An extendable cargo support device for a semi-trailer

Abstract

This disclosure relates to the technical field of semi-trailer related accessories. One embodiment of this disclosure provides a deployable cargo support device for a semi-trailer, comprising: a bottom frame and a top frame, the top frame being disposed on top of the bottom frame; a support and protection component being disposed between the bottom frame and the top frame; and a reinforcing support component being disposed at one end of the bottom frame and the top frame. The support and protection component includes a pair of elongated holes, which are respectively opened at both ends of the surfaces of the bottom frame and the top frame. Each elongated hole is rotatably connected to a connecting post via a rotating shaft. A connecting frame is rotatably connected between the corresponding pair of connecting posts at the top and bottom via a pin. This technical solution solves the problem in the prior art where the constraint of pipe components relies mainly on rope binding or single-sided baffle limiting. When there are many pipe components, the stacked pipe components are prone to mutual compression, and the binding ropes are prone to loosening during long-distance transportation or complex road conditions.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of semi-trailer-related accessories, and more specifically, to a deployable cargo support device for a semi-trailer. Background Technology

[0002] In the scenario of semi-trailer transporting long and narrow pipe components (such as steel pipes, steel bars, plastic pipes, etc.), cargo support devices are the core components to ensure transportation safety. Their main function is to limit the displacement of the pipe components during the journey and prevent collisions or falling due to bumps, turns, etc.

[0003] Currently, most semi-trailer cargo support devices on the market are fixed structures, such as welded baffles and tie-on supports. These devices have significant limitations when transporting large quantities of pipe fittings: traditional devices rely on rope binding or single-sided baffles to restrain the pipe fittings. When there are many pipe fittings, the stacked fittings are prone to mutual compression. During long-distance transportation or in complex road conditions, the binding ropes are prone to loosening, and the pipe fittings are prone to slipping out of the gaps in the support device, which not only causes cargo damage but may also lead to road traffic safety accidents.

[0004] Furthermore, some support devices, due to insufficient structural rigidity, are prone to deformation when subjected to the gravitational load of a large number of pipes, further exacerbating the instability of pipe fixing. These problems make it difficult for traditional support devices to meet the safety requirements of large-scale pipe transportation, and there is an urgent need for a new type of cargo support device that can be flexibly deployed, effectively restrain a large number of pipes, and prevent them from falling off. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a deployable cargo support device for semi-trailers, which solves the technical problem that in the prior art, the constraint of pipes by traditional devices mostly relies on rope binding or single-sided baffle limiting. When there are many pipes, the stacked pipes are prone to mutual compression, and the binding ropes are prone to loosening in long-distance transportation or complex road conditions.

[0006] According to one aspect, at least one embodiment of this disclosure provides a deployable cargo support device for a semi-trailer, comprising:

[0007] A bottom frame and a top frame, wherein the top frame is disposed on top of the bottom frame;

[0008] A support and protection assembly is disposed between the bottom frame and the top frame;

[0009] A reinforcing support assembly is disposed at one end of the bottom frame and the top frame;

[0010] The support and protection assembly includes a pair of elongated holes, which are respectively opened at both ends of the bottom frame and the top frame. Each elongated hole is rotatably connected to a connecting column via a rotating shaft. The corresponding pair of connecting columns at the top and bottom are rotatably connected to a connecting frame via a pin.

[0011] As a further technical solution, a transmission gear is provided at one end of the rotation shaft of each of the connecting columns located at both ends of the bottom frame, and a pair of fixing plates are provided on both sides of the bottom frame, with a hydraulic telescopic cylinder horizontally fixedly connected to the side surface of the fixing plate.

[0012] As a further technical solution, the output end of the hydraulic telescopic cylinder is provided with a rack, which meshes with the transmission gear. One end of the rack is provided with a plurality of stabilizing rods, and one end of the stabilizing rods is movably connected to the fixed plate.

[0013] As a further technical solution, the reinforcing support component includes a pair of slots, each slot being formed at both ends of the bottom frame, and a stabilizing column being rotatably connected to the slot via a pin. A pair of stabilizing slots are formed at both ends of the bottom of the top frame.

[0014] As a further technical solution, the upper end of the stabilizing column is vertically and movably connected to a docking column, and a stud is rotatably connected to the top of the stabilizing column. A threaded hole is opened in the bottom of the docking column, and the threaded hole and the stud are connected by a threaded engagement. The stabilizing column is vertically inserted into the stabilizing groove.

[0015] As a further technical solution, the top frame is a U-shaped structure with an opening on one side.

[0016] As a further technical solution, the bottom frame has horizontal grooves at both ends, and the bottom surface of the horizontal grooves has several fixing holes.

