A kind of for refrigeration box rear door sill and the ladder of rear door of vehicle frame

Abstract

The utility model discloses a kind of for refrigeration box rear door sill and the ladder of vehicle frame rear door, including with the support on refrigeration car girder, the support is set as inverted L type, the end of the support is hinged with stepped stair, its side close to support extends U-shaped support plate, waist hole type sliding slot is penetrated in the both ends of support plate, rotating shaft is penetrated in two the sliding slot and is vertically arranged with support, the both ends of rotating shaft pass through sliding slot and are rotatably connected with support. The utility model belongs to the technical field of refrigeration car, specifically refers to a kind of for refrigeration box rear door sill and the ladder of vehicle frame rear door, to at least solve the problem that user is not convenient to get on and off vehicle when getting on and off vehicle box on refrigeration car rear door, easy to collide vehicle box and there is the problem of easily falling down.

Description

Technical Field

[0001] This utility model belongs to the field of refrigerated vehicle technology, specifically referring to a step for the rear door sill of a refrigerated box and the rear door of the vehicle frame. Background Technology

[0002] With the rapid development of cold chain logistics, refrigerated trucks, as core equipment for transporting temperature-sensitive goods such as food and pharmaceuticals, are experiencing continuous market demand growth, and their functional integrity and operational safety are receiving increasing attention. However, the current mainstream refrigerated truck designs still have shortcomings in operational convenience and safety, particularly in the design of the rear access passageways.

[0003] Most existing refrigerated trucks lack a dedicated ladder between the rear door sill of the refrigerated compartment and the rear door of the chassis in their structural design. Due to the height difference between the bottom of the refrigerated truck compartment and the ground, operators lack a stable support structure when entering and exiting the compartment, and must resort to climbing: either using protruding parts of the compartment edge or stepping directly on the gap between the door sill and the chassis to gain height. This operating method has significant drawbacks: First, during climbing, the body is prone to collisions with the rear edge of the compartment and the corners of the door sill due to instability, potentially causing injuries and damage to the refrigerated compartment door's sealing structure due to impact. Second, without a ladder, operators cannot maintain stable support with both hands while carrying tools, documents, or assisting with loading and unloading goods, greatly increasing the risk of slipping and falling, especially in wet or icy environments such as rainy days or winter. Therefore, there is an urgent need for a dedicated ladder device adapted to the rear door sill of the refrigerated compartment and the rear door of the chassis to solve the safety hazards of the existing operating method. Utility Model Content

[0004] The present invention aims to at least solve the problems of the lack of a step when getting on and off the refrigerated truck rear door, which makes it inconvenient for users to get on and off the truck, makes it easy to collide with the truck, and poses a risk of slipping and falling.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model proposes a step for the rear door sill of a refrigerated box and the rear door of the vehicle frame, including a bracket on the main beam of the refrigerated truck. The bracket is arranged in an inverted L shape. The end of the bracket is hinged with a stepped step. A U-shaped support plate extends from the side of the bracket. The two ends of the support plate are perforated with waist-shaped sliding grooves. A rotating shaft is arranged through the two sliding grooves and perpendicular to the bracket. The two ends of the rotating shaft pass through the sliding grooves and are rotatably connected to the bracket.

[0006] Furthermore, the staircase has a double-layer structure and is made of either Q355 or T6006 aluminum plate.

[0007] Furthermore, the inner side of the staircase is supported by welding square tubes, and several sets of square tubes are provided.

[0008] Furthermore, nuts are threaded onto both ends of the rotating shaft to secure it.

[0009] The beneficial effects of this utility model using the above structure are as follows: A bracket is installed on the main beam of the refrigerated truck and connected to a rotatable and adjustable step ladder, which facilitates users getting on and off the refrigerated truck compartment and prevents people from slipping and falling. At the same time, when not in use, the step ladder can be retracted by adjusting the nut, so the added structure will not affect driving. Attached Figure Description

[0010] Figure 1 This is an installation diagram of the present invention; Figure 2 This is a structural diagram of the staircase; Figure 3 This is a schematic diagram of the rear structure of the staircase.

[0011] The components are: 1. bracket, 2. step ladder, 3. support plate, 4. slide, 5. rotating shaft, 6. square tube, and 7. nut. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] Example 1:

[0015] As per the instruction manual Figure 1-3As shown, a step for the rear door sill of a refrigerated container and the rear door of a vehicle frame includes a bracket 1 on the main beam of the refrigerated truck. The bracket 1 is inverted L-shaped. A stepped step 2 is hinged to the end of the bracket 1. The inner side of the step 2 is supported by square tubes 6 welded together. Several sets of square tubes 6 are provided. The step 2 has a double-layer structure and is made of one of Q355 or T6006 aluminum plate. A U-shaped support plate 3 extends from the side of the step 2 closest to the bracket 1. The two ends of the support plate 3 have waist-shaped grooves 4. A rotating shaft 5 is arranged perpendicular to the bracket 1 and passes through the two grooves 4. The two ends of the rotating shaft 5 pass through the grooves 4 and are rotatably connected to the bracket 1. Nuts 7 are threaded to the two ends of the rotating shaft 5 to fix the rotating shaft 5.

[0016] In the specific implementation of this utility model, the bracket 1 is fixedly connected to the main beam of the refrigerated truck, and the other side of the bracket 1 is rotatably connected to the rotating shaft 5 (when the rotating shaft 5 needs to be fixed, tighten the nut 7). The step ladder 2 is installed on the bracket 1 through the rotating shaft 5. When in use, the step ladder 2 is rotated to the open position and the nut 7 is tightened to fix it. The user can easily get on and off the refrigerated truck compartment through the square tube 6 and the double-layered step ladder 2. When the step ladder 2 is not in use, loosen the nut 7, rotate the step ladder 2 directly to the position where it is vertical and parallel to the bracket 1, and tighten the nut 7 again to achieve the purpose of folding it up.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0018] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A step for the rear door sill of a refrigerated container and the rear door of a vehicle frame, comprising a bracket (1) on the main beam of a refrigerated truck, the bracket (1) being arranged in an inverted L-shape, characterized in that: The end of the support (1) is hinged with a stepped ladder (2), and a U-shaped support plate (3) extends from the side of the support (1). The two ends of the support plate (3) are through waist-shaped sliding grooves (4). A rotating shaft (5) is arranged through the two sliding grooves (4) and perpendicular to the support (1). The two ends of the rotating shaft (5) pass through the sliding grooves (4) and are rotatably connected to the support (1).

2. The step for the rear sill of a refrigerated box and the rear door of a vehicle frame as described in claim 1, characterized in that: The staircase (2) is a double-layer structure, and the staircase (2) is made of either Q355 or T6006 aluminum plate.

3. The step for the rear sill of a refrigerated box and the rear door of a vehicle frame as described in claim 2, characterized in that: The inner side of the step ladder (2) is supported by welding square tubes (6), and the square tubes (6) are provided in several groups.

4. The step for the rear sill of a refrigerated box and the rear door of a vehicle frame as described in claim 1, characterized in that: Nuts (7) are threaded to both ends of the rotating shaft (5) to fix the rotating shaft (5).

Images