CN110219916A - A kind of monitoring method and system of clutch and brake switch operating state - Google Patents
A kind of monitoring method and system of clutch and brake switch operating state Download PDFInfo
- Publication number
- CN110219916A CN110219916A CN201910646882.1A CN201910646882A CN110219916A CN 110219916 A CN110219916 A CN 110219916A CN 201910646882 A CN201910646882 A CN 201910646882A CN 110219916 A CN110219916 A CN 110219916A
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- clutch
- pressure value
- pressure
- brake
- reducing valve
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002828 fuel tank Substances 0.000 claims description 12
- 230000000052 comparative effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 25
- 230000009286 beneficial effect Effects 0.000 description 11
- 238000000926 separation method Methods 0.000 description 7
- 238000011217 control strategy Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/08—Clutches
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/10—Brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/008—Arrangements for monitoring working conditions, e.g. wear, temperature of clutches
Abstract
The present invention provides the monitoring methods and system of a kind of clutch and brake switch operating state, this method comprises: being acquired respectively close to pressure data on the pipeline of clutch and brake and being compared；Judge whether clutch and brake work normally according to comparing result.By being related to monitoring method, find whether clutch and controller work normally in time, when repairing to control system, user knows specifically clutch or brake troubles, repairs convenient for user to control system, improves maintenance efficiency.
Description
Technical field
The present invention relates to the prisons of machine control techniques field more particularly to a kind of clutch and brake switch operating state
Survey method and system.
Background technique
When having ensilage machine engine harvesting, by engine output power, main clutch is combined, and feed belt is passed
It passs, is gathered in；And work as driving process, harvesting stops, main clutch separation, and brake clamps main clutch discs, in braking
State, when realizing the non-harvesting of ensilage machine drive belt system braking safety and main clutch combine lower output to fill
The power of foot carries out harvesting.
The switching between the clutch and brake of ensilage machine is manually to be operated in the prior art, is controlled in ensilage machine
The first switch of clutch folding and the second switch of control brake folding are independently arranged, and user needs voluntarily to be opened and closed first and opens
Pass and second switch.Ensilage machine manual operation error rate in the prior art is larger, not can determine that whether ensilage machine works normally,
Labor intensity is larger.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of clutch and brake to cut
The monitoring method and system for the state that changes jobs.
The technical scheme to solve the above technical problems is that a kind of clutch and brake switch operating state
Monitoring method, comprising: acquired respectively close to pressure data on the pipeline of clutch and brake and compared；
Judge whether clutch and brake work normally according to comparing result.
The beneficial effects of the present invention are: being improved by the monitoring method of design clutch and brake switch operating state
The safety and reliability of system.
Based on the above technical solution, the present invention can also be improved as follows.
Further, it pressure data and compares on the pipeline acquired respectively close to the clutch and brake
Before step further include:
Current start-up mode includes: the first end port for controlling the pressure reducing valve and the third end port of the pressure reducing valve
The first end port for being connected to, controlling the pilot operated valve device is connected to the third end port of the pilot operated valve device, so that at the brake
In clamping on-position；
Under the start-up mode, at the same control the first end port shutdown of proportional pressure-reducing valve, proportional pressure-reducing valve second
End port is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Current clutch binding pattern includes: the first end port that the proportional pressure-reducing valve is controlled by the first electric signal
It is connected to the third end port of the proportional pressure-reducing valve, the spool of pilot operated valve device makes in the case where proportional pressure-reducing valve output oil pressure is pushed and moved
The port shutdown of pilot operated valve device first end is obtained, while controlling the second end port of the pressure reducing valve and the third end port of the pressure reducing valve
Connection, so that brake is in releasing orientation；
Making the proportional pressure-reducing valve by the control of the second electric signal drives the clutch to combine；
It includes: the first end port shutdown for controlling the proportional pressure-reducing valve, ratio decompression that current clutch, which unclamps mode,
The second end port of valve is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Meanwhile control the first end port of the pressure reducing valve be connected to the third end port of the pressure reducing valve, control described in
The first end port of pilot operated valve device is connected to the third end port of the pilot operated valve device, so that brake, which is in, clamps on-position.
Beneficial effect using above-mentioned further scheme is: by designing control strategy, control system is according to specific work
Operation mode generates corresponding control instruction, so that the corresponding valve of control system is worked accordingly, realizes expected work
Mode improves the automation of system.
It is further, described that the step of whether clutch and brake work normally is judged according to comparing result, comprising:
Under current start-up mode, brake pressure value and the first preset pressure that the second sensor is detected
Value compares, and the clutch pressure value that the first sensor detects is compared with the second preset pressure value；
When the brake pressure value is greater than first preset pressure value, and the clutch pressure value is less than described the
When two preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than or equal to first preset pressure value or the clutch pressure value
When more than or equal to second preset pressure value, controls the warning device and carry out alert operation；
Or,
Under current clutch binding pattern, the brake pressure value and third that the second sensor is detected are pre-
If pressure value compares, and the clutch pressure value that the first sensor is detected and the 4th preset pressure value to the 5th
The range of preset pressure value compares；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is located at described the
When in the range of four preset pressure values to the 5th preset pressure value, indicate that clutch and brake work normally；
When the brake pressure value is more than or equal to the third preset pressure value or the clutch pressure value
When except the range of the 4th preset pressure value to the 5th preset pressure value, controls the warning device and reported
Alert work；
Or,
Under current clutch release mode, the brake pressure value and the 6th that the second sensor is detected are pre-
If pressure value compares, and clutch pressure value that the first sensor detects and the 7th preset pressure value are carried out pair
Than；
When the brake pressure value is greater than the 6th preset pressure value, and the clutch pressure value is less than described the
When seven preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than or equal to the 6th preset pressure value or the clutch pressure value
When more than or equal to seven preset pressure value, controls the warning device and carry out alert operation.
