Lift truck for aviation airport maintenance

Abstract

The utility model relates to the technical field of lift trucks, in particular to a lift truck for aviation airport maintenance, which comprises a chassis, a scissor-fork type lifting mechanism arranged on the chassis, a platform fixedly arranged on the scissor-fork type lifting mechanism, a walking mechanism arranged on the chassis, and the whole chassis is a square frame. The inner side wall of the chassis is provided with a hinge seat and a lower-layer sliding groove. Storage chambers are fixedly arranged on the outer side walls of the two sides of the chassis; a battery, a charger and an alternating current controller are arranged in the storage chamber. Compared with the prior art, the scissor-fork type lifting mechanism is arranged on the inner side of the chassis, the storage chambers are arranged on the two sides of the chassis, the height of the whole lift truck for aviation airport maintenance is reduced when the lift truck is folded, and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lift trucks, and specifically discloses a lift truck for aircraft maintenance at airports. Background Art

[0002] The number of modern aviation equipment is increasing day by day, and the aircraft maintenance work at airports and aircraft repair plants is also increasing. During the maintenance and transformation of aircraft, since most main-line and branch-line civil aviation models are tall, the height from the cabin door and the floor to the ground is relatively high. When maintaining an aircraft, it often involves the disassembly and assembly of a large number of equipment such as seats in the cabin, and a lift truck is required for this purpose.

[0003] For example, the patent with the publication number CN215854888U discloses a mobile scissor lift platform, which belongs to the technical field of lift platforms and includes a base, a scissor lift mechanism for the lift platform, and a hydraulic telescopic rod. A battery pack and a moving mechanism are provided inside the base. The moving mechanism includes a first moving shaft, a second moving shaft, and a moving reduction gear. First shaft sprockets and second shaft sprockets are respectively provided at both ends of the first moving shaft and the second moving shaft. Moving casters are provided at the ends of the first moving shaft and the second moving shaft.

[0004] In the above solution, a scissor mechanism is provided on the top surface of the base, and a battery is provided inside the base. When the scissor mechanism is retracted, the height of the entire mobile scissor lift platform is relatively high, occupying storage space. Moreover, it lacks an anti-collision function, affecting the safety of operations. Summary of the Utility Model

[0005] Aiming at the above deficiencies of the prior art, the utility model provides a lift truck for aircraft maintenance at airports to solve the problem that when a scissor mechanism is provided on the top surface of the base and a battery is provided inside the base, the height of the entire mobile scissor lift platform is relatively high when the scissor mechanism is retracted, occupying storage space.

[0006] To achieve the above object, the technical solution of the utility model is as follows:

[0007] A lift truck for aircraft airport maintenance, comprising a chassis. A scissor lift mechanism is arranged on the chassis, and a platform is fixedly arranged on the scissor lift mechanism. A traveling mechanism is arranged on the chassis, and the chassis is integrally arranged in a square frame shape. Hinge seats and lower-layer chutes are arranged on the inner side walls of the chassis. The scissor lift mechanism comprises a first-layer fork frame and a second-layer fork frame which are hinged to each other. One end of the first-layer fork frame is hinged to the hinge seat, and the other end is slidably arranged in the lower-layer chute. An electric telescopic cylinder is hinged to the first-layer fork frame. The output end of the electric telescopic cylinder is hinged to the second-layer fork frame. The platform is arranged at the upper end of the second-layer fork frame. Storage rooms are fixedly arranged on the outer side walls on both sides of the chassis. A battery, a charger and an AC controller are arranged in the storage rooms. The scissor lift mechanism is arranged inside the chassis, and the storage rooms are arranged on both sides of the chassis, reducing the height of the entire lift truck for aircraft airport maintenance when it is retracted and reducing the occupied space.

[0008] Preferably, one end of the second-layer fork frame is hinged to the bottom surface of the platform, and the other end is slidably arranged in the upper-layer chute. One end of the first-layer fork frame is provided with a pin shaft, and the pin shaft is slidably arranged in the lower-layer chute. The cylinder body of the electric telescopic cylinder is hinged to the pin shaft, and the output end of the electric telescopic cylinder is hinged to an ear. The ear is fixedly arranged on the second-layer fork frame. The setting of the scissor lift mechanism is completed.

[0009] Preferably, a controller and an emergency switch are arranged on the side wall of the storage room; a photoelectric switch is arranged on the side wall of the platform; the photoelectric switch is electrically connected to the controller. Through the setting of the photoelectric switch, an anti-collision function is provided, improving the operation safety.

[0010] Preferably, the traveling mechanism comprises universal driving wheels and directional driven wheels; directional driven wheels are rotatably arranged on both sides at the rear end of the chassis; a bracket is arranged at the front end of the chassis through a support rod; mounting plates are hinged to both ends of the bracket through support pins; universal driving wheels are rotatably arranged on the mounting plates; the cross section of the mounting plate is in an L shape; a speed reducer is fixedly arranged on the mounting plate; the output end of the speed reducer penetrates through the mounting plate to be connected to the universal driving wheel; the input end of the speed reducer is connected to a motor; the mounting plate is connected with a steering component. The motor drives the universal driving wheels to rotate through the speed reducer, thereby driving the movement of the lift truck for aircraft airport maintenance.

