CN105114165A - Heat dissipating system of mining dump vehicle - Google Patents
Heat dissipating system of mining dump vehicle Download PDFInfo
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- CN105114165A CN105114165A CN201510443344.4A CN201510443344A CN105114165A CN 105114165 A CN105114165 A CN 105114165A CN 201510443344 A CN201510443344 A CN 201510443344A CN 105114165 A CN105114165 A CN 105114165A
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Abstract
The invention relates to a heat dissipating system of a mining dump vehicle. In order to solve the problem that the heat dissipating property of the heat dissipating system of a conventional mining dump vehicle is poor when the conventional mining dump vehicle moves down along a slope and runs slowly , the invention discloses the heat dissipating system of the mining dump vehicle, and the heat dissipating system of the mining dump vehicle comprises a heat dissipator, a fan, a hydraulic motor, a hydraulic steering system and a hydraulic lifting system, wherein the hydraulic steering system comprises a steering oil cylinder, a steering machine, a priority valve and a steering pump; the hydraulic lifting system comprises a lifting oil cylinder, a lifting control valve, a reversing valve and a lifting pump; an oil port of the priority valve is connected with the hydraulic motor, and the lifting pump is connected with the hydraulic motor through the reversing valve and the lifting control valve. According to the heat dissipating system disclosed by the invention, when the mining dump vehicle operates under the operating conditions that the mining dump vehicle does not move down along the slope and runs slowly, oil is supplied for the hydraulic motor for driving the heat dissipator by the steering pump, when the heat dissipating property needs to be greatly improved under the operating conditions that the mining dump vehicle moves down along the slope and runs slowly, the reversing valve operates so as to transport the hydraulic oil of the lifting pump to the hydraulic motor, so that the rotational speed of the hydraulic motor is risen, and the heat dissipating property of the heat dissipating system is improved.
Description
Technical field
The present invention relates to a kind of quarry tipper, more particularly, relate to a kind of quarry tipper radiation system.
Background technique
For existing mechanical transmission self-discharging vehicle for rigid mining, in its radiation system, the fluid power jogging of gearbox and the wheel limit jogging of wet brake are connected in series to engine water-cooling system for water by oil cooler, as shown in Figure 1, motor comprises thermostat and water pump, wherein brake oil cooler and oil cooler for transmission are connected in series to engine water-cooling system for water, brake oil cooler provides refrigerating function for back axle wet brake braking fluid, and oil cooler for transmission provides refrigerating function for gearbox retarder fluid.Radiation fan, to radiator air blast, forces cooling.When in constituent, temperature is lower, constituent is with short circle work, and when in constituent, temperature is higher, constituent is with major cycle work.This structure is simple, radiator utilization ratio is high, in mechanical transmission self-discharging vehicle for rigid mining, be able to extensive use.But mine car works in mining area, it is through lower long slope of being everlasting, under the special operation condition of even fully loaded descending.During mine car descending, motor not oil spout, drag engine rotation by the back axle of mine car by transmission system is counter, engine-driving radiation fan is to radiator heat-dissipation.During the jogging of mine car descending, the heat dissipation potential that the heat that the fluid power jogging of gearbox and the wheel limit jogging of wet brake produce falls apart much larger than water.Such as SGR50C mine car on the market, the power of its motor is 392kW, the maximum heat dissipating capacity of motor is 158.68kW, its for heat dissipation potential that mine car jogging is reserved be 250kW, therefore radiation system design heat dissipation potential is 158.68kW+250kW=408.68kW.But, when this type mine car is walked or drive slowly in the gradient of 15% with 30.9km/h speed under full-load conditions, the heating power of the fluid power jogging of gearbox and the wheel limit jogging of wet brake is 850kW, its heating power, considerably beyond the heat radiation power of radiator, has therefore also just had influence on the jogging ability of mine car widely.
