CN214221688U - Hydraulic independent heat dissipation control loop - Google Patents
Hydraulic independent heat dissipation control loop Download PDFInfo
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- CN214221688U CN214221688U CN202120285730.6U CN202120285730U CN214221688U CN 214221688 U CN214221688 U CN 214221688U CN 202120285730 U CN202120285730 U CN 202120285730U CN 214221688 U CN214221688 U CN 214221688U
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Abstract
The utility model discloses an independent heat dissipation control circuit of hydraulic pressure, including ECU controller and hydraulic tank, be provided with out the oil pipe way on hydraulic tank, the link that goes out the oil pipe way and hydraulic tank is equipped with the oil absorption filter that is located hydraulic tank inside, it is provided with the cooling motor that is connected with the ECU controller to go out the oil pipe way other end, be provided with the cooling pump on the body that goes out the oil pipe way, it is provided with the control valve that cooperatees with the ECU controller on the play oil pipe way that is located between cooling pump and the cooling motor, it is provided with the second intercommunication pipeline of connecting the oil tank on the play oil pipe way between control valve and the cooling pump, be provided with the temperature sensor who detects out oil pipe way hydraulic oil temperature on the ECU controller. The utility model discloses effectively solved the very slow problem of hydraulic oil temperature rise, and effectively avoided hydraulic oil more viscous when the temperature is low, the phenomenon that the partial action lags will take place for the excavator complete machine.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic oil heat dissipation, a hydraulic pressure independent heat dissipation control circuit is related to.
Background
Excavator hydraulic pressure more than 40 tons generally adopts independent radiating mode, and there are two kinds independent radiating, one kind is electric drive fan, one kind is hydraulic drive fan, to hydraulic drive fan, its control circuit generally is that the cooling pump inhales oil from the oil tank, through the cooling motor, the cooling motor passes through proportional solenoid valve control hydraulic oil flow size, and then control cooling motor rotational speed to carry out proportional control to the fan rotational speed that the cooling motor drove.
In the prior art, when an engine works normally, a cooling pump starts to work, a corresponding cooling motor also starts to work, and the rotating speed of a fan is generally between 500rpm and 2000 rpm. However, when the ambient temperature is particularly low, the hydraulic oil temperature is also relatively low. Because the fan works all the time, the temperature rise of the hydraulic oil is very slow, and the hydraulic oil is viscous when the temperature is low, so that the whole excavator has the phenomenon of partial action lag.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a can solve when ambient temperature is low, the very slow independent heat dissipation control circuit of hydraulic oil temperature rise when the excavator moves.
The utility model discloses following technical scheme of mainly adopting includes ECU controller and hydraulic tank, is provided with out the oil pipe way on hydraulic tank, and its structural feature is that the link that goes out oil pipe way and hydraulic tank is equipped with the oil absorption filter that is located hydraulic tank inside, goes out the oil pipe way other end and is provided with the cooling motor that is connected with the ECU controller, be provided with the cooling pump on the body that goes out the oil pipe way, be located the oil pipe between cooling pump and the cooling motor on the way be provided with ECU controller matched with control valve, be located the second intercommunication pipeline that is provided with on the play oil pipe way between control valve and the cooling pump and is connected hydraulic tank, be provided with the temperature sensor who detects out oil pipe way hydraulic oil temperature on the ECU controller.
The cooling motor comprises a hydraulic motor arranged at one end of an oil outlet pipeline, an oil return pipeline connected with a hydraulic oil tank is arranged on the hydraulic motor, a cooling fan is arranged on a driving shaft of the hydraulic motor, a first communication pipeline is connected between the oil outlet pipeline and the oil return pipeline, a proportional electromagnetic valve connected with an ECU controller is arranged on the first communication pipeline, the proportional electromagnetic valve is controlled by the ECU controller, the rotating speed of the cooling fan can be effectively controlled, and the heat dissipation efficiency of the cooling fan is improved according to the change of temperature.
A third communicating pipeline is connected between the two pipelines of the oil outlet pipeline and the oil return pipeline close to the hydraulic motor, a one-way valve for controlling hydraulic oil to flow from the oil return pipeline to the oil outlet pipeline is arranged on the third communicating pipeline, and the pressure difference between the oil outlet pipeline and the oil return pipeline can be effectively ensured by the arrangement of the third communicating pipeline and the one-way valve, so that the rotation of the hydraulic motor is ensured.
The control valve is a two-position two-way valve arranged on the oil outlet pipeline.
And an overflow valve is arranged on the second communicating pipeline, and the arrangement of the overflow valve preferentially ensures that the hydraulic oil in the oil outlet pipeline flows back to the hydraulic oil tank when the control valve is closed.
The cooling fan is an air suction fan, the cooling fan is close to a hydraulic oil cooler matched with the hydraulic oil tank in the excavator, and the hydraulic oil is sucked from the outer side of the cooler through the fan to take away heat in the cooler, so that cooling of the hydraulic oil is realized.