Beneficial effect using above-mentioned further scheme is: under specific operating mode, pressure that sensor is detected
Power is compared with preset value corresponding in controller, judges whether clutch and brake work normally.When normal work
Keep normal control strategy, when non-normal working, controller controls warning device and carries out alert process, improves the safety of system
Reliability.
Further, under current clutch binding pattern, when the brake pressure value is default less than the third
Pressure value, and the clutch pressure value is located in the range of the 4th preset pressure value to the 5th preset pressure value
When, the proportional pressure-reducing valve is controlled by the first electric signal duration and runs the first preset time；
During controlling proportional pressure-reducing valve drive clutch combination by the second electric signal, at least execute
One of following steps:
When the pressure value of the brake is less than the third preset pressure value, the warning device is controlled to pilot operated valve device
Failure is alarmed；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is less than described the
When four preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is greater than described the
When five preset pressure values, controls the warning device comparative example pressure reducing valve failure and alarm；
When the brake pressure value is greater than the third preset pressure value, the warning device is controlled to pilot operated valve device event
Barrier is alarmed.
Beneficial effect using above-mentioned further scheme is: under clutch binding pattern, passing through the first electric signal duration
Controlling the proportional pressure-reducing valve drives pilot operated valve device to be moved, and to separate brake, controls clutch by the second electric signal duration
Device is combined, and the pressure in system is detected and analyzed in real time in the different stages, according to different analysis knots
Fruit judges that failure occurs in which specific component, and notifies the specific trouble unit of user and failure former by warning device
Cause improves the intelligence degree that system automatically controls.
Further, under clutch release mode, when the brake pressure value is less than or equal to the described 6th in advance
If when pressure value, controlling the warning device and alarming pilot operated valve device failure.
Beneficial effect using above-mentioned further scheme is: under clutch release mode, in real time to the pressure in system
It is detected and is analyzed, judge that failure occurs in which specific component according to different analysis results, and pass through warning device
It notifies the specific trouble unit of user and failure cause, improves the intelligence degree that system automatically controls.
In addition, the present invention also provides the monitoring systems of a kind of clutch and brake switch operating state comprising: it cuts
It changes the control device of clutch and brake operation mode, the first sensor for acquiring clutch pipeline pressure data, use
In acquisition brake piping pressure data second sensor and controller,
The first sensor and the second sensor are connect with the controller respectively；
The pressure data that the controller is used to will be close on the pipeline of clutch and brake compares；
Judge whether clutch and brake work normally according to comparing result.
The beneficial effects of the present invention are: by setting sensor, the operating status of real-time inspection and control system is found in time
Whether clutch and controller work normally, and during repairing to control system, are acquired by two sensors
Pipeline in pressure, user can easily know specifically wrong operation of motor or brake troubles, convenient for user to control
System processed is accurately repaired, and maintenance efficiency is improved.The safety and reliability of raising system.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the control device includes: pressure reducing valve, proportional pressure-reducing valve, pilot operated valve device,
The pressure reducing valve, the proportional pressure-reducing valve, the pilot operated valve device are connect with the controller respectively；
The second end port of the first end port of the proportional pressure-reducing valve and the first piping connection, the proportional pressure-reducing valve is logical
It crosses pipeline to connect with fuel tank, the third end port of the proportional pressure-reducing valve is connected by the input terminal of pipeline and the oil cylinder of clutch
It connecing, the first sensor is arranged on the pipeline between the proportional pressure-reducing valve and the oil cylinder of the clutch, and described first
Sensor is for the pressure in signal piping；
The first end port of the pressure reducing valve and the first piping connection, the second end port of the pressure reducing valve by pipeline with
The fuel tank connection, the third end port of the pressure reducing valve is connect by pipeline with the first end port of the pilot operated valve device, described
The second end port of pilot operated valve device is connect by pipeline with the fuel tank, and the third end port of the pilot operated valve device passes through pipeline and braking
The input terminal of the oil cylinder of device connects；The spool of the pilot operated valve device passes through the oil of pipeline and the proportional pressure-reducing valve and the clutch
Piping connection between cylinder pushes the spool fortune of pilot operated valve device for the pressure between proportion of utilization pressure reducing valve and clutch in pipeline
It is dynamic；The second sensor is arranged between the pilot operated valve device and the brake oil cylinder, and the second sensor is for detecting
Pressure in pipeline.
Beneficial effect using above-mentioned further scheme is: by the pressure of sensor real-time detection clutch and brake
Power state, controller are analyzed and are handled, and the safety and reliability of system are improved.
Further, further includes: warning device, the warning device are connect with the controller.
Beneficial effect using above-mentioned further scheme is: the setting of warning device, when clutch or brake are non-just
Often when work, alarm in time to user.
