CN109201303B - Optimization control method for improving crushing efficiency of hydraulic crusher - Google Patents
Optimization control method for improving crushing efficiency of hydraulic crusher Download PDFInfo
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- CN109201303B CN109201303B CN201811088633.7A CN201811088633A CN109201303B CN 109201303 B CN109201303 B CN 109201303B CN 201811088633 A CN201811088633 A CN 201811088633A CN 109201303 B CN109201303 B CN 109201303B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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Abstract
The invention discloses an optimized control method for improving the crushing efficiency of a hydraulic crusher, which comprises a control unit, an engine and an oil pump driven by the engine, wherein the oil pump is connected with the motor through a hydraulic pipeline, the motor drive shaft is connected with a gearbox drive shaft, the gearbox drive shaft is connected with and drives a cutter shaft of a cutter box to rotate, and the engine is connected with and controlled by the control unit.
Description
Technical Field
The invention relates to an optimization control method, in particular to an optimization control method for improving the crushing efficiency of a hydraulic crusher.
Background
In the working process of the crusher, if the same stable crushing speed or acceleration is used for crushing all the time, when various complex crushed materials are encountered, the forward rotation-reverse rotation-forward rotation can be easily repeated for multiple times to and fro, so that the actual production efficiency is low, and in order to improve the adaptability of the complex crushed materials, different crushing speeds and different acceleration crushing controls are carried out on the materials with different stable working pressures, so that the actual operation efficiency of the crusher can be greatly improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an optimal control method for improving the crushing efficiency of a hydraulic crusher.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the optimized control method for improving the crushing efficiency of the hydraulic crusher comprises a control unit, an engine and an oil pump driven by the engine, wherein the oil pump is connected with a motor through a hydraulic pipeline, a motor driving shaft is connected with a gearbox driving shaft, the gearbox driving shaft is connected with and drives a cutter shaft of a cutter box to rotate, the engine is connected with the control unit and is controlled by the control unit, and the optimized control method is characterized in that: the liquid medium delivery outlet department of oil pump is equipped with the pressure sensor of monitoring fluid pressure, be equipped with the rotational speed sensor of monitoring motor drive axle rotational speed on the motor drive axle, pressure sensor and rotational speed sensor all are connected with the control unit to send pressure parameter and rotational speed parameter to the control unit, its working method is as follows:
firstly, initially setting:
initial parameter Q of oil pump displacement preset in control program loaded by control unit0Minimum discharge parameter Q of oil pumpminMaximum pressure parameter P of oil pumpmaxAnd multiple discharge control modes of the crusher, wherein the discharge control modes comprise a mode 1 to a mode N, the N is a natural number greater than 1, and the mode 1 corresponds to an oil pump discharge parameter Q1And a critical parameter P of the oil pump pressure1The mode N corresponds to an oil pump displacement parameter QnAnd a critical parameter P of the oil pump pressuren，
Secondly, crushing working process:
step 1: the control unit follows the initial parameter Q0The oil pump is instructed to output in the positive direction to carry out crushing work, and the pressure sensor feeds back an oil pump pressure instant parameter P in unit time during workIs justFor the control unit, the control unit receives PIs justThen compare PIs justAnd P1If P isIs just≥P1Then proceed to the next step, then PIs justComparing with the P value of the next step; if P isIs just＜P1The control unit controls the oil pump displacement according to Q1Output, PIs justComparing with the P value in the next step, if P isIs justIf the value is less than the P value in the next step, entering a mode 1 to work; if P isIs justIf the P value is larger than or equal to the P value in the next step, the next step is started, and the control unit controls the displacement of the oil pump to be in accordance with Q in the next step2The output of the value is carried out,
until the final step N: in this step PIs justAnd PnA comparison is made, and Pn＝PmaxIf P isIs just≥PmaxThe control unit controls the oil pump displacement according to QminOutputting, reversely outputting the oil pump, and entering a reverse crushing mode; if P isIs just＜PmaxThe control unit controls the oil pump displacement according to QnOutput and then compare PIs justAnd PmaxIf P isIs just＜PmaxEntering a mode N for working; if P isIs just≥PmaxThe control unit controls the oil pump displacement according to QminOutputting, reversely outputting the oil pump, entering a reverse crushing mode,
when the duration time of the reverse crushing mode reaches the set time T, the control unit controls the positive output of the oil pump and controls the positive output of the oil pump according to an initial parameter Q0And (5) instructing the oil feeding pump to perform crushing work and starting the next cycle.
