CN113443593B - Ladder frame for aircraft maintenance - Google Patents
Ladder frame for aircraft maintenance Download PDFInfo
- Publication number
- CN113443593B CN113443593B CN202110747997.7A CN202110747997A CN113443593B CN 113443593 B CN113443593 B CN 113443593B CN 202110747997 A CN202110747997 A CN 202110747997A CN 113443593 B CN113443593 B CN 113443593B
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- supporting
- driving
- bottom plate
- sleeve
- controller
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- 238000012423 maintenance Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 71
- 230000000087 stabilizing effect Effects 0.000 claims description 36
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000008531 maintenance mechanism Effects 0.000 claims description 3
- 230000009193 crawling Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
- Ladders (AREA)
Abstract
The invention discloses a ladder frame for aircraft maintenance, which comprises a working platform, a battery, a control box, a supporting bottom plate, a bottom plate supporting mechanism and a two-stage lifting mechanism. The ladder frame for aircraft maintenance utilizes the swing arm driving mechanism to drive the four anti-tilting swing arms to support and position the supporting bottom plate, supports the edge of the supporting bottom plate during maintenance, improves the stability, and simultaneously supports in multiple directions to prevent toppling; the two-stage lifting mechanism is utilized to realize the multi-stage lifting of the working platform, so that the working platform can reach the position of the aircraft to be overhauled; the fence is used for protecting the safety of maintenance personnel in the air.
Description
Technical Field
The invention relates to a ladder frame, in particular to a ladder frame for aircraft maintenance.
Background
At present, most of existing aircraft overhaul platforms adopt fixed overhaul brackets, and local parts of the aircraft are detected on the overhaul brackets manually, so that the positions of the aircraft overhaul platforms are relatively fixed in one detection. Because the area of the aircraft wing is larger and the model is different, the mode efficiency of the fixed overhaul support is lower, and the existing overhaul requirement is difficult to meet.
Disclosure of Invention
The invention aims to: a ladder frame for aircraft maintenance is provided, which can move and lift according to the position on the aircraft wing to be overhauled.
The technical scheme is as follows: the invention provides a ladder frame for aircraft maintenance, which comprises a working platform, a battery, a control box, a supporting bottom plate, a bottom plate supporting mechanism and a two-stage lifting mechanism, wherein the working platform is arranged on the working platform;
the bottom plate supporting mechanism is arranged on the supporting bottom plate and consists of a swing arm driving mechanism and four anti-tilting swing arms, and the swing arm driving mechanism drives the four anti-tilting swing arms to swing up and down, so that the supporting and positioning of the supporting bottom plate are realized; the two-stage lifting mechanism is arranged on the supporting bottom plate, the working platform is arranged on the two-stage lifting mechanism, and the height position of the working platform is adjusted by the two-stage lifting mechanism; the surrounding edges of the working platform are provided with fences; the control box is arranged on the fence at one side; a key keyboard is arranged on the control box; the battery is arranged on the supporting bottom plate;
a controller and a power module are arranged in the control box; the bottom plate supporting mechanism and the two-stage lifting mechanism are driven by a controller; the battery supplies power to the controller, the bottom plate supporting mechanism and the two-stage lifting mechanism through the power supply module.
Furthermore, a cat ladder is arranged on the fence at one side; and an inclined stay bar is supported between the working platform and the crawling ladder.
Furthermore, universal wheels are arranged at two vertex angles on the same side edge of the lower side surface of the supporting bottom plate, and electric rollers are arranged at the other two vertex angles;
a roller driving circuit electrically connected with the controller is arranged in the control box; the roller driving circuit is electrically connected with the two electric rollers, and the controller coordinates and controls the two electric rollers through the roller driving circuit; the key keyboard is provided with a forward key, a backward key, a left turning key and a right turning key which are electrically connected with the controller.
Further, the two-stage lifting mechanism consists of a first-stage lifting mechanism and a second-stage lifting mechanism; the primary lifting mechanism comprises a U-shaped bracket, a primary lifting driving motor, a middle-layer internal thread pipe sleeve and a primary driving screw;
the upper edges of the two vertical plates of the U-shaped bracket are fixed at the center of the lower side surface of the working platform; the primary lifting driving motor is arranged in the U-shaped bracket, and the end part of an output shaft of the primary lifting driving motor downwards penetrates through the lower side plate of the U-shaped bracket; the upper end of the middle-layer internal thread pipe sleeve is closed; a driving threaded hole is formed in the closed end of the middle-layer internal thread pipe sleeve; the primary driving screw rod is coaxially fixed on the penetrating end of the output shaft of the primary lifting driving motor, and the primary driving screw rod is screwed on the driving threaded hole; the middle-layer internal thread pipe sleeve is arranged on the secondary lifting mechanism;
a first-stage lifting driving circuit which is electrically connected with the controller is arranged in the control box; the controller drives the primary lifting driving motor to rotate through the primary lifting driving circuit; the key keyboard is provided with a first-level rising key and a first-level falling key which are electrically connected with the controller.
