CN202152095U - A rear wheel draw bar type service brake structure of a motor tricycle and an electro-tricycle - Google Patents

Abstract

The utility model relates to a rear wheel draw bar type service brake structure of a motor tricycle and an electro-tricycle. The rear wheel draw bar type service brake structure is a manual brake device and has greater braking force. The rear wheel draw bar type service brake structure comprises two levers disposed on two rear wheel braking base plates respectively, a lever under feet of a driver and a middle level disposed among the three levers; a resisting arm of the lever under the feet of the driver is connected with a power arm of the middle arm through a draw bar; and two resisting arms on the middle lever are connected with power arms on the levers of the two rear wheel braking base plates through draw bars respectively. The rear wheel draw bar type service brake structure achieves the objective of improving the braking force by elongating the power arms of any one or more than one lever of the four levers.

Description

The back wheel pull-rod type service brake structure of motor-tricycle and electro-tricycle

Technical field

The utility model relates to motor-tricycle and electro-tricycle, particularly the trailing wheel manpower rod-pulling type brake structure of motor-tricycle and electro-tricycle.

Motor-tricycle refers to the various motor-tricycles that motor cycle engine is installed.Wherein, comprise a kind of motor cycle engine that is equipped with, but the car body lighter weight, on transport administration, belonging to the motor-tricycle (for example: disabled person's motor-tricycle, the elderly's motor-tricycle etc.) of unpowered vehicle.

Background technology

For a long time; China arranges about 310,000 because of the dead and wounded number that traffic accident caused and wander every year, and in rising trend, and the traffic accident that relates to three-wheeled vehicle has accounted for certain proportion again; The especially big traffic accident that relates to three-wheeled vehicle that has in accident with regard to more than dead tens people; This is not high except driveship, violating the regulations overcrowding beyond, the brake failure of three-wheeled vehicle also is a major reason.Therefore, spreading widely in public centres in short: " brake of three-wheeled vehicle is not all right ".

For this reason, one of let us is done a service brake experiment.Experimental article is: the rod-pulling type motor-tricycle [fully with the muscle strength of chaufeur as only braking energy source, increase the brake equipment of braking force through the principle of lever force-saving, we are called the rod-pulling type brake equipment to it.Take the motor-tricycle of rod-pulling type service brake device, we are called the rod-pulling type motor-tricycle to it, and (most motor-tricycles adopts the rod-pulling type brake equipment.It is reported nearly 400～5,000,000 of the year volume of production and marketing of China's rod-pulling type motor-tricycle.Whole electro-tricycles is taked the rod-pulling type brake equipment.)]; Experiment purpose is: the service brake effect of check rod-pulling type motor-tricycle.When this vehicle empty wagons moving velocity per hour is approximately 30 kilometers, step on brake pedal fiercely, vehicle stops in the place ahead that is approximately 6～8 meters, and the braking mark between wheel and the ground is obvious; The approval weight of indicating on the label of this rod-pulling type motor-tricycle is 200 kilograms, when landing two individual weights respectively be about 75 kilograms hold the visitor after, i.e. after 150 kilograms of the load-carryings; When the speed of a motor vehicle per hour is approximately 30 kilometers; Stepping on brake pedal fiercely, stops in the about forwardly 20 meters position of this vehicle, gets off and observes when rubbing the braking mark that is produced between wheel and the ground; But at all can not find braking mark, promptly wheel is not by locking.The above-mentioned service brake experiment of reforming repeatedly of the rod-pulling type motor-tricycle of using other various brands instead, the result is all roughly the same.

Experimental result: during the service brake of (1) rod-pulling type motor-tricycle empty wagons, braking effect is good basically, can braking mark be arranged to the rear wheel locking; (2) after the load-carrying of rod-pulling type motor-tricycle during service brake, the obvious variation of braking effect, embracing that the rear wheel degree is different is not dead, does not have braking mark; (3) rear wheel service brake weak effect is the universal phenomenon of rod-pulling type motor-tricycle after the load-carrying.

(above-mentioned experiment shows: service brake was not tested after people had done load-carrying; Only be when the empty wagons service brake is tested, braking mark is arranged, just think that braking is qualified by mistake; People do not reckon with after the load-carrying that braking effect can variation, the not situation of dead wheel can take place to embrace after not reckoning with load-carrying).

Since the early 1990s in last century; A large amount of motor-tricycles is developed by two-wheeled motor vehicle, the sixth of the twelve Earthly Branches the history of recent two decades has been arranged so far, and it is increasing that the development of three-wheeled vehicle is car body; The car body quality is increasing; The situation that manufacturing scale is increasing, however brake equipment is still almost completely indiscriminately imitated the rod-pulling type brake equipment of two-wheeled motor vehicle then so far; Car body quality and braking force are seriously incompatible, and the car body quality that increases day by day displays with the hypodynamic contradiction of braking more and more highlightedly.

[total weight of the rod-pulling type motor-tricycle that find the sixth of the twelve Earthly Branches has reached 800 kilograms (weight that indicate on the label).For example: the model of Mount Everest great river, Chongqing motor-tricycle Co., Ltd in August, 2009 production is: the motor-tricycle of DJ150ZH-2: conducting oneself with dignity is: 300 kilograms; Load carrying ability is: 500 kilograms; In addition, the motor-tricycle of the model ZS150ZH-2D that Jiangsu Zongshen Motor Tricycle Manufacture Co., Ltd. produces in September, 2009, the total weight that indicates on the label is 660 kilograms, wherein deadweight: 360 kilograms, load-carrying: 300 kilograms].

How to improve the service brake effect of three-wheeled vehicle? Every vehicle braked problem that relates to all be unable to do without the lever problem, and especially most three-wheeled vehicles be unable to do without the lever problem especially.

The action of the force to rotate around a fixed point called hard rod lever, for example: crowbar Bing other hand pump.Lever can be straight, also can bend, and " strong " is not necessarily rod, the general reference certain-length is arranged but under the effect of external force indeformable object.

Lever has " five elements ":

(1) fulcrum: lever is called fulcrum around the attachment point that rotates.When lever rotated, fulcrum was relatively-stationary.

(2) power: the power that lever is rotated is called power.

(3) resistance: hinder the power that lever rotates, be called resistance.

(4) power arm: the vertical distance from fulcrum to the dynamic action line is called power arm.

(5) resistance arm: the vertical distance from fulcrum to the drag effect line is called resistance arm.

Fig. 1 is the back wheel pull-rod type service brake schematic representation of apparatus of motor-tricycle of the prior art.It comprises four levers: be positioned at each lever on two trailing wheel back-plates, sometimes, we also are called trailing wheel swing arm lever to it, are called for short the swing arm regulations and parameters, and this swing arm lever is made up of swing arm 5 and camshaft 6; Be positioned near (hereinafter to be referred as the chaufeur underfooting) lever the chaufeur right crus of diaphragm, sometimes, we also are called foot pedal lever to it, and this foot pedal lever constitutes by stepping on arm 1, treadle 2, axle 11 and pedal 10; Also have a middle lever between three levers recited above, sometimes, we also are called rocker lever to it, and this rocker lever is made up of rocking arm 3, rocking bar 4 and axle 11; Be connected with pull bar 20 between the power arm (rocking arm 3) of the resistance arm of the lever of chaufeur underfooting (treadle 2) and middle lever, two resistance arms (rocking bar 4) on the middle lever respectively with two trailing wheel back-plates on the power arm (swing arm 5) of lever be connected with pull bar 22 with pull bar 21.(trailing wheel back-plate not shown in the figures, only illustrate be positioned at the brake shoe brake cheek of pulling at the bottom of this braking 30)

[for the convenience of narrating, sometimes, we also can be called first lever to the lever that is positioned at the chaufeur underfooting (foot pedal lever); Be called second lever to middle lever (rocker lever); Be called the back turbine/lever being positioned at lever (swing arm lever) abbreviation of pulling at the trailing wheel braking end].

Motor-tricycle is developed by two-wheeled motor vehicle, and the back wheel pull-rod type brake equipment of motor-tricycle is formed by the back wheel pull-rod type brake equipment transformation of two-wheeled motor vehicle.We compare the back wheel pull-rod type brake equipment of motor-tricycle with the back wheel pull-rod type brake equipment of two-wheeled motor vehicle: the lever of finding their chaufeur underfooting almost is identical (comparing the lever of their chaufeur underfooting and back turbine/lever with the back turbine/lever; The proportionate relationship of its shape, size and power arm and resistance arm; All almost completely identical), their difference only is a lever in the middle of in the back wheel pull-rod type brake equipment of motor-tricycle, having had more.

