Van type trailer
By designing a box trailer with a lifting device and a hydraulic tipping system, the problem of traditional semi-trailer cargo box loading and unloading relying on hoisting devices has been solved, realizing a convenient and efficient cargo box loading and unloading process, and reducing costs and safety risks.
Patent Information
- Application Number
- CN202422988180.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-04
AI Technical Summary
The traditional semi-trailer cargo loading and unloading process relies on hoisting equipment, which increases costs, operational complexity, and safety risks, and occupies additional workspace.
Design a box trailer that includes a cargo box and a lifting device. The lifting device enables the cargo box to be raised and lowered, and the trailer chassis can be flipped by combining a hydraulic cylinder and a manual pump, thus simplifying the loading and unloading process of the cargo box.
It enables convenient loading and unloading of cargo compartments, reduces additional equipment costs and operational complexity, and improves safety and space utilization efficiency.
Smart Images
Figure CN223508390U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of semi-trailer technology, specifically relating to a box trailer. Background Technology
[0002] In the field of semi-trailer technology, traditional methods of loading or unloading cargo boxes typically involve using a hoisting device to lift the cargo box, thereby assembling or separating the cargo box from the semi-trailer. This process relies on the hoisting device; therefore, it is an indispensable piece of equipment for assembling or unloading the cargo box from the semi-trailer. Users need to purchase hoisting devices separately, which not only increases costs but may also involve additional operational complexity and safety risks. Furthermore, the operation of hoisting devices requires additional floor space. Utility Model Content
[0003] In view of the above, this utility model discloses a box trailer, the specific solution of which is as follows:
[0004] A box trailer includes a cargo box and a lifting device;
[0005] The cargo box includes a cargo box body, a front crossbeam, and cargo box longitudinal beams; both the front crossbeam and the cargo box longitudinal beams are square tube structures and are both located on the bottom surface of the cargo box body; the front crossbeam is located at the front end of the bottom surface of the cargo box body, and there are two sets of cargo box longitudinal beams located at both ends of the width direction of the bottom surface of the cargo box body, respectively; the front ends of both sets of cargo box longitudinal beams are fixedly connected to the side wall of the front crossbeam, and the rear ends of both sets of cargo box longitudinal beams are located at the rear end of the cargo box body.
[0006] The lifting device includes a fixed column, column support legs, end caps, screws, gears, worm gears, lifting supports, and lifting arms;
[0007] The fixed column is a square tube structure, with column feet located at the lower end of the fixed column. The screw is located inside the fixed column, and its lower end is connected to the column feet via a bearing. The gear is fixed to the upper part of the screw. The end cap is located at the upper end of the fixed column, and a worm gear is installed inside the end cap. The worm gear is connected to the end cap via a bearing, and the worm gear meshes with the gear. The lifting support is a square tube structure, which is sleeved on the screw. A nut that is screwed to the screw is fixed on the lifting support. A vertical slot is opened on one side wall of the fixed column. The lifting arm is located outside the fixed column and is connected to the lifting support.
[0008] As a supplement to the technical solution of this utility model, the lifting device also includes a guide wheel, which is disposed on the side wall of the lifting support.
[0009] As a supplement to the technical solution of this utility model, the lifting device also includes a reinforcing plate. One end of the reinforcing plate passes through a vertical slot on the side wall of the fixed column and is connected to the fixed support. The other end of the reinforcing plate is connected to the lifting arm. The reinforcing plate has a triangular structure.
[0010] As a supplement to the technical solution of this utility model, it also includes a trailer chassis, tires, and a towing frame;
[0011] The trailer chassis includes chassis longitudinal beams, chassis cross beams, and chassis panel. There are two sets of chassis longitudinal beams located on both sides of the chassis panel. The chassis cross beams are transversely arranged at the bottom of the chassis panel. The towing frame is located on the front side of the trailer chassis, and the rear end of the towing frame is connected to the chassis longitudinal beams. The tires are mounted on the trailer chassis. The cargo box longitudinal beams are bolted to the chassis longitudinal beams of the trailer chassis.
[0012] As a supplement to the technical solution of this utility model, it also includes a hydraulic cylinder and a manual pump;
[0013] The rear end of the towing frame is hinged to the longitudinal beam of the chassis. The hydraulic cylinder and the manual pump are both mounted on the towing frame. The manual pump is connected to the hydraulic cylinder. One end of the hydraulic cylinder is hinged to the towing frame, and the other end of the hydraulic cylinder is hinged to the crossbeam of the trailer chassis.
