Carriage structure of power supply semitrailer

Abstract

The utility model provides a carriage structure of a power supply semitrailer, which comprises a tractor, a gooseneck semitrailer and a carriage, stress grooves are arranged on two sides of the front portion of the carriage, each stress groove is in a groove shape and consists of an outer groove plate, a framework and an inner decorative plate, a folding top climbing ladder is further embedded in each stress groove and comprises a fixed ladder and a folding ladder, and the fixed ladders and the folding ladders are arranged on the framework. The fixed ladder is fixedly installed in the stress groove, and the bottom of the fixed ladder is connected with the folding ladder in a turnover mode. According to the utility model, the groove is additionally arranged at the joint of the gooseneck semitrailer and the carriage, the groove plays a role of a stress concentration venting port, the structure is simple, and the processing cost is low; the folding top climbing ladder is additionally arranged in the groove, so that after the tractor is separated from the semitrailer, the top climbing operation is not influenced, and an operator can normally go to the top of the vehicle to maintain the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of robot loading vehicles, and in particular to the cargo box structure of a power supply semi-trailer. Background Technology

[0002] A power supply semi-trailer is a specialized vehicle that integrates a generator set, fuel tank, control cabinet, switch cabinet, cable reel, ventilation and noise reduction system, exhaust system, and dedicated cargo box onto a semi-trailer chassis to independently provide power supply. As emergency power supply equipment, power supply semi-trailers are widely used in emergency rescue operations.

[0003] Powered semi-trailers typically consist of a tractor unit (1), a gooseneck semi-trailer (2), and a cargo box (3). Currently, the gooseneck semi-trailer (2) and cargo box (3) are welded together. This connection is prone to stress concentration and deformation, leading to cracking, especially after road testing. This cracking can cause paint damage and even panel breakage, resulting in rust and deformation of the cargo box, significantly shortening its lifespan. Furthermore, the access ladder for existing powered semi-trailers is usually located at the front of the gooseneck semi-trailer (2). After the tractor unit (1) separates from the gooseneck semi-trailer (2), the bottom of the ladder is approximately 1.8 meters above the ground, making it difficult for personnel to access the roof for maintenance. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] The present invention adopts the following technical solution: a cargo box structure for a power supply semi-trailer, including a tractor, a gooseneck semi-trailer and a cargo box, wherein stress grooves are provided on both sides of the front of the cargo box, the stress grooves are in the shape of grooves and are composed of an outer groove plate, a frame and an interior panel, the outer groove plate is fixedly connected to the frame by welding, the frame is welded to the frame on both sides of the cargo box, the interior panel is fixed to the inner side of the frame by rivets, and polyurethane foam is filled between the interior panel and the outer groove plate.

[0006] Furthermore, a folding ladder is also embedded in the stress groove. The folding ladder includes a fixed ladder and a folding ladder. The fixed ladder is fixedly installed in the stress groove, and its bottom is foldably connected to the folding ladder.

[0007] Furthermore, the lower ends of the two side rods of the fixed ladder and the upper ends of the two side rods of the folding ladder are provided with hinge seats, which are hinged by pins to achieve flipping, and the sides of the hinge seats are provided with buckles.

[0008] Furthermore, the top of the carriage is also equipped with handrails, which are installed on both sides of the stress groove and staggered inwards and outwards.

[0009] Furthermore, the width of the stress groove is between 350-400mm, and the depth is between 200-250mm.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. This utility model adds a groove at the connection between the gooseneck semi-trailer and the cargo box. The groove serves as a stress concentration outlet and has a simple structure and low processing cost.

[0012] 2. By adding a folding ladder to the top in the groove, the climbing operation will not be affected after the tractor and semi-trailer are separated, and the operators can still go to the top of the vehicle to perform vehicle maintenance. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the present invention;

[0014] Figure 2 This is a top sectional view of the present invention;

[0015] Figure 3 for Figure 2 Enlarged view of point A;

[0016] Figure 4 This is a three-dimensional schematic diagram of the stress groove section;

[0017] Figure 5 This is a schematic diagram of a folding ladder to the top.

