Overhaul lifting platform car

Abstract

A maintenance lifting platform car comprises a lifting platform ladder and a walking mechanism driving the lifting platform ladder to walk, the lifting platform ladder comprises a bottom frame, a first-layer platform arranged above one side of the bottom frame, a second-layer platform arranged above the other side of the bottom frame and a third-layer platform arranged above the first-layer platform, and the third-layer platform is higher than the second-layer platform. The second-layer platform is higher than the first-layer platform, a first-layer stair is arranged between the bottom frame and the first-layer platform, a second-layer stair is arranged between the first-layer platform and the second-layer platform, a third-layer stair is arranged between the second-layer platform and the third-layer platform, a support is arranged on the bottom frame, the first-layer platform and the second-layer platform are fixed on the support, and the first-layer platform and the second-layer platform are fixed on the support. And the bottom of the three-layer platform is fixed on the bracket through a lifting mechanism. The device is high in stability, meets the load and use requirements during overhauling, is convenient to maintain, and can improve the efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a maintenance lifting platform vehicle. Background Art

[0002] Maintenance platform vehicles are used for aircraft maintenance at airports. Current maintenance platform vehicles either do not have a lifting function or use a lifting platform with a large stroke. These maintenance platforms do not have a lifting and fine-tuning function and often require more time to adjust the position, resulting in low maintenance efficiency. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a maintenance lifting platform vehicle with high stability, meeting the load and use requirements during maintenance, being easy to maintain and improving efficiency.

[0004] The lifting platform is a kind of maintenance lifting platform vehicle, comprises a lifting platform ladder and a walking mechanism that drives the lifting platform ladder to move, the lifting platform ladder comprises a bottom frame, a first-floor platform arranged above one side of the bottom frame, a second-floor platform arranged above the other side of the bottom frame and a third-floor platform arranged above the first-floor platform, the third-floor platform is higher than the second-floor platform, the second-floor platform is higher than the first-floor platform, a first-floor staircase is provided between the bottom frame and the first-floor platform, a second-floor staircase is provided between the first-floor platform and the second-floor platform, and a third-floor staircase is provided between the second-floor platform and the third-floor platform, a bracket is provided on the bottom frame, the first-floor platform and the second-floor platform are fixed on the bracket, the bottom of the third-floor platform is fixed on the bracket through a lifting mechanism, and a control box for controlling the lifting mechanism is provided on the third-floor platform, the third-floor staircase comprises a plurality of stair plates and two parallel support rods arranged on both sides of the stair plates, the ends of the stair plates are hinged to the two support rods on both sides, one end of the support rod is hinged to the second-floor platform, and the other end of the support rod is hinged to the third-floor platform. Principle of the utility model: The utility model has walking function and lifting function, and is used for inspection and maintenance of aircraft; the inspection and maintenance lifting platform vehicle stops after being transported to the designated position, and the inspection personnel can go up to the third platform through the first platform, the second platform and the stairs. The inspection personnel can operate the lifting mechanism on the third platform to make the third platform rise and fall to adapt to the inspection position. The inspection personnel can achieve the most ideal effect through this function and improve the inspection efficiency.

[0005] As an improvement, the lifting mechanism is a scissor-type hydraulic lifting mechanism.

[0006] As an improvement, a traction rod is provided at the front end of the bottom frame, and the traction rod is mounted on the bottom frame through a hinged seat.

[0007] As an improvement, the walking mechanism includes front wheels on both sides of the front of the base frame, rear wheels on both sides of the rear of the base frame, and a transmission assembly for driving the rear wheels. The transmission assembly includes an axle connecting the two rear wheels, a first transmission rod arranged parallel to the axle, a second transmission rod perpendicular to the first transmission rod, and a third transmission rod arranged above the first transmission rod and perpendicular to the second transmission rod. The first transmission rod and the axle are driven by a chain, the lower end of the second transmission rod and the first transmission rod are driven by a differential, one end of the third transmission rod and the upper end of the second transmission rod are driven by a gear set, and the other end of the third transmission rod is provided with a handwheel.