[0014] As a supplement to the technical solution of this utility model, a winch system is also included. The winch system includes a fixed beam and a winch. One end of the fixed beam is fixed to the front end of the trailer chassis by bolts, and the other end of the fixed beam is provided with a winch.
[0015] Beneficial effects: The box trailer disclosed in this utility model can realize the lifting and lowering of the cargo box through a lifting device, and complete the assembly and disassembly of the cargo box. In another aspect of this utility model, by setting up a hydraulic cylinder and a manual pump, a tilting function with the rear end of the trailer chassis facing downwards is realized with the tires as the axle, which facilitates the transfer of heavier goods to the trailer chassis. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 This is a cross-sectional structural diagram of the cargo compartment of this utility model.
[0018] Figure 3 This is a schematic diagram of the lifting device structure of this utility model.
[0019] Figure 4 This is a cross-sectional structural diagram of the lifting device of this utility model.
[0020] Figure 5 This is a schematic diagram of the lifting device structure of this utility model.
[0021] Figure 6 This is a cross-sectional structural diagram of the lifting device of this utility model.
[0022] Figure 7 This is a schematic diagram of the trailer chassis structure of this utility model.
[0023] Figure 8 This is a schematic diagram of the trailer chassis structure of this utility model.
[0024] In the diagram: 1. Cargo box body, 2. Front crossbeam, 3. Cargo box longitudinal beam, 4. Lifting device, 5. Fixed column, 6. Column support, 7. End cover, 8. Screw, 9. Gear, 10. Worm gear, 11. Lifting support, 12. Lifting arm, 13. Guide wheel, 14. Reinforcing connecting plate, 15. Trailer chassis, 16. Tire, 17. Towing frame, 18. Hydraulic cylinder, 19. Manual pump, 20. Fixed beam, 21. Winch, 22. Chassis longitudinal beam, 23. Chassis crossbeam, 24. Chassis panel. Detailed Implementation
[0025] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] like Figures 1 to 8 As shown, a box trailer includes a cargo box and a lifting device 4;
[0028] The cargo box includes a cargo box body 1, a front crossbeam 2, and cargo box longitudinal beams 3.
[0029] The cargo box body 1 is a box structure used to accommodate goods. The front crossbeam 2 and the cargo box longitudinal beam 3 are both square tube structures and are both set on the bottom surface of the cargo box body 1.
[0030] The front crossbeam 2 is located at the front end of the lower bottom surface of the cargo box body 1. Two sets of longitudinal beams 3 are provided, located at both ends of the width direction of the lower bottom surface of the cargo box body 1. The front ends of both sets of longitudinal beams 3 are fixedly connected to the side wall of the front crossbeam 2. Preferably, the connection is made by welding. The rear ends of the two sets of longitudinal beams 3 are located at the rear end of the cargo box body 1.
[0031] The lifting device 4 includes a fixed column 5, column support legs 6, end caps 7, screws 8, gears 9, worm gears 10, lifting support 11, and lifting arm 12.
[0032] The fixed column 5 is a square tube structure, the column support 6 is set at the lower end of the fixed column 5, the screw 8 is set inside the fixed column 5 and its lower end is connected to the column support 6 through a bearing, so that the screw 8 can rotate, and the gear 9 is fixed to the upper part of the screw 8. The rotation of the gear 9 can drive the screw 8 to rotate.
[0033] The end cap 7 is located at the upper end of the fixed column 5. The end cap 7 is equipped with a worm gear 10. The worm gear 10 is connected to the end cap 7 through a bearing. The end cap 7 has an opening in the middle. The gear 9 is located at the opening in the middle of the end cap 7. The worm gear 10 inside the end cap 7 meshes with the gear 9, so that the rotation of the worm gear 10 drives the rotation of the gear 9. One end of the worm gear 10 is located outside the end cap 7.
[0034] The lifting support 11 is a square tube structure, which is sleeved on the screw 8. A nut that is screwed to the screw 8 is fixed on the lifting support 11. In order to ensure that the lifting support 11 can move up and down on the screw 8 as the screw 8 rotates, the diameter of the inscribed circle of the fixed column 5 should be less than the length of the diagonal of the lifting support 11.
[0035] A vertical slot is provided on one side wall of the fixed column 5, and the lifting arm 12 is located outside the fixed column 5 and is connected to the lifting support 11.
