CN109229080A - A kind of In-wheel motor driving bridge with modified brake assembly - Google Patents
A kind of In-wheel motor driving bridge with modified brake assembly Download PDFInfo
- Publication number
- CN109229080A CN109229080A CN201811234521.8A CN201811234521A CN109229080A CN 109229080 A CN109229080 A CN 109229080A CN 201811234521 A CN201811234521 A CN 201811234521A CN 109229080 A CN109229080 A CN 109229080A
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- Prior art keywords
- brake
- holder
- block
- disc
- pontic
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- 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
- B60T1/065—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 disc
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of In-wheel motor driving bridges with modified brake assembly, including pontic, pontic two sides are provided with hub motor, disc brake mechanism is provided on pontic, disc brake mechanism includes the brake disc being fixedly connected with hub motor output shaft, is respectively arranged with left brake(-holder) block and right brake(-holder) block in brake disc two sides, right brake(-holder) block side is provided with cylinder, a bias piece is connected on the cylinder rod of cylinder, face bias piece is provided with the putter component for pushing right brake(-holder) block；It further include main clamper body, main clamper body is fixed on a bracket, and bracket is fixedly connected with pontic, the cavity for accommodating bias piece and putter component is formed on main clamper body, secondary caliper is arranged in left brake(-holder) block side, and secondary caliper is fixedly connected with left brake(-holder) block, and secondary caliper is fixedly connected with main clamper body.Actuator structure of the present invention is compact, can make vehicle safety, smoothly check.
Description
Technical field
The present invention relates to electric vehicle engineering fields, more specifically, are related to In-wheel motor driving bridge.
Background technique
New-energy automobile has environmental protection, energy-efficient advantage, has adapted to international energy supply shortage and environmentally friendly cry is increasingly high
The overall background to rise becomes the focus of market and social concerns.All kinds of matched components assemblies also have occurred essence and change
Become, some motors are instead of engine and gearbox, and what is had direct is integrated with motor, drive axle, gearbox, transmission shaft etc.
In-wheel motor driving bridge, at this moment the brake of traditional form does not adapt to applying for new-energy automobile.It is well known that automobile
Safety is extremely important, and especially as the braking system of vehicle active safety, reliability is directly related to personnel and property peace
Entirely.The brake disc rotating speed of In-wheel motor driving bridge is high, up to 4500RPM, and the brake disc maximum speed of conventional ADS driving bridge
Ability 600RPM, such as reuse conventional brake will appear brake(-holder) block rapid wear, high temperature cause brake(-holder) block adhesive volatilization braking
The catastrophe failures such as piece fragmentation, brake disc cracking, what these failures were eventually led to is the failure of vehicle main brake, to lose control of one's vehicle.
Summary of the invention
It is of the invention aiming at the shortcomings in the prior art, provide a kind of hub motor with modified brake assembly
Drive axle.
The application is achieved by the following technical solution: a kind of In-wheel motor driving with modified brake assembly
Bridge, including pontic are provided with hub motor in the pontic two sides, disc brake mechanism are provided on the pontic, described
Disc brake mechanism includes the brake disc being fixedly connected with hub motor output shaft, is respectively arranged with a left side in the brake disc two sides
Brake(-holder) block and right brake(-holder) block, the right brake(-holder) block side are provided with cylinder, a bias piece are connected on the cylinder rod of the cylinder,
Bias piece described in face is provided with the putter component for pushing the right brake(-holder) block；It further include main clamper body, the main clamper body is solid
Fixed to be arranged on a bracket, the bracket is fixedly connected with pontic, be formed on the main clamper body accommodate the bias piece and
Secondary caliper is arranged in the cavity of the putter component, the left brake(-holder) block side, and the pair caliper is fixedly connected with left brake(-holder) block, institute
It states secondary caliper to be fixedly connected with the main clamper body, when cylinder pushes bias piece rotation, so that the bias piece is to a lateral deviation
When pressing the putter component, the bias piece is simultaneously to main clamper body described in the bias of the other side.
