CN104097733A - Rear wheel muscular energy service braking device of diesel three-wheel vehicle - Google Patents

Abstract

The invention relates to a rear wheel muscular energy service braking device of a diesel three-wheeled vehicle. Specifically, the invention relates to a diesel three-wheeled vehicle, in particular to a rear wheel muscular energy service braking device of the vehicle. The rear wheel muscular energy service braking device is a muscular energy braking device and the braking force of the braking device is larger. The rear wheel muscular energy service braking device at least comprises a lever, wherein a power arm and a resistance arm of each lever are connected. The rear wheel muscular energy service braking device is characterized in that the goal of improving braking force is achieved mainly by increasing the length of the power arm of any one or any more than one lever in the device. Moreover, the invention also provides a rear wheel muscular energy service braking device, matched with a lever-type brake shoe for three-wheeled and other vehicles (called as lever-type brake shoe for short), of the diesel three-wheeled vehicle. As long as the length of the power arm is increased, the moving distance of a power acting point can be enabled to be increased and thus the characteristic of greater opening extent of the lever-type brake show can be met.

Description

The trailing wheel manpower service braking device of diesel oil three-wheeled vehicle

Technical field

The present invention relates to manual braking's formula diesel oil three-wheeled vehicle, particularly the trailing wheel manpower service braking device of manual braking's formula diesel oil three-wheeled vehicle.

Background technology

For a long time, China is every year because the dead and wounded number that traffic accident causes is wandered 310,000 left and right rows, and in rising trend, the traffic accident that relates to diesel oil three-wheeled vehicle has accounted for again certain proportion, the especially big traffic accident that relates to diesel oil three-wheeled vehicle having in an accident with regard to more than dead tens people, this except driveship not high, violating the regulations overcrowding beyond, the brake failure of diesel oil three-wheeled vehicle is also major reason, particularly manual braking's formula diesel oil three-wheeled vehicle.Therefore, in public centres, spreading widely in short: " brake of manual braking's formula diesel oil three-wheeled vehicle is not all right ".

For this reason, let us is done a service brake experiment.Experimental article is: (using completely the muscle strength of chaufeur as only braking energy source, increase the brake equipment of braking force by the principle of lever force-saving, we are called manual braking's formula brake equipment it to manual braking's formula diesel oil three-wheeled vehicle.At present, the trailing wheel of some diesel oil three-wheeled vehicle adopts manual braking's formula brake equipment).Experiment purpose: the service brake effect of surveyor's dynamic braking formula diesel oil three-wheeled vehicle.When this vehicle empty wagons moving velocity is approximately 30 kilometers per hour, step on fiercely brake pedal, vehicle stops in the place ahead of about 10 meters of left and right, wheel not obvious from the braking mark between ground (be wheel degree different embrace not dead); While reforming above-mentioned experiment after load-carrying, between wheel and ground, can not find especially a bit braking mark, i.e. wheel complete hold dead (in braking procedure, be only can feel resistant existence).The above-mentioned service brake experiment of repeatedly reforming of manual braking's formula diesel oil three-wheeled vehicle of using other various brands instead, result is all roughly the same.

Experimental result: during the service brake of (1) manual braking's formula diesel oil three-wheeled vehicle empty wagons, braking effect is poor, and rear wheel is embraced not dead in varying degrees, and braking mark is not obvious; (2) after the load-carrying of manual braking's formula diesel oil three-wheeled vehicle during service brake, trailing wheel is almost complete absence of braking mark, and wheel almost complete hold is not dead, and braking is almost in malfunctioning state; (3) after load-carrying, braking is almost the universal phenomenon of manual braking's formula diesel oil three-wheeled vehicle of various brands in malfunctioning state.

Since the early 1990s in last century, a large amount of manual braking's formula diesel oil three-wheeled vehicles imitates manual braking's formula motor-tricycle, so far there is the history of recent two decades the sixth of the twelve Earthly Branches, it is increasing that the development of manual braking's formula diesel oil three-wheeled vehicle is car body, car body quality is increasing, the situation that manufacturing scale is increasing, yet, brake equipment is almost indiscriminately imitated the brake equipment of motor-tricycle then so far completely, car body quality and braking force are seriously incompatible, and the car body quality day by day increasing displays more and more highlightedly with the hypodynamic contradiction of braking.

[effective weight of manual braking's formula diesel oil three-wheeled vehicle that find the sixth of the twelve Earthly Branches reaches 2310 kilograms (not comprising load carrying ability).For example: two power board manual braking formula diesel oil three-wheeled vehicles that the model that Shandong Province Shuan Li group produces in February, 2012 is 7YP-1150D, only from weighing 2310 kilograms, wherein, are conducted oneself with dignity: 1470 kilograms; Reorganize and outfit: 840 kilograms (not comprising load carrying ability)].

The every manual braking's of the relating to problem of service brake effect that how to improve manual braking's formula diesel oil three-wheeled vehicle, all be unable to do without lever problem,

The strong lever that is called that can rotate around attachment point under the effect of power, such as: crow bar, tractor driver Bing etc. draws water.Lever can be straight, can be also curved, and " strong " be rod not necessarily, and general reference has certain length but indeformable object under external force.

Lever has " five elements ":

(1) fulcrum: lever, around the attachment point rotating, is called fulcrum.When lever rotates, fulcrum is 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 dynamic action line, is called power arm.

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

Fig. 1 is the schematic diagram of simplification of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the prior art.It comprises five levers: be positioned at each lever on two trailing wheel back-plates, we can be called for short and be called rear turbine/lever, and this rear turbine/lever is comprised of the power arm 5 on rear turbine/lever, camshaft 6; A lever that is positioned at chaufeur underfooting, we can be called for short and be called foot pedal lever, and this foot pedal lever steps on by stepping on arm 1[the power arm that arm 1 is not foot pedal lever.The power arm of foot pedal lever refers to: from the axle center (fulcrum) of this lever to the straight-line distance of the geometric center point of the plate face of brake pedal 10.During every power arm of addressing foot pedal lever, all refer to from the axle center of this lever to the straight-line distance of the geometric center point of the plate face of pedal 10.Down together], treadle 2 and axle 11 (fulcrum) form; What be connected with foot pedal lever is a small lever, is mainly that we can be called for short it to be called steering lever for changing the direction of power, and this steering lever is comprised of swing arm 7, fork 8 and axle 11 (fulcrum); Between this steering lever and rear turbine/lever, be provided with a lever, we can be called for short this lever to be called middle lever, are provided with two resistance arms and a power arm on this centre lever, and this centre lever is comprised of rocking arm 3, rocking bar 4 and axle 11; Between resistance arm 2 on foot pedal lever and the power arm swing arm 7 on steering lever, with pull bar 19, be connected, between resistance arm fork 8 on steering lever and power arm rocking arm 3 on middle lever, with pull bar 20, be connected, between the power arm 5 of two resistance arms (rocking bar 4) on middle lever and the lever on two trailing wheel back-plates, with pull bar 21, pull bar 22, be connected respectively.(not shown trailing wheel back-plate, only illustrates the brake shoe brake cheek 30 being positioned on this back-plate; In addition, in figure, also show brake pedal 10).

The above-mentioned lever that is positioned at chaufeur underfooting, we also can be called first lever it; Above-mentioned be positioned at the lever on trailing wheel back-plate, we also can be called last lever it, and (for Geng Qing Chu, when Manual braking device is while consisting of a plurality of levers, the lever that we apply application force chaufeur is called first lever.According to this order, be directly connected the lever of (being close to) with first lever, we are called second lever it.The like ...When Manual braking device is while consisting of a plurality of levers, we are being called last lever apart from first lever that lever farthest).

Manual braking's formula diesel oil three-wheeled vehicle imitates manual braking's formula motor-tricycle, and the trailing wheel manpower service braking device of motor-tricycle is by the trailing wheel manpower service braking device transformation of two-wheeled motor vehicle.We make comparisons the trailing wheel manpower service braking device of the trailing wheel manpower service braking device of manual braking's formula diesel oil three-wheeled vehicle and two-wheeled motor vehicle, the foot pedal lever of finding them is almost identical (these two levers being made comparisons with rear turbine/lever, its shape, the comparison of size and power arm and resistance arm, all almost identical), their difference is only to have had more in the trailing wheel manpower service braking device of manual braking's formula diesel oil three-wheeled vehicle two levers (lever in the middle of steering lever and, the effect of steering lever is mainly for changing the direction of power, generally, power arm and resistance arm are about equally).

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

For a long time, manual braking's formula diesel oil three-wheeled vehicle that the enterprise of the manufacture diesel oil three-wheeled vehicle of domestic various brands produces, the structure of nearly all middle lever is just the same, that is: all take two resistance arms (rocking bar 4) on middle lever to equate, and equate with structure (in recent years with the power arm (rocking arm 3) on this centre lever, only indivedual vehicles take in the middle of power arm on lever be slightly larger than the situation of the resistance arm on this centre lever, as: the model of Feitian five-pointed star in February, 2013 production is: 7YP-1475D2B, power arm on middle lever is: 100 millimeters, two resistance arms on this centre lever are: 77 millimeters, but, other vehicles that this factory produces still take two resistance arms on middle lever to equate, and the structure equating with power arm on this centre lever, for example: the vehicle of this Feitian five-pointed star in November, 2012 production is: manual braking's formula diesel oil three-wheeled vehicle of 7YP-1175-3B, power arm on middle lever is: 65 millimeters, two resistance arms on this centre lever are: 65 millimeters).

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

The pulling force that represents pull bar 21 with M

The pulling force that represents pull bar 22 with N

The power arm of lever in the middle of representing with R

The resistance arm of lever in the middle of representing with r

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

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

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

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

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

Due to: R=r

So: F=M+N

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

So: M=N

From analysis above, can find out: two resistance arms when middle lever equate, and when power arm on this centre lever equates, 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 respectively half of pulling force of pull bar 20.