Further, it is connected between first sensor, second sensor, warning device and controller by CAN bus.
Beneficial effect using above-mentioned further scheme is: convenient for the signal transmission between electric component, improving detection knot
The accuracy of fruit.
Further, the first sensor and the second sensor are pressure sensor or flow sensor.
Beneficial effect using above-mentioned further scheme is: by the pressure in sensor detecting system, detection system
Whether working condition is normal, improves the safety and reliability of system.
The advantages of additional aspect of the invention, will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or practice is recognized through the invention.
Detailed description of the invention
Fig. 1 is the structure of the monitoring system of a kind of clutch provided in an embodiment of the present invention and brake switch operating state
Schematic diagram.
Fig. 2 is the circuit of the monitoring system of a kind of clutch provided in an embodiment of the present invention and brake switch operating state
Schematic illustration.
Fig. 3 is the signal of the monitoring method of a kind of clutch provided in an embodiment of the present invention and brake switch operating state
Property flow chart.
Drawing reference numeral explanation: 1- pressure reducing valve；2- proportional pressure-reducing valve；3- pilot operated valve device；4- brake；6- fuel tank；7- clutch；
8- first sensor；9- second sensor；The first pipeline of 10-.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in figure 3, Fig. 3 is a kind of monitoring of clutch and brake switch operating state provided in an embodiment of the present invention
The schematic flow chart of method.The present invention provides the monitoring methods of a kind of clutch and brake switch operating state, comprising:
It is acquired respectively close to pressure data on the pipeline of clutch and brake and is compared；
Judge whether clutch and brake work normally according to comparing result.
By designing the monitoring method of clutch and brake switch operating state, when realizing brake, clutch
Separation；When being maintained at main clutch combination again simultaneously, brake effectively is separated, improves the safety and reliability of system.
Further, it pressure data and compares on the pipeline acquired respectively close to the clutch and brake
Before step further include:
Current start-up mode includes: the first end port for controlling the pressure reducing valve and the third end port of the pressure reducing valve
The first end port for being connected to, controlling the pilot operated valve device is connected to the third end port of the pilot operated valve device, so that at the brake
In clamping on-position；
Under the start-up mode, at the same control the first end port shutdown of proportional pressure-reducing valve, proportional pressure-reducing valve second
End port is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Current clutch binding pattern includes: the first end port that the proportional pressure-reducing valve is controlled by the first electric signal
It is connected to the third end port of the proportional pressure-reducing valve, the spool of pilot operated valve device makes in the case where proportional pressure-reducing valve output oil pressure is pushed and moved
The port shutdown of pilot operated valve device first end is obtained, while controlling the second end port of the pilot operated valve device and the third end port of the pilot operated valve device
Connection, so that brake is in releasing orientation；
Making the proportional pressure-reducing valve by the control of the second electric signal drives the clutch to combine；
It includes: the first end port shutdown for controlling the proportional pressure-reducing valve, ratio decompression that current clutch, which unclamps mode,
The second end port of valve is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Meanwhile control the first end port of the pressure reducing valve be connected to the third end port of the pressure reducing valve, control described in
The first end port of pilot operated valve device is connected to the third end port of the pilot operated valve device, so that brake, which is in, clamps on-position.
By designing control strategy, control system generates corresponding control instruction according to specific operating mode, to control
The corresponding valve of system processed is worked accordingly, is realized expected operating mode, is improved the automation of system.
It is further, described that the step of whether clutch and brake work normally is judged according to comparing result, comprising:
Under current start-up mode, brake pressure value and the first preset pressure that the second sensor is detected
Value compares, and the clutch pressure value that the first sensor detects is compared with the second preset pressure value；
When the brake pressure value is greater than first preset pressure value, and the clutch pressure value is less than described the
When two preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than or equal to first preset pressure value or the clutch pressure value
When more than or equal to second preset pressure value, controls the warning device and carry out alert operation；
Or,
Under current clutch binding pattern, the brake pressure value and third that the second sensor is detected are pre-
If pressure value compares, and the clutch pressure value that the first sensor is detected and the 4th preset pressure value to the 5th
The range of preset pressure value compares；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is located at described the
When in the range of four preset pressure values to the 5th preset pressure value, indicate that clutch and brake work normally；
When the brake pressure value is more than or equal to the third preset pressure value or the clutch pressure value
When except the range of the 4th preset pressure value to the 5th preset pressure value, controls the warning device and reported
Alert work；
Or,
Under current clutch release mode, the brake pressure value and the 6th that the second sensor is detected are pre-
If pressure value compares, and clutch pressure value that the first sensor detects and the 7th preset pressure value are carried out pair
Than；
When the brake pressure value is greater than the 6th preset pressure value, and the clutch pressure value is less than described the
When seven preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than or equal to the 6th preset pressure value or the clutch pressure value
When more than or equal to seven preset pressure value, controls the warning device and carry out alert operation.
Under specific operating mode, pressure that sensor is detected and preset value corresponding in controller are carried out pair
Than judging whether clutch and brake work normally.Normal control strategy, non-normal working are kept when normal work
When, controller controls warning device and carries out alert process, improves the security reliability of system.
