CN116464762A - Planetary gear box heat abstractor for hybrid electric vehicle - Google Patents

Planetary gear box heat abstractor for hybrid electric vehicle Download PDF

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Publication number
CN116464762A
CN116464762A CN202310508461.9A CN202310508461A CN116464762A CN 116464762 A CN116464762 A CN 116464762A CN 202310508461 A CN202310508461 A CN 202310508461A CN 116464762 A CN116464762 A CN 116464762A
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CN
China
Prior art keywords
heat dissipation
shell
dissipation mechanism
planetary gear
heat
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Withdrawn
Application number
CN202310508461.9A
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Chinese (zh)
Inventor
陈星�
吴维
卢国成
邓涛
郑讯佳
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Chongqing University of Arts and Sciences
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Chongqing University of Arts and Sciences
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Application filed by Chongqing University of Arts and Sciences filed Critical Chongqing University of Arts and Sciences
Priority to CN202310508461.9A priority Critical patent/CN116464762A/en
Publication of CN116464762A publication Critical patent/CN116464762A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0416—Air cooling or ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention belongs to the technical field of automobile transmission, and particularly relates to a planetary gear box heat abstractor for a hybrid electric vehicle, which comprises a planetary gear structure main body, a first transmission shaft and a second transmission shaft which are in power connection with the planetary gear structure main body, wherein the planetary gear structure main body comprises a shell and a plurality of heat dissipation rings arranged at two ends of the shell; the transmission part and the first heat dissipation mechanism are sleeved on the outer surface of the first transmission shaft; the outer surface of the second transmission shaft is sleeved with the transmission piece and the second heat dissipation mechanism; the first heat dissipation mechanism and the second heat dissipation mechanism at least comprise a plurality of first fan blades which are circumferentially arranged; the shell is provided with a first heat dissipation mechanism and a second heat dissipation mechanism which are connected with each other by power; by adopting the technical scheme of the invention, the problem that the existing planetary gear mechanism is poor in heat dissipation performance after long-time working can be solved.

Description

Planetary gear box heat abstractor for hybrid electric vehicle
Technical Field
The invention belongs to the technical field of automobile transmission, and particularly relates to a planetary gear box heat dissipation device for a hybrid electric vehicle.
Background
The hybrid electric vehicle is characterized in that more than two power sources are arranged on the vehicle, most of the existing hybrid electric vehicles are in hybrid driving modes of an internal combustion engine and a motor, and parts such as the motor, a battery and the like are additionally added in the vehicle; when the automobile accelerates, starts and runs at a low speed, the motor is used as a driving mode, and after the speed is increased, the motor and the motor are matched for driving; therefore, the existing electromechanical hybrid electric vehicle has compact internal space, poor heat dissipation performance and easy influence on certain transmission structures, so that the performance of the vehicle is reduced;
for example, chinese patent publication No. CN212672377U discloses a compact electromechanical hybrid planetary gear structure, a copper plate is disposed on a surface of a housing, a heat dissipation ring is disposed on a surface of the copper plate, and heat generated by the planetary gear structure in the housing is led out of the housing through the heat dissipation ring, so that heat can be dissipated inside the housing, thereby causing a phenomenon of heat accumulation inside the housing; however, in the actual working process, the heat dissipation ring only conducts the heat in the shell out of the shell to conduct passive heat dissipation, the heat dissipation effect is limited, and when the outside air temperature is too high or the planetary gear mechanism works for a long time, the temperature in the shell cannot be effectively controlled, the transmission performance of the planetary gear is affected, and the service life of the planetary gear mechanism is further reduced.
Disclosure of Invention
In view of the above, the invention discloses a planetary gear box heat dissipation device for a hybrid electric vehicle, which aims to solve the problem that the heat dissipation performance of the existing planetary gear mechanism is poor after long-time working.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the planetary gear box heat dissipation device for the hybrid electric vehicle comprises a planetary gear structure main body, a first transmission shaft and a second transmission shaft which are in power connection with the planetary gear structure main body, wherein the planetary gear structure main body comprises a shell and a plurality of heat dissipation rings arranged at two ends of the shell; the transmission part and the first heat dissipation mechanism are sleeved on the outer surface of the first transmission shaft; the transmission piece is in power connection with the first transmission shaft, and the first heat dissipation mechanism is in sliding connection with the first transmission shaft; the outer surface of the second transmission shaft is sleeved with the transmission piece and the second heat dissipation mechanism; the second transmission shaft is in power connection with the corresponding transmission part, and the second heat dissipation mechanism is in sliding connection with the second transmission shaft; the first heat dissipation mechanism and the second heat dissipation mechanism at least comprise a plurality of first fan blades which are circumferentially arranged; the shell is connected with the first heat dissipation mechanism and the second heat dissipation mechanism in a power mode, and when the heat dissipation ring needs to be cooled, the first heat dissipation mechanism and the second heat dissipation mechanism are driven by the executing mechanism to slide towards the shell and are connected with the transmission piece in a power mode, and the first fan blades are driven to rotate to cool the heat dissipation ring.
