CN113184727B

CN113184727B - Combined tool for assisting in dismounting and mounting aircraft brake hub

Info

Publication number: CN113184727B
Application number: CN202110475773.5A
Authority: CN
Inventors: 高生虎; 江南; 张彩军
Original assignee: HNA Aviation Technic Co Ltd
Current assignee: HNA Aviation Technic Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-07-05
Anticipated expiration: 2041-04-29
Also published as: CN113184727A

Abstract

A combined tool for assisting in dismounting and mounting an aircraft brake hub comprises a lifting mechanism, a supporting mechanism and an aligning mechanism arranged on the lifting mechanism and the supporting mechanism. The hoisting mechanism comprises a hand-operated hoisting assembly; the supporting mechanism comprises a hand-operated transverse moving assembly, a jacking assembly and a turning assembly; the alignment mechanism comprises a first aiming module and a second aiming module, the first aiming module comprises a first sighting device arranged on the balancing weight, a first target piece arranged on the lifting frame and a second target piece arranged on the second carriage; the second aiming module comprises a second aiming device arranged on the second frame, a third target piece arranged at the rear side of the overturning bucket and a fourth target piece magnetically adsorbed at the axle center of the airplane wheel axle. The combination tool of present case is including lifting by crane mechanism, supporting mechanism and counterpoint mechanism simultaneously for the brake hub hoist and mount the process of turning over in the fill can accurate counterpoint, the brake hub installs the epaxial process also can accurate counterpoint of aircraft wheel, effectively improves the dismouting efficiency of brake hub.

Description

Combined tool for assisting in dismounting and mounting aircraft brake hub

Technical Field

The invention relates to the technical field of brake equipment of passenger planes, in particular to a combined tool for assisting in dismounting a brake hub of an airplane.

Background

The disassembly and assembly brake hub is one of daily works of various airplane maintenance bases of the marine aviation company. In the process of installing the brake hub, the brake hub is taken out from a packing box, the brake hub is ensured to be vertical to the airplane wheel shaft, the brake hub is kept in fit with the shaft hole of the airplane wheel shaft through continuous up-down and left-right adjustment, and the brake hub can be easily installed on the airplane wheel shaft; the brake hub removal process is the reverse of the installation process. In the operation of disassembling and assembling the brake hub of the airplane, effective auxiliary hoisting tools and auxiliary mounting tools are lacked in the existing maintenance bases, and workers usually lift the tools by hands. Because the brake hub is small in size and heavy in weight (160 kilograms), two people lift the brake hub out of a packing box with the height of 60 centimeters, the brake hub is required to be kept in a standing posture, and other people command continuous up-down and left-right adjustment to enable the brake hub to be matched with a shaft hole of an airplane wheel shaft, so that time and labor are wasted, and generally, four to five people are required for dismounting the brake hub every time, and two hours are consumed for completing dismounting. Simultaneously, whole dismouting process is also unsafe, and the impaired, the personnel injured's condition of brake hub takes place for some time, seriously influences the work efficiency of dismouting brake hub.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art, and provides a combined tool for assisting in dismounting and mounting an aircraft brake hub, which simultaneously comprises a hoisting mechanism, a supporting mechanism and an aligning mechanism, so that the brake hub can be accurately aligned in the process of hoisting the brake hub into a turnover bucket, the brake hub can be accurately aligned in the process of mounting the brake hub on an aircraft wheel shaft, and the dismounting and mounting efficiency of the brake hub is effectively improved.

In order to achieve the purpose, the scheme is realized by the following technical scheme:

a combined tool for assisting in dismounting and mounting an aircraft brake hub comprises a hoisting mechanism, a supporting mechanism and aligning mechanisms which are distributed on the hoisting mechanism and the supporting mechanism.

The lifting mechanism comprises a hand-operated lifting assembly;

the supporting mechanism comprises a hand-operated transverse moving assembly, a jacking assembly and a turning assembly;

the alignment mechanism comprises a first aiming module and a second aiming module; the first sighting module comprises a first sighting device arranged on the counterweight block, a first target piece arranged on the lifting frame and a second target piece arranged on the second carriage; the second aiming module comprises a second sighting device arranged on the second carriage, a third target piece arranged on the overturning bucket and positioned on the rear side of the bucket bottom, and a fourth target piece magnetically adsorbed at the axle center of the airplane wheel axle.