Further, the secondary lifting mechanism comprises an outer pipe sleeve, an inner driving pipe sleeve and a secondary lifting driving motor;
the lower end of the outer layer pipe sleeve is fixed at the center of the upper side surface of the supporting bottom plate; the second-stage lifting driving motor is arranged on the upper side surface of the supporting bottom plate and is positioned in the outer layer pipe sleeve; the lower end of the inner layer driving pipe sleeve is closed; the output shaft of the secondary lifting driving motor is vertically upwards, and the end part of the output shaft is coaxially fixed on the closed end of the inner layer driving pipe sleeve; threads are arranged on the outer pipe wall of the inner driving pipe sleeve; the middle-layer inner thread pipe sleeve is screwed on the inner-layer driving pipe sleeve;
a secondary lifting driving circuit electrically connected with the controller is arranged in the control box; the controller drives the secondary lifting driving motor to rotate through the secondary lifting driving circuit; the key keyboard is provided with a secondary ascending key and a secondary descending key which are electrically connected with the controller.
Further, a maintenance mechanism is arranged on the working platform; the dimension stabilizing mechanism comprises two dimension stabilizing sleeves, two dimension stabilizing rods and two end pipes;
a middle layer plate is fixed at the upper end of the outer layer pipe sleeve; the upper ends of the two dimensional stability sleeves are fixed on the lower side surface of the working platform; two dimensionally stable sleeve holes are formed in the middle layer plate; the lower ends of the two dimension stabilizing sleeves respectively penetrate through two dimension stabilizing sleeve holes;
the upper ends of the two dimensional stabilizing rods are respectively inserted into the penetrating ends of the two dimensional stabilizing sleeves; the two end pipes are coaxially fixed on the lower ends of the two dimension stabilizing rods respectively, and the diameters of the end pipes are the same as those of the dimension stabilizing sleeve; a limiting plate is fixed on the lower end of the end pipe.
Further, the swing arm driving mechanism comprises a mounting plate, a sliding sleeve, two supporting driving rods and a supporting driving motor;
the sliding sleeve is fixed at the center of the mounting plate in a penetrating way, and the sliding sleeve is sleeved on the outer sleeve;
a mounting cavity is arranged in the supporting bottom plate; the two support driving rods are vertically arranged on the upper side surface of the support bottom plate in a rotating mode, the lower ends of the two support driving rods extend into the installation cavity, and the upper ends of the two support driving rods are arranged on the middle layer plate in a rotating mode; threads are arranged at the middle parts of the two support driving rods; two mounting plate threaded holes which are respectively matched with the middle threads of the two support driving rods are formed in the mounting plate; the support driving motor is arranged in the installation cavity; a driving sprocket is arranged on an output shaft of the supporting driving motor; a driven sprocket is arranged on the extending ends of the two supporting driving rods; the driving chain wheel synchronously drives the two driven chain wheels through a chain; the four anti-tilting swing arms are respectively hinged on the four vertical side surfaces of the supporting bottom plate; the mounting plate drives four anti-tilting swing arms through four connecting driving rods;
a support driving circuit electrically connected with the controller is arranged in the control box; the support driving circuit is electrically connected with the support driving motor, and the controller drives the support driving motor to rotate through the support driving circuit; the key keyboard is provided with a support lifting key and a support releasing key which are electrically connected with the controller.
Further, each anti-tilting swing arm comprises a swing rod, an extension rod, a support screw rod, a connecting rod and a support driving rod;
the near ends of the four swing rods are respectively hinged on the four vertical side surfaces of the supporting bottom plate, and the four swing rods are distributed in a cross shape; the proximal end of the extension rod is fixed on the distal end of the swing rod; a supporting threaded hole is vertically arranged at the far end of the extension rod; the supporting screw rod is screwed on the supporting threaded hole; a supporting plate is fixed at the lower end of the supporting screw rod; a rotary handle is arranged at the upper end of the supporting screw rod; one end of the connecting driving rod is hinged on the swinging rod, and the other end is hinged on the edge of the mounting plate.