For this radiator of mine car, go up a slope on level land walking time radiator meet cooling requirements and descending jogging time heat dissipation potential wretched insufficiency problem, main frame producer is different according to the driving mode of radiation fan, for the radiating mode of motor Direct driver radiation fan, typically use the heat diffusion area of the better copper product of thermal conductivity and increase water radiator, this is improve car load descending jogging performance to a certain extent, also causes the increase of cost and consumed power simultaneously.But, because mine car is not again walk or drive slowly at descending always, therefore the area merely by increasing radiator improves the heat dissipation potential of radiator, and to meet cooling requirements during descending, the heat dissipation potential of this surplus is again a kind of waste when mine car level land travels.Radiation fan is used to the radiating mode of fluid motor-driven, the situation of radiator heat-dissipation area should not increased, improve heat dissipation potential and just can only improve hydraulic motor rotary speed, also namely improve the flow flowing to oil hydraulic motor, improve flow and also just mean the oil hydraulic pump that will adopt large discharge.But the cooling requirements of mine car under descending and non-downhill two kinds of operating modes is quite greatly different, adopt the oil hydraulic pump of large discharge can increase energy consumption for heat radiation motor under non-downhill operating mode.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of quarry tipper radiation system improving its heat dissipation potential when mine car descending is walked or drive slowly for radiation system heat radiation energy hypodynamic shortcoming during existing mine car descending jogging.
The present invention is the technological scheme realizing its object is such: construct a kind of quarry tipper radiation system, comprise radiator, the oil hydraulic motor of the radiation fan that the air channel of radiator is installed and driving radiation fan, it also comprises hydraulic steering system and hydraulic lifting system in addition, described hydraulic steering system comprises steering cylinder, control the commutator of steering cylinder, pressure-gradient control valve and steering pump, steering pump is variable displacement pump, described hydraulic lifting system comprises elevating ram, control the hoist control valve of elevating ram, selector valve and lifting pump, described steering pump is connected with pressure-gradient control valve, the preferential oil-feed port of described pressure-gradient control valve is connected with commutator, another oil-feed port of described pressure-gradient control valve is connected with oil hydraulic motor, described lifting pump is connected with selector valve, a hydraulic fluid port of selector valve is connected with hoist control valve, another hydraulic fluid port also flows with another oil-feed port of described pressure-gradient control valve and is connected with oil hydraulic motor.In the present invention, when mine car works under the operating mode that non-downhill is walked or drive slowly, the oil hydraulic motor of radiator is driven to have steering pump fuel feeding, when be in descending jogging operating mode need significantly heat radiation ability time, selector valve action by the hydraulic oil river of lifting pump on oil hydraulic motor, to promote the rotating speed of oil hydraulic motor, improve the heat dissipation potential of radiation system.
In above-mentioned quarry tipper radiation system, selector valve is two-position three-way valve, and the filler opening of described two-position three-way valve is connected with lifting pump, and the oil outlet of described two-position three-way valve is connected with hoist control valve and oil hydraulic motor separately.Two-position three-way valve plays switching, is driven between oil hydraulic motor and hoist control valve by the hydraulic oil of lifting pump pumping switch at radiation fan.
In above-mentioned quarry tipper radiation system, pressure-gradient control valve to the connecting pipeline of oil hydraulic motor is provided with solenoid-operated proportional pressure regulator valve.Under the operating mode that mine car is walked or drive slowly in non-downhill, according to the temperature of radiator coolant in radiation system, the rotating speed of solenoid-operated proportional pressure regulator valve adjust flux hydraulic control motor.Reduce the power loss energy saving of motor, particularly at cold snap.
In above-mentioned quarry tipper radiation system, the pipeline between solenoid-operated proportional pressure regulator valve and the hydraulic fluid port of pressure-gradient control valve is provided with the one-way valve from pressure-gradient control valve to solenoid-operated proportional pressure regulator valve direction one-way conduction.
In above-mentioned quarry tipper radiation system, radiator comprises brake oil cooler, oil cooler for transmission and water-filled radiator, and described brake oil cooler, oil cooler for transmission are connected in described water-filled radiator.
In above-mentioned quarry tipper radiation system, also comprise by the emergent steering pump of motoring and shuttle valve, two filler openings of described shuttle valve are connected with the preferential oil-feed port of pressure-gradient control valve with described emergent steering pump respectively, and the oil outlet of described shuttle valve is connected with described commutator.
