A civil aircraft integrated maintenance platform

Abstract

The invention discloses a civil aircraft integrated maintenance platform, and relates to the technical field of lifting maintenance platforms. The integrated maintenance platform comprises a supporting device, a lifting device, an offset device and an extension plate. The supporting device is movably connected to the lifting device, the offset device is firmly connected to the supporting device, the offset device is hinged to the lifting device, two extension plates are provided, the two extension plates are movably connected to the supporting device, the offset device is connected to the extension plate, the supporting device is used as a main installation base for fixing other devices, the lifting device is used for lifting the working platform, and is convenient for repairing different height positions of the civil aircraft. The extension plate is driven to move by the offset device, so as to expand the working platform and improve the scope of application. The offset device can also monitor the movement of the staff above the working platform, so as to automatically adjust the center of gravity, and prevent the whole machine from tilting, which affects the operation safety.

Description

Technical Field

[0001] The invention relates to the technical field of lifting maintenance platforms, in particular to a comprehensive maintenance platform for civil aircraft. Background Art

[0002] Aircraft are generally used for flying within the atmosphere. Compared with mechanical equipment with transmission, aircraft are mostly used for cargo, passenger transportation, aerial operations, etc., so they are relatively large in size. In order to ensure their safety, they even need to be inspected before flight.

[0003] During normal aircraft maintenance, operators need to be sent to a designated height via a maintenance platform and then perform operations. However, in order to perform maintenance on a large maintenance area, the maintenance platform needs to be moved, or the operator needs to walk on the surface of the maintenance platform, which can easily cause the center of gravity to change, thus affecting the safety of the operation. The conventional method of adding counterweights can easily increase the curb weight and reduce the convenience of movement.

[0004] In addition, currently conventional maintenance platforms are mostly raised and lowered in a unilaterally fixed manner. During the lifting process, the supporting portion is prone to unilateral deviation, which can easily cause shaking, reduce the supporting area, and affect the stability of the support. Summary of the invention

[0005] The purpose of the present invention is to provide a civil aircraft integrated maintenance platform to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A civil aircraft integrated maintenance platform comprises a supporting device, a lifting device, an offset device and an extension plate. The supporting device and the lifting device are movably connected, the offset device and the supporting device are firmly connected, the offset device and the lifting device are hinged, two extension plates are provided, the two extension plates are movably connected to the supporting device, and the offset device is connected to the extension plate.

[0008] The supporting device serves as the main installation basis and is used to fix other devices. The lifting device is used to lift the working platform to facilitate maintenance of civil aircraft at different heights. The offset device drives the extension plate to move, thereby expanding the working platform and improving the scope of application. The offset device can also monitor the movement of staff above the working platform, thereby automatically adjusting the center of gravity to prevent the entire machine from tilting and affecting operational safety.

[0009] Furthermore, the supporting device includes a bottom plate and a top plate, a lifting device is provided between the bottom plate and the top plate, the lifting device includes a driving motor and a lifting frame, two lifting frames are provided on both sides of the upper end of the bottom plate, the lifting frame includes a plurality of inner plates and outer plates, the plurality of inner plates and outer plates are arranged along the vertical space, the inner plates and adjacent outer plates are hinged, the lower end of the lowest inner plate is slidably connected to the bottom plate, the lowest outer plate is rotatably connected to the bottom plate, the uppermost inner plate is connected to the top plate through an offset device, and the uppermost outer plate is connected to the extension plate through an offset device;

[0010] A transmission rod is provided between the two inner plates on the same side of the bottom plate, the transmission rod and the adjacent inner plate are hinged, an anti-rotation frame is provided on the drive motor, a card slot is provided on the anti-rotation frame, the transmission rod is inserted into the card slot of the anti-rotation frame, the transmission rod and the card slot are slidably connected, a transmission groove is provided on the transmission rod, the transmission groove is a spiral groove, a lead screw is provided at the output end of the drive motor, a bidirectional thread is provided on the lead screw, the bidirectional thread sections of the lead screw are respectively placed in the two transmission grooves, and the lead screw is respectively threadedly connected to the two transmission grooves.

