CN2264115Y

CN2264115Y - Electric locomotive having wheel skid-proof function

Info

Publication number: CN2264115Y
Application number: CN 95214589
Authority: CN
Inventors: 吕兴华
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-13
Filing date: 1995-07-13
Publication date: 1997-10-08
Anticipated expiration: 2005-07-13

Abstract

The utility model belongs to an electrically driving locomotive having wheel pair skid-proof and traction force increase functions. A main pole winding of each series excitation traction motor is additionally provided with a resistor and a rectifier. Thus, the utility model can inhibit idle rotation and ensure that each shaft of the locomotive can run according to the adhesion traction force.

Description

A kind of electric driving vehicle that prevents tyre skidding

The utility model belongs to that a kind of to control the locomotive tractive effort naturally be adhesive tractive effort, and prevents the electric driving vehicle of tyre skidding.

Increasing the locomotive tractive effort is the important topic that enlarges the railway capacity, because locomotive axle adhesion factor, different the reaching of axle adhesive tractive effort alter a great deal in time, cause wheel to skidding irregular and locomotive tractive effort decline, the control tractive force is an instant adhesive tractive effort, and then locomotive can be obtained best traction effect.

Address this problem common way and be and on locomotive, install sticking control device additional, as from the ND5 locomotive of U.S.'s import and homemade SS3B, SS5, DF6, DF10 locomotive.Its method is by electronics package supply unit on the locomotive to be regulated and control, and takes to fall the way of merit and stucco, stops tyre skidding and with the minimum adhesive tractive effort traction of axle.Then be the way that adopts separate excitation in addition, improve adhesion.But these way circuits are complicated, maybe can not make locomotive with each instant adhesive tractive effort operation, and cost is also high.

The purpose of this utility model is to provide a kind of electric driving vehicle, and it has the sticking control effect of nature, can prevent that idle running and each from moving by instant adhesive tractive effort.

The departure point of the utility model design is: be not to regulate and control from the power supply aspect, but improve function from traction aspect, loop, when circuit somewhere adhesion factor descends, or the traction motor electric current increases wheel when being about to dally, this spindle motor electric current reduces torque automatically and reduces, idle running is restrained, and tractive force is this adhesive tractive effort, and other axles are not restricted by this adhesive tractive effort.

The technical program is to realize like this; Series excitation traction motor on the locomotive is right by the transmission gear drive wheel, by means of power on the car.Accompanying drawing 1 is the schematic diagram of this programme, is the difference technical characterictic in the frame of broken lines, a main pole winding rectifying device in parallel among the figure.Utilize it that the traction motor counter potential is controlled, in order to stop full car idle running.Rectifying device still and a resistance R x is arranged in order to adjust sticking control scope.Resistance R b in the main pole winding loop, Rc go here and there respectively in main pole winding branch road and be in parallel with the main pole winding, and be poor in order to reduce the traction motor characteristic.

Fig. 2 is the speed characteristic of locomotive, and the ab section is sticking control district among the figure, and the sticking control effect of this programme is to realize like this, the traction motor main pole obtains the power supply of rectifying device constant voltage, and magnetic flux remains unchanged, if certain is taken turns being about to idle running, creep speed increases between wheel track, by transmission gear winding back emf is increased, armature current descends, and torque reduces, idle running is suppressed, because armature resistance is very little, so the creep velocity increment seldom, causes this axle to move by adhesive tractive effort.The effect of resistance R x is the sticking control of broadening district, and partial current is many more, sticking control Qu Yuekuan.

Bc section among the figure can be passed through transductor or All other routes, and artificially control rectifier output voltage and reduce, even cancellation, the traction motor magnetic flux breaks away from the no longer sticking control of strangulation, recovers the dropping characteristic that traction requires, the motor load distributed uniform.Because wheel shaft adhesion condition and adhesive tractive effort steep variation can both glue control, so locomotive can obtain optimum traction.

This programme is owing to only need to install rectifying device and resistance additional at original circuit, and structure is simpler, and expense is also few.It realizes that by circuit characteristic sticking control effect is more reliable, because every sticking control is independently carried out, not restricted by the minimum adhesive tractive effort of axle, so the locomotive tractive effort is big, estimates to improve more than 20%.

The utility model is described in further detail below in conjunction with embodiment.

Fig. 3 is the utility model SS3 locomotive traction circuit theory interconnecting wiring diagram, 6 positive bus-bar 1 and negative busbar 3 power supplies of doing the traction motor that uses in parallel by power supply on the car, string has line contactor 1-6XC in each traction motor branch road, DC current transformer 1-6ZLH, diverter 1-6ZFL, disconnector 1-6QGK, position changeover switch 1-6WH, and traction motor armature M1-6 and main pole winding.By WH and armature parallel resistor is braking resistor, and also going here and there between change-over swith 1-6WH and main pole winding has resistance R C1-6 and main pole and resistance R B1-6 is arranged, and it is poor to be used for reducing motor characteristic.Transductor BK powers after by automatic voltage regulator ZTY and voltage transformer B1 (B2) step-down, and output voltage is powered after rectification and given resistance R X, is added to simultaneously on the main pole winding, and the control coil string of BK is used for the regulation and control in non-sticking control district in the armature circuit of traction electric machine.

Present embodiment Rc is a 800A0-0.002 Ω adjustable resistance, and RB is a 40A0.02-0.2 Ω adjustable resistance, can select Cr25Al5 railway aluminium strip shape resistance product for use; Rx can use former car field weakening resistance, and the B1B2 step-down transformer is selected DSG-5/0.5 for use, and the automatic voltage regulator model is that TNSGC2-9 transductor BK output direct current is 10V200A.

Claims

1, a kind of electric driving vehicle that prevents tyre skidding is equipped with series excitation traction motor in parallel on this car, by the power supply of electrical locomotive power device, it is characterized in that a rectifying device in parallel on the main pole winding of series excitation traction motor, and rectifying device also has a resistance R x.

2, according to the electric driving vehicle of claim 1, it is characterized in that being equipped with on the car transductor, by the power supply of the traction transformer on the locomotive, the transductor output voltage is added on the main pole winding for resistance through power supply after the rectification simultaneously, and the control coil of transductor is serially connected in the armature circuit.