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

From above formula, can find out: the pulling force of pull bar 21 equals half of pulling force of pull bar 20, the pulling force of pull bar 22 also equals half of pulling force of pull bar 20, that is to say, in braking procedure, pulling force is by after middle lever, and the size of its pulling force will reduce half, and (strictly speaking, moment has reduced half.Two resistance arms on middle lever equate, and when power arm on this centre lever equates, for pulling force has reduced half).

Above-mentioned conclusion also can be confirmed by experiment.Experimental technique is: three pull bars (pull bar 20, pull bar 21 and pull bar 22) are blocked from middle part, in each truncated position, connect respectively a spring balance, three pull bars connect three spring balances altogether, when we are applied to the application force varying in size on pedal 10, read respectively the numerical value of three spring balances, consequently: the pulling force of pull bar 21 equates all the time with the pulling force of pull bar 22, and the pulling force of pull bar 21 equal all the time half of pulling force of pull bar 20; The pulling force of pull bar 22 also equals half of pulling force of pull bar 20 all the time.For example: when the reading of the spring balance on pull bar 20 is 10 kilograms, the reading of the spring balance on pull bar 21 is 5 kilograms, and the reading of the spring balance on pull bar 22 is also 5 kilograms; When the reading of the spring balance on pull bar 20 is 30 kilograms, the reading of the spring balance on pull bar 21 is 15 kilograms, and the reading of the spring balance on pull bar 22 is also 15 kilograms; When the reading of the spring balance on pull bar 20 is 60 kilograms, the reading of the spring balance on pull bar 21 is 30 kilograms, and the reading of the spring balance on pull bar 22 is also 30 kilograms etc.

For a long time, this two resistance arms in the middle of people do not recognize on lever equate, and the structure equating with power arm on this centre lever can cause braking force to reduce the consequence of half, that is to say, pulling force is by after middle lever, and the size of its pulling force will reduce half.It is at least the short and small shortcoming of power arm of any lever or the lever that any is above that thereby the rear wheel travelling crane braking device of not recognizing manual braking's formula diesel oil three-wheeled vehicle exists.

[at present, on market, find that the power arm on middle the lever of indivedual vehicles is slightly larger than the situation of resistance arm, (and for example: the 7YP-1475D2B of Feitian five-pointed star in February, 2013 production, the power arm on the middle lever of this vehicle is: 100 millimeters; Two resistance arms on this centre lever equate, be equal to 77 millimeters), still, still can not regard the objective fact that people have recognized that middle lever causes as, that is: people still do not recognize that pulling force passes through, after middle lever, can cause pulling force to reduce the objective fact of half.While only having the length of the power arm on middle lever to equal two resistance arm length sums on this centre lever, just can regard the objective fact that pulling force that people have recognized that middle lever causes reduces by half as, because while only having the length of the power arm on middle lever to equal the length of the resistance arm on this centre lever of twice, just can make pulling force pass through after middle lever, remain unchanged, for example (if): in the middle of certain, on lever, be provided with a power arm and two resistance arms, the maxim of power arm is: 200 millimeters, the maxim of one of them resistance arm is: 100 millimeters, the maxim of another resistance arm is also: 100 millimeters, so, pulling force is by after this centre lever, the size of its pulling force remains unchanged.In addition, from another aspect, also can find out people do not recognize in the middle of the objective fact that reduces by half of the pulling force that causes of lever, although people have produced the middle lever that power arm is slightly larger than resistance arm, but in the same period, people still equate at two resistance arms of production, and the middle lever equating with power arm on this centre lever, for example: the model that Feitian five-pointed star produces for 2013 2 is: manual braking's formula diesel oil three-wheeled vehicle of 7YP-1475D2B, power arm on middle lever is 100 millimeters, and two resistance arms on this centre lever are 77 millimeters; The model that Feitian five-pointed star produced in November, 2012 is: manual braking's formula diesel oil three-wheeled vehicle of 7YP-1175-3B, and the power arm on middle lever is 65 millimeters, two resistance arms on this centre lever are 65 millimeters].

From analysis and experiment above, can find out: existing manual braking's formula diesel oil three-wheeled vehicle is with respect to two-wheeled motor vehicle, the car body quality of manual braking's formula diesel oil three-wheeled vehicle has increased, but braking force has approximately declined half on the contrary, be approximately the braking force of two-wheeled motor vehicle

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

So the braking effect of manual braking's formula diesel oil three-wheeled vehicle is poor, wheel embrace not dead basic reason be in the middle of two resistance arms on lever.

[specific to lever above, fulcrum refers to the center-point of the axle 11 of lever, i.e. axle center; Power and drag effect line refer to 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 it) of pull bar; Power arm and resistance arm refer to axial line from lever (line of numerous AnchorPoint and the extended line of this line, we are called axial line it, below all like this) to the vertical distance between the bar heart line of pull bar].

In Fig. 1, the resistance arm of foot pedal lever and the resistance arm of middle lever (rocking bar 4) are high-visible, play rear turbine/lever resistance arm effect be camshaft 6.

Fig. 2 shows the schematic diagram of the amplification of camshaft 6.The resistance arm of the rear turbine/lever of existing manual braking's formula diesel oil three-wheeled vehicle all adopts camshaft 6 as shown in Figure 2 substantially.As can be seen from Figure, camshaft 6 is in the process around 0 rotation in axle center, and 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, and because the existing camshaft that plays resistance arm effect 6 all adopts shape as shown in Figure 2, and size is that unified (its longitudinal length L is: 38 millimeters substantially; Its thickness M is 21 millimeters), so its OB line segment can regard constant as, that is to say, the resistance arm on existing rear turbine/lever can be regarded as a constant.Through measuring OB line segment, be 17 millimeters, that is: the resistance arm of the rear turbine/lever of existing manual braking's formula diesel oil three-wheeled vehicle is 17 millimeters.

In the prior art, the trailing wheel manpower service braking device of manual braking's formula diesel oil three-wheeled vehicle also has a kind of lever construction, on the lever (foot pedal lever) of chaufeur underfooting, be provided with two resistance arms exactly, between power arm after these two resistance arms and two on turbine/lever, with two pull bars, connect (at the middle part of these two pull bars, be respectively arranged with a lever, we are called side lever this lever) respectively.Different from the lever construction shown in Fig. 1 on this body structure surface, but they do not have in fact essential difference, the foot pedal lever in this device is actually foot pedal lever in Fig. 1 and middle lever and merges and form.Equally, people do not recognize: the foot pedal lever of two resistance arms is compared with the foot pedal lever of a resistance arm, the resistance that the foot pedal lever of two resistance arms produces has reduced half, that is: the pulling force that the foot pedal lever of two resistance arms is exported has reduced half, that is to say: the relation of two resistance arms and a resistance arm is exactly component and the relation of making a concerted effort.

The characteristic that the braking force that two resistance arms in the middle of the poor basic reason of braking effect of manual braking's formula diesel oil three-wheeled vehicle is on lever produce reduces by half, that is to say, these two resistance arms make the braking force magnification factor of brake equipment reduce half.

In fact so-called braking force magnification factor is exactly that (described theory refers to this brake equipment under perfect condition, and, in braking procedure, the friction force and the waste of power that between the axle in this brake equipment and axle, produce are ignored in theory.Another aspect, the resistance that the present invention is alleged, all refer to the resistance in lever " five elements ", it is theoretic resistance, that is to say, when every the present invention addresses resistance, all refer to the resistance in lever " five elements ", be the resistance under perfect condition, that is: the fulcrum of lever produces friction force and waste of power are ignored.) with the resistance on turbine/lever after two, divided by two business of the power gained of the lever of chaufeur underfooting, (the magnification factor here refers to one of them business respectively.Conventionally, braking force magnification factor also can be called for short and be called magnification factor).

(in fact these two business are exactly minute other braking force magnification factor of two trailing wheels, and generally, the braking force of two trailing wheels equates, is symmetrical, and these two business equate.For the convenience of narrating, we are called for short one of them business in these two business the braking force magnification factor that is called trailing wheel.That is to say, when addressing the braking force magnification factor of trailing wheel, all refer to one of them business, 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).

For example: the power that chaufeur is applied to pin on the pedal of foot pedal lever is 65 kilograms, two resistances perpendicular to resistance arm that camshaft after two on turbine/lever obtains are respectively 1170 kilograms, so, 1170 ÷ 65=18, we can be called for short: the braking force magnification factor of trailing wheel is: 18 times.(now, generally, the braking force magnification factor of another trailing wheel should be also 18 times).

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

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

From above formula, can find out: in fact power arm is exactly the braking force magnification factor of an independent lever divided by the business of resistance arm gained.

If represent the power arm of foot pedal lever with E; The resistance arm that represents foot pedal lever with e;

The power arm that represents steering lever with Z; The resistance arm that represents steering lever with z;

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

The power arm that represents rear turbine/lever with C; The resistance arm that represents rear turbine/lever with c;

The power that represents foot pedal lever with W;

With w, represent the resistance on turbine/lever after independent;

The braking force magnification factor that represents an independent trailing wheel with D;

So, the braking force magnification factor of foot pedal lever is:

The braking force magnification factor of steering lever is:

The braking force magnification factor of middle lever is:

After independent one, the braking force magnification factor of turbine/lever is:

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

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

That is to say: the magnification factor of the braking force of an independent trailing wheel equals the amassing of braking force magnification factor of each lever.