Further, under current clutch binding pattern, when the brake pressure value is default less than the third
Pressure value, and the clutch pressure value is located in the range of the 4th preset pressure value to the 5th preset pressure value
When, the proportional pressure-reducing valve is controlled by the first electric signal duration and runs the first preset time；
During controlling proportional pressure-reducing valve drive clutch combination by the second electric signal, at least execute
One of following steps:
When the pressure value of the brake is less than the third preset pressure value, the warning device is controlled to pilot operated valve device
Failure is alarmed；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is less than described the
When four preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is greater than described the
When five preset pressure values, controls the warning device comparative example pressure reducing valve failure and alarm；
When the brake pressure value is greater than the third preset pressure value, the warning device is controlled to pilot operated valve device event
Barrier is alarmed.
Under clutch binding pattern, the proportional pressure-reducing valve is controlled by the first electric signal duration, pilot operated valve device is driven to carry out
Movement controls clutch by the second electric signal duration and is combined, and in the different stages in real time to being to separate brake
Pressure in system is detected and is analyzed, and judges that failure occurs in which specific component according to different analysis results, and lead to
It crosses warning device and notifies the specific trouble unit of user and failure cause, improve the intelligence degree that system automatically controls.
Further, under clutch release mode,
When the brake pressure value is less than or equal to six preset pressure value, the warning device pair is controlled
Pilot operated valve device failure is alarmed.
Under clutch release mode, the pressure in system is detected and analyzed in real time, according to different analyses
As a result judge that failure occurs in which specific component, and notify the specific trouble unit of user and failure former by warning device
Cause improves the intelligence degree that system automatically controls.
As shown in Figure 1 to Figure 2, Fig. 1 is a kind of clutch provided in an embodiment of the present invention and brake switch operating state
Monitoring system structural schematic diagram.Fig. 2 is a kind of clutch provided in an embodiment of the present invention and brake switch operating state
Monitoring system circuit theory schematic diagram.
In addition, the present invention also provides the monitoring systems of a kind of clutch and brake switch operating state comprising: it cuts
It changes the control device of clutch and brake operation mode, the first sensor 8 for acquiring clutch pipeline pressure data, use
In acquisition brake piping pressure data second sensor 9 and controller,
The first sensor 8 and the second sensor 9 are connect with the controller respectively；
The pressure data that the controller is used to will be close on the pipeline of clutch 7 and brake 4 compares；
Judge whether clutch 7 and brake 4 work normally according to comparing result.
By designing the monitoring system of clutch and brake switch operating state, when realizing brake, clutch
Separation；When being maintained at main clutch combination again simultaneously, brake effectively is separated, improves the safety and reliability of system.
In addition, the present invention also provides a kind of clutch and brakes to switch Hydraulic system and control method, to existing hydraulic pressure system
System optimizes, when both having realized brake, clutch separation；When being maintained at main clutch combination again simultaneously, effectively make brake
Separation, while flexible control strategy being provided, have exclusive warning function, not only practical but also safe and reliable feature.
The present invention provides a kind of hydraulic control system, as shown in Figure 1, including pressure reducing valve, proportional pressure-reducing valve, pilot operated valve device, pressure
Force snesor and corresponding auxiliary element (sebific duct, connector etc.).
Below with reference to Fig. 1, the present invention is described in further detail.
Operating condition one: system starting after, proportional pressure-reducing valve power loss, be in original state, P mouthfuls of pressure oils through pressure reducing valve 1. →
3. then through pilot operated valve device valve 1. → 3. enter brake cylinder cavity, brake is in clamped condition.At the same time, electric ratio decompression
Valve not it is electric, then the valve 1. mouth close, 2., 3. mouth mutually leads to fuel tank, and clutch is in discrete state.Hydrostatic sensor P2 is (i.e.
Second sensor) brake pressure signal is collected, (i.e. the first preset pressure value subtracts than system setting with controller given threshold 1
Pressure valve pressure is slightly smaller, avoids judging by accident) it compares, control judgement is carried out, whether pressure meets.Pressure sensor P1 (the i.e. first sensing
Device) it collects pressure and whether is less than given threshold 2 (i.e. the second preset pressure value, general setting point more slightly larger than zero, prevents because of oil return
Judged by accident caused by back pressure reason), if main clutch separates.
Operating condition two: operating main clutch and combine control, then electric proportional pressure-reducing valve needs electric, according to program setting, first applies
Lesser electric signal so that electric proportional pressure-reducing valve 1. → 3. (represent port) and pass to lesser pressure oil, until meeting the pressure
Reach the spool for pushing pilot operated valve device, so that pilot operated valve device 1. close by mouth, 2., 3. mouth mutually leads to fuel tank, cavity off-load is braked, in pine
It opens.Persistently increase electric signal again, combine winner's clutch slowly, continuation is controlled with ramp signal, so that after electric proportional pressure-reducing valve
Pressure rise, until main clutch is completely combined, and most Zhongdao setup pressure value, it realizes and transmits enough torques.
Hydrostatic sensor P2 collects brake pressure signal, with controller given threshold 3 (i.e. third preset pressure value, one
As more slightly larger than zero point of setting, erroneous judgement caused by preventing because of return oil pressure reason) compare, while pressure sensor P1 collects pressure
Whether in given threshold 4 (i.e. the 4th preset pressure value, hydraulic control valve core fully open pressure) and (the i.e. the 5th default pressure of threshold value 5
Force value, clutch can transmit the critical pressure of torque) between.There are following several situations:
(1) if meeting setting demand, then in this state, continuous service several seconds, guarantee that system reaches main clutch and combines
And the switching that braking is kept completely separate, it then carries out controlling electric proportional pressure-reducing valve with ramp signal, is finally reached winner's clutch and sets
Fixed torque delivery request.