Further, the hoisting mechanism comprises a first frame, a hoisting assembly and a telescopic cantilever assembly, wherein the hoisting assembly and the telescopic cantilever assembly are installed on the first frame, and the telescopic cantilever assembly is fixed through a cantilever support.

Further, the hoist and mount subassembly includes:

the hoisting box is internally and rotatably provided with a winding drum, a steel cable is wound on the winding drum, a rotating shaft of the winding drum is connected with a hoisting hand wheel outside the hoisting box, and an anti-return assembly is arranged between the rotating shaft of the winding drum and the hoisting hand wheel;

the first pulley is rotatably arranged at the front end of the telescopic cantilever assembly;

the second pulley is rotatably arranged at the rear end of the telescopic cantilever assembly, and the steel cable on the winding drum passes through the opening at the top of the hoisting box, sequentially winds the first pulley and the second pulley and freely droops from the second pulley;

the brake hub lifting plate is provided with a lifting ring in the center, the lifting ring is in butt joint with a lifting hook at the tail end of the steel cable, and two arc-shaped limiting plates are symmetrically arranged on two sides of the lifting ring;

the telescopic boom assembly comprises: the telescopic arm is sleeved in the cantilever sleeve in a sliding way, and the telescopic hand wheel is rotatably arranged at the front end of the cantilever sleeve; a mounting hole is formed in the front end face of the cantilever sleeve, and a rotating shaft of the telescopic hand wheel penetrates through the mounting hole to be rotatably mounted in the cantilever sleeve and is rotatably connected to the telescopic arm;

the anti-retreat assembly includes: the device comprises a stator, a clutch rotor, a first bakelite pad, a ratchet, a second bakelite pad and an elastic pawl, wherein the stator is coaxial with a winding drum rotating shaft and is fixedly arranged on the outer wall of a winding box; the stator is adjacent to the clutch moving plate, a key groove is formed in the inner ring of the clutch moving plate and matched with a key arranged on a rotating shaft of the winding drum, and the lifting hand wheel is rotatably installed on the outer side of the second bakelite pad.

Furthermore, a reinforcing rib is connected between the cantilever sleeve and the cantilever support, so that the cantilever sleeve in the horizontal direction, the cantilever support in the vertical direction and the oblique reinforcing rib are connected with each other to form a stable triangular structure; the telescopic boom assembly is wholly inclined upwards by 15 degrees.

Furthermore, a balancing weight is arranged at the position above the lifting hook on the steel cable; the hoisting assembly is fixed to the front portion of the first frame through the hoisting assembly support, and the hoisting assembly support is connected with the first frame and the cantilever support at the same time.

Further, the supporting mechanism comprises a second frame and a lifting frame arranged on the second frame, and a turning hopper is rotatably arranged on the lifting frame; sliding grooves are vertically formed in the guard plates on the two sides of the second frame and are matched with the sliding plates arranged on the two sides of the lifting frame; the lifting frame is also provided with a transverse moving component for driving the turnover bucket to transversely move and a locking component capable of locking a brake hub in the turnover bucket; the second frame is also provided with a jacking component for driving the lifting frame to lift and a turning component for driving the turning bucket to turn.

Furthermore, the turnover bucket comprises an arc-shaped bucket wall and a semicircular bucket bottom, first connecting rods are vertically arranged on the bucket bottom at intervals, the lower end of each first connecting rod is fixed on the bucket bottom, and the upper end of each first connecting rod is rotatably arranged on a turnover shaft at the front end of the lifting frame; a second connecting rod is transversely arranged on the bucket bottom and is rotatably connected with the output end of an oil cylinder in the overturning assembly;

