CN204003552U - Hydraulic oil radiation fan speed-adjusting and control system and engineering machinery - Google Patents
Hydraulic oil radiation fan speed-adjusting and control system and engineering machinery Download PDFInfo
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- CN204003552U CN204003552U CN201420435855.2U CN201420435855U CN204003552U CN 204003552 U CN204003552 U CN 204003552U CN 201420435855 U CN201420435855 U CN 201420435855U CN 204003552 U CN204003552 U CN 204003552U
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Abstract
The utility model proposes a kind of hydraulic oil radiation fan speed-adjusting and control system and engineering machinery, this hydraulic oil radiation fan speed-adjusting and control system comprises oil circuit control, temperature transducer and the chassis controller of radiation fan, wherein, in oil circuit control, be provided with electric proportional pressure control valve, electric proportional pressure control valve is used for according to the gear motor rotating speed of the current value ratio control radiation fan of input; Temperature transducer is for detection of the real time temperature value of hydraulic oil, and generates temperature value signal; Chassis controller is connected with the electric proportional pressure control valve in temperature transducer and oil circuit control, receive temperature value signal, and be greater than after the first predetermined temperature in the indicated real time temperature value of temperature value signal, become the current value of predetermined ratio with real time temperature value to electric proportional pressure control valve output; Make radiation fan can be after hydraulic fluid temperature exceedes uniform temperature according to a certain percentage speed slowly promote rotating speed, can not cause large impact to the flat key of gear motor, protection motor flat key, also can reduce noise.
Description
Technical field
The utility model relates to technical field of engineering machinery, relates in particular to a kind of hydraulic oil radiation fan speed-adjusting and control system and engineering machinery.
Background technique
At present, existing engineering machinery roughly can be summarized as three types by the loose fan speed-regulating control system of hydraulic oil.One, hydraulic oil cooling system is integrated among engine water radiation system, and radiation fan is directly by engine-driving; Its two, hydraulic oil radiation fan is determined rotation speed operation, rotating speed is only supplied with hydraulic fluid flow rate and gear motor with gear pump, and to demarcate discharge capacity relevant, irrelevant with hydraulic fluid temperature; Its three, the hydraulic oil rotation speed of the fan point two-stage control (one-level: rotating speed is zero of faling apart; Secondary: rotate at full speed).
For the third situation, aspect hydraulic oil radiating fan rotation speed, this system hydraulic fluid temperature below setting temperature time hydraulic oil radiation fan be failure to actuate, during higher than setting temperature, hydraulic oil radiating fan rotation speed directly rises to maximum speed from zero, like this because the rotating speed of hydraulic oil radiation fan is undergone mutation and easily causes its motor flat key fracture defect; And because hydraulic oil radiation fan rotates at full speed, noise reaches maximum value, noise remains on compared with high-decibel always, and surrounding environment is affected greatly.
In rotation process, easily causing its fracture of motor flat key and larger problem of noise at full speed for existing hydraulic oil radiation fan, is those skilled in the art's technical problems urgently to be resolved hurrily.
Model utility content
In rotation process, easily cause its fracture of motor flat key and larger problem of noise at full speed in order to overcome existing hydraulic oil radiation fan, the utility model provides a kind of hydraulic oil radiation fan speed-adjusting and control system and engineering machinery.
A kind of hydraulic oil radiation fan speed-adjusting and control system that the utility model provides, comprises the oil circuit control of radiation fan,
In described oil circuit control, be provided with electric proportional pressure control valve, described electric proportional pressure control valve is for regulating the gear motor hydraulic fluid flow rate that enters described radiation fan according to the current value ratio of input;
Temperature transducer, is connected with described hydraulic oil, for detection of the real time temperature value of described hydraulic oil, and generates temperature value signal;
Chassis controller, be connected with described temperature transducer and described electric proportional pressure control valve, receive described temperature value signal, and be greater than after the first predetermined temperature in the indicated real time temperature value of described temperature value signal, become the current value of predetermined ratio with described real time temperature value to described electric proportional pressure control valve output.
Further, be also provided with solenoid directional control valve in described oil circuit control, described solenoid directional control valve for controlling the gear motor forward or reverse of described radiation fan after input commutation voltage;
Described chassis controller is also provided with the commutation control unit being connected with described solenoid directional control valve;
Described commutation control unit is provided with timing module and time delay module, described timing module generates start signal for after first scheduled time of interval, and described start signal is sent to described time delay module and described commutation control unit, described commutation control unit receives the backward described solenoid directional control valve of described start signal and exports described commutation voltage;
Described time delay module is connected with described timing module, described delay unit is for accepting after described start signal, after second scheduled time of time delay, send shutdown signal to commutation control unit, described commutation control unit stops exporting described commutation voltage to described solenoid directional control valve after receiving described shutdown signal.
Further, described chassis controller is also greater than after the second predetermined temperature in the indicated real time temperature value of described temperature value signal, is zero to the described current value of described electric proportional pressure control valve output.
Further, on the circuit that described chassis controller is connected with described electric proportional pressure control valve, be provided with the first electromagnetic switch valve; And/or,
On the circuit that described commutation control unit is connected with described solenoid directional control valve, be provided with the second electromagnetic switch valve.
Further, described solenoid directional control valve comprises two working staties: the first working state and the second working state;
Under described the first working state, the first filler opening of described solenoid directional control valve is communicated with its first oil outlet, and the second filler opening of described solenoid directional control valve is communicated with its second oil outlet;
Under described the second working state, described the first filler opening is communicated with described the second oil outlet, and described the second filler opening is communicated with described the first oil outlet.
Model utility the utility model also provides a kind of engineering machinery, and described engineering machinery is provided with above-mentioned hydraulic oil radiation fan speed-adjusting and control system.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is by regulating electric proportional pressure control valve openings of sizes ratio to regulate the hydraulic fluid flow rate of the gear motor that enters radiation fan; thereby adjusting gear motor rotary speed; make radiation fan after hydraulic fluid temperature exceedes uniform temperature, can slowly promote according to a certain percentage rotating speed; can not cause king-sized impact to the flat key of gear motor; protection motor flat key, and radiation fan is in the situation that beginning rotating speed is not high; noise is little, also can play the effect of certain minimizing noise.
Further, the utility model is also controlled radiation fan blowback a period of time after time delay certain hour is set, after radiation fan running a period of time, heat-dissipating fan antiport is once like this, continue afterwards to run well, to reach the effect of blowback dust, blow the foreign material that are trapped on radiator off rear continuation heat radiation, improve radiating effect.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Figure 1 shows that the hydraulic principle schematic diagram of concrete application in the utility model embodiment;
Figure 2 shows that hydraulic fluid temperature and the current value relation table that inputs to electric proportional pressure control valve in the utility model embodiment.
Description of reference numerals:
1, electric proportional pressure control valve; 2, gear motor; 3, temperature transducer; 4, solenoid directional control valve; 5, the first electromagnetic switch valve; 6, the second electromagnetic switch valve; 7, gear pump; 8, oil return piece.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that, in the situation that not conflicting, the feature in the utility model embodiment and embodiment can combine mutually.
The utility model embodiment easily causes its fracture of motor flat key and larger problem of noise in rotation process at full speed for existing hydraulic oil radiation fan; And existing hydraulic oil radiation fan only has the do not reverse function of dedusting of forward heat radiation; The utility model embodiment provides a kind of hydraulic oil radiation fan speed-adjusting and control system, this speed-adjusting and control system rotates by the gear that makes electricity consumption proportional pressure control valve control radiation fan, then by changing in real time the hydraulic fluid flow rate of supply gear motor, and then regulate in real time the rotational velocity of radiation fan, realize the high rotating speed of radiation fan high temperature, the slow-revving ideal energy saving noise reduction of low temperature state.
Further, in the utility model embodiment, in chassis controller, can also be provided with commutation control unit, can after gear motor forward a period of time of radiation fan, reverse for tens seconds by control gear motor, realize radiation fan intermittently reversing function, radiation fan reversion can reach the effect of blowback dedusting, improves the radiating efficiency of radiation fan.
Be specially, as depicted in figs. 1 and 2, this hydraulic oil radiation fan speed-adjusting and control system, comprises oil circuit control, chassis controller and the temperature transducer 3 of radiation fan; This oil circuit control is by gear pump 7 fuel feeding, oil-feed oil circuit enters the filler opening of the gear motor of radiation fan by the A mouth of solenoid directional control valve 4, the oil outlet of gear motor 2 flows into solenoid directional control valve 4 by B mouth and then flows into oil return circuit, is provided with one-way valve the last oil return piece 8 that flows on oil return circuit; The filler opening that is also connected electric proportional pressure control valve 1 on the oil circuit between oil-feed oil circuit and the solenoid directional control valve of oil circuit control, the oil outlet of electric proportional pressure control valve 1 is connected on the oil circuit between one-way valve and oil return piece 8.
The automatically controlled end of electricity proportional pressure control valve 1 is by the first electromagnetic switch valve 5 connecting base plate controllers; Electricity proportional pressure control valve 1 is controlled its flow-off according to the current value size of its automatically controlled end input and is opened size, in the time not needing radiation fan work, gear motor 2 is state of rest, and electric proportional pressure control valve 1 is in full-gear, now, chassis controller is inputted the load current value of electric proportional pressure control valve 1.In the situation that needs gear motor 2 rotates, reduce the current value of the electric proportional pressure control valve 1 of input according to certain ratio, the flow-off of electric proportional pressure control valve 1 is diminished, the hydraulic oil of gear pump 7 just can gear motor 2 slowly rotate, the flow-off of electricity proportional pressure control valve 1 is less, the hydraulic fluid flow rate that enters gear motor 2 is just larger, and gear pump 7 just can gear motor 2 rotate faster; There is no input current at electric proportional pressure control valve 1, current value is 1 o'clock, and gear motor 2 rotates at full speed, drives radiation fan at full throttle to rotate heat radiation.
Electricity proportional pressure control valve 1, by above-mentioned method, is regulated the hydraulic fluid flow rate of the gear motor 2 of radiation fan in certain inversely proportional mode by the current value of its input, and then regulate the rotating speed of radiation fan.
Temperature transducer 3 is connected with hydraulic oil for detection of the real time temperature value 3 of hydraulic oil, and generate temperature value signal, and temperature value signal is transferred to chassis controller, chassis controller receives temperature value signal, and be greater than after the first predetermined temperature in the indicated real time temperature value of temperature value signal, become the current value of predetermined ratio with real time temperature value to electric proportional pressure control valve 1 output.Because gear motor 2 initial velocities are zero, and along with the rising of hydraulic fluid temperature value lifting speed, so proportional pressure control valve 1 is its rated current at original state current value, reach after the first predetermined temperature in hydraulic fluid temperature value, the current value of ratio that proportional pressure control valve 1 is exported and real time temperature value is inversely proportional to, the current value that proportional pressure control valve 1 is exported reduces, and gear motor 2 rotating speeds promote; As shown in Figure 2, this first predetermined temperature is 25 degree.
Further, when the hydraulic fluid temperature detecting at temperature transducer reaches the second predetermined temperature, the second predetermined temperature is greater than the first predetermined temperature, need radiation fan to rotate at full speed, now, proportional pressure control valve 1 need to be closed completely, so its input current value is null value, gear motor 2 rotates at full speed, and as shown in Figure 2, this second predetermined temperature is 90 degree.
Can make the electrodeless adjusting of gear motor self adaption by the hydraulic circuit of above-mentioned radiation fan and the proportional pressure control valve 1 of chassis controller control, thereby reduce the impact to gear motor 2 flat keys, can also reduce noise pollution.Below in conjunction with hydraulic schematic diagram in Fig. 1, explain in detail interval inversion structures and the principle of hydraulic oil radiation fan.
As shown in Figure 1, the solenoid directional control valve 4 in oil circuit control is bi-bit bi-pass solenoid directional control valve, and under its first state, filler opening is connected with gear motor 2 first filler openings of radiation fan by A mouth, and oil outlet is connected with gear motor 2 second filler openings by B mouth; Under solenoid directional control valve 4 second states, its filler opening is connected with gear motor 2 second filler openings by B mouth, and its oil outlet is connected with gear motor 2 first filler openings of radiation fan by A mouth; Thereby switch the clockwise and anticlockwise that can realize gear motor 2 under different operating state at solenoid directional control valve 4; Solenoid directional control valve 4 original states are the first state, and gear motor 2 forwards are converted to the second state after solenoid directional control valve input commutation voltage, and gear motor 2 reverses.
And in chassis controller, be also provided with the commutation control unit being connected with solenoid directional control valve 4, in commutation control unit, be provided with timing module and time delay module, timing module generates start signal for first scheduled time of interval, and described start signal is sent to described time delay module and commutation control unit, commutation control unit receives the backward solenoid directional control valve 4 of described start signal and exports commutation voltage, solenoid directional control valve 4 commutates, solenoid directional control valve 4 enters the second state, and the gear motor 2 of radiation fan is reversed.
Delay unit receives after described start signal, after second scheduled time of time delay, sends shutdown signal to commutation control unit, and described commutation control unit stops exporting described commutation voltage to described solenoid directional control valve 4 after receiving described shutdown signal; Solenoid directional control valve 4 comes back to the first state, makes gear motor 2 forward again of radiation fan.
Preferred first scheduled time of the present embodiment is 3 hours, and second scheduled time was 30 seconds; Substantially do not affect radiation fan heat radiation, can also play the effect of dedusting.
As shown in Figure 1, on the circuit that chassis controller is connected with electric proportional pressure control valve 1, be provided with the first electromagnetic switch valve 5; On the circuit that commutation control unit is connected with solenoid directional control valve 4, be provided with the second electromagnetic switch valve 6; The break-make that above-mentioned the first electromagnetic switch valve 5 and the second electromagnetic switch valve 6 are respectively used to control the break-make of chassis controller and electric proportional pressure control valve 1 and control commutation control unit and solenoid directional control valve 4.
As shown in Figure 2, this system hydraulic fluid temperature lower than 25 degree (degree Celsius) time cooling fan rotation speed be zero, the electric current that inputs to electric proportional pressure control valve 1 is 550 milliamperes of its rated current, be all to rise gradually according to certain proportion function relation at 25-30 degree, 30-40 degree, 40-60 degree, 60-80 degree, 80-90 degree cooling fan rotation speeds, the electric current that inputs to electric proportional pressure control valve 1 is that certain proportion function declines gradually; Rotate at full speed at the above cooling fan rotation speed of 90 degree, reach 2200rpm, the electric current that inputs to electric proportional pressure control valve 1 is zero; Like this because the rotating speed of cooling fan is not undergone mutation mechanical structure is had to higher protectiveness.And hydraulic fluid temperature to reach the situation of 90 degrees Celsius less than normal, cooling fan noise is operated in reduced levels always, less on ambient noise impact.
The utility model embodiment's working principle is: in native system, hydraulic fluid temperature sensor is sent to hydraulic oil real time temperature value in the hydraulic oil container detecting in chassis controller, chassis controller is exported the proportional current value of answering in contrast according to the real time temperature of the hydraulic oil detecting to the electric proportional pressure control valve 1 in radiation fan oil circuit control, thereby change in real time the hydraulic fluid flow rate of supply gear motor 2, and then regulate in real time the rotational velocity of radiation fan, realize the high rotating speed of radiation fan high temperature, the slow-revving ideal energy saving noise reduction of low temperature state.
