Fixing device for boarding ladder with handrail

Abstract

The utility model discloses a fixing device for a boarding ladder with a handrail. The fixing device comprises an upper plate assembly, a lower plate assembly, a rear sealing plate, a door frame assembly and a fixing piece. The upper plate assembly and the lower plate assembly are used for supporting the upper portion and the lower portion of the boarding ladder respectively. The rear sealing plate is connected to the rear portions of the upper plate and the lower plate and used for limiting the rear portion of the boarding ladder to move. The door frame assembly is arranged on the front portion of the lower plate, rotatably connected to the lower plate through a door frame connecting piece and used for limiting the front portion of the boarding ladder to move in the closed state. According to the fixing device for the boarding ladder with the handrails, the two boarding ladders with the handrails can be fixed at the same time, use is convenient, and fixation is firm and free of abnormal sound in the driving process.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics transportation equipment, and particularly relates to a fixing device for a boarding ladder with handrails. Background Art

[0002] In industries such as logistics, transportation, and warehousing, boarding ladders are usually equipped on vehicles to facilitate the loading and unloading of goods and the getting on and off of personnel. Existing boarding ladders usually have handrails in their design to enhance the safety and stability of users. However, when these boarding ladders with handrails are placed on traditional fixing racks, due to the mismatch of dimensions and clearances, they often result in insecure fixation, and the boarding ladder shakes severely during driving. This not only affects the use effect of the boarding ladder but also may cause damage to the vehicle and the boarding ladder itself. In addition, the boarding ladder is connected by welding, there is a risk of welding deformation, which makes the dimensions of the boarding ladder deviate from the design values, affecting the stability and safety of the boarding ladder and resulting in its inability to be firmly fixed on the fixing rack. Therefore, it is particularly important to design a stable, safe, and easy-to-operate fixing device for the boarding ladder. Summary of the Utility Model

[0003] In view of the above deficiencies existing in the current boarding ladder fixing device, the utility model provides a fixing device for a boarding ladder with handrails, which can fix two boarding ladders with handrails simultaneously, is convenient to use, and is firmly fixed without abnormal noise during driving.

[0004] To achieve the above object, the embodiments of the utility model adopt the following technical solutions:

[0005] A fixing device for a boarding ladder with handrails, comprising:

[0006] An upper plate assembly, the upper plate assembly includes an upper plate, an upper cross beam, and a plurality of upper partition tubes. The upper partition tubes include a plurality of left upper partition tubes, a plurality of right upper partition tubes, and a plurality of main upper partition tubes. The left upper partition tubes and the right upper partition tubes are fixedly connected to both sides of the upper plate. The upper cross beam is horizontally arranged on the upper plate, and the main upper partition tubes are fixedly connected to the upper cross beam;

[0007] A lower plate assembly, which is arranged opposite to the upper plate assembly. The lower plate assembly includes a lower plate and a plurality of lower partition tubes. The lower partition tubes are fixedly connected to the lower plate, and the lower partition tubes correspond to the positions of the main upper partition tubes; the upper plate assembly and the lower plate assembly are connected by a plurality of fixing members;

[0008] A rear sealing plate, both ends of the rear sealing plate are respectively connected to the upper plate and the lower plate, and a limiting assembly is arranged on the rear sealing plate;

[0009] A door frame assembly, which is arranged at the front part of the lower plate. The door frame assembly is detachably connected to the lower plate through a door frame connecting member and is used to limit the movement of the boarding ladder in the closed state.

[0010] In one embodiment, the upper plate is in a "C" shape, and a plurality of the left upper partition pipes are sequentially connected along the length direction of the upper plate, a plurality of the right upper partition pipes are sequentially connected along the length direction of the upper plate, and a plurality of the main upper partition pipes are sequentially connected along the length direction of the upper plate. An upper roller assembly is provided between each pair of upper partition pipes.

[0011] In one embodiment, the upper roller assembly is mounted on the upper plate through a pin shaft.

[0012] In one embodiment, the lower plate is in a "C" shape, and a plurality of the lower partition pipes are sequentially connected along the length direction of the lower plate. A lower roller assembly is provided between each pair of lower partition pipes.

[0013] In one embodiment, the lower roller assembly is mounted on the lower plate through a pin shaft.

[0014] In one embodiment, a weight-reducing hole is formed in the rear sealing plate, the limiting assembly is a rear bending angle member, and the limiting assembly is provided on both sides of the rear sealing plate.