further, the traversing assembly comprises a traversing screw and a sliding seat; the transverse screw and the turning shaft are arranged on the lifting frame in parallel at intervals, and one end of the transverse screw is connected with a transverse hand wheel; the sliding seat is sleeved on the transverse moving screw rod and the turnover shaft in a sliding mode, and an internal thread is arranged at one end, connected with the transverse moving screw rod, of the sliding seat and matched with an external thread on the transverse moving screw rod;

the locking assembly comprises a locking drum, a locking rope is wound in the locking drum, the outer end of the locking rope is connected with a locking hook, and a reset button is further arranged on the shell of the locking drum;

the jacking assembly comprises a jack arranged on the second frame, the top of the jack props against the lifting frame, the jack is driven by a jacking screw rod, and a jacking hand wheel is arranged at the tail end of the jacking screw rod;

the overturning assembly comprises an oil cylinder, an oil pump, an oil tank, a pressure accumulator, a first oil valve, a second oil valve and a plurality of oil pipes, wherein the oil cylinder, the oil pump, the oil tank, the pressure accumulator, the first oil valve and the second oil valve are fixedly arranged on the second frame; the first oil valve is respectively connected with an oil tank, a first oil inlet of the oil cylinder positioned at the rear side of the piston and a first oil inlet of the oil pump through oil pipes; the second oil valve is respectively connected with the pressure accumulator, a second oil inlet of the oil cylinder positioned on the front side of the piston and a second oil inlet of the oil pump through oil pipes; the output end of the oil cylinder is sleeved on the second connecting rod of the turnover bucket.

Furthermore, an arched aligning opening is formed in the center of the circle of the bucket bottom, and lighting lamp tubes are symmetrically arranged on the edges of the two sides of the aligning opening.

Further, the first oil valve and the second oil valve are both three-way control valves; a hand-operated control rod is arranged on the oil pump; and the jacking screw rod is rotatably arranged on the second frame through a sleeve.

Compared with the prior art, the invention has the beneficial effects that: the combination tool of present case is including lifting by crane mechanism, supporting mechanism and counterpoint mechanism simultaneously for the brake hub hoist and mount the process of turning over in the fill can accurate counterpoint, the brake hub installs the epaxial process also can accurate counterpoint of aircraft wheel, effectively improves the dismouting efficiency of brake hub.

In order that the invention may be more clearly understood, preferred embodiments of the invention will now be described with reference to the accompanying drawings.

Drawings

Fig. 1 and 2 are schematic overall structures of the present invention;

fig. 3 is a schematic view of an installation position of the alignment mechanism 300 according to the present invention;

fig. 4 and 5 are schematic diagrams illustrating an overall structure of the hoisting mechanism 100 according to the present invention;

fig. 6 is a schematic structural diagram of a front view of the hoisting mechanism 100 according to the present invention;

fig. 7 and 8 are schematic overall structural views of the supporting mechanism 200 according to the present invention;

FIG. 9 is a front view of the support mechanism 200 of the present invention;

FIG. 10 is an exploded view of the support mechanism 200 of the present invention;

FIG. 11 is a schematic diagram of the cross-car assembly, the locking assembly, and the jacking assembly of the support mechanism 200 of the present invention;

fig. 12 and 13 are schematic structural views of the turnover assembly in the support mechanism 200 of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are used primarily for distinguishing different devices, elements, or components (the specific types and configurations may be the same or different), and are not used for indicating or implying relative importance among the indicated devices, elements, or components, but are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 13, a combination tool for assisting in assembling and disassembling an aircraft brake hub includes a lifting mechanism 100, a supporting mechanism 200, and an alignment mechanism 300 disposed on the lifting mechanism and the supporting mechanism. The lifting mechanism 100 comprises a hand-operated lifting assembly, and the lifting assembly lifts the brake hub into the turnover bucket in the supporting mechanism 200; the supporting mechanism 200 comprises a hand-operated transverse moving assembly, a jacking assembly and a turning assembly, so that the brake hub in the turning bucket can be adjusted to initially align with the axle of the airplane; the alignment mechanism 300 comprises two groups of sighting devices capable of emitting laser, so that the hoisting assembly can more accurately place the brake hub into the overturning bucket, and the brake hub in the overturning bucket can be more accurately aligned and installed on an airplane wheel shaft.