[0036] With the above setup, when the cargo box needs to be disassembled, since both the front crossbeam 2 and the cargo box longitudinal beam 3 are square tube structures, four sets of lifting devices 4 are required. The lifting arms 12 of the four sets of lifting devices 4 are inserted into both ends of the front crossbeam 2 and the rear ends of the two sets of cargo box longitudinal beams 3, respectively. At the same time, the worm gear 10 of the four sets of lifting devices 4 is rotated to drive the lifting support 11 to rise, so that the lifting arms 12 provide lifting force to the front crossbeam 2 and the cargo box longitudinal beam 3, thereby lifting the cargo box body 1 and separating it from the trailer chassis. After separation, the trailer can be driven away from under the cargo box body 1, and the four sets of lifting devices 4 maintain the supporting state of the cargo box body.
[0037] When the trailer needs to be assembled with the cargo box body 1, the trailer will be started, and the trailer chassis 15 will be moved to the bottom of the cargo box body 1. At the same time, the worm gear 10 of the four sets of lifting devices 4 will be rotated, driving the lifting support 11 to descend, so that the cargo box body 1 falls onto the trailer chassis 15.
[0038] By positioning the front crossbeam 2 and the longitudinal beam 3 of the cargo box, the four sets of lifting devices 4 are located at the four corners of the cargo box body 1, thereby improving the load-bearing capacity.
[0039] As a preferred embodiment of this invention, the lifting device 4 further includes a guide wheel 13, which is mounted on the side wall of the lifting support 11 via a rotating shaft. The guide wheel 13 prevents direct contact between the lifting support 11 and the fixed column 5, and prevents sliding friction between the lifting support 11 and the fixed column 5 that could lead to wear. Simultaneously, when the lifting support 11 is raised or lowered, the guide wheel 13 contacts the inner side wall of the fixed column 5, replacing the sliding friction between the lifting column and the fixed column 5 with rolling friction between the guide wheel 13 and the fixed column 5.
[0040] As a preferred technical solution of this utility model, the lifting device 4 further includes a reinforcing connecting plate 14, one end of which passes through a vertical slot on the side wall of the fixed column 5 and is connected to the fixed support.
[0041] The other end of the reinforcing connecting plate 14 is connected to the lifting arm 12, and the reinforcing connecting plate 14 has a triangular structure. By setting the reinforcing connecting plate 14, the overall structural stability of the lifting arm 12, the reinforcing connecting plate 14, and the lifting support 11 is achieved.
[0042] In the above technical solution, the lifting arm 12 is inserted into the square tube of the front crossbeam 2 and the cargo box longitudinal beam 3 to achieve lifting and lowering of the cargo box body 1. The lifting arm 12 of the lifting device 4 can be fixedly connected to the front crossbeam 2 / cargo box longitudinal beam 3 by bolts, raising the outriggers of the lifting device 4 without affecting the normal driving of the trailer. At the same time, the lifting arm 12 can also be inserted into the square tube of the front crossbeam 2 and the cargo box longitudinal beam 3 only when in use.
[0043] As a preferred technical solution of this utility model, it includes the above-mentioned cargo box lifting system, trailer chassis 15, tires 16, and towing frame 17.
[0044] The trailer chassis 15 includes chassis longitudinal beams 22, chassis cross beams 23, and chassis panel 24. The chassis longitudinal beams 22 are provided in two sets and located on both sides of the chassis panel 24. The chassis cross beams 23 are arranged laterally at the bottom of the chassis panel 24.
[0045] The towing frame 17 is located on the front side of the trailer chassis 15, and the rear end of the towing frame 17 is connected to the chassis longitudinal beam 22.
[0046] The tire 16 is mounted on the trailer chassis 15.
[0047] The longitudinal beam 3 of the cargo box is connected to the longitudinal beam 22 of the chassis of the trailer chassis 15 by bolts.
[0048] As a preferred technical solution of this utility model, it also includes a hydraulic cylinder 18 and a manual pump 19.
[0049] The rear end of the towing frame 17 is hinged to the chassis longitudinal beam 22. The hydraulic cylinder 18 and the manual pump 19 are both mounted on the towing frame 17. The manual pump 19 is connected to the hydraulic cylinder 18. One end of the hydraulic cylinder 18 is hinged to the towing frame 17, and the other end is hinged to the chassis crossbeam of the trailer chassis 15. This configuration allows for a downward tilting function of the trailer chassis 15 with the tire 16 as the axle, facilitating the transfer of heavier cargo onto the trailer chassis 15. The tilting angle of the trailer chassis 15 is controlled by the extension and retraction of the piston rod of the hydraulic cylinder 18 driven by the manual pump 19.
