CN208125391U - A kind of drum-type Retarder - Google Patents
A kind of drum-type Retarder Download PDFInfo
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- CN208125391U CN208125391U CN201820523893.1U CN201820523893U CN208125391U CN 208125391 U CN208125391 U CN 208125391U CN 201820523893 U CN201820523893 U CN 201820523893U CN 208125391 U CN208125391 U CN 208125391U
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Abstract
The utility model relates to a kind of drum-type Retarders.Including drum-type rotor, stator, line shaft.Drum-type rotor includes barrel and the impeller that is fixedly connected with line shaft, and impeller and barrel end are interference fitted.Stator include with the stator frame of line shaft rotatable engagement, several iron cores being fixed on stator frame, it is equal with iron core quantity and be placed on iron core field coil assembly, magnetic yoke equal with iron core quantity and being fixed on iron core end face.It is respectively and fixedly provided with bearing and dustproof cover from inside to outside in the groove of axial sides on stator frame, the side far from impeller is fixed with several exterior part fixed blocks.The stator and power between centers for being fixed with bearing and dustproof cover are rotatable engagement, and are constrained in drum-type rotor by being set to the locking nut on line shaft far from impeller side.Retarder system inertia in this programme is big, system power dissipation is small, is very suitable to chassis dynamometer requirement；And structure is simple, heat resistanceheat resistant damping capacity is strong, is suitable for using for a long time.
Description
Technical field
The utility model relates to automotive inspection equipment fields, and in particular to a kind of drum-type Retarder.
Background technique
Currently, the important equipment chassis dynamometer of vehicle detection plays more and more important angle in automobile detection field
Color.The detection of this importance not monomer present power of vehicle and discharge, while being also embodied in and road is carried out by chassis dynamometer
Face mould intends the detection to assist automotive comprehensive performance.Therefore, the performance of chassis dynamometer determines the accurate fixed of test data, into
And determine the Feasible degree of automotive check result, the exploitation of automobile, use, in terms of play an important role.With regard to this,
National quality supervising and quarantining general bureau has issued the specifications such as JJF 1221-2009 or standard to ensure each of automobile chassis dynamometer
Item performance.
In general, automobile chassis dynamometer includes rack, the test being arranged in rack roller and with test roller
Connected device for power absorption.As the core functional components of chassis dynamometer, the performance of device for power absorption is directly determined
The performance of dynamometer machine.According to the difference for inhaling function principle, common device for power absorption can be divided mainly into three categories：Waterpower measurement of power
Machine, uses water as braking medium, and precision is lower；Electric dynamometer, also known as balance motor can both load, can also
To do power output, high-precision measurement and detection may be implemented by electronic control, but its manufacturing cost is high, is only applicable to section
Grind unit；Electric eddy current dynamometer completes detection function with eddy current effect, and precision has compared to hydraulic dynamometer significantly to be mentioned
Height, while principle and structure are simple compared with electric dynamometer, manufacturing cost is lower, is the automobile chassis dynamometer function of current mainstream
Rate absorption plant solution.
The main part of electric eddy current dynamometer is Retarder, is integrated with controller, power measurement arrangement also auxiliarily to cooperate
Carry out general test, type approval test and the research of various dynamic power machines.Currently, chassis dynamometer generally uses disc type current vortex
Machine is as device for power absorption.This body structure of disc type Retarder is relatively easy, and rotor is tray type structure, mutually ties with rotation axis
The rotation information of external testing roller is passed to power measurement arrangement by eddy current effect effect and reaches testing goal by conjunction.But
It is that, according to the requirement of national associated specifications, automobile chassis dynamometer itself needs to have comparable system inertia with mould
Inertia brought by quasi- automotive dead weight.And the disk rotor of disc type Retarder is since sole mass is smaller, therefore in Chassis dynamometer
It needs separately to meet test request with individual fly wheel system to increase system inertia in the application of machine, and makes chassis dynamometer
Structure is complicated changes, and leads to its higher cost, difficult in maintenance.In addition, windage is big in the course of rotation for disk rotor, in measurement of power mistake
Biggish parasitic power is generated in journey, as disc type dynamometer machine is that power loss is big in operating, and energy consumption is higher, does not have good
Energy-efficient performance.
Utility model content
The utility model provides a kind of drum-type Retarder, to solve the core of above-mentioned chassis dynamometer in the prior art
Center portion part Retarder system inertia is insufficient, parasitic power is big, needs that additional fly wheel system is cooperated just to be able to satisfy automobile bottom
The problem of disk dynamometer machine application requirement.