Referring to fig. 4 to 6, the hoisting mechanism 100 includes a first frame 101, a hoisting assembly mounted at a front end of the first frame 101, and a telescopic boom assembly fixed to the first frame 101 through a boom 103. The front end of the first frame 101 is also provided with a steering wheel, and the rear end of the first frame 101 is provided with a travelling wheel; a traction rod is connected to a steering shaft of the steering wheel, so that the hoisting mechanism can be manually pushed and pulled to move or pulled to move by a tractor.

The hoisting assembly is fixed at the front part of the first frame 101 through a hoisting assembly bracket 120, the hoisting assembly bracket 120 is connected with the first frame 101 and the cantilever bracket 103 at the same time, and the hoisting assembly comprises:

a winding drum (not shown) is rotatably mounted in the winding drum 121, a steel cable 122 is wound on the winding drum, a rotating shaft of the winding drum is connected with a lifting hand wheel 123 outside the winding drum 121, a self-locking anti-return assembly 124 is mounted between the rotating shaft of the winding drum and the lifting hand wheel 123, and the anti-return assembly 124 is used for preventing the winding drum from freely reversing when the steel cable 122 lifts the brake hub;

a first pulley 125 rotatably mounted at the front end of the telescopic boom assembly;

a second pulley 126 rotatably installed at the rear end of the telescopic boom assembly, the wire rope 122 on the reel passing through the opening at the top of the hoist case 121 and sequentially wound around the first pulley 125 and the second pulley 126, and hanging down freely from the second pulley 126;

the brake hub hanging plate 127 is characterized in that a hanging ring is arranged in the center of the brake hub hanging plate 127 and used for being in butt joint with a hanging hook at the tail end of the steel cable 122, two arc-shaped limiting plates are symmetrically arranged on two sides of the hanging ring, and the brake hub hanging plate 127 can be clamped on a brake hub to ensure that the brake hub keeps balance in the hoisting process.

In addition, a weight block is further provided on the wire rope 122 at a position above the hook, so that the wire rope 122 wound around the first and

second pulleys

125 and 126 can freely hang down.

Further, the anti-back-off assembly 124 comprises a stator, a clutch rotor, a first bakelite pad, a ratchet, a second bakelite pad, and an elastic pawl, wherein the stator is coaxial with the winding drum rotating shaft and is fixedly installed on the outer wall of the winding drum 121; the stator is adjacent to the clutch moving plate, a key groove is formed in the inner ring of the clutch moving plate and matched with a key arranged on a rotating shaft of the winding drum, and the lifting hand wheel 123 is rotatably installed on the outer side of the second bakelite pad. When the lifting hand wheel 123 is rotated forward, the clutch moving plate, the first bakelite pad, the ratchet wheel and the second bakelite pad rotate forward along with the lifting hand wheel 123 and the rotating shaft of the winding drum, the winding drum also rotates forward, and the brake hub on the steel cable 122 is slowly lifted. When the lifting hand wheel 123 stops rotating, the winding drum cannot rotate reversely because the elastic pawl locks the ratchet wheel, so that the brake hub is suspended in the air. When the brake hub is dismounted and the lifting hand wheel 123 needs to be rotated reversely to put down the hook, the ratchet wheel can be kept still, the clutch moving piece is separated from the static piece, the clutch moving piece, the first bakelite pad and the second bakelite pad rotate reversely along with the lifting hand wheel 123 and the rotating shaft of the winding drum, the winding drum also rotates reversely, and the hook on the steel cable 122 is slowly put down.