Further, the second heat dissipation mechanism further comprises a rotating block, a sealing shell and a second protection cover which are sequentially sleeved on the second transmission shaft; the rotating block slides and rotates to be arranged on the surface of the second transmission shaft and is in power connection with the corresponding transmission piece; the first fan blades are circumferentially arranged on the surface of the rotating block; the sealing shell is rotatably arranged on the surface of the rotating block, and a sealing cavity is formed between the inner side of the sealing shell and the surface of the rotating block; a plurality of blades circumferentially fixed on the surface of the rotating block are arranged in the sealing cavity; a heat dissipation pipeline for circulation is communicated between the sealed cavity and the inside of the shell; a plurality of supports are fixedly connected between the second protective cover and the sealing shell; the second protective cover is in power connection with the corresponding actuating mechanism and is driven by the actuating mechanism to slide along the axial direction of the second transmission shaft without relative rotation.
Further, a plurality of second fan blades are circumferentially arranged on the surface of the rotating block, and wind generated by the second fan blades blows to the heat dissipation pipeline; an annular partition plate is arranged between the second protective cover and the rotating block and used for separating the first fan blade from the second fan blade; the inner ring of the partition board is rotationally arranged on the surface of the rotating block, and the outer ring is fixedly connected with the second protective cover; and a plurality of air inlets are formed in the surface of the second protective cover.
Further, annular plates are movably arranged between the adjacent heat dissipation rings, and the adjacent surfaces of the annular plates and the heat dissipation rings are mutually abutted; connecting blocks which are U-shaped are arranged between the adjacent annular plates; the first protective cover and the second protective cover are fixedly connected with the adjacent annular plates and drive the annular plates to slide synchronously.
Further, one side of the annular plate, which is close to the surface of the shell, is provided with a heat conducting pad, and when the first heat dissipation mechanism and the second heat dissipation mechanism are in power connection with the corresponding transmission piece, the heat conducting pad is clung to the surface of the shell.
Further, a plurality of heat dissipation through holes are circumferentially formed in the surfaces of the heat dissipation rings, and the positions of the heat dissipation through holes on the surfaces of the adjacent heat dissipation rings are staggered.
Further, the heat dissipation pipeline is arranged at intervals in a spiral mode around the sealing shell, and the heat dissipation pipeline is in the coverage range of the second fan blade.
The invention has the beneficial effects that:
1. when the internal temperature of the planetary gear structure main body is not high, passive heat dissipation can be performed through the heat dissipation ring; when the planetary gear structure main body works for a long time and the passive heat dissipation of the heat dissipation ring cannot meet the cooling requirement, the executing mechanism on the surface of the shell starts and drives the first heat dissipation mechanism and the second heat dissipation mechanism to move and be in power connection with the transmission piece, at the moment, the first heat dissipation mechanism and the second heat dissipation mechanism start to work under the driving of the transmission piece, the first fan blades rotate and actively dissipate heat of the heat dissipation ring at the same time, so that the heat dissipation efficiency is accelerated, and the temperature of the planetary gear structure main body is reduced;
2. the first heat dissipation mechanism and the second heat dissipation mechanism work, the second heat dissipation mechanism also drives the rotating block to move, the rotating block simultaneously drives the blades and the second blades to rotate, the blades rotate in the sealed shell to drive lubricating oil to circulate between the heat dissipation pipeline and the shell, meanwhile, wind generated by the second blades can take away heat on the surface of the heat dissipation pipeline, so that the temperature of the lubricating oil in the second blades is reduced, more heat in the second blades can be absorbed when the lubricating oil with reduced temperature circulates into the shell, the absorbed heat is taken away by the first blades, and the temperature in the shell can be further reduced by circulating and reciprocating;
3. the annular plate can scrape dust and other impurities attached to the surface of the radiating ring when the first radiating mechanism and the second radiating mechanism move, so that the contact area between the surface of the radiating ring and air is ensured to be large enough, and when the first radiating mechanism and the second radiating mechanism do not work, a cavity with a certain sealing effect can be formed between the annular plate and the radiating ring together, the surface of the radiating ring can be reduced to the greatest extent and is exposed to the air, and dust attached to the surface of the radiating ring is further prevented.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a first exploded view of the structure of the embodiment of the present invention;
FIG. 3 is a second exploded view of the structure of the embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of a second heat dissipation mechanism according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of an outer shell of an embodiment of the present invention.
