CN-224214110-U - Aircraft maintenance work ladder

CN224214110UCN 224214110 UCN224214110 UCN 224214110UCN-224214110-U

Abstract

The utility model relates to the technical field of working ladders, in particular to an aircraft maintenance working ladder; the aircraft maintenance platform can meet maintenance requirements of different heights around an aircraft, is more stable when being used as a maintenance platform, comprises a working platform, a supporting leg assembly, a first ladder frame and a second ladder frame, wherein the supporting leg assembly and the first ladder frame are respectively and relatively arranged on two sides of the bottom of the working platform, an armrest frame is fixedly arranged at the top of the working platform, an L-shaped connecting piece is fixedly arranged on the armrest frame, the top of the second ladder frame is hinged with the L-shaped connecting piece, a first connecting supporting piece which is detachably connected with the supporting leg assembly is arranged on the first ladder frame, the first connecting supporting piece comprises a rod body fixedly connected with the second ladder frame and a first elastic clamping piece fixedly arranged on the rod body, the first elastic clamping piece comprises an elastic ring clamp and an opening arranged on the elastic ring clamp, the first ladder frame and the second ladder frame respectively comprise a rod frame and a plurality of first steps arranged on the rod frame, and the back of the first steps on the second ladder frame are provided with second steps.

Inventors

SHEN JIMING
YANG KUI
WANG JING
YAO YUBAO
ZHANG ZHENXUAN
WANG XIAOHUI
Ji Youqiao
YAN MAOTONG

Assignees

山东交通职业学院
山东天鸟航空科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250728

Claims (8)

1. The utility model provides an aircraft maintenance work ladder, its characterized in that, includes work platform (1), landing leg subassembly, first ladder frame (2) and second ladder frame (3), landing leg subassembly and first ladder frame (2) are installed in work platform (1) bottom both sides relatively respectively, work platform (1) top fixed mounting has handrail frame (4), fixed mounting has L type connecting piece (5) on handrail frame (4), the top and the L type connecting piece (5) of second ladder frame (3) are articulated, install the first connecting support piece of being connected with the landing leg subassembly can be dismantled on first ladder frame (2).
2. Aircraft maintenance working ladder according to claim 1, characterized in that the first connecting strut comprises a rod body (6) fixedly connected with the second ladder frame (3) and a first elastic clamping piece fixedly mounted on the rod body (6), the first elastic clamping piece comprising an elastic ring clamp (7) and an opening (8) arranged on the elastic ring clamp (7).
3. Aircraft maintenance working ladder according to claim 1, characterized in that the first ladder frame (2) and the second ladder frame (3) each comprise a bar frame (9) and a plurality of first steps (10) mounted on the bar frame (9), the first steps (10) on the second ladder frame (3) being back mounted with second steps (11).
4. An aircraft maintenance working ladder according to claim 3, further comprising a connecting rod (12) and a limit bolt (13), wherein one end of the second step (11) is hinged with a corresponding first step (10) on the second ladder frame (3), the other end of the second step (11) is hinged with the connecting rod (12), a carriage (14) is fixedly arranged on the first step (10) on the second ladder frame (3), an arc-shaped sliding groove (15) is arranged on the carriage (14), the limit bolt (13) penetrates through the arc-shaped sliding groove (15) and is screwed on the first step (10), and the first step (10) and the second step (11) are locked through the limit bolt (13).
5. The aircraft maintenance working ladder according to claim 4, characterized in that a second connecting support piece is mounted on the second ladder frame (3), the second connecting support piece comprises a second elastic clamping piece and a telescopic adjusting piece, the second elastic clamping piece and the telescopic adjusting piece have the same structure as the first elastic clamping piece, the telescopic adjusting piece comprises an internal thread cylinder (16) and adjusting screws (17) which are screwed on two sides of the internal thread cylinder (16), and the two adjusting screws (17) are hinged with the second ladder frame (3) and the second elastic clamping piece respectively.
6. Aircraft maintenance ladder according to claim 1, characterized in that the leg assembly comprises a leg frame (18) and a base (19) mounted to the bottom of the leg frame (18).
7. Aircraft maintenance working ladder according to claim 6, characterized in that the base (19) is screw-mounted with a lifting screw (20), the bottom of the lifting screw (20) being mounted with a universal wheel (21).
8. An aircraft maintenance ladder according to claim 3, characterised in that the working platform (1), the first step (10) and the second step (11) are each provided with a non-slip protrusion (22).