Further, a slide bar is vertically fixed on the outer wall of the outer pipe sleeve; the inner side wall of the sliding sleeve is provided with a sleeve chute which is in sliding fit with the sliding strip.
Compared with the prior art, the invention has the beneficial effects that: the swing arm driving mechanism is used for driving the four anti-tilting swing arms to support and position the supporting bottom plate, the edge of the supporting bottom plate is supported during maintenance, the stability is improved, and meanwhile, the supporting bottom plate is supported in multiple directions to prevent toppling; the two-stage lifting mechanism is utilized to realize the multi-stage lifting of the working platform, so that the working platform can reach the position of the aircraft to be overhauled; the fence is used for protecting the safety of maintenance personnel in the air.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a partial cross-sectional view of a support floor of the present invention;
FIG. 3 is a cross-sectional view of the two-stage lift mechanism of the present invention;
fig. 4 is a schematic circuit structure of the present invention.
Detailed Description
The technical scheme of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1 to 4, the ladder stand for aircraft maintenance provided by the present invention includes: comprises a working platform 1, a battery 11, a control box 3, a supporting bottom plate 12, a bottom plate supporting mechanism and a two-stage lifting mechanism;
the bottom plate supporting mechanism is arranged on the supporting bottom plate 12 and consists of a swing arm driving mechanism and four anti-tilting swing arms, and the swing arm driving mechanism drives the four anti-tilting swing arms to swing up and down, so that the supporting and positioning of the supporting bottom plate 12 are realized; the two-stage lifting mechanism is arranged on the supporting bottom plate 12, the working platform 1 is arranged on the two-stage lifting mechanism, and the height position of the working platform 1 is adjusted by the two-stage lifting mechanism; the surrounding edges of the working platform 1 are provided with fences 36; the control box 3 is installed on the fence 36 on one side; a key board 2 is arranged on the control box 3; the battery 11 is mounted on the support base plate 12;
a controller and a power module are arranged in the control box 3; the bottom plate supporting mechanism and the two-stage lifting mechanism are driven by a controller; the battery 11 supplies power to the controller, the bottom plate supporting mechanism and the two-stage lifting mechanism through the power supply module.
The swing arm driving mechanism is utilized to drive the four anti-tilting swing arms to swing up and down, so that the supporting bottom plate 12 is supported and positioned, the edge of the supporting bottom plate 12 is supported during maintenance, the stability is improved, and meanwhile, the supporting bottom plate is supported in multiple directions to prevent toppling; the two-stage lifting mechanism is utilized to realize the multi-stage lifting of the working platform 1, so that the working platform 1 can reach the position of the aircraft to be overhauled; the fence 36 is used to protect maintenance personnel from the air.
Further, a ladder stand 4 is installed on the rail 36 on one side; a diagonal brace is supported between the working platform 1 and the ladder stand 4. The climbing ladder 4 is utilized to facilitate maintenance personnel to climb on the working platform 1; the stability of the ladder 4 is ensured by the diagonal braces.
Further, universal wheels 10 are arranged at two vertex angles on the same side of the lower side surface of the supporting bottom plate 12, and electric rollers 19 are arranged at the other two vertex angles;
a roller driving circuit electrically connected with the controller is arranged in the control box 3; the roller driving circuit is electrically connected with the two electric rollers 19, and the controller coordinates and controls the two electric rollers 19 through the roller driving circuit; the key pad 2 is provided with a forward key, a backward key, a left turn key, and a right turn key which are electrically connected to the controller.
The movement of the ladder frame is realized by utilizing the cooperation between the two universal wheels 10 and the two electric rollers 19; the electric roller 19 is controlled by the controller by utilizing the forward key, the backward key, the left turning key and the right turning key, so that the working platform 1 is convenient to drive to move.
