Three-folding ladder for vehicle

Abstract

The utility model discloses a three-folding ladder for a vehicle. The three-folding ladder is characterized by comprising a first ladder assembly, a second ladder assembly and a third ladder assembly, the upper end of the second ladder assembly is hinged to the lower end of the first ladder assembly, so that the second ladder assembly can rotate relative to the back face of the first ladder assembly, and a first unfolding position where the front face of the first ladder assembly is connected with the front face of the second ladder assembly and a first folding position where the second ladder assembly is folded on the back face of the first ladder assembly are formed. The upper end of the third ladder assembly is hinged to the lower end of the second ladder assembly, so that the third ladder assembly can rotate relative to the back face of the second ladder assembly, and a second unfolding position where the front face of the second ladder assembly is connected with the front face of the third ladder assembly and a second folding position where the third ladder assembly is folded on the back face of the second ladder assembly are formed. According to the utility model, the loading and unloading convenience of goods on a vehicle can be obviously improved.

Description

Technical Field

[0001] The utility model relates to the field of vehicle tools, in particular to a three-fold ladder for a vehicle. Background Art

[0002] Vehicle folding ladders are mainly used for loading and unloading goods on vehicles. In order to facilitate storage, most of them are foldable structures.

[0003] Existing foldable vehicle ladders on the market have several issues: 1. They are essentially foldable, so even when folded, they are still too long, making them difficult to store in a vehicle. 2. When unfolded, they form steps for users to climb, but these steps are only for users to climb up and down, and cannot be used by trailers or other utility vehicles, causing inconvenience when loading or unloading materials. Therefore, current foldable vehicle ladders require further improvement. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a three-fold ladder for a vehicle, which can significantly improve the convenience of loading and unloading cargo on a vehicle.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A three-fold ladder for a vehicle is characterized by comprising a first ladder frame, a second ladder frame and a third ladder frame;

[0007] The upper end of the second ladder frame is hingedly connected to the lower end of the first ladder frame, so that the second ladder frame can rotate relative to the back of the first ladder frame to form a first deployed position in which the front of the first ladder frame is connected to the front of the second ladder frame and a first stacked position in which the second ladder frame is stacked on the back of the first ladder frame;

[0008] The upper end of the third ladder frame is hinged to the lower end of the second ladder frame, so that the third ladder frame can rotate relative to the back of the second ladder frame to form a second unfolded position in which the front of the second ladder frame is connected to the front of the third ladder frame and a second overlapped position in which the third ladder frame is overlapped on the back of the second ladder frame.

[0009] Preferably, the first ladder frame, the second ladder frame and the third ladder frame each include support beams on both sides and support plates located between the two support beams and arranged along the length direction of the support beams.

[0010] Preferably, the upper surface of the support plate is flush with the upper surface of the support beam, so that the front surfaces of the first ladder rack, the second ladder rack and the third ladder rack form a planar structure.

[0011] Preferably, the first ladder frame and the second ladder frame, as well as the second ladder frame and the third ladder frame, are connected via a hinge assembly, wherein the hinge assembly comprises a first hinge plate, a second hinge plate and a hinge bolt;

[0012] Among them, the first hinge plate and the second hinge plate are both L-shaped structures, including a mounting plate and a connecting plate. The mounting plates in the first hinge plate and the second hinge plate are respectively fixed on two adjacent support beams, and the connecting plates in the first hinge plate and the second hinge plate correspond to each other and are used for inserting the hinge bolts.

[0013] Preferably, a handle for easy taking is provided between the two sets of hinged components of the first ladder frame and the second ladder frame.

[0014] Preferably, both ends of the handle are respectively plugged into two hinge bolts of two sets of hinge assemblies connected to the first ladder frame and the second ladder frame.

[0015] Preferably, a transition plate capable of being connected to a vehicle is provided at the upper end of the first ladder frame, and the rear ends of the two support beams in the third ladder frame are inclined.

[0016] Preferably, a positioning chain is provided at the upper end of the first ladder frame.

[0017] The advantages of the utility model are:

[0018] 1. The three-fold ladder can be folded into three equal parts. Compared with folding in half, it can further shorten the length of the ladder, making it easier to store and transport.