(2) if P2 signal is not less than threshold value 3, while pressure sensor P1 collects pressure in 4 (pilot operated valve device of given threshold
Spool fully opens pressure) and threshold value 5 (critical pressure that main clutch can transmit torque) between, then keep at electric proportional pressure-reducing valve
In the constant current state, the duration can set a certain threshold value (can adjust according to practical, out of the ordinary to set 30s), if should
After state, P2 value be less than threshold value 3, then illustrate that the spring force of pilot operated valve device is larger, spool fail movement in place, or may be because
There are certain clamping stagnation, spool movement is insensitive, thens make an alarm reminder.
(3) if P2 signal is less than threshold value 3, while pressure sensor P1 collects pressure less than 4 (pilot operated valve device of given threshold
Spool fully opens pressure), then illustrate that current pilot operated valve device valve core spring is smaller, does not influence to use.
(4) if P2 signal is less than threshold value 3, while pressure sensor P1 collects pressure greater than (the main clutch of given threshold 5
Torque can be transmitted closes on pressure) then illustrating electric proportional pressure-reducing valve, there may be certain failures, and even there are a certain for program
BUG.Warning reminding.
(5) if P2 signal is less than threshold value 3, while whether pressure sensor P1 collects pressure in 4 (hydraulic control of given threshold
Valve core fully opens pressure) and threshold value 5 (critical pressure that clutch can transmit torque) between, then keep at electric proportional pressure-reducing valve
In the constant current state, the duration can set a certain threshold value (can adjust according to practical, out of the ordinary to set 30s), if should
After state, P2 value is still greater than threshold value 3, then may be because the spring force of the complete clamping stagnation of spool or pilot operated valve device is too big, spool without
Method movement.Then warning reminding.
Only after satisfaction (1), the signal of system electric proportional valve just allows to increase to according to program setting with ramp signal
Maximum value.
Operating condition three: operating main clutch and unclamp control, at this point, proportional pressure-reducing valve power loss, sets in program and is mutated with step, fastly
Fast off-load.At this time in main clutch cavity pressure rapid decrease, the movement of hydraulic control valve core has certain delay, and main clutching pressure is basic
After complete off-load, the oil liquid flow direction of pressure oil and operating condition one is consistent, at the same time, clutch pressure through proportional pressure-reducing valve 3. → 2.
Outspoken speed oil return box, main clutch separation, and pressure from pressure reducing valve to pilot operated valve device 1. → 3., the braking of Braking system chuck clamping.
Hydrostatic sensor P2 collects brake pressure signal, if be greater than with controller given threshold 6 (than after pressure reducing valve most
Big pressure is slightly smaller), at the same pressure sensor P1 collect pressure whether be less than given threshold 7 (general setting point slightly larger than zero, it is anti-
Only because being judged by accident caused by return oil pressure reason).There are following several situations:
(1) if meeting setting demand, then illustrate system operational excellence.
(2) if P2 signal is not more than threshold value 6 (i.e. the 6th preset pressure value, more slightly smaller than maximum pressure after pressure reducing valve), then
Illustrate pilot operated valve device clamping stagnation, braking can not be released, be then make an alarm reminder.
Beneficial effects of the present invention are mainly manifested in: 1, realizing the best match that main clutch is combined, separates and braked；2, it is
It unites safe and reliable.3, the present invention discloses the best match device of a kind of main clutch separation, combination and braking, it may be implemented slowly
In conjunction with, fastly separate movement switching.4, disclosed by the invention hydraulic and control strategy passes through signal acquisition, analysis and processing function
Can, so that hydraulic system is in good operating status, avoid the over-heated fault being likely to occur, acts safer, reliable.
Further, the control device includes: pressure reducing valve 1, proportional pressure-reducing valve 2, pilot operated valve device 3, the pressure reducing valve 1, institute
State proportional pressure-reducing valve 2, the pilot operated valve device 3 is connect with the controller respectively；
The first end port of the proportional pressure-reducing valve 2 is connect with the first pipeline 10, the second end end of the proportional pressure-reducing valve 2
It mouthful is connect with fuel tank 6 by pipeline, the third end port of the proportional pressure-reducing valve 2 passes through the defeated of pipeline and the oil cylinder of clutch 7
Entering end connection, the first sensor 8 is arranged on the pipeline between the proportional pressure-reducing valve 2 and the oil cylinder of the clutch 7,
The first sensor 8 is for the pressure in signal piping；
The first end port of the pressure reducing valve 1 is connect with the first pipeline 10, and the second end port of the pressure reducing valve 1 passes through pipe
Road is connect with the fuel tank 6, and the third end port of the pressure reducing valve 1 is connected by the first end port of pipeline and the pilot operated valve device 3
It connects, the second end port of the pilot operated valve device 3 is connect by pipeline with the fuel tank 6, and the third end port of the pilot operated valve device 3 passes through
Pipeline is connect with the input terminal of the oil cylinder of brake 4；The spool of the pilot operated valve device 3 by pipeline and the proportional pressure-reducing valve 2 and
Piping connection between the oil cylinder of the clutch 7, for the pressure between proportion of utilization pressure reducing valve 2 and clutch 7 in pipeline
Push the valve core movement of pilot operated valve device 3；The second sensor 9 is arranged between 4 oil cylinder of the pilot operated valve device 3 and the brake,
The second sensor 9 is for the pressure in signal piping.
