CN114810735A - Hydraulic oil circulating cooling system and circulating cooling method of telescopic boom forklift - Google Patents
Hydraulic oil circulating cooling system and circulating cooling method of telescopic boom forklift Download PDFInfo
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- CN114810735A CN114810735A CN202210296325.3A CN202210296325A CN114810735A CN 114810735 A CN114810735 A CN 114810735A CN 202210296325 A CN202210296325 A CN 202210296325A CN 114810735 A CN114810735 A CN 114810735A
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 177
- 238000001816 cooling Methods 0.000 title claims abstract description 103
- 239000003921 oil Substances 0.000 claims description 65
- 230000017525 heat dissipation Effects 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000005457 optimization Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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Abstract
The invention discloses a hydraulic oil circulating cooling system and a hydraulic oil circulating cooling method of a telescopic boom forklift truck. This hydraulic oil circulative cooling system is used for the hydraulic oil circulative cooling system of whole car overall arrangement, all brings the hydraulic oil circulative cooling system into with whole car essential element, carries out the cooling of whole car, very big improvement the system heat-sinking capability to the independent radiating radiator power demand diminishes, does not need special radiator and hydraulic tank even, changes in the structure upgrading optimization of whole car. The invention is suitable for various engineering machinery vehicles and has high popularization and applicability.
Description
Technical Field
The invention relates to the technical field of forklift circulating cooling, in particular to a hydraulic oil circulating cooling system and a hydraulic oil circulating cooling method for a telescopic boom forklift.
Background
A hydraulic oil circulating cooling system relates to cooling of hydraulic systems of various mechanical equipment. The hydraulic system has the advantages that the hydraulic system is ubiquitous in practical application of various mechanical equipment, the structure is more compact along with the upgrading and optimization of the various mechanical equipment, and the heat dissipation requirements of the hydraulic system in the various mechanical equipment are still tight. But in complete machine system, hydraulic oil circulative cooling system's route is shorter and shorter more, and to the power demand grow of radiator, increased the occupation of hydraulic oil circulative cooling system to whole car space to powerful radiator has occupied a very big part of power again, forces the fuel vehicle to choose more powerful engine for use, and the battery of more large capacity is chooseed for use to the electric motor car, and this structure upgrade to whole car optimizes and has caused very big resistance.
For example, in 2018, a chinese utility model patent (publication No. CN208200279U) discloses a hydraulic oil cooling system for a telescopic boom all terrain vehicle, which comprises a cooler mounted on the vehicle, a filter, and an oil pump and a motor connected to a hydraulic oil tank, wherein the filter is fixed by a five-way welding member mounted on the vehicle, and a direction-adjusting welding member communicated with the filter is further mounted on the outer side of the filter above the five-way welding member. The utility model discloses a first oil pipe, the second of cooling system advance oil pipe and first oil pipe, the second returns arranging according to cooler, filter, motor and oil pump etc. of oil pipe etc. and carries out optimal design for cooling system compact structure, but carry out the compact overall arrangement anyhow, in order to guarantee circulative cooling's effect, can not use the less radiator of volume and power, more can not directly save the cooler, the condition that the space is occupied still obviously exists.
Disclosure of Invention
The invention aims to provide a hydraulic oil circulating cooling system and a hydraulic oil circulating cooling method of a telescopic boom forklift, which are suitable for vehicle requirements of a multi-heat-source system and large heat dissipation capacity.
In order to achieve the purpose, the invention adopts the technical scheme that:
a hydraulic oil circulating cooling system of a telescopic boom forklift comprises a hydraulic oil source, a hydraulic power source, a hydraulic actuating element, a bridge box cavity and a heat dissipation element which are connected in series, wherein the hydraulic oil source is connected with the hydraulic power source through a first hydraulic oil pipe; and hydraulic oil or hydraulic oil containing an extreme pressure antiwear agent is injected into the hydraulic oil source.
This hydraulic oil circulative cooling system is used for the hydraulic oil circulative cooling system of whole car overall arrangement, all brings the hydraulic oil circulative cooling system into with whole car essential element, carries out the cooling of whole car, very big improvement the system heat-sinking capability to the independent radiating radiator power demand diminishes, does not need special radiator and hydraulic tank even, changes in the structure upgrading optimization of whole car. The invention is suitable for various engineering machinery vehicles and has high popularization and applicability.