If: being constructed as follows of the trailing wheel brake equipment of certain manual braking's formula diesel oil three-wheeled vehicle (Fig. 1 can be for referencial use):

The power arm of foot pedal lever is: the resistance arm of 300 millimeters of foot pedal levers is: 50 millimeters

The power arm of steering lever is: the resistance arm of 50 millimeters of steering levers is: 50 millimeters

The power arm of middle lever is: two resistance arms in the middle of 80 millimeters on lever are: 80 millimeters

The power arm of rear turbine/lever is: after 85 millimeters, the resistance arm of turbine/lever is: 17 millimeters

If the application force that chaufeur is applied on the pedal of foot pedal lever is 60 kilograms (W=60 kilogram)

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

The resistance of foot pedal lever is:

(in fact the resistance of foot pedal lever is exactly the power of steering lever, meanwhile, also equals the pulling force of pull bar 19)

That is:

The resistance of steering lever is:

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

The resistance of middle lever is:

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

(from instantiation above, can find out: the pulling force of three pull bars is respectively: the pulling force of pull bar 20: 360 kilograms; The pulling force of pull bar 21 is 180 kilograms, and the pulling force of pull bar 22 is: 180 kilograms.Here find out again: pulling force is by after middle lever, and the size of its pulling force has reduced half).

The resistance of turbine/lever after independent one:

The braking force magnification factor of an independent trailing wheel:

On the other hand: root Ju formula:

The braking force magnification factor of an independent trailing wheel:

The braking force magnification factor of foot pedal lever:

300 ÷ 50=6 doubly

The braking force magnification factor of steering lever:

50 ÷ 50=1 doubly

The braking force magnification factor of middle lever:

80 ÷ (80 * 2)=0.5 times

The braking force magnification factor of rear turbine/lever:

85 ÷ 17=5 doubly

6 * 1 * 0.5 * 5=15 doubly

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

Select manual braking's formula diesel oil three-wheeled vehicle of domestic several manufacturer production that the maximum power arm found the sixth of the twelve Earthly Branches is larger below, listed maximum power arm, the maximum resistance arm of foot pedal lever in trailing wheel manpower service braking device; The maximum power arm of steering lever, maximum resistance arm; Maximum power arm, the maximum resistance arm of middle lever; The maximum power arm of side lever, maximum resistance arm; The maximum power arm of rear turbine/lever, maximum resistance arm, and the braking force magnification factor of an independent trailing wheel.

(in the prior art, the power arm after two on turbine/lever all equates, two resistance arms on middle lever all equate, the braking force of two trailing wheels equates, for briefly, only lists 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 rear turbine/lever is 100 millimeters ", the maximum power arm that refers to turbine/lever after two equates, and after one of them, the maximum power arm of turbine/lever is: 100 millimeters.Again for example: when listing certain " the maximum resistance arm on middle lever is 80 millimeters ", refer to and at this, above the lever of centre, be provided with two resistance arms, and these two resistance arms are equal, the numerical value of one of them maximum resistance arm is 80 millimeters).

[power arm of lever can regulate, and in braking procedure, is (or the rotation) changing, and when swing arm 7, rocking arm 3 etc. and pull bar are mutual vertical, is maximum power arm; In like manner, when fork 8, rocking bar 4 etc. and pull bar are mutual vertical, be maximum resistance arm, maximum power arm can be called for short and be called power arm conventionally; Maximum resistance arm can be called for short and be called resistance arm.]。

The model that Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd produces in November, 2012 is: the Feitian five-pointed star board manual braking formula diesel oil three-wheeled vehicle of 7YP-1175-3B:

The power arm of foot pedal lever is: 230 millimeters; The resistance arm of foot pedal lever is: 45 millimeters (this lever is resistance arm only)

The power arm of steering lever is: 65 millimeters; The resistance arm of steering lever is: 85 millimeters

The power arm of middle lever is: 65 millimeters; Two resistance arms of middle lever are: 65 millimeters (this centre lever is provided with two resistance arms, and this centre lever is arranged on below vehicle body)

The power arm of rear turbine/lever is: 100 millimeters; The resistance arm of rear turbine/lever is: 17 millimeters

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

The braking force magnification factor of foot pedal lever: 230 ÷ 45=5.11 doubly

The braking force magnification factor of steering lever: 65 ÷ 85=0.76 doubly

The braking force magnification factor of middle lever: 65 ÷ (65 * 2)=0.5 times

The braking force magnification factor of rear turbine/lever: 100 ÷ 17=5.88 doubly

The braking force magnification factor of an independent trailing wheel: 5.11 * 0.76 * 0.5 * 5.88=11.42 doubly

The model that Shandong Province Shi Feng group in March, 2013 produces is: the time wind board manual braking formula diesel oil three-wheeled vehicle of 7YP-1150A32:

The power arm of foot pedal lever: 270 millimeters; The resistance arm of foot pedal lever: 50 millimeters (this lever is established a resistance arm)

The power arm of steering lever: 55 millimeters; The resistance arm of steering lever: 55 millimeters

The power arm of middle lever: 90 millimeters; Two resistance arms on middle lever are: 90 millimeters (this centre lever is provided with two resistance arms, and this centre lever is arranged on below vehicle body)

The power arm of rear turbine/lever: 90 millimeters; The resistance arm of rear turbine/lever: 17 millimeters

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

The braking force magnification factor of foot pedal lever: 270 ÷ 50=5.4 doubly

The braking force magnification factor of steering lever: 55 ÷ 55=1 doubly

The braking force magnification factor of middle lever: 90 ÷ (90 * 2)=0.5 times

The braking force magnification factor of rear turbine/lever: 90 ÷ 17=5.29 doubly

The braking force magnification factor of an independent trailing wheel: 5.4 * 1 * 0.5 * 5.29=14.28 doubly

The model that Shandong Shi Feng group produced in February, 2013 is: wind board manual braking formula diesel oil three-wheeled vehicle during 7YP-1150A32 another kind of:

The power arm of foot pedal lever: the resistance arm of 250 millimeters of foot pedal levers: 50 millimeters (this foot pedal lever is only established a resistance arm)

The power arm of steering lever: the resistance arm of 55 millimeters of steering levers: 55 millimeters

The power arm of middle lever: in the middle of 115 millimeters, two resistance arms of lever are: 85 millimeters (this centre lever is provided with two resistance arms)

The power arm of rear turbine/lever: the resistance arm of turbine/lever after 90 millimeters: 17 millimeters

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

The magnification factor of foot pedal lever: 250 ÷ 50=5 doubly

The magnification factor of steering lever: 55 ÷ 55=1 doubly

The magnification factor of middle lever: 115 ÷ (85 * 2)=0.68 times

The magnification factor of rear turbine/lever: 90 ÷ 17=5.29 doubly

The braking force magnification factor of an independent trailing wheel: 5 * 1 * 0.68 * 5.29=17.99 doubly

The model that Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd produces in February, 2013 is: the Feitian five-pointed star board manual braking formula diesel oil three-wheeled vehicle of 7YP-1475D2B:

The power arm of foot pedal lever: 235 millimeters; The resistance arm of foot pedal lever: 55 millimeters (only having a resistance arm on this foot pedal lever)

The power arm of steering lever: 88 millimeters; The resistance arm of steering lever: 75 millimeters

The power arm of middle lever: 100 millimeters; Two resistance arms on middle lever are: 77 millimeters (this centre lever is provided with two resistance arms, and is located at below vehicle body)

The power arm of rear turbine/lever: 95 millimeters; The resistance arm of rear turbine/lever: 17 millimeters

Formula before root Ju: $D=\frac{E}{e}\×\frac{Z}{z}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of foot pedal lever: 235 ÷ 55=4.27 doubly

The braking force magnification factor of steering lever: 88 ÷ 75=1.17 doubly

The braking force magnification factor of middle lever: 100 ÷ (77 * 2)=0.65 times

The braking force magnification factor of rear turbine/lever: 95 ÷ 17=5.59 doubly

The braking force magnification factor of an independent trailing wheel: 4.27 * 1.17 * 0.65 * 5.59=18.15 doubly

The model that Shandong Province Shuan Li group produces in March, 2013 is: two power board manual braking formula diesel oil three-wheeled vehicles of 7YP-850B:

The power arm of foot pedal lever: 300 millimeters; Two resistance arms of foot pedal lever are: 55 millimeters (this foot pedal lever is provided with two resistance arms)

The power arm of side lever: 80 millimeters; The resistance arm of side lever: 45 millimeters (each of vehicle body both sides)

The power arm of rear turbine/lever: 80 millimeters; The resistance arm of rear turbine/lever: 17 millimeters

If represent that with E the power arm of foot pedal lever represents the resistance arm of foot pedal lever with e

The power arm that represents side lever with B represents the resistance arm of side lever with b

The power arm that represents rear turbine/lever with C represents the resistance arm of rear turbine/lever with c

The braking force magnification factor that represents an independent trailing wheel with D

: $D=\frac{E}{2e}\×\frac{B}{b}\×\frac{C}{c}$

(this brake equipment is provided with two resistance arms on foot pedal lever, and the braking force magnification factor of trailing wheel also can calculate length by length)

The braking force magnification factor of foot pedal lever: 300 ÷ (55 * 2)=2.73 times

The braking force magnification factor of side lever: 80 ÷ 45=1.78 doubly

The braking force magnification factor of rear turbine/lever: 80 ÷ 17=4.71 doubly

The braking force magnification factor of an independent trailing wheel: 2.73 * 1.78 * 4.71=22.89 doubly

The model that Shandong Province Shuan Li group produces in February, 2012 is: two power board manual braking formula diesel oil three-wheeled vehicle (these dead weight of vehicles: 1470 kilograms of 7YP-1150D; Reorganize and outfit: 840 kilograms):

The power arm of foot pedal lever: 320 millimeters; Two resistance arms of foot pedal lever are: 60 millimeters (this foot pedal lever is provided with two resistance arms)

The power arm of side lever: 85 millimeters; The resistance arm of side lever: 55 millimeters (each of vehicle body both sides)

The power arm of rear turbine/lever: 80 millimeters; The resistance arm of rear turbine/lever: 17 millimeters

The braking force magnification factor of foot pedal lever: 320 ÷ (60 * 2)=2.67 times

The braking force magnification factor of side lever: 85 ÷ 55=1.55 doubly

The braking force magnification factor of rear turbine/lever: 80 ÷ 17=4.71 doubly

