CN117869575A - Engineering machinery cooling system - Google Patents
Engineering machinery cooling system Download PDFInfo
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- CN117869575A CN117869575A CN202410126650.4A CN202410126650A CN117869575A CN 117869575 A CN117869575 A CN 117869575A CN 202410126650 A CN202410126650 A CN 202410126650A CN 117869575 A CN117869575 A CN 117869575A
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- 238000001816 cooling Methods 0.000 title claims abstract description 144
- 230000007246 mechanism Effects 0.000 claims abstract description 193
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 78
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 230000017525 heat dissipation Effects 0.000 claims description 27
- 238000010276 construction Methods 0.000 claims 9
- 239000003921 oil Substances 0.000 abstract description 178
- 239000010705 motor oil Substances 0.000 abstract description 44
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000009467 reduction Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to the technical field of engineering machinery and discloses an engineering machinery cooling system which comprises at least 2 cooling units which are connected in parallel, wherein each cooling unit comprises a traction mechanism, a speed reducing mechanism and a frame, the traction mechanism is connected with the speed reducing mechanism, the end face of the traction mechanism and the end face of the speed reducing mechanism are respectively connected with the frame in a sealing way, and the three cooling units form a sealing cavity which is used as a cooling oil pool of the cooling unit. The beneficial effects of the invention are as follows: the sealed cavity is formed by the end face of the speed reducer, the end face of the traction motor and the frame and is used for storing engine oil, the engine oil temporary storage function of the traditional axle bottom shell is replaced, the structure for storing engine oil is not independently designed, the pipeline arrangement is saved, and the whole machine is more compact.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and relates to an engineering machinery cooling system.
Background
The speed reducing mechanism of the large-sized engineering machinery is huge and is usually arranged in an axle, a certain amount of engine oil is stored in a bottom shell of the axle, the engine oil is driven by a gear set to lubricate and cool the gear set, and then the temperature of the engine oil is increased and flows back to the bottom shell. The cooling system is generally designed to extract high-temperature engine oil from the axle bottom shell, convey the engine oil to heat exchange components such as a radiator and the like for cooling, and convey the cooled engine oil back to the axle bottom shell so as to reduce the overall oil temperature and indirectly cool the gear set of the speed reducing mechanism. The design of the cooling system occupies a large space to arrange engine oil and the speed reducing mechanism, and on the other hand, the cooling efficiency is low because the engine oil and the speed reducing mechanism are indirectly cooled on the gear set of the speed reducing mechanism.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an engineering machinery cooling system, which is characterized in that a sealed cavity is formed by the end face of a speed reducer, the end face of a traction motor and a frame for storing engine oil, so that the engine oil temporary storage function of a traditional axle bottom shell is replaced, the structure for storing engine oil is not independently designed, the pipeline arrangement is saved, and the whole body is more compact.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides an engineering machine tool cooling system, includes 2 at least cooling units that are connected in parallel each other, cooling unit includes traction mechanism, reduction gears and frame, traction mechanism is connected with reduction gears, traction mechanism's terminal surface and reduction gears's terminal surface respectively with frame sealing connection, the three forms sealed cavity, sealed cavity is as cooling oil pool of cooling unit.
The speed reducing mechanism, the traction mechanism, the corresponding cooling oil paths and the like of each group form a cooling unit which is distributed and arranged, and the cooling units do not interfere with each other and can be independently arranged at the positions of the front wheels or the rear wheels.
Further, the traction mechanism can be a traction motor or a hydraulic walking motor; the speed reducing mechanism is a speed reducer.
Further, the end face of the traction mechanism and the end face of the speed reducing mechanism are respectively connected with the frame through bolts, so that the relative positions of the traction mechanism, the speed reducing mechanism and the frame are not changed. Still further, every two connection faces are sealed by adopting sealing rings. Preferably, the traction mechanism and the speed reducing mechanism are integrally arranged.
Further, a traction mechanism oil inlet and a traction mechanism oil outlet are formed in the traction mechanism, a speed reduction mechanism oil inlet and a speed reduction mechanism oil outlet are formed in the speed reduction mechanism, and the traction mechanism oil outlet and the speed reduction mechanism oil outlet are communicated with the sealed cavity.
