CN108313326B - Integral dismounting device and method for A330 type main landing gear - Google Patents
Integral dismounting device and method for A330 type main landing gear Download PDFInfo
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- CN108313326B CN108313326B CN201810220582.2A CN201810220582A CN108313326B CN 108313326 B CN108313326 B CN 108313326B CN 201810220582 A CN201810220582 A CN 201810220582A CN 108313326 B CN108313326 B CN 108313326B
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- 238000000034 method Methods 0.000 title abstract description 13
- 238000013016 damping Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims description 34
- 230000035939 shock Effects 0.000 claims description 29
- 238000011065 in-situ storage Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/10—Manufacturing or assembling aircraft, e.g. jigs therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/40—Maintaining or repairing aircraft
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses an integral dismounting device of an A330 type main landing gear, which comprises: the shock-absorbing strut keeps the dolly, the front end and the back end of the frame of the dolly are correspondingly provided with a front hoop seat and a back hoop seat (3), the inner diameter of the hoops is matched with the front wheel axle and the back wheel axle of the dolly of the main landing gear; the rear part of the horizontal frame is provided with a transverse pivot (4) and two ends of the transverse pivot extend out; the two ends of the pivot are symmetrically hinged with the lower ends of the upper auxiliary rod and the lower auxiliary rod (7 and 2), the middle of the auxiliary rod is provided with a screw rod with adjustable length, and the upper end of the auxiliary rod can be correspondingly fixed with a damping strut of the main landing gear; the device also comprises a front adjusting seat (11), a rear adjusting seat (11) and a backing plate group, wherein the front adjusting seat (11) and the rear adjusting seat (11) have X, Y and Z-axis direction adjusting functions. The invention also relates to a method for integrally disassembling the A330 type main landing gear. The device and the method can integrally detach and install the A330 main landing gear under the condition of ensuring safety, meet specific requirements and save working hours and equipment.
Description
Technical Field
The invention relates to an integral dismounting device for an A330 type main landing gear. The invention also relates to a method for integrally disassembling the A330 type main landing gear by adopting the device.
Background
The structure of the A330 model main landing gear mainly comprises: the upper end of the vertical shock-absorbing strut is connected with other components through front and rear pivot pins, the bottom end of the shock-absorbing strut is fixedly provided with a horizontal shaft (trolley frame), the front and rear ends of the horizontal shaft are provided with transverse front and rear wheel shafts, and main landing gear wheels and brake components are arranged on the wheel shafts; the lower part of the shock strut is also provided with a lower torsion connecting rod hole site and a brake connecting rod hole site.
The main landing gear of model a330 sometimes requires disassembly for maintenance and then reinstallation. In the prior art, the disassembly mode of the main landing gear of the A330 model by each airline company and aircraft maintenance enterprises comprises four steps: the method comprises the steps of lifting the aircraft, removing wheels and brake components of the main landing gear, disassembling a trolley frame of the main landing gear by using the main landing gear, removing the main landing gear after pulling out front and rear pivot pins, and finally disassembling the main landing gear. The installation is performed in this reverse order.
In the whole disassembly and assembly process, the two steps of disassembling the wheel brake component and jacking the trolley frame occupy most of working hours, and an A330 type main landing gear disassembly and assembly device or equivalent device is needed, and the A330 type main landing gear storage vehicle is always occupied during the period from disassembly to assembly of the main landing gear. The main lifting wheel, the brake and other parts must be disassembled and assembled once in each refitting operation, and corresponding disassembly and assembly equipment and storage equipment are required to be configured. These devices are expensive and either cumbersome or delicate themselves are not suitable for poor use.
However, a part of work such as refitting the lug hole bushing of the main landing gear of the A330 sixth rib is that the parts such as the wheel brake component and the like of the main landing gear are not required to be removed, that is, if a method is used for doing the work, the whole main landing gear of the A330 model can be detached, two steps can be saved: the main landing gear wheels and the brake components are disassembled and assembled once respectively, the main landing gear trolley frame of the roof lifting main landing gear is disassembled and assembled twice by utilizing the main landing gear, and an A330 type main landing gear disassembly vehicle and a storage vehicle are not needed. This can save a lot of man-hours without the need to configure expensive equipment.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide an integral dismounting device for an A330 type main landing gear.
