CN200999028Y - Automobile electromagnetic damping device - Google Patents

Abstract

A car electric-magnetic cushioning device used in automobile industry and communications & transportation system; This device can produce continually varying electric-magnetic repulsion between the barrelled motor vehicles so as to effectively buffer the velocity contrast between the vehicles. Therefore, both collision and rear-end accident could be avoided. The electrical connection is made one by one among the power supply, the optical transceiver and the outer coil of the double-layer helix tube. The inner solenoidal inductor of the double-layer helix tube forms the circuit independently, while the inner helix tube is filled with the ferrimagnetism materials with high permeability. Based on the size of the vehicle, the appearance of the double-layer solenoid structure is designed as a rectangular or an oval column with appropriate size. When the speed of a vehicle is higher than that specified as unsafe level, the device could be opened. If the feedback signals are received by the optical transceiver, the entire circuit will be turned on, so that the double-layer solenoid structure produces the electro-magnetic field. In this case, the electric-magnetic repulsion is formed between the vehicles.

Description

The automobile electromagnetic shock absorber

Affiliated technical field

The utility model relates to a kind of automobile electromagnetic shock absorber that is applied to automobile manufacture industry and traffic and transportation system.

Background technology

At present, because car speed is fast on the express highway, reasons such as drag time, distance, the car rear-end collision happens occasionally, and causes great personal casualty.Existing speed reduction device for automobile is drum-type cone friction gear or disc type cone friction gear basically, this speed reduction gearing obtains car when slowing down maximum resistance is wheel and ground-surface force of sliding friction, but, be generally the manipulative capability that guarantees vehicle, the normal automatic anti-lock device (ABS) that uses prevents wheel lockup, prevents that promptly wheel and road surface from producing cliding friction.Therefore,, vehicle is slowed down in the shorter time,, shorten stopping distance even vehicle obtains bigger negative acceleration if can make vehicle when slowing down, obtain a bigger resistance.

Summary of the invention

The problem long in order to overcome the present automobile brake time, that stopping distance is long is to avoid the generation of car rear-end collision, even this device vehicle obtains the additional friction-electromagnetic resistance except that Friction speed-reducing device in moderating process, to reduce the car rear-end collision.

The utility model is that the technical scheme that its technical matters of solution is adopted is: homopolar-repulsion principle and Lenz law according to Law of Biot-Savart-Laplace, Faraday's electromagnetic induction law, magnetic field design this device, double-deck screw actuator and corresponding circuit (being the automobile electromagnetic shock absorber) are installed on vehicle (mainly being car) rear and front end chassis as shown in Figure 1, the double-deck screw actuator of rear and front end should be identical apart from ground-surface height, their size can change slightly according to the shape of car, but, had better not sacrifice solenoidal magnetic-field intensity.This dual solenoidal material should have sufficient intensity, in order to avoid damage, the internal layer screw actuator can move back and forth in outer screw actuator vertically.The action principle of this calutron and circuit thereof are as shown in Figure 2.Like this, make fast in the same way with producing " electromagnetic buffer pad " between the adjacent vehicle of lanes, i.e. the electromagnetic repulsion force that produces of automobile electromagnetic shock absorber reduces the velocity contrast of adjacent vehicle fast by this device, to avoid vehicle to bump against the especially generation of rear-end collision.

Be noted that the realization of this technology and the solution of existing issue, need all or hot-short as much as possible that this device all is installed.

With the car load is research object, and the force analysis of vehicle when slowing down as shown in Figure 3.For the back car, the F that makes a concerted effort of suffered electromagnetic repulsion force and brake control power should satisfy following relation

Ft＝Δmv

Wherein t is a braking time, and Δ mv is that the momentum before and after the car brakeing is poor.

Make two cars in the enough short time, reduce velocity contrast, for the back car, promptly in the enough short time, slow down, this just requires F enough big, so, answer design circuit a and circuit b can produce enough big electric current, so that make inside and outside screw actuator produce stronger magnetic field, make vehicle not near the time just can obtain electromagnetic repulsion force greatly, assurance safety.

The power supply of circuit a uses superpower heavy current power supply, in its loop rheostat can be installed, and regulates the size of intensity of current.Circuit b is designed to low-resistance simple circuit, makes it can produce bigger inducing current under the certain condition of induced electric motive force.

Because there are following relation in the magnetic induction density B of screw actuator end and coil current intensity I

B＝kμnI

The coefficient of k wherein for changing with change in location, μ is the permeability of magnetic medium, n is the interior solenoidal number of turn.

For increasing μ, can in interior screw actuator, add ferrite magnetic material, increase number of turn n simultaneously.

For outer screw actuator, according to Faraday's electromagnetic induction law, because

$\mathrm{\ϵ}=-\frac{\mathrm{d\φ}}{\mathrm{dt}}$

φ＝BS

Wherein ε is outer solenoidal induced electric motive force, and t represents the time, and  is a magnetic flow, and B is a magnetic induction density, and S is interior solenoidal sectional area.

Therefore, solenoidal sectional area S in increasing can increase outer solenoidal induced electric motive force ε, so, can increase the intensity of current of circuit b, to increase the repulsion effect between inside and outside screw actuator.

