A kind of crusher's rollers gap adjusts system
Technical field
The present invention relates to a kind of crusher's rollers gap and adjust system, accurately adjust specifically for the roll gap gap between double; two rollers or four-roller crusher action roller and fixing roller.
Background technology
The work of discharging-material size and disintegrating machine normal reliable in order to ensure disintegrating machine, is respectively provided with roll gap adjustment device separate, that work respectively and overload yielding device on disintegrating machine.Roll gap adjustment regulates device, and its effect is to regulate fixing gap between breaker roll and action roller, meets the dimensional requirement of disintegrating machine discharging-material size.Disintegrating machine overload yielding device, its effect is when overload occurs in disintegrating machine so that action roller retreats, and reduces disintegrating machine load, it is achieved the overload protection of disintegrating machine.
Generally adopt manually at present or screw mechanism is by being adjusted the position of disintegrating machine action roller, it is achieved the adjustment in roll gap gap.After roll gap gap adjustment completes, utilize location buting iron that action roller is realized location.This kind of roll gap gap adjustment, labor strength is big, roll gap clearance control inaccuracy, system job insecurity, is especially unsuitable for the workplace that disintegrating machine discharging-material size often changes;Existing overload yielding device is the pressure of pressure transducer detection hydraulic cylinder, if pressure is excessive, adjustable change valve carries out forcing to make a concession.First such adjustment has retardance, is not automatic yielding, therefore can not make a concession in the very first time, secondly so there is a possibility that action roller is made a concession excessively, causes excesssive gap.This kind of overload yielding device is not suitable for disintegrating machine overload protection.
Summary of the invention
For above-mentioned prior art Problems existing, the present invention provides a kind of crusher's rollers gap to adjust system, including guide rail, action roller, Programmable Logic Controller, input equipment and two groups of adjustable bearing bases, buffering hydraulic cylinder, displacement transducer, linear electric motors, accumulator, proportional pressure control valve, check valve, overflow valve, pressure transducers in the setting of action roller lateral symmetry;
Being placed with bearing in adjustable bearing base, action roller is by projecting shaft through bearing, and adjustable bearing base and linear electric motors can be slidably mounted on guide rail, and linear electric motors are connected with adjustable bearing base by connecting rod and nut;Buffering hydraulic cylinder is fixed on crusher frame, and the extension bar of buffering hydraulic cylinder is connected to adjustable bearing base, and buffering hydraulic cylinder and linear electric motors are arranged in parallel;
Displacement transducer it is connected between linear electric motors with adjustable bearing base;Pressure transducer is electrically connected to buffering hydraulic cylinder and is arranged in buffering hydraulic cylinder;Proportional pressure control valve, overflow valve and check valve are parallel between buffering hydraulic cylinder and accumulator;Programmable Logic Controller is electrically connected to displacement transducer, pressure transducer and input equipment.
Further, described linear electric motors are also associated with linear electric motors buffer unit.
Further, described input equipment is PC or touch screen.
Further, described linear electric motors are flat board linear electric motors.
Further, described Programmable Logic Controller is also associated with accident warning device.
The present invention can realize breaking off the accurately quickly adjustment of material granularity, again the synchronization dead load that can play when disintegrating machine transships and make a concession protective effect; crusher's rollers gap and two primary operating parameter of breaker roll load are provided for central controlled monitoring system simultaneously in real time; Automated condtrol for disintegrating machine lays the foundation; maintenance cost is low, and actual application value is high.
Accompanying drawing explanation
Fig. 1 is connection diagram of the present invention,
Fig. 2 is top view of the present invention;
Fig. 3 is action roller gap preset schematic diagram;
Fig. 4 is the dash-control schematic diagram of the present invention;
Fig. 5 is system signal transfer principle figure.