The second technical problem to be solved by the invention is to provide a method for integrally disassembling and assembling the A330 type main landing gear by adopting the device.
The device and the method can integrally disassemble the main landing gear of the A330 model under the condition of ensuring safety, meet specific requirements and save working hours and equipment.
The first technical problem is solved, and the technical scheme adopted by the invention is as follows.
A330 model main landing gear integral disassembly and assembly device is characterized by comprising:
a shock strut retaining trolley, the structure comprising: the bottom of the horizontal frame is provided with a travelling wheel 9, and the front end and the rear end of the frame are correspondingly provided with a front hoop seat 3 and a rear hoop seat 3; the hoop seat structure is: the left end and the right end of the horizontal plate are upright supporting plates, a semicircular groove is formed in the middle of the top edge of each supporting plate to form a lower half hoop, the lower half hoop is provided with an upper half hoop, and the inner diameter of the whole hoop is matched with the diameters of front and rear wheel shafts of the trolley frame of the A330 type main landing gear; the rear part of the horizontal frame is provided with a transverse pivot 4, and two ends of the transverse pivot extend out; the inner sides of the two ends of the pivot are symmetrically hinged with the lower end of an upper auxiliary rod 7, the middle of the upper auxiliary rod 7 is provided with a screw rod with adjustable length, and the upper end is provided with a connecting end 6 of a brake connecting rod hole which can be correspondingly fixed at the lower end of a damping strut of the A330 main landing gear, so as to keep the angle between the damping strut of the main landing gear and a trolley frame of the main landing gear; the outer sides of the two ends of the pivot are symmetrically hinged with the lower end of the lower auxiliary rod 2, the middle of the lower auxiliary rod is provided with a screw rod with adjustable length, and the upper end is provided with a connecting end 8 of a lower torsion connecting rod hole corresponding to the lower end of the damping strut of the main landing gear of the A330 type, so as to keep the angle between the damping strut of the main landing gear and the trolley frame of the main landing gear;
front and rear adjusting seats 11, the structure is: the frame is fixedly provided with a vertical Z-axis linear motion mechanism in the middle, the top surface of the Z-axis linear motion mechanism is fixedly provided with a horizontal transverse motion X-axis linear motion mechanism, and the top of the horizontal transverse motion linear motion mechanism is fixedly provided with a front-back motion Y-axis linear motion mechanism so as to realize the movement in the left-right, front-back and vertical ground directions.
The novel landing gear is characterized by further comprising a plurality of pad groups, each pad group is composed of an upper pad and a lower pad, the lower pad is made of stainless steel plates, the upper pad is made of Teflon material plates or is made of stainless steel plates, a handle is arranged on one side of the upper plate, lubricating oil is coated between the two plates, friction between the upper pad and the lower pad is reduced, and therefore main landing gear pressed on the pad is easy to finely adjust left and right relative to the ground.
The front hoop seat and the rear hoop seat are respectively fixed on the main body beam of the shock strut holding trolley through connecting pieces, and the connecting holes are long holes, so that the hoop seat can move relative to the main body beam, and enough space is ensured to be adjustable during installation.
Nylon blocks 10 are arranged on the horizontal plates of the front hoop seat and the rear hoop seat and are used for supporting the main frame main beam of the main landing gear trolley in an auxiliary mode.
Preferably, the middle adjustable length screw structure of the upper auxiliary rod and the lower auxiliary rod comprises the following components: the front section screw rod, the middle section long nut and the rear end screw rod are connected through threads, wherein the front section screw rod is connected with the middle section nut through left-handed threads in a matched mode, and the rear end screw rod is connected with the middle section nut through right-handed threads in a matched mode, so that the length adjusting effect of the upper auxiliary retaining rod and the lower auxiliary retaining rod is achieved.
