A kind of torsion cylinder assembly in the middle part of mining dump truck

Abstract

The invention provides a middle torsion barrel assembly of a mining dump truck. The middle torsion barrel assembly of the mining dump truck comprises a lifting cylinder support, a torsion barrel and a pushing force frame, wherein the lifting cylinder support comprises a left support and a right support which are respectively provided with a torsion barrel shaft hole, the torsion barrel shaft holes are arranged in opposite, the two ends of the torsion barrel are arranged in the torsion barrel shaft holes of the left support and the right support respectively in a sleeved mode, and the pushing force frame is fixed to the torsion barrel. The middle torsion barrel assembly of the mining dump truck is high in rigidity and strength, good in structural stability and reliability and long in service life.

Description

technical field [0001] The invention relates to mechanical technology, in particular to a middle torque cylinder assembly of a mining dump truck. Background technique [0002] Mining dump truck is a large off-highway transport vehicle. It has the characteristics of heavy weight, harsh working environment and long continuous working time. It has strict requirements on the strength and reliability of the concentrated stress-bearing parts of the whole vehicle. The frame of the mining dump truck is the core component of the entire mining dump truck, and the load and power of the entire vehicle are completely transmitted from the frame to each component of the entire vehicle. The middle torque tube assembly of the frame (hereinafter referred to as the torque tube assembly) plays an important role in supporting the lifting of the cargo box and connecting the rear axle to transmit the power of the vehicle. It is one of the most stressed parts of the mining dump truck. If the assem...

AI Technical Summary

Problems solved by technology

Since the thrust frame 2 is a component that connects the rear axle and transmits the forward and reverse power of the whole vehicle, and the through hole in the middle cooperates with the hinge shaft to be hinged with the rear axle housing, the split welding structure can not guarantee the rigidity of its structure, and its left 1. The coaxiality of the hinged holes on the right ear seat is also difficult to meet the design requirements; moreover, the thrust frame is prone to stress concentration at the welding seam under the action of dynamic load. From the perspective of manufacturing technology, it is not easy to achieve a smooth transition at these joints to reduce stress concentration

[0005] In addition, in the middle torsion tube assembly of the prior art, the torsion tube 1 penetrates through the left and right longitudinal beams 4 and is directly welded thereon, although there are reinforcing cladding plates on the inner and outer sides of the left and right longitudinal beams 4 , but the root of the connection between the longitudinal beam 4 and the torsion tube 1 is the stress concentration part of the entire frame, and only relying on the annular weld to bear the torque and bending moment generated by the deformation of the thrust frame 2 and the entire frame, it is easy to reduce the torque tube in the middle reliability, thereby reducing the overall life of the vehicle frame; in addition, because the lift cylinder support 3 supports the cargo box through the lift cylinder, a huge impact load will be generated during the lifting and falling of the lift cylinder, and the prior art will lift the The cylinder support 3 is simply welded on the left and right longitudinal beams 4 to support the lift cylinder shaft of the cantilever structure, which will easily cause the deformation of the lift cylinder support 3 and cause the weld 5 to crack

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