The hydraulic oil circulating cooling system brings the front axle box and the rear axle box of the vehicle into the circulating cooling system, so that the large metal surface area of the cavity of the axle box is fully utilized for rapid heat dissipation, the requirement of the system on a radiator is reduced, the arrangement of the whole vehicle is more reasonable, and the weight of the whole vehicle is reduced; in addition, the circulating cooling system can add an extreme pressure antiwear agent into hydraulic oil for use, better protects gear parts while cooling, and has better lubricating and heat dissipating effects on various gear parts and transmission parts in a hydraulic actuating element and a bridge box cavity.
The hydraulic oil circulating cooling system circularly cools oil in the whole system, enlarges the natural cooling area, maintains the oil in the system at a lower horizontal temperature, is favorable for prolonging the service life of a sealing element in a hydraulic system, can have higher system heat dissipation efficiency, and reduces the energy consumption of a vehicle cooling system.
Further, the bridge box cavity at least comprises one of a front bridge middle box and a rear bridge middle box; the front axle middle box and the rear axle middle box are also connected through a hydraulic oil pipe.
The front axle middle box and the rear axle middle box are provided with inner spaces, oil lubrication is needed in the operation process, the oil lubrication is connected into a cooling system, the oil can successively pass through the front axle middle box and the rear axle middle box, the large surface areas of the metal shells of the front axle middle box and the rear axle middle box are utilized to dissipate heat, the heat dissipation effect is good, and parts of the vehicle are fully utilized.
Because the front axle middle box and the rear axle middle box are utilized for circulating heat dissipation, even if the heat dissipation element is still used in the heat dissipation system, the heat dissipation element can be set to be of a type with small size and low power consumption, so that the occupied space is reduced, the weight is lightened, and the consumption of vehicle energy is reduced.
Furthermore, a plurality of heat dissipation fins are further arranged on the peripheral surface of the metal box body of the bridge box cavity. The arrangement of the heat dissipation fins can further improve the heat dissipation capacity of the front axle middle box and the rear axle middle box.
Furthermore, the hydraulic oil source is an oil tank, the hydraulic power source is pumps in various forms, the hydraulic actuating element is a hydraulic motor reduction gearbox or a hydraulic stepless speed changer, and the radiating element comprises, but is not limited to, a tube array type radiator and a plate type radiator.
Furthermore, the first hydraulic oil pipe, the second hydraulic oil pipe, the third hydraulic oil pipe, the fourth hydraulic oil pipe and the fifth hydraulic oil pipe are hoses, hard pipes or pipes combined by the hoses and the hard pipes, so that the connection and the combination are convenient.
Further, the hydraulic oil source the hydraulic power source the hydraulic actuating element the axle box cavity with the radiating element is fixed mounting respectively on the frame of whole car, the axle box cavity sets up respectively in the front and back side, the hydraulic power source with the hydraulic actuating element sets up and is close to middle part axletree department at the frame, the hydraulic oil source with the radiating element is established respectively in the both sides neutral gear department of axletree.
Further, a cooling method of a hydraulic oil circulating cooling system of a telescopic boom forklift truck is characterized in that oil enters the hydraulic power source from the hydraulic oil source through the first hydraulic oil pipe, under the drive of the hydraulic power source, oil enters the hydraulic execution element through the second hydraulic oil pipe to drive the actuator to act, high-temperature oil generated by the rotation of the hydraulic executive component enters the front axle middle box through a hydraulic oil pipe III, partial heat is emitted in the front axle middle box by virtue of a large-area metal axle housing, high-temperature oil enters the rear axle middle box through a pipeline, and part of heat is dissipated again by depending on a large-area metal axle housing in the rear axle middle box, the final high-temperature oil enters the radiating element through the hydraulic oil pipe four to be finally cooled, and the cooled low-temperature oil returns to the hydraulic oil source through the hydraulic oil pipe five to complete one-time circulating cooling.
As another cooling mode of the present application, the heat dissipation element is removed, and the hydraulic oil pipe four is directly communicated with the hydraulic oil pipe five; and an air-cooled radiator is arranged at the position of the radiating element and used for accelerating the flow between the bridge box cavity and the cooling air.