The displacement control mode comprises a mode 1, a mode 2, a mode 3 and a mode 4, wherein the displacement of the oil pump in the mode 1 is constant all the time; in the mode 2, the displacement of the oil pump is increased at a larger acceleration and then increased at a smaller acceleration along with the increase of time; the oil pump displacement is increased linearly with the time in the mode 3; in mode 4, the displacement of the oil pump increases with a small acceleration and then with a large acceleration as time increases.
The invention has the beneficial effects that: the method mainly carries out linkage control on the crushing speed control and the working pressure required by the actual crushed material, and selects different crushing speed (namely oil pump displacement control) control modes when the crushing pressure is in different load pressures, so that the acceleration of material crushing and pulling is improved, the crushing pressure overpressure is reduced, the inversion times are reduced, the adaptability of material crushing is improved, and the working efficiency is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a hardware schematic block diagram of the present invention;
FIG. 2 is a functional block diagram of the present invention;
FIG. 3 is a graph of mode 1 through mode 4 oil pump displacement over time.
Detailed Description
Referring to fig. 1 to 3, the invention discloses an optimized control method for improving the crushing efficiency of a hydraulic crusher, which comprises a control unit, an engine and an oil pump driven by the engine, wherein the engine adopts a motor or a diesel engine; the oil pump adopts a closed oil pump, the closed oil pump can be reversed in two directions and the displacement can be changed, an opening A and an opening B of the closed oil pump are respectively connected with an opening A and an opening B of two motors through hydraulic pipelines, the openings B and the openings A of the two motors are directly connected through the hydraulic pipelines, two motor driving shafts are connected with a transmission driving shaft, the transmission driving shaft directly drives a cutter box cutter shaft, the two cutter box cutter shafts move to crush materials thrown into the cutter box, a pressure sensor oil hydraulic pressure force is respectively installed at the opening A and the opening B of the hydraulic pump, and a pressure sensor signal is connected into a control unit; the two motor driving shafts are respectively provided with a rotating speed sensor, and signals of the rotating speed sensors are connected to the control unit; the displacement and direction of the oil pump are controlled by a control unit to output signals for real-time control; the driving parameters (such as rotating speed, oil consumption, torque, start-stop control and the like) of the engine are communicated with the control unit through the CAN bus, and the working mode is as follows:
firstly, initially setting:
initial parameter Q of oil pump displacement preset in control program loaded by control unit0Minimum discharge parameter Q of oil pumpminMaximum pressure parameter P of oil pumpmaxAnd multiple displacement control modes of the crusher, wherein the displacement control modes comprise a mode 1, a mode 2 till a mode 4, and the mode 1 corresponds to an oil pump displacement parameter Q1And a critical parameter P of the oil pump pressure1Mode 2 corresponds to a pump displacement parameter Q2And corresponding to a critical value P of the pressure parameter of the oil pump2Mode 3 corresponds to an oil pump displacement parameter Q3And corresponding to a critical value P of the pressure parameter of the oil pump3Mode 4 corresponds to an oil pump displacement parameter Q4And corresponding to a critical value P of the pressure parameter of the oil pump4，P1To P4Is not greater than PmaxOf course, the oil pump displacement control mode can be divided into more modes, so as to adapt to more complicated crushing working process, thereby achieving the purposeThe effect is more optimized.
As shown in fig. 2, in the mode 1, the oil pump discharge capacity is always constant, and is in a relatively easy crushing state, and the maximum crushing speed can be achieved by performing stable speed control; in the mode 2, the displacement of the oil pump is increased at a larger acceleration and then at a smaller acceleration along with the increase of time, and the convex type control mode is adopted to carry out low-acceleration crushing, so that better working efficiency can be achieved; in the mode 3, the discharge capacity of the oil pump is increased linearly along with the increase of time, and the mode is a straight line oblique line acceleration mode, so that a certain acceleration can be realized when the material is difficult to break, and the material is prevented from being blocked; increase oil pump discharge capacity with a less acceleration increase then with a great acceleration increase again along with time in mode 4, for the spill control mode, can carry out big acceleration breakage, when difficult broken material, can realize better adaptability, reduce card material risk.
