CN203114404U - Forklift engine cooling system utilizing static hydraulic pressure to drive fan - Google Patents

Forklift engine cooling system utilizing static hydraulic pressure to drive fan Download PDF

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Publication number
CN203114404U
CN203114404U CN 201320119628 CN201320119628U CN203114404U CN 203114404 U CN203114404 U CN 203114404U CN 201320119628 CN201320119628 CN 201320119628 CN 201320119628 U CN201320119628 U CN 201320119628U CN 203114404 U CN203114404 U CN 203114404U
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China
Prior art keywords
hydraulic
oil
cooling
engine
radiator
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Active
Application number
CN 201320119628
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Chinese (zh)
Inventor
余建福
温跃清
袁正
毕胜
陈仕胜
徐庆华
田原
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Anhui Heli Co Ltd
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Anhui Heli Co Ltd
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Priority to CN 201320119628 priority Critical patent/CN203114404U/en
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Publication of CN203114404U publication Critical patent/CN203114404U/en
Active legal-status Critical Current
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Abstract

The utility model discloses a forklift engine cooling system utilizing static hydraulic pressure to drive a fan. The forklift engine cooling system comprises a cooling module, the cooling fan, a hydraulic oil tank and a gear pump. The cooling fan is arranged on the cooling module and separated from an engine; and the gear pump is arranged on the engine. A hydraulic oil radiator is additionally arranged in the cooling module, and the hydraulic oil tank and the forklift hydraulic system hydraulic oil tank are shared. A hydraulic motor is arranged on the cooling module, the cooling fan is driven by the hydraulic motor, an oil absorption and oil filtration device is arranged between an inlet of the gear pump and the hydraulic oil tank, a hydraulic oil temperature sensor is arranged between an outlet of the oil absorption and oil filtration device and the gear pump, and electro-hydraulic proportional control valves are arranged on the hydraulic motor in parallel. The forklift engine cooling system utilizing the static hydraulic pressure to drive the fan has the advantages that rotation speeds of the cooling fan of the engine can be adjusted automatically according to temperature change of the engine, and therefore stepless speed change can be achieved; the arranged position of the radiator is not relevant to the position of the engine, and the radiator can be arranged freely; a high-pressure automatic failure protection function is achieved; and the forklift engine cooling system is efficient, energy-saving, long in service life and free of maintenance.

Description

The forklift engine cooling system of hydrostatic drive fan
Technical field
The utility model belongs to fork truck cooling system technical field, is specifically related to a kind of fork truck cooling system of hydrostatic drive fan.
Background technique
At present; the cooling system of domestic most of fork trucks mainly is made up of oil radiator, water radiator, cooling fan etc.; cooling fan is driven with stable drive ratio by V-shape belt by engine crankshaft; speed of cooling fan can only be with the rotational speed regulation of motor; can't realize regulating speed of cooling fan automatically according to the temperature height of motor, gearbox, often cause engine overheat to cause intermittently shutting down.The direct drive fan power consumption of motor is too big, is satisfying under the situation of performance requirement, wants to reduce engine power and is difficult to, and causes reducing the discharging of motor, also just can't satisfy environmental regulation to the requirement of discharging.Oil radiator and water radiator are subjected to the restriction of engine location, and its space and location arrangements are difficult to change, if will increase hydraulic oil radiator, hardly may.Along with the requirement that state can outer environmental protection rules is more and more higher, each motor manufacturer is by reducing engine power, developed turbosupercharging, absolutely empty in cold motor, by computer control motor.Therefore, the cooling system of traditional this drive fan can't satisfy the requirement of engine technology development.
The model utility content
For overcoming the defective that can't regulate cooling fan rotation speed in the prior art automatically, the utility model provides a kind of fork truck cooling system that can regulate the hydrostatic drive cooling fan of rotation speed of the fan automatically.
Concrete technological scheme of the present utility model is as follows:
The forklift engine cooling system of hydrostatic drive fan comprises motor 2, cooling fan 10 and refrigerating module, and described refrigerating module comprises cold heat sink and gearbox transmission oil radiator in engine water temperature radiator, the motor; Described cooling fan 10 is corresponding with refrigerating module, it is characterized in that: also comprise gear pump 6, oil hydraulic motor 7, hydraulic oil radiator 4 and electrohydraulic proportional control valve 9, cooling fan 10 is driven by oil hydraulic motor 7, and the outlet of the import of oil hydraulic motor 7 and gear pump 6 is communicated with; The import of the outlet of oil hydraulic motor 7 and hydraulic oil radiator 4 is communicated with, be installed in parallel electrohydraulic proportional control valve 9 on the described oil hydraulic motor 7, the inlet opening 9.1 of electrohydraulic proportional control valve 9 is communicated with the import of oil hydraulic motor 7, and the flow-off 9.2 of electrohydraulic proportional control valve 9 is communicated with the outlet of oil hydraulic motor 7; The outlet of the outlet of hydraulic oil radiator 4 and gear pump 6 is communicated with the hydraulic oil container 3 of car load hydraulic system respectively.
The outlet of gear pump 6 is provided with oil suction filter cleaner 5 and temperature transducer 8.
The beneficial effects of the utility model are:
(1) speed of cooling fan of motor is regulated automatically with the height of engine temperature, realizes stepless change, guarantees that motor under any operating mode, has suitable air quantity and the circulating load of cooling liquid, moves under constant temperature;
(2) radiator position and engine location are irrelevant, can arbitrarily arrange;
(3) have high pressure automatic fault protection function, if power when breaking down, the electrical signal inefficacy can cause fan work at maximum speed, has obtained the highest cooling capacity of motor;
(4) energy-efficient, the life-span is long, and is non-maintaining.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Sequence number is among the last figure: gearbox 1, motor 2, hydraulic oil container 3, hydraulic oil radiator 4, oil suction oil purifier 5, gear pump 6, oil hydraulic motor 7, hydraulic fluid temperature sensor 8, electrohydraulic proportional control valve 9, inlet opening 9.1, flow-off 9.2, control mouth 9.3, cooling fan 10.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further.
Embodiment:
As shown in Figure 1, the forklift engine cooling system of hydrostatic drive fan comprises motor 2, cooling fan 10 and refrigerating module, and described refrigerating module comprises cold heat sink and gearbox transmission oil radiator in engine water temperature radiator, the motor; Described cooling fan 10 is corresponding with refrigerating module; Also comprise gear pump 6, oil hydraulic motor 7, hydraulic oil radiator 4 and electrohydraulic proportional control valve 9, cooling fan 10 is driven by oil hydraulic motor 7, and the outlet of the import of oil hydraulic motor 7 and gear pump 6 is communicated with; The import of the outlet of oil hydraulic motor 7 and hydraulic oil radiator 4 is communicated with, be installed in parallel electrohydraulic proportional control valve 9 on the oil hydraulic motor 7, the inlet opening 9.1 of electrohydraulic proportional control valve 9 is communicated with the import of oil hydraulic motor 7, and the flow-off 9.2 of electrohydraulic proportional control valve 9 is communicated with the outlet of oil hydraulic motor 7; The outlet of the outlet of hydraulic oil radiator 4 and gear pump 6 is communicated with the hydraulic oil container 3 of car load hydraulic system respectively.The outlet of gear pump 6 is equipped with oil suction filter cleaner 5 and hydraulic fluid temperature sensor 8.
Working principle of the present utility model is as follows:
Outside of the present utility model is connected with controller, chill temperature sensor, gearbox transmission oil temperature sensor and controller have been formed a closed control system in hydraulic fluid temperature sensor 8, engine water temperature sensor, the motor, controller is by the signal sampling of each temperature transducer to each cooling unit temperature in the radiator, and sampled signal carried out calculation process, output control signals to electrohydraulic proportional control valve 9.Wherein, hydraulic oil temperature sensor 8 flows to controller with the temperature signal that detects, signal after controller will be handled inputs to the control mouth 9.3 of electrohydraulic proportional control valve, change the empty accounting of the pwm signal of electrohydraulic proportional control valve, adjust the spillway discharge of electric-hydraulic proportion control valve, spillway discharge is by flow-off 9.2 overflows of electrohydraulic proportional control valve, change flow and the working pressure of oil hydraulic motor 7, the rotating speed of regulator solution pressure motor 7, thereby change cooling fan 10 rotating speeds, realization is to the control of system, and then the stepless change of realization cooling fan 10.