Further, the two-stage lifting mechanism consists of a first-stage lifting mechanism and a second-stage lifting mechanism; the primary lifting mechanism comprises a U-shaped bracket 22, a primary lifting driving motor 23, a middle-layer internal thread pipe sleeve 24 and a primary driving screw 32;
the upper edges of two vertical plates of the U-shaped bracket 22 are fixed at the center of the lower side surface of the working platform 1; the primary lifting driving motor 23 is arranged in the U-shaped bracket 22, and the end part of an output shaft of the primary lifting driving motor 23 downwards penetrates through the lower side plate of the U-shaped bracket 22; the upper end of the middle layer internal thread sleeve 24 is closed; a drive threaded hole 33 is provided on the closed end of the middle internal threaded sleeve 24; the primary driving screw 32 is coaxially fixed on the penetrating end of the output shaft of the primary lifting driving motor 23, and the primary driving screw 32 is screwed on the driving threaded hole 33; the middle internal thread pipe sleeve 24 is arranged on the secondary lifting mechanism;
a primary lifting driving circuit electrically connected with the controller is arranged in the control box 3; the primary lifting drive circuit is electrically connected with the primary lifting drive motor 23, and the controller drives the primary lifting drive motor 35 to rotate through the primary lifting drive circuit; the key pad 2 is provided with a primary up key and a primary down key electrically connected to the controller.
The primary lifting driving motor 23 is used for driving the primary driving screw 32 to lift on the middle-layer internal thread pipe sleeve 24 by utilizing the cooperation between the middle-layer internal thread pipe sleeve 24 and the primary driving screw 32, so that the primary adjustment of the height position of the working platform 1 is realized; the primary lifting key and the primary descending key are utilized to drive and control the primary lifting driving motor 35 through the controller, so that maintenance personnel can conveniently conduct primary adjustment on the height position of the working platform 1.
Further, the secondary lifting mechanism comprises an outer pipe sleeve 26, an inner driving pipe sleeve 34 and a secondary lifting driving motor 35;
the lower end of the outer sleeve 26 is fixed at the center of the upper side of the support base plate 12; the secondary lifting drive motor 35 is arranged on the upper side surface of the supporting bottom plate 12 and is positioned in the outer layer pipe sleeve 26; the lower end of the inner layer driving tube sleeve 34 is closed; the output shaft of the secondary lifting driving motor 35 is vertically upwards, and the end part of the output shaft is coaxially fixed on the closed end of the inner layer driving pipe sleeve 34; threads are provided on the outer tube wall of the inner drive tube sleeve 34; the middle internal thread sleeve 24 is screwed on the inner layer driving sleeve 34;
a secondary lifting driving circuit electrically connected with the controller is arranged in the control box 3; the second-stage lifting driving circuit is electrically connected with the second-stage lifting driving motor 35, and the controller drives the second-stage lifting driving motor 35 to rotate through the second-stage lifting driving circuit; the key pad 2 is provided with a secondary up key and a secondary down key electrically connected to the controller.
The inner layer driving pipe sleeve 34 is driven by the second-stage lifting driving motor 35 through the cooperation among the inner layer driving pipe sleeve 34, the middle layer internal thread pipe sleeve 24 and the outer layer pipe sleeve 26, the middle layer internal thread pipe sleeve 24 is driven to move upwards along the outer layer pipe sleeve 26, the second-stage lifting is completed, and the second-stage adjustment of the height position of the working platform 1 is realized; the secondary lifting driving motor 35 is driven and controlled by the controller by utilizing the secondary lifting key and the secondary descending key, so that maintenance personnel can conveniently carry out secondary adjustment on the height position of the working platform 1.
Further, a limit chute 37 is vertically arranged on the inner wall of the outer pipe sleeve 26; a limit slide block 38 which is in sliding fit with the limit slide groove 37 is fixed on the outer wall of the middle-layer internal thread pipe sleeve 24.
By utilizing the cooperation between the limiting sliding groove 37 and the limiting sliding block 38, the middle-layer internal thread pipe sleeve 24 is ensured to do lifting movement under the driving of the inner-layer driving pipe sleeve 34, and rotation is prevented.
Further, a maintenance mechanism is arranged on the working platform 1; the dimensional stabilizing mechanism comprises two dimensional stabilizing sleeves 20, two dimensional stabilizing rods 16 and two end pipes 17;
a middle layer plate 21 is fixed at the upper end of the outer layer pipe sleeve 26; the upper ends of the two dimensional stability sleeves 20 are fixed on the lower side surface of the working platform 1; two dimensionally stable sleeve holes are formed in the middle layer plate 21; the lower ends of the two dimension stabilizing sleeves 20 respectively penetrate through two dimension stabilizing sleeve holes;
the upper ends of the two dimensional stabilizing rods 16 are respectively inserted into the penetrating ends of the two dimensional stabilizing sleeves 20; the two end pipes 17 are coaxially fixed on the lower ends of the two dimensional stabilizing rods 16 respectively, and the diameters of the end pipes 17 and the dimensional stabilizing sleeve 20 are the same; a limiting plate 18 is fixed to the lower end of the end pipe 17.