In figure: 1, guide rail, 2, adjustable bearing base, 3, buffering hydraulic cylinder, 4, displacement transducer, 5, linear electric motors, 6, accumulator, 7, proportional pressure control valve, 8, check valve, 9, overflow valve, 10, pressure transducer, 11, linear electric motors buffer unit, 12, action roller.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2: the present invention includes guide rail 1 and action roller 12, Programmable Logic Controller, input equipment and the two groups of adjustable bearing bases 2 arranged in action roller 12 lateral symmetry, buffering hydraulic cylinder 3, displacement transducer 4, linear electric motors 5, accumulator 6, proportional pressure control valve 7, check valve 8, overflow valve 9, pressure transducer 10 are also included;
Being placed with bearing in adjustable bearing base 2, action roller 12 is by projecting shaft through bearing, and described adjustable bearing base 2 and linear electric motors 5 can be slidably mounted on guide rail 1, and linear electric motors 5 are connected with adjustable bearing base 2 by connecting rod and nut;Buffering hydraulic cylinder 3 is fixed on crusher frame, and the extension bar of buffering hydraulic cylinder 3 is connected to adjustable bearing base 2, and buffering hydraulic cylinder 3 and linear electric motors 5 are arranged in parallel;
Displacement transducer 4 it is connected between linear electric motors 5 with adjustable bearing base 2;Pressure transducer 10 is electrically connected to buffering hydraulic cylinder 3 and is arranged in buffering hydraulic cylinder 3;Proportional pressure control valve 7, overflow valve 9 and check valve 8 are parallel between buffering hydraulic cylinder 2 and accumulator 7;Programmable Logic Controller is electrically connected to displacement transducer 4, pressure transducer 10 and input equipment.
In order to linear electric motors 5 are played a protective role, it is also associated with linear electric motors buffer unit 11 at linear electric motors 5.
Input equipment is PC or touch screen, it is possible to is conveniently carried out operation and controls Programmable Logic Controller.
Flat board linear electric motors selected by linear electric motors 5, are more applicable for the installation of native system.
Described Programmable Logic Controller is also associated with accident warning device, when disintegrating machine breaks down, it is possible to remind staff in time, it is to avoid further lose.
Described accumulator both can provide oil sources for whole hydraulic system, it is also possible to hydraulic system plays the effect of buffering.
The present invention is in use, requirement according to disintegrating machine discharging-material size and the power of yielding, completing roll gap gap parameter by input equipment and yielding power sets, overflow valve 9 is adjusted to setting pressure simultaneously, system is controlled by native system according to the disintegrating machine operational factor of detection.When disintegrating machine does not transship, system carries out position-force control, and namely linear electric motors 5 are controlled by positional information according to displacement transducer 4 detection in real time, and linear electric motors 5 regulate the motion of adjustable bearing base 2 and then dancer rools gap by connecting rod;When the roll gap gap detected is more than nominal distance, linear electric motors promote adjustable bearing base 2 to move toward 5, when the distance of detection is less than nominal distance, linear electric motors 5 are pulled back adjustable bearing base 2, when roll gap being detected apart from satisfied requirement, linear electric motors 5 are failure to actuate, and are in slidably state, so will not linear electric motors 5 be damaged when overload.Namely Programmable Logic Controller is after the data reading displacement transducer 4, provides control signal by multilevel iudge, in order to control the motion of linear electric motors 5, realizes the Automatic adjusument of action roller roll gap.When linear electric motors 5 promote action roller 12 to move forward time, the oil in accumulator 6 is by check valve 8 influent cylinder pressure, thus connecting rod can promote adjustable bearing base 2 to move forward.
Buffering hydraulic cylinder 3 is carried out power closed loop control by native system, and when overload occurs in disintegrating machine, check valve 8 can allow hydraulic oil from proportional pressure control valve 7 by returning to accumulator 6, rather than can be returned directly to accumulator 6.Data according to pressure transducer 10 detection being arranged in hydraulic cylinder contrast with system nominal pressure, when the pressure of detection is more than rated pressure, pressure and ratio versus's example pressure-control valve 7 of rated pressure according to detection are controlled, ratio is more big, and the aperture of proportional pressure control valve 7 is more big.When the pressure of detection is less than rated pressure, proportional pressure control valve 7 does not work.Namely Programmable Logic Controller is after the data reading pressure transducer 10, provides control signal by multilevel iudge, in order to control the pressure of proportional pressure control valve 7, it is achieved action roller 12 constant force during disintegrating machine overload makes a concession protection.Native system can also export roll gap gap and the disintegrating machine load actual information confession host computer display monitoring of disintegrating machine in real time simultaneously.
Present configuration is simple and practical, and the fast and stable that can be realized action roller roll gap by linear electric motors 5 is accurately regulated, it is not necessary to provide other equipment, additionally also by buffering hydraulic cylinder, disintegrating machine overload is protected, and maintenance cost is low, and actual application value is high.