Secondly, crushing working process:
step 1: the control unit follows the initial parameter Q0The oil pump is instructed to output in the positive direction to carry out crushing work, and the pressure sensor feeds back an oil pump pressure instant parameter P in unit time during workIs justFor the control unit, the control unit receives PIs justThen compare PIs justAnd P1If P isIs just≥P1Go to step 2, PIs justWith P of step 22Comparing; if P isIs just＜P1The control unit controls the oil pump displacement according to Q1Output then PIs justWith P of step 22By comparison, if PIs just＜P2Entering a mode 1 for working; if P isIs just≥P2Then step 2 is entered, and the control unit controls the oil pump displacement according to Q of step 22And outputting the signals to the computer for output,
step 2: then compare PIs justAnd P2If P isIs just≥P2Go to step 3, PIs justWith P of step 33Comparing; if P isIs just＜P2The control unit controls the oil pump displacement according to Q2Output then PIs justWith P of step 33By comparison, the process of the first and second steps,if P isIs just＜P3Entering a mode 2 for working; if P isIs just≥P3Then step 3 is entered, and the control unit controls the oil pump displacement according to Q of step 33And outputting the signals to the computer for output,
and step 3: then compare PIs justAnd P3If P isIs just≥P3Go to step 4, PIs justWith P of step 44Comparing; if P isIs just＜P3The control unit controls the oil pump displacement according to Q3Output then PIs justWith P of step 44By comparison, if PIs just＜P4Entering a mode 3 for working; if P isIs just≥P4Then step 4 is entered, and the control unit controls the oil pump displacement according to Q of step 44And outputting the signals to the computer for output,
until the final step 4: in this step PIs justAnd P4A comparison is made, and P4＝PmaxIf P isIs just≥PmaxThe control unit controls the oil pump displacement according to QminOutputting, reversely outputting the oil pump, and entering a reverse crushing mode; if P isIs just＜PmaxThe control unit controls the oil pump displacement according to Q4Output and then compare PIs justAnd PmaxIf P isIs just＜PmaxEntering a mode 4 for working; if P isIs just≥PmaxThe control unit controls the oil pump displacement according to QminOutputting, reversely outputting the oil pump, entering a reverse crushing mode,
when the duration time of the reverse crushing mode reaches the set time T, the control unit controls the positive output of the oil pump and controls the positive output of the oil pump according to an initial parameter Q0And (5) instructing the oil feeding pump to perform crushing work and starting the next cycle.
In conclusion, according to the method, the risk of reducing the working efficiency due to material blockage is further reduced by selecting the crushing modes under different pressures, the working efficiency of the fragile materials is considered, the adaptability of the product can be well improved, and the equipment efficiency is improved.
The above-mentioned detailed description is provided for the optimized control method for improving the crushing efficiency of the hydraulic crusher, and the principle and the implementation manner of the present invention are explained by applying specific examples, and the description of the above-mentioned embodiments is only used for helping to understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (2)
1. The optimized control method for improving the crushing efficiency of the hydraulic crusher comprises a control unit, an engine and an oil pump driven by the engine, wherein the oil pump is connected with a motor through a hydraulic pipeline, a motor driving shaft is connected with a gearbox driving shaft, the gearbox driving shaft is connected with and drives a cutter shaft of a cutter box to rotate, the engine is connected with the control unit and is controlled by the control unit, and the optimized control method is characterized in that: the liquid medium delivery outlet department of oil pump is equipped with the pressure sensor of monitoring fluid pressure, be equipped with the rotational speed sensor of monitoring motor drive axle rotational speed on the motor drive axle, pressure sensor and rotational speed sensor all are connected with the control unit to send pressure parameter and rotational speed parameter to the control unit, its working method is as follows:
firstly, initially setting:
initial parameter Q of oil pump displacement preset in control program loaded by control unit0Minimum discharge parameter Q of oil pumpminMaximum pressure parameter P of oil pumpmaxAnd multiple discharge control modes of the crusher, wherein the discharge control modes comprise a mode 1 to a mode N, the N is a natural number greater than 1, and the mode 1 corresponds to an oil pump discharge parameter Q1And a critical parameter P of the oil pump pressure1The mode N corresponds to an oil pump displacement parameter QnAnd a critical parameter P of the oil pump pressuren，
Secondly, crushing working process:
step 1: the control unit follows the initial parameter Q0The oil pump is instructed to output in the positive direction to carry out crushing work, and the pressure sensor feeds back an oil pump pressure instant parameter P in unit time during workIs justTo the control unit, controlUnit receiving PIs justThen compare PIs justAnd P1If P isIs just≥P1Then proceed to the next step, then PIs justComparing with the P value of the next step; if P isIs just＜P1The control unit controls the oil pump displacement according to Q1Output, PIs justComparing with the P value in the next step, if P isIs justIf the value is less than the P value in the next step, entering a mode 1 to work; if P isIs justIf the P value is larger than or equal to the P value in the next step, the next step is started, and the control unit controls the displacement of the oil pump to be in accordance with Q in the next step2The output of the value is carried out,
until the final step N: in this step PIs justAnd PnA comparison is made, and Pn＝PmaxIf P isIs just≥PmaxThe control unit controls the oil pump displacement according to QminOutputting, reversely outputting the oil pump, and entering a reverse crushing mode; if P isIs just＜PmaxThe control unit controls the oil pump displacement according to QnOutput and then compare PIs justAnd PmaxIf P isIs just＜PmaxEntering a mode N for working; if P isIs just≥PmaxThe control unit controls the oil pump displacement according to QminOutputting, reversely outputting the oil pump, entering a reverse crushing mode,
when the duration time of the reverse crushing mode reaches the set time T, the control unit controls the positive output of the oil pump and controls the positive output of the oil pump according to an initial parameter Q0And (5) instructing the oil feeding pump to perform crushing work and starting the next cycle.
