CN103291691B - Temperature control method and equipment for hydraulic cooling system and engineering machinery - Google Patents
Temperature control method and equipment for hydraulic cooling system and engineering machinery Download PDFInfo
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- CN103291691B CN103291691B CN201310241489.7A CN201310241489A CN103291691B CN 103291691 B CN103291691 B CN 103291691B CN 201310241489 A CN201310241489 A CN 201310241489A CN 103291691 B CN103291691 B CN 103291691B
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 38
- 238000005070 sampling Methods 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims description 43
- 239000003921 oil Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention discloses a temperature control method of a hydraulic cooling system, temperature control equipment of the hydraulic cooling system and engineering machinery. The method comprises the following steps: by sampling timeContinuously acquiring hydraulic oil temperature data at intervals of delta t; determining a function T (T) of the change of the hydraulic oil temperature T along with the time T according to the hydraulic oil temperature data acquired at the time points of at least two continuous sampling time intervals delta T; calculating the temperature T of the hydraulic oil reaching the warning temperature T according to the function T (T) of the change of the temperature T of the hydraulic oil along with the time TNAt a warning time tN(ii) a According to the warning time tNAnd carrying out corresponding temperature control operation. The invention can acquire the time when the temperature of the hydraulic oil reaches the warning temperature and control the temperature of the hydraulic oil in advance.
Description
Technical field
The present invention relates to hydraulic cooling system field, particularly, relate to a kind of hydraulic cooling system temperature control method, a kind of hydraulic cooling system Temperature-controlled appliance and a kind of engineering machinery.
Background technique
Engineering machinery (such as, pump truck etc.) can produce a large amount of heats when operation, when high oil temperature, will cause hydraulic oil characteristic deteriorate, and affect device security and working life.Therefore, need the temperature (namely lowering the temperature) being carried out hydraulic control oil by cooling blower, thus hydraulic oil is maintained relatively low temperature, to ensure normal work and the Security of engineering machinery.
In the prior art, cooling system generally controls the rotating speed of blower fan according to the temperature of hydraulic oil, and such as, hydraulic fluid temperature increases and then increases rotation speed of fan.And; can apply in more situation to make equipment; generally can set unacceptable high temperature threshold value (such as; this threshold value is set as 90 DEG C by some pump trucks) and when systems axiol-ogy to hydraulic oil temperature higher than the mode of just taking measures during this temperature (be generally now perform shut down quenching operations because now the cooling capacity of cooling system for construction machinery has all been transferred).
But when the hydraulic oil of system has reached threshold temperature, its characteristic has degenerated or local degenerates, if fail to get rid of failure in time or bad hidden danger of dispelling the heat will cause potential safety hazard.And at some extreme environment, even if cooling blower full-speed operation its can not stop the rising constantly of hydraulic fluid temperature.Because system only just takes safety measures when hydraulic fluid temperature reaches threshold temperature; be easy to cause engineering machinery operation when running bad; and urgent safety measure also can cause equipment can not shut down after taking necessary measure (as pump truck fails the material in delivery pipe and hopper to discharge), and causes other economic losses.
Summary of the invention
For the above-mentioned problems in the prior art, the invention provides a kind of hydraulic cooling system temperature control method, the method comprises with sampling time interval Δ t continuous acquisition hydraulic oil temperature degrees of data; The hydraulic oil temperature degrees of data that the time point of sampling time interval Δ t collects according at least two continuous print determines the function T(t of hydraulic fluid temperature T t change in time); According to described hydraulic fluid temperature T in time t change function T(t) calculate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
n; And according to described warning moment t
ncarry out correspondingly temperature control operation.
Correspondingly, present invention also offers a kind of hydraulic cooling system Temperature-controlled appliance, this equipment comprises collecting device, with sampling time interval Δ t continuous acquisition hydraulic oil temperature degrees of data; The controller be connected with described collecting device, this controller is used for: the hydraulic oil temperature degrees of data that the time point of sampling time interval Δ t collects according at least two continuous print determines the function T(t of hydraulic fluid temperature T t change in time); According to described hydraulic fluid temperature T in time t change function T(t) calculate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
n; And according to described warning moment t
ncarry out correspondingly temperature control operation.
