Multifunctional folding ladder assembly for engineering

Abstract

The utility model discloses a multifunctional folding ladder assembly for engineering, and belongs to the technical field of engineering mechanical equipment. The multifunctional folding ladder assembly for engineering comprises a lower middle bracket, an upper middle bracket arranged at one end of the lower middle bracket, a lower end bracket arranged at the other end of the lower middle bracket, an upper end bracket arranged at one end, far away from the lower middle bracket, of the upper middle bracket, and an upper end bracket fixedly mounted on the lower middle bracket, the second fixing plate is arranged on the upper middle bracket and the upper end bracket; the fixing shaft is rotationally arranged on the first fixing plate and the second fixing plate; the fixing shaft penetrates through the first fixing plate and the second fixing plate; through cooperative use of the devices, the ladder assembly can be transformed into ladders in different shapes such as an A-shaped ladder, a rectangular ladder and a folding ladder by rotating the lower middle support, the upper middle support, the lower end support and the upper end support, the ladder assembly is suitable for different use scenes, and the use efficiency of the ladder in engineering is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery and equipment, in particular to a multifunctional folding ladder frame for engineering. Background Art

[0002] Ladders are an item that has existed since ancient times and are still used today. With the development and progress of society, the structure and materials of ladders have undergone many changes, and some new ladders have emerged. Among the existing ladders, there is a stretching ladder, in which the width of the upper ladder is equal to or less than the inner width of the lower ladder, and there is a guide device on the inside of the lower ladder, so that the upper ladder can only move up and down inside the lower ladder, but cannot be turned over.

[0003] Upon investigation, a Chinese utility model patent disclosed a foldable multifunctional ladder (publication number: CN207436893U), which consists of two parts: one is the ladder main body composed of several ladder units, and the other is the bracket part. In addition, rollers are installed on the lower end ladder unit. By changing the relative position of the bracket and the ladder main body through positioning pins, the ladder can be adjusted to three states: straight ladder, A-type ladder, and tightly folded.

[0004] In the above patent, the application range is wide and it can be used as a straight ladder or an A-type ladder. However, due to the changeable engineering environment, when used in engineering, due to the changeable engineering environment, it is necessary to use a variety of ladders of different shapes. The above patent can only change the two forms of A-type ladder and straight ladder. Therefore, when a ladder of other shapes is needed, it is necessary to replace it with another ladder, so the efficiency of using the ladder is not high.

[0005] Therefore, the utility model provides a multifunctional foldable ladder for engineering to solve the above problems. Utility Model Content

[0006] (1) Technical problems solved

[0007] The utility model provides a multifunctional folding ladder for engineering, aiming to solve the problems raised in the background technology.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a multifunctional foldable ladder for engineering use, comprising a lower intermediate bracket, an upper intermediate bracket arranged at one end of the lower intermediate bracket, a lower end bracket arranged at the other end of the lower intermediate bracket, an upper end bracket arranged at an end of the upper intermediate bracket away from the lower intermediate bracket, a plurality of pedals rotatably mounted between the two lower intermediate brackets, and a rotating mechanism arranged on the lower intermediate bracket and the upper intermediate bracket for rotational fixation;

[0010] The rotating mechanism includes a first fixed plate fixedly mounted on the lower intermediate bracket, the upper intermediate bracket and the lower end bracket, a second fixed plate fixedly mounted on the lower intermediate bracket, the upper intermediate bracket and the upper end bracket, and a fixed shaft rotatably mounted on the first fixed plate and the second fixed plate, and the fixed shaft passes through the first fixed plate and the second fixed plate.

[0011] As a preferred technical solution of the present application, one side of the lower middle bracket is rotatably connected to the first fixing rod, and one side of the lower end bracket is fixedly connected to the first fixing column.

[0012] As a preferred technical solution of the present application, a first fixing groove adapted to the first fixing column is provided on the first fixing rod, and a second fixing rod is rotatably connected to one side of the upper intermediate bracket.

[0013] As a preferred technical solution of the present application, a second fixing column is fixedly connected to one side of the upper bracket, and a second fixing groove adapted to the second fixing column is provided on the second fixing rod.

[0014] As a preferred technical solution of the present application, a third fixing column is fixedly connected to one side of the lower intermediate bracket, and a third fixing groove adapted to the third fixing column is provided on the second fixing rod.

[0015] As a preferred technical solution of the present application, universal wheels are rotatably connected to the two upper middle brackets, and fixed grooves for plugging the universal wheels are provided on the upper middle brackets.

