A kind of electromagnetism liquid-cooled retarder with two claw pole electric generators
Technical field
The present invention relates to the brushless electromagnetism liquid-cooled retarder of a kind of self-excitation type, belong to vehicle brake technology field, relate in particular to a kind of electromagnetism liquid-cooled retarder with two claw pole electric generators.
Background technology
Electromagnetism liquid-cooled retarder is as a kind of auxiliary brake of vehicle, during its work, rotor is when rotating with rotating shaft, with the rotation of rotor, generating period changes air gap flux density, the magnetic field that the eddy current magnetism that stator inner surface produces and coil produce restricts mutually, moment can be acted directly on rotor, again braking moment is passed to power transmission shaft, thereby play car brakeing effect, the kinetic energy of vehicle can be that thermal energy consumption is fallen by this change of medium of magnetic field like this, and then reaches the effect of retarding braking.
The feature of electromagnetism liquid-cooled retarder maximum is contactless braking, effectively improve the braking ability of vehicle, compact conformation, quality lightens, and simple installation reduces maintenance, avoided environmental pollution, and can realize the electrodeless adjusting of braking moment, increase work efficiency, better adapt to the demand of vehicle.Self-excitation type electromagnetism liquid-cooled retarder has also had spontaneous electrical function in the advantage that has possessed electromagnetism liquid-cooled retarder, and having avoided increases or strengthen electric generator of vehicle and storage battery, also needn't consider the matching problem of retarder field power supply and vehicle power.
The patent of invention (number of patent application is 201210061808.1) that name is called " a kind of liquid cooling Self-inspired electric eddy current rail brake of salient pole structure " discloses a kind of self-excitation retarder that utilizes permanent magnet generator power supply, although solved brushless power-generating problem, but the inherent characteristic due to permanent magnetic material, permanent magnet generator is made rear its air-gap field and is substantially kept constant, when this causes generator operation, voltage-regulation and De-excitation at fault difficulty; During motor operation, Heng Gongshuaiqu is narrower, and speed adjustable range is limited; And permanent magnet is embedded on retarder rotor, and sealing is poor, surperficial oxidation easy to wear.
Summary of the invention
The object of the present invention is to provide a kind of electromagnetism liquid-cooled retarder with two claw pole electric generators, this retarder can overcome existing current vortex retarder structure and technical deficiency, and adopt a kind of novel self-excitation retarder structure, by rotation and non-contacting metal cambered surface, do cutting magnetic induction line motion and produce eddy current braking moment, this structure adopts brushless self power generation mode, saves energy, the enormous impact to automobile storage battery while having avoided retarder just to start; Unicoil, liquid-cooling heat radiation mode, have that assembling is simple and easy, simple in structure, to be easy to regulating and controlling, life-span long; The advantages such as retarder working temperature is low, heat fading is little, coil is difficult for burning.
For achieving the above object, the technical solution used in the present invention is a kind of electromagnetism liquid-cooled retarder with two claw pole electric generators, this retarder comprises retarder rotor, ring flange, retarder stator, water channel, wire sleeve, retarder coil, retarder fixed mount, control module, rectification module and retarder generator, and rotating shaft is the driving shaft of vehicle; Retarder rotor is connected with rotating shaft by spline, and retarder rotor is profile of tooth rotating disk, and two projections of fluted disc both sides are two salient poles of retarder rotor; Retarder stator inner circle is coaxial with retarder rotor cylindrical, retarder stator is arranged on frame flange dish, retarder stator is provided with for cooling water channel, water channel is connected with vehicle water tank by water pipe, cooling fluid in water channel and the liquid circulation in vehicle water tank, or circulate with the independent cooling device of retarder; Between retarder stator inner circle and retarder rotor salient pole cylindrical, keep 0.5~1mm gap; Retarder coil is the coil of an independent coiling and draws by the wire sleeve on retarder stator, and is connected to rectification module, concentrates the retarder coil of coiling be arranged between two salient poles of retarder rotor and be fixed on retarder stator inner wall.