As another cooling method of this application, remove radiating element, will hydraulic pressure oil pipe four with hydraulic pressure oil pipe five directly communicate, directly utilize the metal axle housing of axle box cavity dispels the heat.
As another cooling mode of the present application, the heat dissipation element and the hydraulic oil source are removed, the hydraulic oil pipe four, the hydraulic oil pipe five and the hydraulic oil pipe one are serially connected and communicated to form a pipeline, and hydraulic oil containing an extreme pressure antiwear agent is directly arranged in the pipeline for circulation; the oil liquid flow path is that the oil liquid enters the hydraulic power source from the bridge box cavity, under the drive of the hydraulic power source, the oil liquid enters the hydraulic execution element through the hydraulic oil pipe II to drive the actuator to act, high-temperature oil liquid generated by the rotation of the actuator enters the bridge box cavity through the hydraulic oil pipe III, heat is emitted in the bridge box cavity by virtue of a large-area metal axle housing, the temperature of the oil liquid is finally reduced to the temperature required by the normal operation of the system, and then one-time circulating cooling is completed; and returning the cooled oil to the hydraulic power source through a pipeline for next circulation.
Compared with the prior art, the invention has the beneficial effects that: 1. this hydraulic oil circulative cooling system is used for the hydraulic oil circulative cooling system of whole car overall arrangement, all brings the hydraulic oil circulative cooling system into with whole car essential element, carries out the cooling of whole car, very big improvement the system heat-sinking capability to the independent radiating radiator power demand diminishes, does not need special radiator and hydraulic tank even, changes in the structure upgrading optimization of whole car. The invention is suitable for various engineering machinery vehicles, and has high popularization applicability; 2. the hydraulic oil circulating cooling system brings the front axle box and the rear axle box of the vehicle into the circulating cooling system, the large metal surface area of the cavity of the axle box is fully utilized for rapid heat dissipation, the requirement of the system on a radiator is reduced, the arrangement of the whole vehicle is more reasonable, the weight of the whole vehicle is reduced, and the energy loss of the vehicle is reduced; 3. the circulating cooling system can share the hydraulic oil and the extreme pressure antiwear agent, better protects gear parts while cooling, and has better lubricating and heat-dissipating effects on various gear parts and transmission parts in a hydraulic actuating element and a bridge box cavity; 4. this hydraulic oil circulative cooling system carries out the circulative cooling in the complete machine system with fluid, enlarges the natural cooling area to fluid in the system maintains lower horizontal temperature, is favorable to prolonging the life-span of hydraulic system inner seal spare, and this hydraulic oil circulative cooling system can have higher system radiating efficiency, has reduced vehicle cooling system energy consumption.
Drawings
Fig. 1 is an overall schematic view of a hydraulic oil circulation cooling system of a telescopic boom forklift truck according to the present invention;
FIG. 2 is a simplified schematic diagram of a hydraulic oil circulating cooling system of a reach truck according to the present invention;
FIG. 3 is a simplified schematic diagram of another hydraulic oil circulating cooling system according to the present invention;
FIG. 4 is a simplified schematic diagram of yet another hydraulic oil circulating cooling system according to the present invention;
in the figure: 1. a source of hydraulic oil; 2. a first hydraulic oil pipe; 3. a hydraulic power source; 4. a hydraulic oil pipe II; 5. a hydraulic actuator; 6. a hydraulic oil pipe III; 7. a front steering drive axle; 8. a hydraulic oil pipe six; 9. a rear steering drive axle; 10. a hydraulic oil pipe IV; 11. a heat sink; 12. and a hydraulic oil pipe five.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, a hydraulic oil circulating cooling system of a telescopic boom forklift comprises a hydraulic oil source 1, a hydraulic power source 3, a hydraulic actuator 5, an axle box cavity (a front steering drive axle 7 and a rear steering drive axle 9) and a radiator 11 which are connected in series, the hydraulic oil source 1 is connected with the hydraulic power source 3 through a first hydraulic oil pipe 2, the hydraulic power source 3 is connected with the hydraulic actuating element 5 through a second hydraulic oil pipe 4, the hydraulic actuating element 5 is connected with the front steering drive axle 7 through a hydraulic oil pipe III 6, a hydraulic oil pipe six 8 is connected between the front steering drive axle 7 and the rear steering drive axle 9, the rear steering drive axle 9 is connected with the radiator 11 through a hydraulic oil pipe four 10, and the radiator 11 is connected with the hydraulic oil source 1 through a hydraulic oil pipe five 12; hydraulic oil and an extreme pressure antiwear agent are injected into the hydraulic oil source 1.