The telescopic cantilever assembly comprises a cantilever sleeve 141, a telescopic arm 142 slidably sleeved in the cantilever sleeve 141, and a telescopic hand wheel 143 rotatably mounted at the front end of the cantilever sleeve 141. Specifically, a mounting hole is formed in the front end surface of the boom sleeve 141, and a rotating shaft of the telescopic hand wheel 143 passes through the mounting hole to be rotatably mounted in the boom sleeve 141 and rotatably connected to the telescopic arm 142. When the telescopic hand wheel 143 is manually rotated, the rotating shaft of the telescopic hand wheel 143 drives the telescopic arm 142 to be telescopic in the sleeve, so that the telescopic length of the telescopic arm 142 in the horizontal direction is adjustable. Preferably, in the embodiment, the telescopic cantilever assembly is integrally inclined upwards by 15 degrees; reinforcing ribs are connected between the cantilever sleeve 141 and the cantilever support 103, so that the cantilever sleeve 141 in the horizontal direction, the cantilever support 103 in the vertical direction and the oblique reinforcing ribs are connected with each other to form a stable triangular structure; the rotating shaft of the telescopic hand wheel 143 is a screw, and the external thread of the screw is matched with the internal thread of the mounting hole.

The lifting mechanism 100 uses hand-operated lifting and hand-operated control of the telescopic length of the cantilever, is suitable for various scenes with no electricity or inconvenient power pulling, and has good applicability; the anti-back component capable of self-locking is arranged, the lifting hand wheel cannot rotate reversely under the condition that the brake hub is hung in the air without special intervention, and the safety is high; the first frame is provided with a steering wheel and a travelling wheel, a hand-operated vertical hoisting device and a hand-operated horizontal control cantilever, so that the aerial posture of the brake hub can be adjusted in multiple directions and multiple angles, time and labor are saved, and the hoisting efficiency of the aircraft brake hub can be effectively improved; the manufacturing cost is low, the structure is simple and stable, and the later maintenance amount is small.

Referring to fig. 7 to 10, the supporting mechanism 200 includes a second frame 201, a lifting frame 202 mounted on the second frame 201, and a turning bucket 203 rotatably mounted on the lifting frame 202 for placing a brake hub; the lifting frame 202 is also provided with a transverse moving component for driving the turnover bucket 203 to transversely move and a locking component capable of locking a brake hub; the second carriage 201 is also provided with a jacking assembly for driving the lifting frame 202 to lift and a turning assembly for driving the turning bucket 203 to turn. In the work of actually disassembling and assembling the brake hub, the brake hub lifted by the lifting equipment is firstly horizontally placed in the turnover bucket 203 and is locked by the locking component, the turnover bucket 203 is driven by the turnover component to be turned to the upright state of the brake hub, the brake hub is adjusted up and down by the jacking component to be aligned with the center of the airplane wheel shaft, the brake hub is adjusted left and right by the transverse component to be aligned with the center of the airplane wheel shaft, and finally the second frame 201 provided with the steering wheel and the travelling wheel is pushed to enable the brake hub to slowly approach the airplane wheel shaft, so that the brake hub in the turnover bucket 203 can be conveniently installed on the airplane wheel shaft.

Specifically, the vertical spout 211 that is provided with on the backplate of second frame 201 both sides, the slide 221 phase-match that spout 211 and crane 202 both sides set up for crane 202 goes up and down under the direction of spout 211.

The overturning hopper 203 comprises an arc-shaped hopper wall and a semicircular hopper bottom, an arch-shaped aligning port is formed in the center of the hopper bottom, and the lighting lamp tubes 231 are symmetrically arranged on the edges of the two sides of the aligning port, so that the aligning condition can be observed conveniently when the brake hub is disassembled and assembled at night. Two first connecting rods 232 are vertically arranged on the bucket bottom at two sides of the alignment port at intervals, the lower ends of the first connecting rods 232 are fixed on the bucket bottom, and the upper ends of the first connecting rods 232 are rotatably arranged on the overturning shafts 222 at the front ends of the lifting frames 202. In addition, a second connecting rod 233 is transversely arranged on the bucket bottom, and the second connecting rod 233 is used for rotatably connecting the output end of the oil cylinder in the turnover assembly, so that the turnover assembly can drive the turnover bucket 203 to turn over through the oil cylinder.