[0011] In order to improve the ease of use of the entire machine, a driving roller and a lifting leg can be provided at the lower end of the base plate to facilitate mode switching. The base plate is used to support the lifting device, and the lifting device drives the top plate to rise and move it to the part of the civil aircraft to be maintained. At the same time, the offset device is used to assist in lifting. The base plate is provided with two lifting frames on both sides, so as to perform four-point support. The lifting frames are designed in the form of inner and outer plates hinged to each other. The two inner plates on the same side of the base plate are connected by a transmission rod, and the driving motor is inserted into the transmission rod through an anti-rotation frame. The driving motor is prevented from rotating by the transmission rod. When working, the driving motor outputs torque to drive the lead screw to rotate. Two sections of threads are provided on the lead screw, and the threads at both ends are in opposite directions and are connected to the transmission groove on the transmission rod. When the lead screw rotates, the distance between the two transmission rods is adjusted by the two opposite threads. The inner and outer panels at the same height are hinged in the middle, and those at different heights are hinged through the upper and lower ends, and the outer panel at the lowest level is hinged to the bottom panel. The inner and bottom panels at the lowest level keep sliding, so that the bottom panel is supported on both sides, and the moving end is the inner panel at the lowest level, so as to avoid the center of gravity shift during the lifting process, thereby improving the support stability. When the distance between the two transmission rods changes, the inner panel is driven to rotate, thereby driving the outer panel to rotate. When the inner and outer panels rotate at the same time, the top panel is driven to move in the vertical direction.

[0012] Furthermore, the offset device includes a compensation component, which includes a limit plate and a compensation cylinder. Two limit plates are respectively provided on both sides of the lower end of the top plate. The limit plate is rotatably connected to the adjacent inner plate of the top layer. A compensation cylinder is provided on the inner side of the top outer plate. The compensation cylinder is rotatably connected to the adjacent outer plate. The output end of the compensation cylinder is movably connected to the extension plate. Slide grooves are respectively provided on both sides of the top plate, and the extension plate and the slide grooves are slidably connected.

[0013] The compensation component is set to automatically compensate for the center of gravity offset of the upper end of the top plate. The uppermost inner plate and the limit plate keep rotating. The limit plate is fixed on the top plate and is the inner support point. The inner support point keeps a fixed position. The uppermost outer plate is connected to the extension plate through the compensation cylinder. The extension plate can slide along the slide groove. The connection position of the compensation cylinder and the extension plate is the outer support point. The outer support point is in an adjustable state. The extension plate can be driven to slide along the slide groove through the extension and contraction of the compensation cylinder. When the staff moves to one side along the top plate, the overall center of gravity of the top plate and the staff is offset, that is, the active center of gravity is unilaterally offset. Since the positions of the two inner support points remain unchanged, the outer support point far away from the staff remains unchanged at this time, and the compensation cylinder close to the staff outputs displacement, that is, the proximal extension plate slides outward, and the lever arm is compensated for the proximal outer support point until the total torque from the proximal inner and outer support points to the active center of gravity is equal to the total torque from the distal inner and outer support points to the active center of gravity, so that the forces at both ends of the top plate are balanced and the stability is improved.

[0014] Furthermore, a compensation seat is provided on the inner side of the limit plate, a pin is provided on one side of the output end of the compensation cylinder, the pin is sleeved on the compensation cylinder, the pin and the output end of the compensation cylinder are slidably connected, a compensation groove is provided on the compensation seat, the pin is inserted into the compensation groove, and the pin and the compensation groove are slidably connected. Compensation seats are provided on the inner side of the limit plate, the compensation cylinder is inserted into the compensation groove through the pin, and the outer circle of the pin abuts against the wall of the compensation groove, thereby transmitting force, so that the inner plate and the outer plate share the force.