The working platform 1 is prevented from shaking in the rising process by utilizing the cooperation between the two dimension stabilizing rods 16 and the two dimension stabilizing sleeves, so that the stability is ensured; the space occupied by the dimension stabilizing mechanism is reduced by utilizing the cooperation between the dimension stabilizing rod 16 and the dimension stabilizing sleeve 20; by utilizing the end pipe 17 and the limiting plate 18, the end pipe 17 can be always inserted on the dimension stabilizing sleeve hole in the ascending process of the working platform 1, and the dimension stabilizing rod 16 is driven to slowly extend out of the dimension stabilizing sleeve 20, so that the stability is enhanced.
Further, the swing arm driving mechanism comprises a mounting plate 14, a sliding sleeve 15, two supporting driving rods 27 and a supporting driving motor 28;
the sliding sleeve 15 is penetratingly fixed at the center of the mounting plate 14, and the sliding sleeve 15 is sleeved on the outer sleeve 26; a mounting cavity is arranged in the supporting bottom plate 12; the two support driving rods 27 are vertically and rotatably arranged on the upper side surface of the support bottom plate 12, the lower ends of the two support driving rods 27 extend into the installation cavity, and the upper ends of the two support driving rods 27 are rotatably arranged on the middle layer plate 21; threads are arranged at the middle parts of the two support driving rods 27; two mounting plate threaded holes which are respectively matched with the middle threads of the two supporting driving rods 27 are arranged on the mounting plate 14; the support drive motor 28 is mounted within the mounting cavity; a drive sprocket 30 is mounted on the output shaft of the support drive motor 28; a driven sprocket 29 is mounted on the extending ends of both support driving rods 27; the driving sprocket 30 synchronously drives the two driven sprockets 29 through a chain 31; the four anti-tilting swing arms are respectively hinged on the four vertical side surfaces of the supporting bottom plate 12; the mounting plate 14 drives four anti-tilting swing arms through four connecting driving rods 13;
a support driving circuit electrically connected with the controller is arranged in the control box 3; the support driving circuit is electrically connected with the support driving motor 28, and the controller drives the support driving motor 28 to rotate through the support driving circuit; the key pad 2 is provided with a support lifting key and a support releasing key which are electrically connected with the controller.
The driving sprocket 30, the two driven sprockets 29, the chain 31, the two support driving rods 27, the sliding sleeve 15 and the mounting plate 14 are matched, the driving sprocket 30 is driven by the support driving motor 28 to rotate so as to drive the two driven sprockets 29 to synchronously rotate, and the two support driving rods 27 synchronously rotate so as to drive the mounting plate 14 to lift, so that the four tilt-preventing swing arms are synchronously lifted and put down, and the positioning support of the support bottom plate 12 is realized; the support lifting key and the support releasing key are utilized, and the support driving motor 28 is driven and controlled through the controller, so that the swing arm driving mechanism is controlled to drive the four anti-tilting swing arms to synchronously support.
Further, each anti-tilting swing arm comprises a swing rod 5, an extension rod 6, a support screw 7, a connecting rod 13 and a support driving rod 27;
the proximal ends of the four swing rods 5 are respectively hinged on four vertical side surfaces of the supporting bottom plate 12, and the four swing rods 5 are distributed in a cross shape; the proximal end of the extension rod 6 is fixed on the distal end of the swing rod 5; a supporting threaded hole is vertically arranged on the distal end of the extension rod 6; the supporting screw rod 7 is screwed on the supporting threaded hole; a supporting plate 9 is fixed at the lower end of the supporting screw 7; a rotary handle 8 is arranged on the upper end of the supporting screw rod 7; one end of the connecting driving rod 13 is hinged on the swinging rod 5, and the other end is hinged on the edge of the mounting plate 14.
The supporting screw 7 is matched with the supporting threaded hole, so that the height position of the supporting plate 9 is adjusted, and the supporting plate 9 can be attached to the bottom surface for supporting when the swinging rod 5 swings downwards; the supporting screw rod 7 is convenient to rotate by using the rotating handle 8; utilize four swinging arms 5 to be cross and distribute and carry out diversified inclination prevention to supporting baseplate 12, guarantee supporting baseplate 12's stationarity, prevent to empty.