Further, the cooling system further comprises an oil suction pump and a radiator, wherein the outlet end of the radiator is connected with the oil inlet of the traction mechanism and the oil inlet of the speed reducing mechanism respectively through pipelines, the sealed cavity is connected with the inlet end of the oil suction pump through an oil return passage, and the outlet end of the oil suction pump is connected with the inlet end of the radiator.
The cooling system of the invention utilizes the mutual coordination of the end face of the speed reducing mechanism, the end face of the traction mechanism, the assembly spigot of the frame and the assembly end face to form a sealed cavity, thereby replacing the engine oil temporary storage function of the traditional axle bottom shell. The step of extracting oil from the axle sump in a conventional cooling system arrangement is changed to extracting oil from the sealed cavity described above. The step of injecting the cooled engine oil into the axle bottom shell in the traditional cooling system arrangement is changed into the step of directly spraying the cooled engine oil to the speed reducer gear set for direct cooling.
The working process of the cooling system of the invention is as follows:
cooling of the reduction mechanism: the cooled engine oil flowing out of the radiator directly enters the speed reducing mechanism through an oil inlet of the speed reducing mechanism, the cooled engine oil is directly sprayed onto a speed reducer gear set and a speed reducer main shaft spline to be cooled through an internal oil way in the speed reducing mechanism, and the heated engine oil flows back into the sealed cavity through an oil outlet of the speed reducing mechanism.
Cooling of the traction mechanism: the cooled engine oil flowing out of the radiator enters the traction mechanism through an oil inlet of the traction mechanism, flows along a shell of the traction mechanism, cools the traction mechanism, and the warmed engine oil flows back into the sealed cavity through an oil outlet of the traction mechanism.
And the oil with higher temperature in the sealed cavity is pumped to the radiator by the oil suction pump through the oil return duct to be cooled, so that the whole circulation process of the cooling engine oil is completed.
Furthermore, in order to ensure the tightness of the sealed cavity, methods such as a rubber sealing ring, a combined sealing gasket, sealing glue and the like are adopted, so that the leakage amount of cooling oil is reduced.
Further, a frame flange is arranged at the end part of the frame, and a third connecting hole arranged on the inner ring and a fourth connecting hole arranged on the outer ring are arranged on the frame flange; the end face of the speed reducing mechanism is provided with a second connecting hole, and the end face of the traction mechanism is provided with a first connecting hole; the first connecting hole is matched with the third connecting hole, the traction mechanism is connected with the frame flange through the first connecting hole and the third connecting hole, the second connecting hole is matched with the fourth connecting hole, and the speed reducing mechanism is connected with the frame flange through the second connecting hole and the fourth connecting hole.
Further, the speed reducing mechanism is a speed reducer, and the speed reducer comprises a speed reducer heat dissipation oil inlet, a gear set cooling oil circuit, a spline cooling oil circuit and a speed reducer heat dissipation oil outlet; the speed reducer cooling oil inlet is an oil inlet of the speed reducing mechanism, the speed reducer cooling oil outlet is an oil outlet of the speed reducing mechanism, cooled engine oil flowing out of the radiator directly enters the speed reducer through the speed reducer cooling oil inlet, the cooled engine oil is directly sprayed onto the gear set and the spline for cooling in the speed reducer through the gear set cooling oil way and the spline cooling oil way, and heated engine oil flows back into the sealed cavity through the speed reducer cooling oil outlet.
Further, the speed reducing mechanism is further provided with a cooling oil filling port, and the cooling oil filling port is communicated with a gear set cooling oil way and used for filling engine oil into the speed reducing mechanism and even the whole cooling unit. The cooling unit further comprises a sealing plug, and the sealing plug is arranged at the cooling oil filling port and is used for preventing engine oil from overflowing from the cooling oil filling port when the system is in operation.
Further, the traction mechanism comprises a traction mechanism heat-dissipation oil inlet, a traction mechanism heat-dissipation oil outlet and an oil return oil duct, wherein the traction mechanism heat-dissipation oil inlet is an oil inlet of the traction mechanism, and the traction mechanism heat-dissipation oil outlet is an oil outlet of the traction mechanism and is communicated with the sealed cavity; the oil return duct is arranged at the lower part of the traction mechanism; the oil return duct comprises an oil return duct inlet and an oil return duct outlet which are respectively arranged at two ends of the oil return duct; the oil return duct inlet is arranged on the end face of the traction mechanism (namely a flange of the traction mechanism) and is communicated with the sealed cavity; and the outlet of the oil return passage is connected with an oil suction pump.