[0050] As a preferred embodiment of this invention, a winch system 21 is also included. The winch system 21 comprises a fixed beam 20 and a winch 21. One end of the fixed beam 20 is bolted to the front end of the trailer chassis 15, and the other end of the fixed beam 20 is equipped with the winch 21. With the winch system 21, when used for loading motorcycles, the winch 21 can tow the motorcycle, allowing it to move smoothly onto the trailer.
[0051] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the protection scope of the present invention.
Claims
1. A box trailer, characterized in that, Includes cargo box and lifting device (4); The cargo box includes a cargo box body (1), a front crossbeam (2), and cargo box longitudinal beams (3); the front crossbeam (2) and cargo box longitudinal beams (3) are both square tube structures and are both set on the bottom surface of the cargo box body (1); the front crossbeam (2) is located at the front end of the bottom surface of the cargo box body (1), and the cargo box longitudinal beams (3) are provided in two sets and are located at both ends of the width direction of the bottom surface of the cargo box body (1), the front ends of the two sets of cargo box longitudinal beams (3) are fixedly connected to the side wall of the front crossbeam (2), and the rear ends of the two sets of cargo box longitudinal beams (3) are located at the rear end of the cargo box body (1); The lifting device (4) includes a fixed column (5), column support (6), end cap (7), screw (8), gear (9), worm gear (10), lifting support (11), and lifting arm (12). The fixed column (5) is a square tube structure. The column support (6) is located at the lower end of the fixed column (5). The screw (8) is located inside the fixed column (5) and its lower end is connected to the column support (6) through a bearing. The gear (9) is fixed to the upper part of the screw (8). The end cap (7) is located at the upper end of the fixed column (5). The end cap (7) is provided with a worm gear (10). The worm gear (10) is connected to the end cap (7) through a bearing, and the worm gear (10) meshes with the gear (9). The lifting support (11) is a square tube structure. It is sleeved on the screw (8). The lifting support (11) is fixed with a nut that is screwed to the screw (8). A vertical slot is opened on one side wall of the fixed column (5). The lifting arm (12) is located outside the fixed column (5) and is connected to the lifting support (11).
2. A box trailer according to claim 1, characterized in that, The lifting device (4) also includes a guide wheel (13), which is disposed on the side wall of the lifting support (11).
3. A box trailer according to claim 1, characterized in that, The lifting device (4) also includes a reinforcing plate (14). One end of the reinforcing plate (14) passes through a vertical slot on the side wall of the fixed column (5) and is connected to the fixed support. The other end of the reinforcing plate (14) is connected to the lifting arm (12). The reinforcing plate (14) has a triangular structure.
4. A box trailer according to claim 1, characterized in that, It also includes trailer chassis (15), tires (16), and towing frame (17). The trailer chassis (15) includes chassis longitudinal beams (22), chassis cross beams (23), and chassis panel (24). The chassis longitudinal beams (22) are provided in two sets and located on both sides of the chassis panel (24). The chassis cross beams (23) are arranged laterally at the bottom of the chassis panel (24). The towing frame (17) is arranged on the front side of the trailer chassis (15). The rear end of the towing frame (17) is connected to the chassis longitudinal beams (22). The tires (16) are arranged on the trailer chassis (15). The cargo box longitudinal beams (3) of the cargo box are connected to the chassis longitudinal beams (22) of the trailer chassis (15) by bolts.
5. A box trailer according to claim 4, characterized in that, It also includes hydraulic cylinders (18) and manual pumps (19); The rear end of the towing frame (17) is hinged to the chassis longitudinal beam (22). The hydraulic cylinder (18) and the manual pump (19) are both mounted on the towing frame (17). The manual pump (19) is connected to the hydraulic cylinder (18). One end of the hydraulic cylinder (18) is hinged to the towing frame (17), and the other end of the hydraulic cylinder (18) is hinged to the chassis crossbeam of the trailer chassis (15).
6. A box trailer according to claim 5, characterized in that, It also includes a winch (21) system, which includes a fixed beam (20) and a winch (21). One end of the fixed beam (20) is fixed to the front end of the trailer chassis (15) by bolts, and the other end of the fixed beam (20) is provided with a winch (21).