Container transfer vehicle oil gas suspension structure

Abstract

The utility model relates to the structure field of transfer trolley, especially a container transfer trolley oil gas suspension structure. The suspension structure includes drive axle, rim and oil gas damping component, two rims are symmetrically arranged on the left and right sides of drive axle, and two oil gas damping components are symmetrically arranged on one side of drive axle; the oil gas damping component includes oil cylinder, high pressure chamber and low pressure chamber, one end of oil cylinder is rotatably connected with drive axle, the other end of oil cylinder is rotatably connected with the bottom of container transfer trolley, and high pressure chamber and low pressure chamber are all communicated with oil cylinder. The utility model designs oil gas damping component to carry out buffering action and supporting action for suspension, sets up high pressure chamber and low pressure chamber respectively to refine the buffering capacity and realizes accurate regulation, the damping effect is better, increases the suspension height adjusting function while increasing the suspension buffering capacity range, cancels the connecting pipeline between high pressure chamber and oil cylinder, adopts integral transmission, and is more suitable for container scene transfer trolley type in wharf.

Description

Technical Field

[0001] This utility model relates to the field of transport vehicle structure, and in particular to a hydropneumatic suspension structure for a container transport vehicle. Background Technology

[0002] Most existing transport vehicle suspensions use leaf spring damping. Leaf spring damping has weak filtering ability for road bumps, and its elastic curve is non-linear. It has low stiffness under low load and high stiffness under high load. This causes the suspension performance to fluctuate greatly with the load, making it difficult to achieve precise adjustment. Therefore, a hydropneumatic suspension structure for container transport vehicles is needed. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a hydropneumatic suspension structure for container transport vehicles, which has the advantages of better vehicle stability and shock absorption during cornering, and facilitates precise adjustment.

[0004] This utility model provides a hydropneumatic suspension structure for a container transfer vehicle, which is located at the bottom of the container transfer vehicle and includes a drive axle, wheel rims, and hydropneumatic shock absorbers. Two wheel rims are symmetrically arranged on the left and right sides of the drive axle, and two hydropneumatic shock absorbers are symmetrically arranged on one side of the drive axle. The hydropneumatic shock absorber includes a cylinder, a high-pressure chamber, and a low-pressure chamber. One end of the cylinder is rotatably connected to the drive axle, and the other end of the cylinder is rotatably connected to the bottom of the container transfer vehicle. The high-pressure chamber and the low-pressure chamber are both connected to the cylinder. The high-pressure chamber and the low-pressure chamber work together to buffer the cylinder's contraction or drive its extension.

[0005] Furthermore, the drive axle includes a drive assembly, a tie rod seat, and a connecting section. Two prism-shaped tie rod seats are symmetrically arranged on the left and right sides of the drive assembly. The connecting section rotatably connects the tie rod seat to the wheel rim. The drive assembly passes through the tie rod seat and the connecting section and controls the rotation of the wheel rim. One end of the hydraulic cylinder is rotatably connected to the rear side of the tie rod seat.

[0006] Furthermore, the cylinder includes a sleeve and a piston rod. The sleeve is fitted onto the piston rod, and one end of the piston rod is provided with an oil return channel. Both the high-pressure chamber and the low-pressure chamber include a sleeve and a piston. The sleeve is located on one side of the sleeve and the connection between the two is open. The piston is located inside the sleeve and the side of the piston away from the connection between the sleeve and the sleeve is connected to an external gas inlet device.

[0007] Furthermore, the suspension structure also includes a thrust rod rotatably mounted on top of the drive assembly.

[0008] Furthermore, the suspension structure also includes an auxiliary push rod, which is rotatably connected to the front side of the tie rod seat.

[0009] By adopting the above technical solution, the beneficial effects of this utility model are: This utility model designs an oil-gas shock absorber assembly for the suspension to perform buffering or supporting actions. It is equipped with high-pressure chambers and low-pressure chambers to refine its buffering capacity and achieve precise adjustment, resulting in better shock absorption. It increases the range of suspension buffering capacity and adds suspension height adjustment function. The connecting pipeline between the high-pressure chambers and the oil cylinder is eliminated, and an integrated transmission is adopted, which effectively reduces the space occupied by the oil-gas shock absorber assembly and is more suitable for container transfer vehicles at docks.

[0010] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0011] Undoubtedly, such and other objects of this invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and illustrations.

[0012] To make the above and other objects, features and advantages of this utility model more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a container transfer vehicle's oil-gas suspension structure from one perspective. Figure 2 This is a schematic diagram of the overall structure of the oil-gas suspension structure for a container transfer vehicle according to this utility model from another perspective; Figure 3 This is a schematic diagram of the internal connection of the oil-gas shock absorption component in the oil-gas suspension structure of a container transfer vehicle according to this utility model.