[0017] As a further technical solution, the pair of connecting columns can rotate in one direction through the connection point with the connecting frame pin, and the maximum rotation angle between the connecting column and the connecting frame is 90°.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] In this disclosure, the support and protection assembly solves the problem of insufficient constraint in traditional support devices through a linkage lifting design. A hydraulically driven rack and pinion, in conjunction with transmission gears, drives the connecting column and connecting frame to unfold synchronously. After the top frame rises to its highest position, the connecting frame forms a three-sided protective barrier, preventing pipe components from being squeezed and slipping. The parallelogram structure ensures smooth lifting and lowering of the top frame, while the stabilizing rod prevents rack misalignment, improving operational stability. This design replaces rope binding, enhances the constraint capacity for a large number of pipe components, adapts to complex road conditions, and reduces the risk of cargo damage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is an isometric drawing of the present disclosure;

[0023] Figure 3 This is an isometric sectional view of the present disclosure;

[0024] In the diagram: 1. Base frame; 2. Top frame; 3. Support and protection components; 3-1. Elongated hole; 3-2. Connecting column; 3-3. Connecting frame; 3-4. Transmission gear; 3-5. Fixing plate; 3-6. Hydraulic telescopic cylinder; 3-7. Rack; 3-8. Stabilizing rod; 4. Fixed support components; 4-1. Groove; 4-2. Stabilizing column; 4-3. Stabilizing groove; 4-4. Connecting column; 4-5. Stud; 4-6. Threaded hole; 5. Horizontal groove; 6. Fixing hole. Detailed Implementation

[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this disclosure.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-3 As shown, it illustrates a deployable cargo support device for a semi-trailer according to an embodiment of the present disclosure, comprising:

[0032] A bottom frame 1 and a top frame 2, wherein the top frame 2 is disposed on top of the bottom frame 1;

[0033] A support and protection component 3 is provided, which is disposed between the bottom frame 1 and the top frame 2;

[0034] Reinforcing support component 4, wherein the reinforcing support component 4 is disposed at one end of the bottom frame 1 and the top frame 2;

[0035] The supporting and protective assembly 3 includes a pair of elongated holes 3-1, which are respectively opened at both ends of the surfaces of the bottom frame 1 and the top frame 2. Each elongated hole 3-1 is rotatably connected to a connecting column 3-2 via a rotating shaft. A connecting frame 3-3 is rotatably connected between the corresponding pair of connecting columns 3-2 at the top and bottom via a pin. A transmission gear 3-4 is provided at one end of the rotating shaft of each connecting column 3-2 located at both ends of the bottom frame 1. A pair of fixing plates 3-5 are provided on both sides of the bottom frame 1. A hydraulic telescopic cylinder 3-6 is horizontally fixedly connected to the side surface of the fixing plate 3-5. A rack 3-7 is provided at the output end of the hydraulic telescopic cylinder 3-6. The rack 3-7 meshes with the transmission gear 3-4. A plurality of stabilizing rods 3-8 are provided at one end of the rack 3-7. One end of the stabilizing rod 3-8 is movably connected to the fixing plate 3-5.

[0036] In some examples, to achieve the vertical lifting and lowering of the top frame 2 and the formation of the protective frame, a support and protection component 3 is designed. This component includes elongated holes 3-1 at both ends of the surfaces of the bottom frame 1 and the top frame 2, which are opened along the length direction to provide space for the rotation of the connecting columns 3-2. The connecting columns 3-2 are rotatably connected to the elongated holes 3-1 through rotating shafts. The connecting brackets 3-3 between the corresponding connecting columns 3-2 at the top and bottom are rotatably connected by pins, forming a parallelogram linkage structure to ensure that the top frame 2 remains horizontal when lifting and lowering. One end of the rotating shaft of the connecting columns 3-2 at both ends inside the bottom frame 1 is keyed to the transmission gear 3-4. The fixing plates 3-5 on both sides of the bottom frame 1 are fixed by bolts. The hydraulic telescopic cylinder 3-6 is horizontally fixed to the side surface of the fixing plate 3-5. The rack 3-7 at the output end meshes with the transmission gear 3-4 to form a transmission mechanism. The stabilizing rod 3-8 at one end of the rack 3-7 passes through the through hole of the fixing plate 3-5 and is movably fitted with the plate body, serving a guiding function.