[0015] When adjusting the height, the outer side of the inner plate and the outer plate only move vertically without lateral displacement, while the inner side of the inner plate and the outer plate also move horizontally while producing vertical displacement, that is, the inner plate and the outer plate rotate and move with the center of the outer side, and the uppermost outer plate rotates at an angle. When the two ends of the compensation cylinder are hinged, the outer plate is driven to extend directly outward through the compensation cylinder, and the pin slides in the compensation groove to prevent motion interference; the drive motor and the compensation cylinder are linked and controlled. When the drive motor is driven, the compensation cylinder extends and displaces at the same time, actively driving the outer plate to extend outward. The torque output by the drive motor is positively correlated with the output displacement of the compensation cylinder, that is, the more the output torque, the more the output displacement. Through active control, the pin slides in the compensation groove to prevent motion interference. When compensating, since the inner plate and the outer plate remain unchanged at this time, the compensation cylinder outputs displacement, and within a certain height, the compensation cylinder is driven to produce an angle deflection. The rotation center is the hinge center of the compensation cylinder and the uppermost outer plate, thereby driving the pin to slide along the compensation groove.

[0016] Furthermore, the offset device also includes a piezoelectric sheet, an adjusting power supply and a rotating shaft. A rotating shaft is provided at the lower end of the epitaxial plate. The compensation cylinder is connected to the epitaxial plate through the rotating shaft. A limit groove is provided at the output end of the compensation cylinder. The rotating shaft passes through the two limit grooves in sequence. A piezoelectric groove is provided on the epitaxial plate. The piezoelectric sheet is placed in the piezoelectric groove. The adjusting power supply and the epitaxial plate are tightly connected. The two wiring terminals of the adjusting power supply are respectively electrically connected to the two ends of the piezoelectric sheet to form a voltage detection circuit. The upper end of the output end of the compensation cylinder is in contact with the piezoelectric sheet.

[0017] The extension plate is used to install the regulating power supply, and the piezoelectric piece is installed through the piezoelectric groove. The piezoelectric piece is made of a dielectric material with piezoelectric effect and is located at the external support point. A rotating shaft is set at the lower end of the extension plate and inserted into the limit grooves of the compensation cylinders at both ends. The compensation cylinder can drive the rotating shaft to move laterally through the limit grooves. The upper end of the output end of the compensation cylinder abuts on the piezoelectric piece to facilitate pressure detection. When the center of gravity of the activity shifts, the pressure on the piezoelectric piece at the proximal end increases, and the amount of charge generated on the surface increases, which increases the current value of the voltage detection circuit. By comparing the current of the voltage detection circuit, the offset direction of the center of gravity is automatically monitored.

[0018] Further, the compensating cylinder is electrically connected to the pressure detection circuit.

[0019] According to the current value compared with the voltage detection circuit, the compensation cylinder close to the circuit with increased current is controlled to move and extend, thereby automatically performing center balancing.

[0020] As an optimization, the diameter of the limit groove is 1-2 mm larger than the diameter of the rotating shaft. By setting the size difference, the piezoelectric sheet always contacts the output end of the compensation cylinder under the action of gravity at the outer support point, thereby improving the accuracy of center of gravity detection.

[0021] As an optimization, the compensation groove is arranged in an arc shape. By the arc shape, when the column pin rotates at the hinge center of the compensation cylinder and the outer plate at the top, there will be no motion interference, which is convenient for center of gravity compensation.

[0022] As an optimization, the hinge point between the bottom outer plate and the bottom plate is located at the outer edge of the bottom plate. By making the four hinge points located at the edge of the bottom plate, the support plane formed by connecting the four support points in sequence is maximized, thereby improving the support stability.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the bottom plate is supported by four points by respectively arranging two lifting frames on both sides, and the four hinge points are respectively located at the positions of the edges of the bottom plate, so that the support plane formed by the four support points in sequence is maximized, thereby improving the support stability; the bottom outer plate and the bottom plate are hinged, and the bottom inner plate and the bottom plate keep sliding, so that the bottom plate is supported on both sides, and the moving end is the bottom inner plate, so as to avoid the center of gravity shift caused by the lifting process, thereby improving the support stability; the limit plate is fixedly connected to the top plate, which is the inner support point, and the inner support point keeps a fixed position, and the connection position of the compensation cylinder and the extension plate is the outer support point. When the staff moves to one side along the top plate, the overall center of gravity of the top plate and the staff shifts, that is, the active center of gravity shifts to one side. Since the positions of the two inner support points remain unchanged, the outer support point far away from the staff remains unchanged at this time, and the compensation cylinder output displacement close to the staff, that is, the proximal extension The plate slides outward, and the lever arm is compensated for the outer support point at the proximal end until the total torque from the inner and outer support points at the proximal end to the active center of gravity is equal to the total torque from the inner and outer support points at the distal end to the active center of gravity, so that the forces at both ends of the top plate are balanced and the stability is improved; when adjusting the height, the driving motor and the compensation cylinder are linked and controlled. When the driving motor is driven, the compensation cylinder is extended and displaced at the same time, actively driving the extension plate to extend outward, and the torque output by the driving motor is positively correlated with the output displacement of the compensation cylinder, that is, the more the output torque, the greater the output displacement. Through active control, the pin slides in the compensation groove to prevent motion interference; the upper end of the output end of the compensation cylinder abuts against the piezoelectric sheet for easy pressure detection. When the active center of gravity shifts, the pressure on the piezoelectric sheet at the proximal end increases, and the amount of charge generated on the surface increases, which increases the current value of the voltage detection circuit. By comparing the current of the voltage detection circuit, the offset direction of the center of gravity is automatically monitored. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the offset device of the present invention;