In addition, present invention also offers a kind of engineering machinery comprising hydraulic cooling system Temperature-controlled appliance according to embodiment of the present invention.
Adopt hydraulic cooling system temperature control method provided by the invention, equipment and engineering machinery, warning temperature T can be preset
n(i.e. unacceptable high temperature threshold value), according to collect hydraulic oil temperature degrees of data determine hydraulic fluid temperature T in time t change function T(t), predict the temperature tendency of hydraulic oil thus, thus can estimate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
nto leave the time of emergency processing to operator, and different temperature control operation can be carried out according to the length of this time, in advance hydraulic fluid temperature is controlled, hydraulic fluid temperature can be controlled in desirable temperature range, ensure the safe operation of engineering machinery (such as pump truck) and reduce the economic loss that can only take urgent measure due to apparatus overheat (such as, arrestment run) bring.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the exemplary hydraulic cooling system Temperature-controlled appliance according to one embodiment of the present invention;
Fig. 2 is the exemplary hydraulic cooling system temperature variation curve according to one embodiment of the present invention;
Fig. 3 is the structural representation of the exemplary hydraulic cooling system Temperature-controlled appliance according to another embodiment of the invention; And
Fig. 4 is the flow chart of the exemplary hydraulic cooling system temperature control method according to one embodiment of the present invention.
Description of reference numerals
100 collecting device 200 controller 300 warning devices
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the schematic diagram of the exemplary hydraulic cooling system Temperature-controlled appliance according to one embodiment of the present invention.As shown in Figure 1, this equipment comprises: collecting device 100, with sampling time interval Δ t continuous acquisition hydraulic oil temperature degrees of data; The controller 200 be connected with described collecting device, this controller 200 determines the function T(t of hydraulic fluid temperature T t change in time for: the hydraulic oil temperature degrees of data that the time point of sampling time interval Δ t collects according at least two continuous print); According to described hydraulic fluid temperature T in time t change function T(t) calculate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
n; And according to described warning moment t
ncarry out correspondingly temperature control operation.
Specifically, first collecting device 100 gathers hydraulic oil temperature degrees of data with sampling time interval Δ t, this collecting device 100 can be any suitable temperature collecting device (such as, temperature transducer etc.), and should be understood that, can arrange according to actual conditions (such as, engine idle or high speed operation) and select sampling time interval Δ t.Preferably, the scope of sampling time interval Δ t is for can be set to 5-10 minute, because hydraulic oil exchanges comparatively fully and load variations is relatively little within this time period; Meanwhile, also sampling time interval Δ t can be set to other values (such as 30 minutes), the present invention does not limit this.Afterwards, the hydraulic oil temperature degrees of data collected is sent to connected controller 200 by collecting device 100.
Fig. 2 is the exemplary hydraulic cooling system temperature variation curve according to one embodiment of the present invention.According to one embodiment of the present invention, because the rotating speed increasing air cooler in hydraulic cooling system can change temperature variation curve, consider and as early as possible temperature controlled and early warning, can according to the hydraulic fluid temperature T under air cooler rotating speed maximum case in time t change function T(t) calculate arrive warning temperature T
nwarning moment t
n(as shown in Figure 2), that is:
T(t)＝Ae
-kt+B（1）
Wherein, A is transient-state temperature coefficient, and k is time constant, and B is steady temperature coefficient.
Controller 200 can first according to hydraulic oil temperature degrees of data (such as, as shown in Figure 2, the moment t that the time point of at least two continuous print sampling time interval Δ t collects
1, t
2, t
3hydraulic fluid temperature T
1, T
2, T
3) determine hydraulic fluid temperature T in time t change function T(t), i.e. formula (1).Such as, the hydraulic oil temperature degrees of data collected according to the time point of above-mentioned two continuous print sampling time interval Δ t can calculate parameter A in formula (1), B, k.That is:
k＝ln[(T
1-T
2)/(T
2-T
3)]/Δt
A＝(T
1-T
2)/(1-e
-kΔt)（2）
B＝T
1-A
Formula (2) is substituted into the function T(t that formula (1) can draw hydraulic fluid temperature T t change in time).