The technical solution adopted in the utility model is as follows：
A kind of drum-type Retarder, including drum-type rotor, the stator being placed in drum-type rotor, line shaft；It is described
Drum-type rotor includes barrel and the impeller that is fixedly connected with line shaft, and impeller and barrel end are interference fitted；It is described fixed
Attached bag includes the stator frame of line shaft rotatable engagement, several iron cores being fixed on stator frame, equal with iron core quantity and be placed on
Field coil assembly, magnetic yoke equal with iron core quantity and being fixed on iron core end face on iron core；The stator frame axial sides
Groove in be respectively and fixedly provided with bearing and dustproof cover from inside to outside, it is solid that stator frame far from the side of impeller is fixed with several exterior parts
Determine block；The stator for being fixed with bearing and dustproof cover and power between centers are rotatable engagement, and remote by being set on line shaft
Locking nut from impeller side is constrained in drum-type rotor.
The working principle and process of the utility model are as follows：
When work, it is powered by the oriented magnet exciting coil of external current controller to generate radial whirl ring, radial whirl ring
Magnetic induction line pass through magnetic yoke, make yoke magnetization and generate the fixed magnetic field of enhancing around magnetic yoke.Line shaft is in external power source
Drive under rotate, and drive be fixedly connected with line shaft rotor rotation, as rotor a part barrel synchronous rotation,
Also rotating cylinder drives air flowing to radiate to impeller therewith simultaneously.In rotor rotation process, worn by existing fixed magnetic field magnetic induction line
The barrel metal inside crossed polarizes so that barrel generate one stress magnetic field, velocity of rotation is faster, be vortexed cutting line
Speed is faster, stress magnetic field it is stronger.Stress magnetic field and fixed magnetic field generate repulsion each other, it is identical to generate two sizes, direction
The opposite moment of resistance, and it is respectively acting on barrel and stator.Since stator and power between centers are rotatable engagement, stator can hinder
Offset is rotated around axis under the action of torque, is set by the external resistance arm with force snesor or other kinds of power measurement
It is standby, the size of the moment of resistance is calculated, and then converse the torque situation of power source.
The technical program has adjusted the arrangement of magnet exciting coil, is radial by the axial eddy ring of former disc type Retarder
Ring of eddy avoids axial current, increases vortex cut radius, to enhance eddy current effect, improves Retarder
Response sensitivity；Using drum-type rotor instead of disk rotor, significantly improve Retarder itself rotary inertia and
It is vortexed cutting speed, when the power that it is used as discharge dynamometer machine loads absorption plant, can be expired without separately matching mass flywheel
Requirement of the sufficient standard to system inertia, this significantly simplifies the structure of chassis dynamometer；Barrel configuration is compared to tray type structure, wind
Resistance is obviously reduced, so that system resistance is small when Retarder works, therefore system in-fighting is small, is far below standard requirements value, contracts significantly
Short system response time.
Further, one side end of line shaft drum-type rotor is equipped with keyway.The keyway is for external power supply
Access, the power output that such as incoming dynamometer roller component is generated with the rotation of detection vehicle tyre.Because with power source
It is directly connected to, actual characteristic and variation small, therefore that reflect power source more accurately is lost in power input process.
Further, the barrel is manufactured using high magnetic conduction heat-resisting alloy.Since Retarder utilizes eddy current effect
As working principle, the energy consumed in work process is discharged in the form of thermal energy, thus it is long when work lower body temperature can be bright
It is aobvious to rise.The decline of , Dao Ci ability is serious under the high temperature conditions for common magnetic conductive metal, be easy to cause under the Retarder condition of high temperature and loses
Effect.High magnetic conduction heat-resisting alloy is because of stability of characteristics under its high temperature, and the initial value of magnetic conductivity and maximum are high, so that this drum-type is electric
The heat resistanceheat resistant decline performance of turbine is substantially better than existing disc type Retarder.
Further, bearing spacer is equipped on axis body part of the line shaft in stator and bearing surround.Bearing isolation
The application of set：The first, by the position-limiting action for the bearing spacer being installed on bearing, it is more favorable for the quick accurate positioning of bearing
With firm installation, stable bond and operating between line shaft, bearing and stator three had not only been helped in this way, but also were conducive to simplify
Assembling process, to improve the assembling quality of rotary part while saving assembly man-hour；The second, mitigate line shaft to electric whirlpool
The abrasion of stream machine airframe components, only needs to repair the line shaft of relative flimsiness when allowing to carry out maintenance or with changing, effectively
Ground protects Retarder body, reduces maintenance cost.
