Frame widening device of low-level trailer

Abstract

The utility model discloses a frame widening device of a low-level trailer. Comprising a frame body, the frame body comprises a bearing main beam, a supporting auxiliary beam and a supporting cross beam welded between the bearing main beam and the supporting auxiliary beam, the supporting cross beam is a hollow square pipe, and a widening cross beam capable of being pulled out is inserted to widen the frame. The broadened cross beam limiting assembly is composed of a limiting hole, an elastic tongue plate and a limiting column and used for fixing the position of the broadened cross beam. The baffle at the opening of the widened cross beam can be prevented from being completely immersed into the supporting cross beam. The device is simple in structure and convenient to operate, the frame width can be flexibly adjusted according to the cargo width, the problem that transportation is limited due to the fact that the frame width of a traditional low-level trailer is fixed is effectively solved, the universality and the transportation efficiency of the trailer are improved, the transportation cost is reduced, and the device is suitable for various low-level trailer transportation scenes where the frame width needs to be flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the technical field of trailer auxiliary devices, and more specifically, to a device for widening the frame of a low-profile trailer. Background Technology

[0002] In the modern logistics and transportation industry, low-profile trailers are an important means of transportation, widely used for long-distance and short-distance transport of various goods. However, with the increasing diversification of the types and specifications of transported goods, the limitations of traditional low-profile trailers in terms of chassis width have gradually become apparent, impacting transportation efficiency and economic benefits.

[0003] Currently, the dimensions and specifications of various industrial products, machinery and equipment, building materials, and other goods vary greatly. Some large equipment and oversized cargo cannot be directly loaded into traditional low-profile trailers due to their fixed frame width, requiring special transportation methods or disassembly before transport. This not only increases transportation costs and time but also poses a risk of damage to the goods. For example, when transporting oversized equipment such as large wind turbine blades and large transformers, fixed-width low-profile trailers are insufficient, necessitating additional modifications or disassembly for transport, significantly reducing transportation efficiency.

[0004] Fixed-width low-profile trailers cannot quickly and flexibly adjust their chassis width to meet different transportation tasks. When dealing with a large quantity of narrow cargo, the trailer space cannot be fully utilized, resulting in wasted resources; while with oversized cargo, it cannot meet transportation needs, causing transportation plans to be hindered. This lack of flexibility restricts transportation companies in accepting business, making it difficult to adjust transportation plans in a timely manner according to market demands, thus affecting the company's competitiveness.

[0005] To meet the transportation needs of oversized cargo, transportation companies often need to rent special oversized trailers or temporarily modify existing trailers. Renting special trailers is not only expensive but also limited in resources, making it difficult to meet demand at any time. Temporary modifications require significant investment of manpower, materials, and time, and the modified trailers may pose safety hazards. Furthermore, the inability to fully utilize trailer space increases unit transportation costs, reducing the economic efficiency of transportation companies.

[0006] With the continuous advancement of the logistics industry, the demands for transportation efficiency and flexibility are increasing. As a key piece of equipment in logistics transportation, the limited width of the chassis of low-profile trailers has become one of the bottlenecks restricting industry development. Developing a chassis widening device for low-profile trailers that can be flexibly widened has become an urgent need to meet the demands of modern logistics transportation and promote industry development. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and to propose a low-profile trailer frame widening device, including a frame body, wherein the frame body includes:

[0008] The main load-bearing beams are located at the bottom of the trailer body panels, and there are multiple of them, used to support the trailer body panels;

[0009] A supporting secondary beam is set on both sides of the main load-bearing beam. A supporting crossbeam is welded between the supporting secondary beam and the main load-bearing beam. The supporting crossbeam is a hollow square tube.

[0010] An expansion beam is inserted inside the support beam, and the expansion beam can be pulled out from inside the support beam to widen the vehicle frame.

[0011] Preferably, the welds between the supporting crossbeam and the main supporting beam and the supporting secondary beam are reinforced to enhance the stability of the connection.

[0012] Preferably, it also includes a widening beam limiting component, which includes multiple limiting holes opened on the supporting beam and an elastic tongue plate fixedly welded inside the supporting beam. A limiting post is fixedly installed on the elastic tongue plate, and the limiting post extends out of the widening beam and is adapted to the limiting hole. The size of the limiting post is adapted to the size of the limiting hole.

[0013] Preferably, the elastic tongue plate extends through the inner cavity of the widened crossbeam, and the elastic tongue plate is provided with a flange near the opening of the widened crossbeam to facilitate tapping by the operator, and the surface of the flange is provided with anti-slip texture.

[0014] Preferably, a baffle is welded at the opening of the widened crossbeam. The baffle is used to prevent the widened crossbeam from being completely submerged inside the supporting crossbeam. The baffle is made of high-strength steel.

[0015] Preferably, a lubricating layer is provided between the outer surface of the widening beam and the inner surface of the supporting beam to reduce the friction when the widening beam is pulled out and pushed in.