Further, the traction mechanism cooling oil inlet is arranged at the rear part of the traction mechanism, and the traction mechanism cooling oil outlet is arranged at the front part of the traction mechanism.
The traction mechanism further comprises a link spline, and the speed reducer further comprises a speed reducer main shaft spline; the traction mechanism is in transmission connection with the speed reducer through a matched link spline and a speed reducer main shaft spline.
Further, the frame flange may be welded to the frame, or may be integrally manufactured with the frame body. Similarly, the end face of the traction mechanism is a traction mechanism flange, and the end face of the speed reducing mechanism is a speed reducer flange.
Further, a sealing ring groove is formed in the end face of the frame flange, and the sealing rings are communicated and used for placing a first sealing ring. Preferably, the sealing ring is a first O-ring.
Further, the heat dissipation oil inlet of the speed reducer is arranged at the high position of the outer side of the flange of the speed reducer and is communicated with the outside; the heat dissipation oil outlet of the speed reducer is arranged at the lower part of the inner side and is communicated with the sealed cavity.
Further, the end face of the traction mechanism (namely the traction mechanism flange) is provided with a first air vent, the frame flange is provided with a second air vent, the second air vent is a through hole communicated with the first air vent, and the first air vent is arranged at the upper part of the sealed cavity. The first air holes are inclined through holes which are formed from the end face of the traction mechanism flange to the flange body from bottom to top.
Further, the cooling unit of the invention further comprises a temperature sensor, wherein the temperature sensor is arranged at the outlet of the oil return duct and is used for detecting the oil temperature of cooling oil in the sealed cavity.
According to the invention, the oil duct outlet of each cooling unit is provided with the temperature sensor, and the cooling units are not mutually interfered, so that the temperature sensor can be used for realizing independent temperature monitoring of the sealed cavity in each cooling unit, and when a fault with overhigh temperature occurs, the fault point can be rapidly positioned through the arrangement.
Compared with the prior art, the invention provides an engineering machinery cooling system, which has the following beneficial effects:
(1) According to the invention, the sealed cavity is formed by the end face of the speed reducer, the end face of the traction motor and the frame for storing engine oil, so that the engine oil temporary storage function of the traditional axle bottom shell is replaced, a structure for storing engine oil is not independently designed, the pipeline arrangement is saved, and the whole device is more compact.
(2) The cooling system provided by the invention directly sprays the cooled engine oil to the speed reducer gear set and the speed reducer main shaft spline of the speed reducer mechanism, so that the speed reducer gear set and the speed reducer main shaft spline are forcedly cooled, and the cooling efficiency is higher.
(3) When the traction mechanism is a driving motor, the power and the rotating speed of the independent driving motor are not completely the same, the relatively independent sealed cavities can prevent the heat dissipation of the motors from affecting each other, and meanwhile, the independent temperature sensor for temperature detection is arranged, so that the overheat fault of the motor can be found in time, the time spent for fault judgment is reduced, and the loss caused by the fault is reduced.
Drawings
FIG. 1 is a schematic diagram of a cooling fluid circulation of the present invention;
FIG. 2 is a schematic rear perspective view of the traction mechanism of the present invention;
FIG. 3 is a schematic perspective view of a traction mechanism of the present invention;
FIG. 4 is a schematic perspective view of a reduction mechanism in cross section in accordance with the present invention;
FIG. 5 is a schematic perspective view of a frame of the present invention;
FIG. 6 is a schematic perspective view of the traction mechanism, the speed reducing mechanism and the frame of the present invention in cross section after assembly;
FIG. 7 is a schematic view of a longitudinal partially cut-away perspective view of the traction mechanism, the speed reducing mechanism and the frame at the vent holes after assembly;
fig. 8 is a schematic view of a longitudinal partial section of the traction mechanism, the speed reducing mechanism and the frame at the vent holes after the traction mechanism, the speed reducing mechanism and the frame are assembled.