[0016] (3) Beneficial effects

[0017] The utility model has a simple structure and is easy to use. By rotating the lower middle bracket, the upper middle bracket, the lower end bracket and the upper end bracket, the ladder rack can be transformed into ladders of different shapes such as A-shaped ladders, rectangular ladders and folding ladders. It is suitable for different application scenarios and improves the use efficiency of the ladder in engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a multifunctional folding ladder for engineering use;

[0019] Figure 2 This is a structural diagram of a multifunctional engineering folding ladder frame A-shaped ladder;

[0020] Figure 3 The schematic diagram of the structure of a multifunctional engineering folding ladder frame rectangular ladder;

[0021] Figure 4 It is a structural diagram of a multifunctional engineering folding ladder frame;

[0022] Figure 5 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0023] In the picture:

[0024] 1. Lower middle bracket; 2. Upper middle bracket; 3. Lower end bracket; 4. Upper end bracket; 5. Pedal; 6. First fixing plate; 7. Second fixing plate; 8. Fixed shaft; 9. First fixing rod; 10. First fixing column; 11. First fixing slot; 12. Second fixing rod; 13. Second fixing column; 14. Second fixing slot; 15. Third fixing slot; 16. Third fixing column; 17. Universal wheel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides a multifunctional folding ladder for engineering use, such as Figure 1 、 Figure 2 and Figure 5 As shown, the multifunctional folding ladder for engineering purposes includes a lower intermediate bracket 1, an upper intermediate bracket 2 arranged at one end of the lower intermediate bracket 1, a lower end bracket 3 arranged at the other end of the lower intermediate bracket 1, an upper end bracket 4 arranged at one end of the upper intermediate bracket 2 away from the lower intermediate bracket 1, a plurality of pedals 5 rotatably installed between the two lower intermediate brackets 1, and a rotating mechanism arranged on the lower intermediate bracket 1 and the upper intermediate bracket 2 for rotational fixation.

[0027] The rotating mechanism includes a first fixed plate 6 fixedly mounted on the lower intermediate bracket 1, the upper intermediate bracket 2 and the lower end bracket 3, a second fixed plate 7 fixedly mounted on the lower intermediate bracket 1, the upper intermediate bracket 2 and the upper end bracket 4, and a fixed shaft 8 rotatably mounted on the first fixed plate 6 and the second fixed plate 7, and the fixed shaft 8 passes through the first fixed plate 6 and the second fixed plate 7.

[0028] When the multifunctional engineering foldable ladder is in use, the initial state is a straight ladder. Due to the changeable environment in the project, different ladders are required. When a straight ladder is needed, the straight ladder is placed in a suitable place. When an A-shaped ladder is needed, the operator manually rotates the upper middle bracket 2, and the rotation of the upper middle bracket 2 drives the second fixed plate 7 to rotate until the top of the upper bracket 4 is moved to the same horizontal line as the bottom of the lower bracket 3, and the first fixed plate 6 and the second fixed plate 7 are connected by the fixed shaft 8 to prevent the lower middle bracket 1 and the upper middle bracket 2 from separating. Then, the top of the upper bracket 4 is moved to a suitable position with the bottom of the lower bracket 3 to form an A-shaped ladder. When a rectangular ladder is needed, the lower middle bracket 1 and the upper middle bracket 2 are fixed. First, rotate the lower bracket 3, and drive the first fixed plate 6 to rotate through the rotation of the lower bracket 3 until the lower bracket 3 is rotated to a vertical state with the lower middle bracket 1. When the ladder is lifted up, the second fixing plate 7 is rotated to prevent the lower bracket 3 and the upper bracket 4 from being separated from the lower bracket 1 and the upper bracket 2 respectively. Then, the lower bracket 3 and the upper bracket 4 are prevented from being on the ground. The ladder is rectangular. When not in use, the rotation of the upper bracket 4 first drives the second fixing plate 7 to rotate until the upper bracket 4 is rotated to a vertical position with the upper bracket 2, and then the lower bracket 3 is rotated to fit the lower bracket 1, and then the lower bracket 1 is rotated together with the lower bracket 3 to fit the upper bracket 2. Therefore, the ladder can change into multiple states. The staff works on the ladder through the pedals 5. The anti-skid plate provided on the pedals 5 can reduce the situation that the staff slips on the ladder, making it convenient to use in engineering.

[0029] Furthermore, in order to fix ladders of various shapes, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, one side of the lower middle bracket 1 is rotatably connected to the first fixing rod 9, and one side of the lower end bracket 3 is fixedly connected to the first fixing column 10.

[0030] The first fixing rod 9 is provided with a first fixing slot 11 adapted to the first fixing column 10 , and one side of the upper intermediate bracket 2 is rotatably connected to a second fixing rod 12 .

[0031] A second fixing column 13 is fixedly connected to one side of the upper bracket 4 , and a second fixing slot 14 adapted to the second fixing column 13 is formed on the second fixing rod 12 .

