Changlin PY190C-3 Road Grader
Product Introduction
Changlin PY190C-3 road grader is based on PY190, relying on the company’s technology and manufacturing advantages in construction machinery, in response to the country’s policy of developing the west, recently developed a plateau type grader suitable for the special geographical environment and climatic conditions of the western plateau . The machine adopts hydraulic mechanical transmission, hydraulic power shifting, rear axle drive, full hydraulic articulated steering, and liquid roof hydraulic power-assisted braking. It is suitable for large-scale engineering projects to level the ground and can be widely used in railways, highways, municipal , mining, water conservancy and other national key construction.
Product Features
1. Power system
The D6114 plateau power recovery supercharged engine is adopted, which is a product developed by Shangchai on the basis of introducing foreign technology. Through supercharged air supply, the air density of the cylinder is increased to increase the excess air coefficient, so as to achieve full combustion of fuel in the cylinder and restore the average Effective pressure and power purposes. The fuel injection pump is equipped with LD or ADA plateau air pressure compensator to adjust the fuel injection quantity and control the exhaust temperature. In order to ensure the intake air volume of the diesel engine, the intake air volume of the turbocharger changes with the altitude by selecting an imported turbocharger or an improved turbocharger specially for plateaus. In high-altitude areas, the power of the diesel engine drops by less than 5%. At the same time, when the speed of the diesel engine is greater than 1500r/min, the smoke level of the diesel engine is 3.0, which better controls the problem of black smoke from the exhaust. In addition, the throttle control is equipped with hand throttle control and electric flameout device.
2. Transmission system
It is composed of a transmission, a rear axle and a balance box. The single-handle electro-hydraulic control realizes gear shifting and direction change. The speed of 6 forward gears and 3 reverse gears can meet the requirements of various operations. The balance box adopts double-row super-reinforced roller chains. Fully guarantee the transmission strength. The assembled structure makes the system easy to assemble and disassemble, which improves the fault handling ability in harsh environments.
3. The service brake adopts the form of “liquid top liquid”. The American mico brake booster and the rear four-wheel wheel-side shoe brake can prevent the water in the compressed air from blocking the pipeline at low temperature and cause brake failure, and fully guarantee the brake. performance.
4. Hydraulic and steering system
The full hydraulic steering system has compact components and is easy to operate; the working hydraulic system is supplied by a single pump, which is evenly distributed to the left and right multi-way valves through the diverter valve, and at the same time, the ring gear rotary oil circuit merges the left and right oil flows. Speed, and reduce loss as much as possible; hydraulic locks are designed on oil circuits such as blade lifting and articulation, so as to realize strict control of action accuracy. The hydraulic oil suction part applies the “siphon” principle, which can ensure sufficient oil supply to the oil pump even if the altitude is high and the air pressure is low, so that the various actions and performance indicators are normal, and the system noise and hydraulic component damage caused by insufficient oil suction of the oil pump are avoided. The high-pressure rubber hose adopts a flared structure, and a metal seal is realized between the joint and the joint, which avoids the oil leakage problem caused by the aging of ordinary rubber seals.
5. Work device
The working device is completely manufactured according to Komatsu technology, which can realize 90 inclination of the blade and 360 rotation of the ring gear. The depth of the shovel is large, and the working range to reach the left and right road shoulders is wide; the position of the working device on the whole machine is designed so that the height of the blade to the ground The changes have good adaptability.
6. Frame
The main beams of the front and rear frame and the part of the working device are widely used in the box-shaped structural section, so that the strength of the main stress-bearing components is fully guaranteed.
7. Cab
The design of the cab with narrow columns and large glass provides a good front and rear view, enabling the driver to easily observe any movement of the working device indoors: the angle-adjustable console and the vibration-absorbing seat that can lift and slide , making the driver’s operation more comfortable.
