CN103410745A - Fan driving device of mining dump truck - Google Patents
Fan driving device of mining dump truck Download PDFInfo
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- CN103410745A CN103410745A CN2013103098168A CN201310309816A CN103410745A CN 103410745 A CN103410745 A CN 103410745A CN 2013103098168 A CN2013103098168 A CN 2013103098168A CN 201310309816 A CN201310309816 A CN 201310309816A CN 103410745 A CN103410745 A CN 103410745A
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Abstract
The invention belongs to the field of rigid mining dump trucks, and particularly relates to a fan driving device of a mining dump truck. The fan driving device comprises an oil tank and a hydraulic pump, wherein the hydraulic pump is mounted on a PTO; an oil suction port of the hydraulic pump is connected with an oil tank; an oil outlet of the hydraulic pump is connected with a reducing valve; a B port of the reducing valve is connected with a hydraulic motor; the hydraulic motor is connected with a fan; and the fan is mounted behind a radiator. According to the device, the cooling fan of the mining dump truck is driven by the hydraulic motor but is not transmitted by a belt; the working process is as follows: the PTO drives the hydraulic motor to rotate, mechanical energy is converted into pressure energy, the pressure energy drives the motor to rotate, the pressure energy is converted into kinetic energy, and the hydraulic motor drives the fan to rotate, so that the radiator achieves a cooling purpose; the driving device is reliable in structure and stable in operation, and reduces the power consumption of an engine and noise; and at the same time, the belt is not required to be replaced, and adaptability of the truck to the environment is improved.
Description
Technical field
The invention belongs to the self-discharging vehicle for rigid mining field, be specifically related to a kind of quarry tipper fan drive device.
Background technique
Quarry tipper belongs to haul truck, be mainly used in the transportation of large surface mine ore, quarry tipper mainly is comprised of rigid-frame, motor, transmission case, rear axle assy, operator cabin assembly, hydraulic pressure installation, sink etc., wherein engine heat dissipating device is the important component part of quarry tipper, especially stability and the reliability of dumping car is had to the vital impact.
The quarry tipper engine-cooling system generally adopts belt to drive the driving mode of fan rotation at present, formed following structure, namely in the fan dead ahead, dispose the radiator of the cooling use of engine coolant, utilize the rotation of fan that a large amount of cold wind is sucked and the radiator of flowing through to reach the purpose that makes the cooling liquid cooling, therefore, the rotating speed of cooling fan is identical with the rotational speed of motor.Owing in this belt drives mode, not detecting the temperature transducer of cooling liquid, so it doesn't matter for the temperature of rotation speed of the fan and cooling liquid, just the following problem has appearred like this in real work, in the time of cold in the winter time, because can't reducing, rotation speed of the fan forces the cooling long-time subnormal operating temperature of engine coolant that makes, the vehicle maintenance maintenance personnel just has to block in the radiator dead ahead with cotton-wadded quilt, on the contrary in the sweltering heat in summer, because can't improving the temperature that makes cooling liquid, can not effectively reduce the rotating speed of fan, time length causes engine coolant temperature higher, sometimes also affect the normal operation of motor.
Along with the development of hydraulics makes the hydraulic fan drive unit be widely used aspect engineering machinery; but in the application of quarry tipper field seldom; along with improving fuel consumption rate, each large mine emphasis reached the raising to environmental protection requirement in recent years; the hydraulically driven fan device has had application gradually on quarry tipper, this device just has been to provide a kind of independently hydraulically driven fan device.
Summary of the invention
The object of the present invention is to provide a kind of cooling effectiveness that can improve the dumping car radiator, reduce the fuel consume of motor, safe and reliable quarry tipper fan drive device.
Technological scheme
The present invention includes: it is upper that fuel tank, oil hydraulic pump, oil hydraulic pump are arranged on PTO, and the inlet port of described oil hydraulic pump is connected with fuel tank, described oil hydraulic pump oil outlet is connected with reduction valve, the B mouth of described reduction valve is connected with oil hydraulic motor, and described oil hydraulic motor is connected with fan, and fan is arranged on the back of radiator.
In technique scheme, described oil hydraulic pump is the core apparatus of this drive unit, is the power source of whole drive system, is arranged on PTO upper, and its effect is the mechanical energy of PTO output to be converted into to the pressure energy of liquid.Fuel tank is the device of storage hydraulic oil, and reduction valve is that the high pressure oil of oil hydraulic pump output is decreased to the needed force value of this device; Oil hydraulic motor is the actuator of drive fan rotation, and its effect is mechanical energy by hydraulic energy transfer, and fan is arranged on the back of radiator, and its effect is by a large amount of moving airs spreader surface that sucks and flow through, and has improved the radiating efficiency of radiator.
