CN105156405A - Hydraulic oil cooling system, crane and control method for hydraulic oil cooling system - Google Patents
Hydraulic oil cooling system, crane and control method for hydraulic oil cooling system Download PDFInfo
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- CN105156405A CN105156405A CN201510454501.1A CN201510454501A CN105156405A CN 105156405 A CN105156405 A CN 105156405A CN 201510454501 A CN201510454501 A CN 201510454501A CN 105156405 A CN105156405 A CN 105156405A
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Abstract
The invention relates to a hydraulic oil cooling system, a control method and a crane. The hydraulic oil cooling system is arranged in a hydraulic system comprising two or more sub-systems executing different operations and comprises a starting temperature control switch, a stopping temperature control switch and a controller, wherein the starting temperature control switch is used for outputting signals when the temperature of an oil return path rises to T1; the stopping temperature control switch is used for outputting signals when the temperature of the oil return path falls to T2, and T2 is smaller than T1; the controller is used for controlling a heat radiator to carry out heat radiation at heat radiation power adaptive to the sub-system working currently after receiving the signals output by the starting temperature control switch and controlling the heat radiator to stop working after receiving the signals output by the stopping temperature control switch. According to the hydraulic oil cooling system and the control method, different heat radiation power gears can be selected for the different sub-systems, real-time detection is carried out in combination with the starting temperature control switch and the stopping temperature control switch, the situation that a heat radiation system starts and stops occasionally due to the fact that the heating amounts of all the hydraulic sub-systems are inconsistent can be effectively avoided, and therefore the reliability of the heat radiation system is improved, and the service life of the heat radiation system is prolonged.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of hydraulic oil cooling system, hoist and hydraulic oil cooling system controlling method.
Background technique
Telescopic boom crawler crane combines the feature of truck crane and crawler crane, what both possessed that wheeled telescopic arm crane has does not need dismounting, maneuverability, the feature that can work under height-limited occasion, concentrated again crawler crane hang that carrying capacity is large, revolution steadily, can with carrying walking and can in the feature of highway occasion work.
Along with the exploitation of telescopic boom crawler crane, more and more higher to the control overflow of its hydraulic system temperature rise.At present, medium and small tonnage telescopic arm crawler crane hydraulic oil cooling system generally adopts temperature detect switch (TDS) to control the radiator of fixing heat radiation power, carries out thermal equilibrium to the hydraulic system of hoisting operation and traveling operation part.
Particularly, hydraulic oil cooling system of the prior art as shown in Figure 1, hoisting operation hydraulic system 5a and traveling operation hydraulic system 6a shares an oil pump device 2a and multi-way valve 3a, and the switching worked both being realized by switching valve 4a, both oil returns gather gets back to hydraulic oil container 1a to radiator 8a, thus realizes the thermal equilibrium of hydraulic system.Because hoisting operation hydraulic system 5a is lower relative to the heat radiation power travelling operation hydraulic system 6a requirement, in order to meet the thermal equilibrium of hoisting operation hydraulic system 5a and traveling operation hydraulic system 6a simultaneously, the heat radiation power of radiator 8a chooses the higher value in both.
Its working procedure is: when hoisting operation hydraulic system 5a works, when temperature detect switch (TDS) 7a detects that hydraulic fluid temperature reaches setting value T1, the motor 9a exported in electrical signal control radiator 8a opens rapidly, dispels the heat to hydraulic system with fixed rotating speed (corresponding fixing heat radiation power).Because the heat radiation power of radiator 8a is higher, then the temperature of hydraulic oil will reduce fast, when temperature is lower than T1 value, temperature detect switch (TDS) 7a exports without electrical signal, and the motor 9a controlling radiator 8a closes, then radiator 8a stops heat radiation, and hoisting operation hydraulic system 5a works on generation heat, hydraulic fluid temperature continues to raise, and reaches T1 value, radiator 8a opens and dispels the heat, and goes round and begins again.
Although this kind of radiation system can by the hydraulic fluid temperature of temperature detect switch (TDS) real-time monitoring system, thus automatically carry out radiating control, but in order to meet the thermal equilibrium of two cover hydraulic systems, can the heat radiation power of radiator be set higher, thus cause closing when holding during the radiator meeting when hoisting operation hydraulic work system, have a strong impact on the life-span of radiation system element.