In above-mentioned technical proposal, the bias piece includes two in the bias terminal of cam face and one and the cylinder
The interconnecting piece of bar connection, the putter component includes push rod and the push plate for being connected to the push rod end.
In above-mentioned technical proposal, sliding pin is provided on the bracket, the pair caliper and the sliding pin are slidably matched.
In above-mentioned technical proposal, the left brake(-holder) block and right brake(-holder) block are powder metallurgy brake(-holder) block.
In above-mentioned technical proposal, the brake disc is steel alloy brake disc.
The invention has the following beneficial effects: actuator structure of the present invention is compact, vehicle safety can be made, smoothly checked,
And the requirement for dynamic balance under the premise of extreme value revolving speed 5000rpm can be met.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention.
Fig. 2 is the structural schematic diagram of hub motor of the present invention.
Fig. 3 is the structural schematic diagram of disc brake mechanism.
Fig. 4 is the schematic perspective view of main clamper body.
Fig. 5 is the cooperation schematic diagram of pontic and hub motor.
Fig. 6 is the schematic perspective view of bias piece.
Fig. 7 is the cooperation schematic diagram of putter component and bias piece.
Fig. 8 is the structural schematic diagram of reducer shell.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing: a kind of referring to Fig. 1 to Fig. 8
In-wheel motor driving bridge with modified brake assembly, including pontic 2 are provided with hub motor in 2 two sides of pontic
1, the hub motor 1 includes motor part 10, the motor part shell with motor part output shaft 100 and formation gabarit
11, it is fixedly installed stator 12 on 11 inner wall of motor part shell, is provided with rotor 13 in the stator 12, described turn
Son 13 is formed a fixed connection by rotor supports part 14 and the motor output shaft 100, for rotary motion to be transferred to institute
State motor output shaft 100.
Intracavitary in the rotor 13 to be provided with planet gear reducing mechanism 3, the planet gear reducing mechanism 3 has motor
The rotation of output shaft 100 is slowed down and the output shaft exported and the reduction part shell 30 for forming gabarit.Wherein the planetary gear slows down
The output shaft and motor output shaft 100 of mechanism share an axis.As a kind of specific example of planet gear reducing mechanism, the application
Planet gear reducing mechanism include the sun gear 31 being arranged in reduction part shell 30 and the centre wheel engaged with the sun gear
32, the output shaft of the planet gear reducing mechanism is arranged on the centre wheel 32.Link on the motor output shaft 100 solid
Surely there is hub for vehicle wheel 4.
In above structure, by the way that planet gear reducing mechanism 3 is integrated to rotor internal cavity, therefore rationally designs and rotor is utilized
Space is reduced entire hub motor in volume.
The water-cooling channel 110 that S-type distribution is offered inside the motor part shell 11, in water-cooling channel 100
Admitting pipe joint (attached drawing is not shown) is arranged in inlet, and in the exit of water-cooling channel, setting titting water outlet is (attached not shown
Out).It is recycled at titting water outlet further along water-cooling channel 110 by the way that cooling water is passed into admitting pipe joint and is exported, it can be with
Effectively cooling stator generates heat, and carries out heat exchange with inner space, reaches heat dissipation effect.Further, described
It is provided with small circular rib (attached drawing is not shown) outside electric machine casing, motor part shell 11 is increased by above-mentioned small circular rib
With extraneous heat exchange area, and then further enhance heat dissipation effect.
The oily channel that cooling oil passes through is formed between the stator 12 and rotor 13, is set on the motor part shell 11
The flowline connection to subsea for being equipped with the inlet connector being connected at the oily feeder connection and being connected at the oily feeder connection, cooling oil
Enter under the effect of external pressure fuel pump from oil inlet, is flowed out through oil passage from oil outlet, it is cooling to turn by above-mentioned cooling oil
The heat that sub- iron core, permanent magnet and bearing operation generate, and heat exchange is carried out with decelerator shell.