The beneficial effects of the utility model reside in that: the utility model discloses an increase a series of hydraulic component and electrical components and control logic, the engine starts the back when having realized the low temperature, independent hydraulic motor does not change, whole work circuit does not dispel the heat, thereby realize that the hydraulic oil of oil pipe way and second intercommunication pipeline heaies up rapidly, until reaching preset value's purpose, effectively solved the very slow problem of hydraulic oil temperature rise, and effectively avoided hydraulic oil more viscous when the temperature is low, partial action hysteresis's phenomenon will take place for the complete machine.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, are within the protection scope of the present invention, and furthermore, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to the attached drawings, the utility model comprises an ECU controller 1 and a hydraulic oil tank 2 for controlling each circuit of the excavator, wherein the ECU controller 1 is a control panel of the excavator body and controls the switches of other devices, the structure and the circuit connection relationship are known structures, and the details are not repeated; an oil outlet pipeline 3 is arranged on a hydraulic oil tank 2, an oil suction filter 4 positioned in the hydraulic oil tank 2 is arranged at the connecting end of the oil outlet pipeline 3 and the hydraulic oil tank 2, a cooling motor connected with an ECU controller 1 is arranged at the other end of the oil outlet pipeline 3, the cooling motor comprises a hydraulic motor 9 arranged at one end of the oil outlet pipeline 3, an oil return pipeline 10 connected with the hydraulic oil tank 2 is arranged on the hydraulic motor 9, a cooling fan 11 is arranged on a driving shaft of the hydraulic motor 9, when in design, the hydraulic motor 9 is respectively connected on the oil outlet pipeline 3 and the oil return pipeline 10, the hydraulic motor 9 is driven to work through the pressure difference between the oil outlet pipeline 3 and the oil return pipeline 10, the cooling fan 11 arranged on the hydraulic motor 9 is a suction fan, and the cooling fan 11 is arranged close to a hydraulic oil cooler 17 matched with the hydraulic oil tank 2 in an excavator, the hydraulic oil cooler 17 can be cooled by the rotation of a self-suction fan, a first communication pipeline 12 is connected between the oil outlet pipeline 3 and the oil return pipeline 10, a proportional electromagnetic valve 13 connected with the ECU controller 1 is arranged on the first communication pipeline 12, the ECU controller 1 controls the proportional electromagnetic valve 13 to adjust the oil pressure between the oil outlet pipeline 3 and the oil return pipeline 10 so as to control the rotating speed of the hydraulic motor 9, a third communication pipeline 14 is connected between the two pipelines of the oil outlet pipeline 3 and the oil return pipeline 10 close to the hydraulic motor 9, the third communication pipeline 14 is arranged on the pipe body of the two pipelines between the proportional electromagnetic valve 13 and the hydraulic motor 9, a one-way valve 15 for controlling the hydraulic oil to flow from the oil return pipeline 10 to the oil outlet pipeline 3 is arranged on the third communication pipeline 14, and in the design, the one-way valve 15 arranged on the third communication pipeline 14 can facilitate the hydraulic motor 9 to be cooled when the oil supply is suddenly lost, the motor can slowly stop rotating due to the inertia effect so as to ensure the work under the safe pressure.
The cooling pump 5 which absorbs oil from the hydraulic oil tank 2 is arranged on the pipe body of the oil outlet pipeline 3 which is close to the hydraulic oil tank 2, the control valve 6 of the ECU controller 1 is arranged on the oil outlet pipeline 3 which is positioned between the cooling pump 5 and the cooling motor, when the design is carried out, the control valve 6 is a two-position two-way valve, the flow direction of the hydraulic oil in the oil outlet pipeline 3 can be effectively controlled by controlling the two-position two-way valve through the ECU controller 1, the second communicating pipeline 7 which is connected with the oil tank is arranged on the oil outlet pipeline 3 which is positioned between the control valve 6 and the cooling pump 5, the overflow valve 16 which controls the flow of the hydraulic oil is arranged on the second communicating pipeline 7, when the two-position two-way valve is closed, the hydraulic oil enters the second communicating pipeline 7 along the oil outlet pipeline 3 and flows into the hydraulic oil tank 2, so that the function of quickly raising the temperature of the hydraulic oil when the cooling motor does not work and the cooling circuit is independent.
The ECU controller 1 is provided with a temperature sensor 8 for detecting the temperature of the hydraulic oil in the oil pipeline 3, the temperature sensor 8 can be matched with the control valve 6 according to the recorded set value to realize the function of mutual switching between different hydraulic oil pipelines when the temperature is different, of course, in order to prevent the leakage of the hydraulic oil of the hydraulic motor 9, the hydraulic motor 9 is provided with an overflow pipeline 18 connected with the hydraulic oil tank 2 and an overflow valve 16 arranged on the pipeline.
