CN110479449A - Crusher based on pressure change rate charging control method and crusher extremely - Google Patents
Crusher based on pressure change rate charging control method and crusher extremely Download PDFInfo
- Publication number
- CN110479449A CN110479449A CN201910756990.4A CN201910756990A CN110479449A CN 110479449 A CN110479449 A CN 110479449A CN 201910756990 A CN201910756990 A CN 201910756990A CN 110479449 A CN110479449 A CN 110479449A
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- Prior art keywords
- pressure value
- pressure
- early warning
- change rate
- crusher
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Classifications
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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
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/22—Feed or discharge means
- B02C18/2225—Feed means
-
- 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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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses the charging control methods extremely of the crusher based on pressure change rate, comprising: acquisition fluid pressure line pressure value；By line pressure compared with the first early warning pressure value, if it is larger than or equal to shutdown of then alarming；Judge whether line pressure continuously rises, if continuous rise times reach early warning number and line pressure reaches the second early warning pressure value, shutdown of alarming；Judge whether current hydraulic line pressure value is more than reversal pressure value, if it exceeds then starting hydraulic motor reversion, otherwise continues cycling through.The technical program detects the pressure value of fluid pressure line using pressure sensor; pressure signal can be converted into 4-20 milliamperes of current signals within several seconds; on the one hand PLC continuously detects the change rate of this current signal; when change rate is greater than the set value; i.e. it is believed that bulk metal charging is abnormal, alarms and shut down；On the other hand, PLC judges whether hydraulic line pressure value continuously rises, and leads to girff stall quickly to judge that entire bundle material is excessive.
Description
Technical field
The present invention relates to refuse grinders, and in particular to a kind of crusher exception charging controlling party based on pressure change rate
Method and crusher.
Background technique
With the great attention that the enhancing of global environmental consciousness, especially China utilize Waste sorting recycle, rubbish is broken
Broken machine using more prevalent.The power of crusher is divided into electric drive and hydraulic-driven two major classes, hydraulic-driven is big with its power,
Reaction is fast, control is simple, runs smoothly and very popular.Hydraulic-driven is usually that hydraulic motor passes through speed reducer and cutter shaft phase
Even, band movable arbor rotary work, oil pump provide power.Due to the multiplicity of rubbish material morphological differences and feeding manner to be broken
, inevitably there is the phenomenon that gets stuck of girff, as long as the material of clamping stagnation is not to be difficult to broken hard gold in the discontinuity of property and charging
Belong to etc., after can first shutting down, cutter shaft is then inverted, the material of clamping stagnation is exited, then temporary stoppage is followed by first rotating forward one
A cutter shaft allows the axis first to cut several seconds, and subsequent another cutter shaft also puts into rotating forward, and such two axis reenter normal work
State ----opposite direction rotating (rotating forward).Usually in this way: rotating forward ----get stuck reversion --- and the circulation then rotated forward, in a clamping stagnation object
Material occur after be no more than setting number can by elimination (usually 3-5 times).It is not eliminated also more than set number, just
It alarms shutdown, is manually checked, see that this is mesh whether with the presence of broken material (such as big iron) is difficult to inside girff
The preceding common control method of crusher.It is related with material characteristic and feeding manner to set number, specifically by empirically determined.
Oil circuit control principle is as follows: main motor drives oil pump, and oil pump drives hydraulic motor again.The A mouth of every oil pump and B mouthfuls
One pressure gauge is respectively housed, oil pump is variable pump, and flow is adjusted by proportioning valve.When there is catching phenomenon, program according to
Ratio valve opening is automatically adjusted according to the feedback pressure detected, reduces flow and increases accordingly oil pressure and keep oil pump power constant.
The feedback pressure of continuous detection oil circuit closes proportioning valve when pressure reaches setting value immediately, and then starting reversion, delay
Restore to rotate forward after arriving.
Due to being that invariable power is adjusted, when overloading, Main motor current variation is not obvious, and only passes through feedback herein
The change rate of pressure can just judge the severity of clamping stagnation.