The linear motion mechanisms of the front adjusting seat and the rear adjusting seat are screw nut linear motion mechanisms, and preferably, the Z-axis screw nut linear motion mechanism is as follows: the upright in-situ rotating screw rod is matched with a nut which is lifted up and down; the X-axis screw nut linear motion mechanism is as follows: a bottom plate fixed on the nut of the Z-axis screw nut linear motion machine, wherein the bottom plate is provided with a horizontally and transversely arranged screw rod which rotates in situ and is matched with a transversely moving nut; the Y-axis screw nut linear motion mechanism is as follows: the bottom plate is fixed on the nut of the X-axis screw nut linear motion machine, and is provided with screws which are horizontally placed back and forth and rotate in situ and matched with a nut which moves back and forth.
And a Teflon protection ring is arranged in the hoop of the shock-absorbing support column holding trolley.
The second technical problem is solved, and the technical scheme adopted by the invention is as follows.
The method for integrally disassembling and assembling the A330 type main landing gear by adopting the device is characterized by comprising the following steps of:
when the main landing gear is disassembled:
the first step, the front anchor ear base of the shock strut holding trolley is arranged on the front wheel axle of the main landing gear trolley frame, the rear anchor ear base is arranged on the rear wheel axle of the main landing gear trolley frame, the relative positions of the front anchor ear base and the rear anchor ear base are adjusted to be consistent with the wheel axle distance of the front wheel axle and the rear wheel axle by unscrewing 5 adjusting screws of the anchor ear base in the installation process, and then the screws are screwed down to lock the anchor ear screws.
Secondly, fixing one ends of the upper auxiliary retaining rods on two sides of the main landing gear damping strut to a brake connecting rod hole, and fixing the other ends of the upper auxiliary retaining rods on a pivot beam of the damping strut retaining trolley; one end of a lower auxiliary retaining rod is fixed on a lower torsion connecting rod hole site of a main landing gear shock strut, and the other end of the lower auxiliary retaining rod is fixed on a pivot beam of a shock strut retaining trolley; the upper auxiliary stay bar and the lower auxiliary stay bar have the function of locking the angle of the main landing gear shock absorption support post relative to the main landing gear trolley frame after the front pivot pin and the rear pivot pin are pulled out, so that the main landing gear shock absorption support post cannot pitch forwards and backwards.
And thirdly, taking the trolley frame of the main landing gear as a base, supporting the outer cylinder of the main landing gear by using the actuating cylinder to remove the shearing force of the front pivot pin and the rear pivot pin, pulling out the front pivot pin and the rear pivot pin, and then integrally detaching the main landing gear, marking the positions of wheels on the ground, and pushing away the large wing area of the airplane.
When the main landing gear is installed:
and in the first step, the four wheels marked on the ground are respectively stacked up and down, lubricating oil is smeared between the upper and lower backing plates, and the main landing gear is pushed to the position below the large wing, so that the four wheels are pressed on the backing plates around.
Secondly, placing a front adjusting seat below a front wheel shaft of a main landing gear trolley frame, rotating a Z-axis direction hand wheel of the front adjusting seat, and enabling the front adjusting seat to ascend along the Z-axis direction until the adjusting seat is attached to a damping strut maintaining trolley; the rear adjusting seat is placed below a rear wheel shaft of the main landing gear trolley frame, and a Z-axis direction hand wheel of the rear adjusting seat is rotated, so that the rear adjusting seat ascends along the Z-axis direction until the adjusting seat is attached to the damping strut holding trolley;
and thirdly, supporting the outer cylinder of the main landing gear by using the actuating cylinder, so that the positions of the front pivot pin hole and the rear pivot pin hole of the outer cylinder of the main landing gear are close to the positions of corresponding pin holes on the airplane, at the moment, the main landing gear can be installed on the airplane by pushing the main landing gear to move relative to the ground and fine adjustment of the front adjusting seat and the rear adjusting seat in the directions of X, Y, Z axes, so that the front pivot hole and the rear pivot hole of the shock-absorbing strut of the main landing gear are coaxial with the positions of corresponding pin holes on the airplane, and the front pivot pin and the rear pivot pin are inserted.