The figures are marked as follows:
1 shell, 2 heat dissipation ring, 3 driving medium, 4 first transmission shaft, 5 second transmission shaft, 6 first heat dissipation mechanism, 601 sleeve, 602 rotation ring, 603 first protective cover, 7 second heat dissipation mechanism, 701 heat dissipation pipeline, 702 sealed shell, 703 rotation block, 704 blade, 705 baffle, 706 second protective cover, 8 first flabellum, 9 actuating mechanism, 10 annular plate, 11 connecting block, 12 heat dissipation through hole, 13 support, 14 second flabellum, 15 heat conduction pad, 16 air inlets.
Detailed Description
As shown in figures 1 to 5 of the drawings,
the planetary gear box heat dissipating device for the hybrid electric vehicle comprises a planetary gear structure main body, a first transmission shaft 4 and a second transmission shaft 5 which are in power connection with the planetary gear structure main body, wherein the planetary gear structure main body comprises a shell 1 and a plurality of heat dissipating rings 2 arranged at two ends of the shell 1; the transmission part 3 and the first heat dissipation mechanism 6 are sleeved on the outer surface of the first transmission shaft 4; the transmission piece 3 is in power connection with the first transmission shaft 4, and the first heat dissipation mechanism 6 is in sliding connection with the first transmission shaft 4; the outer surface of the second transmission shaft 5 is sleeved with the transmission piece 3 and a second heat dissipation mechanism 7; the second transmission shaft 5 is in power connection with the corresponding transmission piece 3, and the second heat dissipation mechanism 7 is in sliding connection with the second transmission shaft 5; the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 at least comprise a plurality of first fan blades 8 which are circumferentially arranged; the shell 1 is provided with an actuating mechanism 9 in power connection with the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7, and when the heat dissipation ring 2 needs to be cooled, the actuating mechanism 9 drives the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 to slide towards the shell 1 and enable the first heat dissipation mechanism and the second heat dissipation mechanism to be in power connection with the transmission piece 3, and the first fan blades 8 are driven to rotate to cool the heat dissipation ring 2.
In this scheme, the plurality of heat dissipation rings 2 are coaxially arranged at intervals on the surface of the housing 1, and are used for increasing the heat dissipation area of the housing 1 and simultaneously guiding the heat in the housing 1 out of the housing 1 to perform passive heat dissipation (which is described in the comparison document, but is not repeated), and when the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 are not in power connection with the transmission member 3, a gap exists between the first heat dissipation mechanism and the housing 1, so that the heat dissipation rings 2 are beneficial to performing passive heat dissipation; because the passive heat dissipation efficiency of the heat dissipation ring 2 is limited, when the temperature of the planetary gear structure main body exceeds a threshold value after the planetary gear structure main body works for a period of time, the passive heat dissipation of the heat dissipation ring 2 cannot meet the cooling requirement of the planetary gear structure main body, at the moment, the executing mechanism 9 is started, and the executing mechanism 9 drives the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 to move towards the corresponding transmission parts 3 respectively, so that the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 are in power connection with the transmission parts 3; in this scheme, driving medium 3 all adopts the terminal surface fluted disc, and when first cooling body 6 and second cooling body 7 and driving medium 3 power connection, first transmission shaft 4 and second transmission shaft 5 drive corresponding driving medium 3 motion respectively for first flabellum 8 in first cooling body 6 and the second cooling body 7 rotate, dispel the heat to heat ring 2 initiative simultaneously, can take away the heat on heat ring 2 surface fast, and then effectively solve the long-time work of planetary gear structure main part and do not obtain timely radiating problem.