[0026] Figure 3 for Figure 2 PP section view of the view;

[0027] Figure 4 This is a schematic diagram of the power transmission for adjusting the center of gravity of the present invention;

[0028] Figure 5 for Figure 4 A magnified view of a part of the view;

[0029] Figure 6 for Figure 4 Enlarged view of detail B of the view.

[0030] In the figure: 1. supporting device; 11. bottom plate; 12. top plate; 121. slide groove; 2. lifting device; 21. driving motor; 22. lead screw; 23. transmission rod; 24. lifting frame; 241. inner plate; 242. outer plate; 25. anti-rotation frame; 3. offset device; 31. compensation component; 311. limit plate; 312. compensation seat; 3121. compensation groove; 313. compensation cylinder; 3131. limit groove; 314. pin; 32. piezoelectric sheet; 33. regulating power supply; 34. rotating shaft; 4. extension plate; 41. piezoelectric groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Figure 1-Figure 6 As shown, the present invention provides a technical solution for a comprehensive maintenance platform for civil aircraft.

[0033] A civil aircraft integrated maintenance platform, the integrated maintenance platform comprises a supporting device 1, a lifting device 2, a shifting device 3 and an extension plate 4, the supporting device 1 and the lifting device 2 are movably connected, the shifting device 3 and the supporting device 1 are firmly connected, the shifting device 3 and the lifting device 2 are hinged, two extension plates 4 are provided, the two extension plates 4 are movably connected to the supporting device 1, and the shifting device 3 and the extension plate 4 are connected.

[0034] The support device 1 serves as the main installation basis for fixing other devices. The lifting device 2 is used to lift the working platform to facilitate maintenance of civil aircraft at different heights. The extension plate 4 is driven to move by the offset device 3, thereby expanding the working platform and improving the scope of application. The offset device 3 can also monitor the movement of the staff above the working platform, thereby automatically adjusting the center of gravity to prevent the entire machine from tilting and affecting the operational safety.

[0035] Further, the support device 1 includes a bottom plate 11 and a top plate 12, a lifting device 2 is provided between the bottom plate 11 and the top plate 12, the lifting device 2 includes a driving motor 21 and a lifting frame 24, two lifting frames 24 are provided on both sides of the upper end of the bottom plate 11, the lifting frame 24 includes a plurality of inner plates 241 and outer plates 242, the plurality of inner plates 241 and outer plates 242 are arranged along the vertical space, the inner plates 241 and the adjacent outer plates 242 are hinged, the lower end of the lowest inner plate 241 is slidably connected to the bottom plate 11, the lowest outer plate 242 is rotatably connected to the bottom plate 11, the uppermost inner plate 241 is connected to the top plate 12 via the offset device 3, and the uppermost outer plate 242 is connected to the extension plate 4 via the offset device 3;

[0036] A transmission rod 23 is provided between the two inner plates 241 on the same side of the base plate 11, and the transmission rod 23 is hinged to the adjacent inner plate 241. An anti-rotation frame 25 is provided on the drive motor 21, and a card slot is provided on the anti-rotation frame 25. The transmission rod 23 is inserted into the card slot of the anti-rotation frame 25, and the transmission rod 23 and the card slot are slidably connected. A transmission groove is provided on the transmission rod 23, and the transmission groove is a spiral groove. A lead screw 22 is provided at the output end of the drive motor 21, and a bidirectional thread is provided on the lead screw 22. The bidirectional thread sections of the lead screw 22 are respectively placed in the two transmission grooves, and the lead screw 22 is respectively threadedly connected to the two transmission grooves.