The beneficial effects are that: compared with the prior art, the device and the method for dismounting the main landing gear of the A330 model can save the wheel and the brake component of the main landing gear to be dismounted and mounted once each time, and the main landing gear is used for dismounting the roof lifting main landing gear trolley frame twice, so that the labor hour cost is saved by 6400 RMB.
Saving 120 ten thousand RMB (of course, not every disassembly and assembly can save the cost).
Drawings
FIG. 1 is one of the perspective views of a shock strut retaining cart according to an embodiment of the present invention;
FIG. 2 is a front view of a shock strut retaining trolley according to an embodiment of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a left side view of FIG. 2;
FIG. 5 is a second perspective view of a shock strut retaining cart according to an embodiment of the present invention;
FIG. 6 is a third perspective view of a shock strut retaining cart according to an embodiment of the present invention;
FIG. 7 is a perspective view of a front and rear adjustment seat mechanism according to an embodiment of the present invention;
FIG. 8 is a schematic front view of the belt of FIG. 7 in cross-section;
FIG. 9 is a schematic top view of FIG. 7;
FIG. 10 is a schematic perspective view of a pad assembly according to an embodiment of the invention;
FIG. 11 is one of the perspective views of the A330 model main landing gear;
fig. 12 is a second perspective view of the main landing gear of the type a 330.
The meaning of the reference numerals in the figures: 1-a damping strut holds the main beam of the trolley; 2-lower auxiliary holding rod; 3-a hoop seat; 4-shock struts hold the lateral pivot of the trolley; 5-front and rear anchor ear seat long holes; the upper end of the 6-upper auxiliary rod is connected with a brake connecting rod hole at the lower end of a damping strut of the A330 type main landing gear; 7-upper auxiliary rod; the connecting end of the lower torsion connecting rod hole of the lower auxiliary rod and the lower end of the shock strut of the A330 type main landing gear; 9-travelling wheels; 10-nylon blocks; 11-front and rear adjustment seats; 12-a Z-axis linear motion mechanism of the front and rear adjusting seats; 13-X axis linear motion mechanism; a 14-Y axis linear motion mechanism; 15-thrust bearings; 16-hand wheel.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The embodiment of the integral dismounting device for the A330 main landing gear comprises the following components:
a shock strut retaining trolley, the structure comprising: the bottom of the horizontal frame is provided with a travelling wheel 9, and the front end and the rear end of the frame are correspondingly provided with a front hoop seat 3 and a rear hoop seat 3; the hoop seat structure is: the horizontal plate is provided with upright supporting plates at the left end and the right end, a semicircular groove is formed in the middle of the top edge of the supporting plate to form a lower half hoop, an upper half hoop is arranged, the inner diameter of the whole hoop is matched with the diameters of front and rear wheel shafts of the trolley frame of the A330-type main landing gear, and a Teflon protection ring is arranged in the hoop; the rear part of the horizontal frame is provided with a transverse pivot 4, and two ends of the transverse pivot extend out; the inner sides of the two ends of the pivot are symmetrically hinged with the lower end of an upper auxiliary rod 7, the middle of the upper auxiliary rod 7 is provided with a screw rod with adjustable length, and the upper end is provided with a connecting end 6 of a brake connecting rod hole which can be correspondingly fixed with the lower end of a damping strut of the A330 type main landing gear, so as to keep the angle between the main landing gear damping strut and a main landing gear trolley frame; the outer sides of the two ends of the pivot are symmetrically hinged with the lower end of the lower auxiliary rod 2, the middle of the lower auxiliary rod is provided with a screw rod with adjustable length, and the upper end is provided with a connecting end 8 of a lower torsion connecting rod hole corresponding to the lower end of the damping strut of the A330 main landing gear, which is used for keeping the angle between the main landing gear damping strut and the main landing gear trolley frame.