And, in this chassis controller, be also provided with commutation control unit, export the commutation of 24V magnitude of voltage once and time delay dead electricity after 30 seconds to every 3 hours by commutation control unit solenoid directional control valve 4 in radiation fan oil circuit control, make gear motor 2 every reversion in 3 hours 30 seconds, after the blowback of delay foreign material is gone out, continue again forward, ensure that radiation fan normally moves.
The utility model embodiment also provides a kind of engineering machinery, and described engineering machinery is provided with above-mentioned hydraulic oil radiation fan speed-adjusting and control system.
Because above-mentioned hydraulic oil radiation fan speed-adjusting and control system has above-mentioned beneficial effect, there is too above-mentioned beneficial effect so be provided with the engineering machinery of this hydraulic oil radiation fan speed-adjusting and control system, its specific embodiment is similar to the above, does not repeat them here.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a hydraulic oil radiation fan speed-adjusting and control system, comprises and it is characterized in that the oil circuit control of radiation fan,
In described oil circuit control, be provided with electric proportional pressure control valve (1), described electric proportional pressure control valve (1) is for regulating gear motor (2) hydraulic fluid flow rate that enters described radiation fan according to the current value ratio of input;
Temperature transducer (3), is connected with hydraulic oil, for detection of the real time temperature value of described hydraulic oil, and generates temperature value signal;
Chassis controller, be connected with described temperature transducer (3) and described electric proportional pressure control valve (1), receive described temperature value signal, and be greater than after the first predetermined temperature in the indicated real time temperature value of described temperature value signal, become the current value of predetermined ratio with described real time temperature value to described electric proportional pressure control valve (1) output.
2. hydraulic oil radiation fan speed-adjusting and control system according to claim 1, is characterized in that,
In described oil circuit control, be also provided with solenoid directional control valve (4), described solenoid directional control valve (4) for controlling gear motor (2) forward or reverse of described radiation fan after input commutation voltage;
Described chassis controller is also provided with the commutation control unit being connected with described solenoid directional control valve (4);
Described commutation control unit is provided with timing module and time delay module, described timing module generates start signal for after first scheduled time of interval, and described start signal is sent to described time delay module and described commutation control unit, described commutation control unit receives the backward described solenoid directional control valve of described start signal (4) and exports described commutation voltage;
Described time delay module is connected with described timing module, described delay unit is for accepting after described start signal, after second scheduled time of time delay, send shutdown signal to commutation control unit, described commutation control unit stops exporting described commutation voltage to described solenoid directional control valve (4) after receiving described shutdown signal.
3. hydraulic oil radiation fan speed-adjusting and control system according to claim 1, it is characterized in that, described chassis controller is also greater than after the second predetermined temperature in the indicated real time temperature value of described temperature value signal, is zero to the described current value of described electric proportional pressure control valve (1) output.
4. hydraulic oil radiation fan speed-adjusting and control system according to claim 2, is characterized in that, on the circuit that described chassis controller is connected with described electric proportional pressure control valve (1), is provided with the first electromagnetic switch valve (5); And/or,
On the circuit that described commutation control unit is connected with described solenoid directional control valve (4), be provided with the second electromagnetic switch valve (6).
5. hydraulic oil radiation fan speed-adjusting and control system according to claim 2, is characterized in that, described solenoid directional control valve (4) comprises two working staties: the first working state and the second working state;
Under described the first working state, the first filler opening of described solenoid directional control valve is communicated with its first oil outlet, and the second filler opening of described solenoid directional control valve is communicated with its second oil outlet;
Under described the second working state, described the first filler opening is communicated with described the second oil outlet, and described the second filler opening is communicated with described the first oil outlet.