This hydraulic oil circulative cooling system is used for the hydraulic oil circulative cooling system of whole car overall arrangement, all brings the whole car essential element into hydraulic oil circulative cooling system, carries out the whole car cooling, very big improvement the system heat-sinking capability to it diminishes to independent radiating radiator power demand, does not need special radiator 11 and hydraulic tank even, changes in the structure upgrading optimization of whole car. The invention is suitable for various engineering machinery vehicles and has high popularization and applicability.
The hydraulic oil circulating cooling system brings the front steering drive axle 7 and the rear steering drive axle 9 of the vehicle into the circulating cooling system, and makes full use of the larger metal surface area of the axle box cavity to carry out quick heat dissipation, so that the requirement of the system on a radiator is reduced, the arrangement of the whole vehicle is more reasonable, and the weight of the whole vehicle is reduced; in addition, the circulating cooling system can share the hydraulic oil and the extreme pressure antiwear agent, better protects gear parts while cooling, and has better lubricating and heat dissipating effects on various gear parts and transmission parts in a hydraulic actuating element and a bridge box cavity.
This hydraulic oil circulative cooling system carries out the circulative cooling in the complete machine system with fluid, enlarges the natural cooling area to fluid in the system maintains lower horizontal temperature, is favorable to prolonging the life-span of hydraulic system inner seal spare, and this hydraulic oil circulative cooling system can have higher system radiating efficiency, has reduced vehicle cooling system energy consumption.
The front steering drive axle 7 and the rear steering drive axle 9 are provided with internal spaces, oil lubrication is needed in the operation process, the front steering drive axle 7 and the rear steering drive axle 9 are connected into a cooling system, oil can successively pass through the front steering drive axle 7 and the rear steering drive axle 9, the large surface areas of the metal shells of the front steering drive axle 7 and the rear steering drive axle 9 are utilized for heat dissipation, the heat dissipation effect is good, and parts of a vehicle are fully utilized.
Because the front steering drive axle 7 and the rear steering drive axle 9 are utilized for circularly radiating heat, even if the radiator 11 is still used in a radiating system, the radiator 11 can be set to be a type with small volume and low power consumption, so that the occupied space is reduced, the weight is lightened, and the consumption of vehicle energy is reduced.
Further, a plurality of heat dissipation fins are respectively arranged on the peripheral surfaces of the metal box bodies of the front steering drive axle 7 and the rear steering drive axle 9. The arrangement of the heat dissipation fins can further improve the heat dissipation capability of the front steering drive axle 7 and the rear steering drive axle 9.
Further, the hydraulic oil source 1 is an oil hydraulic tank, the hydraulic power source 3 is a pump, the hydraulic actuator 5 is a hydraulic motor reducer, and the radiator 11 is a tubular radiator into which oil can enter.
Furthermore, the first hydraulic oil pipe 2, the second hydraulic oil pipe 4, the third hydraulic oil pipe 6, the fourth hydraulic oil pipe 10, the fifth hydraulic oil pipe 12 and the sixth hydraulic oil pipe 8 are respectively hoses, hard pipes or pipes combined by the hoses and the hard pipes, so that the connection and the combination are convenient.
Further, the hydraulic oil source 1, the hydraulic power source 3, the hydraulic actuator 5, the front steering drive axle 7, the rear steering drive axle 9 and the radiator 11 are respectively and fixedly mounted on a frame of the whole vehicle, the front steering drive axle 7 and the rear steering drive axle 9 are respectively arranged on the front side and the rear side, the hydraulic power source 3 and the hydraulic actuator 5 are arranged at a position, close to a middle axle, of the frame, and the hydraulic oil source 1 and the radiator 11 are respectively arranged at neutral positions at two sides of the axle.
