Trailer for realizing lifting of cargo carrying platform by using hydraulic mechanism

Abstract

The utility model is applicable to the technical field of trailers, and provides a trailer using a hydraulic mechanism to lift a cargo carrying platform, which comprises an oil pump, an axle, a bearing seat, a hydraulic rod, a frame and tires, swing arm assemblies are arranged on the outer walls of two ends of the axle, hubs are arranged on the outer walls of the swing arm assemblies, the tires are mounted on the outer walls of the hubs, and the hydraulic rod is arranged on the bearing seat. When the trailer runs normally, the hydraulic rod is in an extending state and is locked, the frame is located at a high position, enough ground clearance and trafficability are guaranteed, when goods need to be loaded and unloaded, the telescopic end of the hydraulic rod is controlled by the oil pump to contract, and the axle can rotate around the bearing seat due to contraction of the hydraulic rod, so that the goods can be loaded and unloaded. And after the goods are loaded and unloaded, oil is injected into the hydraulic rod through the oil pump, the telescopic end of the hydraulic rod extends, and the frame is lifted to a normal driving position.

Description

Technical Field

[0001] The utility model belongs to the technical field of trailers, and particularly relates to a trailer that uses a hydraulic mechanism to realize the lifting of a cargo platform. Background Technique

[0002] A trailer is a vehicle without its own power and needs to be towed by an automobile. Trailers have low costs and are an important means to achieve economic transportation.

[0003] When loading and unloading goods on a traditional trailer, due to the excessive height of the trailer's cargo platform, it is very difficult to load and unload goods. However, if the cargo platform is made very low, it will affect the ground clearance and passability of the vehicle.

[0004] For the lifting of the existing trailer cargo platform, either a general hydraulic lifting device is used, which has problems such as complex structure and unstable frame fixation, or airbag lifting is adopted, which requires additional air pressure devices to be installed. Summary of the Utility Model

[0005] The utility model provides a trailer that uses a hydraulic mechanism to realize the lifting of a cargo platform, aiming to solve the problems that when using a general hydraulic lifting device for the lifting of the existing trailer cargo platform, there are problems such as complex structure and unstable frame fixation.

[0006] The utility model is implemented as follows. A trailer that uses a hydraulic mechanism to realize the lifting of a cargo platform includes an oil pump, an axle, a bearing seat, a hydraulic rod, a frame, and tires. Swing arm assemblies are arranged on the outer walls at both ends of the axle, and wheels are arranged on the outer walls of the swing arm assemblies. The tires are installed on the outer walls of the wheels. Bearing seats are respectively arranged at both ends of the axle, and the bearing seats are fixedly connected to the frame.

[0007] Preferably, there are two axles, and the bearing seats are bolted to the frame.

[0008] Preferably, a bracket is fixedly connected to the outer wall of the axle, and both ends of the hydraulic rod are hinged to the bracket. The oil pump supplies oil to the two hydraulic rods, and the oil pump is driven in an electric or manual manner.

[0009] Preferably, the axle includes an axle tube, and elastic elements are arranged on the inner wall of the axle tube. The swing arm assembly is rotatably connected to the axle tube, and the elastic elements are metal sheet torsion springs or circular metal torsion rods.

[0010] Preferably, a metal bushing is arranged on the inner wall of the bearing seat, and the bearing seat is sleeved on the outer wall of the axle tube. The axle can rotate around the bearing seat.

[0011] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0012] When the trailer is driving normally, the hydraulic rod is in the extended state and locked, so that the frame is at a relatively high position, ensuring sufficient ground clearance and passing ability. When loading and unloading goods are required, the telescopic end of the hydraulic rod is controlled to contract by the oil pump. The contraction of the hydraulic rod causes the axle to rotate around the bearing seat, so that the swing arm assembly rotates upward together with the tire, and the frame is lowered in height, facilitating the loading and unloading of goods. After the loading and unloading of goods are completed, the oil pump injects oil into the hydraulic rod, and the telescopic end of the hydraulic rod extends, and the frame rises to the normal driving position. Brief Description of the Drawings

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 is a schematic diagram of the lifting structure of the cargo-carrying platform of the present invention;

[0015] Figure 3 is a schematic diagram of the lowering structure of the load platform of the present invention;

[0016] Figure 4 is a three-dimensional enlarged structural schematic diagram of the axle of the present invention;

[0017] In the figure: 1, oil pump; 2, axle; 3, bearing seat; 4, hydraulic rod; 5, frame; 6, tire; 7, swing arm assembly; 8, hub; 9, elastic element; 10, axle tube. Detailed Embodiment

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0019] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0020] An embodiment of the present invention provides a trailer that uses a hydraulic mechanism to realize the lifting of a cargo-carrying platform, as Figures 1-4As shown in the figure, it includes an oil pump 1, an axle 2, a bearing housing 3, a hydraulic rod 4, a vehicle frame 5 and a tire 6. Swing arm assemblies 7 are provided on the outer walls at both ends of the axle 2, and hubs 8 are provided on the outer walls of the swing arm assemblies 7. The tire 6 is installed on the outer wall of the hub 8. Bearing housings 3 are respectively provided at both ends of the axle 2, and the bearing housings 3 are fixedly connected to the vehicle frame 5.