Retarder master section comprises a pair of generator armature AB, a pair of generator armature winding AB unshakable in one's determination, dynamo field coil; Generator claw pole is distributed on retarder rotor inwall, is rotating parts; Generator armature AB unshakable in one's determination and generator armature winding AB are arranged on retarder fixed mount, are fixed part; Dynamo field coil is arranged between generator armature AB unshakable in one's determination, and fixes with retarder fixed mount; Generator armature winding AB is threephase alternator winding, through rectification module, is connected with retarder coil; Dynamo field coil is for concentrating winding, be connected by wire with vehicular power-bottle, control module one end is connected with dynamo field coil, for controlling the size of dynamo field coil electric current, the other end is connected to the input of rectification module in order to obtain a phase sinusoidal signal of retarder generator three-phase current, obtains the rate signal of retarder.
When retarder need to be worked, control module is connected dynamo field coil and vehicular power-bottle, generation current in dynamo field coil, in dynamo field coil, produce the magnetic line of force, generator claw pole on the retarder rotor of rotating shaft driven rotary forms rotating magnetic field, and the conductor cutting magnetic force lines in fixing generator armature winding AB produces three-phase alternating current electromotive force; This electromotive force changes three-phase alternating current into direct current by rectification module, is transported in retarder coil, makes retarder coil obtain exciting current, so produce the magnetic line of force in retarder rotor; The magnetic line of force that retarder stator cutting retarder rotor salient pole sends, in retarder stator, produce current vortex, produce and hinder the moment that retarder rotor rotates thereupon, this moment is passed to the rotating shaft of vehicle by the spline on retarder rotor, thereby realizes the object to the slow braking of vehicle; In braking procedure, because eddy current effect produces heat in stator water channel, by the cooling fluid in water channel, take away, cooling fluid, after the radiator heat-dissipation of engine water tank, is back to the work that moves in circles in retarder.
Control module is converted to square-wave signal by the sinusoidal signal collecting from generator armature winding, thereby obtain the rate signal of retarder, control module is according to the electric current in rate signal and gear signal regulator generator magnet exciting coil, electromotive force in generator armature winding AB changes, now, exciting current in retarder coil changes accordingly, thereby realizes the continuous adjusting of retarder braking moment.
When not needing to brake, control module is cut off the electric current in dynamo field coil, in generator armature winding AB, do not produce electromotive force, retarder coil excitation-free current, in retarder rotor, do not produce the magnetic line of force, on retarder stator inner wall, can not produce current vortex yet, can not produce braking moment, thereby remove the braking to vehicle.
Compared with prior art, the present invention has following beneficial effect.
1, the present invention only has retarder rotor to rotate, and outside is parts without spin, compare more safe and reliable with existing current vortex retarder; Dynamo field coil, generator armature winding and retarder coil are stationary coil, have realized brushless structure, and reliability is high, non-maintaining.
2, retarder coil adopts and concentrates the absolute coil of coiling to be sleeved in the middle of rotor disk, has simplified coil winding, installation and control; Rotor machine adopts two pawl utmost point modes, and the both sides pawl utmost point forms unipolarity magnetic pole, and magnetic leakage factor is little, generating efficiency is higher.
3, dynamo field coil is static, and the adjusting by the detection of retarder rotor rotating speed and exciting current, realizes the real-time control of retarder braking moment; Stator is provided with cooling water channel, adopts circulation cooling mode, good heat dissipation effect, and long-time braking moment heat fading is little; Retarder compact overall structure, volume mass is little.
Accompanying drawing explanation
Fig. 1 is the front view of structure of the present invention.
Fig. 2 is the left view of structure of the present invention.
Fig. 3 is the left cutaway view of electric generator structure of the present invention.
Fig. 4 is generator rotor structure schematic diagram of the present invention.
In figure: 1, rotating shaft, 2, retarder rotor, 3, ring flange, 4, retarder stator, 5, water channel, 6, wire sleeve, 7, retarder coil, 8, retarder fixed mount, 9, control module, 10, rectification module, 11, generator armature AB unshakable in one's determination, 12, generator armature winding AB, 13, dynamo field coil.
Embodiment
Below in conjunction with accompanying drawing, further specific embodiments of the invention are described.