[0011] Preferably, the steering component comprises positioning pins fixedly arranged on the mounting plates; the positioning pins of the two mounting plates are connected through a cross tie rod; a steering electric cylinder is hinged to the cross tie rod; the cylinder body of the steering electric cylinder is hinged to the bracket. When the steering electric cylinder acts, it pulls the cross tie rod to translate, thereby driving the mounting plate to rotate around the support pin, making the universal driving wheels rotate and realizing the steering function.

[0012] Preferably, two side guardrails are detachably arranged on the platform; one end of the side guardrail is connected with a gate rail through a hinge. The detachably arranged side guardrails further reduce the height of the lift truck for aircraft airport maintenance when it is retracted.

[0013] The beneficial effects of the present utility model are as follows: The scissor lift mechanism is arranged inside the chassis, and the storage rooms are arranged on both sides of the chassis, reducing the height of the lift truck for airport maintenance when it is retracted and minimizing the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0015] Figure 1 Structural schematic diagram of the present utility model;

[0016] Figure 2 is Figure 1 Top view structural schematic diagram after removing the scissor lift mechanism;

[0017] Figure 3 is Figure 1 Right view structural schematic diagram after removing the scissor lift mechanism in

[0018] Figure 4 is Figure 1 Partial sectional structural schematic diagram after removing the scissor lift mechanism;

[0019] Figure 5 is Figure 1 Left view of the platform in

[0020] Description of the reference numerals:

[0021] 1 - Door rail, 2 - Side guardrail, 3 - Platform, 4 - Second - layer fork, 5 - Ear, 6 - Electric telescopic cylinder, 7 - First - layer fork, 8 - Support pin, 9 - Positioning pin, 10 - Cross tie rod, 11 - Mounting plate, 12 - Universal drive wheel, 13 - Controller, 14 - Emergency switch, 15 - Storage room, 16 - Directional driven wheel, 17 - Upper - layer chute, 18 - Steering electric cylinder, 19 - Reducer, 20 - Motor, 21 - Battery, 22 - Charging controller, 23 - Charger, 24 - Guard plate, 25 - Photoelectric switch, 26 - Chassis, 27 - Hinge seat, 28 - Bracket, 29 - Lower - layer chute, 30 - Support rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 1-5 shown, a lift truck for aircraft airport maintenance includes a chassis 26. A scissor lift mechanism is provided on the chassis 26, and a platform 3 is fixedly provided on the scissor lift mechanism. A traveling mechanism is provided on the chassis 26, and the chassis 26 is integrally arranged in a square frame shape; hinge seats 27 and lower-layer chutes 29 are provided on the inner side walls of the chassis 26; the scissor lift mechanism includes a first-layer fork frame 7 and a second-layer fork frame 4 that are hinged to each other; one end of the first-layer fork frame 7 is hinged to the hinge seat 27, and the other end is slidably arranged in the lower-layer chute 29; an electric telescopic cylinder 6 is hinged to the first-layer fork frame 7; the output end of the electric telescopic cylinder 6 is hinged to the second-layer fork frame 4; the platform 3 is arranged at the upper end of the second-layer fork frame 4; storage rooms 15 are fixedly provided on the outer side walls on both sides of the chassis 26; a battery 21, a charger 23, and a charging controller 22 are arranged in the storage rooms 15. The scissor lift mechanism is arranged inside the chassis 26, and the storage rooms 15 are arranged on both sides of the chassis 26, reducing the height of the entire lift truck for aircraft airport maintenance when it is retracted and reducing the occupied space. The charging controller 22 uses an AC power supply, and adopting an AC power supply increases the durability. Two side guardrails 2 are detachably arranged on the platform 3; one end of the side guardrail 2 is connected to a door rail 1 through a hinge. The detachably arranged side guardrails 2 further reduce the height of the lift truck for aircraft airport maintenance when it is retracted.

[0024] In the above arrangement, one end of the second-layer fork frame 4 is hinged to the bottom surface of the platform 3, and the other end is slidably arranged in the upper-layer chute 17; one end of the first-layer fork frame 7 is provided with a pin shaft, and the pin shaft is slidably arranged in the lower-layer chute 29; the cylinder body of the electric telescopic cylinder 6 is hinged to the pin shaft, and the output end of the electric telescopic cylinder 6 is hinged to an ear 5; the ear 5 is fixedly provided on the second-layer fork frame 4. The setting of the scissor lift mechanism is completed. A controller 13 and an emergency switch 14 are arranged on the side wall of the storage room 15; a photoelectric switch 25 is arranged on the side wall of the platform 3; the photoelectric switch 25 is electrically connected to the controller 13. Through the setting of the photoelectric switch 25, an anti-collision function is provided, improving the operation safety.