Wherein, the first pipeline 10 is the pipeline being arranged between hydraulic oil pump and pressure reducing valve 1, for will be hydraulic in oil pump
Oil pressure enters in pressure reducing valve 1.
Wherein, proportional pressure-reducing valve 2 is electric proportional pressure-reducing valve.
By sensor real-time detection clutch and the pressure state of brake, controller is analyzed and is handled,
The safety and reliability of raising system.
The controller controls pressure reducing valve, proportional pressure-reducing valve and hydraulic control by electric signal according to the operating mode that user inputs
Valve works；
The pressure data of the respective locating pipeline of the first sensor and second sensor acquisition, and by the pressure
Force data is sent to the controller；
The pressure data that the controller is used to will be close on the pipeline of clutch and brake compares；
Judge whether clutch and brake work normally according to comparing result.
The controller controls pressure reducing valve, proportional pressure-reducing valve and hydraulic control by electric signal according to the operating mode that user inputs
The step of valve is worked include:
Under system start-up mode, controller controls the first end port of the pressure reducing valve and the third end of the pressure reducing valve
Port connection controls the first end port of the pilot operated valve device and is connected to the third end port of the pilot operated valve device, so that at brake
In clamping on-position；
The first end port shutdown of the proportional pressure-reducing valve of controller control simultaneously, the second end port of proportional pressure-reducing valve and ratio
The third end port of pressure reducing valve is connected to, so that clutch is in discrete state；
Under clutch binding pattern, controller controls the first end port of the proportional pressure-reducing valve by the first electric signal
It is connected to the third end port of the proportional pressure-reducing valve, the spool of pilot operated valve device makes in the case where proportional pressure-reducing valve output oil pressure is pushed and moved
The port shutdown of pilot operated valve device first end is obtained, while controlling the second end port of the pressure reducing valve and the third end port of the pressure reducing valve
Connection, so that brake is in releasing orientation；
Controller makes the proportional pressure-reducing valve by the control of the second electric signal and the clutch is driven to combine；
Under clutch release mode, controller controls the first end port shutdown of the proportional pressure-reducing valve, ratio decompression
The second end port of valve is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Meanwhile controller controls the first end port of the pressure reducing valve and is connected to, controls with the third end port of the pressure reducing valve
The first end port for making the pilot operated valve device is connected to the third end port of the pilot operated valve device, so that brake, which is in, clamps braking shape
State.
The data that the controller acquires first pressure sensor and second pressure sensor compare respectively, to sentence
The step of whether oil cylinder and brake oil cylinder of dialysis clutch work normally include:
Under system start-up mode, in the brake pressure value and controller that controller detects the second sensor
First preset pressure value of storage compares, and the clutch pressure value and control that controller detects the first sensor
The second preset pressure value stored in device processed compares；
When the brake pressure value is greater than first preset pressure value, and the clutch pressure value is less than described the
When two preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than or equal to first preset pressure value or the clutch pressure value
When more than or equal to second preset pressure value, controller controls the warning device and carries out alert operation；
Under clutch binding pattern, brake pressure value and controller that controller detects the second sensor
The third preset pressure value of middle storage compares, and the controller clutch pressure value that detects the first sensor with
The range of the 4th preset pressure value to the 5th preset pressure value stored in controller compares；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is located at described the
When in the range of four preset pressure values to the 5th preset pressure value, indicate that clutch and brake work normally；
When the brake pressure value is more than or equal to the third preset pressure value or the clutch pressure value
When except the range of the 4th preset pressure value to the 5th preset pressure value, controller controls the warning device
Carry out alert operation；
Under clutch release mode, brake pressure value and controller that controller detects the second sensor
6th preset pressure value of middle storage compares, and the controller clutch pressure value that detects the first sensor with
The 7th preset pressure value stored in controller compares；
When the brake pressure value is greater than the 6th preset pressure value, and the clutch pressure value is less than described the
When seven preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than or equal to the 6th preset pressure value or the clutch pressure value
When more than or equal to seven preset pressure value, controller controls the warning device and carries out alert operation.
Under clutch binding pattern, when the brake pressure value be less than the third preset pressure value, and it is described from
When clutch pressure value is located in the range of the 4th preset pressure value to the 5th preset pressure value, controller passes through first
Electric signal duration controls the proportional pressure-reducing valve and runs the first preset time；
During controller controls the proportional pressure-reducing valve by the second electric signal and the clutch is driven to combine:
When the pressure value of the brake is less than the third preset pressure value, controller controls the warning device pair
Pilot operated valve device failure is alarmed；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is less than described the
When four preset pressure values, indicate that clutch and brake work normally；
When the brake pressure value is less than the third preset pressure value, and the clutch pressure value is greater than described the
When five preset pressure values, controller controls the warning device comparative example pressure reducing valve failure and alarms；
When the brake pressure value is greater than the third preset pressure value, controller controls the warning device to liquid
Control valve failure is alarmed.