Summary of the invention
The object of the invention is to propose a kind of hydraulic oil cooling system, hoist and hydraulic oil cooling system controlling method, reliability and the life-span of hydraulic oil cooling system can be promoted.
For achieving the above object, first aspect present invention provides a kind of hydraulic oil cooling system, be arranged on and perform in the hydraulic system of the subtense angle of different work containing two or more, the action of subtense angle described in each is switched by switching valve 4, comprise controller, the radiator 9 be arranged in the oil return circuit of described hydraulic system, start temperature detect switch (TDS) 7 and stop temperature detect switch (TDS) 8
Described startup temperature detect switch (TDS) 7 is for outputing signal when the temperature of described oil return circuit rises to the first predefined value T1;
Described stopping temperature detect switch (TDS) 8 is for outputing signal when the temperature of described oil return circuit drops to the second predefined value T2, and wherein T2 is less than T1;
Described controller is used for after the signal receiving the output of described startup temperature detect switch (TDS) 7, control the heat radiation power that described radiator 9 adapts according to the described subtense angle with work at present to dispel the heat, after the signal receiving the output of described stopping temperature detect switch (TDS) 8, control described radiator 9 and close.
Further, described controller comprises:
Signal receiving unit 31, for receiving the signal of described startup temperature detect switch (TDS) 7 and the output of described stopping temperature detect switch (TDS) 8;
Gear selection unit 32, for determining corresponding heat radiation power gear according to the described subtense angle of work at present;
Control command unit 33, for receive at described signal receiving unit 31 described startup temperature detect switch (TDS) 7 export signal after, the heat radiation power gear determined according to described gear selection unit 32 controls described radiator 9 and dispels the heat, and described signal receiving unit 31 receive described stopping temperature detect switch (TDS) 8 export signal after, control described radiator 9 and close.
Further, described controller also comprises delay unit 34, described delay unit 34, for after the signal that receives described stopping temperature detect switch (TDS) 8 at described signal receiving unit 31 and export, triggers described control command unit 33 again control described radiator 9 and close according to preset time t after carrying out time delay.
Further, described radiator 9 comprises radiation fan and motor 10, and described motor 10 is speed-adjustable motor, can change the rotating speed of described radiation fan under the control of described controller.
Further, described radiator 9 comprises radiation fan, and the rotating speed of described radiation fan is changed by the flow changing described hydraulic system.
For achieving the above object, second aspect present invention provides a kind of hoist, comprise the hydraulic oil cooling system described in above-described embodiment, described hydraulic system comprises two described subtense angles, and two described subtense angles are respectively hoisting operation hydraulic system and travel operation hydraulic system.
For achieving the above object, third aspect present invention provides a kind of hydraulic oil cooling system controlling method, based on the hydraulic oil cooling system described in above-described embodiment, comprising:
Described controller judges the described subtense angle of work at present;
Described startup temperature detect switch (TDS) 7 outputs signal when the temperature of described oil return circuit rises to the first predefined value T1;
Described controller controls the heat radiation power that described radiator 9 adapts according to the described subtense angle with work at present and dispels the heat;
Described stopping temperature detect switch (TDS) 8 outputs signal when the temperature of described oil return circuit drops to the second predefined value T2;
Described controller controls described radiator 9 and closes.
Further, described controller controls the step that described radiator 9 carries out dispelling the heat according to the heat radiation power that the described subtense angle with work at present adapts and comprises:
Described controller determines corresponding heat radiation power gear according to the described subtense angle of work at present;
After the signal receiving the output of described startup temperature detect switch (TDS) 7, described controller controls described radiator 9 according to the heat radiation power gear determined and dispels the heat.
Further, also comprise: after the signal receiving the output of described stopping temperature detect switch (TDS) 8, described controller controls described radiator 9 and closes after carrying out time delay according to preset time t.