Further, a slide bar 25 is vertically fixed on the outer wall of the outer pipe sleeve 26; a sleeve slide groove which is in sliding fit with the slide bar 25 is provided on the inner side wall of the sliding sleeve 15. The sliding sleeve 15 is ensured to move up and down on the outer sleeve 26 by the cooperation between the sliding strip 25 and the sleeve sliding groove.
In the ladder frame for aircraft maintenance, the controller adopts the existing ARM processor module and is used for realizing coordination control; the electric roller 19 adopts the existing electric roller for realizing the movement of the ladder frame; the supporting driving motor 28, the primary lifting driving motor 35 and the secondary lifting driving motor 35 all adopt the existing stepping motors; the supporting driving circuit, the primary lifting driving circuit and the secondary lifting driving circuit all adopt corresponding stepping motor driving circuits.
When the ladder frame for aircraft maintenance is installed and used, a serviceman climbs the working platform 1 through the ladder stand 4, then presses the forward button, the backward button, the left turning button or the right turning button, and the controller receives signals and then cooperatively controls the two electric rollers 19 to move the ladder frame to a designated position; then pressing a supporting and lifting key, driving a supporting and driving motor 28 to rotate through a supporting and driving circuit after the controller receives signals, enabling two supporting and driving rods 27 to synchronously rotate to drive a middle layer plate 21 to move downwards, and enabling four anti-tilting swing arms to swing downwards to enable four supporting plates 9 to be supported on the ground; then the controller receives the signal and drives the primary lifting driving motor 23 to rotate through the primary lifting driving circuit, the primary driving screw 32 rotates and drives the working platform 1 to lift, then the secondary lifting key or the secondary descending key is pressed to further adjust the height, the controller receives the signal and drives the secondary lifting driving motor 35 to rotate through the secondary lifting driving circuit, the inner layer driving pipe sleeve 34 rotates and drives the middle layer inner thread pipe sleeve 24 to lift along the outer layer pipe sleeve 26, and the height position of the working platform 1 is further adjusted, so that the working platform 1 stably lifts to a maintenance position.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A ladder frame for aircraft maintenance, characterized in that: the device comprises a working platform (1), a battery (11), a control box (3), a supporting bottom plate (12), a bottom plate supporting mechanism and a two-stage lifting mechanism;
the bottom plate supporting mechanism is arranged on the supporting bottom plate (12), consists of a swing arm driving mechanism and four anti-tilting swing arms and drives the four anti-tilting swing arms to swing up and down by the swing arm driving mechanism, so that the supporting and positioning of the supporting bottom plate (12) are realized; the two-stage lifting mechanism is arranged on the supporting bottom plate (12), the working platform (1) is arranged on the two-stage lifting mechanism, and the height position of the working platform (1) is adjusted by the two-stage lifting mechanism; fence (36) are arranged at the peripheral edges of the working platform (1); the control box (3) is arranged on the fence (36) at one side; a key board (2) is arranged on the control box (3); the battery (11) is arranged on the supporting bottom plate (12);
a controller and a power supply module are arranged in the control box (3); the bottom plate supporting mechanism and the two-stage lifting mechanism are driven by a controller; the battery (11) supplies power to the controller, the bottom plate supporting mechanism and the two-stage lifting mechanism through the power supply module;
a ladder stand (4) is arranged on the fence (36) at one side; an inclined stay bar is supported between the working platform (1) and the crawling ladder (4);
the two-stage lifting mechanism consists of a first-stage lifting mechanism and a second-stage lifting mechanism; the primary lifting mechanism comprises a U-shaped bracket (22), a primary lifting driving motor (23), a middle-layer internal thread pipe sleeve (24) and a primary driving screw (32);
the upper edges of two vertical plates of the U-shaped bracket (22) are fixed at the center of the lower side surface of the working platform (1); the primary lifting driving motor (23) is arranged in the U-shaped bracket (22), and the end part of an output shaft of the primary lifting driving motor (23) downwards penetrates through the lower side plate of the U-shaped bracket (22); the upper end of the threaded pipe sleeve (24) in the middle layer is closed; a drive threaded hole (33) is formed in the closed end of the middle-layer internal thread pipe sleeve (24); the primary driving screw (32) is coaxially fixed on the penetrating end of the output shaft of the primary lifting driving motor (23), and the primary driving screw (32) is screwed on the driving threaded hole (33); the middle-layer inner thread pipe sleeve (24) is arranged on the secondary lifting mechanism;
a primary lifting driving circuit electrically connected with the controller is arranged in the control box (3); the first-stage lifting driving circuit is electrically connected with the first-stage lifting driving motor (23), and the controller drives the first-stage lifting driving motor (23) to rotate through the first-stage lifting driving circuit; the key keyboard (2) is provided with a first-level ascending key and a first-level descending key which are electrically connected with the controller.