Should be understood that, the above-mentioned time point according to two continuous print sampling time interval Δ t gathers hydraulic oil temperature degrees of data thus determines above-mentioned function T(t) be only a kind of explanation example embodiment of the present invention, those skilled in the art can also determine parameter A, B, k according to the hydraulic oil temperature degrees of data of the time point of multiple continuous print sampling time interval Δ t (such as, five time points or more time point).According to another embodiment of the invention, can by adjusting sampling time interval Δ t in real time or carrying out the process such as denoising (such as to the hydraulic oil temperature degrees of data collected, the filtering modes such as mean filter) etc. mode optimize the function T(t of the hydraulic fluid temperature T that draws t change in time), thus the warning moment t accurately calculated further
n, the present invention does not limit this.
Afterwards, controller 200 can according to current determined function T(t) predict current oil temperature tendency, and calculate hydraulic fluid temperature T and reach warning temperature T
nwarning moment t
n(as shown in Figure 2).Such as, controller 200 can be previously stored with warning temperature T
n, this warning temperature T
ncan arrange according to actual conditions, (such as, ideal working temperature is 20 ° of C-70 ° of C to certain numerical value that can be set to beyond the expectation of hydraulic working oil or ideal temperature, can warning temperature T
nbe set to 80 ° of C).Preferably, controller 200 can according to the program pre-set, by the warning moment t calculated
ndetermine advanced warning grade, and carry out correspondingly temperature control operation according to determined advanced warning grade.
According to one embodiment of the present invention, controller 200 can receive current time t
c(such as from the calendar scheduling in the artificial input of related personnel or system), and according to alert time t
n-t
cdetermine advanced warning grade, carry out correspondingly temperature control operation according to determined advanced warning grade afterwards, wherein t
n-t
ci.e. described alert time.That is, by current time to warning moment t
nthe length of alert time (namely to the emergency processing time that operator stays) corresponding Temperature Control Measures can be taked, to avoid the generation of overtemperature situation.
Specifically, controller 200 can by alert time t
n-t
ccompare with the early warning range prestored, and determine advanced warning grade according to comparative result, to carry out correspondingly temperature control operation.Such as, as first threshold≤alert time t
n-t
cduring≤Second Threshold, controller 200 can be defined as one-level early warning, controls the rotating speed and/or the minimizing operation intensity that increase cooling blower; As alert time t
n-t
cduring < first threshold, controller 200 can be defined as secondary early warning, stop operation and send alarm command, wherein said Second Threshold is greater than described first threshold, and described first threshold and Second Threshold can be arranged according to actual conditions, and the present invention does not limit this.
For example, sampling time interval Δ t can be set to 10 minutes, first threshold and Second Threshold are set to 20 minutes and 50 minutes respectively.Such as, as alert time t
n-t
cduring >50 minute, controller 200 can determine that this fashion does not need to report to the police, and continuation gathers hydraulic oil temperature degrees of data and upgrades the function T(t of hydraulic fluid temperature T t change in time according to said process), and calculate the warning moment t made new advances
ndeng execution said temperature control procedure; As 20 minutes≤alert time t
n-t
cwhen≤50 minutes, controller 200 can be defined as one-level early warning, now by controlling the rotating speed and/or the minimizing operation intensity that increase cooling blower, such as controlled cooling model blower fan increases speed, or the heat energy that workload (such as, reducing the pump displacement of pump truck) reduces system generation is then reduced when blower fan reaches maximum (top) speed; As alert time t
n-t
cduring < 20 minutes; controller 200 can be defined as secondary early warning; now be about to overtemperature situation occurs; controller 200 can control to stop operation (such as stopping pumping for pump truck) at once and send alarm command (such as alarm command can be outputted to the device that buzzer, tutorial light, display screen etc. have alarm function) and remind operator to take necessary measure (such as remind operator to take the measures such as anti-pump, avoid concrete materials to condense in delivery pipe because of equipment downtime and cause loss from spoilage).According to the embodiment of the present invention, can realize controlling hydraulic fluid temperature in advance, and hydraulic fluid temperature is controlled in desirable temperature range.