[0021] It should be noted that since the lifting of the existing trailer cargo platform uses a general hydraulic lifting device, there are problems of complex structure and unstable fixing of the vehicle frame. Therefore, in order to solve the problems of complex structure and unstable fixing of the vehicle frame in the lifting of the existing trailer cargo platform or the use of a general hydraulic lifting device, in the normal driving of the trailer, the hydraulic rod 4 is in the extended state and locked, so that the vehicle frame 5 is at a relatively high position to ensure sufficient ground clearance and passing performance. When loading and unloading goods are required, the telescopic end of the hydraulic rod 4 is controlled to contract by the oil pump 1. The contraction of the hydraulic rod 4 will cause the axle 2 to rotate around the bearing housing 3, so that the swing arm assembly 7 together with the tire 6 rotates to an upward angle, and the vehicle frame 5 lowers its height to facilitate loading and unloading of goods. After the loading and unloading of goods are completed, the oil pump 1 injects oil into the hydraulic rod 4, and the telescopic end of the hydraulic rod 4 extends, and the vehicle frame 5 rises to the normal driving position.

[0022] In a further preferred embodiment of the present invention, as Figure 1 shown, there are two axles 2, and the bearing housings 3 are bolted to the vehicle frame 5.

[0023] In this embodiment, the bolted connection between the bearing housing 3 and the vehicle frame 5 facilitates the disassembly and assembly of the bearing housing 3 on the vehicle frame 5.

[0024] In a further preferred embodiment of the present invention, as Figure 1 shown, a bracket is fixedly connected to the outer wall of the axle 2, and both ends of the hydraulic rod 4 are hinged to the bracket. The oil pump 1 supplies oil to the two hydraulic rods 4, and the oil pump 1 is driven in an electric or manual manner.

[0025] In this embodiment, the oil pump 1 driven in an electric or manual manner facilitates the operation of the oil pump 1 by personnel.

[0026] In a further preferred embodiment of the present invention, as Figure 4 shown, the axle 2 includes an axle tube 10, and an elastic element 9 is provided on the inner wall of the axle tube 10. The swing arm assembly 7 is rotatably connected to the axle tube 10, and the elastic element 9 is a metal sheet torsion spring or a circular metal torsion rod.

[0027] In this embodiment, the elastic element 9 provided inside the axle 2 is used for shock absorption, and the elastic element 9 is a combination of sheet metal torsion pieces or a circular metal torsion rod.

[0028] In a further preferred embodiment of the present invention, as Figure 1As shown, a metal bushing is provided on the inner wall of the bearing housing 3, and the bearing housing 3 is sleeved on the outer wall of the axle tube 10. The axle 2 can rotate around the bearing housing 3.

[0029] In this embodiment, the wear resistance of the inner wall of the bearing housing 3 is improved by the metal bushing.

[0030] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0031] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above-mentioned unit division can have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the shown or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0032] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present invention according to the situation without creative work, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A trailer that uses a hydraulic mechanism to achieve the lifting of a cargo platform, characterized in that, It includes an oil pump (1), an axle (2), a bearing seat (3), a hydraulic rod (4), a vehicle frame (5) and a tire (6). At both ends of the outer wall of the axle (2), swing arm assemblies (7) are provided, and hubs (8) are provided on the outer walls of the swing arm assemblies (7). The tire (6) is installed on the outer wall of the hub (8). At both ends of the axle (2), bearing seats (3) are respectively provided, and the bearing seats (3) are fixedly connected to the vehicle frame (5).

2. The trailer using a hydraulic mechanism to realize the lifting of the cargo platform as claimed in claim 1, wherein There are two axles (2), and the bearing seats (3) are bolted to the vehicle frame (5).

3. A trailer using a hydraulic mechanism to realize the lifting of a cargo platform as claimed in claim 1, wherein, A bracket is fixedly connected to the outer wall of the axle (2), and both ends of the hydraulic rod (4) are hinged to the bracket. The oil pump (1) supplies oil to the two hydraulic rods (4), and the oil pump (1) is driven in an electric or manual manner.

4. A trailer using a hydraulic mechanism to achieve the lifting of a cargo platform as described in claim 3, wherein, The axle (2) includes a shaft tube (10), and an elastic element (9) is provided on the inner wall of the shaft tube (10). The swing arm assembly (7) is rotatably connected to the shaft tube (10), and the elastic element (9) is a metal sheet torsion spring or a circular metal torsion rod.

5. A trailer using a hydraulic mechanism to achieve the lifting of a cargo platform, characterized in that, A metal bushing is provided on the inner wall of the bearing seat (3), and the bearing seat (3) is sleeved on the outer wall of the shaft tube (10). The axle (2) can rotate around the bearing seat (3).

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