Bearing carriage for freight semitrailer

By adding a multi-functional unloading component and a counterweight structure to the semi-trailer's cargo box, the stability of the stake semi-trailer when loading high cargo and the unloading of bulk cargo have been solved, achieving flexible transport adaptability and convenient unloading.

CN121734522AActive Publication Date: 2026-03-27LONGYAN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-02
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing stake semi-trailers have limited cargo compartment functionality and cannot be adjusted to meet different transport needs. They are particularly unstable when loading high cargo and cannot quickly and easily unload bulk cargo.

Method used

Design a cargo semi-trailer carrying compartment with added multi-functional unloading components, including unloading duct, mounting platform, support plate and counterweight, which are detachably connected to form unloading channel and counterweight structure to adapt to different transportation needs.

Benefits of technology

It achieves improved stability when loading high cargo and enables rapid unloading of bulk cargo, enhances the functionality and safety of the carriage, and ensures the stability and load-bearing capacity of the overall structure.

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Abstract

The invention relates to a bearing carriage for a freight semitrailer, comprising: a bearing carriage body comprising a bearing base, a front side plate, a side baffle plate and a carriage door body; the multifunctional discharging assembly comprises a plurality of discharging guide pipes which are fixedly connected to the two sides of the bearing base in a communicating mode at intervals, first embedding platforms are arranged at the positions, corresponding to the discharging guide pipes, of the bearing base in an inwards-concave mode, and corresponding connecting ring plates are detachably installed on the upper sides of the first embedding platforms; corresponding second embedding platforms are upwards arranged on the bottom sides of the connecting ring plates respectively, and corresponding closed supporting plates are fixedly embedded in the bottom sides of the second embedding platforms respectively; the closed supporting plate is fixedly connected with supporting columns downwards, and the bottoms of the supporting columns are fixedly connected with integral supporting plates connected to the bottom of the discharging guide pipe respectively. According to the invention, the counterweight can be effectively carried out according to the requirements, so that the large cargo loading height can be effectively adapted, and bulk cargos can be quickly and conveniently unloaded according to the requirements.
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Description

Technical Field

[0001] This invention relates to the field of semi-trailer technology, specifically to a semi-trailer component, and more specifically to a cargo box for a freight semi-trailer. Background Technology

[0002] A semi-trailer is a trailer whose axle is located behind the vehicle's center of gravity (when the vehicle is evenly loaded) and is equipped with a coupling device that transmits horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, and there are many types. Among them, the stake semi-trailer is a semi-trailer with a stake structure design for the cargo compartment (carrying box), and it is mainly used for transporting agricultural and sideline products and other lightweight and bulky goods.

[0003] Existing semi-trailer cargo boxes typically consist of a base and a front panel fixed to the front of the base. Side panels and cargo doors are installed on the sides and rear of the base, respectively. Loading and unloading are primarily achieved by opening the cargo doors, although the side panels can be opened as needed. This type of semi-trailer cargo box has a limited function and cannot be adjusted to meet different transport requirements. For example, when the cargo is loaded at a high height, counterweights cannot be used to improve transport stability; or, when transporting bulk cargo, it cannot be unloaded quickly and conveniently as required.

