CN202273261U - Independent heat dissipation control system of novel hydraulic excavator - Google Patents
Independent heat dissipation control system of novel hydraulic excavator Download PDFInfo
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- CN202273261U CN202273261U CN 201120367578 CN201120367578U CN202273261U CN 202273261 U CN202273261 U CN 202273261U CN 201120367578 CN201120367578 CN 201120367578 CN 201120367578 U CN201120367578 U CN 201120367578U CN 202273261 U CN202273261 U CN 202273261U
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Abstract
The utility model discloses an independent heat dissipation control system of a novel hydraulic excavator, belonging to the technical field of heat dissipation control of the excavator. The independent heat dissipation control system comprises a main controller, a monitor, an engine, an ECM (Engine Control Module), a hydraulic oil temperature sensor, a first fan motor, a second fan motor, a firs radiator and a second radiator; the independent heat dissipation control system also comprises a fan pump, a reverse signal triggering switch, an electromagnetic directional valve and an inverse proportional electromagnetic valve; the monitor, the hydraulic oil temperature sensor and the reverse signal triggering switch are respectively and electrically connected with the main controller; the main controller is electrically connected with the engine through the ECM; the engine is electrically connected with the fan pump which is respectively connected with the first fan motor and the second fan motor; and the first fan motor and the second fan motor respectively correspond to the first radiator and the second radiator which are connected in parallel. The independent heat dissipation control system has the beneficial effects that the efficiency of the heat dissipation system is improved, the noise of the system is reduced, simultaneously the energy saving performance of the system is effectively realized and the stability of the system is improved when a fan inversely operates.
Description
Technical field
The utility model relates to a kind of excavator cooling control system, relates in particular to a kind of novel hydraulic excavator independence cooling control system, belongs to hydraulic crawler excavator radiating control technical field.
Background technology
At present, radiator is the core of hydraulic crawler excavator engine-cooling system, and the hot and cold medium radiator of flowing through is in some way realized exchange heat, reaches the requirement that reduces hot side liquid temperature.If cooling system can not operate as normal, it is many unfavorable to cause hydraulic system and dynamical system.Therefore, how to develop energy-efficient cooling control system and become the emphasis that each producer falls over each other to research and develop.
Traditional hydraulic crawler excavator cooling system is mainly motor and directly disperses hot system; As shown in Figure 4; Motor (11) directly connects fan (12), and the fan outside is equipped with radiator (13), and the design of two cooling systems of assembling is also arranged; But mainly have following shortcoming: 1, the rotating speed of fan directly depends on the rotating speed of motor, and can not surpass the rotating speed of (maybe can not be lower than) motor; 2, the power of fan changes along with the rotating speed of motor; 3, the installation site of fan is restricted; 4, when the operation of the high rotating speed of motor, the noise of fan is big and can not effective energy-saving; 5, fan can not be realized " counter-rotating ".Though motor directly disperses hot system can be through improving heat spreader structures; Optimize the methods such as coupling of cooling system; Improve the radiating efficiency of cooling system to a certain extent, only depend on the rotating speed of motor but motor directly drives the rotating speed of radiator fan, and can not be according to the radiating requirements flexible transformation of cooling system; So traditional cooling system can't provide suitable solution to different radiating requirements under the same rotating speed, is further improved.
Summary of the invention
To above-mentioned existing technical problem; The utility model provides a kind of novel hydraulic excavator independence cooling control system; Use independently hydraulic fan pump control fan motor and then control radiator heat-dissipation power; Improve the efficient of cooling system, reduced the noise of system, effectively realized the energy saving of system simultaneously.
The utility model is for realizing above-mentioned purpose; Realize through following technical scheme: a kind of novel hydraulic excavator independence cooling control system; Comprise master controller, watch-dog, motor, ECM, hydraulic fluid temperature sensor, first fan motor, second fan motor, first radiator and second radiator, also comprise fan pump, reverse signal trigger switch, solenoid operated directional valve and inverse proportion electromagnetic proportional valve; Monitor, hydraulic fluid temperature sensor and reverse signal trigger switch are electrically connected master controller respectively, and master controller is electrically connected motor through ECM, and motor is electrically connected fan pump, and fan pump connects first fan motor and second fan motor respectively; Master controller is electrically connected fan pump through the inverse proportion electromagnetic proportional valve, and master controller is electrically connected first fan motor and second fan motor through solenoid operated directional valve; First fan motor and second fan motor be corresponding first radiator and second radiator respectively, and first radiator and the parallel connection of second radiator.
Further, the hydraulic fluid temperature sensor is installed near the inlet port of hydraulic oil container bottom.
Further, the hydraulic fluid temperature sensor is the voltage-type temperature pick up.