This method have the following deficiencies: (1) actually or cannot be distinguished from causing to get stuck because overcharge leads to blocking
It feeds and few, but has been mingled in material and has been difficult to broken bulk metal, such as pig iron.The presence of bulk metal certainly will cause
Cutter tooth is damaged in multiple positive and negative rotation circulation, causes certain loss.(2) due to not having to distinguish the severity to get stuck, if it is
Lesser agglomerate, by positive and negative rotation several times circulation it can be crushed, if but entire bundle material filled girff, make cutter shaft
" difficult to move even one step ", It dones't help the situation for positive and negative rotation circulation, wastes the time.
Summary of the invention
In order to solve the above technical problems, the crusher that the object of the present invention is to provide a kind of based on pressure change rate it is abnormal into
Expect control method and hydraulic-driven crusher.
The technical scheme adopted by the invention is as follows:
Crusher based on pressure change rate charging control method extremely, includes the following steps
The hydraulic line pressure value of acquisition driving crusher；
By the hydraulic line pressure value compared with the first early warning pressure value of default, if it is larger than or equal to then alarming
It shuts down, otherwise enters in next step；
Judge whether the hydraulic line pressure value continuously rises, if continuous rise times reach early warning number and hydraulic
Line pressure reaches the second early warning pressure value, then shutdown of alarming, and otherwise enters in next step；Wherein, the second early warning pressure
Value is less than the first early warning pressure value；
Judge whether presently described hydraulic line pressure value is more than preset reversal pressure value, if it exceeds then starting hydraulic
Motor reversion, otherwise continues cycling through.
Further, the hydraulic line pressure value is acquired by pressure sensor, and the pressure sensor is by fluid pressure line pressure
Power, which is converted into feeding back to PLC after current signal, to be judged.
Preferably, the period of the hydraulic line pressure value of acquisition driving crusher is 0.25 second.
Preferably, the first early warning pressure value is 350bar, and the second early warning pressure value is 320bar.
Further, the early warning number is 3 times to 6 times.
Preferably, the early warning number is 4 times.
The invention also includes the technical solution with the same inventive concept of the above method, i.e., become described in a kind of application based on pressure
The crusher of the crusher of rate charging control method extremely, including main motor, variable pump, hydraulic motor, pressure sensor, ratio
Example valve, PLC, girff, the main motor are connect so that for driving variable pump work, the variable pump passes through hydraulic tube with variable pump
Road is connect for driving hydraulic motor to rotate with hydraulic motor, and the proportioning valve is used for the flow of regulated variable pump, the pressure
Sensor is used to detect the pressure value of the fluid pressure line and feeds back to the PLC, and the PLC is passed with main motor, pressure respectively
Sensor, proportioning valve are electrically connected, and are equipped with the cutter shaft driven by the hydraulic motor in the girff.
Further, the variable pump, hydraulic motor, pressure sensor, proportioning valve, cutter shaft have two groups.
The specific embodiment of the invention the utility model has the advantages that
The technical program can be turned pressure signal within several seconds using the pressure value of pressure sensor detection fluid pressure line
On the one hand the 4-20 milliampere current signal for changing standard into continuously detects the change rate of this current signal then inside PLC, when
When change rate is greater than a certain setting value, i.e., it is believed that bulk metal charging is abnormal, alarms and shut down, multiple positive and negative rotation is avoided to recycle
Middle damage cutter tooth；On the other hand, PLC judges whether hydraulic line pressure value continuously rises, quickly to judge being entire bundle material
It is excessive to lead to girff stall, so that shutdown of alarming, avoids meaningless positive and negative rotation, to save the time.
Detailed description of the invention
Below by the drawings and the specific embodiments, the present invention will be described in detail.
Fig. 1 is the embodiment flow chart of crusher of the present invention charging control method extremely；
Fig. 2 is the embodiment schematic diagram of crusher of the present invention.
Specific embodiment
As shown in Figure 1, including the following steps for the present invention is based on the crusher of pressure change rate charging control method extremely
The hydraulic line pressure value of acquisition driving crusher, is denoted as VD600；
By the hydraulic line pressure value compared with the first early warning pressure value of default, if it is larger than or equal to then alarming
It shuts down, otherwise enters in next step；The first early warning pressure value is 350bar in the present embodiment；
Judge whether the hydraulic line pressure value continuously rises, if continuous rise, integrating counter, when number reaches
To early warning number (4 times) and hydraulic line pressure value reaches the second early warning pressure value, then is judged as girff stall, and alarm is shut down,
Otherwise enter in next step；Wherein, the second early warning pressure value is less than the first early warning pressure value, the second early warning pressure value
320bar, VD604 are the hydraulic line pressure value of last interrupt scanning, initial value 0；
Judge whether presently described hydraulic line pressure value is more than preset reversal pressure value VD716, if it exceeds then opening
The reversion of hydrodynamic pressure motor, otherwise continues cycling through.