[0015] In one embodiment, the door frame assembly includes a door frame body and a door frame connecting member provided on one side of the door frame body. The door frame body is rotatably connected to the lower plate through the door frame connecting member, and a non-loosening screw is provided on the other side of the door frame body for connecting the door frame body and the lower plate.

[0016] In one embodiment, the fixing member is fixedly connected to the upper plate and the lower plate through a bolt and nut assembly.

[0017] The beneficial effect of the present utility model is to provide a fixing device for a boarding ladder with a handrail, including an upper plate assembly, a lower plate assembly, a rear sealing plate, a door frame assembly and a fixing member. The upper plate assembly and the lower plate assembly are respectively used to support the upper and lower parts of the boarding ladder. The rear sealing plate is connected to the rear parts of the upper plate and the lower plate to limit the rearward movement of the boarding ladder. The door frame assembly is arranged at the front part of the lower plate and is rotatably connected to the lower plate through a door frame connecting member to limit the forward movement of the boarding ladder in the closed state. The connection methods of this device all adopt bolt and nut assemblies, avoiding the welding deformation caused by welding and affecting the stability and safety of the boarding ladder fixing device; the setting of the rollers makes it more convenient to pick up and place the boarding ladder, greatly improving the operation efficiency; the design of the door frame assembly enhances the stability and durability of the device, ensuring that the boarding ladder always maintains a stable fixing effect during long-term use; the weight-reducing hole is provided to reduce the weight of the whole device, facilitating carrying and installation. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these attached drawings.

[0019] Figure 1 Structural schematic diagram of the fixing device for the boarding ladder with handrails according to the present utility model;

[0020] Figure 2 Structural schematic diagram of the other side of the fixing device for the boarding ladder with handrails according to the present utility model;

[0021] Figure 3 Structural schematic diagram of the upper plate assembly according to the present utility model;

[0022] Figure 4 Structural schematic diagram of the lower plate assembly according to the present utility model;

[0023] Figure 5 Structural schematic diagram of the rear sealing plate according to the present utility model;

[0024] Figure 6 Structural schematic diagram of the door frame assembly according to the present utility model;

[0025] Figure 7 Structural schematic diagram of the first roller according to the present utility model;

[0026] Figure 8 Structural schematic diagram of the second roller according to the present utility model;

[0027] Figure 9 Structural schematic diagram of the third roller according to the present utility model;

[0028] Figure 10 Structural schematic diagram of the fourth roller according to the present utility model;

[0029] Figure 11 Structural schematic diagram of the fifth roller according to the present utility model.

[0030] Reference numerals are: 1, upper plate assembly; 11, upper plate; 12, upper cross beam; 13, upper partition pipe; 2, first roller; 21, second roller; 23, fourth roller; 24, fifth roller; 3, lower plate assembly; 31, lower plate; 32, lower partition pipe; 4, fixing member; 5, rear sealing plate; 51, weight reduction hole; 52, limiting assembly; 6, door frame assembly; 61, door frame body; 62, door frame connecting member; 63, non-loosening screw. Detailed implementation manners

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0032] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection: it may be a mechanical connection or an electrical connection: it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0035] As Figures 1 to 6 shown, this embodiment provides a fixing device for a boarding ladder with handrails, including an upper plate assembly 1, a lower plate assembly 3, a rear sealing plate 5, and a door frame assembly 6. The upper plate assembly 1 is used to support the upper part of the boarding ladder, and the lower plate assembly 3 is arranged opposite to the upper plate assembly 1 and is used to support the lower part of the boarding ladder.

[0036] The upper plate assembly 1 includes an upper plate 11, an upper cross beam 12, and multiple upper partition pipes 13. The upper cross beam 12 is horizontally arranged in the middle of the upper plate 11 and is used to restrict the movement of the boarding ladder in the width direction. The upper plate 11 is in a "C" shape. The upper partition pipes 13 include multiple left upper partition pipes, multiple right upper partition pipes, and multiple main upper partition pipes. The left upper partition pipes and the right upper partition pipes are fixedly connected to both sides of the upper plate 11, and the main upper partition pipes are fixedly connected to the upper cross beam 12. Among them, multiple left upper partition pipes are sequentially connected along the length direction of the upper plate 11, multiple right upper partition pipes are sequentially connected along the length direction of the upper plate 11, and multiple main upper partition pipes are sequentially connected along the length direction of the upper plate 11. An upper roller assembly is provided between each upper partition pipe. The upper partition pipes 13 are used for limiting in the length direction of the boarding ladder, and the upper roller assembly is used to provide rolling support when the boarding ladder is placed in or taken out, making the operation more convenient.