[0004] Therefore, the research objective of this invention is to design a cargo semi-trailer that can effectively adjust the weight distribution according to needs, thereby lowering the center of gravity of the cargo box and thus effectively adapting to higher cargo loading heights, while ensuring the structural stability of the cargo box and without affecting its load-bearing capacity; and to effectively and quickly unload bulk cargo as needed when transporting bulk cargo, thereby significantly improving its functionality. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a cargo carrier for a freight semi-trailer, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is: A cargo carrier for a semi-trailer, characterized in that it comprises: The supporting carriage body includes a supporting base and a front side plate fixed to the front side of the supporting base. The two sides of the supporting base are respectively equipped with corresponding side baffles that can be opened and closed, and the rear sides of the side baffles are respectively equipped with corresponding carriage doors. A multifunctional unloading assembly includes several unloading conduits that are fixedly connected to both sides of a support base at intervals. The support base has corresponding first mounting platforms recessed at positions corresponding to the unloading conduits. A corresponding connecting ring plate is detachably installed on the upper side of each first mounting platform. A corresponding second mounting platform is provided on the bottom side of each connecting ring plate, facing upwards. A corresponding closed support plate is fixedly installed on the bottom side of each second mounting platform. The closed support plate, connecting ring plate, and top surface of the support base form a complete plane. A support column located inside the unloading conduit is fixedly connected to the bottom of each closed support plate. An integral support plate detachably connected to the bottom of the unloading conduit is fixedly connected to the bottom of each support column. Disconnect the integral support plate from the unloading conduit, and move the integral support plate, support column and closed support plate down so that the unloading conduit connects to the bearing base to form a corresponding unloading channel.

[0007] A corresponding counterweight is fixedly placed within the space formed by the integral support plate and the unloading conduit.

[0008] The integral support plate, support column, and closed support plate are disassembled from the unloading conduit and the counterweight is removed. Then, the connecting ring plate is disassembled and installed at the bottom of the unloading conduit. The integral support plate, support column, and closed support plate are then inverted and installed into the unloading conduit, so that the closed support plate is fixedly embedded in the second mounting platform of the connecting ring plate and the integral support plate is fixedly embedded in the first mounting platform of the bearing base.

[0009] The connecting ring plate and the overall support plate are detachably installed to the bottom of the first mounting platform or the unloading conduit via bolt connection.

[0010] The supporting base includes a support frame and a fixed base plate laid on the support frame. The support frame includes a set of main support beams fixed at intervals to the middle of the bottom of the fixed base plate and a set of side support beams fixed to both sides of the bottom of the fixed base plate. Support beams for supporting the fixed base plate are fixed between the side support beams respectively. The support beams pass through and are fixed to the main support beams.

[0011] Several corresponding reinforcing beams are also fixedly connected between the main support beams.

[0012] The support base has corresponding columns fixedly connected to its two sides at intervals facing upwards. The side baffle includes several side baffle plates that can be opened and closed and installed between two adjacent columns.

[0013] The bottom of the side baffle is hinged to the bottom of two adjacent columns. Each column has a corresponding slot. Each side of the side baffle is rotatably mounted with a corresponding clamping rod. The top of the clamping rod is horizontally folded and has a locking part that matches the slot. After the side baffle is flipped upwards into place, the clamping rod is rotated so that its locking part engages with the corresponding slot.

[0014] Corresponding connecting rods are fixedly connected between the columns on the same side, and multiple corresponding canopy mounting rods are fixedly connected between the connecting rods at intervals.

[0015] The middle sections of the side baffles are each horizontally fixed with corresponding transverse reinforcing bars.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1) Based on the original carrying carriage body, the present invention adds a multi-functional unloading assembly, which includes a number of unloading conduits that are fixedly connected to both sides of the carrying base at intervals. The carrying base has a corresponding first mounting platform recessed at the position corresponding to the unloading conduit. A corresponding connecting ring plate is detachably installed on the upper side of the first mounting platform. A corresponding second mounting platform is set on the bottom side of the connecting ring plate facing upward. A corresponding closed support plate is fixedly installed on the bottom side of the second mounting platform. The closed support plate, the connecting ring plate and the top surface of the carrying base form a complete plane to ensure the smooth loading and unloading of goods. The closed support plate is fixedly connected to a support column located in the unloading conduit with the bottom of the closed support plate facing downward. An integral support plate that can be detachably connected to the bottom of the unloading conduit is fixedly connected to the bottom of the support column.