The meaning of the reference numerals in the figures is: 1. traction mechanism, 11, traction mechanism flange, 12, link spline, 13, traction mechanism cooling oil inlet, 14, traction mechanism cooling oil outlet, 15, oil return duct, 16, oil return duct inlet, 17, oil return duct outlet, 111, first air vent, 112, first connecting hole, 2, speed reducer, 21, speed reducer flange, 22, speed reducer main shaft spline, 23, speed reducer cooling oil inlet, 24, gear set cooling oil way, 25, spline cooling oil way, 26, speed reducer cooling oil outlet, 27, cooling oil filler, 28, second connecting hole, 29, speed reducer gear set, 3, frame, 31, frame flange, 311, second air vent, 312, third connecting hole, 313, fourth connecting hole, 314, sealing ring groove, 4, sealing cavity, 41, first O-ring, 42, second O-ring, 43, sealing plug.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the cooling system of the invention comprises at least 2 cooling units which are connected in parallel, wherein the cooling units comprise a traction mechanism 1, a speed reducing mechanism and a frame 3, the traction mechanism 1 is connected with the speed reducing mechanism, the end face of the traction mechanism 1 and the end face of the speed reducing mechanism are respectively connected with the frame 3 in a sealing way, the three parts form a sealing cavity 4, and the sealing cavity 4 is used as a cooling oil pool of the cooling unit.
The traction mechanism 1 is provided with a traction mechanism 1 oil inlet and a traction mechanism 1 oil outlet, the speed reducing mechanism is provided with a speed reducing mechanism oil inlet and a speed reducing mechanism oil outlet, and the traction mechanism 1 oil outlet and the speed reducing mechanism oil outlet are communicated with the sealed cavity 4.
The cooling system also comprises an oil suction pump and a radiator, wherein the outlet end of the radiator is respectively connected with the oil inlet of the traction mechanism 1 and the oil inlet of the speed reducing mechanism through a pipeline (namely an oil way I), the sealed cavity 4 is connected with the inlet end of the oil suction pump through an oil return oil passage 15 and an oil way II, and the outlet end of the oil suction pump is connected with the inlet end of the radiator.
The speed reducing mechanism, the traction mechanism 1, the corresponding cooling oil paths and the like of each group form a cooling unit which is distributed and arranged, and the cooling units do not interfere with each other and can be independently arranged at the positions of the front wheels or the rear wheels.
In a specific implementation manner of this embodiment, in order to ensure the tightness of the sealed cavity 4, methods such as a rubber sealing ring, a combined sealing gasket, a sealant and the like are adopted to reduce the leakage amount of the cooling oil.
In a specific implementation manner of the embodiment, as shown in fig. 3 to 5, a frame flange 31 is arranged at the end of the frame 3, a third connecting hole 312 arranged at an inner ring and a fourth connecting hole 313 arranged at an outer ring are arranged on the frame flange 31, and a plurality of third connecting holes 312 and fourth connecting holes 313 are uniformly distributed along the circumferential direction of the frame flange 31; the end face of the speed reducing mechanism is provided with a plurality of second connecting holes 28, and the second connecting holes 28 are uniformly distributed along the circumferential direction of the end face of the speed reducing mechanism; the end face of the traction mechanism 1 is provided with a plurality of first connecting holes 112, and the first connecting holes 112 are uniformly distributed along the circumferential direction of the end face of the traction mechanism 1; the first connecting hole 112 and the third connecting hole 312 are arranged in a matching way, the traction mechanism 1 and the frame flange 31 are connected through the first connecting hole 112 and the third connecting hole 312, the second connecting hole 28 and the fourth connecting hole 313 are arranged in a matching way, and the speed reducing mechanism and the frame flange 31 are connected through the second connecting hole 28 and the fourth connecting hole 313.
In a specific implementation manner of this embodiment, all the bolts installed outwards from the sealed cavity 4 on the traction mechanism flange 11 and the speed reducer flange 21 are designed with blind holes, that is, the first connecting hole 112, the second connecting hole 28, the third connecting hole 312 and the fourth connecting hole 313 are designed with blind holes, and the sealant is coated on the threads.
In a specific implementation of the present embodiment, the speed reducing mechanism is a speed reducer 2, and as shown in fig. 4 and 6, the speed reducer 2 includes a speed reducer heat dissipation oil inlet 23, a gear set cooling oil path 24, a spline cooling oil path 25, and a speed reducer heat dissipation oil outlet 26; the speed reducer cooling oil inlet 23 is an oil inlet of a speed reducing mechanism, the speed reducer cooling oil outlet 26 is an oil outlet of the speed reducing mechanism, cooled engine oil flowing out of the radiator directly enters the speed reducer 2 through the speed reducer cooling oil inlet 23, the cooled engine oil is directly sprayed onto the gear set and the spline for cooling in the speed reducer 2 through the gear set cooling oil way 24 and the spline cooling oil way 25, and heated engine oil flows back into the sealed cavity 4 through the speed reducer cooling oil outlet 26.