[0008] As an improvement, the axle is mounted on the bottom frame through a bearing seat, the first transmission rod is mounted on the bottom frame through a bearing seat, the second transmission rod is mounted on the bracket through a bearing seat, and the third transmission rod is mounted on the bracket through a bearing seat. The gear set consists of two mutually meshing crown gears, and the third transmission rod outputs power through a clutch.

[0009] As an improvement, a lighting device, an insurance alarm safety device and a power supply device are also provided.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] Maintenance personnel can operate the lifting mechanism on the three-layer platform to fine-tune the height of the three-layer platform. The walking mechanism has high stability and the position of the three-layer platform can be fine-tuned through the handwheel and differential. Maintenance personnel can achieve the most ideal effect through this function and improve maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model.

[0013] Figure 2 It is a side view of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] A maintenance lifting platform vehicle comprises a lifting platform ladder and a traveling mechanism for driving the lifting platform ladder to travel.

[0016] like Figure 1 、 2As shown, the platform elevator comprises a base frame 1, a first-level platform 4 located above one side of the base frame 1, a second-level platform 5 located above the other side of the base frame 1, and a third-level platform 7 located above the first-level platform 4. The third-level platform 7 is higher than the second-level platform 5, which is higher than the first-level platform 4. A first-level staircase 3 is located between the base frame 1 and the first-level platform 4, a second-level staircase 19 is located between the first-level platform 4 and the second-level platform 5, and a third-level staircase 6 is located between the second-level platform 5 and the third-level platform 7. The base frame 1 is rectangular and is welded from a plurality of cross-section square tubes. A bracket 2 is mounted on the base frame 1, to which the first-level platform 4 and the second-level platform 5 are fixed. The bottom of the third-level platform 7 is fixed to the bracket 2 via a lifting mechanism 8. This lifting mechanism is a scissor-type hydraulic lifting mechanism with a short stroke, used for fine-tuning the height of the third-level platform 7. A control box for controlling the lifting mechanism 8 is located on the third-level platform 7, allowing maintenance personnel standing on the third-level platform 7 to control the height of the lifting mechanism 8 via the control box. The three-story staircase 6 includes a plurality of stair treads and two parallel support rods disposed on either side of the stair treads. The stair treads are hinged to the two support rods at either end. One end of the support rod is hinged to the second-story platform 5, and the other end of the support rod is hinged to the third-story platform 7. The three-story staircase 6 can adaptively deform as the height of the third-story platform 7 changes. A traction rod 20 is provided at the front end of the base frame 1. The traction rod 20 is mounted on the base frame 1 via an articulated seat. The traction rod 20 can be flipped up and down. When the traction rod 20 is in a horizontal state, it is in a walking mode, and the tractor uses the traction rod 20 to drag the maintenance lift platform for travel. When the traction rod 20 is in a vertical state, it is in a braking mode, and the maintenance lift platform is in a braking state.

[0017] like Figure 1 、 2As shown, the walking mechanism includes front wheels 9 provided on both sides of the front portion of the base frame 1 , rear wheels 16 provided on both sides of the rear portion of the base frame 1 , and a transmission assembly for driving the rear wheels 16 . The transmission assembly includes an axle 17 connecting the two rear wheels 16, a first transmission rod 13 arranged parallel to the axle 17, a second transmission rod 12 perpendicular to the first transmission rod 13, and a third transmission rod 11 arranged above the first transmission rod 13 and perpendicular to the second transmission rod 12; the first transmission rod 13 and the axle 17 are transmitted by a chain 15, the lower end of the second transmission rod 12 and the first transmission rod 13 are transmitted by a differential 14, one end of the third transmission rod 11 and the upper end of the second transmission rod 12 are transmitted by a gear set, and the other end of the third transmission rod 11 is provided with a handwheel 10; the axle 17 is mounted on the base frame 1 through a bearing seat, the first transmission rod 13 is mounted on the base frame 1 through a bearing seat, the second transmission rod 12 is mounted on the bracket 2 through a bearing seat, and the third transmission rod 11 is mounted on the bracket 2 through a bearing seat. The gear set consists of two mutually meshing crown gears, and the third transmission rod 11 outputs power through a clutch. When the maintenance lift platform is in normal operation, the clutch disengages the handwheel 10. When the position of the maintenance lift platform needs to be fine-tuned, the handwheel 10 drives the rear wheel 16 through the transmission assembly. The traction rod 20 is connected to the brake rod 18 through the fourth transmission rod. The two ends of the brake rod 18 are connected to the brake 21, which is used to brake the rear wheel 16. When the traction rod 20 is turned upward, it drives the fourth transmission rod to rotate the brake rod 18.