Specifically, the hydraulic line pressure value is acquired by pressure sensor, the pressure sensor is by fluid pressure line pressure
Power, which is converted into feeding back to PLC after current signal, to be judged.
Wherein, acquisition driving crusher hydraulic line pressure value period be 0.25 second, the early warning number be 3 times extremely
6 times.Preferred early warning number is 4 times.In figure with 1 second pressure whether reach 320bar be judge in girff whether there is foreign matter
It is only example for foundation, it specifically can be depending on actual hydraulic pressure system and the material being crushed compactness extent.
The inventive concept of the technical program is that, there are when the foreign matters such as bulk metal, hydraulic line pressure value can greatly, setting
One biggish early warning value may recognize that.And when big there are hard part solid material stall, hydraulic line pressure value is more normal
To rise fast many when being crushed common rubbish, therefore the shorter number of setting reaches another early warning value and can identify, therefore, is based on
Pressure change rate, this programme can be turned pressure signal within several seconds using the pressure value of pressure sensor detection fluid pressure line
On the one hand the 4-20 milliampere current signal for changing standard into continuously detects the change rate of this current signal then inside PLC, when
When change rate is greater than a certain setting value, i.e., it is believed that bulk metal charging is abnormal, alarms and shut down, multiple positive and negative rotation is avoided to recycle
Middle damage cutter tooth；On the other hand, PLC judges whether hydraulic line pressure value continuously rises, quickly to judge being entire bundle material
It is excessive to lead to girff stall, so that shutdown of alarming, avoids meaningless positive and negative rotation, to save the time.
The invention also includes the technical solution with the same inventive concept of the above method, i.e., become described in a kind of application based on pressure
The crusher of the crusher of rate charging control method extremely, including main motor 1, variable pump 2, hydraulic motor 3, pressure sensor
4, proportioning valve 5, PLC, girff 6, the main motor 1 are connect for driving the work of variable pump 2, the variable pump 2 with variable pump 2
It is connect with hydraulic motor 3 for driving hydraulic motor 3 to rotate by fluid pressure line, the proportioning valve 5 is for regulated variable pump 2
Flow, the pressure sensor 4 be used for detect the fluid pressure line pressure value and feed back to the PLC, the PLC respectively with
Main motor 1, pressure sensor 4, proportioning valve 5 are electrically connected, and are equipped with the knife driven by the hydraulic motor 3 in the girff 6
Axis 7.
Further expansion as above-mentioned technical proposal, above-mentioned variable pump 2, hydraulic motor 3, pressure sensor 4, proportioning valve
5, cutter shaft 7 has two groups.
Above embodiments are explanation of the invention, and still, the invention is not limited to specific in above embodiment
Details, a variety of equivalent substitutes or simple variant side that those skilled in the art carries out within the scope of the technical concept of the present invention
Formula is within the scope of protection of the invention.
Claims (8)
1. the charging control method extremely of the crusher based on pressure change rate, which is characterized in that include the following steps
The hydraulic line pressure value of acquisition driving crusher；
By the hydraulic line pressure value compared with the first early warning pressure value of default, stop if it is larger than or equal to then alarm
Otherwise machine enters in next step；
Judge whether the hydraulic line pressure value continuously rises, if continuous rise times reach early warning number and fluid pressure line
Pressure value reaches the second early warning pressure value, then shutdown of alarming, and otherwise enters in next step；Wherein, the second early warning pressure value is small
In the first early warning pressure value；
Judge whether presently described hydraulic line pressure value is more than preset reversal pressure value, if it exceeds then starting hydraulic motor
Reversion, otherwise continues cycling through.
