Foldable upper bucket step ladder

Abstract

The utility model relates to a foldable upper bucket step ladder which is mainly suitable for the situation that the step ladder is high but the installation space is insufficient. The ladder comprises a fixed step ladder, a turnover step ladder, a pin shaft and a plug pin assembly, the turnover step ladder is rotationally installed on the fixed step ladder through the pin shaft, and the turnover step ladder and the fixed step ladder are fixed through the plug pin assembly; the fixed step ladder comprises a fixed plate, a fixed stand column, a fixed pedal and a fixed mounting groove, the turnover step ladder comprises a turnover stand column and a turnover pedal, the fixed plate is fixed with one end of the fixed stand column, the other end of the fixed stand column is fixed with the fixed pedal, the fixed mounting groove is formed in the fixed pedal, and the turnover stand column is fixed with the turnover pedal. One end of the overturning stand column is installed in the fixed installation groove through a pin shaft, the other end of the overturning stand column is fixed to the overturning pedal, the overturning pedal is provided with an overturning handle and an overturning cushion block, and the overturning cushion block makes contact with the fixed stand column.

Description

Technical Field

[0001] The utility model relates to a foldable upper step ladder, which is mainly suitable for situations where the step ladder is high but the installation space is insufficient. Background Art

[0002] With social development and technological advancement, the application areas of aerial work platforms are constantly expanding, including aerospace, shipbuilding, petroleum, wind power generation, highway and elevated bridge repair and maintenance, high-rise building facade repair and maintenance, traffic lights, urban surveillance, and outdoor advertising. Aerial work platforms also come in a variety of styles, including folding, straight-reaching, and hybrid. Among these various types, most aerial work platforms have high buckets, requiring a ladder for access. However, as the vehicle's functions expand, overhead space decreases, resulting in insufficient space for ladders. Utility Model Content

[0003] The purpose of the present utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a foldable upper bucket step ladder with a reasonable structural design, small space occupation, and the ability to be flipped over to increase the stepping height. The foldable upper bucket step ladder can be installed in a limited space and meet height requirements.

[0004] The technical solution adopted by the utility model to solve the above problems is: the foldable upper bucket step ladder has the following structural features: it includes a fixed step ladder, a flip step ladder, a pin shaft and a latch assembly, the flip step ladder is rotatably installed on the fixed step ladder through the pin shaft, and the flip step ladder and the fixed step ladder are fixed by the latch assembly; the fixed step ladder includes a fixed plate, a fixed column, a fixed pedal and a fixed installation groove, the flip step ladder includes a flip column and a flip pedal, the fixed plate is fixed to one end of the fixed column, the other end of the fixed column is fixed to the fixed pedal, a fixed installation groove is provided on the fixed pedal, one end of the flip column is installed in the fixed installation groove through the pin shaft, and the other end of the flip column is fixed to the flip pedal.

[0005] Furthermore, a flip handle is provided on the flip pedal.

[0006] Furthermore, a flip pad is provided on the flip pedal.

[0007] Furthermore, the flip pad is in contact with the fixed column.

[0008] Furthermore, the latch assembly includes a latch frame, a latch body, a first latch hole and a second latch hole, the latch frame is fixed on the fixed pedal, the latch body is arranged on the latch frame, the first latch hole and the second latch hole are both arranged on the flip column, and the latch body is inserted into the first latch hole or the second latch hole.

[0009] Furthermore, the first pin hole and the second pin hole are respectively located on both sides of the pin shaft.

[0010] Furthermore, a fixed reinforcement plate is fixed to the bottom of the fixed pedal.

[0011] Furthermore, a flip reinforcement plate is fixed to the bottom of the flip pedal.

[0012] Compared with the existing technology, the utility model has the following advantages: the fixed step ladder and the flip step ladder in the foldable upper bucket step ladder are connected by a pin shaft, the flip step ladder can be flipped 180 degrees, and the flip step ladder is fixed to the fixed step ladder by a latch assembly. When the upper bucket height is insufficient, the flip step ladder can be flipped over and fixed by the latch assembly to raise the stepping height. When not in use, the flip step ladder is flipped to the side below the fixed step ladder and fixed by the latch assembly to prevent the flip step ladder from shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the foldable upper bucket step ladder (in the state where the step ladder is raised after being flipped) according to an embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the foldable upper bucket step ladder (in the state of the step ladder being flipped and lowered) of an embodiment of the utility model.

[0015] Figure 3 The utility model is a schematic diagram of the structure of the foldable upper bucket step ladder in an upward view according to an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the main structure of the foldable upper bucket step ladder of an embodiment of the utility model.

[0017] In the figure: fixed step ladder 1, flip step ladder 2, pin shaft 3, latch assembly 4,

[0018] Fixed plate 1-1, fixed column 1-2, fixed pedal 1-3, fixed installation groove 1-4, fixed reinforcement plate 1-5,

[0019] Flip column 2-1, flip pedal 2-2, flip handle 2-3, flip pad 2-4, flip reinforcement plate 2-5,

[0020] Latch frame 4-1, latch body 4-2, first latch hole 4-3, second latch hole 4-4. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0022] Example

[0023] See also Figures 1 to 4 As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0024] The foldable upper bucket step ladder in this embodiment includes a fixed step ladder 1, a flip step ladder 2, a pin shaft 3 and a latch assembly 4. The flip step ladder 2 is rotatably installed on the fixed step ladder 1 through the pin shaft 3, and the flip step ladder 2 and the fixed step ladder 1 are fixed through the latch assembly 4.