Further, in the cooling method of the hydraulic oil circulating cooling system of the telescopic boom forklift, oil enters the hydraulic power source 3 from the hydraulic oil source 1 through the hydraulic oil pipe I2, under the drive of the hydraulic power source 3, oil enters the hydraulic actuator 5 through the second hydraulic oil pipe 4 to drive the motor to act, high-temperature oil generated by the rotation of the motor enters the front steering drive axle 7 through the third hydraulic oil pipe 6, partial heat is emitted in the front steering drive axle 7 by virtue of a large-area metal axle housing, high-temperature oil enters the rear steering drive axle 9 through the hydraulic oil pipe six 8, partial heat is emitted again by means of a large-area metal axle housing in the rear steering drive axle 9, finally high-temperature oil enters the radiator 11 through the fourth hydraulic oil pipe 10 to be cooled finally, and cooled low-temperature oil returns to the hydraulic oil source 1 through the fifth hydraulic oil pipe 12 to complete primary circulating cooling.
Example two:
as another cooling method of the present application, the radiator in the first embodiment is removed, and the hydraulic oil pipe four 10 and the hydraulic oil pipe five 12 are directly communicated; the air cooling radiator is arranged at the position of the radiator and used for accelerating the flow between the front steering drive axle 7 and the rear steering drive axle 9 and cooling air, does not participate in oil circulation, and can enhance the heat dissipation efficiency of the axle housing.
Example three:
as shown in fig. 3, as another cooling method of this application, remove the radiator 11 in the first embodiment to 3 tons of telescopic boom fork truck are taken as an example, can save at least 30KG weight and 25L space occupation, will hydraulic oil pipe four 10 with five 12 direct intercommunications in hydraulic oil pipe, directly utilize preceding steering drive axle 7 with the metal axle housing of rear steering drive axle 9 dispels the heat, and whole circulative cooling system's fluid temperature can maintain about 65 ℃, satisfies hydraulic system normal operating oil temperature (below 80 ℃) demand.
The oil flow path is from hydraulic oil source 1 through hydraulic oil pipe 2 gets into hydraulic power source 3 under hydraulic power source 3's drive, oil through hydraulic oil pipe two 4 gets into hydraulic actuator 5 driving motor moves, and the high temperature oil that the motor rotation produced gets into through hydraulic oil pipe three 6 preceding steering drive axle 7 rely on the metal axle housing of large tracts of land to give off partial heat in preceding steering drive axle 7, and the fluid that has fallen the temperature is through again hydraulic oil pipe six 8 gets into rear steering drive axle 9 rely on the metal axle housing of large tracts of land to give off partial heat once more in the rear steering drive axle 9, and final oil temperature falls to the required temperature of system normal operating, accomplishes once only circulative cooling this moment. In the embodiment, the heat dissipation efficiency can be improved by designing the heat dissipation fins on the surface of the box body and increasing the heat dissipation area.
After the mode is adopted, the heat dissipation cooling effect is ensured, meanwhile, one radiator is directly reduced, the weight of the whole machine is reduced, the vacant position can be used for installing other parts, and the utilization rate of the internal space is optimized.
Example four:
as shown in fig. 4, as another cooling method of the present application, the radiator 11 and the hydraulic oil source 1 are removed at the same time, the four hydraulic oil pipes 10, the five hydraulic oil pipes 12 and the one hydraulic oil pipe 2 are connected in series and communicated to form a pipeline, and hydraulic oil containing an extreme pressure antiwear agent is directly arranged in the pipeline for circulation; the oil liquid flow path is that the oil liquid enters the hydraulic power source 3 from the rear steering drive axle 9, under the drive of the hydraulic power source 3, the oil liquid enters the hydraulic actuator 5 through the second hydraulic oil pipe 4 to drive the motor to move, high-temperature oil liquid generated by the rotation of the motor enters the front steering drive axle 7 through the third hydraulic oil pipe 6, the heat is radiated by a large-area metal axle housing in the front steering drive axle 7, the cooled oil liquid enters the rear steering drive axle 9 through the sixth hydraulic oil pipe 8, the residual heat is radiated again by a large-area metal axle housing in the rear steering drive axle 9, the temperature of the oil liquid is finally reduced to the temperature required by the normal operation of the system, and then, one-time circulating cooling is completed; and returning the cooled oil to the hydraulic power source through a pipeline for next circulation.