According to another kind of mode of execution, controller 200 can also by ratio (the i.e. t between alert time and sampling time interval Δ t
n-t
c/ Δ t) compare with the early warning range prestored, and determine advanced warning grade according to comparative result, to carry out correspondingly temperature control operation, for example, early warning range can be arranged to the value corresponding with above-mentioned first threshold or Second Threshold, such as, early warning range be set to 2≤t
n-t
c/ Δ t≤5 etc., and this early warning range can be arranged according to actual conditions, and the present invention does not limit this.
The manner of comparison of above-mentioned early warning range and alert time is only a kind of explanation illustrative embodiments of the present invention, those skilled in the art can arrange early warning range and selection and comparison mode, to carry out control temperature neatly according to actual conditions or expected value according to the configuration of actual conditions or hydraulic cooling system.
According to another embodiment of the invention, in order at current time t
cunder more accurately predict current oil temperature tendency, current time t
cfor last time point in the time point of above-mentioned two continuous print sampling time interval Δ t, like this by the determined function T(t of said process) reflect be ought for the previous period in oil temperature situation, more close to actual oil temperature tendency.
For example, moment t is in fig. 2 supposed
3for current time t
c, controller 200 can by gathering moment t
1, t
2, t
3under hydraulic oil temperature degrees of data determine hydraulic fluid temperature T in time t change function T(t), wherein moment t
3corresponding to last time point (as shown in Figure 2) in the time point of two continuous print sampling time interval Δ t, controller 200 can according to alert time t afterwards
n-t
3determine above-mentioned advanced warning grade, and carry out said temperature control operation.
Fig. 3 is the schematic diagram of the exemplary hydraulic cooling system Temperature-controlled appliance according to another embodiment of the invention.According to another embodiment of the invention, as shown in Figure 3, this equipment can also comprise warning device 300, is connected with controller 200, for carrying out alarm operation according to described alarm command.Preferably, described warning device 300 comprises the device that display screen, tutorial light, buzzer etc. have indicative function.
Such as, warning device 300 can show the advanced warning grade (such as, one-level early warning or secondary early warning) determined on a display screen in real time, reminds related personnel.When warning device 300 receives the alarm command from control 200, it can open tutorial light and buzzer should stop operation immediately to warn operator, avoids misoperation.According to above-mentioned mode of execution, the while of can realizing temperature controlled to hydraulic cooling system, improve again the Security of whole control procedure.
Fig. 4 is the flow chart of the exemplary hydraulic cooling system temperature control method according to one embodiment of the present invention.As shown in Figure 4, the method comprises:
In step 1001, with sampling time interval Δ t continuous acquisition hydraulic oil temperature degrees of data;
In step 1002, the hydraulic oil temperature degrees of data that the time point of sampling time interval Δ t collects according at least two continuous print determines the function T(t of hydraulic fluid temperature T t change in time);
In step 1003, according to hydraulic fluid temperature T in time t change function T(t) calculate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
n; And
In step 1004, according to described warning moment t
ncarry out correspondingly temperature control operation.
Wherein, the function T(t of described hydraulic fluid temperature T t change in time) be T (t)=Ae
-kt+ B, i.e. formula (1).Preferably, the scope of sampling time interval Δ t can be 5-10 minute.
Wherein, in step 1004, describedly carry out correspondingly temperature control operation according to described warning moment tN, specifically comprise: according to described warning moment t
ndetermine advanced warning grade, and correspondingly temperature control operation described in carrying out according to determined advanced warning grade.Preferably, described according to described warning moment t
ndetermine that advanced warning grade comprises: receive current time t
c, and according to alert time t
n-t
cdetermine described advanced warning grade.
Preferably, described current time t
ccorresponding to last time point in the time point of sampling time interval Δ t described in described at least two continuous print.
Preferably, described according to alert time t
n-t
cdetermine described advanced warning grade and correspondingly temperature control operation described in carrying out according to determined advanced warning grade, comprise as first threshold≤alert time t
n-t
cduring≤Second Threshold, be defined as one-level early warning, increase the rotating speed of cooling blower and/or reduce operation intensity, and as alert time t
n-t
cduring < first threshold, be defined as secondary early warning, stop operation and send alarm command, wherein said Second Threshold is greater than first threshold.
For the function T(t of hydraulic fluid temperature T t change in time in said method step) determination, the setting of sampling time interval Δ t, early warning range and current time t
cdeng selection and the mode of execution to arrange etc. described above, do not repeat them here.
Correspondingly, present invention also offers a kind of engineering machinery (not shown) of the hydraulic cooling system Temperature-controlled appliance according to embodiment of the present invention, this project machinery not only can comprise the hydraulic cooling system Temperature-controlled appliance according to embodiment of the present invention as mentioned above, and this project machinery also can adopt above-mentioned hydraulic cooling system temperature control method to carry out said temperature control operation.Should be understood that, this project machinery can be any equipment needing cooling system, such as pump truck.
Adopt hydraulic cooling system temperature control method provided by the invention, equipment and engineering machinery, warning temperature T can be preset
n(i.e. unacceptable high temperature threshold value), according to collect hydraulic oil temperature degrees of data determine hydraulic fluid temperature T in time t change function T(t), predict the temperature tendency of hydraulic oil thus, thus can estimate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
nto leave the time of emergency processing to operator, and different temperature control operation can be carried out according to the length of this time, in advance hydraulic fluid temperature is controlled, hydraulic fluid temperature can be controlled in desirable temperature range, ensure the safe operation of engineering machinery (such as pump truck) and reduce the economic loss that can only take urgent measure due to apparatus overheat (such as, arrestment run) bring.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (15)
1. a hydraulic cooling system temperature control method, is characterized in that, the method comprises:
With sampling time interval Δ t continuous acquisition hydraulic oil temperature degrees of data;
The hydraulic oil temperature degrees of data that the time point of sampling time interval Δ t collects according at least two continuous print determines the function T(t of hydraulic fluid temperature T t change in time);
According to described hydraulic fluid temperature T in time t change function T(t) calculate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
n; And
According to described warning moment t
ncarry out correspondingly temperature control operation.
2. method according to claim 1, is characterized in that, the function T(t of described hydraulic fluid temperature T t change in time) be T (t)=Ae
-kt+ B, A are transient-state temperature coefficient, and k is time constant, and B is steady temperature coefficient.
3. method according to claim 1, is characterized in that, the scope of described sampling time interval Δ t is 5-10 minute.
4. method according to claim 1, is characterized in that, described according to described warning moment t
ncarry out correspondingly temperature control operation, specifically comprise: according to described warning moment t
ndetermine advanced warning grade, and correspondingly temperature control operation described in carrying out according to determined advanced warning grade.
5. method according to claim 4, is characterized in that, described according to described warning moment t
ndetermine that advanced warning grade comprises: receive current time t
c, and according to alert time t
n-t
cdetermine described advanced warning grade.
6. method according to claim 5, is characterized in that, described current time t
ccorresponding to last time point in the time point of sampling time interval Δ t described in described at least two continuous print.
7. method according to claim 5, is characterized in that, described according to alert time t
n-t
cdetermine described advanced warning grade and correspondingly temperature control operation described in carrying out according to determined advanced warning grade, comprise as first threshold≤alert time t
n-t
cduring≤Second Threshold, be defined as one-level early warning, increase the rotating speed of cooling blower and/or reduce operation intensity, and as alert time t
n-t
cduring < first threshold, be defined as secondary early warning, stop operation and send alarm command, wherein said Second Threshold is greater than described first threshold.
8. a hydraulic cooling system Temperature-controlled appliance, is characterized in that, this equipment comprises:
Collecting device, with sampling time interval Δ t continuous acquisition hydraulic oil temperature degrees of data;
The controller be connected with described collecting device, this controller is used for: the hydraulic oil temperature degrees of data that the time point of sampling time interval Δ t collects according at least two continuous print determines the function T(t of hydraulic fluid temperature T t change in time); According to described hydraulic fluid temperature T in time t change function T(t) calculate hydraulic fluid temperature T reach warning temperature T
nwarning moment t
n; And
According to described warning moment t
ncarry out correspondingly temperature control operation.
9. equipment according to claim 8, is characterized in that, the function T(t of described hydraulic fluid temperature T t change in time) be T (t)=Ae
-kt+ B, A are transient-state temperature coefficient, and k is time constant, and B is steady temperature coefficient.
10. equipment according to claim 8, is characterized in that, the scope of described sampling time interval Δ t is 5-10 minute.
11. equipment according to claim 8, is characterized in that, described according to described warning moment t
ncarry out correspondingly temperature control operation, specifically comprise: according to described warning moment t
ndetermine advanced warning grade, and correspondingly temperature control operation described in carrying out according to determined advanced warning grade.
12. equipment according to claim 11, is characterized in that, described according to described warning moment t
ndetermine that advanced warning grade comprises: receive current time t
c, and according to alert time t
n-t
cdetermine described advanced warning grade.
13. equipment according to claim 12, is characterized in that, described current time t
ccorresponding to last time point in the time point of sampling time interval Δ t described in described at least two continuous print.
14. equipment according to claim 12, is characterized in that, described according to alert time t
n-t
cdetermine described advanced warning grade and correspondingly temperature control operation described in carrying out according to determined advanced warning grade, comprise as first threshold≤alert time t
n-t
cduring≤Second Threshold, be defined as one-level early warning, control the rotating speed and/or the minimizing operation intensity that increase cooling blower, and described controller be as alert time t
n-t
cduring < first threshold, be defined as secondary early warning, stop operation and send alarm command, wherein said Second Threshold is greater than described first threshold.
15. 1 kinds of engineering machinery, is characterized in that, this project machinery comprises the hydraulic cooling system Temperature-controlled appliance according to any one of claim 8-14.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241489.7A CN103291691B (en) | 2013-06-18 | 2013-06-18 | Temperature control method and equipment for hydraulic cooling system and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241489.7A CN103291691B (en) | 2013-06-18 | 2013-06-18 | Temperature control method and equipment for hydraulic cooling system and engineering machinery |
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|---|---|
| CN103291691A CN103291691A (en) | 2013-09-11 |
| CN103291691B true CN103291691B (en) | 2016-03-02 |
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|---|---|---|---|
| CN201310241489.7A Active CN103291691B (en) | 2013-06-18 | 2013-06-18 | Temperature control method and equipment for hydraulic cooling system and engineering machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527566B (en) * | 2013-10-16 | 2015-10-28 | 上海中联重科桩工机械有限公司 | Engineering machinery heat dissipation control equipment, system and method and engineering machinery |
| CN113775607B (en) * | 2021-08-23 | 2022-09-02 | 中联重科股份有限公司 | Control method and control device for hydraulic oil cooling system and processor |
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|---|---|---|---|---|
| GB1161985A (en) * | 1966-07-26 | 1969-08-20 | English Electric Co Ltd | Device for Determining the Temperature of Electrical Apparatus |
| CN2929675Y (en) * | 2006-07-31 | 2007-08-01 | 徐州重型机械有限公司 | Monitoring device for engineering machinery fluid temperature |
| CN102305672A (en) * | 2011-07-27 | 2012-01-04 | 奇瑞汽车股份有限公司 | Temperature measuring device of automotive power steering fluid |
| CN102493323A (en) * | 2011-12-02 | 2012-06-13 | 中联重科股份有限公司 | Vibration bearing temperature monitoring method, device and system and road roller |
| CN202814565U (en) * | 2012-08-27 | 2013-03-20 | 华锐风电科技(集团)股份有限公司 | Temperature monitoring device of a fan gear box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4037854B2 (en) * | 2004-07-06 | 2008-01-23 | 住友建機製造株式会社 | Construction machine travel drive control device |
-
2013
- 2013-06-18 CN CN201310241489.7A patent/CN103291691B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1161985A (en) * | 1966-07-26 | 1969-08-20 | English Electric Co Ltd | Device for Determining the Temperature of Electrical Apparatus |
| CN2929675Y (en) * | 2006-07-31 | 2007-08-01 | 徐州重型机械有限公司 | Monitoring device for engineering machinery fluid temperature |
| CN102305672A (en) * | 2011-07-27 | 2012-01-04 | 奇瑞汽车股份有限公司 | Temperature measuring device of automotive power steering fluid |
| CN102493323A (en) * | 2011-12-02 | 2012-06-13 | 中联重科股份有限公司 | Vibration bearing temperature monitoring method, device and system and road roller |
| CN202814565U (en) * | 2012-08-27 | 2013-03-20 | 华锐风电科技(集团)股份有限公司 | Temperature monitoring device of a fan gear box |
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|---|---|
| CN103291691A (en) | 2013-09-11 |
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