In a specific implementation manner of this embodiment, the speed reducer cooling oil inlet 23 is disposed at a high position outside the speed reducer flange 21 and is communicated with the outside; the speed reducer cooling oil outlet 26 is arranged at the lower part of the inner side of the speed reducer flange 21 and is communicated with the sealed cavity 4.
In a specific implementation of the present embodiment, as shown in fig. 4, a cooling oil filler port 27 is provided in the speed reducer 2, so that it can be communicated from the outside to the gear train cooling oil passage 24 and the spline cooling oil passage 25. At the time of initial assembly, the entire cooling unit may be filled with cooling oil through the cooling oil filling port 27. As shown in fig. 7, the cooling unit of the present invention further includes a sealing plug 43, and the sealing plug 43 is installed at the cooling oil filling port 27 to prevent oil from overflowing from the cooling oil filling port 27 when the cooling unit is operated.
In a specific implementation manner of this embodiment, as shown in fig. 2 and 3, the traction mechanism 1 includes a traction mechanism heat dissipation oil inlet 13, a traction mechanism heat dissipation oil outlet 14, and an oil return passage 15, where the traction mechanism heat dissipation oil inlet 13 is an oil inlet of the traction mechanism 1, and the traction mechanism heat dissipation oil outlet 14 is an oil outlet of the traction mechanism 1 and is communicated with the sealed cavity 4; the oil return duct 15 is arranged at the lower part of the traction mechanism 1; the oil return duct 15 includes an oil return duct inlet 16 and an oil return duct outlet 17 respectively provided at both ends of the oil return duct 15; the oil return channel inlet 16 is arranged on the end surface of the traction mechanism 1 (namely the traction mechanism flange 11) and is communicated with the sealed cavity 4; the oil return passage outlet 17 is connected with an oil suction pump.
As shown in fig. 3 and 4, the traction mechanism 1 further includes a linking spline 12, and the speed reducer 2 further includes a speed reducer main shaft spline 22; the traction mechanism 1 is in transmission connection with the speed reducer 2 through a matched link spline 12 and a speed reducer main shaft spline 22.
In a specific implementation of this embodiment, as shown in fig. 6 and 7, in order to ensure the tightness of the sealed cavity 4, the traction mechanism flange 11 and the frame 3 are sealed by adopting end faces with finished surfaces Ra less than or equal to 3.2 in a matching manner. The end face of the frame flange 31 is provided with a sealing ring groove 314, and the sealing ring is communicated with the first sealing ring. Preferably, the sealing ring is a first O-ring 41. The speed reducer flange 21 and the frame 3 are in clearance fit in the radial direction, the end face of the finish surface Ra is smaller than or equal to 3.2 for sealing in the axial direction, and a second O-shaped ring 42 is used for sealing at the chamfer.
It should be noted that: before the whole vehicle runs, the oil suction pump needs to be started first to ensure that the cooling oil circulates to all oil ways of the whole cooling system so as to ensure the normal running of the whole oil way.
Example 2
Example 2 differs from example 1 in that: a gear set cooling oil way 24 in the speed reducer 2 is arranged near the speed reducer gear set 29, and because the speed reducer gear set 29 rotates and is sequentially close to an oil duct outlet, indirect engine oil is sprayed to all gears for cooling; the spline cooling oil path 25 is directly led to the main shaft spline 22 of the speed reducer and sprayed to the spline for cooling. In this way, the cooling unit of the invention can directly spray the cooled engine oil onto the speed reducer gear set 29 and the speed reducer main shaft spline 22, so as to forcedly cool the speed reducer gear set 29 and the speed reducer main shaft spline 22, and the cooling efficiency is higher.