The beneficial effects of the utility model are: this device produces certain repulsion effect before two cars hit, as long as the electromagnetic repulsion force in two workshops is enough big, just can avoid the back car to knock into the back.And the electromagnetic repulsion force in two workshops is variable forcees, and it dwindles and increase with spacing between two cars, reduces with the increase of two following distances, and therefore, this electromagnetic repulsion force can cushion the velocity contrast of two cars effectively, avoids rear-end collision.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is this calutron installation site figure onboard, and wherein dash area is represented this device.

Fig. 2 is the circuit and the electromagnetic field distribution figure of this calutron, wherein this calutron of (a) front truck rear end, (b) this calutron of back car front end; 1. circuit a, 2. circuit b, 3. optical transceiver, it surveys whether there is other vehicle with optical signal in non-safety distance; I represents outer solenoidal bottom position, and II represents outer position, solenoidal outer end; N, S and N`, S` represent inside and outside solenoidal polarity respectively.

Fig. 3 be front and back two cars near the time force analysis figure, (a) front truck wherein, (b) back car, V represents vehicle heading, F1 ', F1 represent application force and the antagonistic force between front truck rear end internal layer screw actuator, back car front end internal layer screw actuator, application force and antagonistic force between the inside and outside layer screw actuator of the double-deck screw actuator calutron of F2, F2 ' expression back car front end, F3, F3 ' are represented application force and the antagonistic force between the inside and outside layer screw actuator of the double-deck screw actuator calutron in front truck rear end respectively.

Fig. 4 is the inside and outside solenoidal relative length (along the vehicle body direction) of this device and the winding position figure of coil.

The specific embodiment

After the speed of a motor vehicle surpasses certain non-safe speed of a motor vehicle, circuit a enters mode of operation among Fig. 2, now suppose the one in front and one in back same in the same way lanes of two automobiles on the express highway, back vehicle speed is faster than front truck, when the back car near front truck to a non-safety distance in the time, before, the optical transceiver of back car detects the second car in the non-safety distance simultaneously, so circuit a among demand working Fig. 2, at this moment, interior screw actuator produces magnetic field (pole orientation is determined by right-hand rule), the polarity in magnetic field and the direction N of magnetic line of force, S as shown in Figure 2, simultaneously, outer screw actuator is uprushed owing to magnetic flow, according to Faraday's electromagnetic induction law, screw actuator outwards moved to the design-calculated boundary position in outer screw actuator promoted, promptly by position I to position II, simultaneously produce inducing current among the circuit b among Fig. 2, faradic direction is determined according to Lenz law, N` among the magnetic direction of its generation such as Fig. 2, shown in the S`, at this moment, in, outer solenoidal magnetic direction as shown in Figure 2.Because self-induction action, the inducing current among the circuit b can not disappear at short notice.When two cars further near the time because the homopolar-repulsion effect in magnetic field, produce phase repulsive interaction F1 and F1 ' (F1=F1 ') between the interior screw actuator of two cars, at this moment, the interior screw actuator of two cars is pressed, and oppositely moves, and is promptly moved to position I by position II.When counter motion, according to Lenz law, the faradic direction that produces once more among the circuit b is identical with the previous faradic direction that produces, two extreme directions in its magnetic field are constant, still hinder inside and outside two solenoidal relative motions, so screw actuator is subjected to outer separately solenoidal repulsion effect F2 and F3 in two cars, outer screw actuator is subjected to antagonistic force F2 ' and F3 ' simultaneously.Therefore, back car is subjected to size and is the extra electromagnetism inhibition of F1, thereby obtains bigger negative acceleration, is slowed down faster; And front truck is subjected to a thrust forward, obtains certain positive acceleration, quicken to travel forward (uncertain is that the road-holding property of front truck may be affected).

When the intensity of current of circuit a reduced, by the law of electromagnetic induction and Lenz law as can be known, interior screw actuator was promptly got back to position I by position II with getting back to the bottom by the outer end under the solenoidal effect outside.

Therefore, this device produces certain repulsion effect before two cars hit, and especially makes the additional friction-electromagnetic repulsion force of back car acquisition except that friction eceleration power, and the back car is slowed down faster, reduces the velocity contrast of two cars faster, avoids the back car to knock into the back.

Claims (2)

1, a kind of automobile electromagnetic shock absorber comprises a pair of double-deck screw actuator calutron that is installed in front truck rear end and back car front end, it is characterized in that:

Described double-deck screw actuator calutron comprises internal layer screw actuator and circuit and outer screw actuator and circuit thereof;

The internal layer screw actuator is installed in the outer screw actuator, produces magnetic field when the internal layer solenoid circuit is closed, responds to outer screw actuator generation magnetic field and makes internal layer screw actuator crank motion vertically;

The internal layer screw actuator of front truck rear end produces electromagnetic resistance with the solenoidal magnetic field of the internal layer interaction of back car front end, hinders vehicle and meets.

2, automobile electromagnetic shock absorber according to claim 1 is characterized in that comprising in the internal layer solenoid circuit power supply and optical transceiver.

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