The braking force magnification factor of an independent trailing wheel: 2.67 * 1.55 * 4.71=19.49 doubly

The model that Shandong Province Shuan Li group produces in January, 2013 is: two power board manual braking formula diesel oil three-wheeled vehicles of L2Z12B108A0041288:

The power arm of foot pedal lever: 220 millimeters; The resistance arm of foot pedal lever: 60 millimeters (this foot pedal lever only has a resistance arm)

The power arm of steering lever: 55 millimeters; The resistance arm of steering lever: 55 millimeters

The power arm of middle lever: 115 millimeters; Two resistance arms on middle lever are: 80 millimeters (this centre lever is provided with two resistance arms, is positioned at below vehicle body)

The power arm of rear turbine/lever: 80 millimeters; The resistance arm of rear turbine/lever: 17 millimeters

Formula before root Ju: $D=\frac{E}{e}\×\frac{Z}{z}\×\frac{R}{2r}\×\frac{C}{c}$

The braking force magnification factor of foot pedal lever: 220 ÷ 60=3.67 doubly

The braking force magnification factor of steering lever: 55 ÷ 55=1 doubly

The braking force magnification factor of middle lever: 115 ÷ (80 * 2)=0.72 times

The braking force magnification factor of rear turbine/lever: 80 ÷ 17=4.71 doubly

The braking force magnification factor of an independent trailing wheel: 3.67 * 1 * 0.72 * 4.71=12.45 doubly

The model that Shandong Shi Feng group in January, 2014 produces is: the time wind board manual braking formula diesel oil three-wheeled vehicle of 7YP-1150032: the power arm of foot pedal lever: 250 millimeters; The resistance arm of foot pedal lever: 45 millimeters

The power arm of steering lever: 55 millimeters; The resistance arm of steering lever: 55 millimeters

The power arm of middle lever: 90 millimeters: the resistance arm of middle lever: 90 millimeters (this centre lever is provided with two resistance arms)

The power arm of rear turbine/lever: 90 millimeters; The resistance arm of rear turbine/lever: 17 millimeters

The magnification factor of foot pedal lever: 250 ÷ 45=5.56 doubly

The magnification factor of steering lever: 55 ÷ 55=1 doubly

The magnification factor of middle lever: 90 ÷ (90 * 2)=0.5 times

The magnification factor of rear turbine/lever: 90 ÷ 17=5.29 doubly

The braking force magnification factor of an independent trailing wheel: 5.56 * 1 * 0.5 * 5.29=14.71 doubly

From data above, can find out, in existing manual braking's formula diesel oil three-wheeled vehicle, the maxim of the braking force magnification factor of trailing wheel manpower service braking device is: 22.89[: the braking force magnification factor of an independent trailing wheel is 22.89.That is to say: an independent last lever (the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle have two after turbine/lever, we can be called an independent last lever one of them) on resistance divided by the business of the power gained on first lever (lever of chaufeur underfooting), equal 22.89], the model of producing in March, 2013 for Shandong Province Shuan Li group is: two power board manual braking formula diesel oil three-wheeled vehicles of 7YP-850B.Do not find manual braking's formula diesel oil three-wheeled vehicle that braking force magnification factor is greater than 22.89.

On the other hand:

Shortcoming for the braking force minimum (famine braking force) of the rear wheel travelling crane braking device of manual braking's formula diesel oil three-wheeled vehicle, the applicant in September, 2010 30Xiang State Intellectual Property Office submitted to respectively name to be called: < < is for utility model and the application for a patent for invention of the lever brake shoe > > (hereinafter to be referred as lever brake shoe) of three-wheeled vehicle and other vehicles, and the patent No. or application number are respectively: " 201020557185.3 ", " 201010502972.2 "; The notification number of utility model patent is: " CN201794969U ", the publication number of application for a patent for invention is: " CN102032295A ".

Manual braking's formula diesel oil three-wheeled vehicle of famine braking force is installed after " lever brake shoe ", has made up the deficiency of the braking force of brake equipment, has increased widely braking force, has improved braking effect.

The technical scheme of " lever brake shoe " is mainly on the basis of existing technology friction lining to be offset to supporting pin (fulcrum of lever) direction, has namely shortened the resistance arm of brake shoe brake cheek lever.In the situation that power arm is constant, shortened resistance arm, be just equivalent to increase the power arm of brake shoe brake cheek lever.Thereby make " lever brake shoe " become a further laborsaving lever.

Another feature of root Ju lever: the laborsaving merit of not economizing.That is: when using laborsaving lever, the power of having economized has but been taken distance, that is to say: the power of having economized has but been taken the mobile distance of dynamic action point.

Specific to manual braking's formula diesel oil three-wheeled vehicle, above-mentioned " lever brake shoe " is arranged on after described manual braking's formula diesel oil three-wheeled vehicle, due to each power arm in the rear wheel travelling crane braking device of existing manual braking's formula diesel oil three-wheeled vehicle less (also can be regarded as the mobile distance of dynamic action point less), so, the rear wheel travelling crane braking device of existing manual braking's formula diesel oil three-wheeled vehicle can not be used in conjunction with (or supporting the use) better with " lever brake shoe ", can be matching used better with " lever brake shoe " should be the equal larger brake equipment of power arm of each lever, particularly the closer to first lever, its power arm should be larger (wish increases the power arm of first lever, in fact be exactly the magnification factor that increases this lever).

From the data of various brand vehicles above, can find out: first lever, power arm divided by business's's (magnification factor) of the independent resistance arm gained on this lever maxim is: 5.56 (when first lever is provided with two resistance arms, an independent resistance arm refers to one of them resistance arm; When first lever is provided with a resistance arm, what an independent resistance arm referred to is exactly this resistance arm.This numerical value derives from: the model that Shi Feng group produces in January, 2014 is: manual braking's formula diesel oil three-wheeled vehicle of 7YP-1150032, the power arm of first lever: 250 millimeters; Resistance arm: 45 millimeters; 250 ÷ 45=5.56).This business's numerical value is of crucial importance (at present, this proportionate relationship of first lever is difficult to support the use with " lever brake shoe "), generally, when manual braking's formula diesel oil three-wheeled vehicle, install after " lever brake shoe ", this business's numerical value will be far longer than 5.56; Only have when this business's numerical value is far longer than 5.56, the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle could support the use better with " lever brake shoe ".

Summary of the invention

It is larger that the technical problem to be solved in the present invention is to provide several braking forces, and be also to provide several and " lever brake shoe " (patent No. or application number are respectively: 201020557185.3 and 201010502972.2) the trailing wheel manpower service braking device of matching used diesel oil three-wheeled vehicle better simultaneously.

For solving the problems of the technologies described above, first technical scheme of the present invention is: a kind of trailing wheel manpower service braking device of diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 23.7≤business < 24.6.

[above-mentioned Manual braking device, is exactly in fact one group of lever (or a lever), and between each lever, power arm is connected with resistance arm, make in theory the resistance of last lever larger divided by the business of the power gained of first lever].

For solving the problems of the technologies described above, second technical scheme of the present invention is: a kind of trailing wheel manpower service braking device of diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm is connected in order with resistance arm, makes in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 24.6≤business < 25.5.

For solving the problems of the technologies described above, the 3rd technical scheme of the present invention is: a kind of trailing wheel manpower service braking device of diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 25.5≤business < 26.9.

For solving the problems of the technologies described above, the 4th technical scheme of the present invention is: a kind of trailing wheel manpower service braking device of diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 26.9≤business < 28.3.

For solving the problems of the technologies described above, the 5th technical scheme of the present invention is: a kind of trailing wheel manpower service braking device of diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 28.3≤business < 35.

For solving the problems of the technologies described above, the 6th technical scheme of the present invention is: a kind of trailing wheel manpower service braking device of diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and make in theory resistance on an independent last lever divided by business >=35 of the power gained on first lever.

In above-mentioned each technical scheme, the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle also can at least comprise two levers, a near lever being positioned at chaufeur, a lever being positioned on trailing wheel back-plate, between these two levers, power arm is connected with resistance arm successively head and the tail, lever on described trailing wheel back-plate is provided with two camshafts, these two camshafts lay respectively on two trailing wheel back-plates, these two camshafts are connected by an axle, make two camshafts in coaxial state, on the axle between these two camshafts, be provided with a power arm.

For solving the problems of the technologies described above, the 8th technical scheme of the present invention is: a kind of trailing wheel manpower service brake structure of diesel oil three-wheeled vehicle, it at least comprises two levers, between each lever, power arm and resistance arm are linked in sequence, and make in theory power arm on first lever divided by the business of the independent resistance arm gained on this lever be: 5.8≤business < 6.2.

For solving the problems of the technologies described above, the 9th technical scheme of the present invention is: a kind of trailing wheel manpower service brake structure of diesel oil three-wheeled vehicle, it at least comprises two levers, between each lever, power arm and resistance arm are linked in sequence, and make in theory power arm on first lever divided by the business of the independent resistance arm gained on this lever be: 6.2≤business < 7.

For solving the problems of the technologies described above, the of the present invention ten technical scheme is: a kind of trailing wheel manpower service brake structure of diesel oil three-wheeled vehicle, it at least comprises two levers, between each lever, power arm and resistance arm are linked in sequence, and make in theory power arm on first lever divided by business >=7 of the independent resistance arm gained on this lever.

(according to lever principle: power * power arm=resistance * resistance arm; : power arm ÷ resistance arm=resistance ÷ power, as can be seen here, power arm is the one thing divided by resistance arm and resistance divided by power)

The trailing wheel manpower service braking device of diesel oil three-wheeled vehicle is taked to increase after the scheme of braking force magnification factor of whole brake equipment, has increased braking force, has improved braking effect.

The trailing wheel manpower service braking device of diesel oil three-wheeled vehicle increases after braking force, and the manufacture that has retained Manual braking device is simple, low cost of manufacture, and fault is few, and long-lived advantage has overcome the hypodynamic shortcoming of braking of Manual braking device.