As shown in fig. 11, the traverse assembly includes a traverse screw 241 and a slide 242; the traversing screw rod 241 and the turning shaft 222 are transversely arranged on the lifting frame 202 at intervals, and one end of the traversing screw rod 241 is connected with a traversing hand wheel 243; the slide seat 242 is sleeved on the traverse screw 241 and the turning shaft 222 in a sliding manner, an internal thread is arranged at one end of the slide seat 242 connected with the traverse screw 241 and matched with an external thread on the traverse screw 241, so that the slide seat 242 moves left and right on the lifting frame 202 when the traverse hand wheel 243 is rotated, and the first connecting rod 232 is pushed when the slide seat 242 moves left and right, so that the turning hopper 203 also moves along with the slide seat 242.

The locking assembly, which is fixedly mounted on the slide 242, includes a locking drum 251, a locking rope wound inside the locking drum 251, and an outer end of the locking rope connected to a locking hook 252, wherein the locking hook 252 can hook the outer edge of the brake hub. The locking spool 251 is driven by a rebound spring so that the locking cord can maintain a certain rebound force after being pulled out of the locking spool 251. When the brake hub in the turning bucket 203 turns over along with the turning bucket 203, the brake hub gradually changes from a flat state to a vertical state, and in the process, the locking hook 252 hooks the outer edge of the brake hub, so that the brake hub cannot fall off from the turning bucket 203 in a turning way, and some accidents are avoided. Further, a reset button is disposed on the housing of the locking drum 251, and the locking rope can be retracted into the locking drum 251 after the reset button is pressed.

The jacking component comprises a jack 261 installed on the second frame 201, the top of the jack 261 props the lifting frame 202, the jack 261 is driven by a jacking screw 262, the jacking screw 262 is rotatably installed on the second frame 201 through a sleeve, and a jacking hand wheel 263 is installed at the tail end of the jacking screw 262. The lifting hand wheel 263 is rotated to drive the jack 261 to lift, the jack 261 drives the lifting frame 202, and the lifting frame 202 drives the turnover bucket 203, so that the height of a brake hub in the turnover bucket 203 can be adjusted up and down, and the brake hub is conveniently aligned with the center of an airplane wheel shaft.

As shown in fig. 12 and 13, the tilting assembly includes a cylinder 271 fixed to the second frame 201, an oil pump 272, an oil tank 273, an accumulator 274, a first oil valve 275, a second oil valve 276, and a plurality of oil pipes 277. The output end of the oil cylinder 271 is sleeved on the second connecting rod 233 at the bottom of the turnover bucket 203, and the output end of the oil cylinder 271 drives the turnover bucket 203 to turn over by taking the turnover shaft 222 as an axis when stretching. The first oil valve 275 and the second oil valve 276 are all three-way control valves. The first oil valve 275 is respectively connected with an oil tank 273, a first oil inlet of the oil cylinder positioned at the rear side of the piston and a first oil inlet of the oil pump through an oil pipe 277; the second oil valve 276 is connected to the accumulator 274, the second oil inlet of the oil cylinder located at the front side of the piston, and the second oil inlet of the oil pump through an oil pipe 277. In addition, a hand lever 278 is provided on the oil pump 272.

The working principle of the turnover assembly is as follows:

step a, firstly storing energy when the energy storage device is used for the first time: the oil circuit of the first oil inlet of the connecting oil cylinder on the first oil valve 275 is closed, all the oil circuits of the second oil valve 276 are opened, the hand-operated control rod 278 on the oil pump 272 is shaken, and the hydraulic oil in the oil tank 273 flows through the oil circuits: an oil tank 273- > a first oil valve 275- > an oil pump 272- > a second oil valve 276- > simultaneously enters an accumulator 274 and the front side of a piston of an oil cylinder 271; at this time, the accumulator 274 and the front side of the piston of the oil cylinder 271 store the oil-gas mixture and are in an energy storage state;

step b, energy storage and keeping state: closing an oil path of the second oil valve 276 communicated with the oil pump 272, and when the oil-gas mixture is consumed and the pressure is reduced after long-term use, performing the oil filling and energy storage operation in the step a again;

