High-stress plate spring for mining dump truck

Abstract

The invention discloses a high-stress plate spring for a mining dump truck, and belongs to the field of manufacturing of automobile springs. The high-stress plate spring is characterized in that the high-stress plate spring comprises a plate spring body, a left hoop arm and a right hoop arm are arranged on the left side and right side of a first upper plate spring piece, a second upper plate spring piece and a plurality of lower plate spring pieces correspondingly, a plurality of left plate spring piece inserting holes are formed in the upper portion of the left hoop arm, a plurality of rightplate spring piece inserting holes are formed in the upper portion of the right hoop arm, the left ends of the first upper plate spring piece, the second upper plate spring piece and each lower platespring piece are inserted into the left plate spring piece inserting holes of the left hoop arm correspondingly, and the right ends of the first upper plate spring piece, the second upper plate springpiece and each lower plate spring piece are inserted into the right plate spring piece inserting holes of the right hoop arm correspondingly, and the lower ends of the left hoop arm and the right hoop arm are connected with stress adjusting devices. According to the high-stress plate spring for the mining dump truck, the high stress of the plate spring can be maintained, fixation is firm, and torsional dislocation among the plate spring pieces is not easy to occur; in addition, the stress of the plate spring can be flexibly adjusted, and the application range is wider.

Description

technical field [0001] The invention belongs to the field of automobile spring manufacturing, and in particular relates to a high-stress leaf spring for a mining dump truck. Background technique [0002] Dump trucks refer to vehicles that unload goods by themselves through hydraulic or mechanical lifting, also known as dump trucks, which are freight vehicles with extremely high loads. This type of vehicle has particularly high requirements on the suspension system. After being used for a period of time, the leaf springs used in the suspension system are frequently deformed by external impacts, resulting in the full release of internal stress, improved plasticity and reduced fatigue resistance. The shock absorption ability is poor and it will be deformed or broken in severe cases. How to timely and scientifically adjust the stress of the leaf spring to meet the shock absorption requirements of heavy-duty vehicles is a technical problem urgently needed to be solved by those s...

AI Technical Summary

Problems solved by technology

[0003] When the dump truck is loading or unloading, the body will inevitably turn over, and when turning at a high speed under heavy load, the reeds of the leaf spring will be subjected to side torsion, which will cause misalignment between the reeds, which will affect the safety of use.

On July 30, 2014, our company applied for an invention patent with the patent number "201420423144.3" and the patent name "A High-stress, High-Life Variable Cross-section Leaf Spring", such as figure 1 and 2 As shown, the device can use the structure of the pressure bag and the pressure groove to prevent the upper and lower springs from being misaligned under normal force conditions. There are still deficiencies in terms of stability

[0004] In addition, in the prior art, the "O"-shaped ear of the upper reed is used for fixing the suspension, while the "C"-shaped ear of the lower reed is only wrapped around the "O"-shaped ear to fix the lower reed. However, in actual use, when the "C"-shaped ear wraps the "O"-shaped ear too loosely, it will come out, and if it is wrapped too tightly, it will generate a large friction force, which will affect the force of the lower reed. The bending deformation in the state reduces the overall elastic adjustment force of the leaf spring

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