2. The ladder assembly for aircraft maintenance of claim 1, wherein: universal wheels (10) are arranged at two vertex angles on the same side edge of the lower side surface of the supporting bottom plate (12), and electric rollers (19) are arranged at the other two vertex angles;
a roller driving circuit electrically connected with the controller is arranged in the control box (3); the roller driving circuit is electrically connected with the two electric rollers (19), and the controller coordinates and controls the two electric rollers (19) through the roller driving circuit; the key keyboard (2) is provided with a forward key, a backward key, a left turning key and a right turning key which are electrically connected with the controller.
3. The ladder assembly for aircraft maintenance of claim 1, wherein: the secondary lifting mechanism comprises an outer layer pipe sleeve (26), an inner layer driving pipe sleeve (34) and a secondary lifting driving motor (35);
the lower end of the outer tube sleeve (26) is fixed at the center of the upper side surface of the supporting bottom plate (12); the second-stage lifting driving motor (35) is arranged on the upper side surface of the supporting bottom plate (12) and is positioned in the outer layer pipe sleeve (26); the lower end of the inner layer driving pipe sleeve (34) is closed; an output shaft of the secondary lifting driving motor (35) is vertically upwards, and the end part of the output shaft is coaxially fixed on the closed end of the inner layer driving pipe sleeve (34); threads are arranged on the outer pipe wall of the inner layer driving pipe sleeve (34); the middle-layer inner thread sleeve (24) is screwed on the inner-layer driving sleeve (34);
a secondary lifting driving circuit electrically connected with the controller is arranged in the control box (3); the second-stage lifting driving circuit is electrically connected with the second-stage lifting driving motor (35), and the controller drives the second-stage lifting driving motor (35) to rotate through the second-stage lifting driving circuit; the key keyboard (2) is provided with a secondary ascending key and a secondary descending key which are electrically connected with the controller.
4. A ladder assembly for aircraft maintenance according to claim 3, characterized in that: a limit chute (37) is vertically arranged on the inner wall of the outer pipe sleeve (26); a limit sliding block (38) which is in sliding fit with the limit sliding groove (37) is fixed on the outer wall of the middle-layer internal thread pipe sleeve (24).
5. A ladder assembly for aircraft maintenance according to claim 3, characterized in that: a maintenance mechanism is arranged on the working platform (1); the dimension stabilizing mechanism comprises two dimension stabilizing sleeves (20), two dimension stabilizing rods (16) and two end pipes (17);
a middle layer plate (21) is fixed at the upper end of the outer layer pipe sleeve (26); the upper ends of the two dimension stabilizing sleeves (20) are fixed on the lower side surface of the working platform (1); two dimensionally stable sleeve holes are formed in the middle layer plate (21); the lower ends of the two dimension stabilizing sleeves (20) respectively penetrate through two dimension stabilizing sleeve holes;
the upper ends of the two dimension stabilizing rods (16) are respectively inserted into the penetrating ends of the two dimension stabilizing sleeves (20); the two end pipes (17) are coaxially fixed on the lower ends of the two dimension stabilizing rods (16) respectively, and the diameters of the end pipes (17) are the same as those of the dimension stabilizing sleeve (20); a limiting plate (18) is fixed on the lower end of the end pipe (17).
