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Balanced hydro-pneumatic suspension with built-in air chamber

A technology of oil and gas suspension and air chamber, applied in the field of hydraulic machinery, can solve the problems of multi-car body layout space, increase production and manufacturing costs, needs, etc., and achieve the effects of reducing manufacturing costs, simplifying structural solutions, and solving excessive losses along the process.

Pending Publication Date: 2022-04-19
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent 202020210112.0 accumulator vertical balance oil-air suspension, 202020210113.5 accumulator horizontal balance oil-air suspension adopts external high and low pressure piston accumulators between the oil and gas springs of the middle and rear axles, and realizes them through the scheme of sequential connection of pipelines To balance the suspension function, the solution of using external high and low pressure piston accumulators requires more car body layout space, and also increases the manufacturing cost

Method used

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  • Balanced hydro-pneumatic suspension with built-in air chamber
  • Balanced hydro-pneumatic suspension with built-in air chamber
  • Balanced hydro-pneumatic suspension with built-in air chamber

Examples

Experimental program
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Effect test

Embodiment 1

[0049] This embodiment provides a balanced oil-air suspension with a built-in air chamber, see the attached figure 1 , including: two oil-gas springs, a front spring joint 11, a rear spring joint 13 and a balance pipeline 12;

[0050] The two oil-gas springs are respectively a front oil-gas spring 81 and a rear oil-gas spring 82; the oil-gas springs are all hollow structures, and their inner chambers are the main oil chamber 14, and piston rods 2 are installed in the inner chambers of the oil-gas springs. , the piston rod 2 is a hollow structure, the piston rod 2 is provided with a floating piston 4, so that the inner cavity of the piston rod 2 forms a built-in air chamber 8;

[0051] The front oil-gas spring 81 is connected to one end of the balance pipeline 12 through the front spring joint 11, and the rear oil-gas spring 82 is connected to the other end of the balance pipeline 12 through the rear spring joint 13; the main oil chamber 14 of the front oil-gas spring 81 passes...

Embodiment 2

[0066] In this embodiment, on the basis of Embodiment 1, the main piston 5 is replaced with a sealed piston 61; Figure 7-9 , the sealed piston 61 is a cylindrical structure with one end open and one end closed; more than two axial through holes B are processed on the closed end of the sealed piston 61, and the axial through holes B are throttle holes 51; two third guide strips 53, a third oil seal 54 and a fourth oil seal 55 are provided on the outer circumference of the sealed piston 61; the third oil seal 54 and the fourth oil seal 55 are located in the two third Between the guide belts 53;

[0067] The closed end of the piston with seal 61 is fixed on the upper end of the piston rod 2 by the piston bolt 9 arranged in the circumferential direction, and the upper end opening is closed; the open end of the piston with seal 61 is located at the other end of the annular gap, with a seal The third guide band 53 on the piston 61 is in contact with the inner circumferential surfa...

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Abstract

The invention discloses a balance hydro-pneumatic suspension with a built-in air chamber. The balance hydro-pneumatic suspension comprises two hydro-pneumatic springs and a balance pipeline. The two hydro-pneumatic springs are respectively a front hydro-pneumatic spring and a rear hydro-pneumatic spring; the hydro-pneumatic springs are all of hollow structures, inner cavities of the hydro-pneumatic springs are main oil cavities, piston rods are installed in the inner cavities of the hydro-pneumatic springs, the piston rods are of hollow structures, and floating pistons are arranged in the piston rods, so that built-in air chambers are formed in the inner cavities of the piston rods; a main oil cavity of the front hydro-pneumatic spring is connected with one end of the balance pipeline, and a main oil cavity of the rear hydro-pneumatic spring is connected with the other end of the balance pipeline. A main oil cavity of the front hydro-pneumatic spring is communicated with a main oil cavity of the rear hydro-pneumatic spring through a balance pipeline; the high-pressure air chamber is highly integrated in the inner cavity of the piston rod of the hydro-pneumatic spring, an original piston type energy accumulator structure is omitted, the workload of general assembly joint debugging is greatly simplified, the product is more integrated and modularized, disassembly, assembly and maintenance are convenient, and the situation that the arrangement space of a vehicle body is limited can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of hydraulic machinery, and in particular relates to a balanced oil-air suspension with a built-in air chamber. Background technique [0002] In the field of mining machinery, especially for 6X4 vehicle chassis, the middle axle and the rear axle are usually very close to each other, and they need to share the role of the upper load. The middle and rear axles must be designed as a balanced suspension structure. The traditional leaf spring suspension is connected to the frame through the hinge point in the middle to realize the balanced suspension function. After the oil-pneumatic suspension scheme is adopted, the middle and rear axles on the same side are oiled. The balance suspension function can also be easily realized through the connection of the cavity through the pipeline. Through the actual vehicle test, the pressure of the middle and rear axle cylinders after the connection is similar, and only slight...

Claims

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Application Information

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IPC IPC(8): F16F9/06F16F9/32F16F9/34F16F9/36F16F9/43
CPCF16F9/062F16F9/3207F16F9/3221F16F9/43F16F9/366F16F9/3214F16F9/3405F16F9/437F16F9/369
Inventor 陈轶杰张亚峰韩小玲张旭徐梦岩徐龙万义强
Owner CHINA NORTH VEHICLE RES INST
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