[0037] During operation, the hydraulic telescopic cylinder 3-6 extends, pushing the rack 3-7 to move. Through the meshing transmission gear 3-4, the connecting column 3-2 rotates around the axis of rotation. The connecting frame 3-3 unfolds as the connecting column 3-2 rotates, pushing the top frame 2 vertically upwards. When the connecting column 3-2 reaches a vertical position, the top frame 2 rises to its highest position, and the connecting frame 3-3 forms a side protective barrier, providing frame shielding and protection. Retracting the hydraulic telescopic cylinder 3-6 causes the rack 3-7 to move in the opposite direction, folding the connecting column 3-2 and the connecting frame 3-3, and the top frame 2 descends to its original position. The parallelogram linkage structure ensures smooth lifting and lowering of the top frame 2, preventing tilting. The rack and pinion transmission makes the lifting process synchronous and controllable, improving operational stability. The cooperation between the stabilizing rod 3-8 and the fixing plate 3-5 prevents the rack 3-7 from shifting, ensuring precise meshing with the transmission gear 3-4. The protective barrier formed by the unfolded connecting frame 3-3 prevents lateral movement of goods, enhancing transportation safety. This component integrates the lifting and protection functions of the top frame 2 through a linkage mechanism and transmission, adapting to the needs of cargo support and protection.

[0038] like Figures 1-3 As shown in the figure, the reinforcement support component 4 in this embodiment includes a pair of notches 4-1. Both notches 4-1 are opened at both ends of the bottom frame 1. A stabilizing column 4-2 is rotatably connected to the notch 4-1 by a pin. A pair of stabilizing grooves 4-3 are opened at both ends of the bottom of the top frame 2. A docking column 4-4 is vertically and movably connected to the upper end of the stabilizing column 4-2. A stud 4-5 is rotatably connected to the top of the stabilizing column 4-2. A threaded hole 4-6 is opened in the bottom of the docking column 4-4. The threaded hole 4-6 and the stud 4-5 are connected by a threaded engagement. The stabilizing column 4-2 is vertically inserted into the stabilizing groove 4-3.

[0039] In some examples, to improve overall stability and safety, a reinforced support component 4 is designed. This component includes slots 4-1 at both ends of the bottom frame 1, which are opened along the width direction. The stabilizing column 4-2 is rotatably connected to the slot 4-1 by a pin, and can be rotated from a horizontal storage state to a vertical support state. The stabilizing slots 4-3 at both ends of the bottom of the top frame 2 are adapted to the upper end of the stabilizing column 4-2. The stud 4-5 at the top of the stabilizing column 4-2 is rotated and fitted by a bearing. The threaded hole 4-6 at the bottom of the connecting column 4-4 cooperates with the stud 4-5 to form a height adjustment structure. The connecting column 4-4 can extend and retract along the axial direction of the stabilizing column 4-2, and its upper end fits against the inner wall of the stabilizing slot 4-3.

[0040] During operation, after the top frame 2 is raised, the stabilizing column 4-2 is rotated to rotate from the slot 4-1 to a vertical position. The rotating stud 4-5 drives the connecting column 4-4 to extend upwards until its upper end inserts into the stabilizing slot 4-3 of the top frame 2. The stud 4-5 is then tightened to ensure a tight fit between the connecting column 4-4 and the stabilizing slot 4-3. For disassembly, the stud 4-5 is rotated in the opposite direction, causing the connecting column 4-4 to retract, and the stabilizing column 4-2 is rotated to a horizontal position and stored in the slot 4-1. The threaded engagement between the stud 4-5 and the connecting column 4-4 allows for fine-tuning of the height, ensuring precise alignment with the stabilizing slot 4-3 and adapting to different lifting heights of the top frame 2. The vertical support structure of the stabilizing column 4-2 and the connecting column 4-4 enhances the connection strength between the bottom frame 1 and the top frame 2 from the ends, distributing the load. The slot 4-1's storage design reduces space occupation when not in use, avoiding interference with loading and unloading. The interlocking fixing method allows for direct transmission of support force, improving the overall structure's resistance to deformation. This component, through adjustable support and fitting fixation, further strengthens the frame connection and improves transportation safety.

[0041] For example, such as Figure 1 As shown, the top frame 2 has an overall U-shaped structure with an opening on one side.

[0042] In some examples, the top frame 2 has an overall U-shaped structure with an opening on one side, which facilitates loading and unloading of goods, while the three closed sides form a barrier. After the top frame 2 is raised, this structure can limit the goods from three directions to prevent them from sliding off the side during transportation. At the same time, the single-side opening design facilitates the entry and exit of equipment such as forklifts, balancing protection and ease of loading and unloading, and adapting to the support needs of different types of goods.

[0043] For example, such as Figure 1 As shown, both ends of the surface of the bottom frame 1 are provided with horizontal grooves 5, and the bottom surface of the horizontal grooves 5 is provided with a number of fixing holes 6.

[0044] In some examples, the transverse grooves 5 at both ends of the surface of the base frame 1 are formed along the width direction, and the fixing holes 6 on the inner bottom surface can be used to connect auxiliary fasteners with bolts. The transverse grooves 5 provide space for adjusting the installation position of the fasteners, allowing for flexible setting of fixing points according to the size of the goods, and further securing the goods with ropes or baffles. The setting of the fixing holes 6 enhances the connection flexibility between the base frame 1 and the auxiliary components, and improves the stability of the goods placement.