[0018] Legend: 1-Tractor, 2-Gooseneck semi-trailer, 3-Cargo box, 4-Stress groove, 5-Folding ladder to the top, 6-Handrail, 41-External groove plate, 42-Frame, 43-Interior panel, 44-Polyurethane foam, 51-Fixed ladder, 52-Folding ladder, 53-Hinged seat. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Please see Figure 1-5 The present invention provides a cargo box structure for a power supply semi-trailer, including a tractor 1, a gooseneck semi-trailer 2 and a cargo box 3. Stress grooves 4 are provided on both sides of the front of the cargo box 3. The stress grooves 4 are groove-shaped and are composed of an outer groove plate 41, a frame 42 and an interior panel 43. The outer groove plate 41 is fixedly connected to the frame 42 by welding. The frame 42 is welded to the frame on both sides of the cargo box. The interior panel 43 is fixed to the inside of the frame 42 by rivets. The space between the interior panel 43 and the outer groove plate 41 is filled with polyurethane foam 44.

[0023] Further as Figure 2 , 3 As shown in Figure 5, a folding ladder 5 is also embedded in the stress groove 4. The folding ladder 5 includes a fixed ladder 51 and a folding ladder 52. The fixed ladder 51 can be fixedly installed in the stress groove 4, or it can be hinged to the stress groove 4 by setting hinge plates at the upper and lower ends. This allows the folding ladder 5 to be tilted outward and pulled out when going up or down the ladder, making it convenient to go up and down. The bottom of the fixed ladder 51 is foldably connected to the folding ladder 52. In this embodiment, hinge seats 53 are provided at the lower ends of the fixed ladder 51 and the two side rods and the upper ends of the two side rods of the folding ladder 52. The folding ladder 52 is folded or unfolded and then fixed by the hooks.

[0024] Further as Figure 4 As shown, the top of the carriage 2 is also equipped with handrails 6. The handrails 6 are installed on both sides of the stress groove 4 and are staggered inside and out to facilitate going up and down the ladder.

[0025] The gooseneck semi-trailer 2 has two support points: a towing pin and three rear axles. After the superstructure is installed, its weight is applied to the gooseneck semi-trailer 2, making the gooseneck structure a stress concentration point. When a stress groove 4 is added to the cargo box 3 attached to the gooseneck, the stress is released through the flexibility of the bending structure of the stress groove 4, thus solving the problem of deformation and cracking at this point. When the outriggers of the gooseneck semi-trailer 2 and the cargo box 3 are raised, the tractor 1 can be separated from the gooseneck semi-trailer 2. At this time, for maintenance of the vehicle clearance, the buckle of the folding ladder 52 can be loosened and lowered, allowing personnel to get on and off the vehicle via the folding ladder 52 and the handrail 6.

[0026] Further as Figure 3 , 4 As shown, the width of the stress groove 4 is between 350-400mm and the depth is between 200-250mm.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A body structure of a power semi-trailer, characterized by: The utility model relates to a truck, a gooseneck semitrailer and a carriage, the front two sides of the carriage are provided with stress grooves, the stress grooves are groove shapes, are composed of outer groove plates, skeletons and inner decoration plates, the outer groove plates are fixedly connected with the skeletons through welding, the skeletons are welded with the two side skeletons of the carriage, the inner decoration plates are fixed in the inner side of the skeleton through rivets, and the inner decoration plates and the outer groove plates are filled with polyurethane foaming glue.

2. The power supply semitrailer's body structure according to claim 1, characterized in that: A folding roof ladder is also embedded and installed in the stress groove, the folding roof ladder comprises a fixed ladder and a folding ladder, the fixed ladder is fixedly installed in the stress groove, and the bottom is reversibly connected with the folding ladder.

3. The power supply semitrailer's body structure according to claim 2, characterized in that: Hinge seats are arranged at the lower ends of the two side rods of the fixed ladder and the upper ends of the two side rods of the folding ladder, and the hinge seats are reversibly connected through pin shafts, and the side edges of the hinge seats are provided with buckles.

4. The power supply semitrailer's body structure according to claim 1, characterized in that: The top of the carriage is also provided with handrails, the handrails are installed on the two sides of the stress groove, and the inner and outer parts are staggered.

5. The power supply semitrailer's body structure according to claim 1, characterized in that: The width of the stress groove is between 350-400mm, and the depth is between 200-250mm.

Images