When the engine is in use, the input value of the oil temperature sensor is set according to the working environment, if the input value is set to be 40 ℃, when the engine normally runs, the oil temperature sensor firstly detects the temperature of hydraulic oil, when the temperature is lower than 40 ℃, the ECU controller 1 controls the electromagnetic valve in the two-position two-way valve to be electrified, the two-position two-way electromagnetic valve is reversed, the oil path from the cooling pump 5 to the cooling motor is cut off, the oil path of the cooling pump 5 directly returns to the hydraulic oil tank 2 through the second communication pipeline 7, the oil path is shortened, the overflow valve 16 works, and the temperature of the hydraulic oil of the cooling pump 5 is rapidly increased; meanwhile, as the oil outlet pipeline 3 of the cooling motor is cut off, no hydraulic oil enters the cooling motor at this time, the cooling motor is in a stop state, the fan is also in a stop state, other hydraulic oil in action directly returns to the oil tank through the hydraulic oil cooler 17, so that the hydraulic oil is quickly heated up, when the temperature of the hydraulic oil reaches 40 ℃, the ECU controller 1 energizes the electromagnetic valve in the two-position two-way valve, the hydraulic oil enters the cooling motor through the oil outlet pipeline 3 to drive the cooling fan 11 to rotate so as to realize the cooling operation of the hydraulic oil cooler 17, and the proportional electromagnetic valve 13 controlled by the ECU controller 1 is matched with the oil temperature sensor to control the rotating speed of the cooling fan 11, for example, when the temperature of the hydraulic oil is lower than a certain value: when the temperature of the hydraulic oil is higher than a certain value, the rotating speed of the fan is increased according to the temperature rise proportion, and the purpose of cooling the oil temperature is achieved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides an independent heat dissipation control circuit of hydraulic pressure, includes ECU controller (1) and hydraulic tank (2), is provided with oil outlet pipeline (3) on hydraulic tank (2), its characterized in that: the oil outlet pipeline (3) is provided with an oil absorption filter (4) located inside the hydraulic oil tank (2) at the connecting end of the hydraulic oil tank (2), the other end of the oil outlet pipeline (3) is provided with a cooling motor connected with the ECU controller (1), a cooling pump (5) is arranged on the pipe body of the oil outlet pipeline (3), a control valve (6) matched with the ECU controller (1) is arranged on the oil outlet pipeline (3) located between the cooling pump (5) and the cooling motor, a second communication pipeline (7) connected with the hydraulic oil tank (2) is arranged on the oil outlet pipeline (3) located between the control valve (6) and the cooling pump (5), and a temperature sensor (8) for detecting the temperature of the hydraulic oil in the oil outlet pipeline (3) is arranged on the ECU controller (1).
2. The hydraulic independent heat dissipation control circuit of claim 1, wherein: the cooling motor comprises a hydraulic motor (9) arranged at one end of an oil outlet pipeline (3), an oil return pipeline (10) connected with a hydraulic oil tank (2) is arranged on the hydraulic motor (9), a cooling fan (11) is arranged on a driving shaft of the hydraulic motor (9), a first communication pipeline (12) is connected to a pipe body between the oil outlet pipeline (3) and the oil return pipeline (10), and a proportional electromagnetic valve (13) connected with the ECU controller (1) is arranged on the first communication pipeline (12).
3. The hydraulic independent heat dissipation control circuit of claim 2, wherein: a third communication pipeline (14) is connected between the oil outlet pipeline (3) and the oil return pipeline (10) close to the hydraulic motor (9), and a one-way valve (15) for controlling hydraulic oil to flow from the oil return pipeline (10) to the oil outlet pipeline (3) is arranged on the third communication pipeline (14).
4. The hydraulic independent heat dissipation control circuit of claim 1, wherein: the control valve (6) is a two-position two-way valve arranged on the oil outlet pipeline (3).
5. The hydraulic independent heat dissipation control circuit of claim 1, wherein: an overflow valve (16) is arranged on the second communication pipeline (7).
6. The hydraulic independent heat dissipation control circuit of claim 2, wherein: the cooling fan (11) is an air suction fan, and the cooling fan (11) is close to a hydraulic oil cooler (17) matched with the hydraulic oil tank (2) in the excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285730.6U CN214221688U (en) | 2021-02-02 | 2021-02-02 | Hydraulic independent heat dissipation control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285730.6U CN214221688U (en) | 2021-02-02 | 2021-02-02 | Hydraulic independent heat dissipation control loop |
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| Publication Number | Publication Date |
|---|---|
| CN214221688U true CN214221688U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120285730.6U Active CN214221688U (en) | 2021-02-02 | 2021-02-02 | Hydraulic independent heat dissipation control loop |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906389A (en) * | 2023-09-11 | 2023-10-20 | 甘肃送变电工程有限公司 | Hydraulic oil temperature control system and control method |
-
2021
- 2021-02-02 CN CN202120285730.6U patent/CN214221688U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906389A (en) * | 2023-09-11 | 2023-10-20 | 甘肃送变电工程有限公司 | Hydraulic oil temperature control system and control method |
| CN116906389B (en) * | 2023-09-11 | 2023-11-14 | 甘肃送变电工程有限公司 | Hydraulic oil temperature control system and control method |
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Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |