CN201009838Y

CN201009838Y - Device for altering applied force state in process of collision of motor vehicle

Info

Publication number: CN201009838Y
Application number: CNU2007201419041U
Authority: CN
Inventors: 凌建军; 黄鹂
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-15
Filing date: 2007-03-15
Publication date: 2008-01-23
Anticipated expiration: 2017-03-15

Abstract

A device for changing the stress during the car crash comprises a front collision-protection bar, a front piston ejector pin, a front piston barrel, a front piston, a front piston return spring, a back piston return spring, a back piston, a back piston barrel, a piston ejector pin, a front reinforcement cantilever, a back reinforcement cantilever, a car frame assembly, a pressure-release assembly, a hydraulic fluid, a piston-type energy dissipater, and a nozzle-type energy dissipater. The front and back reinforcement cantilevers are fixedly connected with the car frame assembly. The front and back piston barrels are fixed on the front and back reinforcement cantilevers. The pressure-release assembly communicates the front piston barrel with the back piston barrel, and is filled with the hydraulic fluid. The piston-type and nozzle-type energy dissipaters are communicated with the pressure-release assembly. The device can change the stress during the car crash and dissipate the crash energy by the piston-type and nozzle-type energy dissipaters.

Description

Change the device of the strained condition in the self-propelled vehicle knockout process

Affiliated technical field

The utility model relates to the active anticollision device of self-propelled vehicle, and particularly a kind of device that changes the strained condition in the self-propelled vehicle knockout process not only is fit to have body-chassis frame construction but also the suitable self-supporting body and the semi-integral body of rigid-frame.

Background technology

Automobile when offering convenience for human live and work, has also caused a large amount of personal casualty and property damage because of road traffic accident since 1886 come out.The accumulated number that car accedent is died from the whole world has surpassed the number of dying from war 20th century, and the whole world causes several hundred million people injured or disable because of mortality from automobile accidents's accumulative total surpasses 3,200 ten thousand people simultaneously till 2006.At present the whole world just in traveling automobile up to 7.2 hundred million, although extensively adopted safety methods such as safety strap, safety air bag, still have every year more than 70 ten thousand people to be killed in an automobile accident, 1000～1,500 ten thousand people are injured or disable, about 5,180 hundred million dollars of the annual economic loss that causes because of road traffic accident in the whole world.Because accounting for the automobile sum of the developing country of population advantage is increasing sharply, the total number of persons that car accedent is died from the whole world every year also will increase, expect global road fatalities in 2010 and will reach 1,000,000 people every year, wounded or disabled number surpasses 1,500 ten thousand, and the economic loss that cause because of road traffic accident global every year will be above 7,000 hundred million dollars.

Although front end bump taken place in traffic accident sometimes or knocked into the back; under the protection of safety strap and safety air bag; there is not personal casualty; but caused automobile impaired; even need overhaul, also may cause rejection of car when serious; bring massive losses for car owner and insurance company, this is the high main reason of automobile insurance.

Motor traffic accidents is when bringing death, permanent disability, the trip of returning people has brought inconvenience, nearly all person for driving a car and rider ran into the situation that causes traffic paralysis because of traffic accident, thereby cause people can't catch up with airplane flight or train, cause that people go to work, meeting and commercial negotiation are late or delay.

Vehicle safety is affecting government, enterprise, insurance company, person for driving a car, rider and household's the heart constantly, and the safety that how to improve automobile is the great scientific research task of pendulum in face of the universe.

At present automobile the safety measure of extensive employing be exactly body-restraining seat belt and safety air bag.The statistics of traffic accidents data show: fastening under the situation of body-restraining seat belt, Effective Vate of Protection can reach 43%～49%; Under the situation of air bag safe in utilization only, Effective Vate of Protection has only 18%; Under the duplicate protection of body-restraining seat belt and safety air bag, can play the better protection effect, but still personal casualty unavoidably occur.It should be noted that safety air bag only just can open when front end clashes into, have no protective effect for such traffic accident of knocking into the back.

In order to protect occupant's safety; general dolly car anterior and afterbody as plastic deformation energy-absorbing energy-dissipating district; making the space invariance shape at occupant place to greatest extent, but still can not guarantee occupant's safety sometimes, this in addition mode is not suitable for cab-over-engine vehicle.