Cause wheel to embrace not dead reason and just be middle lever.

For a long time; Domestic more than 200 families make the motor-tricycle and the electro-tricycle of the enterprise production of three-wheeled vehicle; The structure of nearly all middle lever is in full accord; That is: two resistance arms (rocking bar 4) on the middle lever equate, and equate with power arm (rocking bar 3) on the middle lever [in the motor-tricycle field, at home more than 200 in the enterprise of tame manufacturing motor-tricycle; The power arm of middle lever of only finding the motor-tricycle of several families enterprise production that list the back is slightly larger than resistance arm; Only find a producer (the Feitian five-pointed star board motor-tricycle that the fertile international heavy industry of Feitian, Zhucheng, Shandong Province thunder joint-stock company produces) in September, 2009, afterwards, found several producers (the big fortune in Luoyang, north are prone to big sun, Luoyang Mount Everest etc.) again in succession; In the electro-tricycle field, the middle lever of whole electro-tricycles all takes two resistance arms (rocking bar 4) to equate, and the structure that equates with power arm (rocking arm 3) on the middle lever].

In Fig. 1, if represent the pulling force of pull bar 20 with F;

The pulling force of representing pull bar 21 with M;

The pulling force of representing pull bar 22 with N;

The power arm of representing middle lever with R;

The resistance arm of representing middle lever with r;

(power of middle lever is exactly the pulling force of pull bar 20; The resistance of middle lever is exactly the pulling force of pull bar 21 and the pulling force of pull bar 22);

According to lever principle: lever when balance, kinetic moment=resisting moment

That is: power * power arm=resistance * resistance arm

Specific to lever: F * R=M in the middle of above-mentioned * r+N * r

That is: F * R=r (M+N)

Because: R=r

So: F=M+N

Because two resisting moments are equal, that is: M * r=N * r

So: M=N

Can find out from top analysis: when two resistance arms of middle lever equate, and when equating with the power arm of middle lever, pull bar 21 equates with the pulling force of pull bar 22, and the pulling force of the pulling force of pull bar 21 and pull bar 22 equals half of pulling force of pull bar 20 respectively,

That is: $M=\frac{1}{2}F$ $N=\frac{1}{2}F$

Can find out from following formula: the pulling force of pull bar 21 equals pulling force half the of pull bar 20, and the pulling force of pull bar 22 also equals pulling force half the of pull bar 20.That is to say that in braking procedure, pulling force is through behind the middle lever, the size of pulling force will reduce half, and [strictly speaking, moment has reduced half the.When two resistance arms of middle lever equate, and when equating with power arm, pulling force has reduced half.In addition, above-mentioned conclusion also can be confirmed through experiment.Experimental technique is: three pull bars (pull bar 20, pull bar 21 and pull bar 22) are blocked from middle position; Connect a spring balance in each truncated position; Three pull bars connect three spring balances altogether; Step on when pulling the application force that varies in size on 10 when we are applied to, read the numerical value of three spring balances respectively, consequently: the pulling force of pull bar 21 equates with the pulling force of pull bar 22 all the time; And the pulling force of pull bar 21 equals pulling force half the of pull bar 20 all the time; The pulling force of pull bar 22 also equals pulling force half the of pull bar 20 all the time.For example: when the reading of the spring balance on the pull bar 20 was 10 kilograms, the reading of the spring balance on the pull bar 21 was 5 kilograms, and the reading of the spring balance on the pull bar 22 also is 5 kilograms; When the reading of the spring balance on the pull bar 20 was 30 kilograms, the reading of the spring balance on the pull bar 21 was 15 kilograms, and the reading of the spring balance on the pull bar 22 also is 15 kilograms; When the reading of the spring balance on the pull bar 20 was 60 kilograms, the reading of the spring balance on the pull bar 21 was 30 kilograms, and the reading of the spring balance on the pull bar 22 also is 30 kilograms etc.].

For a long time; Almost completely identical with the lever of the chaufeur underfooting of two-wheeled motor vehicle from the lever of the chaufeur underfooting of motor-tricycle with back turbine/lever with the back turbine/lever; People do not identify two resistance arms are set on middle lever; Pulling force is through behind the middle lever; Can cause pulling force to reduce half the result, thereby not identify the result that can cause the braking force drop by half, and then not recognize that the back wheel pull-rod type brake equipment of motor-tricycle exists the short shortcoming of power arm of lever.

[in recent years; Found that in succession the power arm of middle lever of the motor-tricycle of described several manufacturer production is slightly larger than the situation of resistance arm; But meanwhile, the power arm of first lever of this motor-tricycle of described several manufacturer production has dwindled again widely; The length of the power arm of first lever of these several producers has been reduced to 200 millimeter (for a long time; The length of the power arm of the foot pedal lever of motor-tricycle is almost completely identical with the length of the power arm of the foot pedal lever of two-wheeled motor vehicle, approximately all in 260～280 millimeter or up and down, can regard as roughly approximately and reduce to about 200 from 260～280 millimeter); Like this; The power arm of lever is slightly larger than resistance arm outwardly, but the not increase in fact of the braking force of whole back wheel pull-rod type brake equipment, its purpose is not to two results that resistance arm produced on the middle lever; This has shown that described several producer does not identify pulling force equally through behind the middle lever, and pulling force will reduce half the.(amplitude that increases from the power arm of middle lever and the simultaneously a large amount of reduction of power arm of foot pedal lever, described several producers do not identify pulling force through behind the middle lever, and pulling force will reduce half the.On the contrary; If the power arm of pulling lever of stepping on of motor-tricycle remains unchanged; Promptly still remain on the length of 260～280 millimeter roughly; And the length of the power arm on the middle lever equals the length sum of two resistance arms on this centre lever, can think that then people have recognized pulling force through behind the middle lever, and pulling force will reduce half the.Because have only when the length of the power arm on the middle lever equals the length of the resistance arm on this centre lever of two-fold, just can make pulling force pass through in the middle of behind the lever, remain unchanged.For example: lever is provided with a power arm and two resistance arms in the middle of certain; The maxim of power arm is 200 millimeters; The maxim of one of them resistance arm is 100 millimeters, and the maxim of another resistance arm also is 100 millimeters, so; Pulling force is through behind this centre lever, and the size of its pulling force remains unchanged)].

Can find out from top branch folding and experiment: existing motor-tricycle is with respect to two-wheeled motor vehicle; The car body quality of motor-tricycle has increased; But braking force has descended half the on the contrary, is approximately

of the braking force of two-wheeled motor vehicle

People both do not find, do not expect yet pulling force pass through in the middle of behind the lever, can change stealthily.People always habitually think to prejudice: the effect of middle lever only is the point of action that is used for changing power, does not change the size of power; And objective fact is: middle lever has not only changed the point of action of power, and variation has also taken place the size of power stealthily.

So the motor-tricycle braking effect is poor, wheel is embraced not dead basic reason and is two resistance arms on the middle lever.

[specific to above-mentioned four levers, fulcrum is meant the center-point of the axle 11 of lever, i.e. axle center; Power and drag effect line are meant the bar heart line (cross-sectional plane of pull bar has a geometric center point, and the center-point of numerous cross-sectional plane couples together formed line, and we are called bar heart line to it) of pull bar; Power arm and resistance arm be meant axial line from lever (line of numerous AnchorPoint and the extended line of this line, we are called axial line to it, below all like this) to the vertical distance between the bar heart line of pull bar].

In Fig. 1, the resistance arm (rocking bar 4) of resistance arm of first lever (treadle 2) and middle lever is high-visible, play the lever on the trailing wheel back-plate the resistance arm effect be camshaft 6.

Fig. 2 shows the scheme drawing of the amplification of camshaft 6.Existing rod-pulling type brake equipment all adopts camshaft as shown in Figure 26 basically.Can find out that from figure camshaft 6 is in the process of axle center O point rotation, the B point contacts with brake shoe brake cheek 30, produces squeese pressure, thereby plays brake action.So the length of OB line segment can be regarded resistance arm as.The length of OB line segment is relevant with the geometric configuration of camshaft 6, because the existing camshaft that plays the resistance arm effect 6 all adopts shape as shown in Figure 2, and size is that unified (its longitudinal length L is 27 millimeters basically; Its thickness M is 12.5 millimeters), so its OB line segment can be regarded unmodified as, that is to say, the resistance arm of the lever on the existing trailing wheel back-plate can be regarded as a constant.Through measuring the OB line segment is 13 millimeters, and the resistance arm of the lever on the promptly existing trailing wheel back-plate is 13 millimeters.