Further, described radiator 9 comprises radiation fan and motor 10, and described motor 10 is speed-adjustable motor, and described controller controls according to the heat radiation power gear determined the step that described radiator 9 carries out dispelling the heat and comprises:
Described controller exports the control electric current for driving described motor 10 according to the heat radiation power gear determined;
Based on described control electric current, described motor 10 drives described radiation fan work.
Further, the rotating speed of described radiation fan is changed by the flow changing described hydraulic system, and described controller controls according to the heat radiation power gear determined the step that described radiator 9 carries out dispelling the heat and comprises:
Described controller exports the control signal for changing hydraulic fluid flow rate in described hydraulic system according to the heat radiation power gear determined;
Described radiation fan work is driven by the hydraulic oil in described hydraulic system.
Based on technique scheme, the hydraulic oil cooling system of the embodiment of the present invention, controller can after receiving the signal starting temperature detect switch (TDS) output, the heat radiation power that control radiator adapts according to the subtense angle with work at present dispels the heat, that is different heat radiation power gears can be selected for subtense angles different in hydraulic system, and combine startup temperature detect switch (TDS) and stop temperature detect switch (TDS) detecting in real time, can effectively avoid due to different engine, close when opening during the radiation system that the factors such as valve port opening and lift heavy amount cause each hydraulic subsystem heating value inconsistent and cause, thus the reliability of heat radiation system and life-span.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram of hydraulic oil cooling system in prior art;
Fig. 2 is the hydraulic schematic diagram of an embodiment of hydraulic oil cooling system of the present invention;
Fig. 3 is the control block diagram of an embodiment of hydraulic oil cooling system of the present invention;
Fig. 4 is the schematic flow sheet of an embodiment of hydraulic oil cooling system controlling method of the present invention;
Fig. 5 is the schematic flow sheet of a specific embodiment of hydraulic oil cooling system controlling method of the present invention;
Fig. 6 is the schematic flow sheet of an embodiment of step 103 in hydraulic oil cooling system controlling method of the present invention.
Description of reference numerals
1a-hydraulic oil container; 2a-oil pump device; 3a-multi-way valve; 4a-switching valve; 5a-hoisting operation hydraulic system; 6a-travels operation hydraulic system; 7a-temperature detect switch (TDS); 8a-radiator; 9a-motor;
1-hydraulic oil container; 2-oil pump device; 3-multi-way valve; 4-switching valve; 5-hoisting operation hydraulic system; 6-walks operation hydraulic system; 7-starts temperature detect switch (TDS); 8-stops temperature detect switch (TDS); 9-radiator; 10-motor;
31-signal receiving unit; 32-gear selection unit; 33-control command unit; 34-delay unit.
Embodiment
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
In order to avoid closing when opening during inconsistent due to each subtense angle heating value in hydraulic system and the radiation system caused as far as possible, the heat radiation of the present invention to this hydraulic system containing multiple different sub-systems is studied in detail, and next will further illustrate design of the present invention by specific embodiment.
Hydraulic schematic diagram as shown in Figure 2, the invention provides a kind of hydraulic oil cooling system of improvement, be arranged on and perform in the hydraulic system of the subtense angle of different work containing two or more, the action of subsystems is switched by switching valve 4, comprise controller, the radiator 9 be arranged in the oil return circuit of hydraulic system, start temperature detect switch (TDS) 7 and stop temperature detect switch (TDS) 8, start temperature detect switch (TDS) 7 for outputing signal when the temperature of oil return circuit rises to the first predefined value T1; Stop temperature detect switch (TDS) 8 for outputing signal when the temperature of oil return circuit drops to the second predefined value T2, wherein T2 is less than T1; Controller is used for after receiving the signal starting temperature detect switch (TDS) 7 output, and the heat radiation power that control radiator 9 adapts according to the subtense angle with work at present dispels the heat, and after receiving the signal stopping temperature detect switch (TDS) 8 to export, controls radiator 9 and closes.
The hydraulic system mentioned in this embodiment is used in various types of machinery, such as engineering machinery or Work machine etc., because these machinery need to perform different functions, thus needing, different hydraulic subsystems is set and controls different function modules respectively.In order to make the layout of hydraulic system compacter, these subtense angles generally can be made to share an oil pump device 2 and multi-way valve 3, and the action of subsystems is switched by switching valve 4, thus make can be separate between each function module.And in order to save pipeline, generally, the oil return of these subtense angles can be converged in an oil return circuit, then in hydraulic return fuel tank 1.