Many for this reason people have carried out big quantity research to automobile collision preventing, up to the present disclose hundreds of patents, and for example ZL200320119672.1 discloses safety lever front extensible automobile automatic collision safety device; ZL00205037.4 discloses the energy-storing automobile anticollision device; ZL03248553.0 discloses automobile head anticollision safety device; ZL96233407.3 discloses automobile collision preventing and has hit damping; ZL02277281.2 discloses the anticollision device that knocks into the back; ZL90105824.6 discloses auto against energy-absorbing damping safety lever.These crashproof measures can be divided into following several mode: utilize the compression spring energy-absorbing; Utilize hydraulic fluid cylinder energy-absorbing; Adopt air bag or tire energy-absorbing; Or in implementation process, these modes are made up.

Why the anticollision device of these patent disclosures can not obtain promotion and application, and its reason is to have following problem:

1) self-propelled vehicle vehicle body in knockout process all is in compressive state, and one side will cause motorcar body to deform and damage, and may cause driver and crew's a space of taking advantage of to be squeezed on the other hand, the critical people's of possibility life security when serious.

2) can only can't consume energy by energy-absorbing, promptly can not consume huge expenditure of energy or part, the problem of bringing thus is may backward acceleration occur after the automobile sharp impacts and make the occupant suffer bigger injury, even the car of being dished out causes personal casualty outward.

3) stressed spring of several whiles or can't absorb huge energy, or can't adapt to little collision.

4) hydraulic damping device is connected safety lever and vehicle beam or crossbeam with spring vibration damper while in-parallel, can not plays a role simultaneously, spring vibration damper can't play a role at all generally speaking, and its reason is that the compressibi1ity of fluid is very little.

5) it is impaired that any bump all can cause automobile, causes car owner and insurance company to bear economic loss.

The utility model content

A kind of device that changes the strained condition in the self-propelled vehicle knockout process, it comprises Guard Assy, secondary piston push rod, secondary piston cylinder, secondary piston, secondary piston retracing spring, primary piston retracing spring, primary piston, primary piston cylinder, primary piston push rod, Grard Assy, preceding reinforcement cantilever, back reinforcement cantilever, frame assembly, connecting pipe assembly, hydraulic fluid; Described forward and backward reinforcement cantilever is captiveed joint with frame assembly, described forward and backward piston cylinder is fixed on the forward and backward reinforcement cantilever; Described connecting pipe assembly is connected forward and backward piston cylinder, and is full of hydraulic fluid; Described forward and backward piston mandril one end links to each other with forward and backward piston respectively, and the other end links to each other with forward and backward crash bar respectively; Described forward and backward piston is in respectively within the forward and backward piston cylinder, and its bottom surface contacts with forward and backward piston reset spring respectively; Described forward and backward piston and forward and backward piston mandril can be movable; It is characterized in that described forward and backward piston cylinder is fixed on the forward and backward reinforcement cantilever that is fixedly linked with frame assembly, described connecting pipe assembly is connected forward and backward piston cylinder, and is full of hydraulic fluid; In the front end knockout process, secondary piston can make the pressure that reaches the hydraulic fluid in the connecting pipe assembly in the forward and backward piston cylinder rise rapidly under the driving of secondary piston push rod and Guard Assy, pressure passes to the bottom surface of primary piston synchronously, and the front by primary piston affacts impact on the back reinforcement cantilever of captiveing joint with frame assembly at last; In the knockout process of rear end, primary piston can make the pressure that reaches the hydraulic fluid in the connecting pipe assembly in the forward and backward piston cylinder rise rapidly under the driving of primary piston push rod and Grard Assy, pressure passes to the bottom surface of secondary piston synchronously, and the front by secondary piston affacts impact on the preceding reinforcement cantilever of captiveing joint with frame assembly at last.

Owing in the front end knockout process, can affact impact on the back reinforcement cantilever of captiveing joint with frame assembly, in the knockout process of rear end, can affact impact on the preceding reinforcement cantilever of captiveing joint with frame assembly, so just, vehicle body is in extended state rather than compressive state, thereby has changed the strained condition of self-propelled vehicle in knockout process.

The utility model also utilizes nozzle type energy dissipating machine and piston type energy dissipation device to come consumed energy, and the utility model not only is fit to have the body-chassis frame construction of rigid-frame, and suitable self-supporting body and semi-integral body.