Under clutch release mode,
When the brake pressure value is less than or equal to six preset pressure value, controller controls the alarm
Equipment alarms to pilot operated valve device failure.
Further, further includes: warning device, the warning device are connect with the controller.
The setting of warning device is alarmed to user in time when clutch or brake non-normal working.
Further, further includes: the first sensor 8 and the second sensor 9 are pressure sensor or stream
Quantity sensor.
By the pressure in sensor detecting system, whether the working condition of detection system is normal, improves the safety of system
Property and reliability.
Further, pass through CAN bus between first sensor 8, second sensor 9, warning device and controller
Communication connection.
Convenient for the signal transmission between electric component, the accuracy of testing result is improved.
As shown in Fig. 2, core of the invention be to provide it is a kind of have high reliability clutch and brake switching hydraulic system and
Control.Pressure sensor 1,3 signal of pressure sensor are analyzed and processed, then export control plan by CAN communication by controller
Slightly, accordingly controlled or exported corresponding alarm signal.
Optional alternative solution as above-mentioned technical proposal: alternative solution one: shown pressure sensor includes to be not limited to energy
Convert the pressure sensor of current signal or voltage signal.Alternative solution two: shown alarm includes being not limited to sound, light and screen
The warning message of prompt.Alternative solution three: description of the invention is given for the purpose of illustration and description, and is not nothing
It is omitting or limit the invention to disclosed form.Many modifications and variations are for the ordinary skill in the art
It is obvious.Selection and description embodiment are and to make this field to more preferably illustrate the principle of the present invention and practical application
Those of ordinary skill it will be appreciated that the present invention to designing various embodiments suitable for specific applications with various modifications.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. the monitoring method of a kind of clutch and brake switch operating state characterized by comprising respectively acquisition close to from
It pressure data and is compared on the pipeline of clutch and brake；
Judge whether clutch and brake work normally according to comparing result.
2. the monitoring method of a kind of clutch according to claim 1 and brake switch operating state, which is characterized in that
Before described the step of being acquired respectively close to pressure data on the pipeline of the clutch and brake and being compared further include:
Current start-up mode includes: that the first end port of control pressure reducing valve is connected to the third end port of pressure reducing valve, controls liquid
The first end port of control valve is connected to the third end port of pilot operated valve device, so that the brake, which is in, clamps on-position；
Under the start-up mode, while controlling the second end end of the first end port shutdown of proportional pressure-reducing valve, proportional pressure-reducing valve
Mouth is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Current clutch binding pattern includes: first end port and the institute that the proportional pressure-reducing valve is controlled by the first electric signal
The third end port connection of proportional pressure-reducing valve is stated, the spool of pilot operated valve device is in the case where proportional pressure-reducing valve output oil pressure is pushed and moved, so that liquid
The port shutdown of valve first end is controlled, while controlling the second end port of the pressure reducing valve valve and the third end port of the pressure reducing valve and connecting
It is logical, so that brake is in releasing orientation；
Making the proportional pressure-reducing valve by the control of the second electric signal drives the clutch to combine；
It includes: the first end port shutdown for controlling the proportional pressure-reducing valve, proportional pressure-reducing valve that current clutch, which unclamps mode,
Second end port is connected to the third end port of proportional pressure-reducing valve, so that clutch is in discrete state；
Meanwhile it controlling the first end port of the pressure reducing valve and being connected to the third end port of the pressure reducing valve, control the hydraulic control
The first end port of valve is connected to the third end port of the pilot operated valve device, so that brake, which is in, clamps on-position.
3. the monitoring method of a kind of clutch according to claim 2 and brake switch operating state, which is characterized in that
It is described that the step of whether clutch and brake work normally is judged according to comparing result, comprising:
Under current start-up mode, brake pressure value that the second sensor is detected and the first preset pressure value into
Row comparison, and the clutch pressure value that the first sensor detects is compared with the second preset pressure value；
When the brake pressure value is greater than first preset pressure value, and to be less than described second pre- for the clutch pressure value
If when pressure value, indicating that clutch and brake work normally；
When the brake pressure value is greater than less than or equal to first preset pressure value or the clutch pressure value
Or when being equal to second preset pressure value, controls the warning device and carry out alert operation；
Or,
Under current clutch binding pattern, the default pressure of the brake pressure value and third that the second sensor is detected
Force value compares, and the clutch pressure value that the first sensor detects is preset with the 4th preset pressure value to the 5th
The range of pressure value compares；
When the brake pressure value is less than the third preset pressure value, and to be located at the described 4th pre- for the clutch pressure value
If when in the range of pressure value to the 5th preset pressure value, indicating that clutch and brake work normally；
When the brake pressure value is located at more than or equal to the third preset pressure value or the clutch pressure value
When except the 4th preset pressure value to the range of the 5th preset pressure value, controls the warning device and carry out alarm work
Make；
Or,
Under current clutch release mode, brake pressure value and the 6th default pressure that the second sensor is detected
Force value compares, and the clutch pressure value and the progress of the 7th preset pressure value that controller detects the first sensor
Comparison；
When the brake pressure value is greater than the 6th preset pressure value, and to be less than the described 7th pre- for the clutch pressure value
If when pressure value, indicating that clutch and brake work normally；
When the brake pressure value is greater than less than or equal to the 6th preset pressure value or the clutch pressure value
Or when being equal to seven preset pressure value, controls the warning device and carry out alert operation.
