A kind of high stress leaf spring for mine dump truck

Abstract

The utility model relates to a high-stress plate spring for a mining dump truck, which belongs to the field of locomotive spring manufacturing. It is characterized in that: including the plate spring body, left hoop arms and right hoop arms are respectively arranged on the left and right sides of the first upper reed, the second upper reed and several lower reeds, and several There are several right reed sockets on the upper part of the right hoop arm, and the left ends of the first upper reed, the second upper reed and each lower reed are respectively inserted into the left reed jacks of the left hoop arm Among them, the right ends of the first upper reed, the second upper reed and each lower reed are respectively inserted into the right reed socket of the right hoop arm; the lower ends of the left hoop arm and the right hoop arm are connected with a stress adjustment device. The invention can maintain the high stress of the leaf spring, is firmly fixed and is not prone to torsion misalignment among the leaf springs; in addition, the invention can flexibly adjust the stress of the leaf spring and has a wider application range.

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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