CN110614923A - Trailer axle with central liquid cooling eddy current retarder - Google Patents
Trailer axle with central liquid cooling eddy current retarder Download PDFInfo
- Publication number
- CN110614923A CN110614923A CN201911026288.9A CN201911026288A CN110614923A CN 110614923 A CN110614923 A CN 110614923A CN 201911026288 A CN201911026288 A CN 201911026288A CN 110614923 A CN110614923 A CN 110614923A
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- China
- Prior art keywords
- eddy current
- hub
- assembly
- retarder
- current retarder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims description 25
- 239000007788 liquid Substances 0.000 title claims description 22
- 230000009467 reduction Effects 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 239000013585 weight reducing agent Substances 0.000 claims description 8
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 230000000979 retarding effect Effects 0.000 abstract description 6
- 238000013021 overheating Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 1
- 230000005284 excitation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000034158 bleeding Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/28—Eddy-current braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/067—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T5/00—Vehicle modifications to facilitate cooling of brakes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention discloses a trailer axle with a central liquid-cooled eddy current retarder, which comprises the central liquid-cooled eddy current retarder, a half-bridge shell assembly, a hub assembly, a brake assembly and a hub reduction gear, wherein the hub assembly is fixedly connected with the hub reduction gear; the retarder solves the problem of overheating of the retarder, is integrated in the center of a trailer axle and realizes retarding of wheels; a large-speed-ratio hub reduction gear is developed to carry out secondary torque increase on the retarder, so that the whole bridge large braking torque is realized, and the stator quality of the retarder is reduced; the brake device can realize continuous slow braking when needed, further drag the semitrailer, realize the braking of the automobile train, improve the braking capability, reduce the braking strength of the wheel brake, cancel the brake drum water spray device, prolong the service life of the brake friction plate, and is suitable for heavy-load long downhill vehicle types.
Description
Technical Field
The invention relates to the technical field of automobile auxiliary braking, in particular to a trailer axle with a central liquid cooling eddy current retarder.
Background
For semi-trailer trains, the brakes are basically realized by friction between a friction plate and a brake drum. Because the carrying weight of the transport vehicle is large, when the transport vehicle is continuously braked for a long time on a long downhill or in a mountain area, the friction plate is overheated, the braking efficiency is reduced, and even the tragedies that the vehicle brake fails and the vehicle is destroyed and casualties occur.
At present, most semi-trailer trains still adopt a method of cooling the brake by water sprayed from a water tank, although the braking efficiency is temporarily improved, the service life of the brake is shortened, a brake drum is easy to burst, particularly, the road surface is frozen in winter, the road surface adhesion coefficient is reduced, and the safety of the following vehicles is seriously influenced.
The retarder belongs to the field of auxiliary braking, and the commercial retarders comprise eddy current retarders and hydraulic retarders; the retarber mainly installs in gearbox or transaxle differential package front end, has increased gearbox or axle cantilever, and the structure is complicated, and it is big to arrange the influence to the whole car.
And if the retarder is arranged on the tractor to realize the braking of the tractor, the trailer with huge mass does not brake at the moment, and still advances according to the original speed, so that mutual force of the ejection effect is generated at the towing connection, and dangers such as tail flicking, side turning and the like are easy to occur.
The eddy current retarder has the characteristics of obvious low-speed braking effect and quick response time, is suitable for working conditions of long downhill and mountainous areas, but the torque generated by eddy current has a direct relation with the stator volume of the eddy current retarder, so that the retarder stator meeting the downhill requirement of a large-scale heavy-duty vehicle is very heavy, the traditional air-cooled eddy current retarder has serious heat fading, the braking torque is reduced by 50 percent within 2 minutes, and the downhill requirement of the large-scale heavy-duty vehicle cannot be met.
The notice number is: CN 107516985A discloses an electromagnetism liquid cooling retarber of bridge type, stator inner water course is the cavity that rotor support and stator formed, and is not integrative structure yet, has the risk of revealing, and the oil pocket that stator and left and right flange axle constitute only has an oil inlet, and the oil drain is inconvenient, and the cavity is in the stator, and the stator generates heat and arouses that the pressure is too high in the oil pocket, has oil leak, the risk of bleeding.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a trailer axle with a central liquid-cooled eddy current retarder, which solves the problem of overheating of the retarder, is integrated in the center of the trailer axle, develops a high-speed-ratio hub reduction gear to carry out secondary speed-increasing and retarding braking on the retarder, further pulls a semitrailer, realizes braking of an automobile train, can continuously reduce the braking strength of the hub brake when needed, cancels a brake drum water spraying device, prolongs the service life of a brake friction plate, and is suitable for heavy-load long downhill vehicle models.