Two inherent characteristics that the braking force that resistance arm produced reduces by half in the middle of the basic reason of the braking effect difference of motor-tricycle is on the lever.That is to say, this structure intrinsic characteristic that the braking force magnification factor of trailing wheel has been reduced is half the.

So-called braking force magnification factor; In fact be exactly that (described theory refers to this brake equipment and is under the perfect condition in theory; Promptly in braking procedure, the axle in this brake equipment with spool between the friction force and the waste of power that are produced ignore) with the resistance of the lever on two trailing wheel back-plates respectively divided by two merchants of the power gained of the lever of chaufeur underfooting.

(other braking force magnification factor of branch that in fact these two merchants are exactly two trailing wheels, generally speaking, the braking force of two trailing wheels equates, is symmetrical, promptly these two merchants equate.For the convenience of narrating, we can be called for short the braking force magnification factor that is called trailing wheel to one of them merchant among these two merchants.That is to say, when addressing the braking force magnification factor of trailing wheel, all refer to one of them merchant, that is: when every the present invention addresses the braking force magnification factor of trailing wheel, all refer to the braking force magnification factor of a trailing wheel.Rather than refer to the braking force magnification factor sum of two trailing wheels more not be meant other).

For example: the power that chaufeur uses instep to be applied on the pedal of lever of chaufeur underfooting is 65 kilograms; Two resistances perpendicular to resistance arm that camshaft obtained of the lever on the back-plate of two trailing wheels are respectively 1170 kilograms; So; 1170 ÷ 65=18, we can abbreviate as: the braking force magnification factor of trailing wheel is 18 times.(at this moment, generally speaking, the braking force magnification factor of another trailing wheel also should be 18 times)

According to lever principle: power arm * power=resistance arm * resistance (power arm and power are inversely proportional to)

That is: power arm ÷ resistance arm=resistance ÷ power

Can find out from following formula: in fact power arm is exactly the braking force magnification factor of an independent lever divided by the merchant of resistance arm gained.

If represent the power arm of first lever with E; The resistance arm of representing first lever with e;

The power arm of representing middle lever with R; The resistance arm of representing middle lever with r;

The power arm of representing turbine/lever after with C; The resistance arm of representing turbine/lever after with c;

The power of representing first lever with W;

Represent the resistance on the turbine/lever after independent with w;

The magnification factor of representing the braking force of an independent trailing wheel with D;

So, the magnification factor of the braking force of first lever is:

The magnification factor of the braking force of middle lever is:

The magnification factor of the braking force of turbine/lever is after independent one:

Then: the braking force magnification factor of an independent trailing wheel is:

That is: $\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}=D=\frac{w}{W}$

That is to say: the magnification factor of the braking force of an independent trailing wheel equals the amassing of magnification factor of the braking force of each lever.If: the structure of the rod-pulling type brake equipment of certain motor-tricycle is (Fig. 1 can be used as reference) as follows:

The power arm of first lever is 300 millimeters; The resistance arm of first lever is 50 millimeters;

The power arm of middle lever is 80 millimeters; The resistance arm of middle lever is 80 millimeters;

The power arm of back turbine/lever is 78 millimeters; The resistance arm of back turbine/lever is 13 millimeters;

If the application force that chaufeur is applied on the brake pedal of first lever is 65 kilograms (W=65 kilograms)

According to lever principle: power * power arm=resistance * resistance arm

The resistance of first lever: $F=\frac{W\×E}{e}$

(in fact the resistance of first lever is exactly the power of middle lever, simultaneously, also equals the pulling force of pull bar 20).

That is:

The resistance of middle lever:

That is:

(in fact two resistances of middle lever are exactly the power of turbine/lever after distinguishing two, simultaneously, also equal the pulling force of pull bar 21, pull bar 22 respectively);

(can find out from top instantiation: the pulling force of three pull bars is respectively: the pulling force of pull bar 20 is: 390 kilograms; The pulling force of pull bar 21 is: 195 kilograms; The pulling force of pull bar 22 is: 195 kilograms.Here find out again: pulling force is through behind the middle lever, and the size of its pulling force has reduced half the);

The resistance of turbine/lever after independent one: $w=\frac{195\×C}{c}$

That is:

The braking force magnification factor of an independent trailing wheel:

On the other hand, root a tree name formula:

The braking force magnification factor of an independent trailing wheel: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is:

300 ÷ 50=6 doubly

The braking force magnification factor of middle lever is:

80 ÷ (80 * 2)=0.5 times

The braking force magnification factor of turbine/lever is after independent one:

78 ÷ 13=6 doubly

The braking force magnification factor of an independent trailing wheel is: 6 * 0.5 * 6=18 doubly

Above-mentioned two kinds of methods of calculating, it comes to the same thing.

The motor-tricycle of domestic several manufacturer production that the maximum power arm of having selected below to find the sixth of the twelve Earthly Branches is bigger; Listed maximum power arm and the maximum resistance arm of maximum power arm and maximum resistance arm, the foot pedal lever of the swing arm lever in the back wheel pull-rod type brake equipment, the maximum power arm and the maximum resistance arm of middle lever, and the braking force magnification factor of trailing wheel:

(in the prior art, the power arm of the lever on two trailing wheel back-plates all equates; Two resistance arms on the middle lever equate that all promptly the braking force of two trailing wheels equates.For briefly, just list out the numerical value of one of them arm of force in these two arm of forces.For example: when listing certain " the maximum power arm of trailing wheel swing arm lever is 87 millimeters ", the maximum power arm that refers to two trailing wheel swing arm levers equates, and the maximum power arm of one of them trailing wheel swing arm lever is 87 millimeters.Again for example: when listing certain " the maximum resistance arm of middle lever is 70 millimeters ", refer at this and be provided with two resistance arms above lever of centre, and these two resistance arms equate that the numerical value of one of them resistance arm is 70 millimeters).

(power arm of lever can be regulated, and in braking procedure, changes.When swing arm 5, rocking arm 3 are the maximum power arm when vertical each other with pull bar.Usually the maximum power arm also can be called for short and be called power arm).

The model of Mount Everest great river, Chongqing motor bike Co., Ltd in August, 2009 production is: the great river board motor-tricycle of DJ150ZH-2: the maximum power arm of trailing wheel swing arm lever is 70 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; Stepping on the maximum power arm of pulling lever is 230 millimeters; The maximum resistance arm of foot pedal lever is 70 millimeters; The maximum power arm of middle lever is 70 millimeters; The maximum resistance arm of middle lever is 70 millimeters.

According to top formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 230 ÷ 70=3.29 doubly

The braking force magnification factor of middle lever is: 70 ÷ (70 * 2)=0.5 times

The braking force magnification factor of back turbine/lever is: 70 ÷ 13=5.38 doubly

The braking force magnification factor of this trailing wheel is: 3.29 * 0.5 * 5.38=8.8 doubly

[indicating on the label of the DJ150ZH-2 type great river board motor-tricycle of Mount Everest great river, above-mentioned Chongqing motor bike Co., Ltd production and conducting oneself with dignity: 300 kilograms; Load carrying ability: 500 kilograms; Amount to: 800 kilograms.Do rough test through spring balance or force indicator, when emergency braking, the instep of chaufeur acts on braking and steps on the application force of pulling and be approximately about 65 kilograms 65 * 8.8 times=572 kilograms.Like this little braking force magnification factor, chaufeur be at glancing impact,, firmly step on brake pedal in any case, can't with quality the rear lock of 800 kilograms vehicle all, experiment also can confirm.(actual braking force also is less than 572 kilograms, because in braking procedure, between the axle of lever, exists the loss of friction force and energy, in addition, also exists the resistance of the return spring in the device)].