Increase the braking force magnification factor of whole device, be exactly in fact the length of the power arm of the one or more lever in aggrandizement apparatus, particularly the power arm of first lever and the ratio of resistance arm have increased, the distance that dynamic action point moves has correspondingly just increased, thereby the rear wheel travelling crane braking device of this manual braking's formula diesel oil three-wheeled vehicle can be supported the use better with " lever brake shoe ".

Accompanying drawing explanation

Below in conjunction with accompanying drawing (except Fig. 1 and Fig. 2; Each accompanying drawing is the schematic diagram of simplification) the specific embodiment of the present invention is described in further detail.

Fig. 1 is the schematic diagram of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the prior art.

Fig. 2 is the schematic diagram that is positioned at the camshaft on trailing wheel back-plate of manual braking's formula diesel oil three-wheeled vehicle of the prior art.

Fig. 3 is the schematic diagram of first embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle.

Fig. 4 is the schematic diagram of the trailing wheel manpower service braking device of the diesel oil three-wheeled vehicle that contains two levers.

Fig. 5 is the schematic diagram of trailing wheel manpower service braking device that only has the diesel oil three-wheeled vehicle of a lever.

The specific embodiment

Fig. 3 shows first embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By being positioned at each lever on two trailing wheel back-plates (that is: rear turbine/lever, this lever is comprised of power arm 5 and camshaft 6), lever that is positioned at chaufeur underfooting (that is: foot pedal lever, this lever consists of a power arm and two resistance arms, that is: by one, stepping on arm 1 and two treadles 2 and axle 11 forms), two treadles 2 on this foot pedal lever are connected and (in the middle part of these two pull bars, connect respectively two levers with power arm 5 use pull bars on turbine/lever after two respectively, we are called side lever this lever, this side lever is comprised of power arm 13 and resistance arm 14 and fulcrum 11.In addition, in order to simplify, below when the formation of narration lever, axle or fulcrum can be omitted).This embodiment takes to increase the scheme of the power arm 5 of turbine/lever after two simultaneously, and these two power arms 5 are increased to the scheme (that is: the actual length of the power arm of turbine/lever is 83 millimeters after two) of 3 millimeters.

(take the model of producing Shandong Province Shuan Li group in March, 2013 of magnification factor maximum as: manual braking's formula diesel oil three-wheeled vehicle of 7YP-850B is example).

If represent that with E the power arm of foot pedal lever represents the resistance arm of foot pedal lever with e

The power arm that represents side lever with S represents the resistance arm of side lever with s

The power arm that represents rear turbine/lever with C represents the resistance arm of rear turbine/lever with c

With D indication device magnification factor

So: $\frac{E}{2e}\&times;\frac{S}{s}\&times;\frac{C}{c}=D$

When the power arm length of rear turbine/lever is: in the time of 83 millimeters, the braking force magnification factor of single trailing wheel is: 23.7

In like manner according to above-mentioned formula, can calculate: when after the power arm length of turbine/lever be: 86 millimeters, 89 millimeters, 94 millimeters, 99 millimeters, 122.68 millimeters, the braking force magnification factor of an independent trailing wheel respectively: 24.6 times, 25.5 times, 26.9 times, 28.3 times, 35 times.When the length of the power arm of rear turbine/lever is greater than 122.68 millimeters, magnification factor will be greater than 35 times, and power effect will be better.

When the actual length of the power arm 5 of the lever on the trailing wheel back-plate of two of left and right is 83 millimeters, (compared with prior art increased by 3 millimeters), the braking force magnification factor of two trailing wheels equals respectively 23.7 times; That is to say, the braking force magnification factor that is positioned at the trailing wheel in left side equals 23.7 times, and the braking force magnification factor that is positioned at the trailing wheel on right side also equals 23.7 times; That is: the resistance being positioned on the rear turbine/lever (an independent last lever) in left side equals 23.7 divided by the business of the power gained on the lever (first lever) of chaufeur underfooting, is positioned at resistance on the rear turbine/lever (an independent last lever) on right side and also equals 23.7 divided by the business of the power gained on the lever (first lever) of chaufeur underfooting; In other words: being exactly resistance on an independent last lever equals 23.7 divided by the business of the power gained on first lever.

23.7-22.89=0.81 doubly

That is: the power arm of rear turbine/lever increases by 3 millimeters, and an independent trailing wheel can increase the braking force of 0.81 times.

With spring balance or the rough test of force indicator, when emergency braking, the application force that the instep of chaufeur acts on brake pedal is approximately 65 kilograms of left and right.65 * 0.81=52.65 kilogram, according to rough estimation: about 3 millimeter of the every growth of power arm in trailing wheel regulations and parameters, can increase the braking force of about 52.65 kilograms of left and right.At the crucial moment of emergency braking, the braking force of 52.65 kilograms may play vital effect, probably avoids a traffic accident.

(embodiment has taked to increase the scheme of the power arm of turbine/lever afterwards simultaneously above, in fact, also can take only to increase one of them scheme of the power arm of turbine/lever afterwards.Only increase the power arm of turbine/lever after, make the braking force of two trailing wheels unequal, that is: asymmetric.But experiment shows: three-wheeled vehicle, in the asymmetric situation of braking force of two trailing wheels, can not occur to break away and deviation phenomenon.Only there is the locking of a wheel energy, although braking effect is better while being unable to catch up with the locking simultaneously of two wheels, also improved to a certain extent braking effect).

Fig. 3 can reference, as second embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By being positioned at each lever on two trailing wheel back-plates (that is: rear turbine/lever, this lever is comprised of power arm 5 and camshaft 6), lever that is positioned at chaufeur underfooting (that is: foot pedal lever, this lever consists of a power arm and two resistance arms, that is: by one, stepping on arm 1 and two treadles 2 and axle 11 forms), two treadles 2 on this foot pedal lever are connected and (in the middle part of these two pull bars, connect respectively two levers with power arm 5 use pull bars on turbine/lever after two respectively, we are called side lever this lever, this side lever is comprised of power arm 13 and resistance arm 14 and fulcrum 11).This embodiment takes to increase the scheme of the power arm [axle center of axle 11 (axle 11 on foot pedal lever) is to the straight-line distance between the geometric center point of the plate face of pedal 10] of the lever of chaufeur underfooting.And take this power arm to increase the scheme (that is: the actual length of the power arm of this foot pedal lever is: 311.62 millimeters) of 11.62 millimeters

According to formula above:

$\frac{E}{2e}\&times;\frac{S}{s}\&times;\frac{C}{c}=D$

When the length of the power arm of foot pedal lever is 311.62 millimeters, the braking force magnification factor of single trailing wheel is: 23.7

Magnification factor equals 23.7 times, in fact be exactly after independent one the resistance on turbine/lever divided by the business of the power gained on the lever of chaufeur underfooting, equal 23.7, that is to say: the resistance on an independent last lever equals 23.7 (lower with) divided by the business of the power gained on first lever.

In like manner according to above-mentioned formula, can calculate: when the power arm length of the lever of chaufeur underfooting is: 323.45 millimeters, 335.29 millimeters, 353.69 millimeters, 372 millimeters, 459 millimeters, the braking force magnification factor of an independent trailing wheel is respectively: 24.6 times, 25.5 times, 26.9 times, 28.3 times, 35 times.

When the power arm length of foot pedal lever is greater than 459 millimeters, magnification factor will be greater than 35 times, and braking effect will be better.

Fig. 3 can reference, as the 3rd embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By being positioned at each lever on two trailing wheel back-plates (that is: rear turbine/lever, this lever is comprised of power arm 5 and camshaft 6), lever that is positioned at chaufeur underfooting (that is: foot pedal lever, this lever consists of a power arm and two resistance arms, that is: by one, stepping on arm 1 and two treadles 2 and axle 11 forms), two resistance arms (treadle 2) on this foot pedal lever are connected with the power arm 5 use pull bars on turbine/lever after two respectively, connect respectively two lever side levers (being comprised of power arm 13 and resistance arm 14) in the middle part of these two pull bars.This embodiment is taked the scheme that the power arm of two side levers 13 is increased simultaneously, and takes to increase the scheme (actual length of the power arm 13 of this side lever is 83 millimeters) of 3 millimeters.

According to formula above: $\frac{E}{2e}\&times;\frac{S}{s}\&times;\frac{C}{c}=D$

When the length of the power arm of side lever is: in the time of 83 millimeters, the braking force magnification factor of single trailing wheel is: 23.7

In like manner the above-mentioned formula of root Ju can be calculated: when the length of the power arm of side lever is: 86.15 millimeters, 89.3 millimeters, 94.2 millimeters, 99.11 millimeters, 122.57 millimeters, the braking force magnification factor of an independent trailing wheel is respectively: 24.6 times, 25.5 times, 26.9 times, 28.3 times, 35 times.

When the length of the power arm of side lever is greater than 122.57 millimeters, magnification factor will be greater than 35 times, and braking effect is better.

Fig. 1 can be used as reference, shows the 4th embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By each lever (turbine/lever being positioned on two trailing wheel back-plates, this lever is comprised of power arm 5 and camshaft 6), lever that is positioned at chaufeur underfooting (that is: foot pedal lever, this lever forms by stepping on arm 1, treadle 2 and axle 11), below this foot pedal lever (or being connected with this foot pedal lever) have a steering lever, this steering lever is comprised of swing arm 7, fork 8 and axle 11, is provided with the middle lever of two resistance arms (rocking bar 4) and a power arm (rocking arm 3) between this steering lever and rear turbine/lever; Between resistance arm on foot pedal lever (treadle 2) and power arm (swing arm 7) on steering lever, with pull bar 19, be connected; Between resistance arm on steering lever (fork 8) and power arm (rocking arm 3) on middle lever, with pull bar 20, be connected; Two resistance arms (rocking bar 4) on middle lever are connected with pull bar 21, pull bar 22 respectively with the power arm 5 on turbine/lever after two.(this embodiment take the model of producing Zhucheng, Shandong Province Futian Leiao International Heavy Industry Co., Ltd in February, 2013 as: manual braking's formula diesel oil three-wheeled vehicle of 7YP-1475D2B is example), this embodiment takes to increase the scheme of the power arm on turbine/lever 5 after two simultaneously, and takes these two power arms 5 to increase the scheme (actual length of this power arm is: 123.77 millimeters) of 28.77 millimeters.

