CN201589708U - Single-locomotive rolling test rack based on winding asynchronous motor - Google Patents
Single-locomotive rolling test rack based on winding asynchronous motor Download PDFInfo
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- CN201589708U CN201589708U CN2009203533604U CN200920353360U CN201589708U CN 201589708 U CN201589708 U CN 201589708U CN 2009203533604 U CN2009203533604 U CN 2009203533604U CN 200920353360 U CN200920353360 U CN 200920353360U CN 201589708 U CN201589708 U CN 201589708U
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Abstract
The utility model relates to a single-locomotive rolling test rack based on a winding asynchronous motor. The single-locomotive rolling test rack comprises two counter force frames, one upper axle and a test unit group consisting of test units with the same number as the wheel pairs of a single locomotive, wherein in the test unit, the shaft of rail wheel pairs supporting the wheel pairs of the locomotive is connected with the shaft of the winding asynchronous motor; in addition, a stator winding in each winding asynchronous motor in the test unit group is connected to a power grid in parallel by a stator three-phase busbar; a rotor three-phase busbar is connected with three speed regulation resistances by a three-phase switch 4 in a star shape; two phases of the stator three-phase busbar are directly connected with a controlled rectifier by a switch 5, and the last phase thereof is connected with a switch 6 between the connecting points of the rotor windings of the adjacent two winding asynchronous motors; and the middle part of the shaft of the rail wheel pairs is provided with a flywheel. The test rack has the advantages of convenient synchronization, good reliability, simple structure, low investment, small occupied space, easy installing and debugging and convenient and simple testing.
Description
Technical field
The utility model relates to the fixation rolling rig of a kind of beeliner, electric locomotive, main line motor-car and subway motor-car.
Background technology
The function of railway power or diesel locomotive is the tractor-trailer train operation, and main operating mode is traction and braking, and the main operating mode of main line motor-car and subway motor-car also is traction and braking:
One, traction working condition: the electric energy that electric locomotive obtains from electrical network is after current transformer converts suitable voltage (also may comprise frequency) to, convert mechanical kinetic energy to by traction electric machine, all exportablely under different speed can train be quickened or the stable speed operation by the tractive force of driver control; Diesel locomotive then is earlier to convert the chemical energy of fuel oil to mechanical energy by internal combustion engine to drive the synchronous alternating-current generator generating, pass through current transformer again after, drive the operation of traction electric machine tractor-trailer train.
Two, damped condition: electric locomotive converts the kinetic energy of train to electric energy by traction electric machine, after conversions such as current transformer, feeds back to electrical network.Under different speed, output can be by the brake resistance of driver control, thereby makes train deceleration or speed stabilizing.Diesel locomotive then is to convert mechanical energy to electric energy by traction electric machine, by resistance heating consumption, makes train deceleration or speed stabilizing.
Railway locomotive is the mobile electromechanical equipment that power surpasses 2000kW, and its life cycle was generally 30 years, therebetween will be through repeatedly maintenance.In a single day locomotive breaks down, and will destroy the normal running order of railway, and for guaranteeing locomotive running gear and traction, braking ability, new car and tool car can drop into commencement of commercial operation after all must carrying out the circuit run-in test.
Adopt circuit run-in test mode, the straightforward procedure that traction and braking ability are tested is: adopt 2～3 locomotives to organize into groups, locomotive traction, 1 or 2 locomotive is as accompanying the test-run a machine car to brake in addition, be fixed on corresponding level (only test superlative degree position sometimes) by test locomotive operation handle by the driver, accompany the size of test-run a machine car damping force by change, the control train speed, behind velocity-stabilization, on the instrument system of cab, draw the travelling speed and the tractive force information of corresponding level; Change speed---the tractive force array that the damping force of accompanying the test-run a machine car can obtain other eight left and right sides friction speed points, just obtain a curve of traction characteristics; Change the handle level of tested locomotive again, then can obtain the curve of traction characteristics under another level; Many curve of traction characteristics can the tested locomotive of clear description hauling ability.
