b).

2. An aircraft engine thrust-reverser hanger according to claim 1, wherein, Two ends of hinge beam (2a) are detachably connected with upper connecting part (2a2);Upper connecting part (2a2) has two upper mounting points for connecting with hinge beam (2a);Upper lifting point (2a1) is arranged in upper connecting part (2a2), staggered in the middle position of two upper mounting points.

3. An aircraft engine thrust-reverser hanger according to claim 1, wherein, Lower connecting part (3a2) is connected to two ends of lock catch beam (3a), and lower connecting part (3a2) can rotate relative to lock catch beam (3a);Lower lifting point (3a1) is arranged in lower connecting part (3a2).

4. An aircraft engine thrust-reverser hanger according to claim 1, wherein, The connection between lock catch beam (3a) and the positioning rod (1) is hinged.

5. An aircraft engine thrust-reverser hanger according to claim 1, wherein, First fish eye joint (2b) and hinge beam (2a) and second fish eye joint (3b) and lock catch beam (3a) between are all arranged for detachable quick release pin.

6. An aircraft engine thrust-reverser hanger according to claim 1, wherein, Hoisting rod (4) and lifting buckle (4a) are also connected with lifting belt (4b).

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