The model that north, Luoyang is prone in May, 2011 production of motor-tricycle Co., Ltd is: the big positive board motor-tricycle of DY150ZH-5: the maximum power arm of trailing wheel swing arm lever is 70 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 180 millimeters; The maximum resistance arm of foot pedal lever is 50 millimeters; The maximum power arm of middle lever is 135 millimeters; The maximum resistance arm of middle lever is 120 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 180 ÷ 50=3.6 doubly

The braking force magnification factor of middle lever is: 135 ÷ (120 * 2)=0.56 times

The braking force magnification factor of back turbine/lever is: 70 ÷ 13=5.38 doubly

The braking force magnification factor of this trailing wheel is: 3.6 * 0.56 * 5.38=10.85 doubly

The model of Luoyang Zhufeng Motorcycles car Co., Ltd in May, 2011 production is: the motor-tricycle of ZF150ZH: the maximum power arm of trailing wheel swing arm lever is 70 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 195 millimeters; The maximum resistance arm of foot pedal lever is 59 millimeters; The maximum power arm of middle lever is 125 millimeters; The maximum resistance arm of middle lever is 95 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 195 ÷ 59=3.31 doubly

The braking force magnification factor of middle lever is: 125 ÷ (95 * 2)=0.66 times

The braking force magnification factor of back turbine/lever is: 70 ÷ 13=5.38 doubly

The braking force magnification factor of this trailing wheel is: 3.31 * 0.66 * 5.38=11.75 doubly

The general board motor-tricycle of silver-colored steel enlightening that Chongqing Silver Steel Technology (group) Co., Ltd was produced about 2009 greatly: the maximum power arm of trailing wheel swing arm lever is 65 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is: 275 millimeters; The maximum resistance arm of foot pedal lever is: 72 millimeters; The maximum power arm of middle lever is 125 millimeters; The maximum resistance arm of middle lever is 100 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 275 ÷ 72=3.82 doubly

The braking force magnification factor of middle lever is: 125 ÷ (100 * 2)=0.625 times

The braking force magnification factor of back turbine/lever is: 65 ÷ 13=5 doubly

The braking force magnification factor of this trailing wheel is: 3.82 * 0.625 * 5=11.95 doubly

The model of great river, Chongqing motor bike Co., Ltd in August, 2006 production is the motor-tricycle of DJ150ZH: the maximum power arm of trailing wheel swing arm lever is 75 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 370 millimeters; The maximum resistance arm of foot pedal lever is 85 millimeters; The maximum power arm of middle lever is 70 millimeters; The maximum resistance arm of middle lever is 70 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 370 ÷ 85=4.35 doubly

The braking force magnification factor of middle lever is: 70 ÷ (70 * 2)=0.5 times

The braking force magnification factor of back turbine/lever is: 75 ÷ 13=5.77 doubly

The braking force magnification factor of this trailing wheel is: 4.35 * 0.5 * 5.77=12.55 doubly

(this great river, Chongqing board motor-tricycle is the platform used car, and the power arm of the foot pedal lever of this car is in long-term firmly braking procedure, and some distortion that is to say, this car when dispatching from the factory, 370 millimeters of the maximum power arm out of reachs of foot pedal lever.But,, still be used as existing branch art to 370 millimeters in order to guarantee the absolute novelty of the utility model).

The model that Longxin strength grand motor-tricycle Co., Ltd in Shandong is produced in September, 2008 is: the strength of JL150ZH is swelled the board motor-tricycle: the maximum power arm of trailing wheel swing arm lever is 80 millimeters; The maximum resistance arm of trailing wheel swing arm lever is: 13 millimeters; The maximum power arm of foot pedal lever is 290 millimeters; The maximum resistance arm of foot pedal lever is 65 millimeters; The maximum power arm of middle lever is 80 millimeters; The maximum resistance arm of middle lever is 80 millimeters;

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 290 ÷ 65=4.46 doubly

The braking force magnification factor of middle lever is: 80 ÷ (80 * 2)=0.5 times

The braking force magnification factor of back turbine/lever is: 80 ÷ 13=6.15 doubly

The braking force magnification factor of this trailing wheel is: 4.46 * 0.5 * 6.15=13.71 doubly

The model of Luoyang big fortune motor-tricycle Co., Ltd in May, 2011 production is: the motor-tricycle of DY150ZH-2: the maximum power arm of trailing wheel swing arm lever is 70 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 200 millimeters; The maximum resistance arm of foot pedal lever is 50 millimeters; The maximum power arm of middle lever is 100 millimeters; The maximum resistance arm of middle lever is 75 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 200 ÷ 50=4 doubly

The braking force magnification factor of middle lever is: 100 ÷ (75 * 2)=0.67 times

The braking force magnification factor of back turbine/lever is: 70 ÷ 13=5.38 doubly

The braking force magnification factor of this trailing wheel is 4 * 0.67 * 5.38=14.42 times

The model that Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd produces in May, 2011 is: the Feitian five-pointed star motor tricycle of FT150ZH-5: the maximum power arm of trailing wheel swing arm lever is 70 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 190 millimeters; The maximum resistance arm of foot pedal lever is 50 millimeters; The maximum power arm of middle lever is 150 millimeters; The maximum resistance arm of middle lever is 100 millimeters;

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 190 ÷ 50=3.8 doubly

The braking force magnification factor of middle lever is: 150 ÷ (100 * 2)=0.75 times

The braking force magnification factor of back turbine/lever is: 70 ÷ 13=5.38 doubly

The braking force magnification factor of this trailing wheel is: 3.8 * 0.75 * 5.38=15.33 doubly

The model of guyot, Henan Longxin motor bike Co., Ltd in February, 2010 production is: the motor-tricycle of LX150ZH-4: the maximum power arm of trailing wheel swing arm lever is 87 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 330 millimeters; The maximum resistance arm of foot pedal lever is 60 millimeters; The maximum power arm of middle lever is 55 millimeters; The maximum resistance arm of middle lever is 65 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 330 ÷ 60=5.5 doubly

The braking force magnification factor of middle lever is: 55 ÷ (65 * 2)=0.42 times

The braking force magnification factor of back turbine/lever is: 87 ÷ 13=6.69 doubly

The braking force magnification factor of this trailing wheel is: 5.5 * 0.42 * 6.69=15.45 doubly

The model of ancestor Shen, Jiangsu motor bike Co., Ltd in September, 2009 production is: the motor-tricycle of ZS150ZH-2D: the maximum power arm of trailing wheel swing arm lever is 73 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; The maximum power arm of foot pedal lever is 285 millimeters; The maximum resistance arm of foot pedal lever is 65 millimeters; The maximum power arm of middle lever is 100 millimeters; The maximum resistance arm of middle lever is 73 millimeters.

According to formula $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 285 ÷ 65=4.38 doubly

The braking force magnification factor of middle lever is: 100 ÷ (73 * 2)=0.68 times

The braking force magnification factor of back turbine/lever is: 73 ÷ 13=5.62 doubly

The braking force magnification factor of this trailing wheel is: 4.38 * 0.68 * 5.62=16.74 doubly

(indicating on the label of the ZS150-2D type motor-tricycle of ancestor Shen, above-mentioned Jiangsu motor bike Co., Ltd production and conducting oneself with dignity: 360 kilograms; Load carrying ability: 300 kilograms).

The model that Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd produces in August, 2009 is: the Feitian five-pointed star motor tricycle of FT150ZH-5: the maximum power arm of trailing wheel swing arm lever is 75 millimeters; The maximum resistance arm of trailing wheel swing arm lever is 13 millimeters; Stepping on the maximum power arm of pulling lever is 210 millimeters; The maximum resistance arm of foot pedal lever is 43 millimeters; The maximum power arm of middle lever is 150 millimeters; The maximum resistance arm of middle lever is 100 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 210 ÷ 43=4.88 doubly

The braking force magnification factor of middle lever is: 150 ÷ (100 * 2)=0.75 times

The braking force magnification factor of back turbine/lever is: 75 ÷ 13=5.77 doubly

The braking force magnification factor of this trailing wheel is: 4.88 * 0.75 * 5.77=21.12 doubly

(in the data procedures of measuring above-mentioned prior art, for the error that prevents to measure, in order to guarantee the absolute novelty of the utility model, the application gives way per capita to some extent.That is to say, when measuring power arm, above the data put down in writing write down 1～2 millimeter as much as possible than the data of reality, even more; When measuring resistance arm, above the data put down in writing lack than the data of reality as far as possible and write down 1～2 millimeter, even more).

(every maximum power arm of addressing trailing wheel swing arm lever all is meant when swing arm 5 and pull bar 21 or pull bar 22 are vertical each other, from the axial line of camshaft 6 to the vertical distance the bar heart line of pull bar 21 or pull bar 22; Every maximum power arm of addressing foot pedal lever all is meant the straight-line distance from axle 11 the axial line of foot pedal lever to the geometric center point of pedal 10 plate faces; The maximum power arm of lever in the middle of every the addressing all is meant when rocking arm 3 and pull bar 20 are mutual vertical, from spools 11 axial line of middle lever to the vertical distance the bar heart line of pull bar 20; The maximum resistance arm of lever in the middle of every the addressing all is meant when rocking bar 4 and pull bar 21 or pull bar 22 are mutual vertical, from spools 11 axial line of middle lever to the vertical distance the bar heart line of pull bar 21 or pull bar 22).