The utility model is achieved in that

1) at front portion, the rear portion of vehicle body a piston cylinder is installed at least respectively, and piston cylinder is coupled together with connecting pipe, have in the forward and backward piston cylinder can be movable piston, the two ends of forward and backward piston link to each other with piston mandril, spring respectively, the end of front and back piston mandril is equipped with crash bar.

2) on the connecting pipe piston type energy dissipation device is installed.This piston type energy dissipation device comprises high-pressure pipe, piston cylinder, piston, the bar of exerting pressure, plastic deformation part overcoat, plastic deformation part.

3) nozzle type energy dissipating machine also is installed on the connecting pipe.This nozzle type energy dissipating machine comprises high-pressure pipe, fluid cushion chamber, the female pipe of nozzle, nozzle.The female Guan Shangke of nozzle installs a plurality of nozzles (hole), and all fluids that have enough spaces to hold to eject.After bump finished, these fluids can be back in the connecting pipe pipe by nozzle (hole) again.

4) can also adopt connecting pipe to connect between a plurality of connecting pipes, can make the equilibrium of pressure between a plurality of connecting pipes like this.

Description of drawings

Fig. 1 changes the device scheme drawing of the strained condition in the self-propelled vehicle knockout process for the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 1;

Fig. 4 is the scheme drawing of the piston type energy dissipation device of the device of the strained condition in the utility model change self-propelled vehicle knockout process;

Fig. 5 is the scheme drawing of the nozzle type energy dissipating machine of the device of the strained condition in the utility model change self-propelled vehicle knockout process;

Fig. 6 changes the device second embodiment scheme drawing of the strained condition in the self-propelled vehicle knockout process for the utility model;

Fig. 7 changes device the 3rd embodiment scheme drawing of the strained condition in the self-propelled vehicle knockout process for the utility model;

Fig. 8 changes device the 4th embodiment scheme drawing of the strained condition in the self-propelled vehicle knockout process for the utility model.

Wherein Reference numeral is as follows:

Guard Assy 1, secondary piston push rod 2, front bumper 3, secondary piston cylinder 4, secondary piston 5, secondary piston retracing spring 6, first longeron 7, first connecting pipe 8, horizontal connecting pipe 9, piston type energy dissipation device 10, nozzle type energy dissipating machine 11, primary piston retracing spring 12, primary piston 13, primary piston cylinder 14, rear bumper 15, primary piston push rod 16, Grard Assy 17, second connecting pipe 18, second longeron 19, secondary piston cylinder end cap 20, primary piston cylinder end cap 21, the preceding cantilever 22 of strengthening, cantilever 23 is strengthened in the back, preceding connecting pipe 24, back connecting pipe 25, central authorities' connecting pipe 26, the back is connecting pipe 27 laterally, piston depth pressure pipe 101, piston cylinder 102, piston 103, the bar 104 of exerting pressure, plastic deformation part overcoat 105, plastic deformation part 106, nozzle high-pressure pipe 111, fluid cushion chamber 112, the female pipe 113 of nozzle, nozzle 114.

The specific embodiment

First embodiment:

Fig. 1 changes the device scheme drawing of the strained condition in the self-propelled vehicle knockout process for the utility model; Fig. 2 is the A-A cutaway view of Fig. 1; Fig. 3 is the B-B cutaway view of Fig. 1; Fig. 4 is the scheme drawing of the piston type energy dissipation device of the device of the strained condition in the utility model change self-propelled vehicle knockout process; Fig. 5 is the scheme drawing of the nozzle type energy dissipating machine of the device of the strained condition in the utility model change self-propelled vehicle knockout process.

Easy in order to describe, the application only describes the device left part that changes the strained condition in the self-propelled vehicle knockout process, and its right side part is corresponding with the left part symmetry.For the sake of simplicity, omit description to its right side part.

As Fig. 1～shown in Figure 3, the device that the utility model changes the strained condition in the self-propelled vehicle knockout process comprises that Guard Assy 1, secondary piston push rod 2, secondary piston cylinder 4, secondary piston 5, secondary piston retracing spring 6, piston type energy dissipation device 10, nozzle type energy dissipating machine 11, primary piston retracing spring 12, primary piston 13, primary piston cylinder 14, primary piston push rod 16, Grard Assy 17, secondary piston cylinder end cap 20, primary piston cylinder end cap 21, preceding reinforcement cantilever 22, back strengthen cantilever 23, frame assembly, connecting pipe assembly, hydraulic fluid.

