Double-top secondary-beam-free frame in dumper

Abstract

A double-top secondary-beam-free frame in a dumper comprises a frame and oil cylinder supporting bases; a first oil cylinder beam and a second oil cylinder beam are arranged in the frame, the two ends of the first oil cylinder beam and the two ends of the second oil cylinder beam are connected with the upper wing surface and the lower wing surface of a frame longitudinal beam through frame liner plates respectively, supporting grooves for supporting the oil cylinder supporting bases are formed in a web of the first oil cylinder beam and a web of the second oil cylinder beam, and the two ends of the supporting grooves extend on the webs of the oil cylinder beams into cavities of the frame liner plates; the two ends of the oil cylinder supporting bases are fixed to the supporting groove in the first oil cylinder beam and the supporting groove in the second oil cylinder beam respectively, the oil cylinder supporting base close to the frame longitudinal beam is located in the cavity of the corresponding frame liner plate, and the highest point of each oil cylinder supporting base is located on the upper wing surface of the corresponding frame liner plate; a wide tail beam is arranged at the tail end of the frame, and the upper wing surface of the wide tail beam is flush with the upper wing surface of the frame longitudinal beam; the oil cylinder supporting bases can be installed on the lower portion of a frame wing surface, a self-discharging lifting oil cylinder can be installed with the same frame width, and the space between the oil cylinder and a transmission shaft is large.

Description

technical field [0001] The invention relates to the technical field of automobile frames, in particular to a double-roof non-subbeam frame in a dump truck. Background technique [0002] Restricted by the rear axle structure, wheelbase, tires and outer width of regulations, the width of the middle and rear parts of the frame is generally 800mm and 860mm, and the traditional frame structure cannot accommodate the middle double-top lifting cylinder with a bore diameter of Φ140 and above, resulting in a dump container exceeding When the height is 5 meters, the front lifting mechanism has to be used, but the front lifting mechanism has problems such as high price and difficulty in structural layout without sub-beams. [0003] like figure 1 As shown, the upper wing surfaces of the cylinder beams 5 and 6 are the installation surfaces of the cylinder support 1, and the upper and lower wing surfaces of the cylinder beam are connected with the frame liner 7 through rivets, so the cyl...

AI Technical Summary

Problems solved by technology

[0002] Restricted by the rear axle structure, wheelbase, tires and outer width of regulations, the width of the middle and rear parts of the frame is generally 800mm and 860mm, and the traditional frame structure cannot accommodate the middle double-top lifting cylinder with a bore diameter of Φ140 and above, resulting in a dump container exceeding When the height is 5 meters, the front lifting mechanism has to be used, but the front lifting mechanism has problems such as high price and difficulty in structural layout without sub-beams

[0003] like figure 1 As shown, the upper wing surfaces of the cylinder beams 5 and 6 are the installation surfaces of the cylinder support 1, and the upper and lower wing surfaces of the cylinder beam are connected with the frame liner 7 through rivets, so the cylinder support 1 cannot be fixed on the frame liner. In the concave cavity of the plate, the lifting cylinder with a large bore diameter interferes with the transmission shaft, so that the cylinder with a bore diameter of Φ140 or more cannot be used; and the problem of the high center of gravity of the cylinder is solved by reducing the height of the cylinder beam, which leads to the decrease in the strength of the cylinder beam and cannot be lifted. To the role of the frame beam

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