[0017] The fixed connection between the integral support plate and the unloading conduit provides stable support for the support column and the closed support plate. The closed support plate then provides stable support for the inner side of the connecting ring plate, which, in conjunction with the first mounting platform, provides stable support for the connecting ring plate. This ensures the overall structural stability of the invention without affecting the load-bearing capacity of the carriage. When unloading bulk cargo, the connection between the integral support plate and the unloading conduit can be disconnected as needed, and the integral support plate, support column, and closed support plate can be lowered. This allows the bulk cargo within the carriage to be unloaded through the unloading conduit. At this point, simply place the corresponding cargo loading container at the bottom of the unloading conduit to receive the bulk cargo.

[0018] 2) When the cargo to be transported is relatively high, counterweights can be placed in the space formed by the overall support plate and the unloading duct. This allows for effective counterweighting as needed, thereby lowering the center of gravity of the carriage and effectively accommodating stable transport of cargo with higher loading heights.

[0019] 3) Due to the special nature of some goods, such as bulk watermelons, which have a large self-weight and a small contact area with the support base, and the fact that the weight of the upper goods will also transfer to the goods located on the bottom side, if the bottom of the goods is exactly on the closed support plate, the entire force will be concentrated between the connection between the overall support plate and the unloading conduit. Once the connection between the overall support plate and the unloading conduit fails due to excessive force, there will be a significant transportation safety hazard. To address this, the present invention can further effectively detach the overall support plate, support column, and closed support plate from the unloading conduit and remove the counterweight; then, the connecting ring plate is disassembled and installed at the bottom of the unloading conduit; then, the overall support plate, support column, and closed support plate are inverted and installed into the unloading conduit, so that the closed support plate is fixedly embedded in the second mounting platform of the connecting ring plate and the overall support plate is fixedly embedded in the first mounting platform of the support base. At this point, most of the force on the overall support plate will be directly transferred to the first mounting platform, and the middle part will also have sufficient support under the action of the closed support plate and the support column, thus effectively adapting to the transportation of goods such as bulk watermelons, thereby effectively and significantly improving the adaptability of the invention.

[0020] 4) By introducing the support beams and reinforcing beams, this invention can not only effectively improve the support effect on the fixed base plate, but also significantly improve the integrity between a set of main support beams and a set of side support beams, thereby effectively ensuring the overall structural strength of the load-bearing base of this invention and ensuring the practical effect of this invention.

[0021] 5) With the cooperation of the locking part of the clamping rod and the slot on the column, the installation stability of the side baffle of the present invention can be effectively ensured. When the side baffle needs to be opened to assist in loading and unloading goods, the locking part of the clamping rod can be pushed out of the slot on the column by manual means, which is very convenient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the upper structure of the present invention.

[0024] Figure 3 This is a schematic diagram of the bottom structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the multifunctional unloading assembly of the present invention.

[0026] Figure 5 This is a diagram showing the usage state of the overall support plate installed on the first mounting platform.

[0027] Figure 6This is a schematic diagram showing the structure of the locking part of the clamping rod being fastened into the slot.