Described frame assembly comprises front bumper 3, first longeron 7, rear bumper 15, second longeron 19 and some crossbeams, constitutes body-chassis frame construction or self-supporting body or semi-integral body; Described connecting pipe assembly comprises first connecting pipe 8, first connecting pipe 18 and horizontal connecting pipe 9; Described forward and backward

reinforcement cantilever

22,23 is captiveed joint with frame assembly; Described forward and backward

piston cylinder

4,14 is fixed on the forward and backward

reinforcement cantilever

22,23; Described connecting pipe assembly is connected forward and backward

piston cylinder

4,14, and is full of hydraulic fluid; Piston

mandril

2,16 1 ends of described forward and backward

piston

4,14 link to each other with forward and backward

piston

5,13 respectively, and the other end links to each other with forward and backward

crash bar

1,17; Described forward and backward

piston

5,13 is in respectively within the forward and backward

piston cylinder

4,14, and its bottom surface contacts with forward and backward piston reset

spring

6,12 respectively; Described forward and backward

piston

5,13 and forward and backward piston mandril the 2, the 16th, can be movable.

When the self-propelled vehicle front end crash, Guard Assy 1, secondary piston push rod 2 and secondary piston 5 whole back seats, secondary piston 5 squeezed fluid hydraulic fluid and secondary piston retracing spring 6, thus the rear end flowing hole of the hydraulic fluid of compression the past piston cylinder 4 flows to first connecting pipe 8.After collision finished, Guard Assy 1, secondary piston push rod 2 and secondary piston 5 were under 6 effects of secondary piston retracing spring, and whole again reach restores to the original state.Certainly, also can between Guard Assy 1 and secondary piston cylinder end cap 20, place elastic element, with the effect of impact and the reset response that reaches secondary piston 5 of buffering vehicle, not shown.

When self-propelled vehicle generation rear end collision, Grard Assy 17, primary piston push rod 16 and primary piston 13 integral body move to vehicle front, primary piston 13 squeezed fluid hydraulic fluid and primary piston retracing spring 12, hydraulic fluid flows to first connecting pipe 8 from the front end flowing hole of primary piston cylinder 14.After collision finished, Grard Assy 17, primary piston push rod 16 and primary piston 13 moved after the integral body again under the effect of primary piston retracing spring 12, restored to the original state.Certainly, also can between Grard Assy 17 and primary piston cylinder end cap 21, place elastic element, with the effect of impact and the reset response that reaches primary piston 13 of buffering vehicle, not shown.

As shown in Figure 4, described piston type energy dissipation device 10 comprises piston depth pressure pipe 101, piston cylinder 102, piston 103, the bar 104 of exerting pressure, plastic deformation part overcoat 105, plastic deformation part 106; Wherein piston depth pressure pipe 101 communicates with above-mentioned first connecting pipe 8, when colliding before or after vehicle takes place, the hydraulic fluid that bears impact pressure flows to described piston type energy dissipation device 10 from first connecting pipe 8, enter piston depth pressure pipe 101 and piston cylinder 102 successively, promote piston 103 motions, piston 103 drives the bar 104 monolithic extruded plastic deformation parts 106 of exerting pressure, and part will consume by the plastic deformation of plastic deformation part 106 thereby will collide the huge kinetic energy that is produced.

As shown in Figure 5, described nozzle type energy dissipating machine 11 comprises nozzle high-pressure pipe 111, fluid cushion chamber 112, the female pipe 113 of nozzle, nozzle 114.Wherein nozzle high-pressure pipe 111 communicates with above-mentioned first connecting pipe 8, when colliding before or after vehicle takes place, the hydraulic fluid that bears impact pressure flows to described nozzle type energy dissipating machine 11 from first connecting pipe 8, enter the female pipe 113 of nozzle high-pressure pipe 111 and nozzle successively, high-voltage hydraulic fluid sprays in the fluid cushion chamber 112 through the nozzle 114 of the female pipe 113 of nozzle, thereby will collide the huge kinetic energy that is produced, and convert the kinetic energy of hydraulic fluid and heat energy to through nozzle 114 and consume.