In above-mentioned quarry tipper radiation system, also comprise engine-driven rigid mechanical transmission system, motor is by the trailing wheel of rigid mechanical transmission system drives mine car, and described steering pump is connected by engine-driving with the output terminal of lifting pump with described motor.When in the operating mode that mine car is walked or drive slowly in non-downhill, engine operation, by rigid mechanical transmission system drives rear wheel, motor also drives lifting pump and steering pump simultaneously, realizes corresponding function.When mine car is in descending jogging operating mode, motor not oil spout, the trailing wheel of mine car drags engine rotation by rigid mechanical transmission system is counter, simultaneously also by engine-driving steering pump and lifting pump, realizes turning to and heat sinking function.
The beneficial effect that the present invention compared with prior art has: the present invention, under non-downhill jogging operating mode, utilizes the hydraulic pressure of steering pump to export and drives the oil hydraulic motor of radiation fan to rotate, meet radiating requirements.When needing large heat dissipation potential under being in descending jogging operating mode, the flow of lifting pump being collaborated in oil hydraulic motor, to walk or drive slowly the demand of large heat dissipation potential to meet descending.
Accompanying drawing explanation
Fig. 1 is the block diagram of existing quarry tipper radiation system;
Fig. 2 is the schematic diagram of quarry tipper radiation system of the present invention.
Component title and sequence number in figure:
Elevating ram 1, hoist control valve 2, lifting pump 3, selector valve 4, oil hydraulic motor 5, solenoid-operated proportional pressure regulator valve 6, motor 7, one-way valve 8, steering cylinder 9, commutator 10, shuttle valve 11, pressure-gradient control valve 12, steering pump 13, emergent steering pump 14, fuel tank 15, rigid mechanical transmission system 16.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments is described.
As shown in Figure 2, quarry tipper radiation system, comprise the radiation fan that the air channel of radiator, radiator is installed, the oil hydraulic motor 5 driving radiation fan, hydraulic steering system and hydraulic lifting system, hydraulic steering system comprises steering cylinder 9, the commutator 10 controlling steering cylinder, pressure-gradient control valve 12 and steering pump 13, steering pump 13 is variable displacement pump, and hydraulic lifting system comprises elevating ram 1, the hoist control valve 2 controlling elevating ram 1, selector valve 4 and lifting pump 3.Steering pump 13 is connected with pressure-gradient control valve 12, the preferential oil-feed port of pressure-gradient control valve 12 is connected with a filler opening of shuttle valve 11, the another one filler opening of shuttle valve 11 is connected with emergent steering pump 14, emergent steering pump 14 is driven by motor 7, the oil outlet of shuttle valve 11 is connected with commutator 10, commutator 10 is connected with steering cylinder 9, controls the flexible of steering cylinder 9.
Lifting pump 3 is connected with selector valve 4, and selector valve 4 is automatically controlled two-position three-way valves, and its filler opening is connected with lifting pump 3, and a hydraulic fluid port of selector valve 4 is connected with hoist control valve 2, the lifting of hoist control valve 2 and elevating ram 1 connection control elevating ram 1.The another one hydraulic fluid port of pressure-gradient control valve 12 is communicated with the filler opening of an one-way valve 8, the oil outlet of one-way valve 8 is communicated with a solenoid-operated proportional pressure regulator valve 6, is connected after the oil outlet of solenoid-operated proportional pressure regulator valve 6 also flows with the another one hydraulic fluid port of selector valve 4 with driving the oil hydraulic motor 5 of radiation fan.
In the present embodiment, quarry tipper comprises engine-driven rigid mechanical transmission system, and motor 16 is by the trailing wheel of rigid mechanical transmission system drives mine car, and steering pump 13 is connected with motor with lifting pump 3, by engine-driving.
In the present invention, radiator comprises brake oil cooler, oil cooler for transmission and water-filled radiator, and brake oil cooler, oil cooler for transmission are connected in described water-filled radiator.Be provided with temperature transducer in systems in which, for detecting the temperature of cooling water in water-filled radiator, its signal is for controlling the flow of solenoid-operated proportional pressure regulator valve regulator solution pressure motor.
