A rotating assembly that effectively reduces the staggering amount of the pedal valve

Abstract

The invention provides a rotating assembly capable of effectively decreasing stagger amount of a foot operated valve. The rotating assembly comprises a connecting plate, wherein left and right rotating seats are arranged on the connecting plate; the rotating seats are connected with the connecting plate through hinge pins; the bottom ends of the two side surfaces of the rotating seats are concave inwards to form end faces; the two ends of the bottom surfaces of the rotating seats are oblique upwards to form upper oblique surfaces; the bottoms of the end faces and the tops of the upper oblique surfaces intersect with each other to form limiting parts; and grooves are formed in the parts, corresponding to the limiting parts of the two rotating seats, on the connecting plate. According to the rotating assembly, through utilizing a surface processing method, the parts where the rotating seats and the connecting plate are in mutual contact are formed through processing of a machine tool, the processing accuracy is uniform, the dimensional tolerances of horizontal distances and vertical distances from the limiting parts in the rotating seats to the centers of the hinge pins, and the dimensional tolerance of horizontal distances from the upper plane of the connecting plate to the centers of the hinge pins are decreased, and the deflection angle difference of the two rotating seats does not exceed the design requirement; and the device is simple in structure, the stagger amount of the two rotating seats of the foot operated valve is effectively decreased, and the ex factory pass rate of the foot operated valve is increased.

Description

technical field [0001] The invention relates to a rotating assembly that can effectively reduce the stagger amount of a foot valve, and belongs to the technical field of pilot control valve structures. Background technique [0002] The foot valve is mainly used in the pilot hydraulic control system of small hydraulic excavators and other construction machinery, and is an important part of the pilot control system. In the pilot hydraulic control system, the pilot oil supply valve provides the working hydraulic oil of the foot valve. By controlling the foot valve, the pilot control hydraulic oil acts on the corresponding main valve control unit to drive the movement of the main valve control unit spool. The corresponding actions of the actuators meet the operator's action requirements for the actuators. The rotating assembly is one of the important components of the foot valve. [0003] The rotating assembly of the traditional foot valve is composed of figure 1 Shown, it is...

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the technical problem that the two rotating blocks of the existing foot valve are staggered

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