[0037] The upper roller assembly includes a first roller 2, a second roller 21, and a third roller. The first roller 2 is composed of a corner piece, a pin shaft, and a roller as shown in Figure 7 the figure, and the first roller 2 is arranged on the left side of the upper plate 11; the second roller 21 is composed of a special-shaped piece, a pin shaft, and a roller as shown in Figure 8 the figure, and the second roller 21 is arranged on the upper cross beam 12 of the upper plate 11; the third roller is composed of a special-shaped piece, a pin shaft, and a roller as shown in Figure 9 the figure, and the third roller is arranged on the right side of the upper plate 11. In this embodiment, 7 first rollers 2 are arranged on the left side of the upper plate 11, 7 second rollers 21 are arranged on the upper cross beam 12, and 7 third rollers are arranged on the right side of the upper plate 11. The number and type of rollers on the upper plate 11 can be optimized according to the actual size and weight of the boarding ladder to ensure the stability of the boarding ladder on the fixing device and the convenience of taking and placing.

[0038] The lower plate assembly 3 includes a lower plate 31 and multiple lower partition pipes 32. The structure of the lower plate 31 is similar to that of the upper plate 11, and the lower plate 31 is also in a "C" shape. Multiple lower partition pipes 32 are sequentially connected along the length direction of the lower plate 31. The lower partition pipes 32 are fixedly connected to the lower plate 31, and a lower roller assembly is provided between each lower partition pipe. The lower partition pipes 32 are also used for limiting in the length direction of the boarding ladder, and the lower roller assembly is used to provide rolling support when the boarding ladder is placed in or taken out, making the operation more convenient.

[0039] The lower roller assembly includes a first roller 2, a fourth roller 23, and a fifth roller 24. The first roller 2 is the same as the first roller 2 in the upper roller assembly, and the first roller 2 is also arranged on the left and right sides of the lower plate 31; the fourth roller 23 is composed of a special-shaped piece, a pin shaft, and a roller as shown in Figure 10 the figure, and the fourth roller 23 is arranged between the lower partition pipes 32 of the lower plate 31 and is separated by the lower partition pipes 32; the fifth roller 24 is composed of a special-shaped piece, a pin shaft, and a roller as shown in Figure 11It consists of the corner fitting, pin shaft, and rollers shown. The fifth roller 24 is arranged below the lower plate 31. In this embodiment, a total of 14 first rollers 2 are arranged on both sides of the lower plate 31, a total of 7 fourth rollers 23 are arranged between the respective lower partition pipes 32 of the lower plate 31, and 14 fifth rollers 24 are arranged below the lower plate 31. The quantity and type of rollers on the lower plate 31 can be optimized according to the actual size and weight of the boarding ladder to ensure the stability of the boarding ladder on the fixing device and the convenience of picking up and placing. Both the lower roller assembly and the upper roller assembly are installed on the lower plate 31 or the upper plate 11 through pin shafts. The material of the rollers is nylon material, which has good wear resistance and corrosion resistance.

[0040] The upper plate assembly 1 and the lower plate assembly 3 are also connected by a plurality of fixing members 4. The fixing members 4 are fixedly connected to the upper plate 11 and the lower plate 31 through bolt and nut assemblies. The fixing members 4 are also used to fix the upper plate 11 and the lower plate 31 to the vehicle. In this embodiment, the connections of the entire device are all made using stainless steel bolts, nuts, flat washers, and spring washers to enhance the durability and stability of the device. The stainless steel is 316 stainless steel. Compared with 304 stainless steel (6Cr19Ni10), 316 stainless steel (18Cr12Ni2.5Mo) adds the Mo element and has better resistance to chloride corrosion and can be used under more demanding conditions.

[0041] Both ends of the rear sealing plate 5 are respectively connected to the upper plate 11 and the lower plate 31, and are used to limit the rear movement of the boarding ladder. A weight reduction hole 51 is also provided on the rear sealing plate 5 to reduce the weight of the entire device. Limiting components 52 are provided on both sides of the rear sealing plate 5. The limiting components 52 are rear corner fittings and are used for the limiting function of the boarding ladder.

[0042] The door frame assembly 6 includes a door frame body 61 and a door frame connecting member 62 provided on one side of the door frame body 61. The door frame body 61 is rotatably connected to the lower plate 31 through the door frame connecting member 62. A non-loosening screw 63 is provided on the other side of the door frame body 61 for connecting the door frame body 61 and the lower plate 31 to prevent it from loosening or falling off during use.