During brake test, accompany the test-run a machine car then to export tractive force and drive tested locomotive and advance; Tested locomotive then is in damped condition, and handle converts mechanical energy to electric energy by traction electric machine and realizes braking at specific level.Can draw equally the information of tested locomotive running speed and damping force on the instrument system of cab; Accompany the test-run a machine car to regulate the tractive force of car group, obtain the speed about ten---the damping force array promptly obtains a braking characteristic curve; Change tested locomotive handle level, then can obtain an other braking characteristic curve, the braking ability that many braking characteristic curves can the tested locomotive of clear description.
The locomotive slow-speed test can be carried out on several kilometers test wire under factory's section or belt test wire, and the test of rated speed then needs long circuit mileage, thread test just, and positive thread test causes very big pressure to busy road network.Therefore, adopt the fixation rolling rig to replace the selection that is inevitable of circuit running test.
The primary structure and the principle of work of engine static-state rolling rig are: the locomotive two ends are fixed by reaction frame, each of corresponding locomotive taken turns by disposing rail wheel that direct current generator drives to supporting, support the requirement of disalignment apart from locomotive in order to adapt to, equipment such as pair of tracks wheel and motor are formed a mechanical test unit.
During the traction working condition test, traction electric machine driving machine wheel is to rotation, and then drive rail wheel rotation, the direct current generator that links to each other with rail wheel, high-power electric load equipment consumes mechanical energy, for rail wheel provides rotational resistance, regulate the size that electrical load is also promptly regulated rotational resistance, make locomotive wheel be stabilized to different speed points, can read the speed about ten---the tractive force array, can obtain a curve of traction characteristics, change the traction level of locomotive, can obtain many curve of traction characteristics, according to the curve of traction characteristics that records, can judge whether the hauling ability of tested locomotive is qualified.
During brake test, direct current generator drive track wheel, and then provide rotary power for locomotive wheel, and make it be in specific braking level by the operation locomotive, convert the kinetic energy of locomotive wheel to electric energy feed back to electrical network or by resistance consumption by traction electric machine, and read speed---damping force array under this braking level from the instrument system of cab; And, can obtain ten left and right sides speed---damping force array, and then obtain a braking characteristic curve by regulating the power of direct current generator; Change the braking level of locomotive, can obtain an other braking characteristic curve by the power of regulating the testing table motor again,, can judge whether the hauling ability of tested locomotive is qualified by many braking characteristic curves.
The fixation rolling test is convenient, and test condition is controlled, good reproducibility, and high-speed test (HST) safety, the test period is short, and the participant is few, and it is fast to obtain test findings, also can change the gauge of simulation easily.Therefore the fixation rolling rig has obtained extensive utilization in the performance history of the rolling stock, particularly hot-short of nearly half a century.Test of fixation rolling rig and ring road are tested, road test is arranged side by side, become three kinds of modes of locomotive test.
Although testing table significant progress has been arranged, but still there are the following problems through years of development:
1), be arranged at and produce and the testing table of maintenance unit, the general employing gone up vehicle bridge and got on or off the bus with the method for walking wheel rim, the right wheel rim of locomotive wheel contact with last vehicle bridge rigidity, the stress of wheel rim is concentrated, is easy to generate to be out of shape and crackle; And adopt the mode of tread to get on or off the bus, and then need very complicated utility appliance, could adapt to the placement requirement of locomotive disalignment distance.
2), the torque of locomotive always has the fluctuation more than 5%.Locomotive is at rig-testing, its speed is only embodied by the locomotive wheel rotating speed, car body does not move, therefore the equivalent moment of inertia that is embodied in the traction electric machine spin dynamics equation is reduced to about 1/20 of circuit operation, influenced by it, the unsettled situation of speed may appear in the locomotive closed-loop control system according to the design of circuit operation conditions in the fixation rolling test.The dynamic instability of this locomotive is the major obstacle that realizes electric adjusted in concert precision, and the conceptual design of many testing tables is not familiar with this, does not more have corresponding structural measure.
3), the fixation rolling rig is right by separate a plurality of rail wheels, finish in the process of test at two straight rail of endless of simulation, many-sided factor can cause the rotating speed difference that each rail wheel is right, make locomotive think that some takes turns idle running taking place and to its control torque output by mistake, again it is recovered output again subsequently, make the locomotive operation instability; Especially when locomotive starts, will cause output torque frequently to stop, locomotive can not normally be started.Synchronous to the anglec of rotation for guaranteeing each rail wheel, existing testing table adopts bevel gear that all track wheel shafts are tied more, and this makes its mechanical part many, and intermediate connecting shaft is long, testing equipment is complicated, reliability reduces.For the locomotive of the disalignment distance of aliging, numerous mechanical connecting elements also makes its mechanical adjustment work amount big simultaneously, and major axis still causes extraneous vibration and unsafe factor.