step c, daily use output (second oil valve 276 in closed state): semi-closed first oil valve 275 makes the oil circuit of first oil valve 275 and the first oil inlet of hydro-cylinder be in one-way connected state, shakes hand control lever 278 on the oil pump 272, and the hydraulic oil in the oil tank 273 flows through the oil circuit: the oil tank 273- > the first oil valve 275- > the first oil inlet of the oil cylinder- > the rear side of the piston of the oil cylinder 271; at the moment, the oil cylinder piston is pushed forward by hydraulic oil, the oil-gas mixture in the pressure accumulator 274 is compressed and accumulated, and the output end of the oil cylinder 271 extends out and jacks up the overturning hopper 203 to overturn upwards;

step d, daily use retraction (second oil valve 276 in closed state): open first oil valve 275, make first oil valve 275 and the oil circuit of the first oil inlet of hydro-cylinder be in two-way connected state, accumulator 274 pressure release this moment, hydro-cylinder 271 piston is promoted backward, the hydraulic oil refluence of the piston rear side of hydro-cylinder 271, the oil circuit of flowing through: the rear side of a piston of the oil cylinder 271 is- > a first oil inlet of the oil cylinder- > a first oil valve 275- > an oil tank 273; at this time, the output end of the oil cylinder 271 retracts, and the overturning bucket 203 resets and overturns downwards.

The supporting mechanism 200 is provided with a transverse moving component for driving the turning bucket 203 to transversely move, a locking component capable of locking a brake hub of the turning bucket 203, a jacking component for driving the lifting frame 202 to ascend and descend and a turning component for driving the turning bucket 203 to turn on the second frame 201, and the brake hubs in the turning bucket 203 are adjusted in vertical, left and right and turning postures through the transverse moving hand wheel 243, the jacking hand wheel 263 and the hand-operated control rod 278, so that the brake drums and the airplane wheel shafts are accurately aligned, the structure is stable, reliable and safe, and the dismounting efficiency of the airplane brake hubs can be effectively improved.

The alignment mechanism 300 comprises a first aiming module and a second aiming module; the first aiming module comprises a first aiming device 301 arranged on the counterweight block, a first target 302 arranged on the lifting frame and a second target 303 arranged on the handrail of the second carriage 201; the second aiming module comprises a second aiming device 304 arranged on the second frame 201, a third target 305 arranged on the overturning bucket 203 and positioned at the rear side of the bucket bottom, and a fourth target (not shown) arranged at the axle center of the airplane wheel axle.

The first aiming module is used for aligning the brake hub with the turnover bucket 203 in the process of hoisting the brake hub; if the first sighting device 301 is turned on, the laser beam passes through the target center of the first target 302 and irradiates the second target 303, which indicates that the first frame 101 is aligned with the second frame 201, the brake hub on the hoisting assembly on the first frame 101 is successfully aligned with the turning bucket 203 on the second frame 201, and the brake hub can be accurately placed in the turning bucket 203 without scratching the brake hub due to alignment deviation.

The second aiming module is used for aligning the brake hub with the airplane wheel shaft in the process of mounting the brake hub on the airplane wheel shaft; if the laser beam passes through the target center of the third target 305 and irradiates on the fourth target after the second sighting device 304 is opened, the alignment of the brake hub in the overturning bucket 203 on the second frame 201 and the airplane wheel shaft is successful, and the brake hub is gradually close to and sleeved in the airplane wheel shaft by horizontally moving the second frame 201, so that the brake drum can be accurately installed on the airplane wheel shaft.

Preferably, in this embodiment, the first sight 301 and the second sight 304 emit visible light beams that do not harm human eyes; the fourth target is magnetic and can be adsorbed on the axle center of the airplane wheel axle.

Compared with the prior art, the invention has the beneficial effects that: the combined tool comprises the hoisting mechanism, the supporting mechanism and the aligning mechanism, so that the brake hub can be accurately aligned in the process of hoisting the brake hub into the overturning bucket, and the brake hub can also be accurately aligned in the process of installing the brake hub on the airplane wheel shaft, and the disassembly and assembly efficiency of the brake hub is effectively improved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a combination tool that supplementary dismouting aircraft brake hub was used, includes that one lifts by crane mechanism, a supporting mechanism and one distributes and sets up the counterpoint mechanism on lifting by crane mechanism and supporting mechanism, its characterized in that:

the lifting mechanism comprises a hand-operated lifting assembly;