If represent that with E the power arm of foot pedal lever represents the resistance arm of foot pedal lever with e

The power arm that represents steering lever with Z represents the resistance arm of steering lever with z

In the middle of representing with R, the power arm of lever represents the resistance arm of middle lever with r

The power arm that represents rear turbine/lever with C represents the resistance arm of rear turbine/lever with c

The braking force magnification factor that represents an independent trailing wheel with D

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

When the length of the power arm of rear turbine/lever is: in the time of 123.77 millimeters, the braking force magnification factor of single trailing wheel is: 23.7

In like manner according to formula above, can calculate: when magnification factor is: 24.6,25.5,26.9,28.3,35, the required length of power arm of rear turbine/lever.

When magnification factor is greater than 35 times, braking effect is better.

Fig. 1 can reference, as the 5th embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By each lever (being formed by power arm 5, camshaft 6) being positioned on two trailing wheel back-plates, a lever that is positioned at chaufeur underfooting, (this foot pedal lever forms by stepping on arm 1, treadle 2 and axle 11), the steering lever (being formed by swing arm 7 and fork 8) of be connected with this foot pedal lever the below of this foot pedal lever (or be positioned at); Lever (being formed by a rocking arm 3 and two rocking bars 4) be provided with one between this steering lever and rear turbine/lever in the middle of; Two resistance arms (rocking bar 4) on this centre lever are connected with power arm 5 use pull bars 21, pull bar 22 on turbine/lever after two respectively; Between resistance arm on foot pedal lever (treadle 2) and power arm (swing arm 7) on steering lever, with pull bar 19, be connected; Between resistance arm on steering lever (fork 8) and power arm (swing arm 3) on middle lever, with pull bar 20, be connected.This embodiment takes to increase power arm on foot pedal lever, and (this power arm refers to: from the axle center of this lever to the straight-line distance of the geometric center point of the plate face of pedal, scheme down together), and take to increase the scheme (actual length of the power arm of this foot pedal lever is: 306 millimeters) of 71 millimeters.

According to formula above: $\frac{E}{e}\&times;\frac{Z}{z}\&times;\frac{R}{2r}\&times;\frac{C}{c}=D$

The length of the power arm on foot pedal lever is: in the time of 306 millimeters, the braking force magnification factor of single trailing wheel is: 23.7

In like manner according to formula above, can calculate: when magnification factor is: 24.6,25.5,26.9,28.3,35, the required length of power arm of foot pedal lever.

When magnification factor is greater than 35 times, braking effect is better.

Fig. 1 can reference, as the 6th embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By each lever (being formed by power arm 5 and camshaft 6) being positioned on two trailing wheel back-plates, a lever (this foot pedal lever forms by stepping on arm 1, treadle 2 and axle 11) that is positioned at chaufeur underfooting, the steering lever (being formed by swing arm 7 and fork 8) of one be connected with this foot pedal lever the below of this foot pedal lever (or be positioned at), between this steering lever and rear turbine/lever, be provided with one in the middle of lever (being formed by a rocking arm 3 and two rocking bars 4); Two resistance arms (rocking bar 4) on this centre lever are connected with power arm 5 use pull bars 21, pull bar 22 on turbine/lever after two respectively; Between the power arm (swing arm 7) of the resistance arm on foot pedal lever (treadle 2) and steering lever, with pull bar 19, be connected; Between resistance arm on steering lever (fork 8) and power arm (rocking arm 3) on middle lever, with pull bar 20, be connected.This embodiment takes to increase the scheme of the power arm on steering lever, and takes this power arm to increase the scheme (actual length of this power arm is: 114.7 millimeters) of 26.7 millimeters.

According to descending formula above: $\frac{E}{e}\&times;\frac{Z}{z}\&times;\frac{R}{2r}\&times;\frac{C}{c}=D$

When the length of the power arm of steering lever is: in the time of 114.7 millimeters, the braking force magnification factor of single trailing wheel is: 23.7 times.

In like manner according to formula above, can calculate: when magnification factor is: 24.6,25.5,26.9,28.3,35, the required length of power arm on steering lever.

When magnification factor is greater than 35 times, braking effect is better.

Fig. 1 can reference, as the 7th embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises five levers.By each lever (being formed by power arm 5 and camshaft 6) being positioned on two trailing wheel back-plates, lever that is positioned at chaufeur underfooting (this foot pedal lever by step on arm 1, treadle 2 forms), the steering lever (being formed by swing arm 7 and fork 8) of one be connected with this foot pedal lever the below of this foot pedal lever (or be positioned at), between this steering lever and rear turbine/lever, be provided with one in the middle of lever (being formed by a rocking arm 3 and two rocking bars 4); Two resistance arms (rocking bar 4) on this centre lever are connected with power arm 5 use pull bars 21, pull bar 22 on turbine/lever after two respectively, between resistance arm on foot pedal lever (treadle 2) and power arm (swing arm 7) on steering lever, with pull bar 19, be connected, between the resistance arm on steering lever (fork 8) and power arm (rocking arm 3) on middle lever, with pull bar 20, be connected.This embodiment takes to increase the scheme of the power arm on middle lever, and takes this power arm to increase the scheme (actual length of this centre lever is: 130.35 millimeters) of 30.35 millimeters.

According to formula above: $\frac{E}{e}\&times;\frac{Z}{z}\&times;\frac{R}{2r}\&times;\frac{C}{c}=D$

The length of the power arm on middle lever is: in the time of 130.35 millimeters, the braking force magnification factor of single trailing wheel is: 23.7

In like manner according to formula above, can calculate: when magnification factor is: 24.6,25.5,26.9,28.3,35 time, the required length of power arm on middle lever.

When magnification factor is greater than 35 times, braking effect is better.

The 8th embodiment of the rear wheel travelling crane braking device of manual braking's formula diesel oil three-wheeled vehicle of the present invention (this embodiment is not drawn accompanying drawing specially, can steering lever be saved with reference to figure 1, roughly can be used as the diagram of present embodiment).It comprises four levers.By each lever (being formed by power arm and camshaft) being positioned on two trailing wheel back-plates, lever that is positioned at chaufeur underfooting (this foot pedal lever by step on arm and treadle forms), between this foot pedal lever and rear turbine/lever, be provided with one in the middle of lever (being formed by a rocking arm and two rocking bars); Two resistance arms (rocking bar) on this centre lever are connected with pull bar with the power arm on turbine/lever after two respectively, between the resistance arm on foot pedal lever (treadle) and power arm (rocking arm) on middle lever, with pull bar, are connected.

(this embodiment, with respect to 4th～7 embodiments, is equivalent to save steering lever).

Formula in 4th～7 embodiments of reference::

Want to make D to equal 23.7 times, the power arm of each lever and resistance arm can have a plurality of numerical value.

In like manner want D is equaled: 24.6,25.5,26.9,28.3,35 times, the power arm of each lever and resistance arm can have a plurality of numerical value.

When magnification factor is greater than 35 times, that is: the larger braking effect of power arm is better.

The 9th embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention (this embodiment is not drawn accompanying drawing specially, can side lever be saved with reference to figure 3, roughly can be used as the diagram of present embodiment).It comprises three levers.Be positioned at each lever (being formed by power arm and camshaft) on two trailing wheel back-plates, be positioned at a lever (this foot pedal lever steps on arm by and two treadles form) of chaufeur underfooting; Two resistance arms (treadle) on this foot pedal lever are connected with pull bar with the power arm on turbine/lever after two respectively.

(this embodiment, with respect to 1st～3 embodiments, is equivalent to save two side levers)

With reference to the formula in 1st～3 embodiments:

Want to make D to equal 23.7 times, power arm and resistance arm on foot pedal lever and rear turbine/lever can have a plurality of numerical value.

In like manner want D is equaled: 24.6,25.5,26.9,28.3,35 times, the power arm of above-mentioned two levers and resistance arm can have a plurality of numerical value.

When magnification factor is greater than 35 times, that is: the larger good braking effect of power arm.

Fig. 4 shows the tenth embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises two levers.A near hand operation lever being positioned at the chaufeur right hand, this hand operation lever consists of control arm 1, joystick 2 and axle 11; A lever being positioned on trailing wheel back-plate, we are also called rear turbine/lever it.The rear turbine/lever of addressing in this rear turbine/lever and above embodiment is different, this rear turbine/lever consists of two resistance arms (two camshafts 6) and power arm 5 that (this rear turbine/lever is actually with an axle 11 two camshafts 6 are coupled together, make two camshafts 6 in coaxial state, a power arm 5 is set between two camshafts 6 again, thereby turbine/lever is combined after making two on two trailing wheels, form one after turbine/lever); Between the resistance arm (joystick 2) of hand operation lever and the power arm 5 of rear turbine/lever, with pull bar 20, couple together.

(above-mentioned hand operation lever also can be called first lever)

If represent that with E the power arm of hand operation lever represents the resistance arm of hand operation lever with e

The power arm that represents rear turbine/lever with C represents the resistance arm of rear turbine/lever with c

The braking force magnification factor that represents single trailing wheel with D

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

From above formula, can find out: want to make magnification factor D to equal 23.7, power arm and resistance arm on hand operation lever and rear turbine/lever can have a plurality of numerical value.

In like manner want D is equaled: 24.6,25.5,26.9,28.3,35 times time, the power arm of above-mentioned two levers and resistance arm can have a plurality of numerical value.