Hydraulic system operationally, can produce a large amount of heat, thus makes the temperature of hydraulic oil raise and cause penalty, and makes each subtense angle heating value operationally also differ larger due to the difference performed an action.In above-mentioned oil return circuit in hydraulic system, radiation system can be set, to take away the heat of hydraulic oil in reality.The present embodiment detects the temperature of hydraulic oil in real time by temperature detect switch (TDS), and temperature detect switch (TDS) is a kind of element detecting hydraulic fluid temperature, can realize when hydraulic fluid temperature reaches setting value that it has electrical signal to export, lower than during setting temperature without the function that electrical signal exports.Wherein, start temperature detect switch (TDS) 7 and stop temperature detect switch (TDS) 8 to trigger when the temperature of hydraulic oil reaches the first preset temperature T1 and the second preset temperature T2 respectively, and send electrical signal, with the startup and the stopping that making controller control radiator 9.
In the radiation system of prior art, radiator adopts fixing heat radiation power, and the temperature of the temperature and closedown radiator that start radiator is T1.And the hydraulic oil cooling system of the embodiment of the present invention, controller can after receiving the signal starting temperature detect switch (TDS) output, the heat radiation power that control radiator adapts according to the subtense angle with work at present dispels the heat, and that is can select different heat radiation power gears for subtense angles different in hydraulic system; And, the temperature T1 starting radiator and the temperature T2 closing radiator forms a temperature range, can effectively avoid closing when opening during the radiation system caused because the factors such as different engine, valve port opening and lift heavy amount cause each hydraulic subsystem heating value inconsistent, thus the reliability of heat radiation system and life-span, the structure of this radiation system is also comparatively compact in addition.
The work of radiation system of the present invention controls primarily of controller, in one embodiment, hydraulic oil cooling system control block diagram as shown in Figure 3, controller comprises: signal receiving unit 31, gear selection unit 32 and control command unit 33, wherein, signal receiving unit 31 is for receiving the signal starting temperature detect switch (TDS) 7 and stop temperature detect switch (TDS) 8 to export; Gear selection unit 32 is for determining corresponding heat radiation power gear according to the subtense angle of work at present; Control command unit 33 for receive at signal receiving unit 31 start temperature detect switch (TDS) 7 export signal after, dispel the heat according to the heat radiation power gear control radiator 9 that gear selection unit 32 is determined, and signal receiving unit 31 receive stop temperature detect switch (TDS) 8 export signal after, control radiator 9 close.
In order to the interval time making radiator 9 start and stop is longer, thus the further reliability of heat radiation system and life-span, in another embodiment, controller also comprises delay unit 34, delay unit 34 for receive at signal receiving unit 31 stop temperature detect switch (TDS) 8 to export signal after, after carrying out time delay according to preset time t, trigging control command unit 33 controls radiator 9 and closes again.
In the above-described embodiments, the crosslinked relation of each element of controller and outside and signal is also clearly shown in Figure 3, the signal that signal receiving unit 31 can receive start-up temperature switch 7 and stop thermal switch 8 to send; Gear selection unit 32 can receive the enable signal of the subtense angle corresponding to work at present, such as in hoist, hydraulic system comprises two subtense angles, be respectively hoisting operation hydraulic system 5 and travel operation hydraulic system 6, when both one of work time, will send the enable signal that this pattern is corresponding, gear selection unit 32 is upon receipt of the signal, just can know the subtense angle of work at present, more correspondingly determine the heat radiation power required for this subtense angle; Control command unit 33 can transmit control signal to radiator 9.
For the radiator 9 mentioned in each embodiment above, multiple way of realization can be had, as long as heat radiation power can be adjusted under the control of the controller, provide two embodiments to those skilled in the art's reference below.