[0025] The fixed step ladder 1 in this embodiment includes a fixed plate 1-1, a fixed column 1-2, a fixed pedal 1-3 and a fixed mounting groove 1-4, and a fixed reinforcement plate 1-5 is fixed to the bottom of the fixed pedal 1-3. The flip step ladder 2 includes a flip column 2-1 and a flip pedal 2-2, and a flip reinforcement plate 2-5 is fixed to the bottom of the flip pedal 2-2.

[0026] The fixed plate 1-1 in this embodiment is fixed to one end of the fixed column 1-2, the other end of the fixed column 1-2 is fixed to the fixed pedal 1-3, the fixed pedal 1-3 is provided with a fixed installation groove 1-4, one end of the flip column 2-1 is installed in the fixed installation groove 1-4 through a pin shaft 3, the other end of the flip column 2-1 is fixed to the flip pedal 2-2, the flip pedal 2-2 is provided with a flip handle 2-3 and a flip pad 2-4, and the flip pad 2-4 is in contact with the fixed column 1-2.

[0027] The latch assembly 4 in this embodiment includes a latch frame 4-1, a latch body 4-2, a first latch hole 4-3 and a second latch hole 4-4. The latch frame 4-1 is fixed on the fixed pedal 1-3, the latch body 4-2 is arranged on the latch frame 4-1, the first latch hole 4-3 and the second latch hole 4-4 are both arranged on the flip column 2-1, and the first latch hole 4-3 and the second latch hole 4-4 are respectively located on both sides of the pin shaft 3, and the latch body 4-2 is inserted into the first latch hole 4-3 or the second latch hole 4-4.

[0028] Specifically, the foldable upper bucket step ladder is installed in the limited space of the aerial vehicle through the fixing plate 1-1. When the operator needs to enter the working bucket and the height is not high enough, the flip step ladder 2 can be rotated 180 degrees along the pin shaft 3 and the latch body 4-2 can be inserted into the first latch hole 4-3 (as shown in FIG. Figure 1 As shown) to raise the stepping height, on the contrary, if there is no need to increase the height of the upper bucket step ladder, the latch body 4-2 can be inserted into the second latch hole 4-4 (as shown Figure 2 (as shown) to prevent the flip step ladder 2 from shaking.

[0029] The foldable upper bucket step ladder is secured to the vehicle via a fixed plate 1-1. A fixed reinforcement plate 1-5 ensures sufficient strength for the fixed step 1-3. A pin 3 passes through the fixed step 1-3 and connects to the tilting column 2-1. The tilting reinforcement plate 2-5 ensures sufficient strength for the tilting step 2-2. The tilting handle 2-3 facilitates operation of the tilting step 2-2. The tilting pad 2-4 prevents the tilting step 2-2 from colliding with the fixed column 1-2 during rotation, potentially damaging the paint. This foldable upper bucket step ladder takes up little space, has a high step height, and can be used normally when not in the tilting position.

[0030] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is merely an example of the structure of the utility model. Any equivalent changes or simple changes made based on the structure, features and principles described in the concept of the utility model patent are included in the scope of protection of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should fall within the scope of protection of the utility model.

Claims

1. A foldable upper bucket ladder, characterized by: The invention comprises a fixed step ladder (1), a reversible step ladder (2), a pin shaft (3) and a latch assembly (4); the reversible step ladder (2) is rotatably mounted on the fixed step ladder (1) via the pin shaft (3); the reversible step ladder (2) and the fixed step ladder (1) are fixed via the latch assembly (4); the fixed step ladder (1) comprises a fixed plate (1-1), a fixed column (1-2), a fixed pedal (1-3) and a fixed installation groove (1-4); the reversible step ladder (2) comprises a reversible column (2-1) and a reversible pedal (2-2); the fixed plate (1-1) is fixed to one end of the fixed column (1-2); the other end of the fixed column (1-2) is fixed to the fixed pedal (1-3); a fixed installation groove (1-4) is provided on the fixed pedal (1-3); one end of the reversible column (2-1) is mounted in the fixed installation groove (1-4) via the pin shaft (3); the other end of the reversible column (2-1) is fixed to the reversible pedal (2-2).

2. The foldable upper bucket step ladder according to claim 1, characterized in that: The flip pedal (2-2) is provided with a flip handle (2-3).

3. The foldable upper bucket step ladder according to claim 1, characterized in that: A flip pad (2-4) is provided on the flip pedal (2-2).

4. The foldable upper bucket step ladder according to claim 3, characterized in that: The flipping pad (2-4) is in contact with the fixed column (1-2).

5. The foldable upper bucket step ladder according to claim 1, characterized in that: The latch assembly (4) comprises a latch frame (4-1), a latch body (4-2), a first latch hole (4-3) and a second latch hole (4-4); the latch frame (4-1) is fixed on the fixed pedal (1-3); the latch body (4-2) is arranged on the latch frame (4-1); the first latch hole (4-3) and the second latch hole (4-4) are both arranged on the flip column (2-1); and the latch body (4-2) is inserted into the first latch hole (4-3) or the second latch hole (4-4).

6. The foldable upper bucket step ladder according to claim 5, characterized in that: The first pin hole (4-3) and the second pin hole (4-4) are respectively located on both sides of the pin shaft (3).

7. The foldable upper bucket step ladder according to claim 1, characterized in that: A fixed reinforcement plate (1-5) is fixed to the bottom of the fixed pedal (1-3).

8. The foldable upper bucket step ladder according to claim 1, characterized in that: A flip reinforcement plate (2-5) is fixed to the bottom of the flip pedal (2-2).

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