[0018] The maintenance platform is also equipped with lighting, safety alarms, and a power supply. The power supply includes batteries and solar panels to meet the needs of nighttime operations. Once the maintenance platform is transported to the designated aircraft maintenance area, the brakes are engaged, and after ensuring a safe position around the maintenance area, the safety alarms are deployed.

[0019] Principle of the utility model: The utility model has walking function and lifting function, and is used for inspection and maintenance of aircraft; the inspection and maintenance lifting platform vehicle stops after being transported to the designated position, and the inspection personnel can go up to the third-layer platform 7 through the first-layer platform 4, the second-layer platform 5 and the stairs. The inspection personnel can operate the lifting mechanism 8 on the third-layer platform 7 to make the third-layer platform 7 rise and fall to adapt to the inspection position. The inspection personnel can achieve the most ideal effect through this function and improve the inspection efficiency.

Claims

1. A maintenance lift platform vehicle, comprising a lift platform ladder and a traveling mechanism for driving the lift platform ladder, characterized in that: The lifting platform ladder includes a bottom frame, a first-floor platform arranged above one side of the bottom frame, a second-floor platform arranged above the other side of the bottom frame, and a third-floor platform arranged above the first-floor platform, the third-floor platform is higher than the second-floor platform, and the second-floor platform is higher than the first-floor platform, a staircase is provided between the bottom frame and the first-floor platform, a second staircase is provided between the first-floor platform and the second-floor platform, and three staircases are provided between the second-floor platform and the third-floor platform. A bracket is provided on the bottom frame, the first-floor platform and the second-floor platform are fixed on the bracket, the bottom of the three-floor platform is fixed to the bracket through a lifting mechanism, and a control box for controlling the lifting mechanism is provided on the three-floor platform. The three-floor stairs include several stair plates and two parallel support rods arranged on both sides of the stair plates, the ends of the stair plates are hinged to two support rods on both sides, one end of the support rod is hinged to the second-floor platform, and the other end of the support rod is hinged to the third-floor platform.

2. The maintenance lifting platform vehicle according to claim 1, characterized in that: The lifting mechanism is a scissor-type hydraulic lifting mechanism.

3. The maintenance lifting platform vehicle according to claim 1, characterized in that: A traction rod is provided at the front end of the bottom frame, and the traction rod is installed on the bottom frame through a hinge seat.

4. The maintenance lifting platform vehicle according to claim 1, characterized in that: The walking mechanism includes front wheels arranged on both sides of the front part of the base frame, rear wheels arranged on both sides of the rear part of the base frame and a transmission assembly for driving the rear wheels. The transmission assembly includes an axle connecting the two rear wheels, a first transmission rod arranged parallel to the axle, a second transmission rod perpendicular to the first transmission rod and a third transmission rod arranged above the first transmission rod and perpendicular to the second transmission rod. The first transmission rod and the axle are driven by a chain, the lower end of the second transmission rod and the first transmission rod are driven by a differential, one end of the third transmission rod and the upper end of the second transmission rod are driven by a gear set, and the other end of the third transmission rod is provided with a handwheel.

5. The maintenance lifting platform vehicle according to claim 4, characterized in that: The wheel axle is mounted on the bottom frame through a bearing seat, the first transmission rod is mounted on the bottom frame through a bearing seat, the second transmission rod is mounted on the bracket through a bearing seat, and the third transmission rod is mounted on the bracket through a bearing seat. The gear set consists of two mutually meshing crown gears, and the third transmission rod outputs power through a clutch.

6. The maintenance lifting platform vehicle according to claim 1, characterized in that: It is also equipped with lighting devices, insurance alarm safety devices and power supply devices.

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