the supporting mechanism comprises a second frame and a lifting frame arranged on the second frame, and a turning hopper is rotatably arranged on the lifting frame; sliding grooves are vertically formed in the guard plates on the two sides of the second frame and are matched with the sliding plates arranged on the two sides of the lifting frame; the lifting frame is also provided with a hand-operated transverse moving assembly for driving the turnover bucket to transversely move and a locking assembly capable of locking a brake hub in the turnover bucket; the second frame is also provided with a jacking assembly for driving the lifting frame to lift and a turning assembly for driving the turning hopper to turn;

the transverse moving assembly comprises a transverse moving screw rod and a sliding seat; the transverse screw and the turning shaft are arranged on the lifting frame in parallel at intervals, and one end of the transverse screw is connected with a transverse hand wheel; the sliding seat is sleeved on the transverse moving screw rod and the turnover shaft in a sliding mode, and an internal thread is arranged at one end, connected with the transverse moving screw rod, of the sliding seat and matched with an external thread on the transverse moving screw rod;

the overturning assembly comprises an oil cylinder, an oil pump, an oil tank, a pressure accumulator, a first oil valve, a second oil valve and a plurality of oil pipes, wherein the oil cylinder, the oil pump, the oil tank, the pressure accumulator, the first oil valve and the second oil valve are fixedly arranged on the second frame; the first oil valve is respectively connected with an oil tank, a first oil inlet of the oil cylinder positioned at the rear side of the piston and a first oil inlet of the oil pump through oil pipes; the second oil valve is respectively connected with the pressure accumulator, a second oil inlet of the oil cylinder positioned on the front side of the piston and a second oil inlet of the oil pump through oil pipes; the output end of the oil cylinder is sleeved on the second connecting rod of the turnover hopper;

2. The combination tool for assisting in disassembling and assembling an aircraft brake hub according to claim 1, wherein: the lifting mechanism comprises a first frame, a lifting assembly and a telescopic cantilever assembly, wherein the lifting assembly and the telescopic cantilever assembly are installed on the first frame, and the telescopic cantilever assembly is fixed through a cantilever support.

3. The combination tool for assisting in disassembling and assembling an aircraft brake hub according to claim 2, wherein: the hoist and mount subassembly includes:

4. The combination tool for assisting in disassembling and assembling an aircraft brake hub according to claim 3, wherein: reinforcing ribs are connected between the cantilever sleeve and the cantilever support, so that the cantilever sleeve in the horizontal direction, the cantilever support in the vertical direction and the oblique reinforcing ribs are connected into a stable triangular structure; the telescopic boom assembly is wholly inclined upwards by 15 degrees.

5. The combination tool for assisting in disassembling and assembling an aircraft brake hub according to claim 4, wherein: a counterweight block is also arranged at the position above the lifting hook on the steel cable; the hoisting assembly is fixed to the front portion of the first frame through the hoisting assembly support, and the hoisting assembly support is connected with the first frame and the cantilever support at the same time.

6. The combination tool for assisting in disassembling and assembling an aircraft brake hub as claimed in claim 5, wherein: the turnover hopper comprises an arc-shaped hopper wall and a semicircular hopper bottom, first connecting rods are vertically arranged on the hopper bottom at intervals, the lower ends of the first connecting rods are fixed on the hopper bottom, and the upper ends of the first connecting rods are rotatably arranged on a turnover shaft at the front end of the lifting frame; and a second connecting rod is transversely arranged on the bucket bottom and is rotatably connected with the output end of an oil cylinder in the turnover assembly.

7. The combination tool for assisting in disassembling and assembling an aircraft brake hub according to claim 6, wherein: an arched aligning opening is formed in the center of the circle of the bucket bottom, and lighting lamp tubes are symmetrically arranged on the edges of two sides of the aligning opening.

8. The combination tool for assisting in disassembling and assembling an aircraft brake hub according to claim 7, wherein: the first oil valve and the second oil valve are both three-way control valves; a hand-operated control rod is arranged on the oil pump; and the jacking screw rod is rotatably arranged on the second frame through a sleeve.