Described first connecting pipe 8 links to each other with horizontal connecting pipe 9, described piston type energy dissipation device 10, described nozzle type energy dissipating machine 11 respectively again.

In like manner, the forward and backward piston cylinder of self-propelled vehicle opposite side links to each other by second connecting pipe 18, and described second connecting pipe 18 links to each other with the piston type energy dissipation device of horizontal connecting pipe 9, opposite side, the nozzle type energy dissipating machine of opposite side respectively again.Described connecting pipe and high-pressure pipe all are full of fluid.Equally, when rear vehicle end bumps, impact force is affacted on the back reinforcement cantilever that is fixedly linked with frame assembly by the hydrostatic drive meeting.

When self-propelled vehicle during in travels down, when in case the front end bump can't be avoided, knocked object at first contacts Guard Assy 1 and secondary piston push rod 2, secondary piston 5 passed to impact immediately by secondary piston push rod 2, secondary piston 5 will move in secondary piston cylinder 4, thereby impact is passed to hydraulic fluid in the secondary piston retracing spring 6 and first connecting pipe 8, cause pressure to rise, pressure passes to the bottom surface of primary piston 13 synchronously, because will running into the primary piston cylinder end cap 21 of captiveing joint with primary piston cylinder 14 in the process of attempting to retreat, primary piston 13 stops, piston cylinder 14 back reinforcement cantilever 23 captive joints of captiveing joint then with frame assembly, impact in the front end crash process will pass to the rear portion of frame assembly like this, vehicle body will be in extended state this moment, thereby can guarantee effectively that self-propelled vehicle is not extruded distortion in the front end crash process.

After the beginning of front end bump, pressure in the connecting pipe assembly rises rapidly, high-pressure fluid will advance by the piston 103 that piston depth pressure pipe 101 promotes piston type energy dissipation device 10, and bar 104 advanced in unison of exerting pressure that are attached thereto, the bar 104 of exerting pressure will force plastic deformation part 106 that plastic deformation takes place, thereby reach the purpose that part consumes Impact energy.

After the beginning of front end bump, the pressure in the connecting pipe assembly rises rapidly, and high-pressure fluid will flow to nozzle type energy dissipating machine 11 by nozzle high-pressure pipe 111, and high-pressure fluid sprays at a high speed from nozzle 114, thereby reaches the purpose that part consumes Impact energy.

When the front end bump had just finished, the fluid in the connecting pipe assembly remained high pressure conditions, can continue to spray the fluid pressure that reduces in the connecting pipe assembly by nozzle 114, reached balance always and no longer sprayed, thereby reach the purpose that releases energy.

After the front end bump finishes, secondary piston 5 and secondary piston push rod 2 will set back under the effect of secondary piston retracing spring 6, and hydraulic fluid will be back in first connecting pipe 8 from fluid cushion chamber 112 this moment.

When self-propelled vehicle during in travels down, general very difficult timely discovery will have situation about knocking into the back to take place, when in case the rear end bump can't be avoided, the car that initiatively knocks into the back at first contacts Grard Assy 17, primary piston 13 passed to impact immediately by primary piston push rod 16, primary piston 13 will advance in primary piston cylinder 14, thereby power is passed to hydraulic fluid in the primary piston retracing spring 12 and first connecting pipe 8, cause pressure to rise, pressure passes to the bottom surface of secondary piston 5 synchronously, because will running into the secondary piston cylinder end cap 20 of captiveing joint with secondary piston cylinder 4 when attempting to advance, secondary piston 5 stops, and preceding reinforcement cantilever 22 captive joints that secondary piston cylinder 4 is captiveed joint with frame assembly, impact in the rear end collision process will pass to the front portion of frame assembly like this, vehicle body will be in extended state this moment, thereby can guarantee effectively that self-propelled vehicle is not extruded distortion in the front end crash process.

After the bump beginning of rear end, pressure in the connecting pipe assembly rises rapidly, high pressure hydraulic fluid will advance by the piston 103 that piston depth pressure pipe 101 promotes piston type energy dissipation device 10, and bar 104 advanced in unison of exerting pressure that are attached thereto, the bar 104 of exerting pressure will force plastic deformation part 106 that plastic deformation takes place, thereby reach the purpose that part consumes Impact energy.