Further, the rolling external surface is equipped with heat dissipation groove.The application of heat dissipation groove increases barrel
External surface area improves roller external surface and air contact area.The supplementary means air-cooled as impeller, further increases
The heat-sinking capability of Retarder, significantly reduces organism temperature, preferably optimizes the heat resistanceheat resistant degenerative of this Retarder
Energy.
Preferably, the heat dissipation groove is strip.The external surface area of barrel can be dramatically increased in strip groove, protect
Heat dissipation effect is demonstrate,proved, while easy to process, has been effectively saved manufacturing cost.
Particularly, there is also second of operating modes：This operating mode principle is constant, and being eddy current effect generation stress
Magnetic field, and then interact with fixed magnetic field and generate the moment of resistance.But the course of work is varied：It is adjusted according to the required moment of resistance logical
The size of current of coil is overdrive, realization applies different resistances to power source.By this mode, Retarder can be provided
The systematization of running resistance is simulated, to assist the variation to power source under specific resistance environment to carry out detection and research.
In conclusion the beneficial effect of the utility model compared to the prior art is：
It (1) is radial whirlpool by the axial eddy ring of former disc type Retarder by adjusting the arrangement of magnet exciting coil
Ring is flowed, axial current is avoided, increases vortex cut radius, so that enhancing eddy current effect increases the moment of resistance, mention
The high response sensitivity of Retarder；
(2) rotary inertia of Retarder itself is significantly improved instead of disk rotor by using drum-type rotor
It is not necessarily to separately match mass flywheel when the power that it is used as discharge dynamometer machine loads absorption plant with vortex cutting speed
Meet requirement of the standard to system inertia, this significantly simplifies the structure of chassis dynamometer；
(3) barrel configuration is obviously reduced compared to tray type structure, windage, so that system resistance is small when Retarder works,
Therefore system in-fighting is small, is far below standard requirements value, substantially reduces system response time；
(4) by high magnetic conduction heat-resisting alloy, so that the heat resistanceheat resistant of this drum-type Retarder is failed, performance is substantially better than existing
Disc type Retarder has ensured high reliability of the Retarder in the case where working long hours；
(5) heat-sinking capability of Retarder is further improved by the groove that radiates, significantly reduces organism temperature, more
The heat resistanceheat resistant decline performance of this Retarder is optimized well；
(6) by the excellent heat dissipation performance of drum body structure itself, in addition half stator side is not closed, rotor-side is impeller
Open architecture enhances cross-ventilation, sufficiently simplifies the structure of Retarder and reduces the volume of Retarder, effectively
Ground, which avoids, to be needed due to bulky, the maintenance that increases Retarder caused by water cooling equipment under traditional closed structure because radiating
Difficult problem；
(7) design for passing through line shaft connection size allows the power source with different degree of strength to access, is significantly expanded
The power adaptation range of Retarder is suitable for all kinds of Light-Duty Gasoline Vehicles, gently, the emission test and vapour of heavy-duty diesel vehicle
Vehicle oil consumption measurement and chassis output power are tested, and the complemental brake system-retarder for being alternatively arranged as car and large-sized truck is used.
Detailed description of the invention
The main view schematic diagram of drum-type Retarder in Fig. 1 experimental example 1
The side diagrammatic cross-sectional view of drum-type Retarder in Fig. 2 experimental example 1
The absorption torque-rotation speed curve of drum-type Retarder in Fig. 3 experimental example 1
Absorption power-speed curves of drum-type Retarder in Fig. 4 experimental example 1
The main view schematic diagram of drum-type Retarder in Fig. 5 experimental example 2
The side diagrammatic cross-sectional view of drum-type Retarder in Fig. 6 experimental example 2
The absorption torque-rotation speed curve of drum-type Retarder in Fig. 7 experimental example 2
Absorption power-speed curves of drum-type Retarder in Fig. 8 experimental example 2
The main view schematic diagram of drum-type Retarder in Fig. 9 experimental example 3 with measuring arm of force
In figure label for：1, barrel, 2, magnetic yoke, 3, field coil assembly, 4, impeller, 5, line shaft, 5-1, bearing key
Slot, 5-2, keyway, 6, dustproof cover, 7, iron core, 8, bearing spacer, 9, locking nut, 10, bearing, 11, exterior part fixed block, 12,
Stator frame, 13, heat dissipation groove, 14, measuring arm of force.
Fig. 3, in 4, it is hot --- after maximum exciting current 24A, 1500r/min are run 12min minutes, temperature of rotor is greater than
600℃。
Fig. 7, in 8, it is hot --- after maximum exciting current 28.5A, 1500r/min are run 12min minutes, temperature of rotor is big
In 600 DEG C.