6. The ladder assembly for aircraft maintenance of claim 5, wherein: the swing arm driving mechanism comprises a mounting plate (14), a sliding sleeve (15), two supporting driving rods (27) and a supporting driving motor (28);
the sliding sleeve (15) is fixed at the center of the mounting plate (14) in a penetrating way, and the sliding sleeve (15) is sleeved on the outer sleeve (26);
a mounting cavity is arranged in the supporting bottom plate (12); the two support driving rods (27) are vertically arranged on the upper side surface of the support bottom plate (12) in a rotating mode, the lower ends of the two support driving rods (27) extend into the installation cavity, and the upper ends of the two support driving rods (27) are arranged on the middle layer plate (21) in a rotating mode; threads are arranged at the middle parts of the two supporting driving rods (27); two mounting plate threaded holes which are respectively matched with the middle threads of the two supporting driving rods (27) are formed in the mounting plate (14); a support drive motor (28) is mounted within the mounting cavity; a drive sprocket (30) is mounted on the output shaft of the support drive motor (28); a driven sprocket (29) is arranged on the extending ends of the two supporting driving rods (27); the driving chain wheel (30) synchronously drives the two driven chain wheels (29) through a chain (31); the four anti-tilting swing arms are respectively hinged on the four vertical side surfaces of the supporting bottom plate (12); the mounting plate (14) drives the four anti-tilting swing arms through four connecting driving rods (13);
a supporting driving circuit which is electrically connected with the controller is arranged in the control box (3); the support driving circuit is electrically connected with the support driving motor (28), and the controller drives the support driving motor (28) to rotate through the support driving circuit; the key keyboard (2) is provided with a support lifting key and a support releasing key which are electrically connected with the controller.
7. The ladder assembly for aircraft maintenance of claim 6, wherein: each anti-tilting swing arm comprises a swing rod (5), an extension rod (6), a support screw (7), a connecting rod (13) and a support driving rod (27);
the near ends of the four swing rods (5) are respectively hinged on four vertical side surfaces of the supporting bottom plate (12), and the four swing rods (5) are distributed in a cross shape; the proximal end of the extension rod (6) is fixed on the distal end of the swinging rod (5); a supporting threaded hole is vertically arranged at the far end of the extension rod (6); the supporting screw rod (7) is screwed on the supporting threaded hole; a supporting plate (9) is fixed at the lower end of the supporting screw (7); a rotary handle (8) is arranged at the upper end of the supporting screw rod (7); one end of the connecting driving rod (13) is hinged on the swinging rod (5), and the other end is hinged on the edge of the mounting plate (14).
8. The ladder assembly for aircraft maintenance of claim 6, wherein: a slide bar (25) is vertically fixed on the outer wall of the outer pipe sleeve (26); a sleeve chute which is in sliding fit with the slide bar (25) is arranged on the inner side wall of the sliding sleeve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110747997.7A CN113443593B (en) | 2021-07-01 | 2021-07-01 | Ladder frame for aircraft maintenance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747997.7A CN113443593B (en) | 2021-07-01 | 2021-07-01 | Ladder frame for aircraft maintenance |
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| CN113443593A CN113443593A (en) | 2021-09-28 |
| CN113443593B true CN113443593B (en) | 2024-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114278072B (en) * | 2021-12-23 | 2023-03-31 | 通州建总集团有限公司 | Construction work platform for constructional engineering |
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| EP2436641A1 (en) * | 2010-10-04 | 2012-04-04 | Lebro Verwertungs-GbR | Telescopic working platform |
| CN105197849A (en) * | 2015-09-17 | 2015-12-30 | 沈阳农业大学 | Multifunctional rail operating car for greenhouse |
| CN105645322A (en) * | 2016-02-25 | 2016-06-08 | 国网山东省电力公司章丘市供电公司 | Intelligent lifting platform for electricity maintenance and using method thereof |
| CN210048461U (en) * | 2019-06-25 | 2020-02-11 | 中国农业大学 | Manual operation platform for small-sized facilities |
| CN215326810U (en) * | 2021-07-01 | 2021-12-28 | 广州新科宇航科技有限公司 | Lifting device for airplane maintenance |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6651775B2 (en) * | 2000-07-31 | 2003-11-25 | Frederick N. Bassett, Jr. | Low level scaffold with ballscrew drive |
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|---|---|---|---|---|
| EP2436641A1 (en) * | 2010-10-04 | 2012-04-04 | Lebro Verwertungs-GbR | Telescopic working platform |
| CN105197849A (en) * | 2015-09-17 | 2015-12-30 | 沈阳农业大学 | Multifunctional rail operating car for greenhouse |
| CN105645322A (en) * | 2016-02-25 | 2016-06-08 | 国网山东省电力公司章丘市供电公司 | Intelligent lifting platform for electricity maintenance and using method thereof |
| CN210048461U (en) * | 2019-06-25 | 2020-02-11 | 中国农业大学 | Manual operation platform for small-sized facilities |
| CN215326810U (en) * | 2021-07-01 | 2021-12-28 | 广州新科宇航科技有限公司 | Lifting device for airplane maintenance |
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