Problem in view of the mechanical synchronization scheme, the domestic fixation rolling rig that has adopts the exciting current of regulating each direct current generator, and the scheme that rail wheel is reached unanimity to rotational speed, " diesel locomotive testing table power measurement arrangement governing system " as 1981, this scheme needs the extra observing and controlling closed-loop system that increases, simultaneously since between each traction electric machine of locomotive in the whole traction electric machine parallel connections of " car control " pattern, and 2～3 motor parallels during the frame control, drive by public power, these motors are in speed, the coupled relation that exists common source to bring between the torque, when testing table is regulated the right rotating speed of rail wheel, there is other driving wheel speed of coupled relation also conversion can take place, produces cross interference.When practical application, this scheme need be adjusted repeatedly at concrete locomotive at least, uses very inconveniently, and the locomotive wheel speed instability problem that simultaneously has such rotation inertia to reduce to bring again will realize that satisfied synchronous rotation is very difficult.
4), the hauling ability of engine static-state rolling rig is tested needs employing high power DC electric machine; And, must adopt gear box shifting could satisfy the requirement of AC drive locomotive test speed wide region because direct current generator operating rate scope is little.The existence of change gear case had both made the equipment complexity of testing table, and the cost height makes installation again, adjusts complexity.
5), the motor of complicated synchronization mechanism link, power shift gear case and drive track wheel all can only be installed in the right side of rail wheel, thereby make its installation region need width more than 6 meters.And before locomotive is appeared on the stage, remove the reaction frame of erectting on the ground, after locomotive moves longitudinally to the testing table position, reaction frame is installed again; Moving of reaction frame all needs driving, and needs to be provided with chain between driving and the contact net.Therefore the test factory building is required height, the test operation complexity is limited by the place, and the fixation rolling rig is difficult to build in existing servicing depot, section.
In a word, existing testing table adopts direct current generator that moving/drag torque is provided, and electric mainly is to rely on direct current generator to carry out armature or adjustment of field excitation synchronously, and regulating effect adopts mechanical synchronization workload when adjusting very big again all the time not as people's will.
The utility model content
The purpose of this utility model provides a kind of single bus rolling rig based on wound asynchronous motor, and this kind testing table synchronizer is simple, reliable, take up room little, Installation and Debugging easily, test is convenient.
The utility model is realized its goal of the invention, the technical scheme that is adopted is: a kind of single bus rolling rig based on wound asynchronous motor, comprise 2 reaction frames and 1 last vehicle bridge, with the test cell group that the separate unit locomotive wheel constitutes the same number of test cell, its design feature is:
The composition of described test cell is that the right right axle of rail wheel of support machine wheel is connected with the wound asynchronous motor axle; And:
The stator winding of the wound asynchronous motor of each test cell is by the parallel connection of stator three-phase bus bar in the test cell group, and the stator busbar links to each other with electrical network by threephase switch one; Simultaneously the stator three-phase bus bar also connect three energy consumption resistances one that star connects by switch two, connect three electric capacity one that star connects by switch three;
In the test cell group, the rotor winding of the wound asynchronous motor of each test cell is parallel on the rotor three-phase bus bar; Rotor three-phase bus bar is connected to the speed adjusting resistance that three stars connect by threephase switch four; Rotor three-phase bus bar also directly links to each other with controlled rectifier by switch five.
In the test cell group, the middle part of the axle that rail wheel is right is equipped with flywheel.
This kind technical scheme is suitable for the static state test of separate unit locomotive, and its course of work and principle are:
One, starts synchronously
With one closure of the threephase switch on the stator busbar, thereby the stator winding of the wound asynchronous motor of each test cell in the test cell group is linked to each other with electrical network by stator three-phase bus bar and threephase switch one.The rotor winding of each wound asynchronous motor is parallel with one another like this, and stator winding then is parallel on the electrical network, forms the electric axis circuit, can guarantee that rail wheel rotates synchronously.
