CN2456957Y

CN2456957Y - Speed signal read out device of electric vehicle

Info

Publication number: CN2456957Y
Application number: CN 00267713
Authority: CN
Inventors: 古焕隆; 罗志忠; 谢凯清; 吕俊贤
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2000-12-26
Filing date: 2000-12-26
Publication date: 2001-10-31
Anticipated expiration: 2010-12-26

Abstract

The utility model relates to a locomotive speed signal reading device for an electric locomotive. The utility model is characterized in that timing signals output by a motor and measured by a hall-effect sensor of the locomotive motor can be used to be matched with mechanisms such as a gear box set, rear wheels, a motor controller, etc., and a locomotive speed calculating and outputting unit is used for directly converting the timing signals produced by the motor to linear speed signals of the locomotive; then traveling speed information can be directly displayed on a locomotive speed meter, and a rotation speed sensor does not need to be arranged on a front wheel pivot of a locomotive body.

Description

The vehicle speed signal withdrawing device of electric locomotive

The utility model is about a kind of vehicle speed signal withdrawing device, be meant a kind of linear velocity signal that directly the timing signal that motor produced is converted to vehicle especially, again the road speed information directly is presented on the speed of a motor vehicle instrument, and need not on car body front-wheel pivot to install the vehicle speed signal withdrawing device of the electric locomotive of a rotating speed inductor.

Though commonly use electric locomotive all is as the power main element with motor, but because the speed-changing mechanism of its transmission gearbox is continuous variable speed, or, therefore in total system, do not have way by taking out signal in the motor as vehicle speed signal because motor is not provided with the timing signal generator; So at present all known locomotives 7 or electric locomotive all must take out vehicle speed signal (as shown in Figure 1) by a rotating speed inductor 73 is installed on the pivot 72 of front-wheel 71, this rotating speed inductor can be mechanical type or electronic type; Mechanical its mechanical signal of rotating speed inductor conducts on the speed of a motor vehicle instrument via the inside of rotating speed call wire rotation cable and (generally is the analog instrument that contains counting machine); And its electronic signal of rotating speed inductor of electronic type is passed on the speed of a motor vehicle instrument via the electric line on the general car and (is generally digital instrument).

Because material cost, the assembly cost of known rotating speed inductor are all higher, and the fault probability is also very high, therefore be not the mode of the very desirable speed of a motor vehicle number of winning the confidence.How not assemble the rotating speed inductor that adds again, and can provide vehicle speed signal to instrument carrier panel, to observe, be the purpose of this utility model for the driver.

This shows that the above-mentioned article of commonly using still have many disappearances, real non-one kindhearted design, and demand urgently being improved.

Every shortcoming that this case utility model people is derived in view of the above-mentioned rotating speed inductor of commonly using locomotive is urgently to think to be improved innovation, and after concentrating on studies through taking great pains to attain one's goal for many years, and successfully the vehicle speed signal withdrawing device of this part electric locomotive is finished in research and development finally.

The purpose of this utility model promptly is to provide a kind of vehicle speed signal withdrawing device of electric locomotive, utilize the timing signal of locomotive motor output, cooperate original creation of the present utility model mechanism, in order to produce vehicle speed signal, directly provide the vehicle speedometer dash board to show, the rotating speed inductor need be set, and can reduce material cost and assembly cost, reduce the fault probability of speed measuring device.

Can reach the vehicle speed signal withdrawing device of a kind of electric locomotive of above-mentioned utility model purpose, it includes: one group includes motor unit and timing signal generator, and utilizes a groups of motors of joining with the transmission gearbox group; One includes the transmission gearbox group of timing belt driving wheel, timing belt, timing belt flower wheel, gear case, driving gear and ring gear; One includes the motor controller of timing signal processing unit and vehicle speed signal output unit; It is characterized in that, also have a speed of a motor vehicle to calculate output unit in the timing signal processing unit, wherein, the motor unit of groups of motors and transmission gearbox group are mated mutually, and utilize the timing belt driving wheel to combine with the axial region of groups of motors, and the power of motor is passed to the timing belt flower wheel via timing belt in the mode of fixed rotating speed ratio, and the driving gear of timing belt flower wheel and gear case is coaxial, synchronize them rotation, driving gear again with fixed rotating speed than driving ring gear, make with the coaxial rear wheel of ring gear and rotate synchronously.