In order to achieve the purpose, the invention provides the following technical scheme: a trailer axle with a central liquid-cooled eddy current retarder comprises the central liquid-cooled eddy current retarder, a half-bridge shell assembly, a hub assembly, a brake assembly and a hub reduction gear, wherein the hub assembly is fixedly connected with the hub reduction gear;
the central liquid cooling eddy current retarder comprises a stator, a coil and a rotor which are positioned inside the stator and an integrally formed double water channel structure, wherein petal weight reduction grooves are formed in flange surfaces at two ends of the stator.
Further, half-bridge shell assembly includes half-bridge shell body, leaf spring backing plate, leaf spring clamp plate, stopper flange, retarber flange and wheel hub central siphon, half-bridge shell body, leaf spring backing plate, leaf spring clamp plate, stopper flange, retarber flange and wheel hub central siphon integrated into one piece, half axle housing assembly passes through the wheel hub central siphon and links with wheel hub assembly bearing, half axle housing assembly passes through stopper flange and stopper assembly fixed connection.
Furthermore, be provided with tank filler sleeve and oil drain hole on the half-axle housing body, the breather plug passes through the screw-thread fastening at the tank filler sleeve, and the magnetism plug screw passes through the screw-thread fastening at the oil drain hole.
Further, the horn mouth of half axle housing body is provided with the motor, the motor passes through bolt fixed connection with the rotor.
Furthermore, petal subtracts heavy groove all is provided with to stopper flange and retarber flange's connection face.
Further, the hub reduction gear comprises a hub reduction gear shell, a planet gear shaft and a sun gear, wherein the hub reduction gear shell is fixedly connected with a brake drum of the hub assembly; the hub reduction gear shell fixes the planet gear in the hub reduction gear shell planet carrier through the planet gear shaft, and the planet gear is matched with the sun gear.
Further, the rotation speed ratio of the hub reduction gear is 3.947 ~ 6.5.5.
The utility model provides a control system of trailer axletree of formula liquid cooling eddy current retarder in area, control system includes action bars, control box and temperature sensor, and when the car braking, action bars work and pass through the control box with signal transfer for formula liquid cooling eddy current retarder in the middle of, realize whole car braking.
The water cooling system comprises a stator with a double-water-channel structure, a water pump, a heat dissipation water tank and an expansion water tank; when the central liquid cooling eddy current retarder works, the stator containing the double-water-channel structure generates a large amount of heat, the temperature sensor transmits signals to the control box, the control water pump circulates cooling liquid of the expansion water tank to the heat dissipation water tank, and the heat dissipation water tank discharges the heat through air cooling.
The invention has the following beneficial effects:
1. the double-water-channel structure integrally formed in the stator does not need welding, simplifies the process, ensures the tightness of the water channel, and realizes weight reduction by arranging the petal weight reduction grooves on the flange surfaces at the two ends of the stator.
2. The speed ratio of the wheel-side speed reducer is designed to be 3.947-6.5, secondary speed increasing is realized on the rotor through the wheel-side speed reducer, and the higher the rotating speed of the eddy current retarder is, the larger the braking torque is.
3. The half-bridge shell is integrally cast and formed, the structural strength is high, the half-bridge shell is provided with the oil filling hole, the oil drain hole and the upper oil passage and the lower oil passage, the maintenance is convenient, and the ventilation plug is arranged at the oil filling hole, so that the influence of temperature on the internal pressure of the axle shell is avoided.
4. The invention designs a permanent magnet brushless motor, converts the kinetic energy of an axle into electric energy, and supplies power to the excitation coil of the axle retarder and a main vehicle, thereby achieving the purpose of saving energy. The invention has the functions of bearing, braking, retarding and energy recovery, is arranged at the first shaft position of the semitrailer, can realize continuous retarding braking when needed, further pulls the semitrailer and realizes braking of an automobile train, and compared with a retarder scheme arranged on a tractor, the scheme has relatively low cost and high safety.