Description

Aircraft maintenance work ladder Technical Field The utility model relates to the technical field of working ladders, in particular to an aircraft maintenance working ladder. Background The aircraft overhaul maintenance is a key link for ensuring aviation safety, and relates to system inspection, fault removal and preventive maintenance, and because of the large size of the aircraft, a working ladder is mostly adopted as a climbing tool in the maintenance process. A foldable aircraft maintenance working ladder is disclosed in chinese patent application publication No. CN 216197791U. The folding type working ladder comprises a ladder frame, a working platform and a supporting leg assembly, wherein the ladder frame is connected to one side of the bottom of the working platform, the supporting leg assembly is rotatably connected to the other side of the working platform, the supporting leg assembly and the ladder frame are arranged oppositely and are supported on the ground, the working ladder can be folded quickly without disassembling the ladder frame, occupied volume is reduced, and operation is simple. However, the device still has the defects that when the maintenance and overhaul operation is carried out on the aircraft, overhaul and maintenance are required to be carried out on different positions around the aircraft, the height position of the operating platform of the device is fixed, the overhaul requirement of the higher position around the aircraft is difficult to meet, and the placement stability of the working ladder when the working platform is operated is required to be further improved. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the aircraft maintenance working ladder which meets the maintenance requirements of different heights around an aircraft and is more stable when used as a maintenance platform. In order to achieve the purpose, the technical scheme is that the aircraft maintenance working ladder comprises a working platform, a supporting leg assembly, a first ladder frame and a second ladder frame, wherein the supporting leg assembly and the first ladder frame are respectively and oppositely arranged at two sides of the bottom of the working platform, an armrest frame is fixedly arranged at the top of the working platform, an L-shaped connecting piece is fixedly arranged on the armrest frame, the top of the second ladder frame is hinged with the L-shaped connecting piece, and a first connecting supporting piece detachably connected with the supporting leg assembly is arranged on the first ladder frame. Further, when the second ladder frame is used as a climbing tool to the working platform, the first connecting support piece connects the second ladder frame and the bottom of the supporting leg component into a whole, and the second ladder frame and the supporting leg component are in parallel at the moment. Preferably, the first connecting support piece comprises a rod body fixedly connected with the second ladder frame and a first elastic clamping piece fixedly arranged on the rod body, the first elastic clamping piece comprises an elastic ring clamp and an opening arranged on the elastic ring clamp, the elastic ring clamp is further made of a plastic ring or a metal ring with certain plasticity and toughness, the inner diameter of the elastic ring clamp on the first connecting support piece is matched with the outer diameter of the handrail frame, and the width of the opening is smaller than the diameter of the handrail frame. Preferably, the first ladder frame and the second ladder frame comprise a rod frame and a plurality of first steps arranged on the rod frame, the second steps are arranged on the back of the first steps on the second ladder frame, further, the number of the second steps in the scheme is three, the number of the first steps in the scheme cannot be understood as limiting, the number of the first steps can be properly increased or decreased according to the height of the working platform, and the intervals among the plurality of groups of the second steps are equidistant. Preferably, the device also comprises a connecting rod and a limit bolt, one end of the second step is hinged with the corresponding first step on the second ladder frame, the other ends of the plurality of groups of second steps are all hinged with the connecting rod, the first step on the second ladder frame is fixedly provided with a sliding frame, the sliding frame is provided with an arc-shaped sliding groove, the limit bolt penetrates through the arc-shaped sliding groove and is screwed on the first step, and the first step and the second step are locked through the limit bolt. Further, the number of first steps and second steps in the drawings of the scheme is three, and the number of the first steps and the second steps can not be limited, so that the number of the first steps and the number of the second steps can be appropriately increa