Can find out from the braking force magnification factor of the trailing wheel of top each producer: the model that Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd produces in August, 2009 is: the rear-wheel braking force magnification factor of the Feitian five-pointed star motor tricycle of FT150ZH-5 is the maxim finding the sixth of the twelve Earthly Branches, and its magnification factor is: 21.12 times.If promptly chaufeur applies 65 kilograms power stepping on the pedal of pulling lever (first lever); So; On the camshaft of trailing wheel swing arm lever (back turbine/lever), can obtain an application force perpendicular to the resistance arm direction, the numerical value of this application force is 1372.8 kilograms power.The braking force magnification factor of not finding trailing wheel is greater than 21.12 times motor-tricycle.

[because the model that Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd produces in August, 2009 is: the magnification factor of the rod-pulling type brake equipment of the Feitian five-pointed star board motor tricycle of FT150ZH-5 is the maxim in finding the sixth of the twelve Earthly Branches; Be immediate prior art; So; Be necessary the power arm and the resistance arm of the regulations and parameters (foot pedal lever) of its chaufeur underfooting are remake explanation further:, make the power arm of every vehicle not exclusively equate with the resistance arm ratio owing in (welding) process of production, exist small error.Once the power arm and the resistance arm ratio (is unit with the millimeter) of lever of finding the chaufeur underfooting of the described motor tricycle that this factory produces has: 185 to 52; 185 to 50; 190 to 50; 190 to 48; Multiple ratios such as 200 to 50; The quantity that the discovery ratio is

in a large amount of individual characteies at most, the most common, this ratio of deducibility

should be the technical scheme that foot pedal lever is taked; The maximum ratio of magnification factor is (comprising error):

is in order to guarantee the absolute novelty of the utility model; Ratio in the magnification factor maximum: on the basis of

; Power arm is abdicated 10 millimeters again; Resistance arm is abdicated 7 millimeters again, i.e. the present invention regards ratio

as the prior art of foot pedal lever].

The structure of the back wheel pull-rod type brake equipment of electro-tricycle is almost completely identical with the structure of the back wheel pull-rod type brake equipment of foregoing motor-tricycle; Be after pulling force passes through middle lever equally; The size of its pulling force has reduced half, and [electro-tricycle is compared with motor-tricycle, almost only is the difference of dynamic traction device.In addition, the camshaft (camshaft 6 that roughly is equivalent to the back turbine/lever of motor-tricycle) after being arranged on the turbine/lever is with respect to motor-tricycle, and is big slightly, and through measuring, the resistance arm of this back turbine/lever is 15 millimeters.In addition; All the middle lever of electro-tricycle all takes two resistance arms to equate, and the structure that equates with the power arm of this centre lever, that is to say: pulling force is through behind the middle lever; The size of pulling force will reduce half the; The braking force magnification factor of lever is 0.5 promptly], that is to say that the braking force magnification factor of trailing wheel is less.

The electro-tricycle of the domestic several families enterprise production that the rear-wheel braking force magnification factor of having selected below to find the sixth of the twelve Earthly Branches is bigger.

The peace rifle dragon board electro-tricycle that Anyang, Henan Province produces, the date manufactured: in September, 2010, model: AQ-1; The power arm of first lever is 420 millimeters; The resistance arm of first lever is 105 millimeters; The power arm of middle lever is 70 millimeters; The resistance arm of middle lever is 70 millimeters; The power arm of back turbine/lever is 80 millimeters; The resistance arm of back turbine/lever is 15 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 420 ÷ 105=4 doubly

The braking force magnification factor of middle lever is: 70 ÷ (70 * 2)=0.5 times

The braking force magnification factor of back turbine/lever is: 80 ÷ 15=5.33 doubly

The braking force magnification factor of this trailing wheel is: 4 * 0.5 * 5.33=10.66 doubly

The model that Anyang, Henan Province gold mechanical Manufacturing Co., Ltd of wheel produces in November, 2009 is: 1600 * 1100 handsome rosy clouds board electro-tricycle: the power arm of first lever is 415 millimeters; The resistance arm of first lever is 93 millimeters; The power arm of middle lever is 68 millimeters; 68 millimeters of the resistance arms of middle lever; The power arm of back turbine/lever is 78 millimeters; The resistance arm of back turbine/lever is 15 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 415 ÷ 93=4.46 doubly

The braking force magnification factor of middle lever is: 68 ÷ (68 * 2)=0.5 times

The braking force magnification factor of back turbine/lever is: 78 ÷ 15=5.2 doubly

The braking force magnification factor of this trailing wheel is: 4.46 * 0.5 * 5.2=11.6 doubly

Zhao of Handan City, Hebei province trump electro-tricycle (in May, 2011 production): the power arm of first lever is 440 millimeters; The resistance arm of first lever is 90 millimeters; The power arm of middle lever is 70 millimeters; The resistance arm of middle lever is 70 millimeters; The power arm of back turbine/lever is 80 millimeters; The resistance arm of back turbine/lever is 15 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 440 ÷ 90=4.89 doubly

The braking force times magnification of middle lever is: 70 ÷ (70 * 2)=0.5 times

The braking force times magnification of back turbine/lever is: 80 ÷ 15=5.33 doubly

The braking force magnification factor of this trailing wheel is: 4.89 * 0.5 * 5.33 times=13.03 times

The board electro-tricycle is robbed in the match of Anyang, Henan Province: the power arm of first lever is 400 millimeters; The resistance arm of first lever is 80 millimeters; The power arm of middle lever is 70 millimeters; The resistance arm of middle lever is 70 millimeters: the power arm of back turbine/lever is 80 millimeters; Back turbine/lever resistance arm is 15 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of first lever is: 400 ÷ 80=5 doubly

The braking force magnification factor of middle lever is: 70 ÷ (70 * 2)=0.5 times

The braking force magnification factor of back turbine/lever is: 80 ÷ 15=5.33 doubly

The braking force magnification factor of this trailing wheel is: 5 * 0.5 * 5.33=13.33 doubly

Zhao of Handan City, Hebei province trump electro-tricycle (in September, 2010 production and selling): the power arm of first lever is 400 millimeters; The resistance arm of first lever is 75 millimeters; The power arm of middle lever is 75 millimeters; The resistance arm of middle lever is 75 millimeters; The power arm of back turbine/lever is 80 millimeters; The resistance arm of back turbine/lever is 15 millimeters.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

The magnification factor of first lever: 400 ÷ 75=5.33 doubly

The magnification factor of middle lever: 75 ÷ (75 * 2)=0.5 times

The magnification factor of back turbine/lever: 80 ÷ 15=5.33 doubly

The braking force magnification factor of this trailing wheel: 5.33 * 0.5 * 5.33=14.2 doubly

Can find out that from top data the rear-wheel braking force magnification factor of Handan Zhao's trump electro-tricycle (in September, 2010 production) is the maxim in finding the sixth of the twelve Earthly Branches, its numerical value is: 14.2 times.Do not find that magnification factor is greater than 14.2 times electro-tricycle.

At present; Checked the selling market of more domestic main rod-pulling type motor-tricycles; The trailing wheel brake equipment of this rod-pulling type motor-tricycle is all taked four levers, i.e. lever in the middle of foot pedal lever of each the swing arm lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one.Between trailing wheel swing arm lever and foot pedal lever, do not find second lever and plural lever.

Equally, the back wheel pull-rod type brake equipment of electro-tricycle is also all taked four above-mentioned levers, does not find the 5th lever, does not also find the lever more than five.

The utility model content

First technical matters that will solve of the utility model provides the back wheel pull-rod type service brake structure of the bigger motor-tricycle of several kinds of braking forces.

Another technical matters that will solve of the utility model provides the back wheel pull-rod type service brake structure of the bigger electro-tricycle of several kinds of braking forces.

For solving above-mentioned first technical matters; First technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 22.2 or in that (another merchant also equals 22.2 or between 22.2～23.7 between 22.2～23.7.For briefly, when two merchants equate, needn't repeat another merchant, down with), the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 22.2 or between 22.2～23.7 divided by the merchant of the power gained of the lever of chaufeur underfooting.