2. An optimal control method for improving the crushing efficiency of a hydraulic crusher according to claim 1, characterized in that: the displacement control mode comprises a mode 1, a mode 2, a mode 3 and a mode 4, wherein the displacement of the oil pump in the mode 1 is constant all the time; in the mode 2, the displacement of the oil pump is increased at a larger acceleration and then increased at a smaller acceleration along with the increase of time; the oil pump displacement is increased linearly with the time in the mode 3; in mode 4, the displacement of the oil pump increases with a small acceleration and then with a large acceleration as time increases.
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| US4793561A (en) * | 1982-05-24 | 1988-12-27 | Mac Corporation Of America | Speed-responsive reversing hydraulic drive for rotary shredder |
| JP3962670B2 (en) * | 2002-10-25 | 2007-08-22 | 株式会社アーステクニカ | Hydraulic circuit of a rotary crusher and control method of the hydraulic circuit |
| JP2006175393A (en) * | 2004-12-24 | 2006-07-06 | Hitachi Constr Mach Co Ltd | Wood crushing machine |
| JP4240075B2 (en) * | 2006-07-14 | 2009-03-18 | コベルコ建機株式会社 | Hydraulic control circuit of excavator |
| CN201669152U (en) * | 2010-04-20 | 2010-12-15 | 绿友机械集团股份有限公司 | Automatic control system for branch/leaf shredders |
| CN202185344U (en) * | 2011-03-03 | 2012-04-11 | 安徽惊天液压智控股份有限公司 | Hydraulic drive system of fixed crusher |
| CN202212220U (en) * | 2011-07-18 | 2012-05-09 | 成都利君实业股份有限公司 | Hydraulic system for roller press |
| CN203018161U (en) * | 2012-12-31 | 2013-06-26 | 中山市恒动机械制造有限公司 | Hydraulic system of double-shaft crusher |
| CN103350025A (en) * | 2013-06-28 | 2013-10-16 | 洛阳宝诺重型机械有限公司 | Fuzzy control system for single cylinder hydraulic cone crusher |
| US9937504B2 (en) * | 2014-03-26 | 2018-04-10 | Granutech-Saturn Systems Corp. | Industrial shredder |
| KR101638451B1 (en) * | 2014-07-30 | 2016-07-25 | 대모 엔지니어링 주식회사 | Stepless variable auto stroke hydraulic breaker system |
| CN204051761U (en) * | 2014-09-04 | 2014-12-31 | 大同北方煤机设备有限公司 | The adjustable double-geared roller crusher of particle size after cracking |
| US10451094B2 (en) * | 2015-09-28 | 2019-10-22 | Kubota Corporation | Hydraulic system of work machine |
| CN105214795B (en) * | 2015-11-03 | 2018-11-06 | 湖南三一路面机械有限公司 | A kind of shear crusher and its broken control method |
| CN205401282U (en) * | 2016-02-26 | 2016-07-27 | 华侨大学 | Breaker hydraulic control system |
| CN107051707A (en) * | 2017-01-23 | 2017-08-18 | 柳工美卓建筑设备(常州)有限公司 | A kind of on-line control system for movable Crushing work station |
| CN106704530B (en) * | 2017-03-09 | 2023-09-19 | 桂林星辰科技股份有限公司 | Servo pump control hydraulic rotation driving system and control method |
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Address after: 528437 Building 8, No.6 Jingye Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: ZHONGSHAN SHREDDER MACHINERY Co.,Ltd. Patentee after: HUNAN HAIGE LISHI INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 528437 Building 8, No.6 Jingye Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN SIRUIDE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee before: HUNAN HAIGE LISHI INTELLIGENT TECHNOLOGY Co.,Ltd. |
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