Specific embodiment
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
In order to make those skilled in the art more fully understand the technical solution of the utility model, below with reference to the He of Fig. 1~9
The utility model is described in further detail for specific embodiment.
Embodiment 1
A kind of drum-type Retarder as shown in Fig. 1~2, it is suitable for Light-Duty Gasoline Vehicle emission tests to be surveyed with chassis
Function machine, including drum-type rotor, the stator being placed in drum-type rotor, line shaft 5.Drum-type rotor includes resistance to using high magnetic conduction
The barrel 1 of thermalloy casting and the impeller 4 being fixed with line shaft 5 by bearing keyway 5-1, impeller 4 and 1 end of barrel
Portion's interior annular groove interference fit.Stator includes being uniformly distributed and being fixed on stator frame 12,4 of 5 rotatable engagement of line shaft
Iron core 7 on stator frame 12, and the field coil assembly 3, with iron core 7 quantity equal that is placed on iron core 7 on equal with 7 quantity of iron core
And it is fixed on the magnetic yoke 2 of 7 end face of iron core.About axle center angle in 90 ° between adjacent iron cores 7.Field coil assembly is by high conductivity
Insulation coat of paint copper wire on bobbin obtained by winding of single layer, while there are leads and foreign current input control apparatus to be connected
It connects.Be respectively and fixedly provided with bearing 10 and dustproof cover 6 in the groove of 12 axial sides of stator frame from inside to outside, stator frame far from impeller one
Side is fixed with 4 exterior part fixed blocks 11 that can be used for the fixed test attachment device including measuring arm of force.It is fixed with axis
Hold 10 and dustproof cover 7 stator pass through embedded between line shaft 5 and stator frame 12 bearing spacer 8 and line shaft 5 formed rotate
Cooperation, and be constrained in drum-type rotor by being set to the locking nut 9 on line shaft far from impeller side.5 turns of line shaft
One side end of cartridge type rotor sets keyway 5-2, the access for external power supply.1 outer surface of rolling element is equipped with heat dissipation groove 13.
From Fig. 3,4 and table 1 it is found that a kind of drum-type Retarder parameters described in the present embodiment all reach or are better than
National standard and level of going together.Wherein, system loss is 0.25kw (1000r/min), is not more than 1.5kW far below national standard
Requirement.
The technical parameter of drum-type Retarder in 1 embodiment 1 of table
| Peak torque | Nm | 1000 |
| Maximum speed | r/min | 3200 |
| Specified absorption power | kW/1800rpm | 160 |
| Voltage rating | V/DC | 192 |
| Maximum total current | A | 24 |
| All-in resistance | Ω | 8 |
| The balance quality of rotor | -- | G6.3 |
| The rotary inertia of rotor | kgm2 | 8.1 |
| Gross mass | kg | 285 |
Embodiment 2
A kind of drum-type Retarder as shown in Fig. 5~6, suitable for heavy-duty diesel vehicle emission test Chassis dynamometer
Machine, performance test chassis dynamometer, including drum-type rotor, the stator being placed in drum-type rotor, line shaft 5.Rotating cylinder
Formula rotor includes the barrel 1 and the impeller 4 fixed by pin hole cooperation with line shaft 5 using the casting of high magnetic conduction heat-resisting alloy,
Impeller 4 is fastened by bolts with 1 end interior annular groove of barrel.Stator includes stator frame 12,8 of line shaft rotatable engagement
Iron core 7, and the field coil assembly that is placed on iron core 7 on equal with 7 quantity of iron core for being uniformly distributed and being fixed on stator frame 12
3, magnetic yoke 2 that is equal with 7 quantity of iron core and being fixed on 7 end face of iron core.About axle center at 60 ° of angles between adjacent iron cores 7.Excitation wire
Coil assembly is as obtained by insulation coat of paint copper wire duolateral winding on bobbin of high conductivity, while there are leads and foreign current
Input control apparatus is attached.It is respectively and fixedly provided with bearing 10 and dustproof cover 6 from inside to outside in 12 two sides axial notch of stator frame, far
From the exterior part fixed block that drum-type rotor side is fixed with the test attachment device that 3 can be used for including measuring arm of force
11.The stator for being fixed with bearing 10 and dustproof cover 7 forms revolute constraint by the supporting role of bearing 10 and line shaft 5, and
It is constrained in drum-type rotor by being set to the locking nut 9 on line shaft far from drum-type rotor.5 drum-type of line shaft turns
A sub side end sets keyway 5-2, the access for external power supply.1 outer surface of rolling element is equipped with heat dissipation groove 13.