Electric axis circuit working principle is: the threephase stator winding of each wound asynchronous motor is parallel to electrical network, produce rotating magnetic field in the motor gas-gap, three-phase symmetric winding position of rotation as each wound asynchronous motor rotor is identical, then the induced potential equal and opposite in direction of Chan Shenging is cancelled out each other, the rotor winding loop does not produce electric current, the equal no-load running of wound asynchronous motor does not produce the adjusted in concert torque.The power torque that is as a certain motor shaft increases or the load torque minimizing, relative remaining motor, rotor produces leading rotational angle theta, synthetic electromotive force is non-vanishing, and the rotor winding loop produces the real component of electric current, and the adjusted in concert torque of formation will make this motor slow down, all the other motors quicken, finally set up new balance, make the rotating speed of each motor shaft identical, but outer corner difference θ.Therefore, when threephase switch one and switch six conductings, and rest switch disconnects, and during the electric axis circuit working, can guarantee that the rotating speed of each wound asynchronous motor is identical, also is that the rotational speed of each rail wheel is identical, the simple and effective synchronous rotation that has guaranteed that each rail wheel is right.
There is the electric axis circuit to guarantee, the diameter/length of wound asynchronous motor ratio is greater than 1 simultaneously, make test cell that bigger moment of inertia be arranged, can effectively suppress the fluctuation of speed that locomotive causes because of torque pulsation, after the locomotive traction handle placed suitable traction low-grade location, wheel accelerates to the corresponding slow-speed of revolution synchronously reposefully, such as 50r/min, check the angle of attack of the relative locomotive wheel of rail wheel axis to axis, and levelling, by regulating the locomotive handle, suitably improve wheel again to rotating speed, and keep this rotating speed, promptly finish test preliminary work.
Two, traction working condition test: after test preliminary work is finished, it is motionless that driver's handle position keeps, threephase switch on the stator busbar one is disconnected, and with threephase switch on the stator three-phase bus bar two and threephase switch three closures, thereby the stator winding of each wound asynchronous motor is communicated with three energy consumption resistances one and three electric capacity one of Y-connection, and disconnects with power supply.Switch four keeps disconnecting simultaneously, and with switch five closures that link to each other with controlled rectifier in the rotor three-phase bus bar, thereby make in the rotor winding of each wound asynchronous motor 2 to be in parallel and to be in series with another again, provide the DC excitation electric current by controlled rectifier to the rotor winding unification of each wound asynchronous motor, make wound asynchronous motor operate in the synchronous generator state, the kinetic energy of locomotive, after the wound asynchronous motor of process synchronization operation changes into electric energy, consume by three energy consumption resistances that are communicated with stator winding, form synchronous measurement of power circuit thus.This circuit is after the rail wheel rotating speed reaches certain numerical value, in the stator winding of motor, produce bigger induced potential, as the rotor anglec of rotation error is arranged, then there is circulation to produce in the Bing Lian stator circuit, can form the torque of rotation synchronously of good assurance rail wheel, by regulating the exciting current on the rotor winding, the axle head rotational resistance of regulator generator, locomotive is stabilized on different speed or the tractive force numerical value, and drawing curve of traction characteristics under this traction level from the instrument system of locomotive, the operation locomotive makes it be in different traction levels, repetitive operation exciting current, record data, thus the test of traction working condition finished.
Three, damped condition test: after test preliminary work is finished, perhaps after the traction working condition test, make locomotive accelerate to suitable speed synchronously by handle, make the testing table machine operation at the electric axis circuit state, again with four closures of the threephase switch on the rotor winding by switch transition; Like this, the rotor winding links to each other with speed adjusting resistance, and wound asynchronous motor is operated in electric motor state, by the rotation of rail wheel driving machine wheel, for the locomotive brake test provides power; At last the locomotive handle is placed on suitable braking level, thereby finishes the braking function test of locomotive.
During no matter traction still was the circuit conversion of brake test, test cell had bigger moment of inertia can reduce speed difference between wheel, keeps the normal operation circumstances of locomotive traction kinematic train.
In a word, the utility model makes wound asynchronous motor be operated in three kinds of states respectively by circuit conversion, the electric motor state when the synchronous generator state when the synchronous electric axis circuit state when promptly starting, traction working condition, damped condition; Provide power for locomotive when providing load, damped condition for locomotive when the synchronous assurance that starts each rail wheel, traction working condition are provided when being respectively locomotive test.