The front hoop seat and the rear hoop seat are respectively fixed on a main body beam of the shock strut retaining trolley through 5 connecting pieces, and the connecting holes are long holes, so that the hoop seat can move relative to the main body beam, and enough space is ensured to be adjustable during installation; nylon blocks 10 are arranged on the horizontal plates of the front hoop seat and the rear hoop seat and are used for supporting the main frame main beam of the main landing gear trolley in an auxiliary mode.
The middle screw rod structure with adjustable length of the upper auxiliary rod and the lower auxiliary rod comprises the following components: the front section screw rod, the middle section long nut and the rear end screw rod are connected through threads, wherein the front section screw rod is connected with the middle section nut through left-handed threads in a matched mode, and the rear end screw rod is connected with the middle section nut through right-handed threads in a matched mode, so that the length adjusting effect of the upper auxiliary retaining rod and the lower auxiliary retaining rod is achieved.
The linear motion mechanisms of the front adjusting seat and the rear adjusting seat are manual screw nut linear motion mechanisms: the Z-axis screw nut linear motion mechanism is as follows: the upright in-situ rotating screw rod is matched with a nut which is lifted up and down; the X-axis screw nut linear motion mechanism is as follows: a bottom plate fixed on the nut of the Z-axis screw nut linear motion machine, wherein the bottom plate is provided with a screw rod which is horizontally and transversely arranged and rotates in situ and is matched with a transversely moving nut; the Y-axis screw nut linear motion mechanism is as follows: the bottom plate is fixed on the nut of the X-axis screw nut linear motion machine, and is provided with screws which are horizontally placed back and forth and rotate in situ and matched with a back and forth moving nut.
See fig. 1, 2, 3, 4, 5 and 6.
The upper auxiliary rod has two functions, namely, after the main landing gear is disassembled, the upper auxiliary rod is used for fixedly keeping the angle between the damping strut of the main landing gear and the trolley frame of the main landing gear; secondly, when the front pivot pin and the rear pivot pin are pulled out, the main landing gear shock strut weighing 1 ton is instantly tilted forwards from the upright state, an impact force can be generated, if only the lower auxiliary supporting rod pulls the main landing gear shock strut, once the lower auxiliary supporting rod is broken, the whole main landing gear shock strut is pressed on the trolley frame and is even directly tilted on the ground, and huge property loss and even personal injury can be caused. And because the upper end is the brake connecting rod hole of installing in main undercarriage shock strut lower extreme, when main undercarriage shock strut leans forward, go up the auxiliary stay and receive axial pressure, the pressure limit that can bear is greater than the lower auxiliary stay of tension, and difficult fracture can block main undercarriage shock strut further forward better. The upper auxiliary supporting rod and the lower auxiliary supporting rod act together to minimize the risk of the main landing gear shock strut toppling, thereby effectively ensuring the safety of maintenance work.
Front and rear adjusting seats 11, the structure is: the frame is fixedly provided with a vertical Z-axis linear motion mechanism in the middle, the top surface of the Z-axis linear motion mechanism is fixedly provided with a horizontal transverse motion X-axis linear motion mechanism, and the top of the horizontal transverse motion linear motion mechanism is fixedly provided with a front-back motion Y-axis linear motion mechanism so as to realize the movement in the left-right, front-back and vertical ground directions. See fig. 7, 8 and 9.
The novel landing gear is characterized by further comprising a plurality of pad groups, each pad group is composed of an upper pad and a lower pad, the lower pad is made of stainless steel plates, the upper pad is made of Teflon material plates or is made of stainless steel plates, a handle is arranged on one side of the upper plate, lubricating oil is coated between the two plates, friction between the upper pad and the lower pad is reduced, and therefore main landing gear pressed on the pad is easy to finely adjust left and right relative to the ground. See fig. 10.
