Construction machinery brake system vacuum booster with master cylinder assembly

Abstract

The invention discloses vacuum boosters with master cylinder assemblies for an engineering machinery brake system. The brake system comprises two vacuum boosters with master cylinder assemblies, and each master cylinder is provided with an oil inlet joint (4) and an oil outlet joint (5); a piston assembly (12) is arranged in each master cylinder, a vacuum booster (14) is connected with a pedal mechanism through a connecting rod (15); the oil inlet joints (4) are connected with an oil pipe respectively, the oil outlet joints (5) are connected with left and right wheel brakes of a brake axle respectively, and two master cylinders are provided with balance oil ports which are communicated through balance oil port joints (7) and balance connecting oil ways. According to the vacuum boosters with master cylinder assemblies, the problem of imbalance pressure of oil outlets is solved through the arrangement of the balance oil ports, brake synchronization of left and right wheels can be achieved, the brake is stable, psychological burden of drivers is relived, and operations are free; and practicability of products and the operability of drivers are improved, so that the drivers can operate freely, and the brake is stable.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and relates to braking technology in engineering machinery. More specifically, the invention relates to a vacuum booster belt master cylinder assembly of an engineering machinery braking system. Background technique [0002] In the field of construction machinery, there is a kind of construction machinery commonly known as "two busy". [0003] The so-called "two busy" construction machinery refers to: the function of excavating in the front, and the function of bulldozing or shoveling in the back. This type of engineering vehicle is equipped with two vacuum boosters with a master cylinder assembly, which respectively control the left and right wheels of the brake bridge. When the driver steps on the left pedal, the left wheel can be braked; Wheel braking, the two pedals are stepped on at the same time to achieve the braking of the left and right wheels. Due to the difference betwe...

AI Technical Summary

Problems solved by technology

[0006] Since this product is installed on the "both busy" construction machinery, the driver can step on the pedal mechanism at the same time to realize the synchronization of the left and right wheel brakes, and the whole vehicle may swing from side to side, causing psychological burden to the driver. In harsh environments and steep hills prone to accidents

Images