[0045] For example, such as Figure 1 As shown, the pair of connecting columns 3-2 rotate in one direction through the pin connection with the connecting frame 3-3, and the maximum rotation angle between the connecting column 3-2 and the connecting frame 3-3 is 90°.

[0046] In some examples, the pin connections between the pair of connecting columns 3-2 and the connecting frame 3-3 can only rotate in one direction, with a maximum rotation angle of 90°. This design limits the unfolding range of the connecting frame 3-3, ensuring that the connecting columns 3-2 and the connecting frame 3-3 form a vertical support structure when the top frame 2 is raised, thus preventing excessive rotation that could cause frame deformation. Simultaneously, unidirectional rotation prevents the connecting frame 3-3 from accidentally folding during transport, ensuring the stability of the support and protection assembly 3 and improving the safety of the device.

[0047] In practical use: The device is installed on the semi-trailer through the fixing holes 6 of the bottom frame 1. The hydraulic telescopic cylinder 3-6 extends to push the rack 3-7, which drives the transmission gear 3-4 to rotate. The connecting column 3-2 rotates along the elongated hole 3-1, the connecting frame 3-3 unfolds, and pushes the top frame 2 to rise vertically. When it reaches the highest position, the connecting frame 3-3 forms a side protective barrier. Then, the stabilizing column 4-2 is rotated out of the slot 4-1 to a vertical position, and the stud 4-5 is rotated to make the connecting column 4-4 rise and insert into the stabilizing slot 4-3 of the top frame 2 to complete the reinforcement. When loading and unloading goods, the reverse operation causes the top frame 2 to descend, the connecting frame 3-3 to fold, and the stabilizing column 4-2 to retract into the slot 4-1. The open side of the U-shaped top frame 2 facilitates the entry and exit of goods, achieving rapid unfolding and folding throughout the process.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A deployable cargo support device for a semi-trailer, characterized in that, include: A bottom frame (1) and a top frame (2), wherein the top frame (2) is disposed on top of the bottom frame (1); A support and protection component (3) is provided between the bottom frame (1) and the top frame (2); A reinforcing support assembly (4) is provided at one end of the bottom frame (1) and the top frame (2); The support and protection component (3) includes a pair of elongated holes (3-1), which are respectively opened at both ends of the bottom frame (1) and the top frame (2). Each elongated hole (3-1) is rotatably connected to a connecting column (3-2) through a rotating shaft. The pair of connecting columns (3-2) corresponding to the top and bottom are rotatably connected to a connecting bracket (3-3) through a pin.

2. The deployable cargo support device for a semi-trailer according to claim 1, characterized in that, A transmission gear (3-4) is provided at one end of the rotating shaft of the connecting column (3-2) located at both ends of the bottom frame (1). A pair of fixing plates (3-5) are provided on both sides of the bottom frame (1). A hydraulic telescopic cylinder (3-6) is horizontally fixed to the side surface of the fixing plate (3-5).

3. A deployable cargo support device for a semi-trailer according to claim 2, characterized in that, The output end of the hydraulic telescopic cylinder (3-6) is provided with a rack (3-7), which meshes with the transmission gear (3-4). One end of the rack (3-7) is provided with several stabilizing rods (3-8), and one end of the stabilizing rods (3-8) is movably connected to the fixed plate (3-5).

4. A deployable cargo support device for a semi-trailer according to claim 1, characterized in that, The reinforcing support component (4) includes a pair of slots (4-1), both of which are opened at both ends of the bottom frame (1). A stabilizing column (4-2) is rotatably connected to the slot (4-1) by a pin. A pair of stabilizing slots (4-3) are opened at both ends of the bottom of the top frame (2).

5. A deployable cargo support device for a semi-trailer according to claim 4, characterized in that, The upper end of the stabilizing column (4-2) is vertically and movably connected to the docking column (4-4). The top of the stabilizing column (4-2) is connected to the stud (4-5) by a rotating fitting. The bottom of the docking column (4-4) is provided with a threaded hole (4-6). The threaded hole (4-6) and the stud (4-5) are connected by a threaded engagement. The stabilizing column (4-2) is vertically inserted into the stabilizing groove (4-3).

6. A deployable cargo support device for a semi-trailer according to claim 1, characterized in that, The top frame (2) is a U-shaped structure with an opening on one side.

7. A deployable cargo support device for a semi-trailer according to claim 1, characterized in that, The bottom frame (1) has horizontal grooves (5) at both ends, and a number of fixing holes (6) are provided on the bottom surface of the horizontal grooves (5).

8. A deployable cargo support device for a semi-trailer according to claim 1, characterized in that, The pair of connecting columns (3-2) can rotate in one direction through the pin connection with the connecting frame (3-3), and the maximum rotation angle between the connecting column (3-2) and the connecting frame (3-3) is 90°.

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