Drawings
FIG. 1 is an overall system diagram of the present invention;
FIG. 2 is an overall profile view of the present invention;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a schematic view of the stator of the present invention being sliced;
FIG. 5 is a schematic cut-away view of the half-bridge shell assembly of the present invention;
in the figure: 1-hub reduction gear, 1-2-hub assembly, 1-3-half-bridge shell assembly, 1-4-middle-positioned liquid cooling eddy current retarder and 1-5-brake assembly; 2-1-trailer axle, 2-temperature sensor, 2-3-radiating water tank, 2-4-expansion water tank, 2-5-control box, 2-6-water pump, 2-7-operating lever; 3-1-stator, 3-2-coil, 3-rotor, 3-4-motor, 3-5-half-bridge shell body, 3-6-breather plug, 3-7-half shaft, 3-8-magnetic screw plug, 3-9-bearing, 3-11-brake drum, 3-13-hub reducer shell, 3-14-planet wheel, 3-15-needle bearing, 3-16-planet wheel shaft and 3-17-sun wheel; 4-1-petal weight reduction groove, 4-2-outer water channel, 4-3-inner water channel; 5-1-retarder connecting flange, 5-2-plate spring backing plate, 5-3-hub axle tube, 5-4-brake connecting flange and 5-plate spring pressing plate.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application.
The first embodiment is as follows:
as shown in fig. 1-5, a trailer axle with a central liquid-cooled eddy current retarder comprises a central liquid-cooled eddy current retarder 1-4, a half-bridge shell assembly 1-3, a hub assembly 1-2, a brake assembly 1-5 and a hub reduction gear 1-1, wherein the hub assembly 1-2 is fixedly connected with the hub reduction gear 1-1, the half-bridge shell assembly 1-3 is in bearing connection with the hub assembly 1-2, the hub reduction gear 1-1 is connected with the central liquid-cooled eddy current retarder 1-4 in series through the half-bridge shell assembly 1-3, the half-bridge shell assembly 1-3 is fixedly connected with the brake assembly 1-5, and the brake assembly 1-5 is braked through air; the central liquid cooling eddy current retarder 1-4 comprises a stator 3-1, a coil 3-2 and a rotor 3-3 which are positioned in the stator 3-1, and an integrally formed double-water-channel structure, wherein the double-water-channel structure is provided with an inner water channel 4-3 and an outer water channel 4-2, welding is not needed, the process is simplified, the tightness of the water channels is ensured, and petal weight reduction grooves 4-1 are formed in flange surfaces at two ends of the stator 3-1, so that weight reduction is realized. The coil 3-2 is an excitation coil, a magnetic field is generated by electrifying the excitation coil on the stator 3-1, the rotor 3-3 rotates in the magnetic field to form an eddy current, and the eddy current generates a braking torque on the rotor 3-3, wherein the magnitude of the braking torque is related to the magnitude of the excitation current and the rotating speed of the rotor 3-3. The rotor support is provided with blades, and the blades are arranged at two ends of the half-bridge shell body to form circulating air flow, so that generated heat is discharged through the half-bridge shell exhaust holes, and the influence of high temperature on the coil 3-2 and the rotor 3-3 is reduced.
The half axle housing assembly 1-3 comprises a half axle housing body 3-5, a plate spring base plate 5-2, a plate spring pressing plate 5-5, a brake connecting flange 5-4, a retarder connecting flange 5-1 and a hub axle tube 5-3, wherein the half axle housing body 3-5, the plate spring base plate 5-2, the plate spring pressing plate 5-5, the brake connecting flange 5-4, the retarder connecting flange 5-1 and the hub axle tube 5-3 are integrally formed, the process is reduced, the half axle housing assembly 1-3 is in bearing connection with the hub assembly axle tube 1-2 through the hub axle tube 5-3, the half axle housing assembly 1-3 is fixedly connected with the brake assembly 1-5 through the brake connecting flange 5-4, and the connecting surface of the retarder connecting flange 5-1 is provided with a petal-reducing groove, carrying out lowering and resetting design on the half axle housing; and the high-strength ductile iron material QT700-5 is adopted, the tensile strength is not lower than 700MPa, the yield strength is not lower than 420MPa, the elongation is not lower than 5, the deformation of the cast axle housing is small, the bearing capacity is high, and the market demand can be better met. The half axle housing body 3-5 is provided with an oil filling hole and an oil drain hole, the ventilation plug 3-6 is fastened at the oil filling hole through threads to avoid overhigh internal pressure, and the magnetic screw plug 3-8 is fastened at the oil drain hole through threads to facilitate oil change. The horn mouth of half axle housing body 3-5 is provided with motor 3-4, motor 3-4 is permanent magnetism brushless motor, motor 3-4 and 3-3 rotor pass through bolt fixed connection, and when the vehicle slows down the braking, the electric power that the synchronous generator on both sides produced superposes together after full wave rectification, and the power supply is given retarber excitation coil through IGBT (insulated gate bipolar transistor) control with PWM (pulse width modulation) mode to the axle excitation coil, and built-in generator turns into the axle kinetic energy electric energy, and the remaining electric power of generator can be sent to the storage battery and store, recycles when necessary, reaches energy saving purpose.