In a first embodiment, radiator 9 comprises radiation fan and motor 10, and motor 10 is speed-adjustable motor, and the control command unit 33 in controller can send current controling signal to motor 10, thus drives radiation fan with certain rotary speed working.This embodiment adopts automatically controlled form to regulate the heat radiation power of radiator 9, and especially when system needs to dispel the heat with less power, motor 10 can work at the low rotational speed, and self can not produce higher heat, can reach good energy-saving effect.
In a second embodiment, radiator 9 comprises radiation fan, and the rotating speed of radiation fan is changed by the flow changing hydraulic system.Particularly, heat dissipation pump can be set in this hydraulic system, this heat dissipation pump is variable-displacement oil hydraulic pump, control command unit 33 in controller can transmit control signal to this heat dissipation pump, thus drive oil hydraulic pump to export corresponding flow, thus hydraulic oil is relied on to drive radiation fan with certain rotary speed working.
The present invention additionally provides a kind of hoist on the other hand, and comprise the hydraulic oil cooling system described in the various embodiments described above, hydraulic system comprises two subtense angles, and two subtense angles are respectively hoisting operation hydraulic system and 5 and travel operation hydraulic system 6.Due to motor in these two systems rotating speed, valve port opening and to bear load all different, cause this hydraulic system heating value when different function modules works inconsistent.In practice, travel operation hydraulic system 6 and require that the heat radiation power of radiator 9 is higher, and hoisting operation hydraulic system 5 requires that the heat radiation power of radiator 9 is relatively low.
Especially for medium and small tonnage telescopic arm crawler crane, owing to being subject to the restriction of complete vehicle structure, hoisting operation hydraulic system 5 and traveling operation hydraulic system 6 need shared a set of oil pump device 2 and multi-way valve 3, the situation that these two subtense angles share radiation system will be related to, if and adopt the mode of dispelling the heat with constant power in prior art will cause closing when opening during radiation system, thus affect the reliability of radiation system.And the hoist having installed hydraulic oil cooling system of the present invention can select different heat radiation power gears for subtense angles different in hydraulic system, the interval time that radiator 9 starts and stops can being extended, thus the reliability of heat radiation system and life-span.So just do not need each key element in frequent more heat exchange radiator 9, reduce maintenance cost, and this radiation system can be crane hydraulic system heat radiation effectively, makes the performance that this hydraulic system reaches more excellent, and then optimizes the properties of hoist and increase the service life.
In addition, further aspect of the present invention additionally provides a kind of hydraulic oil cooling system controlling method, and based on the hydraulic oil cooling system of the various embodiments described above, schematic flow sheet as shown in Figure 4, comprises the steps:
Step 101, controller judge the subtense angle of work at present, and such as, the subtense angle of work at present can to controller sending mode enable signal;
Step 102, startup temperature detect switch (TDS) 7 output signal when the temperature of oil return circuit rises to the first predefined value T1;
The heat radiation power that step 103, controller control radiator 9 adapts according to the subtense angle with work at present dispels the heat;
Step 104, stopping temperature detect switch (TDS) 8 output signal when the temperature of oil return circuit drops to the second predefined value T2;
Step 105, controller control radiator 9 and close.
Further, in the schematic flow sheet of the specific embodiment of shown in Fig. 5, this hydraulic oil cooling system controlling method also comprises:
Step 104 ', receive stop temperature detect switch (TDS) 8 export signal after, controller controls radiator 9 after carrying out time delay according to preset time t and closes.This step can be placed between step 104 and step 105 and perform.
Hydraulic oil cooling system controlling method of the present invention according to different subtense angles, can select corresponding heat radiation power, and when specific subsystem work, without the need to changing the heat radiation power of radiator.In other words, radiator is operationally in the several discrete gear corresponding with subtense angle quantity.The advantage of this embodiment is, controller can select the heat radiation power of radiator according to the demand of actual hydraulic pressure system, the waste of energy can not be caused, and the temperature T2 that radiator stops is lower than start-up temperature T1, again by program control radiator time-delay closing, close when opening when can effectively prevent radiation system like this, thus the reliability of heat radiation system and life-span.In addition, this controlling method is without the need to adjusting heat radiation power real-time dynamicly, make this controlling method comparatively simple, easy realization, occur that the possibility controlling error is less, thus practicability is comparatively strong, can meet the cooling requirements of hydraulic system, can reasonably control cost again, being particularly suitable in this kind of engineering machinery of hoist the temperature requirement of hydraulic oil is not hydraulic system strict especially.
