CN101554869B - Mis-accelerator treading limiter - Google Patents
Mis-accelerator treading limiter Download PDFInfo
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- CN101554869B CN101554869B CN2009100985479A CN200910098547A CN101554869B CN 101554869 B CN101554869 B CN 101554869B CN 2009100985479 A CN2009100985479 A CN 2009100985479A CN 200910098547 A CN200910098547 A CN 200910098547A CN 101554869 B CN101554869 B CN 101554869B
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Abstract
The invention disclose a mis-accelerator pressing limiter, consisting of a guiding-type self-reset cylinder and a hydraulic current-limiting overpressure self-closing valve which are communicated witheach other; the guiding-type self-reset cylinder comprises a cylinder base (10), a hydrocylinder body (5), a cylinder body end cover (3), a piston end cover (1) and the like, wherein the hydrocylinde r base (10) is internally provided with an oil return pipe component and an oil inlet pipe component which are respectively communicated with the inner cavity of the cylinder body (5); the hydraulic current-limiting overpressure self-closing valve comprises a valve body (50) which is internally provided with an adjustable valve component, a pressure channel (49), a pressure chamber (34), an oil return channel (36) and the like, a valve pressure guide hole (42) and a valve oil return guide hole (39) are respectively arranged above the valve body (50), the oil return pipe component is communicated with the valve oil return guide hole (39), and the oil inlet pipe component is communicated with the valve pressure guide hole (42). The mis-accelerator pressing limiter has simple structure and good self-closing effect.
Description
Technical field
The present invention relates to a kind of hydraulic stop, particularly a kind of mis-accelerator pressing limiter.
Background technology
Existing on the market at present self-closing valve has following several: self-closing valve for tube bursting, the self-closing valve of stopping the supple of gas or steam, gas self-closing valve, nothing are pressed self-closing valve, the self-closing valve that comes off, bath delay self-closing valve, diving self-closing valve peculiar to vessel, the self-closing fender guard of oily vapour delivery duct superpressure etc.Above-mentioned self-closing valve all can't be realized the superpressure current limliting and the self-closing and post-decompression auto-reset function of superpressure of hydraulic pressure.
Existing self-resetting oil cylinder in order to the control self-closing valve all exists following problem: after the external force on the oil cylinder is disengaged, during internal hydraulic pressure power in not shedding the oil cylinder chamber, all can't reach real automatically reset purpose.In addition, present self-resetting oil cylinder all is resetting of retraction, and the piston body after resetting is in waits to rise state, can't be used for some special occasions.The intracavity liquid that is produced when under specific circumstances, piston body bounces back can't be used for retraction force and speed are carried out range and control when discharging.
Along with the development of automobile with popularize, the traffic accident of road is also risen thereupon.Traffic accident mainly is that the faulty drive by chaufeur causes sometimes, and in case of emergency, chaufeur is a kind of common maloperation phenomenon with wrong the stepping on when brake of throttle." throttle is when brake " causes the not guilty injures and deaths of other traffic participants.How missing under the situation about stepping on, it is very crucial that control throttle mistake is stepped on.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of effective mis-accelerator pressing limiter simple in structure, self-closing.
In order to solve the problems of the technologies described above, the invention provides a kind of mis-accelerator pressing limiter, form by guide type self-resetting oil cylinder that is interconnected and hydraulic flow-limiting overpressure self-closing valve;
Guide type self-resetting oil cylinder comprises oil cylinder seat, cylinder body, cylinder body end cap and piston end cap, in cylinder body, be provided with the piston body that is movably connected with cylinder body, piston body links to each other with the piston end cap, in cylinder body, also be provided with piston reset spring, in oil cylinder seat, be provided with cavity, be provided with the spring perch with holes of through hole in cavity, cavity relies on through hole and cylinder body intracavity inter-connection; Also be provided with Pilot poppet that complements one another and the guided seat with holes that has through hole in cavity, spring perch with holes is positioned at the top of Pilot poppet; The two ends of piston reset spring link to each other with spring perch with holes with the piston end cap respectively, and the two ends of guide valve spring link to each other with Pilot poppet with spring perch with holes respectively; In oil cylinder seat, also be respectively equipped with the oil return pipe assembly and the oil inlet assembly that all are connected with cavity;
Hydraulic flow-limiting overpressure self-closing valve comprises valve body, is provided with the adjustable valve assembly in the valve body, also is provided with pressure channel, pressure chamber and drainback passage in valve body, and described pressure channel, pressure chamber, adjustable valve assembly and drainback passage are connected successively; Be respectively equipped with valve pressure pilot hole and valve oil return pilot hole on the valve body, valve pressure pilot hole is connected with pressure channel, and valve oil return pilot hole is connected with drainback passage; Current limliting bibcock passage is connected with the pressure chamber after running through pressure channel, is provided with the flow-limiting valve assembly that is used for adjustment pressure channel cross-section flow in the current limliting bibcock passage;
The oil return pipe assembly is connected with valve oil return pilot hole, and the oil inlet assembly is connected with valve pressure pilot hole.