The first heat dissipation mechanism comprises a sleeve 601, a rotating ring 602 and a first protective cover 603, wherein the sleeve 601 is slidably arranged on the surface of the first transmission shaft 4, and one side of the sleeve 601, which is close to the shell 1, is rotationally connected with the rotating ring 602; the first fan blades 8 are circumferentially arranged on the surface of the rotating ring 602; the rotating ring 602 is in power connection with the transmission piece 3 and is driven by the transmission piece 3, one side of the rotating ring 602, which is close to the transmission piece 3, is provided with an end face fluted disc, and the two end face fluted discs are in transmission connection through meshing; the first protective cover 603 and the sleeve 601 are coaxially arranged, and a plurality of circumferentially arranged brackets 13 are fixedly connected with each other; the first protective cover 603 is in power connection with the corresponding actuating mechanism 9, and is driven by the actuating mechanism to slide along the axial direction of the first transmission shaft 4 only without relative rotation.
In this embodiment, the second heat dissipation mechanism 7 further includes a rotating block 703, a sealing housing 702, and a second protection cover 706, which are sequentially sleeved on the second transmission shaft 5; the rotating block 703 is slidably and rotatably arranged on the surface of the second transmission shaft 5 and is in power connection with the corresponding transmission member 3, one side of the rotating block 703, which is close to the corresponding transmission member 3, is provided with an end face fluted disc, and the two end face fluted discs are meshed for transmission connection; the first fan blades 8 are circumferentially arranged on the surface of the rotating block 703; the seal housing 702 is rotatably arranged on the surface of the rotating block 703, and a seal chamber is formed between the inner side of the seal housing 702 and the surface of the rotating block 703; a plurality of blades 704 circumferentially fixed on the surface of the rotating block 703 are arranged in the sealing chamber; a heat dissipation pipeline 701 for circulation is communicated between the sealed cavity and the inside of the shell 1; a plurality of brackets 13 are fixedly connected between the second protection cover 706 and the sealing shell 702; since the second protection cover 706, the bracket 13 and the seal housing 702 are fixedly connected and form a member, the second protection cover 706 is rotatably disposed on the surface of the rotating block 703; the second protection cover 706 is in power connection with the corresponding actuator 9, and is driven by the actuator to slide along the axial direction of the second transmission shaft 5 only without relative rotation.
As shown in the combined drawing, the second protection cover 706 only slides along the axial direction of the second transmission shaft 5 under the driving of the executing mechanism 9, the second protection cover 706 drives the rotating block 703 to slide synchronously through the bracket 13, when the rotating block 703 is in power connection with the corresponding transmission member 3, the rotating block 703 drives the blades 704 to rotate, as the sealing shell 702 is communicated with the inside of the shell 1 through the heat dissipation pipeline 701 to form a loop, lubricating oil (conventional technical means and also described in the comparison document) in the shell 1 can circulate in the heat dissipation pipeline 701 through the rotation of the blades 704, and the rotation of the blades 704 drives the lubricating oil to circulate like a water pump principle; referring to fig. 5, lubricating oil flows into the heat dissipation pipeline 701 from the bottom of the casing 1, is cooled from the outside, and flows into the inside of the casing 1 from the top of the casing 1; the lubricating oil circulated in the heat radiation pipe 701 can exchange heat with air, thereby lowering the temperature of the lubricating oil, so that the temperature inside the casing 1 is lowered.
In this embodiment, the surface of the rotating block 703 is further provided with a plurality of second fan blades 14 circumferentially, and the air generated by the second fan blades 14 blows to the heat dissipation pipeline 701; a partition 705 is disposed between the second protection cover 706 and the rotating block 703, for separating the first fan blade 8 from the second fan blade 14; as described with reference to fig. 4, the partition 705 is annular, and an outer ring of the partition 705 is fixedly connected to the second protection cover 706, and an inner ring is rotatably disposed on the surface of the rotating block 703; the surface of the second protection cover 706 is provided with a plurality of air inlets 16 which are arranged at intervals, so that the first fan blade 8 and the second fan blade 14 can conveniently enter air.
