Position:Engineering Information

Systems analysis of hydraulic pressure of 18000 crawler crane

From;    Author:Stand originally

Summary:  of leave uncovered of こ of housing Ang  holding sb in respectful awe pours Min of toot of Bi of aurelian border of Qian of Yun of A Chinese-style unlined garment of racoon dog of blown away by wind of Zhui writing take along sth to sb is to look Piao is tasted wring? to controlled a system to undertake improvement to traditional onefold hydraulic pressure, the article is with system of hydraulic pressure of 600 tons of crane exemple, introduced the pump control of 600 tons of crane in detail, a powerful person and motor are controlled. Thematic word: EDC, pump, motor
18000 crawler crane of my company (600 tons of crane) the control means that uses hydraulic pressure and band of electronic technology photograph. Fluid drive system is the course that an energy changes actually, hydraulic pump changes mechanical energy into oily fluid hydraulic pressure can, and hydraulic pressure crock and hydraulic pressure motor can change the hydraulic pressure of oily fluid into mechanical energy -- the hydraulic pressure jar that makes linear motion or the hydraulic pressure motor that make circumgyrate motion. The control regulating unit in hydraulic pressure system -- the different combination of hydraulic pressure a powerful person formed different hydraulic pressure loop, it is with 600 tons of crane below exemple, introduce the hydraulic pressure principle of this crane.

Hydraulic pump is linked together with engine directly, the pressure of the system of hydraulic pressure of mechanical energy translate into that exports engine can. In 600 tons of crane, engine parts through positive drive box 13 pump have the job below drive. It is respectively advocate luffing pump A (4# reel) , circumgyrate pump (optional) , booster pump, assist pump, advocate luffing pump B (4# reel) , advocate remove litre of pump (1# and 3# reel) , circumgyrate pump, wrong track pump, advocate remove litre of pump (2# reel) , deputy luffing pump (6# reel) , right pedrail pump, advocate remove litre of pump (1# reel) , advocate remove litre of pump (2# and 5# reel) . These 13 pump have the job independently, each pump forms loop of a hydraulic pressure. The hydraulic pressure loop of 600 tons of crane has type system and the system that shut type two kinds, so-called system opening type points to hydraulic pump namely from gasoline tank oil absorption, transmit high-pressured oil to actuator acting through vitta next, the hydraulic pressure oil after acting returns gasoline tank from motor mouth, enter the oil absorption mouth of pump through filter next, ordinal loop. And in shutting type system, the hydraulic pressure oil after acting does not return gasoline tank to enter the oil absorption mouth of pump to be used circularly directly. Of 600 tons of crane advocate loop includes hoisting system, luffing system, circumgyrate system and pedrail walk the system is the adoption system that shut type, and what auxiliary pump and booster pump use is system opening type. The system that shut type and photograph of system opening type are compared, the hydraulic pressure oil of the system that shut type enters the oil absorption mouth of pump directly, it is good to suck a gender of reason pump oneself, introduce air and impurity not easily, drive of hydraulic pressure system is smooth, but go against medicinal powder hot, and system opening type because from gasoline tank oil absorption, gasoline tank is had medicinal powder hot function, coming loose so it is good that hot field opens type system to want to compare the system that shut type.
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