In above structure, by water, oil exchange is cooling and surface is from heat radiation cooling system design, this hub motor is specified
Stator winding temperature is about controlled at 100 ° when load, and peak value runs 135 °, and 120 ° of rotor permanent magnet, 70 ° of bearing temperature, operation is warm
It is more reasonable to spend, and extends machine life.Complete machine structure is compacter, and length is shorter, light-weight, than outer rotor list tire hub motor
Light-weight 150KG or so mitigates complete vehicle weight, improves electromagnetism course continuation mileage.
Further preferred, water cavity 30a is formed inside the reduction part shell 30, in 30 end face of reducer shell
On offer the admitting pipe joint (attached drawing is not shown) and titting water outlet (attached drawing is not shown) being connected to the water cavity 30a, lead to
Cross by cooling water be passed into admitting pipe joint further along water cavity 30a be recycled at titting water outlet export, can be effectively reduced and subtract
The heat that fast 30 inside each component of kind of planet gear reducing mechanism of device shell generates when working.For supplying reducing gearbox in the application
The supply unit of 11 cooling water source of body 30 and motor part shell is all made of the supply of the water tank on automobile, in embodiment to above-mentioned knot
Structure will not be repeated here.
Disc brake mechanism 4 is provided on the pontic 2, the disc brake mechanism 4 includes exporting with hub motor
The brake disc 40 that axis 100 is fixedly connected is respectively arranged with left brake(-holder) block 40a and right brake(-holder) block 40b in 40 two sides of brake disc,
The side right brake(-holder) block 40b is provided with cylinder 41, is connected with a bias piece 5 on the cylinder rod of the cylinder 41, described in face
Bias piece 5 is provided with putter component 6, and the putter component 6 is for pushing the right brake(-holder) block 40b；It further include main clamper body 7, institute
It states main clamper body 7 to be fixed on a bracket 200, above-mentioned bracket 200 is fixedly connected with pontic 2, is formed on the main clamper body 7
There is the cavity for accommodating the bias piece 5 and the putter component 6, secondary caliper 8, the pair is arranged in the side left brake(-holder) block 40a
Caliper 8 is fixedly connected with left brake(-holder) block 40a, and the pair caliper 8 is fixedly connected with the main clamper body 7, when cylinder promotion is described partially
Casting die 5 rotates, and when so that the bias piece 5 is to putter component described in the bias of side, the bias piece is simultaneously to other side bias
The main clamper body.Specifically, the bias piece 5 includes two in the bias terminal 50 of cam face and one and the cylinder rod
The interconnecting piece 51 of connection.The putter component 6 includes push rod 60 and the push plate 61 for being connected to the push rod end.
Preferably, the left brake(-holder) block and right brake(-holder) block are powder metallurgy brake(-holder) block, and the brake disc is steel alloy braking
Disk.After left brake(-holder) block, right brake(-holder) block are using above-mentioned material, so that it has the advantage that a, high wearability.Guarantee braking
The service life of piece long enough mileage；B, high heat resistance.Transient heating can be kept to 900 DEG C and for a long time 400 DEG C when, it is mechanical
Performance and mechanical property are basically unchanged；C, high stable friction factor.Automobile is in high temperature, high speed, condition of high voltage braking, system
The coefficient of friction of movable plate can be sufficiently stable；D, high anti-caking.The anti-caking of friction material largely influences friction system
Several stability.The secondary surface of friction should not bond, and otherwise will cause friction material and peel off at work, weld knot, work
When should be steady without friction.When brake disc uses alloy steel, so that it is with physical property resistant to high temperature, at 1000 DEG C
Hot spot and fatigue crack will not be generated, brake force does not fail, and brake disc wear resistance greatly increases.In the bracket
Sliding pin 300 is provided on 200, the pair caliper and the sliding pin 300 are slidably matched.