[0037] In order to improve the convenience of use of the whole machine, a driving roller and a lifting leg can be set at the lower end of the bottom plate 11 to facilitate mode switching. The bottom plate 11 is used to support the lifting device 2, and the top plate 12 is driven to rise through the lifting device 2 and moved to the part of the civil aircraft to be repaired. At the same time, auxiliary lifting is performed through the offset device 3. The bottom plate 11 is provided with two lifting frames 24 on both sides, so as to perform four-point support. The lifting frames 24 are designed in the form of an inner plate 241 and an outer plate 242 hinged to each other. The two inner plates 241 on the same side of the bottom plate 11 are connected by a transmission rod 23. The driving motor 21 is inserted into the transmission rod 23 through an anti-rotation frame 25, and the driving motor 21 is prevented from rotating by the transmission rod 23. When working, the driving motor 21 outputs torque to drive the lead screw 22 to rotate. Two sections of threads are provided on the lead screw 22, and the threads at both ends are in opposite directions and are connected to the transmission groove on the transmission rod 23. When the lead screw 22 rotates, the distance between the two transmission rods 23 is adjusted by the two opposite threads. The inner plate 241 and the outer plate 242 at the same floor height are hinged in the middle section, and those at different floor heights are hinged through the upper and lower ends, and the outer plate 242 at the lowest level is hinged to the bottom plate 11. The inner plate 241 and the bottom plate 11 at the lowest level keep sliding, so that the bottom plate 11 is supported on both sides, and the moving end is the inner plate 241 at the lowest level, so as to avoid the center of gravity shift caused by the lifting process, thereby improving the support stability. When the distance between the two transmission rods 23 changes, the inner plate 241 is driven to rotate, thereby driving the outer plate 242 to rotate. When the inner plate 241 and the outer plate 242 rotate at the same time, the top plate 12 is driven to move in the vertical direction.

[0038] Furthermore, the offset device 3 includes a compensation component 31, which includes a limit plate 311 and a compensation cylinder 313. Two limit plates 311 are respectively provided on both sides of the lower end of the top plate 12. The limit plate 311 is rotatably connected to the uppermost adjacent inner plate 241. A compensation cylinder 313 is provided on the inner side of the uppermost outer plate 242. The compensation cylinder 313 is rotatably connected to the adjacent outer plate 242. The output end of the compensation cylinder 313 is movably connected to the extension plate 4. Slide grooves 121 are respectively provided on both sides of the top plate 12. The extension plate 4 and the slide groove 121 are slidably connected.

[0039] The compensation component 31 is provided to automatically compensate for the center of gravity deviation of the upper end of the top plate 12. The uppermost inner plate 241 and the limit plate 311 keep rotating. The limit plate 311 is fixed to the top plate 12 and is an inner support point. The inner support point keeps a fixed position. The uppermost outer plate 242 is connected to the extension plate 4 through the compensation cylinder 313. The extension plate 4 can slide along the slide groove 121. The connection position between the compensation cylinder 313 and the extension plate 4 is the outer support point. The outer support point is in an adjustable state. The extension plate 4 can slide along the slide groove 121 by extending and retracting the compensation cylinder 313. When the staff moves to one side along the top plate 12, the overall center of gravity of the top plate 12 and the staff shifts, that is, the active center of gravity shifts unilaterally. Since the positions of the two inner support points remain unchanged, the outer support point far away from the staff remains unchanged at this time, and the compensation cylinder 313 close to the staff outputs displacement, that is, the proximal extension plate 4 slides outward, and the lever arm is compensated for the proximal outer support point until the total torque from the proximal inner and outer support points to the active center of gravity is equal to the total torque from the distal inner and outer support points to the active center of gravity, so that the forces at both ends of the top plate 12 are balanced, thereby improving stability.