Further, fan pump is the automatically controlled Variable plunger pump of inverse proportion.
Further, the reverse signal trigger switch is for being with the rocker switch that resets.
Further, first radiator is the engine water radiator, and second radiator is a hydraulic oil radiator.
Further, be connected for the CAN bus between master controller and the ECM.
Further, be connected for the CAN bus between master controller and the watch-dog.
The operating principle of the utility model: at first, confirm how system realizes the function of dispelling the heat, can clear and definite system will carry out radiating control as requested, and the object of each radiator control is different to two individual heat sinks.Cooling system is composed in parallel by two radiators, an engine water radiator, and a hydraulic oil radiator is selected cooling water temperature respectively, and the intake air temperature after the charge air cooler and the temperature of hydraulic oil are controlled device.After the temperature signal that master controller is passed motor ECM and hydraulic fluid temperature sensor is judged; Principle according to " water temperature has precedence over the oil temperature; oily temperature has precedence over intake air temperature "; And regulate the rotating speed of fan pump delivery and motor, and then change the heat radiation power of cooling system according to predefined program.Control the rotating speed of fan motor according to different radiating requirements, weaken engine speed change, make the fan stability of rotation, effectively solved the high rotating speed of motor and the problem of power interference under the low condition of radiating requirements power the influence that rotation speed of the fan receives.Through reducing the rotating speed that the fan pump delivery reduces fan motor, both reduced power attenuation, weakened the noise that radiator brings again; When the slow-speed of revolution and radiating requirements power ratio are bigger, through improving the fan pump delivery, under the prerequisite that does not change engine speed, realize improving the heat radiation power of cooling system, and satisfy the radiating requirements of this moment.
Secondly, how reverse function is realized inquiring into, reverse function should have processing safety, because counter-rotating suddenly can increase hydraulic fan motor axial moment, reduces the application life of hydraulic motor.Consider the reliability of system, through the judgement of control to engine condition, the fan counter-rotating situation in the time of can avoiding the high engine speeds running, the application life of having improved motor.
The beneficial effect of the utility model is: the signal through to engine water temperature, intake air temperature and hydraulic fluid temperature is handled; Come the dynamic adjusting system heat radiation power; Noise is little, energy saving is high; Improve the maintainability of system, strengthened radiating effect, guaranteed motor operate as normal under suitable temperature.Simultaneously, possess the counter-rotating dedusting function of hommization, carry out reverse function through human-computer interaction interface and confirm; And master controller is through the judgement to machine state; Can carry out self-locking to the counter-rotating under the abnormal conditions, forbid engine inversion under abnormal conditions, simple to operate; Safe, and ergonomic.
Description of drawings
Fig. 1 is the electric principle schematic of the utility model;
Fig. 2 is the flow chart of the utility model independence radiating control function;
Fig. 3 is the flow chart of the utility model fan counter-rotating control function;
Fig. 4 directly disperses the structural representation of hot system for the motor of prior art.
Among the figure: 1, hydraulic fluid temperature sensor, 2, the reverse signal trigger switch, 3, solenoid operated directional valve, 5, hydraulic oil container, 6, fan pump, 7, the inverse proportion electromagnetic proportional valve, 11, motor, 12, fan, 13, radiator.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1; The utility model comprises master controller, watch-dog, motor, ECM, hydraulic fluid temperature sensor 1, first fan motor, second fan motor, first radiator and second radiator; It is characterized in that, also comprise fan pump 6, reverse signal trigger switch 2, solenoid operated directional valve 3 and inverse proportion electromagnetic proportional valve 7; Monitor, hydraulic fluid temperature sensor 1 and reverse signal trigger switch 2 are electrically connected master controller respectively, and master controller is electrically connected motor through ECM, and motor is electrically connected fan pump 6, and fan pump 6 connects first fan motor and second fan motor respectively; Master controller is electrically connected fan pump 6 through inverse proportion electromagnetic proportional valve 7, and master controller is electrically connected first fan motor and second fan motor through solenoid operated directional valve 3; First fan motor and second fan motor be corresponding first radiator and second radiator respectively, and first radiator and the parallel connection of second radiator.
Wherein, hydraulic fluid temperature sensor 1 is installed near the hydraulic oil container 5 bottom inlet ports.Hydraulic fluid temperature sensor 1 is the voltage-type temperature pick up.Fan pump 6 is the automatically controlled Variable plunger pump of inverse proportion.The rocker switch that reverse signal trigger switch 2 resets for band.First radiator is the engine water radiator, and second radiator is a hydraulic oil radiator.Be connected for the CAN bus between master controller and the ECM.Be connected for the CAN bus between master controller and the watch-dog.