Be illustrated in figure 1 the front view of invention structure, Fig. 2 is the left view of structure of the present invention, the left cutaway view of Fig. 3 electric generator structure of the present invention, a kind of electromagnetism liquid-cooled retarder with two claw pole electric generators, this retarder comprises retarder rotor 2, ring flange 3, retarder stator 4, water channel 5, wire sleeve 6, retarder coil 7, retarder fixed mount 8, control module 9, rectification module 10 and retarder generator, and rotating shaft 1 is the driving shaft of vehicle; Retarder rotor 2 is connected with rotating shaft 1 by spline, and retarder rotor 2 is profile of tooth rotating disk, and two projections of fluted disc both sides are two salient poles of retarder rotor 2; Retarder stator 4 inner circles are coaxial with retarder rotor 2 cylindricals, retarder stator 4 is arranged on frame flange dish 3, on retarder stator 4, be useful on cooling water channel 5, water channel 5 is connected with vehicle water tank by pipeline, cooling fluid in water channel 5 and the liquid circulation in vehicle water tank, or circulate with the independent cooling device of retarder; Between retarder stator 4 inner circles and retarder rotor 2 salient pole cylindricals, keep 0.5~1mm gap; Retarder coil 7 is the coil of an independent coiling and draws by the wire sleeve 6 on retarder stator (4), and be connected to rectification module (10), concentrate the retarder coil 7 of coiling be arranged between two salient poles of retarder rotor 2 and be fixed on retarder stator 4 inwalls.
Retarder generator comprises a pair of generator armature AB11, a pair of generator armature winding AB12 unshakable in one's determination, dynamo field coil 13; Generator claw pole is distributed on retarder rotor 2 inwalls, is rotating parts; Generator armature AB11 unshakable in one's determination and generator armature winding AB12 are arranged on retarder fixed mount 8, are fixed part; Dynamo field coil 13 is arranged between generator armature AB11 unshakable in one's determination, and fixing with retarder fixed mount 8; Generator armature winding AB12 is threephase alternator winding, through rectification module 10, is connected with retarder coil 7; Dynamo field coil 13 is for concentrating winding, be connected by wire with vehicular power-bottle, control module 9 one end are connected with dynamo field coil 13, for controlling the size of dynamo field coil 13 electric currents, the other end is connected to the input of rectification module 10 in order to obtain a phase sinusoidal signal of retarder generator three-phase current, obtains the rate signal of retarder.
When retarder need to be worked, control module 9 is connected dynamo field coil 13 and vehicular power-bottle, generation current in dynamo field coil 13, in dynamo field coil 13, produce the magnetic line of force, generator claw pole on the retarder rotor 2 of rotating shaft 1 driven rotary forms rotating magnetic field, and the conductor cutting magnetic force lines in fixing generator armature winding AB12 produces three-phase alternating current electromotive force; This electromotive force changes three-phase alternating current into direct current by rectification module 10, is transported in retarder coil 7, makes retarder coil 7 obtain exciting current, so the interior generation magnetic line of force of retarder rotor 2; The magnetic line of force that retarder stator 4 cutting retarder rotor 2 salient poles send, at the interior generation current vortex of retarder stator 4, produce thereupon and hinder the moment that retarder rotor 2 rotates, this moment is passed to the rotating shaft 1 of vehicle by the spline on retarder rotor 2, thereby realizes the object to the slow braking of vehicle; In braking procedure, because eddy current effect produces heat in stator water channel, by the cooling fluid in water channel 5, take away, cooling fluid, after the radiator heat-dissipation of engine water tank, is back to the work that moves in circles in retarder.
Control module 9 is converted to square-wave signal by the sinusoidal signal collecting from generator armature winding, thereby obtain the rate signal of retarder, control module 9 is according to the electric current in rate signal and gear signal regulator generator magnet exciting coil 13, electromotive force in generator armature winding AB12 changes, now, exciting current in retarder coil 7 changes accordingly, thereby realizes the continuous adjusting of retarder braking moment.
When not needing to brake, the electric current that control module 9 is cut off in dynamo field coil 13, in generator armature winding AB12, do not produce electromotive force, retarder coil 7 excitation-free currents, in retarder rotor 2, do not produce the magnetic line of force, on retarder stator 4 inwalls, can not produce current vortex yet, can not produce braking moment, thereby remove the braking to vehicle.