Elastic device for front suspension for heavy articulated dump truck

Abstract

The invention discloses an elastic device for a front suspension for a heavy articulated dump truck. The elastic device is arranged between a vehicle frame and an axle and mainly comprises two groups of double helical spring assemblies and a vibration reduction mechanism; the two groups of double helical spring assemblies are arranged on two sides of the axle; each group of double helical spring assembly mainly comprises an outer helical spring sleeve, an inner helical spring sleeve, a support inner sleeve, and a support outer sleeve; the turning direction of the outer helical spring sleeve is reverse to that of the inner helical spring sleeve; the outer helical spring sleeve is arranged outside the inner helical spring sleeve, and the outer helical spring sleeve and the inner helical spring sleeve are arranged between the support inner sleeve and the support outer sleeve; and the support inner sleeve and the support outer sleeve at two ends of each double helical spring are connected with the vehicle frame and the axle respectively. The device has excellent elastic performance and vibration reduction performance, guarantees the running stability of the vehicle, and has the advantages of simple structure, convenience in manufacturing, and low production cost and using and maintenance cost.

Description

[0001] technical field [0002] The invention relates to the technical field of a front suspension of a heavy-duty articulated dump truck, in particular to an elastic device for the front suspension of a heavy-duty articulated dump truck. Background technique [0003] At present, rubber springs and oil-pneumatic springs are mostly used as elastic mechanisms for the front cantilever frame of domestic heavy-duty dump trucks. Although their nonlinear characteristics are suitable for the characteristics of large changes in axle load when the vehicle is empty or fully loaded, both of them have some shortcomings and deficiencies. Rotating around different centers, the rubber springs also rotate around different centers, and there will inevitably be different degrees of motion interference, especially when the design of the guiding mechanism is unreasonable, the installation error is large, and the wear is severe, the interference will be more serious, which often leads to The def...

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Problems solved by technology

Although their nonlinear characteristics are suitable for the characteristics of large changes in axle load when the vehicle is empty or fully loaded, both of them have some shortcomings and deficiencies. Rotating around different centers, the rubber springs also rotate around different centers, and there will inevitably be different degrees of motion interference, especially when the design of the guiding mechanism is unreasonable, the installation error is large, and the wear is severe, the interference will be more serious, which often leads to The deformation and cracking of the rubber spring greatly shortens its service life. During the actual use of the vehicle, new rubber springs need to be replaced continuously, which increases the cost of use. For oil and gas springs, it is difficult to manufacture, high in production cost, and requires special Advanced maintenance equipment, troublesome maintenance, at the same time, there are defects such as hydraulic oil leakage caused by the offset of the cylinder axis and poor sealing during the work process, and the inner surface of the cylinder is easily scratched.

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