(of in front, the theory described in the scheme refers to this brake equipment and is under the perfect condition, and promptly friction force and the waste of power in this brake equipment ignored, down together).

For solving above-mentioned first art problem; Second technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 23.7 or between 23.7～25.2, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 23.7 or between 23.7～25.2 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned first technical matters; The 3rd technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 25.2 or between 25.2～27, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 25.2 or between 25.2～27 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned first technical matters; The 4th technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 27 or between 27～28.8, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 27 or between 27～28.8 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned first technical matters; The 5th technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever of pulling at two trailing wheels braking ends, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, the power arm of the lever that two resistance arms on the middle lever are pulled with two trailing wheels braking ends respectively is connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 28.8 or between 28.8～32, and the resistance that perhaps in theory only makes the lever that any trailing wheel braking end pulls equals 28.8 or between 28.8～32 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned first technical matters; The 6th technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever of pulling at two trailing wheels braking ends, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the phase arm of force of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 32 or between 32～45, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 32 or between 32～45 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned first technical matters; The 7th technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of motor-tricycle; It mainly is made up of lever in the middle of lever of each lever of pulling at two trailing wheels braking ends, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates that divided by two merchants of the power gained of the lever of chaufeur underfooting one of them merchant >=45 perhaps in theory only make merchant >=45 of the resistance of the lever on any trailing wheel back-plate divided by the power gained of the lever of chaufeur underfooting respectively.

Above-mentioned seven kinds of schemes can be regarded seven kinds of rod-pulling type brake structures as.

For solving above-mentioned another technical matters; The 8th technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or pull bar between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 15 or between 15～15.9, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 15 or between 15～15.9 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned another technical matters; The 9th technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 15.9 or between 15.9～16.8, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 15.9 or between 15.9～16.8 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned another technical matters; The tenth technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 16.8 or between 16.8～18, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 16.8 or between 16.8～18 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned another technical matters; The 11 technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It is mainly by each lever that is positioned on two trailing wheel back-plates; Lever is formed in the middle of lever of chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 18 or between 18～19.2, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 18 or between 18～19.2 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned another technical matters; The 12 technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It is mainly by each lever that is positioned on two trailing wheel back-plates; Lever is formed in the middle of lever of chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes the lever that two trailing wheels braking ends pull in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 19.2 or between 19.2～22, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 19.2 or between 19.2～22 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned another technical matters; The 13 technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms on the middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again, perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned, the resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant equals 22 or between 22～32, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 22 or between 22～32 divided by the merchant of the power gained of the lever of chaufeur underfooting.

For solving above-mentioned another technical matters; The 14 technical scheme of the utility model is: a kind of back wheel pull-rod type service brake structure of electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever, the power arm of the lever that two resistance arms on the middle lever are pulled with two trailing wheels braking ends respectively is connected with pull bar or backguy; Through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates that divided by two merchants of the power gained of the lever of chaufeur underfooting one of them merchant >=32 perhaps in theory only make merchant >=32 of the resistance of the lever on any trailing wheel back-plate divided by the power gained of the lever of chaufeur underfooting respectively.

The rod-pulling type motor-tricycle has increased braking force after taking to increase the scheme of braking force magnification factor of whole trailing wheel brake equipment.During service brake, can rear lock have been shortened braking distance after the load-carrying, improve braking effect; And magnification factor is big more, and braking force is just big more.

Equally, electro-tricycle has increased braking force after taking to increase the scheme of braking force magnification factor of whole trailing wheel brake equipment, has improved the service brake effect.

The power arm that is positioned at the lever on the trailing wheel back-plate is parts, if motor-tricycle takes to increase the scheme of these parts, so, according to rough estimation, 3.51 millimeters of every growths can increase about 65 kilograms braking force more.

After taking to increase the scheme of braking force magnification factor of whole back wheel pull-rod type brake equipment, kept the simple in structure of rod-pulling type brake equipment, low cost of manufacture, fault is few, and long-lived advantage has overcome the hypodynamic shortcoming of braking of manual braking's device.

Description of drawings

Below in conjunction with accompanying drawing (except Fig. 1 and Fig. 2; Each accompanying drawing is the scheme drawing of simplification) specific embodiment of the utility model is done further explain.

Fig. 1 is the back wheel pull-rod type service brake schematic representation of apparatus of motor-tricycle of the prior art and electro-tricycle.

Fig. 2 is the scheme drawing that is positioned at the camshaft on the trailing wheel back-plate of motor-tricycle of the prior art.

Fig. 3 is the scheme drawing of first embodiment of the back wheel pull-rod type service brake structure of motor-tricycle.

Fig. 4 is the scheme drawing of second embodiment of the back wheel pull-rod type service brake structure of motor-tricycle.

Fig. 5 is the scheme drawing of the 3rd embodiment of the back wheel pull-rod type service brake structure of motor-tricycle.

Fig. 6 is the scheme drawing of the 4th embodiment of the back wheel pull-rod type service brake structure of motor-tricycle.

Fig. 7 is the scheme drawing of the 5th embodiment of the back wheel pull-rod type service brake structure of motor-tricycle.

The specific embodiment

Fig. 3 shows first embodiment of back wheel pull-rod type service brake structure of the motor-tricycle of the utility model.It comprises four levers: by each the swing arm lever (lever that swing arm 5 and camshaft 6 are formed) that is positioned on two trailing wheel back-plates; A foot pedal lever (stepping on the lever that arm 1 and treadle 2 are formed) and the middle lever (levers of rocking arm 3 and rocking bar 4 compositions) between these three levers that is positioned at the chaufeur underfooting is formed; The resistance arm of the lever of chaufeur underfooting (treadle 2) is connected with pull bar 20 with the power arm (rocking arm 3) of middle lever; Two resistance arms (rocking bar 4) of middle lever respectively with two trailing wheel back-plates on the power arm (swing arm 5) of lever be connected (also can connect, below each embodiment all like this) with pull bar 22 with pull bar 21 with backguy.This embodiment takes to make the braking force magnification factor of two trailing wheels to equal 22.2 times scheme respectively, and the scheme of taking the power arm (swing arm 5) with the lever on two trailing wheel back-plates to increase simultaneously.

Desire increases the length of the power arm (swing arm 5) of the lever of pulling at two trailing wheel braking ends; Make its magnification factor equal 22.2 times respectively; Can establish this power arm is unknown number; With (power arm of the lever that can know and resistance arm numerical value in the formula below the power arm of magnification factor 22.2 and other levers that can know and the substitution of resistance arm numerical value; Be immediate prior art, below each embodiment all be with the model of producing Zhucheng, Shandong Province Futian Leiwo International Heavy Industry Co., Ltd. in August, 2009: the motor-tricycle of FT150ZH-5 is as immediate prior art):

$D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

$22.2=\frac{210}{43}\×\frac{150}{100\×2}\×\frac{C}{13}$

Try to achieve: the C=78.79 millimeter

78.79-75=3.79 millimeter

When about the power arm (swing arm 5) of lever on two trailing wheel back-plates increase by 3.79 millimeters respectively; That is: when about the length of actual power arm (swing arm 5) of lever on two trailing wheel back-plates when being respectively 78.79 millimeters; The braking force magnification factor of two trailing wheels equals 22.2 times respectively; That is to say that the braking force magnification factor that is positioned at the trailing wheel in left side equals 22.2 times, the braking force magnification factor that is positioned at the trailing wheel on right side also equals 22.2 times; That is: the resistance of the lever on the trailing wheel back-plate in left side equals 22.2 divided by the merchant of the power gained of the lever of chaufeur underfooting; The resistance of the lever on the trailing wheel back-plate on right side also equals 22.2 divided by the merchant of the power gained of the lever of chaufeur underfooting.

22.2-21.12=1.08 doubly

This shows: 1.08 times=3.51 millimeters of 3.79 millimeters ÷

That is: the about every increase of power arm (swing arm 5) is 3.51 millimeters, the braking force that can double.

Do rough test with spring balance or force indicator, when emergency braking, the instep of chaufeur acts on braking and steps on the application force of pulling and be approximately about 65 kilograms.The estimation that certificate is rough: 3.51 millimeters of the every growths of the power arm of the lever on the trailing wheel back-plate, the braking force that can double approximately.After taking to increase by 3.79 millimeters scheme, approximately can increase by 70.2 kilograms braking force, at the crux of emergency braking constantly, 70.2 kilograms braking force possibly play crucial effects, probably avoids a traffic accident.