6. an engineering machinery, is characterized in that, described engineering machinery is provided with the hydraulic oil radiation fan speed-adjusting and control system as described in claim 1-5 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420435855.2U CN204003552U (en) | 2014-08-04 | 2014-08-04 | Hydraulic oil radiation fan speed-adjusting and control system and engineering machinery |
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| CN201420435855.2U CN204003552U (en) | 2014-08-04 | 2014-08-04 | Hydraulic oil radiation fan speed-adjusting and control system and engineering machinery |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763695A (en) * | 2015-04-13 | 2015-07-08 | 徐州徐工施维英机械有限公司 | Hydraulic system, radiator system and engineering machinery |
| CN105201963A (en) * | 2015-10-26 | 2015-12-30 | 北京市三一重机有限公司 | Hydraulic oil temperature control system and rotary drilling rig |
| CN105317789A (en) * | 2015-11-27 | 2016-02-10 | 中联重科股份有限公司渭南分公司 | Hydraulic independent heat dissipation control method, device and system |
| CN107605843A (en) * | 2017-10-12 | 2018-01-19 | 徐州徐工随车起重机有限公司 | A kind of electro-hydraulic leveling valve group of multifunctional working bucket |
| CN109653724A (en) * | 2018-12-25 | 2019-04-19 | 中国铁建重工集团有限公司 | The control system of airborne anchor rod drilling machine |
| CN109667781A (en) * | 2019-01-30 | 2019-04-23 | 圣邦集团有限公司 | A kind of fan back-flushing valve |
| CN110778545A (en) * | 2019-11-01 | 2020-02-11 | 上海三一重机股份有限公司 | Fan control system and engineering machinery vehicle |
| CN111536109A (en) * | 2020-04-30 | 2020-08-14 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN112814974A (en) * | 2019-11-18 | 2021-05-18 | 河北雷萨重型工程机械有限责任公司 | Hydraulic oil temperature control system and control method thereof, and pump truck |
| WO2022068661A1 (en) * | 2020-09-30 | 2022-04-07 | 中联重科股份有限公司 | Pressure-compensation hydraulic pump, rotation speed control system and control method, and engineering machinery |
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2014
- 2014-08-04 CN CN201420435855.2U patent/CN204003552U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763695A (en) * | 2015-04-13 | 2015-07-08 | 徐州徐工施维英机械有限公司 | Hydraulic system, radiator system and engineering machinery |
| CN105201963A (en) * | 2015-10-26 | 2015-12-30 | 北京市三一重机有限公司 | Hydraulic oil temperature control system and rotary drilling rig |
| CN105317789A (en) * | 2015-11-27 | 2016-02-10 | 中联重科股份有限公司渭南分公司 | Hydraulic independent heat dissipation control method, device and system |
| CN105317789B (en) * | 2015-11-27 | 2018-06-29 | 中联重科股份有限公司渭南分公司 | Hydraulic independent heat dissipation control method, device and system |
| CN107605843A (en) * | 2017-10-12 | 2018-01-19 | 徐州徐工随车起重机有限公司 | A kind of electro-hydraulic leveling valve group of multifunctional working bucket |
| CN109653724A (en) * | 2018-12-25 | 2019-04-19 | 中国铁建重工集团有限公司 | The control system of airborne anchor rod drilling machine |
| CN109667781A (en) * | 2019-01-30 | 2019-04-23 | 圣邦集团有限公司 | A kind of fan back-flushing valve |
| CN110778545A (en) * | 2019-11-01 | 2020-02-11 | 上海三一重机股份有限公司 | Fan control system and engineering machinery vehicle |
| CN112814974A (en) * | 2019-11-18 | 2021-05-18 | 河北雷萨重型工程机械有限责任公司 | Hydraulic oil temperature control system and control method thereof, and pump truck |
| CN111536109A (en) * | 2020-04-30 | 2020-08-14 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| WO2022068661A1 (en) * | 2020-09-30 | 2022-04-07 | 中联重科股份有限公司 | Pressure-compensation hydraulic pump, rotation speed control system and control method, and engineering machinery |
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