A work ladder for aircraft maintenance

Abstract

The utility model proposes a work ladder for aircraft maintenance, comprising: a front support, a rear support, a platform, a pair of first connecting rods, a pair of second connecting rods and a pair of third connecting rods; the front support is provided with a plurality of pedals; the rear side of the lower end of the rear support is provided with a pair of rollers, and the wheel surface of the rollers is higher than the ground; the front end of the platform is hinged to the front support, and the rear end of the platform is hinged to the rear support; the two first connecting rods are respectively detachably connected between the front support and the two sides of the platform; the two second connecting rods are respectively detachably connected between the rear support and the platform; the two third connecting rods are detachably connected between the lower end of the front support and the lower end of the rear support. The work ladder for aircraft maintenance of the utility model can be folded and unfolded, which is convenient for storage and transportation, and does not affect the use. It can also be moved by rollers, and can also be stably supported by the front support and the rear support.

Description

Technical Field

[0001] The utility model belongs to the field of aircraft maintenance tools, in particular to a working ladder for aircraft maintenance. Background Art

[0002] When performing maintenance on an aircraft, some aircraft have a high fuselage, which requires a work ladder with a construction platform to raise the height of the workers. Some work ladders have rollers at the bottom, which makes them easy to move, but they are prone to shaking and instability; some work ladders do not have rollers on the four supporting feet, which can provide stable support but are not easy to move. In addition, the work ladder has a platform, which occupies a large area and is inconvenient to store and transport. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a working ladder for aircraft maintenance, so as to overcome the above problems or at least partially solve or alleviate the above problems.

[0004] The utility model provides a working ladder for aircraft maintenance, comprising:

[0005] A front support, wherein a plurality of pedals are arranged on the front support;

[0006] A rear support, wherein a pair of rollers are arranged at the rear side of the lower end of the rear support, and the wheel surfaces of the rollers are higher than the ground;

[0007] A platform, wherein the front end of the platform is hinged to the front support, and the rear end of the platform is hinged to the rear support;

[0008] A pair of first connecting rods, wherein the two first connecting rods are detachably connected between the front support and the two sides of the platform;

[0009] a pair of second connecting rods, wherein the two second connecting rods are respectively detachably connected between the rear support and the platform;

[0010] A pair of third connecting rods, two of the third connecting rods are detachably connected between the lower end of the front support and the lower end of the rear support.

[0011] The utility model also has the following optional features.

[0012] Optionally, a pair of fourth connecting rods are further included, and the two fourth connecting rods are respectively detachably connected between the middle part of the front support and the lower end of the rear support.

[0013] Optionally, two hinged plates are arranged between the front support and the platform, the two hinged plates are respectively connected to the front support and the platform, the front ends of the two hinged plates are hinged, the rear ends of the two hinged plates are provided with connecting holes, and the two hinged plates are detachably connected by screws passing through the connecting holes.

[0014] Optionally, a bottom plate is connected to the lower end of the rear support, and the roller is connected to the upper side of the bottom plate and extends toward the rear side of the rear support.

[0015] Optionally, two sides of the front support are parallel, and a lower width of the rear support is greater than a width of the front support.

[0016] Beneficial effects of the utility model:

[0017] The aircraft maintenance work ladder of the utility model is hingedly connected to a platform through a front support and a rear support, and is detachably connected between the front support, the rear support and the platform through a pair of first connecting rods, a pair of second connecting rods and a pair of third connecting rods, so that the work ladder can be folded and unfolded, which is convenient for the storage and transportation of the work ladder without affecting the use. In addition, a pair of rollers just off the ground are arranged on the rear side of the lower end of the rear support. After the front support is lifted, the rollers at the lower end of the rear support can contact the ground, and the work ladder can be moved by the rollers. After the front support is lowered, the rollers on the rear side of the rear support are off the ground, which can ensure that the work ladder is not easy to slip during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the aircraft maintenance work ladder of the utility model;

[0019] Figure 2 It is a top view of the aircraft maintenance work ladder of the utility model;

[0020] Figure 3 It is a left side view of the aircraft maintenance work ladder of the utility model;

[0021] Figure 4 yes Figure 2 The folding structure diagram of the aircraft maintenance work ladder;

[0022] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0023] Figure 6 yes Figure 3 Enlarged view of point B in the middle.

[0024] In the above figure: 1. front support; 2. pedal; 3. rear support; 4. roller; 5. platform; 6. first connecting rod; 7. second connecting rod; 8. third connecting rod; 9. fourth connecting rod; 10. hinge plate; 11. bottom plate; 12. hinge seat.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; DETAILED DESCRIPTION

[0026] Example 1

[0027] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the utility model proposes a work ladder for aircraft maintenance, comprising: a front support 1, a rear support 3, a platform 5, a pair of first connecting rods 6, a pair of second connecting rods 7 and a pair of third connecting rods 8; a plurality of pedals 2 are arranged on the front support 1; a pair of rollers 4 are arranged on the rear side of the lower end of the rear support 3, and the wheel surface of the rollers 4 is higher than the ground; the front end of the platform 5 is hinged to the front support 1, and the rear end of the platform 5 is hinged to the rear support 3; two first connecting rods 6 are respectively detachably connected between the front support 1 and the two sides of the platform 5; two second connecting rods 7 are respectively detachably connected between the rear support 3 and the platform 5; two third connecting rods 8 are detachably connected between the lower end of the front support 1 and the lower end of the rear support 3.

[0028] The front support 1 is connected to the pedal 2 between the metal pipes on both sides to form a ladder; the upper end of the front support 1 is hinged with a platform 5 as a construction platform, the rear support 3 is hinged on the rear side of the platform 5, and supports the platform 5 together with the front support 1, and the first connecting rod 6 and the second connecting rod 7 are respectively connected between the middle of the platform 5 and the front support 1 and the rear support 3, which can fix the expansion angle between the platform 5 and the front support 1 and the rear support 3 to ensure that the platform 5 is in a horizontal state, and the third connecting rod 8 is connected between the lower ends of the front support 1 and the rear support 3, which can fix the expansion distance of the lower ends of the front support 1 and the rear support 3, and improve the structural strength of both. When the unfolded working ladder needs to be moved, it is only necessary to lift the front support 1 and tilt the rear support 3 backward, so that the wheel surface of the roller 4 on the rear side of the lower end of the rear support 3 touches the ground, and the entire working ladder can be moved by the roller 4. When storing or transporting, the first connecting rod 6, the second connecting rod 7 and the third connecting rod 8 can be removed, and then the front support 1, the platform 5 and the rear support 3 are folded up, which saves storage space and transportation space.

[0029] Example 2

[0030] refer to Figure 1 On the basis of Example 1, it further includes a pair of fourth connecting rods 9, and the two fourth connecting rods 9 are detachably connected between the middle part of the front support 1 and the lower end of the rear support 3.

[0031] The two ends of the fourth connecting rod 9 are respectively connected to the hinge seat 11 in the middle of the front support 1 and the hinge seat 11 at the lower end of the rear support 3, so as to strengthen the connection between the front support 1 and the rear support 3 and improve the structural stability of the working ladder.

[0032] Example 3

[0033] refer to Figure 4 and Figure 6On the basis of Example 1, two hinged plates 10 are arranged between the front support 1 and the platform 5, and the two hinged plates 10 are respectively connected to the front support 1 and the platform 5, the front ends of the two hinged plates 10 are hinged, and the rear ends of the two hinged plates 10 are provided with connecting holes, and are detachably connected by screws passing through the connecting holes.

[0034] The two hinged pieces 10 are welded to the sides of the front support 1 and the platform 5 respectively. The two hinged pieces 10 are hinged at one end and are provided with connecting holes at the other end. When the two hinged pieces 10 are put together, the two connecting holes are aligned. The two hinged pieces 10 are fixed together by screws or pins passing through the two connecting holes, so that the platform 5 and the front support 1 are in the unfolded state. By removing the screws or pins, the platform 5 and the front support 1 can be folded.

[0035] Example 4

[0036] refer to Figure 1 and Figure 4 On the basis of Example 1, the lower end of the rear support 3 is connected to a bottom plate 11 , and the roller 4 is connected to the upper side of the bottom plate 11 and extends to the rear side of the rear support 3 .

[0037] The lower end of the rear support 3 is connected to the base plate. When the work ladder is unfolded and used, the rear support 3 contacts the ground through the base plate 11. The roller 4 is connected to the upper side of the base plate 11 to ensure that the wheel surface of the roller 4 does not contact the ground and does not affect the friction between the rear support 3 and the ground.

[0038] Example 5

[0039] refer to Figure 2 , Figure 3 and Figure 5 On the basis of Example 1, the two sides of the front support 1 are parallel, and the lower width of the rear support 3 is greater than the width of the front support 1.

[0040] The lower width of the rear support 3 is greater than the width of the front support 1 , so that when folded, the front support 1 can be staggered with the hinge seat 12 on the rear support 3 , and the rear support 3 can also be staggered with the hinge seat 12 on the front support 1 .

[0041] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry, and are not described here one by one.

Claims

1. A working ladder for aircraft maintenance, characterized in that: include: A front support (1), wherein a plurality of pedals (2) are arranged on the front support (1); A rear support (3), wherein a pair of rollers (4) are arranged on the rear side of the lower end of the rear support (3), and the wheel surfaces of the rollers (4) are higher than the ground; A platform (5), wherein the front end of the platform (5) is hinged to the front support (1), and the rear end of the platform (5) is hinged to the rear support (3); a pair of first connecting rods (6), wherein the two first connecting rods (6) are respectively detachably connected between the front support (1) and the two sides of the platform (5); a pair of second connecting rods (7), wherein the two second connecting rods (7) are respectively detachably connected between the rear support (3) and the platform (5); a pair of third connecting rods (8), wherein the two third connecting rods (8) are detachably connected between the lower end of the front support (1) and the lower end of the rear support (3); Two hinged plates (10) are arranged between the front support (1) and the platform (5), and the two hinged plates (10) are respectively connected to the front support (1) and the platform (5), the front ends of the two hinged plates (10) are hinged, and the rear ends of the two hinged plates (10) are both provided with connection holes, and the two hinged plates (10) are detachably connected by screws passing through the connection holes.

2. The aircraft maintenance work ladder according to claim 1, characterized in that: It also comprises a pair of fourth connecting rods (9), wherein the two fourth connecting rods (9) are respectively detachably connected between the middle part of the front support (1) and the lower end of the rear support (3).

3. The aircraft maintenance work ladder according to claim 1, characterized in that: The lower end of the rear support (3) is connected to a bottom plate (11), and the roller (4) is connected to the upper side of the bottom plate (11) and extends toward the rear side of the rear support (3).

4. The aircraft maintenance work ladder according to claim 1, characterized in that: The two sides of the front support (1) are parallel, and the lower width of the rear support (3) is greater than the width of the front support (1).

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