Referring to fig. 11 and 12, the method for integrally assembling and disassembling the main landing gear of the model a330 by adopting the device comprises the following steps:
when the main landing gear is disassembled:
the first step, the front anchor ear base of the shock strut holding trolley is arranged on the front wheel axle of the main landing gear trolley frame, the rear anchor ear base is arranged on the rear wheel axle of the main landing gear trolley frame, the relative positions of the front anchor ear base and the rear anchor ear base are adjusted to be consistent with the wheel axle distance of the front wheel axle and the rear wheel axle by unscrewing 5 adjusting screws of the anchor ear base in the installation process, and then the screws are screwed down to lock the anchor ear screws.
Secondly, fixing one ends of the upper auxiliary retaining rods on two sides of the main landing gear damping strut to a brake connecting rod hole, and fixing the other ends of the upper auxiliary retaining rods on a pivot beam of the damping strut retaining trolley; one end of a lower auxiliary retaining rod is fixed on a lower torsion connecting rod hole site of a main landing gear shock strut, and the other end of the lower auxiliary retaining rod is fixed on a pivot beam of a shock strut retaining trolley; the upper auxiliary stay bar and the lower auxiliary stay bar have the function of locking the angle of the main landing gear shock absorption support post relative to the main landing gear trolley frame after the front pivot pin and the rear pivot pin are pulled out, so that the main landing gear shock absorption support post cannot pitch forwards and backwards.
And thirdly, taking the trolley frame of the main landing gear as a base, supporting the outer cylinder of the main landing gear by using the actuating cylinder to remove the shearing force of the front pivot pin and the rear pivot pin, pulling out the front pivot pin and the rear pivot pin, and then integrally detaching the main landing gear, marking the positions of wheels on the ground, and pushing away the large wing area of the airplane.
When the main landing gear is installed:
and in the first step, the four wheels marked on the ground are respectively stacked up and down, lubricating oil is smeared between the upper and lower backing plates, and the main landing gear is pushed to the position below the large wing, so that the four wheels are pressed on the backing plates around.
Secondly, placing a front adjusting seat below a front wheel shaft of a main landing gear trolley frame, rotating a Z-axis direction hand wheel of the front adjusting seat, and enabling the front adjusting seat to ascend along the Z-axis direction until the adjusting seat is attached to a damping strut maintaining trolley; the rear adjusting seat is placed below a rear wheel shaft of the main landing gear trolley frame, and a Z-axis direction hand wheel of the rear adjusting seat is rotated, so that the rear adjusting seat ascends along the Z-axis direction until the adjusting seat is attached to the damping strut holding trolley;
and thirdly, supporting the outer cylinder of the main landing gear by using the actuating cylinder, so that the positions of the front pivot pin hole and the rear pivot pin hole of the outer cylinder of the main landing gear are close to the positions of corresponding pin holes on the airplane, at the moment, the main landing gear can be installed on the airplane by pushing the main landing gear to move relative to the ground and fine adjustment of the front adjusting seat and the rear adjusting seat in the directions of X, Y, Z axes, so that the front pivot hole and the rear pivot hole of the shock-absorbing strut of the main landing gear are coaxial with the positions of corresponding pin holes on the airplane, and the front pivot pin and the rear pivot pin are inserted.