Compared with prior art, the beneficial effects of the utility model are:
One, directly adopts wound asynchronous motor to pass through circuit conversion and directly constitute synchronous electric axis circuit, the simple and effective reliable synchronization of each rail wheel when having realized starting, the synchronous motor regulating and controlling system that has saved complicated mechanical axle connection synchro system or direct current generator, it is simple in structure, debugging is convenient, good reliability.Especially at the disalignment distance of different locomotives, mechanical axis connects need carry out complicated adjustment synchronously, and the motor of each test cell of the utility model connects by cable, at the disalignment distance, the adjustment amount of testing table significantly reduces, thereby has shortened test setup time.
Two, connect by the circuit conversion winding, asynchronous machine is worked in both do the load of synchronous generator as the locomotive traction working condition tests, the locomotive wheel when doing motor for damped condition again provides driving force; And owing to exchange big, the operating rate wide ranges of the power of wound asynchronous motor, also saved the gear case that direct current generator must adopt because torque is little, further made it simple in structure, cost is low, installs, adjusts easily.
Three, the diameter/length of wound asynchronous motor ratio is greater than 1, it can directly be installed on the axle head of rail wheel one side, perhaps making form such as tubular shaft is installed in the middle of the axle of rail wheel by the expansion set shaft coupling, further reducing test cell is the width of testing table, the width of required installation region is 4 meters or 2.4 meters, floor area is little, and the test factory building requires low, can directly build easily in existing servicing depot, section.
The right axle of above-mentioned rail wheel also is connected with the axle of synchronous motor simultaneously, and the diameter/length ratio of synchronous motor is greater than 1;
In the above-mentioned test cell group, the electric connecting mode of the synchronous motor of each test cell is: the stator winding of synchronous motor is parallel on the synchronous motor stator three-phase bus bar; The synchronous motor stator three-phase bus bar is connected to the electric capacity two that three stars connect by switch seven, also is connected to the energy consumption resistance two that three stars connect by switch eight, after the rotor winding of synchronous motor is connected in series mutually, is connected with controlled rectifier again.
This single bus loacting test rack that is connected with synchronous motor, its course of work and principle are:
One, start synchronously: at first all wound asynchronous motors are pressed above synchronous start-up operation, it is linked to be the electric axis circuit, the electric axis circuit can guarantee that each rail wheel rotates synchronously; Operate tested locomotive again, make it be in low-grade traction level, each wheel of locomotive is to being pulled motor-driven, and the electric axis circuit is synchronous, accelerates to the corresponding slow-speed of revolution, and the synchronous rotation of finishing each rail wheel starts.By controlled rectifier the rotor winding of all synchronous motors that are serially connected is carried out excitation again, make it be operated in the synchronous generator state.
Two, traction working condition test: the operation locomotive makes it be in specific traction level, with seven, eight closures of the switch on the synchronous motor stator busbar, thereby connect capacitor two and energy consumption resistance two, regulate the exciting current of synchronous motor again by controlled rectifier, the kinetic energy of locomotive is worked in after generator state synchronization motor converts electric energy to, consumed by energy consumption resistance two, with the tractive load and the gradient resistance of simulation locomotive, greatly then the locomotive load is big for exciting current; So just can draw the tractive force family curve, change the traction level, the re-adjustments exciting current then can obtain many tractive force family curves, thereby finishes the hauling ability test.
If after the synchronous motor rotating speed reaches suitable numerical value, when the synchronous motor that applies full excitation has enough synchronizing capacities, also can also convert wound asynchronous motor to the synchronous generator machine circuit, i.e. energy consumption resistance one and electric capacity one UNICOM that stator winding and three-phase star is connect by the switch on its stator busbar, the rotor winding is powered by the thyristor excitation power supply, then wound asynchronous motor also works in the generator state, can be rail wheel double adjustable resistance is provided, and strengthens the ability of pulling test.