Example 3
Example 3 differs from example 2 in that: as shown in fig. 7 and 8, in order to ensure that the oil pump can normally pump out oil with higher temperature, a first ventilation hole 111 is formed in the traction mechanism flange 11, and a second ventilation hole 311 is formed in the frame flange 31. The second ventilation holes 311 are through holes communicating with the first ventilation holes 111. The position of the first ventilation hole 111 corresponds to the higher position of the sealed cavity 4 and is used for communicating the internal atmosphere and the external atmosphere of the sealed cavity 4, and the first ventilation hole 111 and the second ventilation hole 311 are used for ensuring that the sealed cavity 4 (namely a cooling oil tank for oil storage) is communicated with the external atmosphere, so that the internal pressure and the external pressure are the same, and the oil suction pump can more smoothly suck oil from the sealed cavity 4 and send the oil into heat exchange parts such as a radiator.
In a specific implementation manner of this embodiment, as shown in fig. 8, the first air holes 111 are inclined through holes formed from the end surface of the flange 11 of the traction mechanism to the flange body from bottom to top, so that oil is difficult to splash out of the first air holes 111, and the oil entering the first air holes 111 flows back into the sealed cavity 4 under the influence of gravity, so that the oil is more difficult to splash out, and the loss of cooling oil is reduced.
The cooling system of example 3 works as follows:
cooling of the speed reducer 2: the cooled engine oil flowing out of the radiator directly enters the speed reducer 2 through the speed reducer cooling oil inlet 23, the cooled engine oil is directly sprayed onto the speed reducer gear set 29 and the speed reducer main shaft spline 22 for cooling through the gear set cooling oil way 24 and the spline cooling oil way 25 in the speed reducer 2, and the heated engine oil flows back into the sealed cavity 4 through the speed reducer cooling oil outlet 26.
Cooling of the traction mechanism 1: the cooled engine oil enters the traction mechanism 1 through the traction mechanism heat dissipation oil inlet 13, flows along the shell of the traction mechanism 1 to cool the traction mechanism 1, and the heated engine oil flows back into the sealing cavity 44 through the traction mechanism heat dissipation oil outlet 14.
The oil with higher temperature in the sealed cavity 4 enters the oil return duct 15 through the oil return duct inlet 16, then exits from the oil return duct outlet 17, is pumped by the oil suction pump and returns to the radiator, and the whole circulation process of the cooling engine oil is completed.
Example 4
Specifically, a traction motor was selected as the traction mechanism 1 in example 4 to describe the cooling system of the present invention, and the cooling system of the present invention has the same structure when the other traction mechanism 1 is adopted.
When the traction mechanism 1 adopts an oil-cooled motor, a motor heat dissipation oil outlet (corresponding to the traction mechanism heat dissipation oil outlet 14) is arranged on the motor assembly end surface. After the motor is cooled, the cooling engine oil is led into the sealed cavity 4 through the heat-dissipating oil outlet of the motor, and the traction mechanism 1 is cooled and then is integrated into the sealed cavity 4.
In one embodiment of the present embodiment, as shown in fig. 2 and 3, the traction mechanism heat dissipation oil inlet 13 is provided at the rear of the traction mechanism 1, and the traction mechanism heat dissipation oil outlet 14 is provided at the front of the traction mechanism 1.
In a specific implementation manner of this embodiment, as shown in fig. 2 and fig. 3, the oil return passage 15 is integrated at the bottom of the motor, and a plurality of small holes are provided at the oil return passage inlet 16 as the oil inlet of the oil return passage 15. The design of a plurality of apertures can guarantee that structural strength does not lose too much simultaneously under the circumstances of guaranteeing oil return oil duct 15 oil inlet quantity. Preferably, the oil return passage 15 is provided at the bottom of the motor by welding.
Example 5
Example 5 differs from example 3 in that: the cooling unit in embodiment 5 further includes a temperature sensor (not shown in the drawings of the specification) provided at the return oil passage outlet 17 for detecting the oil temperature of the cooling oil in the sealed cavity 4 for fault monitoring.
According to the cooling system disclosed by the invention, the cooling units are not mutually interfered, the temperature sensor can be used for realizing independent temperature monitoring of the sealed cavity 4 in each cooling unit, and when an over-high-temperature fault occurs, the fault point can be rapidly positioned through the arrangement.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 engineering machine tool cooling system which characterized in that: the cooling unit comprises a traction mechanism, a speed reducing mechanism and a frame, wherein the traction mechanism is connected with the speed reducing mechanism, the end face of the traction mechanism and the end face of the speed reducing mechanism are respectively and hermetically connected with the frame, the end face of the traction mechanism and the end face of the speed reducing mechanism form a sealed cavity, and the sealed cavity is used as a cooling oil pool of the cooling unit.