4. the monitoring method of a kind of clutch according to claim 3 and brake switch operating state, which is characterized in that
It is and described when the brake pressure value is less than the third preset pressure value under current clutch binding pattern
When clutch pressure value is located in the range of the 4th preset pressure value to the 5th preset pressure value, pass through the first telecommunications
It number persistently controls the proportional pressure-reducing valve and runs the first preset time；
During controlling proportional pressure-reducing valve drive clutch combination by the second electric signal, at least execute following
One of step:
When the pressure value of the brake is less than the third preset pressure value, the warning device is controlled to pilot operated valve device failure
It alarms；
When the brake pressure value is less than the third preset pressure value, and to be less than the described 4th pre- for the clutch pressure value
If when pressure value, indicating that clutch and brake work normally；
When the brake pressure value is less than the third preset pressure value, and to be greater than the described 5th pre- for the clutch pressure value
If when pressure value, controlling the warning device comparative example pressure reducing valve failure and alarming；
When the brake pressure value be greater than the third preset pressure value when, control the warning device to pilot operated valve device failure into
Row alarm.
5. the monitoring method of a kind of clutch according to claim 4 and brake switch operating state, which is characterized in that
Under clutch release mode, when the brake pressure value is less than or equal to six preset pressure value, institute is controlled
Warning device is stated to alarm to pilot operated valve device failure.
6. the monitoring system of a kind of clutch and brake switch operating state characterized by comprising switch clutch and system
The control device of dynamic device operating mode, the first sensor for acquiring clutch pipeline pressure data, for acquiring brake
The second sensor and controller of loine pressure data,
The first sensor and the second sensor are connect with the controller respectively；
The pressure data that the controller is used to will be close on the pipeline of clutch and brake compares；
Judge whether clutch and brake work normally according to comparing result.
7. the monitoring system of a kind of clutch according to claim 6 and brake switch operating state, which is characterized in that
The control device includes: pressure reducing valve, proportional pressure-reducing valve, pilot operated valve device,
The pressure reducing valve, the proportional pressure-reducing valve, the pilot operated valve device are connect with the controller respectively；
The first end port of the proportional pressure-reducing valve and the first piping connection, the second end port of the proportional pressure-reducing valve passes through pipe
Road is connect with fuel tank, and the third end port of the proportional pressure-reducing valve is connected by the input terminal of pipeline and the oil cylinder of clutch, institute
It states on the pipeline that first sensor is arranged between the proportional pressure-reducing valve and the oil cylinder of the clutch, the first sensor
For the pressure in signal piping；
The first end port of the pressure reducing valve and the first piping connection, the second end port of the pressure reducing valve by pipeline with it is described
The third end port of fuel tank connection, the pressure reducing valve is connect by pipeline with the first end port of the pilot operated valve device, the hydraulic control
The second end port of valve is connect by pipeline with the fuel tank, and the third end port of the pilot operated valve device passes through pipeline and brake
The input terminal of oil cylinder connects；The spool of the pilot operated valve device by the oil cylinder of pipeline and the proportional pressure-reducing valve and the clutch it
Between piping connection, between proportion of utilization pressure reducing valve and clutch in pipeline pressure push pilot operated valve device valve core movement；
The second sensor is arranged between the pilot operated valve device and the brake oil cylinder, and the second sensor is used for signal piping
In pressure.
8. the monitoring system of a kind of clutch according to claim 7 and brake switch operating state, which is characterized in that
Further include: warning device, the warning device are connect with the controller.
9. the monitoring system of a kind of clutch according to claim 6 and brake switch operating state, which is characterized in that
It is connected between first sensor, second sensor, warning device and controller by CAN bus.
10. special according to the monitoring system of claim the 6-9 any a kind of clutch and brake switch operating state
Sign is that the first sensor and the second sensor are pressure sensor or flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646882.1A CN110219916B (en) | 2019-07-17 | 2019-07-17 | Monitoring method and system for switching working states of clutch and brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646882.1A CN110219916B (en) | 2019-07-17 | 2019-07-17 | Monitoring method and system for switching working states of clutch and brake |
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| Publication Number | Publication Date |
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| CN110219916A true CN110219916A (en) | 2019-09-10 |
| CN110219916B CN110219916B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910646882.1A Active CN110219916B (en) | 2019-07-17 | 2019-07-17 | Monitoring method and system for switching working states of clutch and brake |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111550512A (en) * | 2020-05-12 | 2020-08-18 | 深圳市科敏传感器有限公司 | Train brake cylinder pressure monitoring and collecting system |
| CN112377545A (en) * | 2020-11-26 | 2021-02-19 | 东风井关农业机械有限公司 | Fault diagnosis method for vehicle wet-type multi-plate clutch system |
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| CN2173733Y (en) * | 1993-07-22 | 1994-08-10 | 中国矿业大学 | Disk brake status monitor |
| JPH0986401A (en) * | 1995-09-27 | 1997-03-31 | Akebono Brake Ind Co Ltd | Brake clearance detector |
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|---|---|
| CN110219916B (en) | 2024-02-06 |
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