In the present embodiment, when quarry tipper works under the operating mode that non-downhill is walked or drive slowly, motor is by the walking of rigid mechanical transmission system drives mine car, motor also drives steering pump and lifting pump simultaneously, realize corresponding requirement, now selector valve 4 is in left position, and lifting pump 3 is to hoist control valve 2 fuel feeding, if without lifting action, then hydraulic oil returns hydraulic oil container 15 by the meta of hoist control valve 2.Drive the oil hydraulic motor 5 of radiation fan rotation by steering pump 13 fuel feeding, and carry out regulating the flow feeding to oil hydraulic motor 5 according to the cooling water temperature of water-filled radiator, with the rotating speed of hydraulic control motor to meet the cooling requirements of quarry tipper.When quarry tipper is in descending jogging operating mode, motor 15 not oil spout, trailing wheel is rotated by the anti-motor 16 that drags of rigid mechanical transmission system, motor 16 drives lifting pump 3 and steering pump 13 to work, now selector valve 4 is alloted to right position, lifting pump 3 is to oil hydraulic motor 5 fuel feeding, the hydraulic oil of steering pump 13 surplus also feeds to oil hydraulic motor 5, collaborate with the next oily of lifting pump 3, greatly promote the rotating speed of oil hydraulic motor thus, improve the heat dissipation potential of radiation system, to meet radiating requirements huge when quarry tipper descending is walked or drive slowly.
The beneficial effect that the present invention compared with prior art has: the present invention, under non-downhill jogging operating mode, utilizes the hydraulic pressure of steering pump to export and drives the oil hydraulic motor of radiation fan to rotate, meet radiating requirements.When needing large heat dissipation potential under being in descending jogging operating mode, the flow of lifting pump being collaborated in oil hydraulic motor, to walk or drive slowly the demand of large heat dissipation potential to meet descending.
Claims (9)
1. a quarry tipper radiation system, comprise radiator, the oil hydraulic motor of the radiation fan that the air channel of radiator is installed and driving radiation fan, characterized by further comprising hydraulic steering system and hydraulic lifting system, described hydraulic steering system comprises steering cylinder, control the commutator of steering cylinder, pressure-gradient control valve and steering pump, described hydraulic lifting system comprises elevating ram, control the hoist control valve of elevating ram, selector valve and lifting pump, described steering pump is connected with pressure-gradient control valve, the preferential oil-feed port of described pressure-gradient control valve is connected with commutator, another oil-feed port of described pressure-gradient control valve is connected with oil hydraulic motor, described lifting pump is connected with selector valve, a hydraulic fluid port of selector valve is connected with hoist control valve, another hydraulic fluid port also flows with another oil-feed port of described pressure-gradient control valve and is connected with oil hydraulic motor.
2. quarry tipper radiation system according to claim 1, it is characterized in that described selector valve is two-position three-way valve, the filler opening of described two-position three-way valve is connected with lifting pump, and the oil outlet of described two-position three-way valve is connected with hoist control valve and oil hydraulic motor separately.
3. quarry tipper radiation system according to claim 1, is characterized in that described pressure-gradient control valve to the connecting pipeline of oil hydraulic motor is provided with solenoid-operated proportional pressure regulator valve.
4. quarry tipper radiation system according to claim 1, is characterized in that the pipeline between solenoid-operated proportional pressure regulator valve and the hydraulic fluid port of pressure-gradient control valve is provided with the one-way valve from pressure-gradient control valve to solenoid-operated proportional pressure regulator valve direction one-way conduction.
5. quarry tipper radiation system according to claim 1, it is characterized in that described radiator comprises brake oil cooler, oil cooler for transmission and water-filled radiator, described brake oil cooler, oil cooler for transmission are connected in described water-filled radiator.
6. quarry tipper radiation system according to claim 1, characterized by further comprising by the emergent steering pump of motoring and shuttle valve, two filler openings of described shuttle valve are connected with the preferential oil-feed port of pressure-gradient control valve with described emergent steering pump respectively, and the oil outlet of described shuttle valve is connected with described commutator.
7. quarry tipper radiation system according to claim 1, is characterized in that described steering pump is variable displacement pump.