Claims (6)
1. A330 model main landing gear integral disassembly and assembly device is characterized by comprising:
a shock strut retaining trolley, the structure comprising: the bottom of the horizontal frame is provided with travelling wheels (9), and the front end and the rear end of the horizontal frame are correspondingly provided with a front hoop seat and a rear hoop seat (3); the rear part of the horizontal frame is provided with a transverse pivot (4) and two ends of the transverse pivot extend out; the inner sides of the two ends of the pivot are symmetrically hinged with the lower end of an upper auxiliary rod (7), the middle of the upper auxiliary rod is provided with a screw rod with adjustable length, and the upper end of the upper auxiliary rod is provided with a connecting end (6) of a brake connecting rod hole which can be correspondingly fixed at the lower end of a damping strut of the A330 type main landing gear; the outer sides of the two ends of the pivot are symmetrically hinged with the lower end of the lower auxiliary rod (2), the middle of the lower auxiliary rod is provided with a screw rod with adjustable length, and the upper end of the lower auxiliary rod is provided with a connecting end (8) of a lower torsion connecting rod hole corresponding to the lower end of the damping strut of the A330 main landing gear;
front and rear adjusting seats (11) for mounting a main landing gear of the A330 type;
the front and rear hoop seats (3) have the following structure: the left end and the right end of the horizontal plate are upright supporting plates, a semicircular groove is formed in the middle of the top edge of each supporting plate to form a lower half hoop, the lower half hoop is provided with an upper half hoop, and the inner diameter of the whole hoop is matched with the diameters of front and rear wheel shafts of the trolley frame of the A330 type main landing gear;
the front and rear adjusting seats (11) have the structure that: the middle of the frame is fixedly provided with a vertical Z-axis linear motion mechanism, the top surface of the Z-axis linear motion mechanism is fixedly provided with a horizontal transverse motion X-axis linear motion mechanism, and the top of the horizontal transverse motion linear motion mechanism is fixedly provided with a front-back motion Y-axis linear motion mechanism;
the middle screw rod structure with adjustable length of the upper auxiliary rod and the lower auxiliary rod comprises the following components: the front section screw rod, the middle section long nut and the rear end screw rod are connected through threads, wherein the front section screw rod is connected with the middle section nut through left-handed threads in a matched mode, and the rear end screw rod is connected with the middle section nut through right-handed threads in a matched mode.
2. The a330 model main landing gear integral disassembly and assembly device according to claim 1, wherein: nylon blocks (10) are arranged on the horizontal plates of the front hoop seat and the rear hoop seat.
3. The a330 model main landing gear integral disassembly and assembly device according to claim 2, wherein: the front hoop seat and the rear hoop seat are respectively fixed on a main body beam of the shock strut holding trolley through connecting pieces, and connecting holes formed on the front hoop seat and the rear hoop seat are long holes (5).
4. A main landing gear integral disassembly and assembly device of model a330 according to claim 3, wherein: the Z, X, Y axis linear motion mechanisms of the front and rear adjusting seats (11) are manual screw nut linear motion mechanisms.
5. The a330 model main landing gear integral disassembly and assembly device according to claim 4, wherein: the Z-axis linear motion mechanism is as follows: the upright in-situ rotating screw rod is matched with a nut which is lifted up and down; the X-axis linear motion mechanism is as follows: a bottom plate fixed on the nut of the Z-axis linear motion machine, wherein the bottom plate is provided with a screw rod which is horizontally and transversely arranged and rotates in situ and is matched with a transversely moving nut; the Y-axis linear motion mechanism is as follows: and the bottom plate is fixed on the nut of the X-axis linear motion machine, is provided with a screw rod which is horizontally placed back and forth and rotates in situ, and is matched with the nut which moves back and forth.
6. The a330 model main landing gear integral disassembly and assembly device according to claim 5, wherein: the novel anti-theft device is characterized by further comprising a plurality of pad groups, each pad group is composed of an upper pad and a lower pad, the lower pad is made of stainless steel plates, the upper pad is made of Teflon material plates or is made of stainless steel plates, a handle is arranged on one side of the upper plate, and lubricating oil is coated between the two plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220582.2A CN108313326B (en) | 2018-03-16 | 2018-03-16 | Integral dismounting device and method for A330 type main landing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220582.2A CN108313326B (en) | 2018-03-16 | 2018-03-16 | Integral dismounting device and method for A330 type main landing gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108313326A CN108313326A (en) | 2018-07-24 |
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| CN110171578B (en) * | 2019-04-15 | 2022-05-31 | 广州飞机维修工程有限公司 | Method for overhauling high-strength steel part of aircraft landing gear |
| CN110116307A (en) * | 2019-04-25 | 2019-08-13 | 广州飞机维修工程有限公司 | A kind of undercarriage disassemblerassembler and assembly and disassembly methods |
| CN114030638B (en) * | 2021-12-17 | 2023-08-25 | 江西洪都航空工业集团有限责任公司 | Multi-degree-of-freedom tool for auxiliary installation equipment of main landing gear of airplane |
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