The efficiency of the heat dissipation pipeline 701 through passive heat exchange with the external air is always limited, and the second fan blades 14 circumferentially arranged on the surface of the rotating block 703 can generate wind blowing to the heat dissipation pipeline 701, so that the heat exchange between the heat dissipation pipeline 701 and the air is quickened, the heat dissipation efficiency is improved, and the temperature inside the shell 1 is further reduced; as shown in the combined drawing, the wind directions generated by the first fan blade 8 and the second fan blade 14 are opposite, so that a partition plate 705 needs to be arranged on the second heat dissipation mechanism 7 to separate the first fan blade 8 from the second fan blade 14, so that the first fan blade 8 and the second fan blade 14 are prevented from interfering with each other during operation; the surface of the second protection cover 706 is provided with a plurality of air inlets 16, so that enough wind force can be generated when the first fan blade 8 and the second fan blade 14 rotate.
In this embodiment, the annular plates 10 are movably disposed between the adjacent heat dissipation rings 2, and the annular plates 10 are abutted against the adjacent surfaces of the heat dissipation rings 2; a U-shaped connecting block 11 is arranged between every two adjacent annular plates 10; the first protective cover 603 and the second protective cover 706 are fixedly connected with the adjacent annular plate 10, and drive the annular plate 10 to slide synchronously.
When the first protective cover 603 and the second protective cover 706 drive the annular plate 10 to move, the annular plate 10 can scrape dust or other sundries attached to the surface of the heat dissipation ring 2, so that the contact area between the surface of the heat dissipation ring 2 and air is large enough; as shown in fig. 2 and 3, when the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 are not in power connection with the transmission member 3, the annular plate 10 is positioned outside the heat dissipation ring 2, so that the heat dissipation ring 2 can dissipate heat passively; when the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 are in power connection with the transmission piece 3 under the drive of the executing mechanism 9, the annular plate 10 moves towards the direction of the heat dissipation ring 2 and scrapes impurities attached to the surface of the heat dissipation ring 2 in the moving process; when the planetary gear structure main body does not work, the first protective cover 603 and the second protective cover 706 can be controlled through the actuating mechanism 9, and then the position of the annular plate 10 is indirectly controlled, so that the annular plate 10 just covers a gap between the heat dissipation rings 2 and forms a sealing cavity with the heat dissipation rings 2 to a certain extent, dust adhesion is prevented, the contact area between the surface of the planetary gear structure main body and air is large enough when the heat dissipation rings 2 work next time, and heat dissipation efficiency is guaranteed.
In this embodiment, a heat conducting pad 15 is disposed on a side of the annular plate 10 near the surface of the housing 1, and when the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 are in power connection with the corresponding transmission member 3, the heat conducting pad 15 is closely attached to the surface of the housing 1.
The heat conducting pad 15 can guide the heat on the surface of the shell 1 to the annular plate 10, so that the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 can take away the heat on the surfaces of the shell 1 and the heat dissipation ring 2 at the same time when in operation, and the heat dissipation dead angle is reduced; correspondingly, in order to improve the heat conduction efficiency, the annular plate 10 can be made of copper with higher heat conduction coefficient; the size of the first fan blade 8 is larger than that of the shell 1, and heat on the side surface of the shell 1 can be taken away by wind generated by the first fan blade 8, so that heat dissipation dead angles are further reduced.
In this embodiment, the surfaces of the heat dissipation rings 2 are all circumferentially provided with a plurality of heat dissipation through holes 12, and the positions of the heat dissipation through holes 12 on the surfaces of the adjacent heat dissipation rings 2 are staggered.
As shown in the combined drawing, wind generated by the first fan blade 8 passes through the heat dissipation through hole 12, so that more heat on the surface of the heat dissipation ring 2 is taken away; since the annular plate 10 and the heat dissipation ring 2 form a sealed cavity under certain conditions, the surface of the heat dissipation ring 2 with the largest size is provided with the heat dissipation through holes 12 as few as possible, or a dust screen is arranged at the position of the heat dissipation through holes 12, so that dust is reduced from entering the sealed cavity, and the same is true for the air inlet 16.
In this embodiment, the heat dissipation pipes 701 are disposed at intervals around the sealing housing 702, and the heat dissipation pipes 701 are all within the coverage area of the second fan blade 14.
In combination with the heat dissipation pipelines 701 arranged at intervals in a spiral way, the contact area between the surfaces of the heat dissipation pipelines 701 and the air can be increased as much as possible, and the heat exchange speed between the heat dissipation pipelines 701 and the air is improved; the heat dissipation pipeline 701 can be made of copper tubes, so that heat exchange is facilitated.