The hub reduction gear 1-1 comprises a hub reduction gear shell 3-13, planet wheels 3-14, a planet wheel shaft 3-16 and sun wheels 3-17, the hub reduction gear shell 3-13 is fixedly connected with a brake drum 3-11 of a hub assembly, the hub reduction gear shell fixes the planet wheels 3-14 in a planet carrier of the hub reduction gear shell 3-13 through the planet wheel shaft 3-16, a thrust needle bearing 3-15 serves as a gasket, the planet wheels are matched with the sun wheels 3-17 in a gear matching mode, a half shaft 3-7 is further installed inside the half bridge shell assembly 1-3 through the bearing 3-9, the bearing 3-9 for fixing the half shaft 3-7 is lubricated in the half bridge shell and is provided with a single oil cavity and an oil duct, an upper port is filled with oil, a lower port is filled with oil, the wheel reduction gear 1-1 and the rotor 3-3 assembly of the retarder are connected in series through the half shaft 3-7, when the vehicle needs auxiliary braking, the wheel drives the hub reduction gear 1-1 and drags the rotor 3-2 of the rotor of the retarder to rotate reversely, the hub reduction gear 1-1 has a wheel edge ratio of 356.5, and the speed ratio of the rotor is preferably 25.5, and the speed of the hub reduction gear is increased by the eddy current speed reduction gear.
The invention also designs a control system of the trailer axle with the central liquid cooling eddy current retarder, wherein the control system comprises an operating rod 2-7, a control box 2-5, a temperature sensor 2-2 and a liquid cooling circulating system, and the liquid cooling circulating system consists of a stator with a double water channel structure, a water pump 2-6, a heat radiation water tank 2-3 and an expansion water tank 2-4; the cooling liquid is filled in the heat dissipation system through the expansion water tank 2-4 in advance, when auxiliary braking is needed, the operating rod 2-7 works and transmits signals to the central liquid cooling eddy current retarder 1-4 through the control box 2-5 to generate reverse torque, the axle 2-1 of the trailer is slowed down, continuous braking of the semitrailer is achieved, the tractor is further dragged, braking of the whole trailer is achieved, and even the brake assembly 1-5 is not needed to intervene for working; when the central liquid cooling eddy current retarder 1-4 works, a stator with a double-water-channel structure generates a large amount of heat, the temperature sensor 2-2 transmits signals to the control box 2-5, the water pump 2-6 is controlled to circulate cooling liquid of the expansion water tank 2-4 to the heat dissipation water tank 2-3, the heat in the stator 3-1 is brought into the heat dissipation water tank 2-3 through the cooling liquid, and the heat is discharged from the heat dissipation water tank 2-3 through air cooling, so that the temperature is reduced.
The invention improves the performance of the eddy current retarder to a new height, and greatly meets the requirement of heavy-duty automobiles on the cost performance of the retarder (see table 1).
TABLE 1 retarder combination Performance comparison
| Parameter(s) | Traditional electric eddy speed damper (wind cooling) | Hydraulic retarder | Novel electric eddy current retarder (liquid cooling) |
| Braking performance | Is low in | Height of | Is higher than |
| Quality of | Heavy load | Light and lightweight | Heavy weight |
| Market proportion | 80% | 10% | 0 |
| Manufacturability of | Easy to use | Difficulty in | Easy to use |
| Low speed braking capability | Good taste | Difference (D) | Good taste |
| Reaction rate | Fast-acting toy | Slow | Fast-acting toy |
| Brake torque fade | Big (a) | Small | Small |
| Selling price (Wanyuan) | 0.6-1.5 | 2-4 | 0.6-1.5 |
The invention is designed integrally, develops a hub reduction gear and a rotor permanent magnet brushless motor, has the functions of bearing, braking, retarding and energy recovery, is arranged at the position of a first shaft of a semitrailer, can realize continuous retarding braking when needed, and further pulls the semitrailer to realize the braking of an automobile train. The scheme has relatively low cost and high safety.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A trailer axle with a central liquid-cooled eddy current retarder comprises the central liquid-cooled eddy current retarder, a half-bridge shell assembly, a hub assembly, a brake assembly and a hub reduction gear, and is characterized in that the hub assembly is fixedly connected with the hub reduction gear, the half-bridge shell assembly is in bearing connection with the hub assembly, the hub reduction gear is connected with the central liquid-cooled eddy current retarder in series through the half-bridge shell assembly, the half-bridge shell assembly is fixedly connected with the brake assembly, and the brake assembly is braked through air;
the central liquid cooling eddy current retarder comprises a stator, a coil and a rotor which are positioned inside the stator and an integrally formed double water channel structure, wherein petal weight reduction grooves are formed in flange surfaces at two ends of the stator.