[0028] In the attached drawings: 1. Cargo carriage body, 101. Support base, 1011. Support frame, 1011. Main support beam, 10111. Side support beam, 10112. Support crossbeam, 10113. Reinforcing beam, 10114. Fixed base plate, 1012. Front side plate, 102. Side baffle, 103. Cargo door, 104. Multifunctional unloading assembly, 201. Unloading guide, 202. Connecting ring plate, 203. Closed support plate, 204. Support column, 205. Overall support plate, 3. First mounting platform, 4. Second mounting platform, 5. Counterweight, 6. Column, 7. Slot, 8. Clamping rod, 801. Connecting rod, 9. Canopy mounting rod, 10. Horizontal reinforcing steel bar, 11. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] refer to Figure 1-6 A cargo carrier for a semi-trailer, characterized in that it comprises: The supporting carriage body 1 includes a supporting base 101 and a front side plate 102 fixed to the front side of the supporting base 101. The two sides of the supporting base 101 are respectively equipped with corresponding side baffles 103 that can be opened and closed. The rear sides of the side baffles 103 are respectively equipped with corresponding carriage doors 104 that can be opened and closed. The multi-functional unloading assembly 2 includes a plurality of unloading conduits 201 that are fixedly connected to both sides of the support base 101 at intervals. The support base 101 has a corresponding first mounting platform 3 recessed at a position corresponding to the unloading conduit 201. A corresponding connecting ring plate 202 is detachably installed on the upper side of the first mounting platform 3. A corresponding second mounting platform 4 is provided on the bottom side of the connecting ring plate 202 facing upward. A corresponding closed support plate 203 is fixedly installed on the bottom side of the second mounting platform 4. The closed support plate 203, the connecting ring plate 202 and the top surface of the support base 101 form a complete plane. A support column 204 located in the unloading conduit 201 is fixedly connected to the bottom of the closed support plate 203 facing downward. An integral support plate 205 detachably connected to the bottom of the unloading conduit 201 is fixedly connected to the bottom of the support column 204. Disconnect the integral support plate 205 from the unloading conduit 201, and move the integral support plate 205, support column 204 and closed support plate 203 downward so that the unloading conduit 201 connects to the bearing base 101 to form a corresponding unloading channel.

[0031] A corresponding counterweight 5 is fixedly placed in the space formed by the integral support plate 205 and the unloading conduit 201.

[0032] Based on the original carrying carriage body 1, this invention adds a multi-functional unloading assembly 2. The closed support plate 203, connecting ring plate 202, and the top surface of the carrying base 101 form a complete plane to ensure smooth loading and unloading of goods. The fixed connection between the overall support plate 205 and the unloading conduit 201 provides stable support for the support column 204 and the closed support plate 203. The closed support plate 203 then provides stable support for the inner side of the connecting ring plate 202, which, in conjunction with the first mounting platform 3, provides stable support for the connecting ring plate 202, ensuring the overall structural stability of the invention without affecting the carriage's load-bearing capacity. When unloading bulk cargo, the connection between the integral support plate 205 and the unloading conduit 201 can be disconnected as needed, and the integral support plate 205, support column 204 and closed support plate 203 can be moved down, so that the bulk cargo in the carrying carriage body 1 can be discharged and unloaded through the unloading conduit 201. At this time, it is only necessary to place the corresponding cargo loading container on the bottom side of the unloading conduit 201 to receive the bulk cargo.

[0033] When the cargo to be transported is high, a counterweight 5 can be placed in the space formed by the overall support plate 205 and the unloading conduit 201 of the present invention. In this way, the counterweight can be effectively adjusted according to the needs, thereby lowering the center of gravity of the carriage to effectively adapt to the stable transport of cargo with a high loading height.

[0034] The integral support plate 205, support column 204, and closed support plate 203 are disassembled from the unloading conduit 201, and the counterweight 5 is removed. Then, the connecting ring plate 202 is disassembled and installed at the bottom of the unloading conduit 201. The integral support plate 205, support column 204, and closed support plate 203 are then inverted and installed into the unloading conduit 201, so that the closed support plate 203 is fixedly embedded in the second mounting platform 4 of the connecting ring plate 202, and the integral support plate 205 is fixedly embedded in the first mounting platform 3 of the bearing base 101.

[0035] The connecting ring plate 202 and the overall support plate 205 are respectively detachably installed to the first mounting platform 3 or the bottom of the unloading conduit 201 by means of bolt connection.