In the scheme, the actuating mechanism 9 adopts a bidirectional telescopic rod circumferentially arranged on the surface of the shell 1 (in the prior art, the description is omitted); the working ends of the bidirectional telescopic rod are fixedly connected with the surfaces of the first protective cover 603 and the second protective cover 706 respectively and are used for driving the first protective cover 603 and the second protective cover 706 to slide only along the axial direction of the shell 1 and not rotate; and the surface of the housing 1 is provided with a temperature sensor and a PLC controller (not shown in the figure) for controlling the bi-directional telescopic rod.
The working principle of the invention is as follows:
when the temperature in the planetary gear structure main body is lower than the limit value set by the temperature driver, the planetary gear structure main body only passively dissipates heat through the heat dissipation ring 2, and the heat dissipation ring 2 conducts heat in the planetary gear structure main body and exchanges heat with air;
when the planetary gear structure main body works for a long time, the temperature inside the planetary gear structure main body exceeds the limit value set by the temperature sensor; or the temperature in the planetary gear structure continuously rises, namely after the temperature reaches the limit value set by the temperature sensor, an executing mechanism 9 positioned on the outer surface of the planetary gear structure main body is started to drive a first radiating mechanism 6 and a second radiating mechanism 7 to slide towards the shell 1, so that the first radiating mechanism 6 and the second radiating mechanism 7 are respectively in power connection with a corresponding transmission piece 3, the first fan blades 8 start to rotate, and actively cool the radiating ring 2, thereby improving the radiating effect; the rotating block 703 drives the blade 704 and the second blade 14 to rotate at the same time, so that the lubricating oil in the shell 1 circulates in the heat dissipation pipeline 701, the temperature of the lubricating oil in the heat dissipation pipeline 701 is reduced by the second blade 14, and then the lubricating oil with reduced temperature flows into the shell 1 again, so that the temperature in the shell 1 is reduced;
when the first fan blades 8 cool the heat dissipation ring 2, impurities such as dust are blown to the heat dissipation ring 2 at the same time, and after long-term work, the impurities such as dust are attached to the surface of the heat dissipation ring 2, so that the heat exchange efficiency is affected; therefore, when the executing mechanism 9 drives the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 to slide towards the shell 1, the annular plate 10 is driven to move at the same time, and the movement of the annular plate 10 scrapes off impurities such as dust attached to the surface of the heat dissipation ring 2, so that the contact area of the heat dissipation ring 2 and air is ensured as much as possible; when the first heat dissipation mechanism 6 and the second heat dissipation mechanism 7 work, heat on the surface of the shell 1 is transferred to the annular plate 10 through the heat conduction pad 15, and then the heat on the surface of the annular plate is taken away by the first fan blade 8; when the planetary gear structure main body does not work, the actuating mechanism 9 drives the annular plate 10 to move to the upper side of the heat dissipation ring 2, so that a certain degree of sealing space is formed between the annular plate 10 and the heat dissipation ring 2, and foreign matters such as external dust can be prevented from being attached to the surface of the heat dissipation ring 2.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (7)

1. A planetary gear box heat dissipating double-fuselage for hybrid electric vehicle, including the structural body of the planetary gear, first drive shaft (4) and second drive shaft (5) that connect with its power; the method is characterized in that: the planetary gear structure main body comprises a shell (1) and a plurality of heat dissipation rings (2) arranged at two ends of the shell (1); the outer surface of the first transmission shaft (4) is sleeved with a transmission part (3) and a first heat dissipation mechanism (6); the transmission piece (3) is in power connection with the first transmission shaft (4), and the first heat dissipation mechanism (6) is in sliding connection with the first transmission shaft (4); the outer surface of the second transmission shaft (5) is sleeved with the transmission piece (3) and the second heat dissipation mechanism (7); the second transmission shaft (5) is in power connection with the corresponding transmission piece (3), and the second heat dissipation mechanism (7) is in sliding connection with the second transmission shaft (5); the first heat dissipation mechanism (6) and the second heat dissipation mechanism (7) at least comprise a plurality of first fan blades (8) which are circumferentially arranged; the shell (1) is provided with actuating mechanisms (9) which are in power connection with the first heat dissipation mechanism (6) and the second heat dissipation mechanism (7), and when the heat dissipation ring (2) needs to be cooled, the actuating mechanisms (9) drive the first heat dissipation mechanism (6) and the second heat dissipation mechanism (7) to slide towards the shell (1) and enable the first heat dissipation mechanism and the second heat dissipation mechanism to be in power connection with the transmission piece (3), and the first fan blades (8) are driven to rotate to cool the heat dissipation ring (2).
