The 921D excavator developed by the mountain reconstruction machine adopts the Weichai WP7 engine, the mountain reconstruction machine independent electronic control system, and the Shantui chassis. It is the representative of the Group's strategic synergy.
The Weichai WP7 engine used in this model meets the national three emission standards, with lower fuel consumption, energy saving and environmental protection, and convenient maintenance. Three-stage fuel filtration improves the service life of the engine. The vibration is small, the noise is low, and the working condition is stronger.
Detailed introduction
1. Power system: Weichai environmental protection low-emission EFI engine WP7, six-cylinder in-line, water-cooled, rated power 116Kw, rated speed 2000r/min, maximum output torque 630N?m, in line with the domestic third-stage emission standards, energy saving and environmental protection, Low noise, strong power and strong adaptability to the plateau.
2. Hydraulic system: It adopts load sensitive system, electromagnetic proportional control and hydraulic constant power control to minimize flow loss and system heating.
3. Chassis parts: the sprocket wheel, the driving wheel, the guiding wheel, the crawler belt and the supporting roller are all driven by the mountain pusher.
4. Structural parts: The boom and the arm are all made of box structure; the bucket bucket capacity is 0.9 cubic meters; the reinforced rotary platform; the track frame adopts X-shaped structure and forged slewing bearing.
5.Electrical system: It adopts self-developed electromechanical integrated intelligent electronic control system, embedded GPS module and GPRS module to enhance detachment, ensure machine safety and reduce cost; adopt new throttle controller for throttle control, and control quickly. Precise; the system reserves signal acquisition and signal input ports, has strong port expansion capability; increases the power control point, and sets the AUTO mode to reduce the difficulty of machine operation; increases the automatic control of the breaker mode, this refined operation mode makes The engine is always at the optimum working point (energy saving point).
6. Covering parts: streamlined design, coordination of color and pattern, overall weight and large opening upper cover, left and right side doors, cab, structural parts, etc., overall coordination; improve the interior decoration of the cab interior, Equipped with automatic air conditioning.
7. Comfort: Optimized engine suspension position, improved vibration isolation rate; silicone oil spring shock absorber is used in the cab, low rigidity, high vibration and shock absorption performance; driving interior decoration and color matching according to ergonomics; The master pump is precisely matched to the main valve to improve driver comfort.