Improvement as mis-accelerator pressing limiter of the present invention:
Oil return pipe assembly in the guide type self-resetting oil cylinder comprises back leakage groove and the oil cylinder oil return pilot hole that lays respectively in the oil cylinder seat, and cavity, Pilot poppet and the formed gap of guided seat with holes, back leakage groove and oil cylinder oil return pilot hole are connected successively; Oil cylinder oil return pilot hole is connected with valve oil return pilot hole;
Guide type self-resetting oil cylinder also comprises petrol storage tank; The inner chamber of petrol storage tank is connected with back leakage groove;
Oil inlet assembly in the guide type self-resetting oil cylinder comprises oil cylinder working-pressure pilot hole and pressure oill tank, and through hole and cavity in oil cylinder working-pressure pilot hole, pressure oill tank, the guided seat with holes are connected successively; The oil cylinder working-pressure pilot hole is connected with valve pressure pilot hole.
Further improvement as mis-accelerator pressing limiter of the present invention: piston body is the tubular body of hollow, and piston reset spring is arranged in the inner chamber of piston body.
Further improvement as mis-accelerator pressing limiter of the present invention: between piston body and the cylinder body end cap sealing member is set; Oil cylinder seat is provided with mounting hole.
Further improvement as mis-accelerator pressing limiter of the present invention: the elastic force of piston reset spring is greater than the elastic force of guide valve spring.
Further improvement as mis-accelerator pressing limiter of the present invention: also be provided with self-closing bibcock passage in the valve body, self-closing bibcock passage runs through pressure channel and drainback passage, is provided with the self-closing valve assembly that is used to regulate drainback passage cross section flow in the self-closing bibcock passage; Self-closing bibcock channel bit is between valve pressure pilot hole and current limliting bibcock passage.
Further improvement as mis-accelerator pressing limiter of the present invention:
Establish the valve seat of passage and the adjusting needle that matches with passage in the adjustable valve assembly comprises, valve seat and valve body are fixedly linked, and the two ends of passage are connected with pressure chamber and drainback passage respectively; Regulating needle links to each other with block nut and valve body are up and down by setting nut;
The flow-limiting valve assembly comprises continuous current limliting bibcock and flow-limiting valve spring, and the current limliting bibcock that horizontally slips in current limliting bibcock passage is used to change pressure channel cross section flow;
The self-closing valve assembly comprises continuous overpressure self-closing valve bolt and self-closing valve spring, and the overpressure self-closing valve bolt that horizontally slips in self-closing bibcock passage is used to change drainback passage cross section flow.
Also be provided with pressure sensor or pressure switch on valve body, pressure sensor or pressure switch are connected with pressure channel.Mis-accelerator pressing limiter of the present invention is made up of guide type self-resetting oil cylinder and these 2 parts that are interconnected greatly of hydraulic flow-limiting overpressure self-closing valve;
The passage that guide type self-resetting oil cylinder, the liquid in the oil cylinder chamber are discharged and sucked has guiding.After piston body is subjected to external force, enter in the cylinder body, when causing liquid in the cylinder body to be discharged, guide valve is in closed condition (being to be closure state between Pilot poppet and the guided seat with holes), liquid can only flow to pressure oill tank by the through hole on the guided seat with holes, therefore can reach the compressive force that the piston end cap is transmitted, the purpose that speed is carried out range and control.Behind the compressive force that the releasing piston end covers, under the effect of piston reset spring, guide valve self-opening (being to keep certain clearance between Pilot poppet and the guided seat with holes), a large amount of liquid is drawn onto cavity from back leakage groove after by this guide valve, be filled in the inner chamber of cylinder body by the through hole on the spring perch with holes then, thereby make piston body reset (upward movement) rapidly to ejecting the position, again can be after resetting with the guide valve SELF CL.This guide type self-resetting oil cylinder has the following advantages: simple in structure, can really realize automatically reseting, can be used for retraction force and speed are carried out range and control.