After adopting this kind of mode, when guaranteeing the refrigerated effect of heat dissipation, directly reduce radiator 11 and hydraulic oil source 1, make the weight of complete machine further reduced, and the position of vacating can be used for installing more other parts, make the space of complete car obtain further optimization, the structure can be compacter, take 3 tons of flexible arm fork truck as the example, can save at least 50KG weight and 100L space and occupy, the fluid temperature of whole circulative cooling system can be maintained about 75 ℃, satisfy the normal operating oil temperature demand of hydraulic system (below 80 ℃). And the front steering drive axle 7 and the rear steering drive axle 9 are utilized to temporarily store oil, and the oil can be recycled in the whole system without independently arranging a hydraulic oil tank.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a telescopic boom fork truck's hydraulic oil circulative cooling system, its characterized in that, including series connection's hydraulic oil source, hydraulic power source, hydraulic actuator, axle box cavity and radiating element, the hydraulic oil source with connect through hydraulic oil pipe one between the hydraulic power source, hydraulic power source with connect through hydraulic oil pipe two between the hydraulic actuator, the hydraulic actuator with connect through hydraulic oil pipe three between the axle box cavity, axle box cavity with connect through hydraulic oil pipe four between the radiating element, radiating element with connect through hydraulic oil pipe five between the hydraulic oil source, the injection has hydraulic oil in the hydraulic oil source, perhaps contains the hydraulic oil of extreme pressure antiwear agent.
2. The hydraulic oil circulation cooling system of a telescopic boom forklift truck according to claim 1, wherein said axle box cavity includes at least one of a front axle middle box and a rear axle middle box; the front axle middle box and the rear axle middle box are also connected through a hydraulic oil pipe.
3. The hydraulic oil circulation cooling system for a telescopic boom forklift as recited in claim 1, wherein a plurality of heat dissipation fins are further provided on an outer peripheral surface of the metal box body of the axle box cavity.
4. The hydraulic oil circulation cooling system of the telescopic boom forklift as claimed in claim 1, wherein the hydraulic oil source is an oil tank, the hydraulic power source is various pumps, the hydraulic actuator is a hydraulic motor reduction gearbox or a hydraulic continuously variable transmission, and the heat dissipation element includes but is not limited to a shell and tube radiator and a plate radiator.
5. The hydraulic oil circulation cooling system for a telescopic boom forklift as recited in claim 1, wherein the first hydraulic oil pipe, the second hydraulic oil pipe, the third hydraulic oil pipe, the fourth hydraulic oil pipe, and the fifth hydraulic oil pipe are hoses, hard pipes, or pipes combining soft and hard.
6. The hydraulic oil circulation cooling system of a forklift with telescopic boom according to claim 1, wherein the hydraulic oil source, the hydraulic power source, the hydraulic actuator, the axle box cavity and the heat dissipation element are respectively and fixedly mounted on a frame of a whole vehicle, the axle box cavity is respectively arranged on the front side and the rear side, the hydraulic power source and the hydraulic actuator are arranged at a position of the frame close to a middle axle, and the hydraulic oil source and the heat dissipation element are respectively arranged at two side neutral positions of the axle.
7. A circulation cooling method of a hydraulic oil circulation cooling system of a telescopic boom forklift truck as claimed in claim 2, characterized in that oil enters the hydraulic power source from the hydraulic oil source through the first hydraulic oil pipe, under the drive of the hydraulic power source, oil enters the hydraulic execution element through the second hydraulic oil pipe to drive the actuator to act, high-temperature oil generated by the rotation of the hydraulic executive component enters the front axle middle box through a hydraulic oil pipe III, partial heat is emitted in the front axle middle box by virtue of a large-area metal axle housing, high-temperature oil enters the rear axle middle box through a pipeline, and part of heat is dissipated again by depending on a large-area metal axle housing in the rear axle middle box, the final high-temperature oil enters the radiating element through the hydraulic oil pipe four to be finally cooled, and the cooled low-temperature oil returns to the hydraulic oil source through the hydraulic oil pipe five to complete one-time circulating cooling.