[0032] A third fixing column 16 is fixedly connected to one side of the lower intermediate bracket 1 , and a third fixing slot 15 adapted to the third fixing column 16 is formed on the second fixing rod 12 .

[0033] When the multifunctional engineering foldable ladder is in use, it is a straight ladder in the initial state. At this time, the first fixing rod 9 is fixed to the first fixing column 10 through the first fixing groove 11 provided thereon, and the second fixing rod 12 is fixed to the second fixing column 13 through the second fixing groove 14 provided thereon, so as to prevent the first fixing rod 9 and the second fixing rod 12 from shaking in the air during use. When the ladder is converted into an A-shaped ladder, after the A-shaped ladder is placed, the second fixing rod 12 is manually rotated and fixed to the third fixing column 16 through the third fixing groove 15 provided thereon. After the second fixing rod 12 is fixed to the third fixing column 16, the A-shaped ladder is A triangular stable state is formed to avoid the situation where the lower middle bracket 1 and the upper middle bracket 2 are simultaneously opened outward or retracted inward during use of the A-shaped ladder, thereby causing the A-shaped ladder to be unstable. When the ladder is converted into a rectangular ladder, after the rectangular ladder is placed, the first fixing rod 9 is rotated to be fixed to the first fixing column 10, and the second fixing rod 12 is rotated to be fixed to the second fixing column 13, to avoid the situation where the rectangular body becomes a parallelogram due to shaking. When the ladder is not in use, after the ladder is retracted, the second fixing rod 12 is rotated to be fixed to the second fixing column 13, and the position of the upper bracket 4 is restricted, so that the upper bracket 4 becomes a handle for pushing the ladder.

[0034] Furthermore, in order to facilitate the movement of the ladder when it is not in use, Figure 1 、 Figure 2 and Figure 4 As shown, the two upper middle brackets 2 are rotatably connected with universal wheels 17 , and the upper middle brackets 2 are provided with fixing grooves for the universal wheels 17 to be inserted into.

[0035] When the multifunctional foldable engineering ladder is in use and not in use, after the ladder is retracted, the second fixing rod 12 is rotated to be fixed to the second fixing column 13, the position of the upper bracket 4 is restricted, and the upper bracket 4 becomes a handle for pushing the ladder. The ladder is placed on the ground by rotating the universal wheel 17 installed on the upper middle bracket 2, and the ladder can be moved more conveniently by manually pushing the upper bracket 4 through the universal wheel 17.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional foldable ladder for engineering use, characterized by: The multifunctional foldable ladder for engineering purposes comprises a lower intermediate support (1), an upper intermediate support (2) arranged at one end of the lower intermediate support (1), a lower end support (3) arranged at the other end of the lower intermediate support (1), an upper end support (4) arranged at one end of the upper intermediate support (2) away from the lower intermediate support (1), a plurality of pedals (5) rotatably mounted between the two lower intermediate supports (1), and a rotating mechanism arranged on the lower intermediate support (1) and the upper intermediate support (2) for rotational fixation; The rotating mechanism comprises a first fixing plate (6) fixedly mounted on the lower intermediate bracket (1), the upper intermediate bracket (2) and the lower end bracket (3), a second fixing plate (7) fixedly mounted on the lower intermediate bracket (1), the upper intermediate bracket (2) and the upper end bracket (4), and a fixing shaft (8) rotatably mounted on the first fixing plate (6) and the second fixing plate (7), wherein the fixing shaft (8) passes through the first fixing plate (6) and the second fixing plate (7).

2. A multifunctional foldable engineering ladder according to claim 1, characterized in that: One side of the lower middle bracket (1) is rotatably connected to a first fixing rod (9), and one side of the lower end bracket (3) is fixedly connected to a first fixing column (10).

3. The multifunctional foldable engineering ladder according to claim 2, characterized in that: The first fixing rod (9) is provided with a first fixing groove (11) adapted to the first fixing column (10), and one side of the upper intermediate bracket (2) is rotatably connected to a second fixing rod (12).

4. The multifunctional foldable engineering ladder according to claim 3, characterized in that: A second fixing column (13) is fixedly connected to one side of the upper end bracket (4), and a second fixing slot (14) adapted to the second fixing column (13) is provided on the second fixing rod (12).

5. The multifunctional foldable engineering ladder according to claim 4, characterized in that: A third fixing column (16) is fixedly connected to one side of the lower intermediate bracket (1), and a third fixing slot (15) adapted to the third fixing column (16) is provided on the second fixing rod (12).

6. The multifunctional foldable engineering ladder according to claim 5, characterized in that: Universal wheels (17) are rotatably connected to the two upper intermediate brackets (2), and fixed grooves for plugging the universal wheels (17) are provided on the upper intermediate brackets (2).

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