After the bump beginning of rear end, the pressure of connecting pipe assembly rises rapidly, and high-pressure fluid will flow to nozzle type energy dissipating machine 11 by nozzle high-pressure pipe 111, and high-pressure fluid sprays at a high speed from nozzle 114, thereby reaches the purpose that part consumes Impact energy.

When the rear end bump had just finished, the fluid in the connecting pipe assembly still was in high pressure conditions, can continue to spray the fluid pressure that reduces in first connecting pipe 8 by nozzle 114, reached balance always and no longer sprayed, thereby reach the purpose that releases energy.

After the rear end bump finishes, primary piston 13 and primary piston push rod 16 will set back under the effect of primary piston retracing spring 12, and hydraulic fluid will be back in the connecting pipe assembly from fluid cushion chamber 112 this moment.

Second embodiment:

Fig. 6 shows device second embodiment that the utility model changes the strained condition in the self-propelled vehicle knockout process, for the sake of simplicity, the same section of second kind of embodiment and first kind of enforcement no longer is described, be not both with first embodiment: before second embodiment has removed, cantilever 22 is strengthened in the back, 23, and it is preceding,

primary piston cylinder

4,14 directly captive joint with frame assembly, before described, primary

piston push rod

2,16 respectively with preceding,

primary piston

5,13 link to each other, corresponding then pass frame assembly before,

rear bumper

3,15, last with before, Grard Assy 1,17 link to each other.

The 3rd embodiment:

Fig. 7 shows device the 3rd embodiment that the utility model changes the strained condition in the self-propelled vehicle knockout process.The 3rd embodiment is the connection mode that has changed connecting pipe on the basis of first embodiment.

For the sake of simplicity, with the first embodiment same section, no longer be described.As shown in Figure 7, specific practice is that secondary piston cylinder 4 at first is connected on the horizontal connecting pipe 9 by preceding connecting pipe 24, and laterally connecting pipe 9 is connected on the horizontal connecting pipe 27 in back by central connecting pipe 26 again, and then is connected on the primary piston cylinder 14 by back connecting pipe 25.

The 4th embodiment:

Fig. 8 shows device the 4th embodiment that the utility model changes the strained condition in the self-propelled vehicle knockout process, and the 4th embodiment is the connection mode that has changed connecting pipe on the basis of second embodiment.

For the sake of simplicity, with the second embodiment same section, no longer be described.As shown in Figure 8, specific practice is that secondary piston cylinder 4 at first is connected on the horizontal connecting pipe 9 by preceding connecting pipe 24, and laterally connecting pipe 9 is connected on the horizontal connecting pipe 27 in back by central connecting pipe 26 again, and then is connected on the primary piston cylinder 14 by back connecting pipe 25.

Other embodiment:

Described piston type energy dissipation device 10 of first to fourth above-mentioned embodiment and described nozzle type energy dissipating machine 11 can be selected a ground and be applied in the device that the utility model changes the strained condition in the self-propelled vehicle knockout process, also can select at least one described piston type energy dissipation device 10, also can select at least one described nozzle type energy dissipating machine 11 as the energy-absorbing energy-dissipating element, thereby be combined into many embodiments.

Described piston type energy dissipation device 10 of first to fourth above-mentioned embodiment and described nozzle type energy dissipating machine 11 can be applied in the device of the strained condition in the utility model change self-propelled vehicle knockout process with the varying number array mode, as adopt the different combination of one or more piston type energy dissipation device 10 and one or more nozzle type energy dissipating machine 11, constitute many different embodiments.

The described forward and backward crashproof pilot assembly of first to fourth above-mentioned embodiment also can be selected a ground and be applied in the device that the utility model changes the strained condition in the self-propelled vehicle knockout process, crashproof pilot assembly before promptly only selecting, or only select rear anti-crash pilot assembly, thereby be combined into different embodiments.

The piston type energy dissipation device 10 of first to fourth above-mentioned embodiment and/or nozzle type energy dissipating machine 11 also can be connected on first and second connecting

pipe

8,18 and/or the horizontal connecting pipe, thereby constitute many various combination modes.Also the piston type energy dissipation device 10 and/or the nozzle type energy dissipating machine 11 of varying number can be connected on first and second connecting

pipe

8,18 and/or the horizontal connecting pipe, also can constitute many various combination modes.