The principle of the invention is as follows: as cylinder input pressure F1, the cylinder rod of cylinder pushes bias piece rotation, stretches to the left
Out, to eliminate the gap of right brake(-holder) block 40b Yu 40 right side of brake disc, and start output pressure F2 and pass to right brake(-holder) block
40b.At this time, pressure F2 is pressed in the brake disc 40 of rotation by right brake(-holder) block 40b, since the axial movement of brake disc 40 is limited
System, therefore the reaction force of F2 is transferred back to main clamper body 7 by putter component and bias piece by brake disc 40；Meanwhile main clamper body 7 is again
The reaction force of F2 is transmitted to secondary caliper, so that secondary caliper is by a pulling force to the right and starts to float；Due to sliding pin 300
It is fixed on bracket 10, and only play bearing, anti-rotation to main clamper body 7 and secondary caliper 8 and float without limiting left and right；
With the continuous rotation of bias piece, secondary caliper 8 and main clamper body 7 all while to the right float, until left powder metallurgy brake(-holder) block 2 with
Until gap between 40 left side of brake disc is eliminated.At this point, secondary caliper 8 just generates pressure to left powder metallurgy brake(-holder) block 2
F3, powder metallurgy brake(-holder) block 2 left in this way and right brake(-holder) block 40b are pressed in the two sides of brake disc 40 just with the brake force of F2=F3
On, and braking moment T is generated, finally the brake disc of rotation 40 is checked.
Detection its revolving speed n is respectively arranged in the hub motor 1 of 2 two sides of pontic setting1、n2Detection unit, also
Including control unit, the data measured for processing detection unit and according to above-mentioned data control hub motor 1 revolving speed and
Torque.Wherein: the judgement of physical quantity that control unit is measured according to detection unit ought meet simultaneously following three standards then vehicle into
Enter differential mode；Otherwise vehicle is to execute standard torque control model.
Three standards are as follows: standard 1:Wherein K1Constant, namely only both sides can be demarcated by being one
Hub motor rotational speed difference has arrived to a certain degree, just enters differential mode, by demarcating above-mentioned constant K1To determine above-mentioned certain journey
The size of degree；
Standard 2:| Mref|>|M1|, wherein MrefIt is torque mode motor reference torque, by the big small tenon of vehicle throttle signal
It is fixed, M1Constant can be demarcated by being one, by demarcating constant M1To determine that throttle when reaching respective value, just enters differential mode；
Standard 3:| n1|<|nk|, nkVelocity constant can be demarcated by being one, by demarcating constant nkTo determine when speed is greater than
When respective value, differential mode will not be entered；
When control unit, which measures, meets three standards, then differential mode is activated, in this mode in the following manner
To N1、N2Velocity mode reference and M1_ PI (output of 1 controller torque of speed) and M2_ PI (output of 2 controller torque of speed):
Initial current velocity Huo existing speed n is obtained first；N is obtained according to the following formula according to obtained initial current velocity Huo existing speed1、N2Speed
Schema reference:
|N1|=| n | (1-k2)；|N2|=| n | (1+k2),
Wherein K2 is calculated as follows:K in the formula3It is the constant that can be demarcated, nmaxIt is electricity
Machine maximum (top) speed, MmaxIt is motor maximum torque；
Two speed N_1 and N_2 will be acquired and be sent respectively to corresponding hub motor, hub motor executes velocity mode
N1, N2, differential mode execute, and vehicle can be turned with differential, and velocity close-loop control device will be applied, and (velocity close-loop control device uses
One proportion integral control device controls), M_1_PI is one of hub motor velocity close-loop control device torque output, M_
2_PI is another hub motor speed velocity close-loop control device torque output, and torque output will meet following condition:
0<|M1_PI|+|M2_PI|<2·|Mref|、0<|M1_PI|<k3·|Mref|、0<|M2_PI|<k3·|Mref|；
Wherein, when differential mode activation, initial current velocity Huo existing speed n is calculated as follows to obtain:
The average value of K speed before i.e. initial current velocity Huo existing speed samples.