[0036] Because some goods are special, such as bulk watermelons, which are heavy and have a small contact area with the support base 101, and because the weight of the upper goods will also transfer to the goods located on the bottom, if the bottom of the goods is entirely on the closed support plate 203, all the force will be concentrated at the connection between the overall support plate 205 and the unloading conduit 201. If the connection between the overall support plate 205 and the unloading conduit 201 fails due to excessive force, a significant transportation safety hazard will occur. To this end, the present invention further enables the overall support plate 205, support column 204, and closed support plate 203 to be effectively disassembled from the unloading conduit 201, and the counterweight 5 to be removed. Then, the connecting ring plate 202 is disassembled and installed at the bottom of the unloading conduit 201. The overall support plate 205, support column 204, and closed support plate 203 are then inverted and installed into the unloading conduit 201, so that the closed support plate 203 is fixedly embedded in the second mounting platform 4 of the connecting ring plate 202, and the overall support plate 205 is fixedly embedded in the first mounting platform 3 of the bearing base 101. At this time, most of the force on the overall support plate 205 will be directly transferred to the first mounting platform 3, and its middle part will also have sufficient supporting force under the action of the closed support plate 203 and support column 204, thereby effectively adapting to the transportation of goods such as bulk watermelons, and effectively further and significantly improving the adaptability of the present invention.

[0037] The supporting base 101 includes a supporting frame 1011 and a fixed base plate 1012 laid and installed on the supporting frame 1011. The supporting frame 1011 includes a set of main supporting beams 10111 fixedly connected at intervals to the middle of the bottom of the fixed base plate 1012, and a set of side support beams 10112 fixedly connected to both sides of the bottom of the fixed base plate 1012. Support beams 10113 for supporting the fixed base plate 1012 are fixedly connected to each of the side support beams 10112. The support beams 10113 pass through and are fixedly connected to the main supporting beams 10111. Several corresponding reinforcing beams 10114 are also fixedly connected to each of the main supporting beams 10111.

[0038] By introducing the supporting beam 10113 and the reinforcing beam 10114, this invention can not only effectively improve the support effect on the fixed base plate 1012, but also significantly improve the integrity between a set of main support beams 10111 and a set of side support beams 10112, thereby effectively ensuring the overall structural strength of the bearing base 101 of this invention and ensuring the practical effect of this invention.

[0039] The support base 101 has corresponding columns 6 fixedly connected to its two sides at intervals facing upwards. The side baffle 103 includes several side baffle plates that can be opened and closed and installed between two adjacent columns 6.

[0040] The bottom of the side baffle is hinged to the bottom of two adjacent columns 6. Each column 6 is fixed with a corresponding slot 7. Each side of the side baffle is rotatably mounted with a corresponding clamping rod 8. The top of the clamping rod 8 is horizontally folded and has a locking part 801 that matches the slot 7. After the side baffle is flipped upwards into place, the clamping rod 8 is rotated so that its locking part 801 is engaged with the corresponding slot 7.

[0041] With the cooperation of the locking part 801 of the locking rod 8 and the slot 7 on the column 6, the installation stability of the side baffle of the present invention can be effectively ensured. When the side baffle needs to be opened to assist in loading and unloading goods, the locking part 801 of the locking rod 8 can be pushed out of the slot 7 on the column 6 by manual means, which is very convenient.

[0042] Corresponding connecting rods 9 are fixedly connected to the columns 6 on the same side, and multiple corresponding canopy mounting rods 10 are fixedly connected to the connecting rods 9 at intervals. The middle part of the side partition is horizontally fixed with corresponding transverse reinforcing steel bars 11.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention 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 that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A load carrying bed for a freight semi-trailer, characterised in that, include: The supporting carriage body (1) includes a supporting base (101) and a front side plate (102) fixed to the front side of the supporting base (101). The supporting base (101) has corresponding side baffles (103) that can be opened and closed on both sides. The rear sides of the side baffles (103) have corresponding carriage doors (104) that can be opened and closed. The multifunctional unloading assembly (2) includes a plurality of unloading conduits (201) that are fixedly connected to both sides of the bearing base (101) at intervals. The bearing base (101) has a corresponding first mounting platform (3) recessed at a position corresponding to the unloading conduit (201). A corresponding connecting ring plate (202) is detachably installed on the upper side of the first mounting platform (3). A corresponding second mounting platform (4) is provided on the bottom side of the connecting ring plate (202) facing upward. A corresponding closed support plate (203) is fixedly installed on the bottom side of the second mounting platform (4). A complete plane is formed between the closed support plate (203), the connecting ring plate (202) and the top surface of the bearing base (101). A support column (204) located in the unloading conduit (201) is fixedly connected to the bottom of the closed support plate (203) facing downward. An integral support plate (205) detachably connected to the bottom of the unloading conduit (201) is fixed to the bottom of the support column (204). Disconnect the integral support plate (205) from the unloading conduit (201), and move the integral support plate (205), support column (204) and closed support plate (203) down so that the unloading conduit (201) connects to the bearing base (101) to form a corresponding unloading channel.