[0043] The overall structure of this device is made of 5mm aluminum plate, which has the advantages of low density, light weight, high strength, and strong corrosion resistance.

[0044] During the use of this device, this fixing device is fixed on the vehicle through the fixing member 4. When the boarding ladder is needed, rotate the non-loosening screw 63 on the door frame body 61 to open the door frame body 61, and then take out the boarding ladder from the fixing device; rotate the non-loosening screw 63 to close the door frame. When the use of the boarding ladder is over, rotate the non-loosening screw 63 on the door frame body 61 again to open the door frame, send the tail of the boarding ladder into the fixing device, and then rotate the non-loosening screw 63 to close the door frame. The device is fast and smooth during use.

[0045] The above embodiments are preferred implementation solutions of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious substitution without departing from the concept of the technical solution is within the scope of the patent of the present utility model.

[0046] In order to enable those of ordinary skill in the art to more conveniently understand the improvements of the present utility model over the prior art, some of the drawings and descriptions of the present utility model have been simplified. For the sake of clarity, some other elements have also been omitted in this application document. Those of ordinary skill in the art should be aware that these omitted elements may also constitute the content of the present utility model.

Claims

1. A fixing device for a boarding ladder with handrails, characterized in that, Comprising: An upper plate assembly (1), the upper plate assembly (1) includes an upper plate (11), an upper cross beam (12) and a plurality of upper partition tubes (13), the upper partition tubes (13) include a plurality of left upper partition tubes, a plurality of right upper partition tubes and a plurality of main upper partition tubes, the left upper partition tubes and the right upper partition tubes are fixedly connected to both sides of the upper plate (11), the upper cross beam (12) is transversely arranged on the upper plate (11), and the main upper partition tubes are fixedly connected to the upper cross beam (12); A lower plate assembly (3), which is arranged opposite to the upper plate assembly (1), the lower plate assembly (3) includes a lower plate (31) and a plurality of lower partition tubes (32), the lower partition tubes (32) are fixedly connected to the lower plate (31), and the lower partition tubes (32) correspond to the positions of the main upper partition tubes; the upper plate assembly (1) and the lower plate assembly (3) are connected by a plurality of fixing members (4); A rear sealing plate (5), both ends of the rear sealing plate (5) are respectively connected to the upper plate (11) and the lower plate (31), and a limiting assembly (52) is arranged on the rear sealing plate (5); A door frame assembly (6), which is arranged at the front part of the lower plate (31), the door frame assembly (6) is detachably connected to the lower plate (31) through a door frame connecting member (62), and is used to limit the movement of the boarding ladder in the closed state.

2. The fixing device according to claim 1, wherein The upper plate (11) is in a "C" shape, a plurality of the left upper partition tubes are sequentially connected along the length direction of the upper plate (11), a plurality of the right upper partition tubes are sequentially connected along the length direction of the upper plate (11), a plurality of the main upper partition tubes are sequentially connected along the length direction of the upper plate (11), and an upper roller assembly is arranged between each upper partition tube.

3. The fixing device according to claim 2, characterized in that, The upper roller assembly is installed on the upper plate (11) through a pin shaft.

4. The fixing device according to claim 1, wherein, The lower plate (31) is in a "C" shape, a plurality of the lower partition tubes are sequentially connected along the length direction of the lower plate (31), and a lower roller assembly is arranged between each lower partition tube.

5. The fixing device according to claim 4, characterized in that, The lower roller assembly is installed on the lower plate (31) through a pin shaft.

6. The fixing device according to claim 1, wherein A weight reduction hole (51) is formed on the rear sealing plate (5), the limiting assembly (52) is a rear bending angle member, and the limiting assembly (52) is arranged on both sides of the rear sealing plate (5).

7. The fixing device according to claim 1, characterized in that, The door frame assembly (6) includes a door frame body (61) and a door frame connecting member (62) arranged on one side of the door frame body (61), the door frame body (61) is rotatably connected to the lower plate (31) through the door frame connecting member (62), and a non-loosening screw (63) is arranged on the other side of the door frame body (61) for connecting the door frame body (61) and the lower plate (31).

8. The fixing device according to claim 1, characterized in that, The fixing member (4) is fixedly connected to the upper plate (11) and the lower plate (31) through a bolt and nut assembly.

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