Claims (2)

1. the forklift engine cooling system of hydrostatic drive fan comprises motor (2), cooling fan (10) and refrigerating module, and described refrigerating module comprises cold heat sink and gearbox transmission oil radiator in engine water temperature radiator, the motor; Described cooling fan (10) is corresponding with refrigerating module, it is characterized in that: also comprise gear pump (6), oil hydraulic motor (7), hydraulic oil radiator (4) and electrohydraulic proportional control valve (9), cooling fan (10) is driven by oil hydraulic motor (7), and the outlet of the import of oil hydraulic motor (7) and gear pump (6) is communicated with; The import of the outlet of oil hydraulic motor (7) and hydraulic oil radiator (4) is communicated with, be installed in parallel electrohydraulic proportional control valve (9) on the described oil hydraulic motor (7), the inlet opening (9.1) of electrohydraulic proportional control valve (9) is communicated with the import of oil hydraulic motor (7), and the flow-off (9.2) of electrohydraulic proportional control valve (9) is communicated with the outlet of oil hydraulic motor (7); The outlet of the outlet of hydraulic oil radiator (4) and gear pump (6) is communicated with the hydraulic oil container (3) of car load hydraulic system respectively.
2. the forklift engine cooling system of hydrostatic drive fan according to claim 1, it is characterized in that: the outlet of gear pump (6) is provided with oil suction filter cleaner (5) and hydraulic fluid temperature sensor (8).
CN 201320119628 2013-03-18 2013-03-18 Forklift engine cooling system utilizing static hydraulic pressure to drive fan Active CN203114404U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320119628 CN203114404U (en) 2013-03-18 2013-03-18 Forklift engine cooling system utilizing static hydraulic pressure to drive fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320119628 CN203114404U (en) 2013-03-18 2013-03-18 Forklift engine cooling system utilizing static hydraulic pressure to drive fan

Publications (1)

Publication Number Publication Date
CN203114404U true CN203114404U (en) 2013-08-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320119628 Active CN203114404U (en) 2013-03-18 2013-03-18 Forklift engine cooling system utilizing static hydraulic pressure to drive fan

Country Status (1)

Country Link
CN (1) CN203114404U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103523712A (en) * 2013-10-14 2014-01-22 安徽合力股份有限公司 Radiator of diesel fork truck
CN109854649A (en) * 2019-01-25 2019-06-07 一汽解放汽车有限公司柳州分公司 A kind of wet brake external circulation cooling system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103523712A (en) * 2013-10-14 2014-01-22 安徽合力股份有限公司 Radiator of diesel fork truck
CN103523712B (en) * 2013-10-14 2016-07-06 安徽合力股份有限公司 Radiator of diesel fork truck
CN109854649A (en) * 2019-01-25 2019-06-07 一汽解放汽车有限公司柳州分公司 A kind of wet brake external circulation cooling system
CN109854649B (en) * 2019-01-25 2021-03-09 一汽解放汽车有限公司柳州分公司 External circulation cooling system of wet brake

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