The Research On The Wet Brake In The Axle For The Wheel Loader

Driving axle is engineering machinery chassis components, also is the one of the core of engineering machinery. Driving axle design and manufacturing ability, a directly impact on the engineering machinery advanced and reliability. Domestic engineering machinery driving axle, its technical level stays in the1980s level, and is used mostly dry type brake system. So-called dry brake system, refers to the drive axle of the brake directly exposed to the outside, except maintenance relatively easy outside, in the braking performance, operating comfortably and environmental protection are flawed, and unable to meet increasing demand of the market.Meanwhile, international engineering machinery manufacturers and professional drive axle of suppliers, such as CATERPILLAR, DANA, ZF, CARRARO, etc., are no longer manufacture dry brake axle, have already widely used wet braking axle. Wet brake axle system distributed in axle housing or wheel edges wheel inside, can satisfy the requirements of environmental protection, brake impact small, operation and comfortable, maintenance very convenient also, used this kind of brake system by road condition, the driving axle, weather and environment less effect.As foreign engineering machinery giants have invested in China, as well as Chinese manufacturer’s factory, the traditional internationalized dry brake axle already cannot satisfy the domestic and foreign customer needs. Dry brake axle, because of the technical reason, at present is applied in low-grade machine, and wet brake axle common in high-grade equipment. In engineering machinery field, although Chinese manufacturers of production are large, but due to the bottom of the market competition, backward in technology, small profits. Chinese engineering machinery driving axle backward situation has severely restricted the domestic engineering machinery manufacturers into high-grade market ability, and their international competitiveness. In order to improve the Chinese engineering machinery, the international competition ability of the product must be developed with the international advanced level in the engineering machinery driving axle products.Wet brake axle’s core technology lies on wet brake design technology. In this paper, the iesign method of wet brake, braking seal design improvement and test method, the wheel oader braking thermal analysis and breaking heat emission method is designed and studied, and established the enterprise’s wet brake design and test specification. Based on this research contents of implementation, can be used to enhance the reliability of wet brakes in a certain extent, to enhance the core part of engineering machinery homebred the competitiveness of the-ealistic significance.