Further technological scheme, described temperature transducer is arranged in radiator, and described temperature transducer is connected with controller, and controller is connected with pressure regulator valve.Temperature transducer is according to current signal of temperature output of cooling liquid in radiator, the proportional delivery pressure signal of the E mouth of this current signal pilot pressure modulating valve.
Further technological scheme, the B mouth of described reduction valve also is connected with the inlet opening of throttle valve, the delivery outlet of described throttle valve is connected with the first inlet opening N of shuttle valve, the second inlet opening M of described shuttle valve is connected with the other parts of existing hydraulic system, the delivery outlet Q of shuttle valve is connected with the LS mouth of described oil hydraulic pump, the effect of shuttle valve is exactly that pressure feedback signal maximum in hydraulic system is passed to oil hydraulic pump, and the pressure that oil hydraulic pump is exported meets the requirement of whole system.
Further technological scheme, the D mouth of described reduction valve is connected with the inlet opening of pressure regulator valve, and the pressure regulator valve delivery outlet is connected with fuel tank, and described reduction valve is a Fixed pressure reducing valve, the be stressed control of modulating valve E mouth of the size of its delivery pressure.
Further technological scheme, described oil hydraulic pump is a load-reacting pump, and the size of its delivery pressure is subjected to the control of the LS mouth pressure of oil hydraulic pump, and the delivery pressure of oil hydraulic pump equals pressure and steady state value sum of LS mouth.
Due to the utilization of technique scheme, the present invention compares with existing belt drives mode the advantage had and is:
1, due to fan rotating speed of the present invention, be subjected to the control of engine coolant temperature, when the temperature of cooling liquid is hanged down, the rotating speed of fan is also low is even zero, when the temperature of engine coolant raises gradually, the rotating speed of fan also improves, the efficiency that this has just improved engine-cooling system, make motor that high cooling effectiveness is provided under the slow-speed of revolution or idling mode.
2, the present invention makes quarry tipper can adapt to different areas and weather, strengthens the adaptability of vehicle to environment.
3, the present invention has reduced fuel consumption, has reduced the discharge of motor;
4, the present invention has reduced noise level to meet new rules;
5, the present invention does not have belt pulley, belt to need to change, and has reduced the maintenance time of system.
6, the technology of the present invention advanced person, replicability is strong.
The accompanying drawing explanation
Fig. 1 be the present invention in working order control principle drawing.
Embodiment
Below in conjunction with accompanying drawing, technical solution of the present invention is described in detail:
With reference to shown in Figure 1, device of the present invention comprises: fuel tank 1, oil hydraulic pump 2, reduction valve 3, oil hydraulic motor 4, fan 5, radiator 6, temperature transducer 7, pressure regulator valve 8, throttle valve 9, PTO10, shuttle valve 11 and controller 12.
It is upper that described oil hydraulic pump 2 is arranged on PTO10, and the inlet port of described oil hydraulic pump 2 is connected with fuel tank 1, and described oil hydraulic pump 2 oil outlets are connected with reduction valve 3; The B mouth of reduction valve 3 is connected with oil hydraulic motor 4, and oil hydraulic motor 4 is connected with fan 5, and fan 5 is arranged on the back of radiator 6.
Further described temperature transducer 7 is arranged on radiator 6, current signal of its output of temperature according to radiator 6 interior cooling liquids, the proportional delivery pressure signal of the E mouth of this current signal pilot pressure modulating valve 8.
Further the B mouth of reduction valve 3 also is connected with the inlet opening of throttle valve 9, the delivery outlet of described throttle valve 9 is connected with the first inlet opening N of shuttle valve 11, the second inlet opening M of described shuttle valve 11 is connected with the other parts of hydraulic system, and the delivery outlet Q of shuttle valve 11 is connected with the LS mouth of described oil hydraulic pump 2.
Further oil hydraulic pump 2 is load-reacting pumps, the size of its delivery pressure is subjected to the control of the LS mouth pressure of oil hydraulic pump 2, the delivery pressure of oil hydraulic pump 2 generally equals the pressure that 20bar adds the LS mouth, so just can guarantee that the force value of oil hydraulic pump 2 outputs can meet the usage requirement of each system.