Above-mentioned independent cooling control system is mainly realized two big functions, promptly independent radiating control function and counter-rotating dedusting function, and during enforcement, each control device and process comprise following content.
One, independent radiating control function.
Cooling system is composed in parallel by two radiators, and one is the engine water radiator, and another is a hydraulic oil radiator.The engine water radiator is chosen intake air temperature after temperature and the charge air cooler of engine cooling water as controlled device; The temperature that hydraulic oil radiator is chosen hydraulic oil is a controlled device.Consider cost, do not select the high amperometric sensor of precision, the voltage-type temperature pick up is higher and antijamming capability is better than resistor-type temperature pick up precision, and the voltage-type temperature pick up of selection can fully satisfy the requirement of system to the collecting temperature accuracy.Consider the reliability of system, selecting between proportioning valve electric current and the pump delivery of fan pump 6 be the automatically controlled Variable plunger pump of inverse proportion of inversely prroportional relationship, the situation that can avoid the heat radiation power of system under the situation of master controller inefficacy to satisfy like this.
As shown in Figure 2; At first; Master controller reads the water temperature signal of motor on the ECM on the CAN bus; Master controller reads the intake manifold temperature signal of motor on the ECM on the CAN bus, master controller is through being installed in the temperature signal that near hydraulic oil container 5 inlet ports voltage-type temperature pick up directly reads hydraulic oil this moment.Then; Master controller compares the temperature signal of gathering through the temperature of processing with actual set; According to the principle of " water temperature has precedence over the oil temperature, the preferential and intake air temperature of oil temperature ", the drive current of adjustment PWM electric current delivery outlet comes the proportioning valve output of dynamic adjustment fan pump 6; And then regulate the power of cooling system through the discharge capacity of control fan pump 6, controlled temperature object is distributed within the predefined control temperature range.
Three above-mentioned temperature signals are being represented three different systems, and all there is a suitable operating temperature range in each system, use software that operating temperature range is set.System adopts the thinking of segmentation control, is divided into three sections t1, t2, t3 to temperature control, t1＞t2＞t3 wherein, and t1 adopts with the t3 section and decide power control, and the t2 section adopts change power to control.Become the stability of power control stage for fear of frequent adjustment, assurance system; Abandoned the PID dynamic adjustments; And selected segmentation scales control, according to the temperature that becomes the power section, select the plurality of temperature point; And the temperature spot control data analyzed, sum up divide the control ratio of temperature section.Adopt comparatively simple proportional control to becoming the power control section, the experiment proof can be accomplished the heat sinking function of system so preferably, and programming is comparatively simple.
When the temperature of controlled device during less than t1, the electric current of fan pump 6 is a maximum value, and this moment, the discharge capacity of fan pump 6 was minimum, and the flow of the fan motor of under the situation of same rotating speed, flowing through is minimum, and the heat radiation power of system is minimum; When the temperature of controlled device during greater than t3, the electric current of fan pump 6 is a minimum value, and this moment, the fan pump delivery was maximum, and the flow of the fan motor of under the situation of same rotating speed, flowing through is maximum, and the heat radiation power of system is maximum; When temperature is t2, taked the control of change power proportions, scale parameter is adjustable, confirms scale parameter according to the parameter of debugging, and the heat radiation power of this moment matees different scale parameters according to the temperature value of controlled device.
Two, counter-rotating dedusting control function.
The rocker switch that select tape resets is as reverse signal trigger switch 2, and when master controller detected switch and is the triggering state, master controller was judged the current running status of motor, and the counter-rotating request is judged.If motor turns round, then master controller carries out self-locking, forbids that cooling control system reverses; If motor is running not, master controller will be supported the request of counter-rotating.
Concrete control flow is as shown in Figure 3, through certain programming, makes watch-dog that master controller is graphically shown through the information that the CAN bus passes over, and ejects dialog box on the watch-dog then.When motor in the running, the dialog box prompting this moment can't be reversed; When the motor off-duty, the dialog box prompting can be reversed.Operating personnel can through select counter-rotating or just the commentaries on classics state submit the instruction of whether reversing to.After affirmation finished, the dialog box that ejects on the watch-dog disappeared, and got into the current page state.
Receive the information of counter-rotating affirmation when master controller after, the reversal valve of master controller drives a mouthful output high level, and the solenoid operated directional valve 3 that control is installed on the reversal valve commutates.If during solenoid operated directional valve 3 faults, master controller can also pass to watch-dog with fault message, make watch-dog carry out fault and show.