Three, damped condition test: after locomotive reaches specific travelling speed, resistance and electric capacity that disconnection links to each other with the synchronous motor stator winding, keep suitable excitation, each synchronous motor is in the light condition of stator winding parallel connection, can rely on its circulation to guarantee the rail wheel rotation synchronously, synchronizing capacity is further enhanced; Convert wound asynchronous motor to the electric axis circuit, then with four closures of the switch on the wound asynchronous motor rotor three-phase bus bar, connect the epitrochanterian speed adjusting resistance of wound asynchronous motor, like this, wound asynchronous motor is operated in electric motor state, by the rotation of rail wheel driving machine wheel, for the locomotive brake test provides power; Locomotive then is in specific braking level by operation, thereby finishes the damped condition test of locomotive.
In a word, this testing table still forms three kinds of duties by the circuit conversion form: one, start synchronously, wound asynchronous motor is operated in the electric axis circuit state, finishes locomotive and respectively takes turns right synchronous startup; Two, locomotive wheel to synchronous startup to suitable speed, when synchronous motor had enough synchronizing capacities, the operation locomotive was in specific level, carries out pulling test, by all being operated in generator state synchronization motor or wound asynchronous motor as the load consumption traction power, its pulling test superior performance.Three, damped condition test, locomotive operation make wound asynchronous motor be operated in electric motor state, and each synchronous motor is in the unloaded synchronous regime of stator winding parallel connection to specific speed, and locomotive carries out brake test.
This single bus loacting test rack that has increased synchronous motor, because synchronous motor will be installed, the width of its required installation region is wideer: be 4 meters or 5.8 meters, but its same floor area still is lower than the requirement of 6～8 meters of existing testing tables, still not high to the requirement of test factory building, can directly build in existing servicing depot, section.
Its advantage is: in entire test, the rotor of the synchronous motor of each test cell all is subjected to unified exciting current effect, asynchronous machine is under the excitation effect of electrical network, can guarantee in whole velocity ranges that the synchronizing capacity between the rail wheel is during traction working condition test simultaneously, wound asynchronous motor can be operated in the generator state, synchronous motor then is operated in the generator state always, and its test capability is multiplied, and is particularly suitable for the pulling test of large power overloading low speed locomotive.
Above-mentioned last vehicle bridge and locomotive wheel have groove to the contacted position of wheel rim, are embedded with the material that hardness is lower than wheel in groove.Before on-test, during bridge on the locomotive (reaching testing table), can reduce the stress of locomotive wheel wheel rim and concentrate and distortion like this, reduce destruction wheel rim of locomotive.
Above-mentioned reaction frame integral body places the concrete well adaptive with it, on the base plate of reaction frame, is fixed with vertical electric screw lifter, has power supply on the base plate and moves the screw hole that the screw rod of screw elevator passes.
Like this before on-test, reaction frame integral body places the concrete well adaptive with it, locomotive can not be subjected to stopping of reaction frame, directly sail on the assigned position of testing table, make vehicle wheel pair and rail wheel to centering, operate the lifter on the reaction frame again, its screw rod is stretched out downwards, withstand and mix the earth bottom.Along with the continuous elongation of screw rod, reaction frame then protrudes upward to assigned position, will be in two reaction frames middle locomotive and reaction frame again and fix, and promptly finishes the preceding installation preliminary work of experiment.After having tested, remove the fixing of locomotive and reaction frame, operate vertical electric lift again, make screw retract, reaction frame promptly sinks to and mixes in the earth well, will get final product on the well lid.Than the existing reaction frame that is installed on ground, need remove reaction frame before getting on the bus, need again after getting on the bus reaction frame to be retracted and fixed, reaction frame of the present utility model makes test preliminary work, does not need driving, saves capital expenditure, simple, convenient, reduce requirement to the test(ing) plant house.
The middle part of the axle that above-mentioned rail wheel is right is equipped with flywheel.Like this, the shared bearing of flywheel and rail wheel simply, has effectively increased the moment of inertia that pilot system middle orbit wheel shaft is, makes its moment of inertia and road test more approaching, and does not increase the volume of testing table.
The utility model is described in further detail below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Fig. 1 is the plan structure synoptic diagram of the utility model embodiment one (locomotive is not appeared on the stage).
Fig. 2 is the plan structure synoptic diagram of the utility model embodiment two (locomotive is not appeared on the stage).
Fig. 3 is the A-A cut-open view among the utility model Fig. 1, Fig. 2.