[0016] Compared with existing technologies, the beneficial effects of this utility model are:

[0017] 1. The support beam is a hollow square tube with an internally inserted widening beam that can be pulled out from inside the support beam. This design allows the frame width to be flexibly adjusted according to actual transportation needs. When wider goods need to be transported, the widening beam can be pulled out to increase the frame width, meeting the transportation requirements of goods of different sizes and greatly improving the versatility and applicability of the trailer.

[0018] 2. The widened crossbeam limiting component is designed to effectively limit the movement of the widened crossbeam after it is pulled out to the appropriate position by using the limiting post on the elastic tongue plate and the limiting hole on the widened crossbeam. This ensures that the widened crossbeam will not slide or shift during use, thus guaranteeing the stability and safety of the frame after it has been widened.

[0019] 3. The elastic tongue plate runs through the interior of the supporting crossbeam, and a flange is provided near the opening of the widened crossbeam for easy pressing by the operator. The flange surface is also equipped with anti-slip texture. The operator can easily control the elastic deformation of the elastic tongue plate by pressing the flange, thereby realizing the disengagement and engagement of the limiting post and the limiting hole. The operation is simple and convenient, reducing the difficulty of manual operation and labor intensity.

[0020] 4. The baffle welded at the opening of the widened beam can prevent the widened beam from being completely submerged inside the supporting beam, avoiding the problem of difficulty in pulling it out later due to excessive retraction of the widened beam. At the same time, it also makes it easier for operators to quickly and accurately pull out the widened beam when needed, thus improving operating efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a low-profile trailer frame widening device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of a low-profile trailer frame widening device proposed in this utility model (without sub-beams and extended widening crossbeams). Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Referring to the figure, this embodiment provides a low-profile trailer frame widening device, including a frame body, the frame body comprising:

[0025] The main beam 1, located at the bottom of the trailer body, is multiple in number and is used to support the trailer body.

[0026] Supporting secondary beams 2 are set on both sides of the main load-bearing beam. Supporting crossbeams 3 are welded between the supporting secondary beams and the main load-bearing beams. The supporting crossbeams are hollow square tubes.

[0027] An expansion beam 4 is slidably inserted inside the support beam 3. The expansion beam 4 can be pulled out from inside the support beam 3 to widen the vehicle frame.

[0028] Furthermore, the welds between the supporting beam 2 and the main supporting beam 1 and the supporting secondary beam 2 have been reinforced to enhance the stability of the connection.

[0029] Furthermore, it also includes a widening beam limiting component, which includes multiple limiting holes 51 opened on the supporting beam 3 and an elastic tongue plate 6 fixedly welded inside the supporting beam. A limiting post 7 is fixedly installed on the elastic tongue plate 6, and the limiting post 7 can extend upward out of the widening beam to match the limiting hole 51; the size of the limiting post 7 is adapted to the size of the limiting hole.

[0030] Furthermore, the elastic tongue plate 6 penetrates the inner cavity of the widened crossbeam 4, and the elastic tongue plate is provided with a flange 8 near the opening of the widened crossbeam 4 to facilitate the operator's tapping. The surface of the flange is provided with anti-slip texture.

[0031] Furthermore, a baffle 9 is welded to the opening of the widened crossbeam 4. The baffle 9 is used to prevent the widened crossbeam 4 from being completely submerged inside the supporting crossbeam 3. The baffle 9 is made of high-strength steel.

[0032] Furthermore, a lubricating layer is provided between the outer surface of the widening beam 4 and the inner surface of the supporting beam 2 to reduce the friction when the widening beam is pulled out and pushed in.

[0033] The usage process of the above embodiments in specific applications is as follows:

[0034] Before using the frame widening device, the operator needs to conduct a comprehensive inspection of the entire device. Check for deformation, cracks, or other damage to the main load-bearing beam, auxiliary support beam, and support crossbeam; check whether the widening crossbeam can slide freely inside the support crossbeam without any jamming; confirm that the widening crossbeam limiting components are working properly, including whether the elastic tongue plate is elastic and whether the limiting post and limiting hole fit smoothly.

[0035] Based on the actual width of the goods to be transported, determine the specific dimensions by which the chassis needs to be widened. By measuring the width of the goods and combining it with the original width of the low trailer, calculate the length that the widening beam needs to be extended to ensure accurate subsequent adjustments to the chassis width.

[0036] The operator stands at the opening of the widened crossbeam, reaches into the inner cavity of the widened crossbeam, and locates the flange on the elastic tongue plate. Because the flange surface has anti-slip textures, it is easy for the operator to grip and apply pressure. Pressing the flange firmly causes the elastic tongue plate to deform elastically, causing the limiting post to disengage from its current limiting hole.

[0037] After the limiting post disengages from the limiting hole, the operator can hold the widening beam and pull it out smoothly along the inside of the supporting beam. During the pulling process, care should be taken to keep the widening beam horizontal and stable to avoid collisions or friction with the supporting beam. Stop pulling when it reaches the predetermined widening dimension.

[0038] Once the extended crossbeam is pulled out to the appropriate position, release the pressure on the elastic tongue plate. The elastic tongue plate will then return to its original position, and the limiting post will automatically engage with the corresponding limiting hole, thus fixing the extended crossbeam in its current position. The operator can gently shake the extended crossbeam to check its secure fixation and ensure that it will not slip or shift during transportation.