8. quarry tipper radiation system according to any one of claim 1 to 7, characterized by further comprising engine-driven rigid mechanical transmission system.
9. quarry tipper radiation system according to claim 8, is characterized in that described steering pump is connected by engine-driving with the output terminal of lifting pump with described motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510443344.4A CN105114165B (en) | 2015-07-27 | 2015-07-27 | Quarry tipper cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510443344.4A CN105114165B (en) | 2015-07-27 | 2015-07-27 | Quarry tipper cooling system |
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| CN105114165A true CN105114165A (en) | 2015-12-02 |
| CN105114165B CN105114165B (en) | 2017-10-03 |
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| CN201510443344.4A Active CN105114165B (en) | 2015-07-27 | 2015-07-27 | Quarry tipper cooling system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286481A (en) * | 2016-08-19 | 2017-01-04 | 中航飞机起落架有限责任公司 | A kind of hydraulic commutating circuit without channelling and commutation method thereof |
| CN107905288A (en) * | 2017-11-01 | 2018-04-13 | 广西柳工机械股份有限公司 | Loading machine double speed steering control system |
| CN108657049A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Lift cooling combined system and vehicle |
| CN106274605B (en) * | 2016-08-18 | 2019-02-19 | 广西柳工机械股份有限公司 | Quarry tipper load-sensitive combining hydraulic system |
| CN113497524A (en) * | 2020-03-18 | 2021-10-12 | 株洲中车时代电气股份有限公司 | Cooling system for mine car |
| CN114423669A (en) * | 2019-09-18 | 2022-04-29 | 卡特彼勒Sarl | Hydraulic valve module for steering and work functions in a work vehicle |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274605B (en) * | 2016-08-18 | 2019-02-19 | 广西柳工机械股份有限公司 | Quarry tipper load-sensitive combining hydraulic system |
| CN106286481A (en) * | 2016-08-19 | 2017-01-04 | 中航飞机起落架有限责任公司 | A kind of hydraulic commutating circuit without channelling and commutation method thereof |
| CN108657049A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Lift cooling combined system and vehicle |
| CN108657049B (en) * | 2017-03-31 | 2020-11-20 | 比亚迪股份有限公司 | Lifting cooling composite system and vehicle |
| CN107905288A (en) * | 2017-11-01 | 2018-04-13 | 广西柳工机械股份有限公司 | Loading machine double speed steering control system |
| CN107905288B (en) * | 2017-11-01 | 2019-11-19 | 广西柳工机械股份有限公司 | Loading machine double speed steering control system |
| CN114423669A (en) * | 2019-09-18 | 2022-04-29 | 卡特彼勒Sarl | Hydraulic valve module for steering and work functions in a work vehicle |
| CN114423669B (en) * | 2019-09-18 | 2023-09-08 | 卡特彼勒Sarl | Hydraulic valve module for steering and work functions in a work vehicle |
| CN113497524A (en) * | 2020-03-18 | 2021-10-12 | 株洲中车时代电气股份有限公司 | Cooling system for mine car |
| CN113497524B (en) * | 2020-03-18 | 2023-03-24 | 株洲中车时代电气股份有限公司 | Cooling system for mine car |
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| CN105114165B (en) | 2017-10-03 |
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Inventor after: Wu Weilin Inventor after: Yang Shengqing Inventor after: Li Yun Inventor after: Tang Xuwen Inventor after: Peng Fumin Inventor after: Tang Yunjuan Inventor after: Wang Yu Inventor after: Deng Hongbin Inventor before: Wu Weilin Inventor before: Yang Shengqing Inventor before: Li Yun Inventor before: Tang Xuwen Inventor before: Peng Fumin Inventor before: Tang Yunjuan Inventor before: Wang Yu Inventor before: Deng Hongbin |
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Effective date of registration: 20200630 Address after: No.588 Yancheng South Road, Wujin high tech Zone, Changzhou City, Jiangsu Province Patentee after: Liugong (Changzhou) Mining Machinery Co.,Ltd. Address before: 545007 the Guangxi Zhuang Autonomous Region Liuzhou City Liu Tai Road No. 1 Patentee before: GUANGXI LIUGONG MACHINERY Co.,Ltd. |