See also the detailed description and the accompanying drawing thereof of following relevant the utility model one preferred embodiment, can further understand technology contents of the present utility model and purpose effect thereof; The accompanying drawing of relevant this embodiment is:

Fig. 1 installs the scheme drawing that a rotating speed inductor takes out vehicle speed signal on the pivot of front-wheel of known locomotive; And

Fig. 2 is the enforcement scheme drawing of the vehicle speed signal withdrawing device of the utility model electric locomotive.

See also Fig. 2, reach the vehicle speed signal withdrawing device of electric locomotive provided by the utility model, mainly be by: groups of motors 1, transmission gearbox group 2, rear wheel 3, motor controller 4 and speed of a motor vehicle instrument 5 are constituted; Wherein, groups of motors 1 includes motor unit 11 and timing signal generator 12 (prior art), and utilizes one 13 and join with transmission gearbox group 2; Include timing belt driving wheel 21, timing belt 22, timing belt flower wheel 23, gear case 24, driving gear 25 and ring gear 26 in the transmission gearbox group 2; Motor controller 4 (prior art) includes timing signal processing unit 41 and vehicle speed signal output unit 411 etc.

Wherein, the motor unit 11 and the transmission gearbox group 2 of groups of motors 1 are mated mutually, and utilize timing belt driving wheel 21 to combine with the axial region 13 of groups of motors 1, and the power of motor is passed to timing belt flower wheel 23 via timing belt 22 in the mode of fixed rotating speed ratio, and the driving gear 25 of timing belt flower wheel 23 and gear case 24 is coaxial, so rotate synchronously, driving gear 25 fails 26 with fixed rotating speed than driving passive tooth again, make with the coaxial rear wheel 3 of ring gear 26 and rotate synchronously, the action that mat is above-mentioned makes motor unit 1 can become the relation of fixed rotating speed ratio with the rotation of rear wheel 3; Therefore, under normal driving condition, also under the situation of not skidding, can multiply by certain constant (quite for multiply by the circumference of rear wheel again divided by reduction ratio) with the rotating speed of motor and obtain the speed of a motor vehicle at that time for rear wheel.

Because the motor timing signal that timing signal generator 12 is produced all is electrically connected to the timing signal processing unit 41 of motor controller 4 with signal wire (SW), and carry out analytical calculation with soft, hardware wherein, general all with this timing signal as the monitoring of motor phase and the calculating of motor rotary speed; But in the utility model, also include a characteristic, also have a speed of a motor vehicle to calculate output unit 411 in this timing signal processing unit 41, it can obtain a vehicle speed value with aforesaid fixed constant with motor rotary speed is on duty, and this vehicle speed value signal is electrically connected on the speed of a motor vehicle instrument 5 with electric signal line 6, give the driver reference in order to show correct road speed.Therefore the utility model can not add any rotating speed inductor and just can obtain the road speed signal with the timing signal of motor, so can significantly reduce cost of parts, assembly cost and break down maintenance cost.

The vehicle speed signal withdrawing device of electric locomotive provided by the utility model, with previous located by prior art mutually relatively the time, have more following advantage: can not add any rotating speed inductor and just can obtain the road speed signal with the timing signal of motor, therefore can significantly reduce cost of parts, assembly cost and break down maintenance cost, be not easy the et out of order situation.

Above-listed detailed description is specifying at a possible embodiments of the present utility model, only this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model skill spirit does and implement or change, all should be contained in the claim of this case.

Claims

1. the vehicle speed signal withdrawing device of an electric locomotive, it includes:

One group includes motor unit and timing signal generator, and utilizes a groups of motors of joining with the transmission gearbox group;

One includes the transmission gearbox group of timing belt driving wheel, timing belt, timing belt flower wheel, gear case, driving gear and ring gear;

One includes the motor controller of timing signal processing unit and vehicle speed signal output unit; It is characterized in that,

Also have a speed of a motor vehicle to calculate output unit in the timing signal processing unit, wherein, the motor unit of groups of motors and transmission gearbox group are mated mutually, and utilize the timing belt driving wheel to combine with the axial region of groups of motors, and the power of motor is passed to the timing belt flower wheel via timing belt in the mode of fixed rotating speed ratio, and the driving gear of timing belt flower wheel and gear case is coaxial, synchronize them rotation, driving gear again with fixed rotating speed than driving ring gear, make with the coaxial rear wheel of ring gear and rotate synchronously.