When magnification factor is greater than 35 times, that is: the larger braking effect of power arm is better.

The 11 embodiment (not shown) of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises two levers.Lever that is positioned at chaufeur underfooting (that is: foot pedal lever, this foot pedal lever is by stepping on arm and treadle forms), one is positioned at the lever on drg, and the lever on this drg is to consist of camshaft and power arm equally.But different: this drg is arranged on the belt pulley of power-transfer clutch outside, this drg is coaxial with this belt pulley, the structure of this drg and the structure of car side brake are roughly the same (is divided into rotating element and retaining element equally, retaining element is divided into brake shoe brake cheek and camshaft, brake shoe brake cheek and camshaft are fixed on back-plate, and back-plate is connected with large of car body, and rotating element is equivalent to brake wheel, be connected with belt pulley, and coaxial with belt pulley).Between resistance arm on foot pedal lever (treadle) and power arm on drg, with bracing wire, be connected

(lever on the above-mentioned drg that is arranged in power drive system also can be called last lever).

Reference formula above::

Want to make magnification factor D to equal 23.7 times, power arm and resistance arm on above-mentioned two levers can have a plurality of numerical value.

Equally, want to make magnification factor to equal: 24.6,25.5,26.9,28.3,35 times time, the power arm of above-mentioned two levers and resistance arm can have a plurality of numerical value.

Drg in embodiment has been arranged on the belt pulley of power-transfer clutch outside above, in fact, this drg can also be arranged on other positions in power drive system, (as: on the belt pulley of driving engine outside, for another example: in belt-driving, set up a belt pulley, this drg and the belt pulley of setting up are coaxial etc. again).

Because the rotating speed of belt pulley is far longer than the rotating speed of wheel, so, in the situation that braking force is identical, drg is arranged on to the braking effect that braking effect in power drive system will be far longer than car side brake.

In addition, two car side brakes are become to a centre brake, overcome two car side brakes and braking force has respectively been got to the shortcoming of half, a centre brake is set and compares with two car side brakes, itself braking force is doubled, (being the twice of car side brake).

The 12 embodiment (not shown) of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.It comprises three levers.A near hand operation lever being positioned at the chaufeur right hand, this hand operation lever consists of control arm, joystick and axle; Be positioned at each lever on two trailing wheel back-plates, by camshaft, power arm, formed.After the resistance arm (joystick) of hand operation lever and two between the power arm of turbine/lever, with two bracing wires, connect respectively that (resistance arm of hand operation lever connects two bracing wires simultaneously, is in fact equivalent to this hand operation lever and has two resistance arms.That is: connect a bracing wire and the relation that is connected two bracing wires, be exactly with joint efforts with the relation of component).

(near the above-mentioned hand operation lever of the chaufeur right hand that is positioned at also can be called first lever)

Reference formula above:

From above formula, can find out: want to make magnification factor D to equal 23.7 times, above-mentioned hand operation lever and the power arm of rear turbine/lever and resistance arm can have a plurality of numerical value.

Equally, want to make magnification factor to equal: 24.6,25.5,26.9,28.3,35 times time, the power arm of hand operation lever and rear turbine/lever and resistance arm can have a plurality of numerical value.

Fig. 5 shows the 13 embodiment of the trailing wheel manpower service braking device of diesel oil three-wheeled vehicle of the present invention.This embodiment is taked the structure of a lever.Its structure is roughly as follows:

Long-armed 40 (this length of long-armed 40 is approximately 2 meters of left and right) are set, this rear end of long-armed 40 is flexibly connected a pivot shaft 45, this pivot shaft 45 is equivalent to the fulcrum of lever, this pivot shaft 45 is connected with car body, long-armed 40 at brake wheel 41, (this brake wheel 41 is arranged on the belt pulley of power-transfer clutch above rear sedan-chair outside for this, and coaxial with belt pulley) top pass through, and forwards extend, with the general shape of vehicle body, extend under the right crus of diaphragm of chaufeur or neighbouring (long-armed 40 front end is provided with pedal 46 always, this pedal 46 is roughly positioned at the underfooting of chaufeur), at this pivot shaft 45, be provided with friction lining 47 in the position of about 5 centimetres of left and right forward, this friction lining 47 is fixed on long-armed 40, near this front end of long-armed 40, be provided with spring (spring not shown in the figures), the height up and down of this spring adjustable long-armed 40, make the gap of brake wheel 41 and friction lining 47 in correct position.When need are braked, chaufeur the stepping on of lower long-armed 40 front end that tramp with one's feet pulls 46, and friction lining 47 rubs mutually with brake wheel 41, produces friction force, thereby plays brake action.So just formed the Manual braking device that only has a lever.The power arm of this lever is exactly long-armed 40 length, is approximately: 200 centimetres; The resistance arm of this lever be exactly the geometric center point of friction lining 47 to the straight-line distance of pivot shaft 45, be approximately: 5 centimetres; Doubly, that is: the braking force magnification factor of this brake equipment is 40 times to 200 ÷ 5=40.In addition, because this brake wheel 41 is links in power drive system, its rotating speed is far longer than the rotating speed of wheel, so the braking force acting on rear wheel will be far longer than 40 times.The braking effect of this brake equipment is very good, and [brake wheel 41 in power drive system and the relation of wheel, be exactly in fact a wheel shaft, and wheel shaft is the distortion of lever.According to rough measurement, the rotating speed of brake wheel 41 (or belt pulley) is at least 3 times of left and right or higher (when driving at moderate speed of vehicle wheel rotational speed, can reach 4 times of left and right, 5 times of left and right are even higher), 3 * 40=120 doubly, 4 * 40=160 doubly, doubly, like this, the braking force magnification factor acting on wheel is exactly 120 times, 160 times, 200 times even higher to 5 * 40=200].

In embodiment, power arm has been taked 200 centimetres above, and resistance arm has been taked the scheme of 5 centimetres.200 ÷ 5=40 doubly.In fact, can take to regulate the means of resistance arm length, also can take to regulate the means of power arm length, braking force magnification factor is equaled respectively: 23.7,24.6,25.5,26.9,28.3,35 times.

[in addition, also have the embodiment (not shown) of a lever of a kind of employing, same, its braking effect is very good.Its structure is roughly as follows: one long-armed (the about 2 meters of left and right of this long-armed length) are set, this long-armed rear end is flexibly connected a back-up block, this back-up block is equivalent to fulcrum, this back-up block is connected with car body, this is long-armed passes through above rear wheel, and forwards extend, with the general shape of vehicle body, extend under the right crus of diaphragm of chaufeur always or neighbouringly (at this long-armed front end, be provided with pedal, this pedal is roughly positioned at the underfooting of chaufeur), at this back-up block, be provided with friction lining in the position of about 5 centimetres of left and right forward, this friction lining be fixed on long-armed on, near this long-armed front end, be provided with spring, the height up and down that this spring is can spring section long-armed, make the crown of rear wheel and the gap of friction lining in suitable position.When need are braked, chaufeur is stepped on the pedal of long-armed front end, and friction lining rubs mutually with the crown of rear wheel, produces friction force, thereby plays brake action.Like this, just formed the Manual braking device that only has a lever, the power arm of this lever is exactly long-armed length, is approximately: 200 centimetres: the resistance arm of this lever be exactly the geometric center point of friction lining to the straight-line distance of back-up block, be approximately: 5 centimetres; 200 ÷ 5=40 doubly (like thisly long-armedly arrange one, that is to say, be provided with brake equipment and can play brake action on an independent trailing wheel.Experiment shows, while only having a trailing wheel to have braking mark in two trailing wheels of three-wheeled vehicle, when another trailing wheel does not brake, can not occur to break away and deviation phenomenon.)。The braking force magnification factor of this brake equipment is approximately 40 times, and this braking force acts on crown place, so braking effect is very good.Equally, can, by regulating the length of power arm or resistance arm, make braking force magnification factor for equaling respectively: 23.7,24.6,25.5,26.9,28.3,35 times.The difference of this embodiment and embodiment above is only substantially: the friction lining in this embodiment and wheel interact, and produces braking force; Friction lining in embodiment above and brake wheel interact, and produce braking force, and other structures are roughly the same].

[the crown of cover tire refers to the maximum gauge of wheel, is called for short wheel diameter.In fact the relation of wheel and brake wheel is exactly a wheel shaft, and wheel shaft is the distortion of lever.In braking procedure, braking force or cry friction force be exactly wheel shaft lever power: the radius of brake wheel be exactly wheel shaft lever power arm (internal diameter of radius * 2=brake wheel of brake wheel); Braking force or friction force are acted on to crown place, with regard to being equivalent to, the internal diameter of brake wheel is increased to the degree equating with wheel diameter.The internal diameter that is arranged on the brake wheel on the trailing wheel of manual braking's formula diesel oil three-wheeled vehicle is generally 25 centimetres, and the diameter of rear wheel is generally 75 centimetres of left and right, and doubly, that is: the power arm that is equivalent to take turns shaft lever has increased 3 times of left and right to 75 ÷ 25=3; 40 * 3=120 doubly, that is to say: by Braking, at crown place, braking force magnification factor is approximately 120 times of left and right].

[theoretical instruction and experiment all show: f=μ N, and the f in formula represents force of sliding friction, and N represents the positive pressure of two objects, and μ represents coefficient of sliding resistance, and the size of μ is relevant with the material of the two articles being in contact with one another.Experiment shows: the friction coefficient between elastomeric material (tire is made with elastomeric material) and friction lining will be far longer than the friction coefficient between cast iron materials (brake wheel cylinder iron material is made) and friction lining.So, braking force is applied to the crown place of the cover tire of wheel, the actual braking force magnification factor obtaining will be far longer than 120 times].

(when brake equipment is only a lever, this lever both can be called first lever, also can be called last lever).

