Foreign scraper braking systems generally use glossy tires

Underground scrapers have been using the German Deutz (Deut:) company's ELg12/9134/13w series of air-cooled vortex combustion chamber diesel engines, mines with gas hazards use MWM or Caterpillar C (ate plus nar) company's water-cooled diesel engines. mid-1980s, the United States Detroit (De plus) it diesel engine company introduced the diesel engine electronic control system ( DDE)c, accept from the driver and sensor transmission of various electronic signals (diesel engine pressure, temperature, speed, etc.), precise control of fuel injection and injection time, indicating the location of the fault, fault diagnosis, so that the engine fuel consumption reduced by 3% to 5%, and shorten the acceleration time, improve cold start performance, improve exhaust emissions, so that the engine life is greatly extended. This diesel engine in vehicles and ships are widely used. O9 years and into the underground trackless equipment market, the development of electronic control (DDECm) 40, 50, O6 series water-cooled diesel engine began to be used by large scrapers. Such as Tom Locke 007 with EetDritO5 series diesel engine, the use of EGs can make the transmission using a single lever control, with a handle to control the vehicle forward, reverse or neutral position, as well as select the gear shift position of each gear.

The electronically controlled shift regulator (ECM) is called the "electronically controlled shift buffer" by Clark. In order to reduce the shock and smooth shifting, modern powershift transmissions are generally equipped with shift regulators, usually one for each clutch. EcM can ensure that the shifting of each gear can reach the best state, thus changing the situation that the original regulator can only provide one adjustment curve (the relationship between the clutch pressure size and the bonding time curve), and achieving the purpose of quick and smooth shifting.

The drive axle adopts anti-slip differential, fully enclosed wet multi-disc brakes and glossy cut-resistant tires. most foreign shovelers use Clark's planetary rigid drive axle, some use Rockwell (Rokcw to) company or other companies' drive axle. since the 80s, the shovel drive axle widely uses self-locking anti-slip differential (NO a SPIN). This kind of differential can automatically distribute transmission torque with the change of road conditions, so as to improve the machine's passability, prevent wheel slippage, and reduce tire wear. Generally, the front axle of small and medium-sized shovel adopts the anti-skid differential, and the rear axle adopts the standard differential; the front axle of large and medium-sized shovel adopts the standard differential, and the rear axle adopts the anti-skid differential. In recent years, there is a "limited slip differential", this differential in addition to the advantages of the anti-skid differential, but also to eliminate the vibration load when the self-locking anti-skid differential joint, can directly add the torque of the slip to the side of the wheel with high traction, so that it gets a better traction effect.

The difference between it and the anti-slip differential is: when a wheel slips, the other wheel can only use most of the entire axle attachment while the other wheel of the anti-slip differential can use 100% of the entire axle attachment, especially in the shoveling operation when the front axle load is the most large, such a large load if the drive components of a single wheel may be very difficult to bear, or even can not bear. Therefore, in recent years, some large and medium-sized shovel machine front axle with "limited slip differential", rear axle with anti-slip differential. Foreign shovel machine work brake from 8o years on the use of fully enclosed wet multi-disc brake, the 90s since the common application. This brake is fully enclosed, to prevent mud, sand, dirt immersion, using oil-cooled and multi-disc brake structure, disc clearance without adjustment and allow slippage transfer torque, especially for heavy vehicles down long slopes brake conditions. It has stable braking, good performance, simplified maintenance and long service life.

This brake is divided into two types: hydraulic brake, non-pressure release type (LcB) hydraulic brake and spring brake, hydraulic release type (SAHR) spring brake. There is a new type of hydraulic brake called planetary liquid-cooled brake (PLCB), which is installed in the Qian wheelside reducer and does not require disassembly of the tires, wheels and planetary wheel Yi during maintenance. Spring brake is a new type of safety brake, if the brake oil pipe rupture or oil pressure drops to a certain value immediately brake, and parking, emergency and work brake three in one, only a single circuit brake, thus greatly simplifying the braking system foreign shovel machine generally use glossy or block deep pattern mining cutting resistance engineering tires, this tire load-bearing capacity, grounding ratio pressure is small, wear-resistant, strong puncture resistance, Long service life.