[0019] 2. The front of each ladder is a flat structure. Therefore, when the three ladders are in the unfolded position, a flat surface is formed, which can be used for operators to move around and for transport vehicles to move, thereby improving the convenience of cargo handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An exploded view of the three-fold vehicle ladder provided in this embodiment;

[0021] Figure 2 This is an expanded view of the three-fold vehicle ladder provided in this embodiment;

[0022] Figure 3 This is a folding diagram of the three-fold vehicle ladder provided in this embodiment. DETAILED DESCRIPTION

[0023] Combine Figures 1 to 3 The utility model of the three-fold vehicle ladder is further described.

[0024] A three-fold ladder for a vehicle is characterized by comprising a first ladder frame 1, a second ladder frame 2 and a third ladder frame 3.

[0025] The upper end of the second ladder frame 2 is hinged to the lower end of the first ladder frame 1, allowing the second ladder frame 2 to rotate relative to the back of the first ladder frame 1, forming a first deployed position in which the front of the first ladder frame 1 is connected to the front of the second ladder frame 2, and a first stacked position in which the second ladder frame 2 is superimposed on the back of the first ladder frame 1. The upper end of the third ladder frame 3 is hinged to the lower end of the second ladder frame 2, allowing the third ladder frame 3 to rotate relative to the back of the second ladder frame 2, forming a second deployed position in which the front of the second ladder frame 2 is connected to the front of the third ladder frame 3, and a second stacked position in which the third ladder frame 3 is superimposed on the back of the second ladder frame 2.

[0026] Specifically, the first ladder frame 1, the second ladder frame 2, and the third ladder frame 3 each include support beams 11 on both sides and support plates 12 located between the two support beams 11 and arranged along the length of the support beams 11. The support beams 11 and support plates 12 are integrally formed to ensure the overall structural strength of the ladder frame.

[0027] The support beam 11 is a plate structure, and its surface is perpendicular to the extension direction of the support plate 12. This structure can significantly improve the load-bearing capacity of each ladder frame.

[0028] The upper surface of the support plate 12 is flush with the upper surface of the support beam 11, so that the front of the first ladder frame 1, the second ladder frame 2 and the third ladder frame 3 form a planar structure, allowing the shipping tool to move on the front of the ladder frame, thereby improving the convenience of loading and unloading goods on the vehicle.

[0029] In order to reduce the weight of the three-fold ladder as a whole, a slot 8 is formed on each support plate 12 .

[0030] The first ladder frame 1 and the second ladder frame 2, as well as the second ladder frame 2 and the third ladder frame 3, are connected by two left and right sets of hinge assemblies 6. Each set of hinge assemblies 6 includes a first hinge plate 61, a second hinge plate 62, and a hinge bolt 63. The first hinge plate 61 and the second hinge plate 62 are both L-shaped structures, including a mounting plate 611 and a connecting plate 612. The mounting plates 611 of the first hinge plate 61 and the second hinge plate 62 are respectively fixed to two adjacent support beams 11 by bolts, and the connecting plates 612 of the first hinge plate 61 and the second hinge plate 62 correspond to each other and are inserted into the hinge bolt 63. Specifically, as for the hinge structure between the first ladder frame 1 and the second ladder frame 2, the left and right sets of hinge assemblies 6 are provided at the lower end of the first ladder frame 1 and the upper end of the second ladder frame 2. In each set of hinged components 6, the mounting plate 611 in the first hinged plate 61 is fixed to the outer side wall of the lower end of the support beam 11 of the first ladder frame 1 by bolts, and the mounting plate 611 in the second hinged plate 62 is fixed to the inner side wall of the upper end of the support beam 11 of the second ladder frame 2 by bolts. Then the connecting plate 612 in the first hinged plate 61 and the connecting plate 612 in the second hinged plate 62 are partially overlapped for the hinge bolt 63 to be inserted and then the bolts are tightened to complete the hinge.

[0031] Based on this hinged structure, when the first and second ladder frames 1, 2 are in the first deployed position, the lower end 14 of the support beam 11 in the first ladder frame 1 abuts the upper end 21 of the support beam 11 in the second ladder frame 2, placing the front faces of the first and second ladder frames 1, 2 in a flat, connected state, capable of bearing gravity from top to bottom. When the second ladder frame 2 rotates 180° from the first deployed position to the first folded position, the first and second ladder frames 1 overlap, while the back faces of the first ladder frame 1 are separated from the back faces of the second ladder frame 2, creating a space 9 for the folded third ladder frame 3. Therefore, when the three-fold ladder is in the folded position, the back face of the first ladder frame 1 abuts the front face of the third ladder frame 3, and the back face of the third ladder frame 3 abuts the back face of the second ladder frame 2, giving the three-fold ladder a neat appearance when folded and facilitating storage. Furthermore, the entire three-fold ladder can be easily lifted using the handle 7.