The D mouth of further described reduction valve is connected with the inlet opening of pressure regulator valve 8, pressure regulator valve 8 delivery outlets are connected with fuel tank 1, described reduction valve 3 is Fixed pressure reducing valves, the be stressed control of modulating valve 8 inlet opening E of the size of its delivery pressure, the effect of reduction valve 3 is that the high pressure oil of oil hydraulic pump 2 delivery outlets is reduced to the required force value of drive fan, B point pressure value equals all the time the force value that E orders and adds the pressure-relief valve spring setting value, and the spring setting value is generally in the 10bar left and right.
(1) under the lower condition of ambient temperature, after just running of motor, engine body does not produce too many heat, so the temperature of engine coolant is very low, be arranged in radiator temperature transducer not output current signal to controller, this Time Controller does not have output current value to pressure regulator valve 10 yet, the input end E of pressure regulator valve 10 names a person for a particular job and there is no force value, the D point of same reduction valve does not have pressure yet, now the reduction valve output terminal B pressure of ordering is just determined by the spring initial set value of reduction valve, this spring setting value is generally in the 10bar left and right, the general resistance that just overcomes oil hydraulic motor, shown in now fan 5 rotate hardly.It is identical that the force value that throttle valve input end C is ordered and B are ordered, force value enters shuttle valve N end through throttle valve 9, shuttle valve Q end output M end and the LS mouth of N end pressure higher value to oil hydraulic pump 2, if M holds to such an extent that pressure is less than the force value that N holds, the outlet pressure of oil hydraulic pump 2 is about 30bar so, if the pressure of M end is greater than the N end pressure, oil hydraulic pump 2 delivery outlet pressure are larger so, but after reduction valve 3 the final about 10bar of B point pressure.
(2) engine running a period of time, coolant temperature progressively improves, the temperature transducer 7 now be arranged in radiator 6 will be exported a small electric stream signal to controller 12, this Time Controller 12 also will be exported a small current value to pressure regulator valve 8, the input end E of pressure regulator valve 8 force value of having named a person for a particular job now, now the D of reduction valve 3 point also has the force value identical with the E point, now the reduction valve 3 output terminal B pressure of the ordering spring initial set value 10bar that just equals reduction valve 3 adds the force value sum that E is ordered, the pressure that B is ordered is greater than the resistance of oil hydraulic motor 4, shown in now fan 5 start to rotate and improve gradually rotating speed.
(3) the engine running time long after, coolant temperature is higher, the temperature transducer 7 now be arranged in radiator 6 will be exported a larger current signal to controller 12, this Time Controller 12 also will be exported a larger current value to pressure regulator valve 8, now the input end E of pressure regulator valve 8 names a person for a particular job a larger force value of correspondence with it, now the D of reduction valve 3 point also has the force value identical with the E point, now the reduction valve 3 output terminal B pressure of the ordering spring initial set value 10bar that just equals reduction valve 3 adds the force value sum that E is ordered, the pressure that B is ordered is far longer than the resistance of oil hydraulic motor 4, shown in now fan 5 maintain a higher rotational speed.
In a word, the temperature correlation of cooling liquid in the rotating speed of oil hydraulic motor 4 and radiator, the temperature of cooling liquid is higher, it is higher that oil hydraulic motor 4 drives rotation speed of the fan, improves the cooling effect of radiator, otherwise, the temperature of cooling liquid is lower, it is lower that oil hydraulic motor 4 drives fan 5 rotating speeds, reduced radiator 6 cooling effects, if the temperature of cooling liquid will not rotated lower than certain value oil hydraulic motor 4.
Claims (5)
1. quarry tipper fan drive device, this device comprises: fuel tank (1), oil hydraulic pump (2), described oil hydraulic pump (2) is arranged on PTO(10) on, the inlet port of oil hydraulic pump (2) is connected with fuel tank (1), it is characterized in that: oil hydraulic pump (2) oil outlet is connected with reduction valve (3), the B mouth of described reduction valve (3) is connected with oil hydraulic motor (4), and described oil hydraulic motor (4) is connected with fan (5), and fan (5) is arranged on the back of radiator (6).
2. quarry tipper fan drive device according to claim 1, it is characterized in that: described temperature transducer (7) is arranged in radiator (6), described temperature transducer (7) is connected with controller (12), and controller (12) is connected with pressure regulator valve (8).
3. quarry tipper fan drive device according to claim 1, it is characterized in that: the B mouth of described reduction valve (3) also is connected with the entrance of throttle valve (9), the outlet of described throttle valve (9) is connected with the N mouth of shuttle valve (11), and the Q mouth of described shuttle valve (11) is connected with the LS mouth of described oil hydraulic pump (2).