In the above embodiments, schematic flow sheet as shown in Figure 5 and Figure 6, the step 103 that controller control radiator 9 carries out dispelling the heat according to the heat radiation power that the subtense angle with work at present adapts comprises:
Step 201, controller determine corresponding heat radiation power gear according to the subtense angle of work at present;
Step 202, after receiving and starting signal that temperature detect switch (TDS) 7 exports, controller controls radiator 9 according to the heat radiation power gear determined and dispels the heat.
Next for adopting motor 10 and changing the radiation system that hydraulic fluid flow rate drives radiation fan, its controlling method is described respectively in detail.
For the radiator 9 adopting motor 10 to drive radiation fan, motor 10 is speed-adjustable motor, just can be changed the heat radiation power of radiator 9 by the control electric current changing speed-adjustable motor.As shown in Figure 5, step 202 middle controller controls radiator 9 according to the heat radiation power gear determined and carries out heat radiation and comprise:
Step 301, controller export the control electric current for drive motor 10 according to the heat radiation power gear determined;
Step 302, based on control electric current, motor 10 drives radiation fan work.
For the radiator 9 being driven radiation fan by hydraulic oil, the heat radiation power of radiator 9 just can be changed by the flow changing hydraulic oil.As shown in Figure 6, step 202 middle controller controls radiator 9 according to the heat radiation power gear determined and carries out heat radiation and comprise:
Step 401, controller export the control signal for changing hydraulic fluid flow rate in hydraulic system according to the heat radiation power gear determined;
Step 402, drive radiation fan work by hydraulic oil in hydraulic system.
The embodiment of each relevant controlling method provided above, also can reach the technique effect same with corresponding hydraulic oil cooling system.Owing to having carried out detailed analysis and description to the embodiment of each radiation system above, just repeat no more here, those skilled in the art can use for reference mutually.
More deep understanding is had to design of the present invention in order to make those skilled in the art, provide this radiation system below and be applied in specific embodiment on hoist, and the schematic flow sheet shown in the hydraulic system principle figure shown in composition graphs 2 and Fig. 5, describe hydraulic oil cooling system of the present invention and controlling method in detail.
When hoist works, the working state of hydraulic system can be detected in real time by switching valve 4, in the process that hoisting operation hydraulic system 5 works, when the operating temperature of oil return circuit rises to T1, start temperature detect switch (TDS) 7 and export electrical signal, controller determines the heat radiation power P1 that hoisting operation hydraulic system 5 needs, and the maximum current exporting to motor 10 is I1, the rotating speed of corresponding radiation fan is n1, and then radiator 9 is dispelled the heat with heat radiation power P1; In the process travelling operation hydraulic system 6 work, when the operating temperature of oil return circuit reaches T1, start temperature detect switch (TDS) 7 and export electrical signal, controller determines the heat radiation power P2 travelling operation hydraulic system 6 and need, and the maximum current exporting to motor 10 is I2, the rotating speed of corresponding radiation fan is n2, and then radiator 9 is dispelled the heat with heat radiation power P2.On the basis ensureing system compactness, pass through program control, adopt variable current control motor 10 to draw the method for the different heat radiation power of radiator 9, effectively can solve the different demands of hoisting operation hydraulic system 5 and traveling operation hydraulic system 6 pairs of heat radiation powers.
When the temperature of oil return circuit drops to T2 (T2<T1), temperature detect switch (TDS) 8 is stopped to export electrical signal, program control radiator 9 time-delay closing in controller.Because the stopping temperature T2 of radiator 9 is less than start-up temperature T1, and there is time-delay closing, namely, when system temperature arrives T2 (setting temperature that radiator 9 stops), radiator 9 will continue according to preset time t work, this makes it possible to reliability and the life-span of heat radiation system effectively.