2. The planetary gearbox heat sink for a hybrid electric vehicle according to claim 1, wherein: the second heat dissipation mechanism (7) further comprises a rotating block (703), a sealing shell (702) and a second protection cover (706) which are sequentially sleeved on the second transmission shaft (5); the rotating block (703) slides and rotates to be arranged on the surface of the second transmission shaft (5) and is in power connection with the corresponding transmission piece (3); the first fan blades (8) are circumferentially arranged on the surface of the rotating block (703); the sealing shell (702) is rotatably arranged on the surface of the rotating block (703), and a sealing cavity is formed between the inner side of the sealing shell (702) and the surface of the rotating block (703); a plurality of blades (704) circumferentially fixed on the surface of the rotating block (703) are arranged in the sealing cavity; a heat dissipation pipeline (701) for circulation is communicated between the sealed cavity and the inside of the shell (1); a plurality of brackets (13) are fixedly connected between the second protective cover (706) and the sealing shell (702); the second protection cover (706) is in power connection with the corresponding actuating mechanism (9) and is driven by the actuating mechanism to slide along the axial direction of the second transmission shaft (5) without relative rotation.
3. The planetary gearbox heat sink for a hybrid electric vehicle according to claim 2, wherein: the surface of the rotating block (703) is also circumferentially provided with a plurality of second fan blades (14), and the air generated by the second fan blades (14) is blown to the heat dissipation pipeline (701); a ring-shaped partition plate (705) is arranged between the second protective cover (706) and the rotating block (703) and is used for separating the first fan blade (8) from the second fan blade (14); the inner ring of the partition plate (705) is rotationally arranged on the surface of the rotating block (703), and the outer ring is fixedly connected with the second protective cover (706); the surface of the second protective cover (706) is provided with a plurality of air inlets (16).
4. A planetary gear box heat sink for a hybrid electric vehicle according to claim 3, wherein: an annular plate (10) is movably arranged between every two adjacent heat dissipation rings (2), and the surfaces of the annular plates (10) and the adjacent heat dissipation rings (2) are mutually abutted; connecting blocks (11) which are U-shaped are arranged between the adjacent annular plates (10); the first protective cover (603) and the second protective cover (706) are fixedly connected with the adjacent annular plates (10) and drive the annular plates (10) to synchronously slide.
5. The planetary gear box heat dissipating device for a hybrid vehicle of claim 4, wherein: and a heat conduction pad (15) is arranged on one side of the annular plate (10) close to the surface of the shell (1), and when the first heat dissipation mechanism (6) and the second heat dissipation mechanism (7) are in power connection with the corresponding transmission piece (3), the heat conduction pad (15) is tightly attached to the surface of the shell (1).
6. The planetary gear box heat dissipating device for a hybrid vehicle according to claim 5, wherein: the surfaces of the heat dissipation rings (2) are all circumferentially provided with a plurality of heat dissipation through holes (12), and the positions of the heat dissipation through holes (12) on the surfaces of the adjacent heat dissipation rings (2) are staggered.
7. The planetary gear box heat dissipating device for a hybrid vehicle of claim 6, wherein: the heat dissipation pipelines (701) are arranged at intervals in a spiral mode around the sealing shell (702), and the heat dissipation pipelines (701) are all in the coverage range of the second fan blades (14).
CN202310508461.9A 2023-05-08 2023-05-08 Planetary gear box heat abstractor for hybrid electric vehicle Withdrawn CN116464762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310508461.9A CN116464762A (en) 2023-05-08 2023-05-08 Planetary gear box heat abstractor for hybrid electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310508461.9A CN116464762A (en) 2023-05-08 2023-05-08 Planetary gear box heat abstractor for hybrid electric vehicle

Publications (1)

Publication Number Publication Date
CN116464762A true CN116464762A (en) 2023-07-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310508461.9A Withdrawn CN116464762A (en) 2023-05-08 2023-05-08 Planetary gear box heat abstractor for hybrid electric vehicle

Country Status (1)

Country Link
CN (1) CN116464762A (en)

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Application publication date: 20230721