[0032] A handle 7 is provided between the two hinged assemblies 6 of the first and second ladder frames 1, 2 for easy access. Specifically, the handle 7 is a tubular structure, with its ends respectively inserted into two hinge pins 63 of the two hinged assemblies 6 connecting the first and second ladder frames 1, 2. When the tri-fold ladder is in the folded state, the first, second, and third ladder frames 1, 2, and 3 are in close contact with each other, so when the handle 7 is used to lift the ladder, the three folds will not fall apart.

[0033] A transition plate 5 is provided at the upper end of the first ladder frame 1, allowing it to be attached to a vehicle. The rear ends of the two support beams 11 in the third ladder frame 3 are angled 31 to facilitate placement on the ground. This structure allows the unfolded tri-fold ladder to effectively connect with the ground and the vehicle, facilitating the transfer of the transport vehicle between the ground and the vehicle.

[0034] A positioning chain 4 is provided at the upper end of the first ladder frame 1. One end of the chain 4 is fixed to the upper end of one of the support beams 11 of the first ladder frame 1, and the other end has a hook that can be hooked to the upper end of the other support beam 11 to tie the upper end of the tri-fold ladder to the vehicle for improved stability.

[0035] During actual use, the three-fold ladder can be folded into three equal parts. Compared with folding in half, the length of the ladder can be further shortened, making it easier to store and transport. The front of each ladder frame is a flat structure, so when all three ladder frames are in the unfolded position, a flat surface is formed, which can be used for operators to move around and for consignment vehicles to move, thereby improving the convenience of cargo handling.

[0036] Unless otherwise specified, in this utility model, if there are terms such as "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationships, they are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationships in this utility model are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can understand the specific meanings of the above terms in conjunction with the accompanying drawings and according to specific circumstances.

[0037] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this utility model should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A three-fold ladder for a vehicle, characterized by: including a first ladder rack, a second ladder rack and a third ladder rack; The upper end of the second ladder frame is hingedly connected to the lower end of the first ladder frame, so that the second ladder frame can rotate relative to the back of the first ladder frame to form a first deployed position in which the front of the first ladder frame is connected to the front of the second ladder frame and a first stacked position in which the second ladder frame is stacked on the back of the first ladder frame; The upper end of the third ladder frame is hinged to the lower end of the second ladder frame, so that the third ladder frame can rotate relative to the back of the second ladder frame to form a second unfolded position in which the front of the second ladder frame is connected to the front of the third ladder frame and a second overlapped position in which the third ladder frame is overlapped on the back of the second ladder frame.

2. The three-fold vehicle ladder according to claim 1, characterized in that: The first ladder frame, the second ladder frame and the third ladder frame each include support beams on both sides and support plates located between the two support beams and arranged along the length direction of the support beams.

3. The three-fold ladder for vehicle according to claim 2, characterized in that: The upper surface of the support plate is flush with the upper surface of the support beam, so that the front surfaces of the first ladder rack, the second ladder rack and the third ladder rack form a planar structure.

4. The three-fold ladder for vehicle according to claim 2, characterized in that: The first ladder frame and the second ladder frame, as well as the second ladder frame and the third ladder frame, are connected via a hinge assembly, wherein the hinge assembly includes a first hinge plate, a second hinge plate and a hinge bolt; Among them, the first hinge plate and the second hinge plate are both L-shaped structures, including a mounting plate and a connecting plate. The mounting plates in the first hinge plate and the second hinge plate are respectively fixed on two adjacent support beams, and the connecting plates in the first hinge plate and the second hinge plate correspond to each other and are used for inserting the hinge bolts.

5. The three-fold ladder for vehicle according to claim 4, characterized in that: A handle for easy taking is provided between the two hinged assemblies of the first ladder frame and the second ladder frame.

6. The three-fold vehicle ladder according to claim 5, characterized in that: The two ends of the handle are respectively plugged into two hinge bolts of two sets of hinge assemblies connected to the first ladder frame and the second ladder frame.

7. The three-fold ladder for vehicle according to claim 1 is characterized in that: A transition plate that can be connected to a vehicle is provided at the upper end of the first ladder frame, and rear ends of two support beams in the third ladder frame are inclined.

8. The three-fold ladder for vehicle according to claim 1, characterized in that: A positioning chain is provided at the upper end of the first ladder frame.

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