The utility model not only is fit to front end bump and rear end bump, the utility model can also be applied to prevent on the side impact.

Should be appreciated that the utility model is not limited to above-mentioned embodiment, above-mentioned preferred implementation only is exemplary, those skilled in the art can make the various modifications that are equal to and replacement and various combination, and obtain different embodiments according to spirit of the present utility model.

The utility model has following effect:

1) first proposition can change the device of the stress in the motor vehicle knockout process: when motor vehicle generation front end crash The time, by piston and pilot fluid impact is passed to motor vehicle rear, before motor vehicle will continue under the effect of inertia force OK, and impact will attempt to stop motor vehicle to continue to move ahead after passing to motor vehicle rear, and vehicle body will be in extended state this moment; And when rear end, rear portion bump takes place motor vehicle, by piston and pilot fluid impact is passed to motor vehicle front end, motor-driven Car will be attempted the speed that keeps original under the effect of inertia force, and impact will make the motor vehicle examination after passing to motor vehicle front end Figure accelerates to move ahead, and vehicle body will be in extended state this moment.

2) having proposed first to utilize the hydraulic drive piston also to drive the bar of exerting pressure forces the distortion of plastic deformation part to come catabiotic Principle.

3) propose first to utilize nozzle to discharge the energy of connecting pipe inner high voltage fluid, greatly reduced the bump of motor vehicle Strength, and greatly reduced the bounce of high-pressure fluid.

4) nozzle not only can release energy in knockout process, after collision finishes, as long as the fluid in the connecting pipe still is in High pressure conditions, nozzle will release energy.

5) utilize piston type energy dissipation device and nozzle type energy dissipating machine to discharge the energy equivalence of connecting pipe inner high voltage fluid in increase The compressed coefficient of hydraulic fluid, overcome the problem that gas compressibility factor is excessive, liquid compressibility factor is too small.

6) occupant's safety can be effectively protected, motor vehicle can be effectively protected.

7) when general bump takes place, motor vehicle and occupant will not be subjected to any infringement, can avoid minor accident also will report Alert, as to cause traffic paralysis situation occurs.

8) can greatly reduce the danger that occurs when colliding at a high speed.

9) the front end impact can be passed on the rear bumper, be similar to the tail that has also been held on to fleeing cattle in stampede fleeing cattle in stampede before the no show by the people, force fleeing cattle in stampede to be slowed down, and existing anticollision device be the head that directly goes to grab the fleeing cattle in stampede of running.

10) after the utility model is applied, can alleviate the crowded traffic or the paralysis situation that cause because of traffic accident greatly, will bring glad tidings to congested traffic day by day.

11) after the utility model is applied, will reduce traffic accident rate, traffic accident injures and deaths rate significantly.

12) after the utility model is applied, will reduce the compensation amount of money of insurance company greatly.

Claims

1. device that changes the strained condition in the self-propelled vehicle knockout process, it comprises that Guard Assy, secondary piston push rod, secondary piston cylinder, secondary piston, secondary piston retracing spring, primary piston retracing spring, primary piston, primary piston cylinder, primary piston push rod, Grard Assy, preceding reinforcement cantilever, back strengthen cantilever, frame assembly, connecting pipe assembly, hydraulic fluid; Described forward and backward reinforcement cantilever is captiveed joint with frame assembly, described forward and backward piston cylinder is fixed on the forward and backward reinforcement cantilever; Described connecting pipe assembly is connected forward and backward piston cylinder, and is full of hydraulic fluid; Described forward and backward piston mandril one end links to each other with forward and backward piston respectively, and the other end links to each other with forward and backward crash bar respectively; Described forward and backward piston is in respectively within the forward and backward piston cylinder, and its bottom surface contacts with forward and backward piston reset spring respectively; Described forward and backward piston and forward and backward piston mandril can be movable; It is characterized in that described forward and backward piston cylinder is fixed on the forward and backward reinforcement cantilever that is fixedly linked with frame assembly, described connecting pipe assembly is connected forward and backward piston cylinder, and is full of hydraulic fluid; In the front end knockout process, secondary piston can make the pressure that reaches the hydraulic fluid in the connecting pipe assembly in the forward and backward piston cylinder rise rapidly under the driving of secondary piston push rod and Guard Assy, pressure passes to the bottom surface of primary piston synchronously, and the front by primary piston affacts impact on the back reinforcement cantilever of captiveing joint with frame assembly at last; In the knockout process of rear end, primary piston can make the pressure that reaches the hydraulic fluid in the connecting pipe assembly in the forward and backward piston cylinder rise rapidly under the driving of primary piston push rod and Grard Assy, pressure passes to the bottom surface of secondary piston synchronously, and the front by secondary piston affacts impact on the preceding reinforcement cantilever of captiveing joint with frame assembly at last.

2. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is characterized in that the piston type energy dissipation device that comprises that also at least one is connected with the connecting pipe assembly.

3. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is characterized in that the nozzle type energy dissipating machine that comprises that also at least one is connected with the connecting pipe assembly.

4. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is characterized in that described frame assembly comprises front bumper, rear bumper, first longeron, second longeron and some crossbeams.

5. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is characterized in that described connecting pipe assembly comprises first and second connecting pipe and horizontal connecting pipe.

6. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 2 is characterized in that described piston type energy dissipation device comprises piston depth pressure pipe, piston cylinder, piston, the bar of exerting pressure, plastic deformation part overcoat, plastic deformation part; Described piston type energy dissipation device is to link to each other with the pilot assembly by the piston depth pressure pipe; Described piston is within the piston cylinder; Described bar one end of exerting pressure links to each other with piston, and the other end contacts with the plastic deformation part; Described plastic deformation part places in the plastic deformation part overcoat; Described plastic deformation part overcoat links to each other with piston cylinder; The described piston and the bar of exerting pressure can be movable.

7. according to the device of the strained condition in claim 2 or the 6 described change self-propelled vehicle knockout process, it is characterized in that described hydraulic fluid flows to described piston type energy dissipation device from the connecting pipe assembly, enter piston depth pressure pipe and piston cylinder successively, driven plunger motion, piston drive the bar extruding plastic deformation part of exerting pressure.

8. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 3 is characterized in that described nozzle type energy dissipating machine comprises nozzle high-pressure pipe, fluid cushion chamber, the female pipe of nozzle, nozzle; Described nozzle type energy dissipating machine is to be communicated with by the hydraulic fluid of nozzle high-pressure pipe with the connecting pipe assembly; Described nozzle links to each other with the female pipe of nozzle.

9. according to the device of the strained condition in claim 3 or the 8 described change self-propelled vehicle knockout process, it is characterized in that described hydraulic fluid flows to described nozzle type energy dissipating machine from the connecting pipe assembly, enter the female pipe of nozzle high-pressure pipe and nozzle successively, hydraulic fluid through the nozzle ejection of the female pipe of nozzle in the fluid cushion chamber.

10. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is strengthened cantilever before it is characterized in that fixedly mounting at least one on the described frame assembly and is reached the secondary piston cylinder of captive joint with it.

11. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is strengthened cantilever after it is characterized in that fixedly mounting at least one on the described frame assembly and is reached the primary piston cylinder of captive joint with it.

12. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1 is characterized in that being placed with elastic element between piston cylinder cover and crash bar.

13. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 1, before and after it is characterized in that also comprising forward and backward piston cylinder directly and frame assembly be fixedly linked, forward and backward piston mandril passes through the forward and backward safety lever of frame assembly.

14. the device of the strained condition in the change self-propelled vehicle knockout process according to claim 5, it is characterized in that described connecting pipe assembly also comprises central connecting pipe, back laterally connecting pipe, preceding connecting pipe, back connecting pipe, the secondary piston cylinder at first is connected on the horizontal connecting pipe by preceding connecting pipe, laterally connecting pipe is connected on the horizontal connecting pipe in back by central connecting pipe again, and then is connected on the primary piston cylinder by the back connecting pipe.

15., it is characterized in that all connecting pipes and the high-pressure pipe in the described connecting pipe assembly can be crooked according to the device of the strained condition in claim 5 or the 13 described change self-propelled vehicle knockout process.

16. the device according to the strained condition in claim 1 or the 4 described change self-propelled vehicle knockout process is characterized in that described first and second longeron can be crooked.

17. the device according to the strained condition in claim 1 or the 4 described change self-propelled vehicle knockout process is characterized in that described first and second longeron can be a straight beam.