Fig. 4 is the end view of the utility model embodiment one (locomotive is appeared on the stage and removed reaction frame).
Fig. 5 is the end view of the utility model embodiment two (locomotive is appeared on the stage and removed reaction frame).
Fig. 6 is the I-I partial enlarged drawing among Fig. 4, Fig. 5.
Fig. 7 is the electrical principle synoptic diagram of the utility model embodiment one.
Fig. 8 is the electrical principle synoptic diagram of the utility model embodiment two.
Embodiment
Embodiment one
Fig. 1, Fig. 3, Fig. 7 illustrate, a kind of embodiment of the present utility model is: a kind of single bus rolling rig based on wound asynchronous motor, comprise 2 reaction frames 1 and 1 last vehicle bridge 2, with the test cell group of separate unit locomotive wheel to 41 the same number of test cells formations, wherein: the composition of described test cell is, the support machine wheel is connected with 36 of wound asynchronous motors 43 axle 41 rail wheel; The diameter/length ratio of wound asynchronous motor is greater than 1, and rail wheel also is equipped with flywheel (38) to the middle part of the axle of (43), and flywheel 38 and rail wheel are to 43 shared bearings.
Fig. 7 illustrates, and the stator winding of the wound asynchronous motor 36 of each test cell is by 53 parallel connections of stator three-phase bus bar in the test cell group, and stator busbar 53 links to each other with electrical network by threephase switch 1; The three-phase of stator three-phase bus bar 53 connects three energy consumption resistances 1 that star connects by switch 2 54 simultaneously, connects three electric capacity 1 that star connects by switch 3 56;
Fig. 7 also illustrates, and in the test cell group, the rotor winding of the wound asynchronous motor of each test cell is parallel on the rotor three-phase bus bar 49; Rotor three-phase bus bar 49 is connected to the speed adjusting resistance 47 that three stars connect by threephase switch 4 48; Rotor three-phase bus bar 49 directly links to each other with controlled rectifier 51 by switch 5 50.
Fig. 4, Fig. 6 illustrate, and last vehicle bridge 1 has groove with locomotive wheel to the contacted position of 41 wheel rims, is embedded with the material 42 that hardness is lower than wheel in groove.
Fig. 1,3 illustrates reaction frame 1 integral body and places the concrete well adaptive with it, on the base plate 3 of reaction frame 1, is fixed with vertical electric screw lifter 4, has power supply on the base plate and moves the screw hole that the screw rod 5 of screw elevator 4 passes.
Embodiment two
Fig. 2, Fig. 3, Fig. 5, Fig. 6, Fig. 8 illustrate, and the structure of this example and embodiment one is basic identical, and different is: rail wheel also is connected with the axle of synchronous motor 30 simultaneously to 43 axle, and the diameter/length ratio of synchronous motor 30 is greater than 1; Rail wheel is not installed flywheel on 43.
In the test cell group, the electric connecting mode of the synchronous motor 30 of each test cell is: the stator winding of synchronous motor 30 is parallel on the synchronous motor stator three-phase bus bar 61; Synchronous motor stator three-phase bus bar 61 is connected to the electric capacity 2 77 that three stars connect by switch 7 76, also is connected to the energy consumption resistance 2 75 that three stars connect by switch 8 64, after the rotor winding of synchronous motor 30 is connected in series mutually, is connected with controlled rectifier 51 again.
The right number of rail wheel of the present utility model is identical to number with the wheel of tested locomotive, is generally 4 or 6.Certainly, if the wheel of tested locomotive changes to number, rail wheel to 43 and the number of corresponding wound asynchronous motor 36 and synchronous motor 30 also in company with changing.
Claims (5)
1. the single bus rolling rig based on wound asynchronous motor comprises 2 reaction frames (1) and 1 last vehicle bridge (2), with the test cell group of separate unit locomotive wheel to (41) the same number of test cell formation, it is characterized in that:
The composition of described test cell is, the support machine wheel spool is connected the axle of (43) and wound asynchronous motor (36) the rail wheel of (41); The diameter/length of wound asynchronous motor compares greater than 1, and:
The stator winding of the wound asynchronous motor of each test cell (36) is by stator three-phase bus bar (53) parallel connection in the test cell group, and stator three-phase bus bar (53) links to each other with electrical network by threephase switch one (63); Stator three-phase bus bar (53) also connects three energy consumption resistances one (55) that star connects by switch two (54) simultaneously, connects three electric capacity one (57) that star connects by switch three (56);
In the test cell group, the rotor winding of the wound asynchronous motor of each test cell (36) is parallel on the rotor three-phase bus bar (49); Rotor three-phase bus bar (49) is connected to the speed adjusting resistance (47) that three stars connect by threephase switch four (48); Also directly link to each other with controlled rectifier (51) in the rotor three-phase bus bar (49) by switch five (50).