Claims (8)
1. novel hydraulic excavator independence cooling control system; Comprise master controller, watch-dog, motor, ECM, hydraulic fluid temperature sensor (1), first fan motor, second fan motor, first radiator and second radiator; It is characterized in that, also comprise fan pump (6), reverse signal trigger switch (2), solenoid operated directional valve (3) and inverse proportion electromagnetic proportional valve (7); Monitor, hydraulic fluid temperature sensor (1) and reverse signal trigger switch (2) are electrically connected master controller respectively; Master controller is electrically connected motor through ECM; Motor is electrically connected fan pump (6), and fan pump (6) connects first fan motor and second fan motor respectively; Master controller is electrically connected fan pump (6) through inverse proportion electromagnetic proportional valve (7), and master controller is electrically connected first fan motor and second fan motor through solenoid operated directional valve (3); First fan motor and second fan motor be corresponding first radiator and second radiator respectively, and first radiator and the parallel connection of second radiator.
2. novel hydraulic excavator independence cooling control system according to claim 1 is characterized in that, described hydraulic fluid temperature sensor (1) is installed near the inlet port of hydraulic oil container (5) bottom.
3. novel hydraulic excavator independence cooling control system according to claim 1 and 2 is characterized in that described hydraulic fluid temperature sensor (1) is the voltage-type temperature pick up.
4. novel hydraulic excavator independence cooling control system according to claim 1 is characterized in that described fan pump (6) is the automatically controlled Variable plunger pump of inverse proportion.
5. novel hydraulic excavator independence cooling control system according to claim 1 is characterized in that, the rocker switch that described reverse signal trigger switch (2) resets for band.
6. novel hydraulic excavator independence cooling control system according to claim 1 is characterized in that described first radiator is the engine water radiator, and second radiator is a hydraulic oil radiator.
7. novel hydraulic excavator independence cooling control system according to claim 1 is characterized in that, is connected for the CAN bus between described master controller and the ECM.
8. novel hydraulic excavator independence cooling control system according to claim 1 is characterized in that, is connected for the CAN bus between described master controller and the watch-dog.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120367578 CN202273261U (en) | 2011-10-01 | 2011-10-01 | Independent heat dissipation control system of novel hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120367578 CN202273261U (en) | 2011-10-01 | 2011-10-01 | Independent heat dissipation control system of novel hydraulic excavator |
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| Publication Number | Publication Date |
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| CN202273261U true CN202273261U (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120367578 Expired - Lifetime CN202273261U (en) | 2011-10-01 | 2011-10-01 | Independent heat dissipation control system of novel hydraulic excavator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418362A (en) * | 2011-10-01 | 2012-04-18 | 徐州徐工挖掘机械有限公司 | Novel independent heat dissipation control system for hydraulic excavator |
| CN102995699A (en) * | 2012-12-13 | 2013-03-27 | 三一重机有限公司 | Excavator and hydraulic oil heat dissipation power adjusting device thereof |
| CN111485986A (en) * | 2020-03-26 | 2020-08-04 | 潍柴动力股份有限公司 | Control method and control device for engine cooling system and engine cooling system |
| CN112177091A (en) * | 2020-10-14 | 2021-01-05 | 徐州徐工矿业机械有限公司 | Independent heat dissipation system for hydraulic excavator and control method |
| CN113606029A (en) * | 2021-08-31 | 2021-11-05 | 三一重机有限公司 | Control method and control device for cooling fan, engineering machine and storage medium |
-
2011
- 2011-10-01 CN CN 201120367578 patent/CN202273261U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418362A (en) * | 2011-10-01 | 2012-04-18 | 徐州徐工挖掘机械有限公司 | Novel independent heat dissipation control system for hydraulic excavator |
| CN102418362B (en) * | 2011-10-01 | 2014-01-22 | 徐州徐工挖掘机械有限公司 | Novel independent heat dissipation control system for hydraulic excavator |
| CN102995699A (en) * | 2012-12-13 | 2013-03-27 | 三一重机有限公司 | Excavator and hydraulic oil heat dissipation power adjusting device thereof |
| CN102995699B (en) * | 2012-12-13 | 2016-01-20 | 三一重机有限公司 | Excavator and hydraulic oil heat dissipation power adjusting device thereof |
| CN111485986A (en) * | 2020-03-26 | 2020-08-04 | 潍柴动力股份有限公司 | Control method and control device for engine cooling system and engine cooling system |
| CN112177091A (en) * | 2020-10-14 | 2021-01-05 | 徐州徐工矿业机械有限公司 | Independent heat dissipation system for hydraulic excavator and control method |
| CN113606029A (en) * | 2021-08-31 | 2021-11-05 | 三一重机有限公司 | Control method and control device for cooling fan, engineering machine and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120613 Effective date of abandoning: 20140122 |
|
| RGAV | Abandon patent right to avoid regrant |