Shown in Fig. 7,8 and table 2, a kind of drum-type Retarder parameters described in the present embodiment all reach or are better than
National standard and level of going together.Wherein, system loss is 0.30kw (600r/min), is not more than 1.5kW far below national standard
Requirement.
The technical parameter of drum-type Retarder in 2 experimental example 2 of table
| Peak torque | Nm | 2500 |
| Maximum speed | r/min | 2500 |
| Specified absorption power | kW/1400rpm | 350 |
| Voltage rating | V/DC | 192 |
| Maximum total current | A | 28.5 |
| All-in resistance | Ω | 6.7 |
| The balance quality of rotor | -- | G6.3 |
| The rotary inertia of rotor | kgm2 | 11.2 |
| Gross mass | kg | 330 |
Embodiment 3
A kind of drum-type Retarder with measuring arm of force as shown in Figure 9, with drum-type electricity whirlpool described in embodiment 2
The difference of stream machine is：Measuring arm of force 14 is fixed with by 3 pieces of bolts on exterior part fixed block 11.In addition to above-mentioned difference, this reality
The other structures for applying drum-type Retarder described in example are identical as implementing 2, and the two technical parameter having the same.
Measuring arm of force is a kind of common torque transmitting in turbine field and measuring mechanism, stator when for working turbine
The measurement of the produced moment of resistance between rotor.By resistance arm, the drum-type Retarder being mounted on chassis dynamometer can
It will be passed out in the form of the size of the moment of resistance and variation the external impetus source information that line shaft obtains, for tester
Situations such as reduction obtains the revolving speed of tested power source, torque, power is further calculated, to realize that the function of chassis dynamometer is wanted
It asks.In addition, also can realize simulated resistance value size by measuring arm of force when drum-type Retarder is used as running resistance and simulates
And the monitoring of situation of change, and then tester or test program is enable correctly to adjust the size and variation of exciting current
Rule is to obtain accurate resistance simulation value.
The specific embodiment of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application protection scope therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection scope of application.
Claims (5)
1. a kind of drum-type Retarder, it is characterised in that：Including drum-type rotor, the stator being placed in drum-type rotor, move
Power axis (5)；The drum-type rotor includes barrel (1) and the impeller (4) being fixedly connected with line shaft (5), impeller (4) and rolling
Cylinder (1) end interference fit；The stator includes and the stator frame (12) of line shaft (5) rotatable engagement, several are fixed on
Iron core (7) on stator frame (12), and the field coil assembly (3) and iron that are placed on iron core (7) on equal with iron core (7) quantity
Core (7) quantity is equal and is fixed on the magnetic yoke (2) of iron core (7) end face；By inner in the groove of stator frame (12) axial sides
It is respectively and fixedly provided with bearing (10) and dustproof cover (6) outward, the stator frame (12) is fixed with outside several far from the side of impeller
Part fixed block (11)；Being fixed with is rotatable engagement between the stator of bearing (10) and dustproof cover (6) and line shaft (5), and by setting
The locking nut (9) on line shaft far from impeller side is placed in be constrained in drum-type rotor.
2. a kind of drum-type Retarder according to claim 1, it is characterised in that：The line shaft (5) is located at impeller
The end of side is equipped with keyway (5-2).
3. a kind of drum-type Retarder according to claim 1, it is characterised in that：The barrel (1) is led using height
Magnetic heat-resisting alloy is made.
4. described in any item a kind of drum-type Retarders according to claim 1~3, it is characterised in that：Line shaft (5) is fixed
Axis body part in son and bearing (10) encirclement is equipped with bearing spacer (8).
5. a kind of drum-type Retarder according to claim 4, it is characterised in that：Barrel (1) outer surface, which is equipped with, to be dissipated
Hot groove (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820523893.1U CN208125391U (en) | 2018-04-12 | 2018-04-12 | A kind of drum-type Retarder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820523893.1U CN208125391U (en) | 2018-04-12 | 2018-04-12 | A kind of drum-type Retarder |
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| Publication Number | Publication Date |
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| CN208125391U true CN208125391U (en) | 2018-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535024A (en) * | 2018-04-12 | 2018-09-14 | 成都新成汽车检测设备有限公司 | A kind of drum-type Retarder |
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2018
- 2018-04-12 CN CN201820523893.1U patent/CN208125391U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535024A (en) * | 2018-04-12 | 2018-09-14 | 成都新成汽车检测设备有限公司 | A kind of drum-type Retarder |
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