[0040] Furthermore, a compensation seat 312 is provided on the inner side of the limit plate 311, and a pin 314 is provided on one side of the output end of the compensation cylinder 313. The pin 314 is sleeved on the compensation cylinder 313, and the pin 314 and the output end of the compensation cylinder 313 are slidably connected. A compensation groove 3121 is provided on the compensation seat 312, and the pin 314 is inserted into the compensation groove 3121, and the pin 314 and the compensation groove 3121 are slidably connected. The compensation seats 312 are provided on the inner side of the limit plate 311, and the compensation cylinder 313 is inserted into the compensation groove 3121 through the pin 314. The outer circle of the pin 314 abuts against the wall surface of the compensation groove 3121, thereby transmitting force, so that the inner plate 241 and the outer plate 242 share the force.

[0041] When adjusting the height, the outer sides of the inner plate 241 and the outer plate 242 only move vertically without generating lateral displacement, while the inner sides of the inner plate 241 and the outer plate 242 generate lateral displacement while generating vertical displacement, that is, the inner plate 241 and the outer plate 242 rotate and move with the center of the outer side, and the uppermost outer plate 242 generates angular rotation. When the two ends of the compensation cylinder 313 are hinged, the extension plate 4 is driven to extend directly outward by the compensation cylinder 313, and the column pin 314 slides in the compensation groove 3121 to prevent motion interference; the driving motor 21 and the compensation cylinder 313 are linked and controlled. When the driving motor 21 is driven, the compensation cylinder 313 is extended and displaced at the same time, actively driving the extension plate 4 to extend outward. The torque output by the driving motor 21 is positively correlated with the output displacement of the compensation cylinder 313, that is, the more the output torque, the more the output displacement. Through active control, the column pin 314 slides in the compensation groove 3121 to prevent motion interference. When compensation is performed, since the inner plate 241 and the outer plate 242 remain unchanged at this time, the displacement is output by the compensation cylinder 313, which drives the compensation cylinder 313 to produce an angular deflection within a certain height. The rotation center is the hinge center of the compensation cylinder 313 and the uppermost outer plate 242, thereby driving the pin 314 to slide along the compensation groove 3121.

[0042] Furthermore, the offset device 3 also includes a piezoelectric sheet 32, an adjusting power supply 33 and a rotating shaft 34. The lower end of the epitaxial plate 4 is provided with a rotating shaft 34. The compensation cylinder 313 is transmission-connected to the epitaxial plate 4 through the rotating shaft 34. A limiting groove 3131 is provided at the output end of the compensation cylinder 313. The rotating shaft 34 passes through the two limiting grooves 3131 in sequence. A piezoelectric groove 41 is provided on the epitaxial plate 4. The piezoelectric sheet 32 ​​is placed in the piezoelectric groove 41. The adjusting power supply 33 and the epitaxial plate 4 are fastened together. The two wiring terminals of the adjusting power supply 33 are respectively electrically connected to the two ends of the piezoelectric sheet 32 ​​to form a voltage detection circuit. The upper end of the output end of the compensation cylinder 313 abuts against the piezoelectric sheet 32.

[0043] The extension plate 4 is used to install the regulating power supply 33, and the piezoelectric piece 32 is installed through the piezoelectric groove 41. The piezoelectric piece is made of a dielectric material with piezoelectric effect and is located at the external support point. A rotating shaft 34 is set at the lower end of the extension plate 4 and inserted into the limit groove 3131 of the compensation cylinder 313 at both ends. The compensation cylinder 313 can drive the rotating shaft 34 to move laterally through the limit groove 3131. The upper end of the output end of the compensation cylinder 313 abuts on the piezoelectric piece 32, which is convenient for pressure detection. When the center of gravity of the activity shifts, the pressure on the piezoelectric piece at the proximal end increases, and the amount of charge generated on the surface increases, which increases the current value of the voltage detection circuit. By comparing the current of the voltage detection circuit, the offset direction of the center of gravity is automatically monitored.

[0044] Furthermore, the compensation cylinder 313 is electrically connected to the pressure detection circuit.