2. the crusher according to claim 1 based on pressure change rate charging control method extremely, it is characterised in that: institute
Hydraulic line pressure value is stated to be acquired by pressure sensor, the pressure sensor by hydraulic line pressure be converted into current signal it
After feed back to PLC and judged.
3. the crusher according to claim 1 based on pressure change rate charging control method extremely, it is characterised in that: adopt
The period of the hydraulic line pressure value of collection driving crusher is 0.25 second.
4. the crusher according to claim 1 based on pressure change rate charging control method extremely, it is characterised in that: institute
Stating the first early warning pressure value is 350bar, and the second early warning pressure value is 320bar.
5. the crusher according to claim 1 based on pressure change rate charging control method extremely, it is characterised in that: institute
Stating early warning number is 3 times to 6 times.
6. the crusher according to claim 5 based on pressure change rate charging control method extremely, it is characterised in that: institute
Stating early warning number is 4 times.
7. a kind of using the broken of any crusher based on pressure change rate of claim 1-6 charging control method extremely
Machine, which is characterized in that including main motor, variable pump, hydraulic motor, pressure sensor, proportioning valve, PLC, girff, the main electricity
Machine is connect so that for driving variable pump work, the variable pump is connect with hydraulic motor for driving by fluid pressure line with variable pump
The rotation of hydrodynamic pressure motor, the proportioning valve are used for the flow of regulated variable pump, and the pressure sensor is described hydraulic for detecting
The pressure value of pipeline simultaneously feeds back to the PLC, and the PLC is electrically connected with main motor, pressure sensor, proportioning valve respectively, institute
State the cutter shaft for being equipped in girff and being driven by the hydraulic motor.
8. crusher according to claim 7, which is characterized in that the variable pump, hydraulic motor, pressure sensor, ratio
Example valve, cutter shaft have two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756990.4A CN110479449B (en) | 2019-08-16 | 2019-08-16 | Pressure change rate-based crusher abnormal feeding control method and crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756990.4A CN110479449B (en) | 2019-08-16 | 2019-08-16 | Pressure change rate-based crusher abnormal feeding control method and crusher |
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| Publication Number | Publication Date |
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| CN110479449A true CN110479449A (en) | 2019-11-22 |
| CN110479449B CN110479449B (en) | 2020-12-15 |
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| CN201910756990.4A Active CN110479449B (en) | 2019-08-16 | 2019-08-16 | Pressure change rate-based crusher abnormal feeding control method and crusher |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116273426A (en) * | 2023-05-19 | 2023-06-23 | 四川磊蒙机械设备有限公司 | Sand and stone processing monitoring system and method |
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| US4545537A (en) * | 1981-03-11 | 1985-10-08 | Matsushita Electric Industrial Company, Limited | Shredder with increased reversed unlocking torque |
| CA1219936A (en) * | 1984-04-13 | 1987-03-31 | Dan S. Burda | Speed-responsive reversing hydraulic drive for rotary shredder |
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| CN108311231A (en) * | 2017-01-18 | 2018-07-24 | 江苏省机械研究设计院有限责任公司 | A kind of slag breaker driving method |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4034918A (en) * | 1975-08-06 | 1977-07-12 | Saturn Manufacturing, Inc. | Drive arrangement for rotary shredding apparatus |
| US4545537A (en) * | 1981-03-11 | 1985-10-08 | Matsushita Electric Industrial Company, Limited | Shredder with increased reversed unlocking torque |
| CA1219936A (en) * | 1984-04-13 | 1987-03-31 | Dan S. Burda | Speed-responsive reversing hydraulic drive for rotary shredder |
| CN104858041A (en) * | 2014-02-25 | 2015-08-26 | 徐千里 | Intelligent processor for processing kitchen food wastes |
| CN105214795A (en) * | 2015-11-03 | 2016-01-06 | 湖南三一路面机械有限公司 | A kind of shear crusher and broken control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116273426A (en) * | 2023-05-19 | 2023-06-23 | 四川磊蒙机械设备有限公司 | Sand and stone processing monitoring system and method |
| CN116273426B (en) * | 2023-05-19 | 2023-08-25 | 四川磊蒙机械设备有限公司 | Sand and stone processing monitoring system and method |
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| Publication number | Publication date |
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| CN110479449B (en) | 2020-12-15 |
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