[0017] Explanation of key figure labels: 1. Drive axle; 11. Drive assembly; 12. Tie rod mount; 13. Connecting section; 2. Wheel rim; 3. Oil-gas shock absorber components; 31. Hydraulic cylinder; 311. Sleeve 1; 312. Piston rod 1; 32. High-pressure chamber; 33. Low-pressure chamber; 34. Sleeve 2; 35. Piston; 4. Thrust rod; 5. Auxiliary push rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0019] Reference Figure 1-3This utility model provides a hydropneumatic suspension structure for a container transfer vehicle, which is located at the bottom of the container transfer vehicle. The suspension structure includes a drive axle 1, wheel rims 2, and hydropneumatic shock absorber components 3. Two wheel rims 2 are symmetrically arranged on the left and right sides of the drive axle 1. The drive axle 1 includes a drive assembly 11, tie rod seats 12, and a connecting section 13. The drive assembly 11 has a built-in drive motor and gear transmission mechanism, which serve as the power source and transmission device, respectively, to drive the wheel rims 2. Two prism-shaped tie rod seats 12 are symmetrically arranged on the left and right sides of the drive assembly 11. The connecting section 13 rotatably connects the tie rod seats 12 and the wheel rims 2. The drive assembly 11 passes through the tie rod seats 12 and the connecting section and controls the rotation of the wheel rims 2. Specifically, the gear transmission mechanism meshes with the wheel end of the wheel rim. The gear transmission mechanism is existing technology, and its connection method with the wheel rim is also existing and will not be described in detail here. Two hydropneumatic damping components 3 are symmetrically arranged on one side of the drive axle 1. Each hydropneumatic damping component 3 includes a cylinder 31, a high-pressure chamber 32, and a low-pressure chamber 33. One end of the cylinder 31 is rotatably connected to the drive axle 1, and the other end is rotatably connected to the bottom of the container transfer vehicle. The cylinder 31 includes a sleeve 311 and a piston rod 312. The sleeve 311 is fitted onto the piston rod 312. One end of the piston rod 312 is provided with an oil return channel. The piston rod 312 divides the interior of the sleeve 311 into two cavities, and the space between the two cavities is filled with oil. Under the action of external force, the oil flows between the two cavities through the oil return channel. In the return flow, both the high-pressure chamber 32 and the low-pressure chamber 33 are connected to the hydraulic cylinder 31. Specifically, both the high-pressure chamber 32 and the low-pressure chamber 33 include a second sleeve 34 and a piston 35. The second sleeve 34 is located on one side of the first sleeve 311, and the connection between the two is open, that is, a return oil channel 2 is left between the second sleeve 34 and the first sleeve 311. The piston 35 divides the space inside the second sleeve 34 into two chambers. The chamber connected to the hydraulic cylinder 31 is filled with the same oil as the hydraulic cylinder 31. The other chamber is connected to an external gas inlet device. Nitrogen gas with a pressure higher than atmospheric pressure is injected into the high-pressure chamber 32, and nitrogen gas with a pressure lower than atmospheric pressure is injected into the low-pressure chamber 33. The high-pressure chamber 32 and the low-pressure chamber 33 work together to act on the hydraulic cylinder 31 and buffer the contraction of the hydraulic cylinder 31 or drive the extension of the hydraulic cylinder 31 according to the action requirements of the hydraulic cylinder 31. One end of the hydraulic cylinder 31 is rotatably connected to the rear side of the tie rod seat 12, and the other end of the hydraulic rod is rotatably connected to the bottom of the transfer vehicle.

[0020] Furthermore, to transmit the longitudinal and lateral forces of the transfer vehicle and ensure precise control, the suspension structure also includes a thrust rod 4 and an auxiliary push rod 5. The thrust rod 4 is rotatably mounted on the top of the drive assembly 11. The auxiliary push rod 5 is rotatably connected to the front side of the tie rod seat 12.

[0021] Working principle: When the suspension is set at the bottom of the transfer vehicle, the operation of the high-pressure chamber 32 and the low-pressure chamber 33 is controlled according to the load. When the load is low, the low-pressure chamber 33 operates primarily, and the high-pressure chamber 32 operates secondarily; when the load is high, the high-pressure chamber 32 operates primarily, and the low-pressure chamber 33 operates secondarily. If height adjustment is required, the initial air pressure of the high-pressure and low-pressure chambers can be adjusted.

[0022] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0023] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0024] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A hydropneumatic suspension structure for a container transfer vehicle, located at the bottom of the container transfer vehicle, characterized in that, The device includes a drive axle, wheel rims, and a hydropneumatic damping assembly. Two wheel rims are symmetrically arranged on the left and right sides of the drive axle, and two hydropneumatic damping assemblies are symmetrically arranged on one side of the drive axle. The hydropneumatic damping assembly includes a hydraulic cylinder, a high-pressure chamber, and a low-pressure chamber. One end of the hydraulic cylinder is rotatably connected to the drive axle, and the other end of the hydraulic cylinder is rotatably connected to the bottom of the container transfer vehicle. Both the high-pressure chamber and the low-pressure chamber are connected to the hydraulic cylinder. The high-pressure chamber and the low-pressure chamber work together to buffer the contraction of the hydraulic cylinder or drive the extension of the hydraulic cylinder.

2. The container transfer vehicle hydropneumatic suspension structure according to claim 1, characterized in that, The drive axle includes a drive assembly, tie rod seats, and a connecting section. Two prism-shaped tie rod seats are symmetrically arranged on the left and right sides of the drive assembly. The connecting section rotatably connects the tie rod seats to the wheel rim. The drive assembly passes through the tie rod seats and the connecting section and controls the rotation of the wheel rim. One end of the hydraulic cylinder is rotatably connected to the rear side of the tie rod seats.

3. The container transfer vehicle hydropneumatic suspension structure according to claim 1, characterized in that, The cylinder includes a sleeve and a piston rod. The sleeve is fitted onto the piston rod, and one end of the piston rod is provided with an oil return channel. Both the high-pressure chamber and the low-pressure chamber include a sleeve and a piston. The sleeve is located on one side of the sleeve and the connection between the two is open. The piston is located inside the sleeve and the side of the piston away from the connection between the sleeve and the sleeve is connected to an external gas inlet device.

4. The container transfer vehicle hydropneumatic suspension structure according to claim 2, characterized in that, It also includes a thrust rod, which is rotatably located on top of the drive assembly.

5. The container transfer vehicle hydropneumatic suspension structure according to claim 2, characterized in that, It also includes an auxiliary push rod, which is rotatably connected to the front side of the pull rod seat.

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