4. quarry tipper fan drive device according to claim 1, it is characterized in that: the D mouth of described reduction valve (3) is connected with the entrance of pressure regulator valve (8), and described pressure regulator valve (10) outlet is connected with described fuel tank (1).
5. quarry tipper fan drive device according to claim 1, it is characterized in that: described oil hydraulic pump (2) is a load-reacting pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103098168A CN103410745A (en) | 2013-07-23 | 2013-07-23 | Fan driving device of mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103098168A CN103410745A (en) | 2013-07-23 | 2013-07-23 | Fan driving device of mining dump truck |
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| Publication Number | Publication Date |
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| CN103410745A true CN103410745A (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103098168A Pending CN103410745A (en) | 2013-07-23 | 2013-07-23 | Fan driving device of mining dump truck |
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| CN (1) | CN103410745A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736412A (en) * | 2016-05-04 | 2016-07-06 | 福州麦辽自动化设备有限公司 | Hydraulic drive-based multi-propeller fan |
| CN107276371A (en) * | 2017-08-01 | 2017-10-20 | 徐州徐工矿山机械有限公司 | A kind of converter cabinet aeration radiation system of electric transmission quarry tipper |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04112998A (en) * | 1990-08-31 | 1992-04-14 | Aisin Seiki Co Ltd | Hydraulically driven fan control device |
| JPH04234520A (en) * | 1990-12-28 | 1992-08-24 | Toyota Motor Corp | Rotational frequency control device for hydraulic drive type cooling fan |
| DE4238998A1 (en) * | 1992-11-19 | 1994-05-26 | Bosch Gmbh Robert | Hydrostatic drive for car auxiliaries - has parallel hydromotor circuits for fan and generator with electronic control of pressurised fluid supply from pump |
| CN1274405A (en) * | 1998-07-23 | 2000-11-22 | 沙厄股份有限公司 | Hydraulic fan drive system having non-dedicated flow source |
| CN101010497A (en) * | 2005-04-07 | 2007-08-01 | 日立建机株式会社 | Cooling device for construction machine |
| CN200989233Y (en) * | 2006-10-20 | 2007-12-12 | 首钢总公司 | Mining vehicle fan driving system |
| CN203022861U (en) * | 2013-01-23 | 2013-06-26 | 中国重汽集团济南动力有限公司 | Hydraulic fan cooling system based on CAN (controller area network) information comprehensive control |
| CN203476735U (en) * | 2013-07-23 | 2014-03-12 | 内蒙古北方重型汽车股份有限公司 | Fan drive device of mining dump truck |
-
2013
- 2013-07-23 CN CN2013103098168A patent/CN103410745A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04112998A (en) * | 1990-08-31 | 1992-04-14 | Aisin Seiki Co Ltd | Hydraulically driven fan control device |
| JPH04234520A (en) * | 1990-12-28 | 1992-08-24 | Toyota Motor Corp | Rotational frequency control device for hydraulic drive type cooling fan |
| DE4238998A1 (en) * | 1992-11-19 | 1994-05-26 | Bosch Gmbh Robert | Hydrostatic drive for car auxiliaries - has parallel hydromotor circuits for fan and generator with electronic control of pressurised fluid supply from pump |
| CN1274405A (en) * | 1998-07-23 | 2000-11-22 | 沙厄股份有限公司 | Hydraulic fan drive system having non-dedicated flow source |
| CN101010497A (en) * | 2005-04-07 | 2007-08-01 | 日立建机株式会社 | Cooling device for construction machine |
| CN200989233Y (en) * | 2006-10-20 | 2007-12-12 | 首钢总公司 | Mining vehicle fan driving system |
| CN203022861U (en) * | 2013-01-23 | 2013-06-26 | 中国重汽集团济南动力有限公司 | Hydraulic fan cooling system based on CAN (controller area network) information comprehensive control |
| CN203476735U (en) * | 2013-07-23 | 2014-03-12 | 内蒙古北方重型汽车股份有限公司 | Fan drive device of mining dump truck |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736412A (en) * | 2016-05-04 | 2016-07-06 | 福州麦辽自动化设备有限公司 | Hydraulic drive-based multi-propeller fan |
| CN108194388A (en) * | 2016-05-04 | 2018-06-22 | 何春晖 | A kind of fan |
| CN107276371A (en) * | 2017-08-01 | 2017-10-20 | 徐州徐工矿山机械有限公司 | A kind of converter cabinet aeration radiation system of electric transmission quarry tipper |
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Application publication date: 20131127 |