CN1024516C

CN1024516C - Remote control car transmission system

Info

Publication number: CN1024516C
Application number: CN91102013A
Authority: CN
Inventors: 简锡海
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-28
Filing date: 1991-03-28
Publication date: 1994-05-18
Anticipated expiration: 2006-03-28
Also published as: CN1065248A

Abstract

The invention relates to an improvement of a speed change transmission system of an electric remote control car, which takes a counter-rotating motor as a center, wherein a shell stator can also rotate relatively to be taken as power output, and respectively takes a transmission shaft to transmit the power of the motor from two output ends of the shell stator and an axis rotor to a front mechanical differential and a rear mechanical differential, and then the differential is utilized to lead a car to move forwards; two transmission shafts between the motor and the differential can be selectively locked, so that the output power of the motor can enable wheels to have different rotating speeds through the locking of different transmission shafts.

Description

Variable transmission system of telecontrol vehicle

The present invention relates to the variable ratio drive system of electrical remote control vehicle.

The development of telecar has greatly improved with wireless development, yet in transmission device, still adopt traditional approach, the telecar of development mostly has a direct current motor at present, include the driving system of simplifying diff to drive one, telecar is advanced, its velocity variations is only controlled by the rotating speed of motor, has only throttle and does not have change speed gear box as automobile, and speed ability can't be brought into play.So general telecar all lacks speed changing function, and speed changing function is very important for telecar.

The objective of the invention is to overcome above-mentioned shortcoming, propose a kind of variable ratio drive system that is applicable to telecar.

The battery-driven car variable ratio drive system that the present invention proposes is the center with a contrarotating motor, and this motor comprises: shell stator, axle center rotor, two plate electrode copper rings, bearing.Wherein motor inside has essential assembly such as magnetic pole, coiling, energising back axis rotor, shell stator can be rotated relatively, and the electrode copper ring of two relative contacts with the carbon brush with power supply is established in shell stator appearance appropriate location, makes motor when rotated, can continue supply power.Be provided with bearing in axle center and housing contacts both sides, with support rotor; Rotor axis is outputting power forward, and the shell stator end is connected with an output shaft that passes one of them bearing; Power is provided backward, when electric energy from carbon brush when coiling is given in copper ring input, shell stator and axle center rotor can turn round relatively, make motor power can do forward and backward relatively rotating speed output through the output shaft of rotor axis and shell stator.

The variable ratio drive system that the present invention proposes is a kind of to be hand gear formula, and another kind is the auto transmission formula; Wherein hand gear formula with can mutual counterrotating contrarotating motor between a shell stator and axle center rotor as the takeoff output source, again with two groups of differential controls wheels with different gears than number, utilize the locking of transmission shaft, can make wheel revolutions obtain speed changing function.The auto transmission formula is then with a screw rod, bevel wheel, elastic element and friction free-wheel principal organ as speed change, utilize resistance on the screw rod, make friction wheel automatically select to the suitable frictional position of bevel wheel, again through mechanism's formula diff drive wheels, wheel is advanced, have full automaticity gear speed changing function.

Below in conjunction with accompanying drawing and most preferred embodiment the present invention is described in detail, wherein:

Fig. 1 is the block diagram of traditional diff;

Fig. 2 is the sectional axonometric drawing of hand gear formula contrarotating motor of the present invention;

Fig. 3 is a three class gear shift driving device of the present invention;

Fig. 4 is the end face view of three class gear shift driving device of the present invention;

Fig. 5 is the centrifugal clutch among the present invention;

Fig. 6 is the thorn tooth wheel among the present invention.

Before not introducing the present invention in detail, for being easy to understand unitary construction of the present invention, the mode of first adversary's gear is described as follows:

Shown in Figure 1 is the traditional differential gear (Differential Gear) that is used for automobile, Hooke's coupling D1 reaches engine power on the transmission shaft D2 through the clutch speed varying machine, drive a Ring gear D4 through a helical wheel D3, driven on the left driving shaft D61 lockedly again by a pair of planetary wheel D5 that connects in the Ring gear D4, then the power that transmits of engine will reach on the right driving axle D62 fully.This kind locking type of drive is an emphasis of the present invention, holds the back narration.

A contrarotating motor 1 shown in Figure 2 is a propulsion source of the present invention.The structure of this contrarotating motor is quite special, and its power can turn round relatively via shell stator 11 and axle center rotor 12, and motor power is done forward and backward output.For reaching the also rotatable purpose of shell stator 11, the input of its power supply is to be provided with two copper rings 141,142 in shell 11, make by the power supply that imports in the storage battery that through a pair of carbon brush 13 and the input motor so shell stator 11 is also rotatable and do not influence the input of power supply.Be provided with bearing 15 in the both sides of axle center and housing contacts,, and make its smooth running in order to support rotor 12.The axle center 121 of rotor as motor stretch out forward, as the mouth of power, and another mouth of power is an output shaft 111 that adds on shell stator 11 ends, through bearing 16 and the output that can be used as power.Identical as for structures such as motor in-to-in magnetic pole, coilings with general motor.If design properly in advance, both rotor inertias of shell 11 rotating parts and axle center 12 parts can be made and equate; So when electric energy imports motor into after, then the clutch end of shell stator 11 has respectively 1/2 the rotating speed that equates with the clutch end of axle center 12 rotors and spreads out of; If with axle center 121 lockings, then motor power will be by outer output shaft 111 outputs.Otherwise then the motor power rotating speed will 121 outputs at full speed from the axle center.So, a contrarotating motor 1 also as the effect of preceding fast diff, can reach an equilibrium energy transfer function as can be known.