8. The hydraulic oil circulation cooling system of a telescopic boom forklift truck according to claim 1, wherein the heat radiating member is removed to directly communicate the hydraulic oil pipe four with the hydraulic oil pipe five; and an air-cooled radiator is arranged at the position of the radiating element and used for accelerating the flow between the bridge box cavity and the cooling air.
9. The hydraulic oil circulation cooling system for a telescopic boom forklift as recited in claim 1, wherein said heat dissipating member is removed, said hydraulic oil pipe four and said hydraulic oil pipe five are directly connected, and a metal axle housing of said axle housing cavity is directly utilized for heat dissipation.
10. The hydraulic oil circulation cooling system for a telescopic boom forklift as recited in claim 1, wherein said heat radiating element and said hydraulic oil source are removed, said hydraulic oil pipe four, said hydraulic oil pipe five and said hydraulic oil pipe one are connected in series and communicated as a single pipe, and hydraulic oil is directly provided in the pipe for circulation; the oil liquid flow path is that the oil liquid enters the hydraulic power source from the bridge box cavity, under the drive of the hydraulic power source, the oil liquid enters the hydraulic execution element through the hydraulic oil pipe II to drive the actuator to act, high-temperature oil liquid generated by the rotation of the actuator enters the bridge box cavity through the hydraulic oil pipe III, heat is emitted in the bridge box cavity by virtue of a large-area metal axle housing, the temperature of the oil liquid is finally reduced to the temperature required by the normal operation of the system, and then one-time circulating cooling is completed; and returning the cooled oil to the hydraulic power source through a pipeline for next circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210296325.3A CN114810735A (en) | 2022-03-24 | 2022-03-24 | Hydraulic oil circulating cooling system and circulating cooling method of telescopic boom forklift |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210296325.3A CN114810735A (en) | 2022-03-24 | 2022-03-24 | Hydraulic oil circulating cooling system and circulating cooling method of telescopic boom forklift |
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| CN114810735A true CN114810735A (en) | 2022-07-29 |
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| CN202210296325.3A Pending CN114810735A (en) | 2022-03-24 | 2022-03-24 | Hydraulic oil circulating cooling system and circulating cooling method of telescopic boom forklift |
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| CN (1) | CN114810735A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5960748A (en) * | 1997-05-02 | 1999-10-05 | Valeo, Inc. | Vehicle hydraulic component support and cooling system |
| CN208200279U (en) * | 2018-04-09 | 2018-12-07 | 安徽好运机械有限公司 | A kind of hydraulic oil cooling system of telescopic arm All-terrain Forklift |
| CN111016540A (en) * | 2019-12-24 | 2020-04-17 | 广西柳工机械股份有限公司 | Control method of drive axle heat dissipation system, drive axle heat dissipation system and engineering vehicle |
| US20200171913A1 (en) * | 2018-12-03 | 2020-06-04 | Hyundai Motor Company | Thermal management system for vehicle |
| CN211449230U (en) * | 2019-12-03 | 2020-09-08 | 广西柳工机械股份有限公司 | Oil heat dissipation hydraulic system for drive axle housing of loader |
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2022
- 2022-03-24 CN CN202210296325.3A patent/CN114810735A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5960748A (en) * | 1997-05-02 | 1999-10-05 | Valeo, Inc. | Vehicle hydraulic component support and cooling system |
| CN208200279U (en) * | 2018-04-09 | 2018-12-07 | 安徽好运机械有限公司 | A kind of hydraulic oil cooling system of telescopic arm All-terrain Forklift |
| US20200171913A1 (en) * | 2018-12-03 | 2020-06-04 | Hyundai Motor Company | Thermal management system for vehicle |
| CN211449230U (en) * | 2019-12-03 | 2020-09-08 | 广西柳工机械股份有限公司 | Oil heat dissipation hydraulic system for drive axle housing of loader |
| CN111016540A (en) * | 2019-12-24 | 2020-04-17 | 广西柳工机械股份有限公司 | Control method of drive axle heat dissipation system, drive axle heat dissipation system and engineering vehicle |
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Application publication date: 20220729 |