The 14 embodiment (not shown): this embodiment is of crucial importance.Generally, only taked this embodiment, could support the use better with " lever brake shoe ".The scheme of this embodiment is: a kind of trailing wheel manpower service brake structure of diesel oil three-wheeled vehicle, it at least comprises two levers, between each lever, power arm is connected with resistance arm, and the power arm on first lever is taked: 261 millimeters, the resistance arm of first lever is taked: 45 millimeters; Doubly, that is: the power arm on first lever equals 5.8 divided by the business of the independent resistance arm gained on this first lever to 261 ÷ 45=5.8.When power arm is greater than 261 millimeters, its business is greater than 5.8.This business is larger, and what coordinate with " lever brake shoe " is better.

Equally, can, by the proportionate relationship of motivation of adjustment arm and resistance arm, make above-mentioned ratio (business) equal 6.2,7; Above-mentioned ratio can also be determined: in the scope of 5.8≤business < 6.2,6.2≤business < 7; Even can also make this ratio be greater than 7.

In 1st～3 embodiments, can also set up one or more lever.The lever of setting up resembles the lever of side and sets up on the pull bar between rear turbine/lever and foot pedal lever; Be positioned at that the number of the side lever on the pull bar of vehicle body both sides can equate (symmetrical), can be also unequal (asymmetric).That is to say: on the pull bar of the vehicle body both sides between foot pedal lever and rear turbine/lever, can set up respectively one or more lever (being equivalent to has respectively a plurality of sides lever in vehicle body both sides).

In 4th～7 embodiments, can also set up one or more lever.The lever of setting up can be set up on the pull bar between foot pedal lever and steering lever; Also can set up on the pull bar between steering lever and middle lever (as steering lever, be equivalent to have a plurality of steering levers), can also set up that (one or more lever can be set up respectively in vehicle body both sides on the pull bar of the both sides between rear turbine/lever and middle lever, the number of the lever that vehicle body both sides are set up can equate, can be also unequal).Can also set up in other positions.

In brake equipment, setting up lever is a very easy thing, under technical personnel can be at an easy rate, implement that [any place (a bit) at pull bar is blocked neatly, in two end points that disconnect at pull bar, one of them end points is connected with power arm, another end points is wherein connected with resistance arm, again axle (fulcrum) is fixed up, like this, has just set up a new lever].

Set up one or more lever above, still, be made as suitablely to reduce as far as possible, because lever is more, the friction force between axle and axle will be larger, and waste of power will be larger.

In 1st～7 embodiments, all take the scheme of motive force of growth arm, in fact can also take to reduce the scheme of resistance arm, but be advisable to increase the scheme of power arm.

Above in each embodiment, most pull bars that adopt connect, in fact, every employing pull bar connects, and all pull bar can be exchanged into bracing wire (drag-line); Every employing bracing wire connects, and all bracing wire can be exchanged into pull bar.

Chaufeur applies the lever of application force, and we are called first lever it.From embodiment above, can find out: first lever can be the foot pedal lever that is positioned at chaufeur underfooting, can be to be also positioned near the hand operation lever of chaufeur; Apart from first lever lever farthest, we are called last lever it.From embodiment above, can find out: last lever can be the lever trailing wheel back-plate, also can be arranged on the lever on the drg in power drive system.

The present invention should make every effort to briefly as far as possible, should not be too loaded down with trivial details, exemplified several embodiment above, and these several embodiment are only a drop in the ocean, and the present invention is not limited to several embodiment above, and this suction can not be by ever-changing embodiment row sieve one by one.In fact, lever is remapped, rearranges, again arranges in pairs or groups, reconnects, rearranged combination, redesigns is the very simple piece of cake of part, and people can rearrange neatly easily combination or design various Protean embodiment (that is: Protean technical scheme).Essence of the present invention is that the braking force magnification factor of whole device meets or exceeds 23.7 times (the braking force magnification factor that is strictly speaking an independent trailing wheel meets or exceeds 23.7 times).

At present, in the rear wheel travelling crane braking device of manual braking's formula diesel oil three-wheeled vehicle, be only that the power arm on rear turbine/lever is parts.In fact, also can at an easy rate the power arm on other each levers be designed to parts (for example: Luo connects), first the parts that are designed to be sold to customer or flow to city's field boundary, and then being bought or assembled by customer, we are called this sales mode first to disassemble rear assembling.

Every sales mode of taking first to disassemble rear assembling, after by customer's re-assemble, the braking force magnification factor of its whole brake equipment meets or exceeds numerical value of the present invention, within just should falling into scope of the present invention.

About manual braking: the manual braking that the present invention is alleged, referring to this brake system is mainly the principle according to lever force-saving, is mainly by lever amplification or transmits braking force, its braking energy source is mainly human isometric strength.For example: in the brake system of automobile, although it also comprises a lever (foot pedal lever of chaufeur underfooting), this lever has been mainly on-off action, it mainly utilizes pressure gas to amplify or transmits braking force, its braking energy source is mainly from the pressure gas of driving engine manufacturing, so it can not be called manual braking.

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

About maximum power arm: for concrete manual braking's formula diesel oil three-wheeled vehicle, the numerical value of the maximum power arm of each lever is objective definite, it is outwardness, it disobeys anyone subjective will for shifting, it disobeys any method of measurement for shifting, and also disobeys method of measurement of the present invention for shifting.In other words: if the concrete method of measurement of the not shown maximum power arm of the present invention or method of measurement of the present invention lack correctness, so, the numerical value of maximum power arm is always objective, no matter the power arm 5 of rear turbine/lever is, how the shape of the power arm of stepping on arm 1 and other levers of foot pedal lever changes or crooked, should seek truth from facts ground with the outwardness (or unified regulation of science) of science, be as the criterion.

About supporting the use: need lay special stress on to point out here: the present invention is alleged supports the use to refer to support the use and be advisable." lever brake shoe " (201020557185.3 or 201010502972.2) are respectively two independently patented technology or products with the present invention." lever brake shoe " can be used in conjunction with the rear wheel travelling crane braking device of manual braking's formula diesel oil three-wheeled vehicle of the present invention, also can be used in conjunction with the rear wheel travelling crane braking device of manual braking's formula diesel oil three-wheeled vehicle of the prior art.The more smart rent land of manufacturing when brake shoe brake cheek, brake equipment and each parts or gap are hour, " lever brake shoe " can be used in combination with the rear wheel travelling crane braking device of manual braking's formula diesel oil three-wheeled vehicle of the prior art completely, and reaches desirable braking effect.Above-mentioned both compare: be only that better effects if, better and effect are distinguished preferably, rather than can coordinate and the difference that can not coordinate; The difference of superiority and inferiority, rather than the difference of right and wrong.

About one of braking force magnification factor of trailing wheel:

Magnification factor of the present invention, all refers to theoretic magnification factor, rather than refers to actual magnification factor (not referring to spring balance or the measured magnification factor out of other force indicators).Because there is in practice the existence of friction force, a plurality of levers, in the process of transfer function power, have very large energy consumption and loss.So magnification factor should be according to the structure of lever, the length of power arm and resistance arm, is as the criterion to measure accurately with theoretical calculating.On the other hand; The power that the present invention is alleged and resistance, all refer to power and resistance in lever " five elements ".Power and resistance in lever " five elements " all refer to perfect condition, that is: the energy consumption that fulcrum produces is ignored.

About two of the braking force magnification factor of trailing wheel:

Essence of the present invention is that the braking force magnification factor of trailing wheel is larger, and specific embodiment can be Protean.Every lever is rearranged, remaps, again arranges in pairs or groups, rearranged combination, reconnects, redesigns, when the inapplicable foregoing formula of calculating of the braking force magnification factor of whole device, so, the braking force magnification factor of whole device is answered lever ground of a lever, is calculated length by length, every through calculating length by length, when the braking force magnification factor of whole device meets or exceeds numerical value of the present invention, within just should falling into scope of the present invention.

Claims (10)

1. the trailing wheel manpower service braking device of a diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 23.7≤business < 24.6.

2. the trailing wheel manpower service braking device of a diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 24.6≤business < 25.5.

3. the trailing wheel manpower service braking device of a diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 25.5≤business < 26.9.

4. the trailing wheel manpower service braking device of a diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 26.9≤business < 28.3.

5. the trailing wheel manpower service braking device of a diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: make in theory resistance on an independent last lever divided by the business of the power gained on first lever be: 28.3≤business < 35.

6. the trailing wheel manpower service braking device of a diesel oil three-wheeled vehicle, it at least comprises a lever, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: make in theory resistance on an independent last lever divided by business >=35 of the power gained on first lever.

7. according to claim 1, 2, 3, 4, the trailing wheel manpower service braking device of the diesel oil three-wheeled vehicle described in 5 or 6, it is characterized in that: described brake equipment is at least comprising two levers, a near lever chaufeur, a lever being positioned on trailing wheel back-plate, between these two levers, power arm is connected with resistance arm successively head and the tail, lever on described trailing wheel back-plate is provided with two camshafts, these two camshafts lay respectively on two trailing wheel back-plates, these two camshafts are connected by an axle, make two camshafts in coaxial state, on the axle between these two camshafts, be provided with a power arm.

8. the trailing wheel manpower service brake of a diesel oil three-wheeled vehicle is constructed, it at least comprises two levers, between each lever, power arm and resistance arm are linked in sequence, and it is characterized in that: the power arm that makes in theory first lever divided by the business of the independent resistance arm gained on this first lever is: 5.8≤business < 6.2.

9. the trailing wheel manpower service brake of a diesel oil three-wheeled vehicle is constructed, it at least comprises two levers, between each lever, power arm and resistance arm are linked in sequence, it is characterized in that, the power arm that makes in theory first lever divided by the business of the independent resistance arm gained on this first lever is: 6.2≤business < 7.

10. the trailing wheel manpower service brake of a diesel oil three-wheeled vehicle is constructed, it at least comprises two levers, between each lever, power arm and resistance arm are linked in sequence, it holds to levy, and makes in theory the power arm of first lever divided by business >=7 of the independent resistance arm gained on this first lever.