Fig. 4 shows second embodiment of back wheel pull-rod type service brake structure of the motor-tricycle of the utility model.It comprises four levers: by each the swing arm lever (lever that swing arm 5 and camshaft 6 are formed) that is positioned on two trailing wheel back-plates; A foot pedal lever (stepping on the lever that arm 1 and treadle 2 are formed) and the middle lever (levers of rocking arm 3 and rocking bar 4 compositions) between these three levers that is positioned at the chaufeur underfooting is formed; The resistance arm of the lever of chaufeur underfooting (treadle 2) is connected with pull bar 20 with the power arm (rocking arm 3) of middle lever, two resistance arms (rocking bar 4) of middle lever respectively with two trailing wheel back-plates on the power arm (swing arm 5) of lever be connected with pull bar 22 with pull bar 21.The scheme that this embodiment takes in two trailing wheels, only to make the braking force magnification factor of one of them trailing wheel to equal 22.2.And take to increase the scheme of the power arm (swing arm 5) of the lever on one of them trailing wheel back-plate.

Desire increases the length of the power arm (swing arm 5) of the lever on one of them trailing wheel back-plate; Make its magnification factor equal 22.2 times; Can establish this power arm is unknown number, in the power arm and the formula below the substitution of resistance arm numerical value with magnification factor 22.2 and other levers that can know:

$D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

$22.2=\frac{210}{43}\×\frac{150}{100\×2}\×\frac{C}{13}$

Try to achieve: the C=78.79 millimeter

78.79-75=3.79 millimeter

When the power arm (swing arm 5) of the lever on one of them trailing wheel back-plate increases by 3.79 millimeters; That is: the power arm of the lever on one of them trailing wheel back-plate (swing arm 5) is when actual length equals 78.79 millimeters, and the braking force magnification factor of this one of them trailing wheel just equals 22.2 times.

This embodiment has taked to increase the scheme of the power arm of the lever on one of them trailing wheel back-plate; Taked unequal, the asymmetric scheme of braking force of two trailing wheels, though the braking effect of this embodiment is unable to catch up with the good braking effect of first embodiment.But, in practice,, also improved braking effect to a certain extent as long as there is the braking force of a trailing wheel to increase.

Fig. 5 shows the 3rd embodiment of back wheel pull-rod type service brake structure of the motor-tricycle of the utility model.It comprises four levers: by each the swing arm lever (lever that swing arm 5 and camshaft 6 are formed) that is positioned on two trailing wheel back-plates; A foot pedal lever (stepping on the lever that arm 1 and treadle 2 are formed) and the middle lever (levers of rocking arm 3 and rocking bar 4 compositions) between these three levers that is positioned at the chaufeur underfooting is formed; The resistance arm of the lever of chaufeur underfooting (treadle 2) is connected with pull bar 20 with the power arm (rocking arm 3) of middle lever, two resistance arms (rocking bar 4) of middle lever respectively with two trailing wheel back-plates on the power arm (swing arm 5) of lever be connected with pull bar 22 with pull bar 21.This embodiment takes to make the braking force magnification factor of two trailing wheels to equal 22.2 times scheme respectively, and takes to increase the scheme of the power arm [straight-line distance between the geometric center point of plate face of pedal 10 is arrived in the axle center of axle 11 (stepping on the axle of arm 1 place lever)] of the lever of chaufeur underfooting.

According to formula: $D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

$22.2=\frac{E}{43}\×\frac{150}{100\×2}\×\frac{75}{13}$

Try to achieve: the E=220.62 millimeter.

220.62-210=10.62 millimeter

When the power arm of the lever of chaufeur underfooting increases by 10.62 millimeters, that is: when this power arm actual length be: in the time of 220.62 millimeters, the braking force magnification factor of these two trailing wheels equals 22.2 times respectively.

According to rough estimation, 9.8 millimeters of the every growths of the power arm of the lever of chaufeur underfooting, the braking force that can double approximately.After taking to increase by 10.62 millimeters scheme, approximately can increase by 70.85 kilograms braking force.

Fig. 6 shows the 4th embodiment of back wheel pull-rod type service brake structure of the motor-tricycle of the utility model.It comprises four levers: by each the swing arm lever (lever that swing arm 5 and camshaft 6 are formed) that is positioned on two trailing wheel back-plates; A foot pedal lever (stepping on the lever that arm 1 and treadle 2 are formed) and the middle lever (levers of rocking arm 3 and rocking bar 4 compositions) between these three levers that is positioned at the chaufeur underfooting is formed; The resistance arm of the lever of chaufeur underfooting (treadle 2) is connected with pull bar 20 with the power arm (rocking arm 3) of middle lever, two resistance arms (rocking bar 4) of middle lever respectively with two trailing wheel back-plates on the power arm (swing arm 5) of lever be connected with pull bar 22 with pull bar 21.This embodiment takes to make the braking force magnification factor of two trailing wheels to equal 22.2 scheme respectively, and the scheme of the power arm (rocking arm 3) of lever in the middle of taking to increase.

The length of the power arm (rocking arm 3) of lever made its magnification factor equal 22.2 times in the middle of desire increased, and can establish this power arm is unknown number, in the formula below the numerical value substitution of the power arm of magnification factor and the lever that can know and resistance arm:

$D=\frac{E}{e}\×\frac{R}{2r}\×\frac{C}{c}$

$22.2=\frac{210}{43}\&times;\frac{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HSA00000525214900011.png,HSA00000525214900031.png"\; state="\{\{state\}\}">R</figure-callout>}}{2\&times;100}\&times;\frac{75}{13}$

Try to achieve: the R=157.58 millimeter

157.58-150=7.58 millimeter

When the power arm (rocking arm 3) of middle lever increases by 7.58 millimeters, that is: when the actual length of the power arm of middle lever equaled 157.58 persons of outstanding talent meter, the braking force magnification factor of two trailing wheels equaled 22.2 times respectively.

According to rough estimation, 7.02 millimeters of the every growths of the power arm on the middle lever, the braking force that approximately can double.After taking to increase by 7.58 millimeters scheme, can increase by 70.19 kilograms braking force approximately.

Fig. 7 shows the 5th embodiment of back wheel pull-rod type service brake structure of the motor-tricycle of the utility model.It comprises five levers altogether: wherein four levers are prior art, the lever that another lever is set up for this embodiment.Four levers of the prior art are: be positioned at each the swing arm lever (levers of swing arm 5 and camshaft 6 compositions) on two trailing wheel back-plates; A foot pedal lever of chaufeur underfooting (stepping on the lever that arm 1 and treadle 2 formed) and middle the lever (levers of rocking arm 3 and rocking bar 4 compositions) between these three levers, two resistance arms (rocking bar 4) on the middle lever respectively with two trailing wheel back-plates on the power arm (swing arm 5) of lever be connected with pull bar 22 with pull bar 21.The lever that this embodiment is set up is between the lever and described middle lever of chaufeur underfooting; As shown in the figure; Be connected with pull bar between the resistance arm (treadle 2) of the power arm of the lever that this is set up and the lever of chaufeur underfooting, the resistance arm of the lever that this is set up with described in the middle of the power arm (rocking arm 3) of lever be connected with pull bar.The purpose that this embodiment is set up a lever is in order to improve braking force, so the power arm of the lever that this is set up must be greater than resistance arm.

In above-mentioned each embodiment; Make magnification factor equal 22.2; In like manner; According to formula:

can obtain the required power arm length of each lever of motor-tricycle when magnification factor equals 23.7,25.2,27,28.8,32 and 45; Method is: in the formula that magnification factor and known power arm, the substitution of resistance arm numerical value is above-mentioned, thereby try to achieve the length of required power arm.

The braking force magnification factor (abbreviation magnification factor) of having listed the trailing wheel of motor-tricycle below equals 23.7,25.2,27,28.8,32 and at 45 o'clock, the length that the power arm of each lever is required:

When magnification factor equals 23.7:

The power arm of the lever on the trailing wheel back-plate equals 84.12 millimeters.

The power arm of the lever of chaufeur underfooting equals 235.53 millimeters.

The power arm of middle lever equals 168.23 millimeters.

When magnification factor equals 25.2:

The power arm of the lever on the trailing wheel back-plate equals 89.44 millimeters.

The power arm of the lever of chaufeur underfooting equals 250.43 millimeters.

The power arm of middle lever equals 178.88 millimeters.

When magnification factor equals 27:

The power arm of the lever on the trailing wheel back-plate equals 95.83 millimeters.