Above a kind of hydraulic oil cooling system provided by the present invention, hoist and hydraulic oil cooling system controlling method are described in detail.Apply specific embodiment herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (11)
1. a hydraulic oil cooling system, it is characterized in that, be arranged on and perform in the hydraulic system of the subtense angle of different work containing two or more, the action of subtense angle described in each is switched by switching valve (4), comprise controller, the radiator (9) be arranged in the oil return circuit of described hydraulic system, start temperature detect switch (TDS) (7) and stopping temperature detect switch (TDS) (8)
Described startup temperature detect switch (TDS) (7) is for outputing signal when the temperature of described oil return circuit rises to the first predefined value T1;
Described stopping temperature detect switch (TDS) (8) is for outputing signal when the temperature of described oil return circuit drops to the second predefined value T2, and wherein T2 is less than T1;
Described controller is used for after receiving the signal that described startup temperature detect switch (TDS) (7) exports, control the heat radiation power that described radiator (9) adapts according to the described subtense angle with work at present to dispel the heat, after receiving the signal that described stopping temperature detect switch (TDS) (8) exports, control described radiator (9) and close.
2. hydraulic oil cooling system according to claim 1, is characterized in that, described controller comprises:
Signal receiving unit (31), for receiving the signal that described startup temperature detect switch (TDS) (7) and described stopping temperature detect switch (TDS) (8) export;
Gear selection unit (32), for determining corresponding heat radiation power gear according to the described subtense angle of work at present;
Control command unit (33), for receive signal that described startup temperature detect switch (TDS) (7) exports at described signal receiving unit (31) after, the heat radiation power gear determined according to described gear selection unit (32) controls described radiator (9) and dispels the heat, and after described signal receiving unit (31) receives the signal that described stopping temperature detect switch (TDS) (8) exports, control described radiator (9) and close.
3. hydraulic oil cooling system according to claim 1, it is characterized in that, described controller also comprises delay unit (34), described delay unit (34), for after the signal that receives described stopping temperature detect switch (TDS) (8) at described signal receiving unit (31) and export, triggers described control command unit (33) again control described radiator (9) and close according to preset time t after carrying out time delay.
4. hydraulic oil cooling system according to claim 1, it is characterized in that, described radiator (9) comprises radiation fan and motor (10), described motor (10) is speed-adjustable motor, can change the rotating speed of described radiation fan under the control of described controller.
5. hydraulic oil cooling system according to claim 1, is characterized in that, described radiator (9) comprises radiation fan, and the rotating speed of described radiation fan is changed by the flow changing described hydraulic system.
6. a hoist, is characterized in that, comprise the arbitrary described hydraulic oil cooling system of Claims 1 to 5, described hydraulic system comprises two described subtense angles, and two described subtense angles are respectively hoisting operation hydraulic system and travel operation hydraulic system.
7. a hydraulic oil cooling system controlling method, is characterized in that, based on the arbitrary described hydraulic oil cooling system of Claims 1 to 5, comprising:
Described controller judges the described subtense angle of work at present;
Described startup temperature detect switch (TDS) (7) outputs signal when the temperature of described oil return circuit rises to the first predefined value T1;
Described controller controls the heat radiation power that described radiator (9) adapts according to the described subtense angle with work at present and dispels the heat;
Described stopping temperature detect switch (TDS) (8) outputs signal when the temperature of described oil return circuit drops to the second predefined value T2;
Described controller controls described radiator (9) and closes.
8. hydraulic oil cooling system controlling method according to claim 7, is characterized in that, described controller controls the step that described radiator (9) carries out dispelling the heat according to the heat radiation power that the described subtense angle with work at present adapts and comprises:
Described controller determines corresponding heat radiation power gear according to the described subtense angle of work at present;
After receiving the signal that described startup temperature detect switch (TDS) (7) exports, described controller controls described radiator (9) according to the heat radiation power gear determined and dispels the heat.
9. hydraulic oil cooling system controlling method according to claim 7, it is characterized in that, also comprise: after receiving the signal that described stopping temperature detect switch (TDS) (8) exports, described controller controls described radiator (9) and closes after carrying out time delay according to preset time t.