[0039] Before loading the trailer with cargo and preparing to depart, double-check the securing of the widening crossbeam. Confirm that the limit posts are fully engaged in the limit holes and that the connection between the widening crossbeam and the support crossbeam is secure. Also, check the entire frame structure for any abnormal noises or looseness.

[0040] During transportation, drivers should pay close attention to the vehicle's driving condition. If abnormal shaking or increased noise is observed while the vehicle is in motion, it may indicate a problem with the frame widening device. In this case, the vehicle should be stopped immediately for inspection to check whether the widening crossbeams are loose or displaced. If any problems are found, they should be addressed promptly.

[0041] Once the goods have arrived at their destination and been unloaded, if it is necessary to restore the chassis to its original width, the operators must first clean the widening beams and support beams, removing dust, debris, and other contaminants to ensure cleanliness for subsequent operations.

[0042] Using the same method as the widening operation, the operator presses the flange of the elastic tongue plate to disengage the limiting pin from the limiting hole.

[0043] Hold the widening crossbeam and slowly push it into the support crossbeam. During this process, maintain a smooth motion to avoid excessive force that could cause the widening crossbeam to collide with or damage the support crossbeam. Once the widening crossbeam is fully inserted into the support crossbeam, release the elastic tongue; the limiting post will automatically engage with the corresponding limiting hole, completing the restoration of the frame width.

[0044] In the above embodiments and during use, it has the following advantages compared to traditional low-flatbed trailers:

[0045] 1. The support beam is a hollow square tube with an internally inserted widening beam that can be pulled out from inside the support beam. This design allows the frame width to be flexibly adjusted according to actual transportation needs. When wider goods need to be transported, the widening beam can be pulled out to increase the frame width, meeting the transportation requirements of goods of different sizes and greatly improving the versatility and applicability of the trailer.

[0046] 2. The widened crossbeam limiting component is designed to effectively limit the movement of the widened crossbeam after it is pulled out to the appropriate position by using the limiting post on the elastic tongue plate and the limiting hole on the widened crossbeam. This ensures that the widened crossbeam will not slide or shift during use, thus guaranteeing the stability and safety of the frame after it has been widened.

[0047] 3. The elastic tongue plate runs through the interior of the supporting crossbeam, and a flange is provided near the opening of the widened crossbeam for easy pressing by the operator. The flange surface is also equipped with anti-slip texture. The operator can easily control the elastic deformation of the elastic tongue plate by pressing the flange, thereby realizing the disengagement and engagement of the limiting post and the limiting hole. The operation is simple and convenient, reducing the difficulty of manual operation and labor intensity.

[0048] 4. The baffle welded at the opening of the widened beam can prevent the widened beam from being completely submerged inside the supporting beam, avoiding the problem of difficulty in pulling it out later due to excessive retraction of the widened beam. At the same time, it also makes it easier for operators to quickly and accurately pull out the widened beam when needed, thus improving operating efficiency.

[0049] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be covered within the protection scope of this utility model.

[0050] Furthermore, it should be understood in the description of this utility model that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A device for widening the frame of a low-profile trailer, comprising a frame body, characterized in that, The main body of the vehicle frame includes The main load-bearing beams are located at the bottom of the trailer body panels, and there are multiple of them, used to support the trailer body panels; A supporting secondary beam is set on both sides of the main load-bearing beam. A supporting crossbeam is welded between the supporting secondary beam and the main load-bearing beam. The supporting crossbeam is a hollow square tube. An expansion beam is inserted inside the support beam, and the expansion beam can be pulled out from inside the support beam to widen the vehicle frame.

2. The low-profile trailer frame widening device according to claim 1, characterized in that, The welds between the supporting crossbeam and the main supporting beam and the supporting secondary beam have been reinforced to enhance the stability of the connection.

3. The low-profile trailer frame widening device according to claim 1, characterized in that, It also includes a widening beam limiting component, which includes multiple limiting holes opened on the supporting beam and an elastic tongue plate fixedly welded inside the supporting beam. A limiting post is fixedly installed on the elastic tongue plate, and the limiting post extends out of the widening beam to match the limiting hole; the size of the limiting post matches the size of the limiting hole.

4. The low-profile trailer frame widening device according to claim 3, characterized in that, The elastic tongue plate penetrates the inner cavity of the widened crossbeam, and the elastic tongue plate is provided with a flange near the opening of the widened crossbeam to facilitate the operator's tapping. The surface of the flange is provided with anti-slip texture.

5. The low-profile trailer frame widening device according to claim 1, characterized in that, A baffle is welded to the opening of the widened crossbeam. The baffle is used to prevent the widened crossbeam from being completely submerged inside the supporting crossbeam. The baffle is made of high-strength steel.

6. The low-profile trailer frame widening device according to claim 1, characterized in that, A lubricating layer is provided between the outer surface of the widening beam and the inner surface of the supporting beam to reduce the friction when the widening beam is pulled out and pushed in.

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