[0045] According to the current value compared with the voltage detection circuit, the compensation cylinder 313 close to the circuit with increased current is controlled to move and extend, thereby automatically performing center balancing.

[0046] As an optimization, the diameter of the limit groove 3131 is 1-2 mm larger than the diameter of the rotating shaft 34. By setting the size difference, the piezoelectric sheet 32 ​​always abuts against the output end of the compensation cylinder 313 at the outer support point under the action of gravity, thereby improving the center of gravity detection accuracy.

[0047] As an optimization, the compensation groove 3121 is arranged in an arc shape. By the arc shape, when the column pin 314 rotates at the hinge center of the compensation cylinder 313 and the outer plate 242 at the top, no motion interference will occur, which is convenient for center of gravity compensation.

[0048] As an optimization, the hinge point between the bottom outer plate 242 and the bottom plate 11 is located at the outer edge of the bottom plate 11. By making the four hinge points located at the edge of the bottom plate 11, the support plane formed by connecting the four support points in sequence is maximized, thereby improving the support stability.

[0049] The working principle of the present invention is as follows: the bottom plate 11 is supported by four points by arranging two lifting frames 24 on both sides, and the four hinge points are respectively located at the edges of the bottom plate 11, so that the support plane formed by connecting the four support points in sequence is maximized, thereby improving the support stability; the outer plate 242 of the lowest layer is hinged to the bottom plate 11, and the inner plate 241 of the lowest layer and the bottom plate 11 keep sliding, so that the bottom plate 11 is supported on both sides, and the moving end is the inner plate 241 of the lowest layer, so as to avoid the center of gravity shift caused by the lifting process, thereby improving the support stability; the limit plate 311 is fixedly connected to the top plate 12, which is the inner support point, and the inner support point keeps a fixed position. The connection position of the compensation cylinder 313 and the extension plate 4 is the outer support point. When the staff moves to one side along the top plate 12, the overall center of gravity of the top plate 12 and the staff is shifted, that is, the active center of gravity is unilaterally shifted. Since the positions of the two inner support points remain unchanged, the outer support point far away from the staff remains unchanged at this time, and the compensation cylinder 313 close to the staff outputs displacement, that is, the proximal extension plate 4 slides outward, and the force arm is compensated for the outer support point at the proximal end until the total torque from the inner and outer support points at the proximal end to the active center of gravity is equal to the total torque from the inner and outer support points at the distal end to the active center of gravity, so that the forces at both ends of the top plate 12 are balanced, thereby improving stability; when adjusting the height, linkage control is performed through the drive motor 21 and the compensation cylinder 313. When the drive motor 21 is driven, the compensation cylinder 313 is extended and displaced at the same time, actively driving the extension plate 4 to extend outward, and the torque output by the drive motor 21 is positively correlated with the output displacement of the compensation cylinder 313, that is, the more the output torque, the more the output displacement. Through active control, the pin 314 slides in the compensation groove 3121 to prevent motion interference; the upper end of the output end of the compensation cylinder 313 abuts on the piezoelectric sheet 32, which is convenient for pressure detection. When the active center of gravity shifts, the pressure on the piezoelectric sheet at the proximal end increases, and the amount of charge generated on the surface increases, which increases the current value of the voltage detection circuit. By comparing the current of the voltage detection circuit, the offset direction of the center of gravity is automatically monitored.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A civil aircraft integrated maintenance platform, characterized in that: The integrated maintenance platform comprises a support device (1), a lifting device (2), a shifting device (3) and an extension plate (4); the support device (1) and the lifting device (2) are movably connected; the shifting device (3) and the support device (1) are firmly connected; the shifting device (3) and the lifting device (2) are hinged; two extension plates (4) are provided; the two extension plates (4) and the support device (1) are movably connected; and the shifting device (3) and the extension plate (4) are connected; The support device (1) comprises a bottom plate (11) and a top plate (12), a lifting device (2) is provided between the bottom plate (11) and the top plate (12), the lifting device (2) comprises a lifting frame (24), the lifting frame (24) comprises a plurality of inner plates (241) and outer plates (242), the lower end of the bottom inner plate (241) is slidably connected to the bottom plate (11), the bottom outer plate (242) is rotatably connected to the bottom plate (11), the top inner plate (241) is connected to the top plate (12) via a displacement device (3), and the top outer plate (242) is connected to the extension plate (4) via the displacement device (3); The offset device (3) comprises a compensation component (31), the compensation component (31) comprising a limit plate (311) and a compensation cylinder (313), the limit plate (311) and the uppermost adjacent inner plate (241) are rotationally connected, the compensation cylinder (313) and the adjacent outer plate (242) are rotationally connected, the output end of the compensation cylinder (313) and the extension plate (4) are movably connected, and slide grooves (121) are respectively provided on both sides of the top plate (12), and the extension plate (4) and the slide grooves (121) are slidably connected.