10. hydraulic oil cooling system controlling method according to claim 8, it is characterized in that, described radiator (9) comprises radiation fan and motor (10), described motor (10) is speed-adjustable motor, and described controller controls according to the heat radiation power gear determined the step that described radiator (9) carries out dispelling the heat and comprises:
Described controller exports the control electric current for driving described motor (10) according to the heat radiation power gear determined;
Based on described control electric current, described motor (10) drives described radiation fan work.
11. hydraulic oil cooling system controlling methods according to claim 8, it is characterized in that, the rotating speed of described radiation fan is changed by the flow changing described hydraulic system, and described controller controls according to the heat radiation power gear determined the step that described radiator (9) carries out dispelling the heat and comprises:
Described controller exports the control signal for changing hydraulic fluid flow rate in described hydraulic system according to the heat radiation power gear determined;
Described radiation fan work is driven by the hydraulic oil in described hydraulic system.
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| CN201510454501.1A CN105156405B (en) | 2015-07-29 | 2015-07-29 | Hydraulic oil cooling system, crane and hydraulic oil cooling system control method |
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| CN201510454501.1A CN105156405B (en) | 2015-07-29 | 2015-07-29 | Hydraulic oil cooling system, crane and hydraulic oil cooling system control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669083A (en) * | 2020-06-17 | 2020-09-15 | 北京经纬恒润科技有限公司 | Low-temperature starting method and device for oil pump motor |
| CN112104160A (en) * | 2020-11-11 | 2020-12-18 | 英轩重工有限公司 | Cooling device of loader and loader |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011769A (en) * | 2010-12-10 | 2011-04-13 | 徐州重型机械有限公司 | Wheeled crane and hydraulic oil cooling system and control method thereof |
| CN102734273A (en) * | 2012-06-15 | 2012-10-17 | 三一重机有限公司 | Oil temperature control device, hydraulic system and oil temperature control method thereof |
| CN103062162A (en) * | 2012-12-27 | 2013-04-24 | 三一重工股份有限公司 | Hydraulic oil radiating system and engineering machinery |
| CN203488484U (en) * | 2013-09-03 | 2014-03-19 | 徐州重型机械有限公司 | Crane and hydraulic system thereof |
| CN104071698A (en) * | 2014-07-18 | 2014-10-01 | 徐州重型机械有限公司 | Crane hydraulic oil temperature control system, method and crane |
| CN203962566U (en) * | 2014-06-16 | 2014-11-26 | 安徽星马专用汽车有限公司 | A kind of pump truck temperature controlling device and pump truck |
| US20150013321A1 (en) * | 2012-02-17 | 2015-01-15 | Construction Tools Pc Ab | Separate hydraulic unit with cooling of oil |
-
2015
- 2015-07-29 CN CN201510454501.1A patent/CN105156405B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011769A (en) * | 2010-12-10 | 2011-04-13 | 徐州重型机械有限公司 | Wheeled crane and hydraulic oil cooling system and control method thereof |
| US20150013321A1 (en) * | 2012-02-17 | 2015-01-15 | Construction Tools Pc Ab | Separate hydraulic unit with cooling of oil |
| CN102734273A (en) * | 2012-06-15 | 2012-10-17 | 三一重机有限公司 | Oil temperature control device, hydraulic system and oil temperature control method thereof |
| CN103062162A (en) * | 2012-12-27 | 2013-04-24 | 三一重工股份有限公司 | Hydraulic oil radiating system and engineering machinery |
| CN203488484U (en) * | 2013-09-03 | 2014-03-19 | 徐州重型机械有限公司 | Crane and hydraulic system thereof |
| CN203962566U (en) * | 2014-06-16 | 2014-11-26 | 安徽星马专用汽车有限公司 | A kind of pump truck temperature controlling device and pump truck |
| CN104071698A (en) * | 2014-07-18 | 2014-10-01 | 徐州重型机械有限公司 | Crane hydraulic oil temperature control system, method and crane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669083A (en) * | 2020-06-17 | 2020-09-15 | 北京经纬恒润科技有限公司 | Low-temperature starting method and device for oil pump motor |
| CN112104160A (en) * | 2020-11-11 | 2020-12-18 | 英轩重工有限公司 | Cooling device of loader and loader |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105156405B (en) | 2019-03-26 |
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