2. The trailer axle with the central liquid cooling eddy current retarder according to claim 1, wherein the half axle housing assembly comprises a half axle housing body, a plate spring base plate, a plate spring pressing plate, a brake connecting flange, a retarder connecting flange and a hub axle tube, the half axle housing body, the plate spring base plate, the plate spring pressing plate, the brake connecting flange, the retarder connecting flange and the hub axle tube are integrally formed, the half axle housing assembly is connected with a bearing of the hub assembly through the hub axle tube, and the half axle housing assembly is fixedly connected with the brake assembly through the brake connecting flange.
3. The trailer axle with a centrally mounted liquid-cooled eddy current retarder as claimed in claim 2, wherein the axle housing body is provided with an oil filling hole and an oil drain hole, the breather plug is fastened to the oil filling hole through threads, and the magnetic plug screw is fastened to the oil drain hole through threads.
4. A trailer axle with a centrally mounted liquid cooled eddy current retarder as claimed in claim 3, wherein the bell mouth of the axle housing body is provided with an electric motor, and the electric motor is fixedly connected with the rotor through bolts.
5. The trailer axle with a centrally mounted liquid cooled eddy current retarder as claimed in claim 3, wherein the connecting surfaces of the brake connecting flange and the retarder connecting flange are provided with petal weight reduction grooves.
6. The trailer axle with the centrally-mounted liquid-cooled eddy current retarder according to claim 1, wherein the hub reduction gear comprises a hub reduction gear shell, a planet gear shaft and a sun gear, and the hub reduction gear shell is fixedly connected with a brake drum of the hub assembly; the hub reduction gear shell fixes the planet gear in the hub reduction gear shell planet carrier through the planet gear shaft, and the planet gear is matched with the sun gear.
7. The trailer axle with a centrally mounted liquid cooled eddy current retarder of claim 6, wherein the rotational speed ratio of the wheel hub reduction gear is 3.947 ~ 6.5.5.
8. The control system of the trailer axle with the central liquid-cooled eddy current retarder according to any one of claims 1 to 7, wherein the control system comprises an operating rod, a control box and a temperature sensor, and when the trailer is braked, the operating rod works to transmit signals to the central liquid-cooled eddy current retarder through the control box so as to realize the braking of the whole trailer.
9. The control system of the trailer axle with the central-positioned liquid-cooled eddy current retarder according to claim 8, further comprising a liquid-cooled circulating system, wherein the liquid-cooled circulating system is composed of a stator with a double-water-channel structure, a water pump, a heat dissipation water tank and an expansion water tank; when the central liquid cooling eddy current retarder works, the stator containing the double-water-channel structure generates a large amount of heat, the temperature sensor transmits signals to the control box, the control water pump circulates cooling liquid of the expansion water tank to the heat dissipation water tank, and the heat dissipation water tank discharges the heat through air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026288.9A CN110614923A (en) | 2019-10-25 | 2019-10-25 | Trailer axle with central liquid cooling eddy current retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026288.9A CN110614923A (en) | 2019-10-25 | 2019-10-25 | Trailer axle with central liquid cooling eddy current retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110614923A true CN110614923A (en) | 2019-12-27 |
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ID=68926652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911026288.9A Pending CN110614923A (en) | 2019-10-25 | 2019-10-25 | Trailer axle with central liquid cooling eddy current retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110614923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212394A (en) * | 2021-03-28 | 2021-08-06 | 杭州顿硕信息科技有限公司 | Brake system based on artificial intelligence |
| CN113250763A (en) * | 2021-05-26 | 2021-08-13 | 中国科学院合肥物质科学研究院 | Eddy current braking turbo expander |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005043726A1 (en) * | 2003-10-31 | 2005-05-12 | Telma | Water-cooled electromagnetic retarder |
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| CN113250763A (en) * | 2021-05-26 | 2021-08-13 | 中国科学院合肥物质科学研究院 | Eddy current braking turbo expander |
| CN113250763B (en) * | 2021-05-26 | 2024-03-22 | 中国科学院合肥物质科学研究院 | Eddy current braking turbine expander |
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