2. a kind of single bus rolling rig based on wound asynchronous motor according to claim 1 is characterized in that;
Described rail wheel also is connected with the axle of synchronous motor (30) simultaneously to the axle of (43), and the diameter/length ratio of synchronous motor (30) is greater than 1;
In the test cell group, the electric connecting mode of the synchronous motor of each test cell (30) is: the stator winding of synchronous motor (30) is parallel on the synchronous motor stator three-phase bus bar (61); Synchronous motor stator three-phase bus bar (61) is connected to the electric capacity two (77) that three stars connect by switch seven (76), also be connected to the energy consumption resistance two (75) that three stars connect by switch eight (64), after the rotor winding of synchronous motor (30) is connected in series mutually, be connected with controlled rectifier (51) again.
3. a kind of single bus rolling rig according to claim 1 and 2 based on wound asynchronous motor, it is characterized in that: the described vehicle bridge (2) that goes up has groove with locomotive wheel to the contacted position of (41) wheel rim, is embedded with the material (42) that hardness is lower than wheel in groove.
4. a kind of single bus rolling rig according to claim 1 and 2 based on wound asynchronous motor, it is characterized in that: described reaction frame (1) integral body places the concrete well adaptive with it, on the base plate (3) of reaction frame (1), be fixed with vertical electric screw lifter (4), have power supply on the base plate (3) and move the screw hole that the screw rod (5) of screw elevator (4) passes.
5. a kind of single bus rolling rig based on wound asynchronous motor according to claim 1, its feature also is: described rail wheel is equipped with flywheel (38) to the middle part of the axle of (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203533604U CN201589708U (en) | 2009-09-08 | 2009-12-31 | Single-locomotive rolling test rack based on winding asynchronous motor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920176672.2 | 2009-09-08 | ||
| CN2009203533604U CN201589708U (en) | 2009-09-08 | 2009-12-31 | Single-locomotive rolling test rack based on winding asynchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN201589708U true CN201589708U (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203533604U Expired - Lifetime CN201589708U (en) | 2009-09-08 | 2009-12-31 | Single-locomotive rolling test rack based on winding asynchronous motor |
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| CN (1) | CN201589708U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782469B (en) * | 2009-09-08 | 2011-12-21 | 西南交通大学 | Single-locomotive stationary rolling test rig |
| CN103777589A (en) * | 2012-10-26 | 2014-05-07 | 中国北车股份有限公司 | Remote control system for locomotive rolling platform test |
| CN108507805A (en) * | 2017-02-24 | 2018-09-07 | 中国铁建高新装备股份有限公司 | One kind being based on flywheel-generating set inertia simulation system |
| CN112082779A (en) * | 2019-06-12 | 2020-12-15 | 中南大学 | Real-time simulation test system for high-speed railway train running under earthquake action |
-
2009
- 2009-12-31 CN CN2009203533604U patent/CN201589708U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782469B (en) * | 2009-09-08 | 2011-12-21 | 西南交通大学 | Single-locomotive stationary rolling test rig |
| CN103777589A (en) * | 2012-10-26 | 2014-05-07 | 中国北车股份有限公司 | Remote control system for locomotive rolling platform test |
| CN108507805A (en) * | 2017-02-24 | 2018-09-07 | 中国铁建高新装备股份有限公司 | One kind being based on flywheel-generating set inertia simulation system |
| CN112082779A (en) * | 2019-06-12 | 2020-12-15 | 中南大学 | Real-time simulation test system for high-speed railway train running under earthquake action |
| CN112082779B (en) * | 2019-06-12 | 2022-09-30 | 中南大学 | Real-time simulation test system for high-speed railway train running under earthquake action |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100922 Effective date of abandoning: 20091231 |