Hand gear of the present invention partly moves situation and is illustrated with three sections speed changes (3 Speed):

Please refer to Fig. 3 and Fig. 4, with above-mentioned contrarotating motor 1 as the propulsion source center, before and after being connected to

transmission shaft

21,22 respectively via forward and backward

flange

51,52 and

centrifugal clutch

41,42, its shell stator 11 and axle center rotor 12 on two diff 1D, the 2D, be connected with four tires 81,82,83,84 respectively with rotating shaft 31,32,33,34 again.Wherein, the appearance side of forward and backward

flange

51,52 side is provided with one and is connected to the control stalk 7 on the gear shift lever (not shown) in the car, and its end has " Jiong " type fork bar 71, and can pivoting point 72 be center shaft turn (imaginary line as shown in Figure 4); When control stalk 7 was controlled among Fig. 4 solid line position by gear shift lever, forward and backward two poles, 711,712 ends did not then contact with forward and backward

flange

51,52, and then the power of contrarotating motor 1 can be respectively by

shell stator

11 and 12 outputs of axle center rotor; When control stalk 7 is that the position is revolved when front support rod 711 contacts with front flange 51 in the center with pivoting point 72, then shell stator 11 is fixed, and the power of contrarotating motor 1 will be exported by axle center rotor 12; In like manner, when control stalk 7 is controlled so as to back stay 712 and afterwards flange 52 contacts, contrarotating motor 1 power will be exported by shell stator 11 directions.In addition, when forward and backward

flange

51,52 was done in 41,42 confessions of centrifugal clutch by locking,

transmission shaft

21,22 can dally, and avoided braking state to produce and influenced vehicle and advance.

Therefore, in above-mentioned power system structure, can have three sections speed changing effect.Suppose, before in the diff 1D the cog ratio of number of teeth of (Fig. 1) D3 of Ring gear (Fig. 1) D4 and transmission shaft 21 be 3: 1, then the cog ratio of number of teeth of (as the D3 among Fig. 1) of Ring gear (as the D4 among Fig. 1) and transmission shaft 22 is 3: 2 in the diff 2D, if the commentaries on classics scooter 9000rpm of contrarotating motor 1 can get following situation:

When 1,

transmission shaft

21,22 all rotated freely, then the axle center rotor was 6000rpm towards the rotating speed of front propeller shaft 21 conveyings, and the rotating speed of front-wheel rotating shaft should be 6000rpm * 1/3=2000rpm(wheel speed).In addition, the rotating speed that the shell stator is carried towards rear propeller shaft 22 is 3000rpm, and the rotating speed of rotation shaft of wheel is as 3000 * 2/3=2000rpm(wheel speed), so the vehicular four wheels rotating speed all together can be at same road traveling.

2, locked as the transmission shaft 22 that the shell stator is driven, the 9000rpm wheel speed that then motor provided is exported to front propeller shaft 21 by the axle center rotor fully, and the rotating speed that this moment, the front truck wheel shaft was had is 9000 * 1/3=3000rpm(wheel speed), the speed of a motor vehicle is accelerated.

3, unclamp as the transmission shaft 22 that the shell stator is driven, and the transmission shaft 21 of while locked axle center rotor driven, this moment motor the 9000rpm rotating speed with after reach on the transmission shaft 22, then have the rotating speed (wheel speed) of 9000 * 2/3=6000rpm on the rotation shaft of wheel, the speed of a motor vehicle is faster.

As at transmission shaft when locked, transmission shaft has centrifugal clutch arrangement, can be driven running by other wheels, and is unlikely stuck.Three kinds of above-mentioned situations can be done following utilization: when the 1st kind of situation, can be described as one grade of starting, because this moment, four wheels drove simultaneously, thus bigger torsion can be provided, to promote static vehicle; And behind the vehicle launch, interchangeable to the 2nd kind of situation, be called second gear, have preferable turning performance and accelerating ability only by f-w-d this moment, the most suitable curv road travels; As desire to reach when running at high speed, change to the 3rd kind of situation, be called third gear, because of only by back-wheel drive, so have good linear driving performance, the special straight-line travelling that is fit to, and this moment, car started already, did not need too big torsion, so provide a kind of high-revolving output as can be known by aforementioned, for highest line is sailed shelves,, can get a kind of quite good speed change system as the highest economic benefit of its use is obtained.

In addition, in the foregoing description, centrifugal clutch can be substituted with the thorn tooth wheel, also have identical functions.But when using the thorn tooth wheel, if motor counter-rotating (as reversing time), then motor power can't reach wheel, can form the idle running phenomenon, therefore, but the essential thorn tooth wheel that uses choice direction, as rotary screw cover commonly used to (as shown in Figure 6).

Claims

1. A variable speed transmission system for electric vehicles or locomotives, which includes a counter-rotating motor with front and rear output shafts, and the front and rear output shafts can output power simultaneously or separately;

It is characterized in that it also includes:

A set of brake locking devices that can optionally stop the rotation of one of the above-mentioned front and rear output shafts;

Clutch devices respectively connected to the front and rear output shafts of the motor;

Gear sets preset with different gear ratios are respectively connected to the front and rear output shafts via the clutch device;

The rotating shafts controlled by the above-mentioned gear sets are respectively connected with the four wheels.

2. The variable speed transmission system according to claim 1, wherein the front and rear output shafts are respectively connected to two groups of front and rear gears with different gear ratios through centrifugal clutches.

3. The variable speed transmission system as claimed in claim 1, characterized in that: said front and rear output shafts are respectively connected to two groups of front and rear gears with different tooth ratios through one-way ratchet gears.