When control unit, which measures, does not meet three standards, then standard torque mode is activated, is controlled when executing standard torque
When mode, two hub motor moment of torsion are same.
Above structure judges to be by judging both sides hub motor rotational speed difference, vehicle throttle signal, velocity magnitude numerical value
It is no to enter differential mode, and the revolving speed of two hub motors and torque are controlled under differential mode, without additional
Aiding sensors, differential pass through software realization, not additional maintenance cost completely；System is safer, stablizes, so that
Hub motor is widely used in new energy and is possibly realized.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments.Described in the above embodiment and specification in the application
It is the principle of the present invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention.On
Changes and improvements are stated to both fall in the range of claimed invention.
Claims (5)
1. a kind of In-wheel motor driving bridge with modified brake assembly, including pontic are provided in the pontic two sides
Hub motor, is provided with disc brake mechanism on the pontic, and the disc brake mechanism includes and hub motor output shaft
The brake disc being fixedly connected is respectively arranged with left brake(-holder) block and right brake(-holder) block in the brake disc two sides, it is characterised in that: described
Right brake(-holder) block side is provided with cylinder, and a bias piece is connected on the cylinder rod of the cylinder, and bias piece described in face is provided with
For pushing the putter component of the right brake(-holder) block；It further include main clamper body, the main clamper body is fixed on a bracket, described
Bracket is fixedly connected with pontic, and the cavity for accommodating the bias piece and the putter component, institute are formed on the main clamper body
It states left brake(-holder) block side and secondary caliper is set, the pair caliper is fixedly connected with left brake(-holder) block, the pair caliper and the main clamper body
It is fixedly connected, it is described when so that the bias piece is to putter component described in the bias of side when cylinder pushes bias piece rotation
Bias piece is simultaneously to main clamper body described in the bias of the other side.
2. a kind of In-wheel motor driving bridge with modified brake assembly as described in claim 1, it is characterised in that: institute
Stating bias piece includes two bias terminals and an interconnecting piece connecting with the cylinder rod in cam face, the push rod portion
Part includes push rod and the push plate for being connected to the push rod end.
3. a kind of In-wheel motor driving bridge with modified brake assembly as described in claim 1, it is characterised in that:
Sliding pin is provided on the bracket, the pair caliper and the sliding pin are slidably matched.
4. a kind of In-wheel motor driving bridge with modified brake assembly as described in claim 1, it is characterised in that: institute
It states left brake(-holder) block and right brake(-holder) block is powder metallurgy brake(-holder) block.
5. a kind of In-wheel motor driving bridge with modified brake assembly as described in any one of claim 1 or 4,
It is characterized by: the brake disc is steel alloy brake disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234521.8A CN109229080A (en) | 2018-10-23 | 2018-10-23 | A kind of In-wheel motor driving bridge with modified brake assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234521.8A CN109229080A (en) | 2018-10-23 | 2018-10-23 | A kind of In-wheel motor driving bridge with modified brake assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109229080A true CN109229080A (en) | 2019-01-18 |
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ID=65081231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811234521.8A Pending CN109229080A (en) | 2018-10-23 | 2018-10-23 | A kind of In-wheel motor driving bridge with modified brake assembly |
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| CN (1) | CN109229080A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU101159B1 (en) * | 2019-03-20 | 2020-09-21 | Alpha Ec Ind 2018 S A R L | Bus with cooled in-wheel electric engines |
-
2018
- 2018-10-23 CN CN201811234521.8A patent/CN109229080A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU101159B1 (en) * | 2019-03-20 | 2020-09-21 | Alpha Ec Ind 2018 S A R L | Bus with cooled in-wheel electric engines |
| EP3711995A1 (en) * | 2019-03-20 | 2020-09-23 | Alpha EC Industries 2018 S.à r.l. | Bus with cooled in-wheel electric engines |
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