The power arm of the lever of chaufeur underfooting equals 268.32 millimeters.

The power arm of middle lever equals 191.66 millimeters.

When magnification factor equals 28.8:

The power arm of the lever on the trailing wheel back-plate equals 102.22 millimeters.

The power arm of driving the lever of underfooting equals 286.21 millimeters.

The power arm of middle lever equals 204.43 millimeters.

When magnification factor equals 32:

The power arm of the lever that pull at the trailing wheel braking end equals 113.57 millimeters.

The power arm of the lever of chaufeur underfooting equals 318 millimeters.

The power arm of middle lever equals 227.15 millimeters.

When magnification factor equals 45:

The power arm of the lever on the trailing wheel back-plate equals 159.71 millimeters.

The power arm of the lever of chaufeur underfooting equals 447.2 millimeters.

The power arm of middle lever equals 319.43 millimeters.

Listed each power arm required numerical value of motor-tricycle when magnification factor equals 23.7,25.2,27,28.8,32 and 45 times above, in fact magnification factor also can be between them, even magnification factor can be more than 45 times.When magnification factor more than 45 times the time, braking effect is better.

Only be to increase magnification factor through the method that increases one or two power arm above, in fact can also increase a plurality of power arms simultaneously, that is to say, above-mentioned each embodiment can be implemented simultaneously.

Be that method through the motive force of growth arm increases magnification factor above, the method that in fact can also take to reduce resistance arm increases magnification factor.But, be advisable to increase power arm.

In the 5th embodiment, set up a lever in the above, in fact can also set up two or more levers.But, be made as suitable to reduce as far as possible.

The back wheel pull-rod type service brake device of electro-tricycle is almost completely identical with the back wheel pull-rod type service brake device of motor-tricycle, and (different almost only is dynamic traction device; In addition, the braking force magnification factor of the middle lever of electro-tricycle is 0.5).

According to the fwd formula: the magnification factor that

can calculate the rear-wheel braking force of electro-tricycle equally meets or exceeds 15,15.9,16.8,18,19.2,22 and at 32 o'clock, the concrete numerical value of the length of the required increase of power arm of each lever.

Listed electro-tricycle (other omissions) when the braking force magnification factor of trailing wheel equals 15 and 15.9 below, the length [maximum Zhao of Handan City, Hebei province trump electro-tricycle (in September, 2010 production) is immediate prior art with magnification factor] that the power arm of each lever is required:

When magnification factor equals 15:

The power arm of the lever on the trailing wheel back-plate equals 84.38 millimeters.

The power arm of the lever of the he person of sailing underfooting equals 421.88 millimeters.

The power arm of middle lever equals 79.1 millimeters.

When magnification factor equals 15.9:

The power arm of the lever on the trailing wheel back-plate equals 89.44 millimeters.

The power arm of the lever of chaufeur underfooting equals 447.19 millimeters.

The power arm of middle lever equals 83.85 millimeters.

About lever: " five elements " in the lever and the notion relevant with lever, the unified regulation of science is all arranged in country or the textbook, should be as the criterion with unified regulation of the science in country or the textbook.

About the maximum power arm: for a concrete rod-pulling type motor-tricycle; The numerical value of the maximum power arm of each lever is objective definite; It is an outwardness; It disobeys your subjective will for shifting, and it disobeys any method of measurement for shifting, and the method for measurement of also disobeying the utility model is for shifting.In other words: if the described method of measurement of the concrete method of measurement of the not shown maximum power arm of the utility model or the utility model lacks correctness; So; The numerical value of maximum power arm is always objective; Change or crooked no matter what trailing wheel swing arm 5, the shape of stepping on arm 1 and rocking arm 3 add, should seek truth from facts ground be as the criterion with the outwardness of science.

About the magnification factor of the braking force of trailing wheel,

The described magnification factor of the utility model all is meant theoretic magnification factor, rather than refers to actual magnification factor (promptly not being meant with the measured magnification factor that comes out of spring balance or other force indicators).Because the existence of friction force is arranged in reality, a plurality of levers will have very big expenditure of energy and loss in the process of transfer function power.So magnification factor should be according to the structure of lever, the length of power arm and resistance arm is as the criterion with accurate Theoretical Calculation.According to formula:

$D=\frac{E}{e}\&times;\frac{R}{2r}\&times;\frac{C}{c}$

Every power arm and the above-mentioned formula of resistance arm numerical value substitution with each lever through Theoretical Calculation, when magnification factor (D) is equal to or greater than the described numerical value of the utility model, just should fall within the scope of the utility model.

Claims (14)

1. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 22.2 or between 22.2～23.7, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 22.2 or between 22.2～23.7 divided by the merchant of the power gained of the lever of chaufeur underfooting.

2. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 23.7 or between 23.7～25.2, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 23.7 or between 23.7～25.2 divided by the merchant of the power gained of the lever of chaufeur underfooting.

3. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 25.2 or between 25.2～27, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 25.2 or between 25.2～27 divided by the merchant of the power gained of the lever of chaufeur underfooting.

4. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It holds to levy: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 27 or between 27～28.8, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 27 or between 27～28.8 divided by the merchant of the power gained of the lever of chaufeur underfooting.

5. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 28.8 or between 28.8～32, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 28.8 or between 28.8～32 divided by the merchant of the power gained of the lever of chaufeur underfooting.

6. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever of pulling at two trailing wheels braking ends, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It holds to levy: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes the lever that two trailing wheels braking ends pull in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 32 or between 32～45, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 32 or between 32～45 divided by the merchant of the power gained of the lever of chaufeur underfooting.

7. the back wheel pull-rod type service brake of a motor-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; The power arm of the lever that two resistance arms of middle lever are pulled with two trailing wheels braking ends respectively is connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again, perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned, the resistance that makes the lever that two trailing wheels braking ends pull in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant >=45 perhaps in theory only make merchant >=45 of the resistance of the lever on any trailing wheel back-plate divided by the power gained of the lever of chaufeur underfooting.

8. the back wheel pull-rod type service brake of an electro-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 15 or between 15～15.9, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 15 or between 15～15.9 divided by the merchant of the power gained of the lever of chaufeur underfooting.

9. the back wheel pull-rod type service brake of an electro-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 15.9 or between 15.9～16.8, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 15.9 or between 15.9～16.8 divided by the merchant of the power gained of the lever of chaufeur underfooting.

10. the back wheel pull-rod type service brake of an electro-tricycle is constructed; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 16.8 or between 16.8～18, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 16.8 or between 16.8～18 divided by the merchant of the power gained of the lever of chaufeur underfooting.

11. the back wheel pull-rod type service brake structure of an electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 18 or between 18～19.2, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 18 or between 18～19.2 divided by the merchant of the power gained of the lever of chaufeur underfooting.

12. the back wheel pull-rod type service brake structure of an electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 19.2 or between 19.2～22, and the resistance that perhaps in theory only makes the lever on any trailing wheel back-plate equals 19.2 or between 19.2～22 divided by the merchant of the power gained of the lever of chaufeur underfooting.

13. the back wheel pull-rod type service brake structure of an electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; Two resistance arms of middle lever respectively with two trailing wheel back-plates on the power arm of lever be connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again; Perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned; The resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively, and one of them merchant equals 22 or between 22～32, and the resistance that perhaps in theory only makes the lever that any trailing wheel braking end pulls equals 22 or between 22～32 divided by the merchant of the power gained of the lever of chaufeur underfooting.

14. the back wheel pull-rod type service brake structure of an electro-tricycle; It mainly is made up of lever in the middle of lever of each lever on two trailing wheel back-plates, chaufeur underfooting and between these three levers one; Be connected with pull bar or backguy between the resistance arm of the lever of chaufeur underfooting and the power arm of middle lever; The power arm of the lever that two resistance arms of middle lever are pulled with two trailing wheels braking ends respectively is connected with pull bar or backguy; It is characterized in that: through increase in described four levers any or any more than the length of power arm of lever; Perhaps reduce the length of the resistance arm of any or any the above lever in described four levers; Perhaps set up one or more lever again, perhaps wherein wantonlyly have concurrently simultaneously more than two for above-mentioned, the resistance that makes two levers on the trailing wheel back-plate in theory equates divided by two merchants of the power gained of the lever of chaufeur underfooting respectively; One of them merchant >=32 perhaps in theory only make merchant >=32 of the resistance of the lever on any trailing wheel back-plate divided by the power gained of the lever of chaufeur underfooting.

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