2. A cooling system for a construction machine according to claim 1, wherein: the traction mechanism is provided with a traction mechanism oil inlet and a traction mechanism oil outlet, the speed reducing mechanism is provided with a speed reducing mechanism oil inlet and a speed reducing mechanism oil outlet, and the traction mechanism oil outlet and the speed reducing mechanism oil outlet are communicated with the sealed cavity.
3. A cooling system for a construction machine according to claim 2, wherein: the novel oil suction device comprises a traction mechanism, a speed reducing mechanism, an oil suction pump, a radiator, a sealing cavity, an oil return duct and an oil inlet of the traction mechanism, wherein the oil suction pump and the radiator are arranged in the sealing cavity, the outlet of the radiator is connected with the oil inlet of the traction mechanism and the oil inlet of the speed reducing mechanism through pipelines, and the sealing cavity is connected with the inlet of the oil suction pump through the oil return duct.
4. A cooling system for a construction machine according to claim 1, wherein: the end part of the frame is provided with a frame flange, and the frame flange is provided with a third connecting hole arranged on the inner ring and a fourth connecting hole arranged on the outer ring; the end face of the speed reducing mechanism is provided with a second connecting hole, and the end face of the traction mechanism is provided with a first connecting hole; the first connecting hole is matched with the third connecting hole, the traction mechanism is connected with the frame flange through the first connecting hole and the third connecting hole, the second connecting hole is matched with the fourth connecting hole, and the speed reducing mechanism is connected with the frame flange through the second connecting hole and the fourth connecting hole.
5. A cooling system for a construction machine according to claim 3, wherein: the speed reducing mechanism is a speed reducer, and the speed reducer comprises a speed reducer heat dissipation oil inlet, a gear set cooling oil circuit, a spline cooling oil circuit and a speed reducer heat dissipation oil outlet; the speed reducer cooling oil inlet is an oil inlet of the speed reducing mechanism, and the speed reducer cooling oil outlet is an oil outlet of the speed reducing mechanism.
6. A cooling system for a construction machine according to claim 5, wherein: and the speed reducing mechanism is also provided with a cooling oil filling port which is communicated with the gear set cooling oil way.
7. A cooling system for a construction machine according to claim 3, wherein: the traction mechanism comprises a traction mechanism heat-dissipation oil inlet, a traction mechanism heat-dissipation oil outlet and an oil return oil duct, wherein the traction mechanism heat-dissipation oil inlet is an oil inlet of the traction mechanism, and the traction mechanism heat-dissipation oil outlet is an oil outlet of the traction mechanism and is communicated with the sealed cavity; the oil return duct is arranged at the lower part of the traction mechanism; the oil return duct comprises an oil return duct inlet and an oil return duct outlet which are respectively arranged at two ends of the oil return duct; the oil return duct inlet is arranged on the end surface of the traction mechanism and is communicated with the sealed cavity; and the outlet of the oil return passage is connected with an oil suction pump.
8. A cooling system for a construction machine according to claim 1, wherein: the end face of the traction mechanism is provided with a first air vent, the frame flange is provided with a second air vent, the second air vent is a through hole communicated with the first air vent, and the first air vent is arranged at the upper part of the sealed cavity.
9. A cooling system for a construction machine according to claim 8, wherein: the first air holes are inclined through holes which are formed from the end face of the traction mechanism flange to the flange body from bottom to top.
10. A cooling system for a construction machine according to claim 1, wherein: the cooling unit further comprises a temperature sensor, wherein the temperature sensor is arranged at an outlet of the oil return duct and is used for detecting the oil temperature of cooling oil in the sealed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410126650.4A CN117869575A (en) | 2024-01-30 | 2024-01-30 | Engineering machinery cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410126650.4A CN117869575A (en) | 2024-01-30 | 2024-01-30 | Engineering machinery cooling system |
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| CN117869575A true CN117869575A (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410126650.4A Pending CN117869575A (en) | 2024-01-30 | 2024-01-30 | Engineering machinery cooling system |
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2024
- 2024-01-30 CN CN202410126650.4A patent/CN117869575A/en active Pending
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