2. A load-carrying bed for a freight semi-trailer according to claim 1, characterized in that A corresponding counterweight (5) is fixedly placed in the space formed by the integral support plate (205) and the unloading conduit (201).

3. A load-carrying bed for a goods transport semitrailer according to claim 2, characterized in that The integral support plate (205), support column (204) and closed support plate (203) are completely removed from the unloading conduit (201), and the counterweight (5) is removed; then the connecting ring plate (202) is disassembled and installed at the bottom of the unloading conduit (201), and the integral support plate (205), support column (204) and closed support plate (203) are inverted and installed into the unloading conduit (201), so that the closed support plate (203) is fixedly embedded in the second mounting platform (4) of the connecting ring plate (202), and the integral support plate (205) is fixedly embedded in the first mounting platform (3) of the bearing base (101).

4. A cargo transport semi-trailer load carrying bed according to claim 3, characterised in that, The connecting ring plate (202) and the integral support plate (205) are respectively detachably installed to the bottom of the first mounting platform (3) or the unloading conduit (201) by means of bolt connection.

5. A cargo transport trailer load bed according to claim 1, characterized in that The bearing base (101) comprises a support framework (1011) and a fixed bottom plate (1012) installed on the support framework (1011), the support framework (1011) comprises a plurality of main support beams (10111) fixedly connected to the middle of the bottom of the fixed bottom plate (1012) and a plurality of side support beams (10112) fixedly connected to the both sides of the bottom of the fixed bottom plate (1012), a plurality of support cross beams (10113) for supporting the fixed bottom plate (1012) are respectively fixedly connected between a plurality of the side support beams (10112), and the support cross beams (10113) penetrate through and are fixedly connected to the main support beams (10111).

6. A cargo transport semi-trailer load carrying bed according to claim 5, characterised in that, A plurality of corresponding reinforcing beams (10114) are fixedly connected between a plurality of the main support beams (10111).

7. A cargo transport trailer load bed according to claim 1, characterized in that Corresponding columns (6) are fixedly connected to the both sides of the bearing base (101) in a spaced manner, the side blocking plate (103) comprises a plurality of side blocking sub-plates which can be opened and closed and are installed between adjacent two columns (6).

8. A cargo transport semi-trailer load carrying bed according to claim 7, characterised in that, The bottom side of each side blocking sub-plate is hingedly connected between the bottom of adjacent two columns (6), a corresponding clamping groove (7) is fixedly connected to each column (6), a corresponding clamping rod (8) is rotatably installed on the both sides of each side blocking sub-plate, a clamping portion (801) which is matched with the clamping groove (7) is horizontally and foldedly arranged at the top of the clamping rod (8), and the clamping portion (801) of the clamping rod (8) is buckled into the corresponding clamping groove (7) by rotating the clamping rod (8) after the side blocking sub-plate is upwardly turned to a position.

9. A cargo transport semi-trailer load carrying bed according to claim 7, characterised in that, Corresponding connecting rods (9) are fixedly connected between the columns (6) on the same side, and a plurality of corresponding awning installation rods (10) are fixedly connected between the connecting rods (9) in a spaced manner.

10. A cargo transport trailer load bed according to claim 7, characterized in that Corresponding horizontal reinforcing steel bars (11) are horizontally fixedly connected to the middle portions of the side blocking sub-plates.

Citation Information

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