[0025] Among them, the traveling mechanism includes universal driving wheels 12 and directional driven wheels 16; directional driven wheels 16 are rotatably arranged on both sides of the rear end of the chassis 26, and a guard plate 24 is arranged above the directional driven wheels 16, and the guard plate 24 is fixedly arranged on the chassis 26; a bracket 28 is arranged at the front end of the chassis 26 through a support rod 30; mounting plates 11 are hinged to both ends of the bracket 28 through support pins 8; universal driving wheels 12 are rotatably arranged on the mounting plates 11; the cross-section of the mounting plate 11 is L-shaped; a speed reducer 19 is fixedly arranged on the mounting plate 11; the output end of the speed reducer 19 penetrates through the mounting plate 11 and is connected to the universal driving wheel 12; the input end of the speed reducer 19 is connected to a motor 20; the mounting plate 11 is connected with a steering assembly. The motor 20 drives the universal driving wheel 12 to rotate through the speed reducer 19, thereby driving the movement of the lift truck for airport maintenance. The steering assembly includes a positioning pin 9 fixedly arranged on the mounting plate 11; the positioning pins 9 of the two mounting plates 11 are connected through a cross rod 10; a steering electric cylinder 18 is hinged on the cross rod 10; the cylinder body of the steering electric cylinder 18 is hinged on the bracket 28. When the steering electric cylinder 18 acts, it pulls the cross rod 10 to translate, thereby driving the mounting plate 11 to rotate around the support pin 8, so that the universal driving wheel 12 rotates, realizing the steering function.

[0026] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A lift truck for aircraft airport maintenance, comprising a chassis (26), a scissor lift mechanism is arranged on the chassis (26), a platform (3) is fixedly arranged on the scissor lift mechanism, and a traveling mechanism is arranged on the chassis (26), characterized in that, The chassis (26) is integrally arranged in a rectangular frame shape; hinge seats (27) and lower-layer chutes (29) are arranged on the inner side walls of the chassis (26); the scissor lift mechanism includes a first-layer fork frame (7) and a second-layer fork frame (4) which are hinged to each other; one end of the first-layer fork frame (7) is hinged to the hinge seat (27), and the other end is slidably arranged in the lower-layer chute (29); an electric telescopic cylinder (6) is hinged to the first-layer fork frame (7); the output end of the electric telescopic cylinder (6) is hinged to the second-layer fork frame (4); the platform (3) is arranged at the upper end of the second-layer fork frame (4); storage compartments (15) are fixedly arranged on the outer side walls on both sides of the chassis (26); a battery (21), a charger (23) and a charging controller (22) are arranged in the storage compartments (15).

2. The lift truck for aircraft airport maintenance according to claim 1, characterized in that, One end of the second-layer fork frame (4) is hinged to the bottom surface of the platform (3), and the other end is slidably arranged in the upper-layer chute (17); a pin shaft is arranged at one end of the first-layer fork frame (7), and the pin shaft is slidably arranged in the lower-layer chute (29); the cylinder body of the electric telescopic cylinder (6) is hinged to the pin shaft, and the output end of the electric telescopic cylinder (6) is hinged to an ear (5); the ear (5) is fixedly arranged on the second-layer fork frame (4).

3. The lift truck for aircraft airport maintenance according to claim 2, characterized in that, A controller (13) and an emergency switch (14) are arranged on the side wall of the storage compartment (15); a photoelectric switch (25) is arranged on the side wall of the platform (3); the photoelectric switch (25) is electrically connected to the controller (13).

4. The lift truck for aviation airport maintenance according to claim 3, wherein The traveling mechanism includes universal driving wheels (12) and directional driven wheels (16); directional driven wheels (16) are rotatably arranged on both sides at the rear end of the chassis (26); a bracket (28) is arranged at the front end of the chassis (26) through a support rod (30); mounting plates (11) are hinged to both ends of the bracket (28) through support pins (8); universal driving wheels (12) are rotatably arranged on the mounting plates (11); the cross section of the mounting plate (11) is arranged in an L shape; a speed reducer (19) is fixedly arranged on the mounting plate (11); the output end of the speed reducer (19) penetrates through the mounting plate (11) and is connected to the universal driving wheel (12); the input end of the speed reducer (19) is connected to a motor (20); the mounting plate (11) is connected with a steering assembly.

5. The lift truck for aircraft airport maintenance according to claim 4, characterized in that, The steering assembly includes positioning pins (9) fixedly arranged on the mounting plate (11); the positioning pins (9) of the two mounting plates (11) are connected through a cross tie rod (10); a steering electric cylinder (18) is hinged to the cross tie rod (10); the cylinder body of the steering electric cylinder (18) is hinged to the bracket (28).

6. The lift truck for aircraft airport maintenance according to claim 2, wherein, Two side guardrails (2) are detachably arranged on the platform (3); one end of the side guardrail (2) is connected with a door rail (1) through a hinge.

Images