2. A civil aircraft integrated maintenance platform according to claim 1, characterized in that: The lifting device (2) further comprises a driving motor (21), two lifting frames (24) are respectively provided on both sides of the upper end of the bottom plate (11), a plurality of inner plates (241) and outer plates (242) are arranged along the vertical space, and the inner plates (241) and adjacent outer plates (242) are hingedly connected; A transmission rod (23) is provided between two inner plates (241) on the same side of the bottom plate (11), the transmission rod (23) and the adjacent inner plate (241) are hinged, an anti-rotation frame (25) is provided on the drive motor (21), a clamping groove is provided on the anti-rotation frame (25), the transmission rod (23) is clamped into the clamping groove of the anti-rotation frame (25), the transmission rod (23) and the clamping groove are slidably connected, a transmission groove is provided on the transmission rod (23), the transmission groove is a spiral groove, a lead screw (22) is provided at the output end of the drive motor (21), the lead screw (22) is provided with a bidirectional thread, the bidirectional thread sections of the lead screw (22) are respectively placed in the two transmission grooves, and the lead screw (22) is respectively threadedly connected to the two transmission grooves.

3. A civil aircraft integrated maintenance platform according to claim 2, characterized in that: Two limit plates (311) are respectively provided on both sides of the lower end of the top plate (12), and a compensation cylinder (313) is provided on the inner side of the uppermost outer plate (242).

4. A civil aircraft integrated maintenance platform according to claim 3, characterized in that: A compensation seat (312) is provided on the inner side of the limit plate (311); a column pin (314) is provided on one side of the output end of the compensation cylinder (313); the column pin (314) is sleeved on the compensation cylinder (313); the column pin (314) and the output end of the compensation cylinder (313) are slidably connected; a compensation groove (3121) is provided on the compensation seat (312); the column pin (314) is inserted into the compensation groove (3121); the column pin (314) and the compensation groove (3121) are slidably connected.

5. The civil aircraft integrated maintenance platform according to claim 4, characterized in that: The offset device (3) further comprises a piezoelectric sheet (32), an adjustable power supply (33) and a rotating shaft (34); the lower end of the extension plate (4) is provided with a rotating shaft (34); the compensation cylinder (313) is connected to the extension plate (4) through the rotating shaft (34); the output end of the compensation cylinder (313) is provided with a limit groove (3131); the rotating shaft (34) passes through two limit grooves (3131) in sequence; the extension plate (4) is provided with a piezoelectric groove (41); the piezoelectric sheet (32) is placed in the piezoelectric groove (41); the adjustable power supply (33) and the extension plate (4) are tightly connected; two wiring terminals of the adjustable power supply (33) are respectively electrically connected to two ends of the piezoelectric sheet (32) to form a voltage detection circuit; the upper end of the output end of the compensation cylinder (313) is in contact with the piezoelectric sheet (32).

6. A civil aircraft integrated maintenance platform according to claim 5, characterized in that: The compensation cylinder (313) is electrically connected to the voltage detection circuit.

7. A civil aircraft integrated maintenance platform according to claim 6, characterized in that: The diameter of the limiting groove (3131) is 1-2 mm larger than the diameter of the rotating shaft (34).

8. The civil aircraft integrated maintenance platform according to claim 7, characterized in that: The compensation groove (3121) is arranged in an arc shape.

9. The civil aircraft integrated maintenance platform according to claim 8, characterized in that: The hinge point between the outer plate (242) at the bottom layer and the bottom plate (11) is located at the outer edge of the bottom plate (11).

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