Hydraulic flow-limiting overpressure self-closing valve, flow-limiting valve assembly and the interaction of self-closing valve assembly, energy mutual action; What the present invention taked is the design that the transversal surface bolt closes, overcome in the hydraulic valve common when external and internal pressure near the time buzz that sends because of the spool vibrations, the stability and the service life of having improved whole valve body.Flow-limiting overpressure self-closing valve of the present invention need not go the valve of cutting out operates after external force is removed by other actions or power, just can automatically terminate closed condition, and bibcock can be got back to incipient state.Flow-limiting overpressure self-closing valve, during actual the use, setting pressure switch or pressure sensor behind the removal end socket, thus convert the signal of pressure to electric signal.
Mis-accelerator pressing limiter of the present invention is installed in the front lower place of Das Gaspedal, because the power of step on the accelerator is far smaller than power used when in case of emergency touching on the brake and speed with descending to step on speed under the normal circumstances.When missing throttle when braking, can cause the improper increase of flow, thereby surpass the maximum flow that is allowed in the hydraulic flow-limiting overpressure self-closing valve, hydraulic flow-limiting overpressure self-closing valve is closed, at this moment, even firmly also stepped on motionless throttle again.During actual the use, be installed in the pressure switch or the pressure sensor effect of being under pressure on the hydraulic flow-limiting overpressure self-closing valve after, open and close the motion of the brake of vehicle and power-supply system thereby make pressure signal convert electric signal to control vehicle.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the sectional structure scheme drawing of the guide type self-resetting oil cylinder among the present invention;
Fig. 2 is the section-drawing that the A-A of Fig. 1 cuts open;
Fig. 3 is the sectional structure scheme drawing of the hydraulic flow-limiting overpressure self-closing valve among the present invention;
Fig. 4 is the enlarged diagram of B under the local closed condition of flow-limiting valve assembly among Fig. 3;
Fig. 5 is the enlarged diagram of B under flow-limiting valve assembly full closing state among Fig. 3.
Fig. 6 is the annexation scheme drawing of mis-accelerator pressing limiter of the present invention.
The specific embodiment
Fig. 1～Fig. 6 is made up of guide type self-resetting oil cylinder that is interconnected and hydraulic flow-limiting overpressure self-closing valve in conjunction with having provided a kind of mis-accelerator pressing limiter.
Guide type self-resetting oil cylinder comprises oil cylinder seat 10, cylinder body 5, cylinder body end cap 3 and piston end cap 1.
Fixedly install cylinder body end cap 3 at the top of cylinder body 5, fixedly install oil cylinder seat 10 in the bottom of cylinder body 5, be provided with the piston body 6 that is movably connected with cylinder body 5 in cylinder body 5, this piston body 6 passes cylinder body end cap 3 backs and is fixedly linked with piston end cap 1.Between piston body 6 and cylinder body end cap 3, sealing member 2 is set, thereby guarantees that the hydraulic oil in the cylinder body 5 can not leak.This piston body 6 is the tubular body of a hollow, and piston reset spring 7 is arranged in the inner chamber of piston body 6.Petrol storage tank 4 is the tubular body of a hollow, and cylinder body 5 is sleeved in the inner chamber 41 of petrol storage tank 4, and the top of petrol storage tank 4 and cylinder body end cap 3 are fixedly linked hermetically, and the bottom of petrol storage tank 8 and oil cylinder seat 10 are fixedly linked hermetically; The inner chamber 41 of petrol storage tank 4 is used to deposit hydraulic oil.Be provided with the cavity 101 with the intracavity inter-connection of cylinder body 5 in oil cylinder seat 10, be provided with the spring perch with holes 9 of several through holes 91 at cavity 101, spring perch 9 with holes fixes with oil cylinder seat 10, and cavity 101 is by the intracavity inter-connection of through hole 91 with cylinder body 5.Spring perch 9 with holes is positioned in the below of cylinder body 5.The two ends of piston reset spring 7 link to each other with spring perch 9 with holes with piston end cap 1 respectively.
In cavity 101, also be provided with Pilot poppet 13 that complements one another and the guided seat with holes 12 that has through hole 121; Pilot poppet 13 and guided seat with holes 12 all be positioned at spring perch 9 with holes under, guided seat with holes 12 is fixedly linked with oil cylinder seat 10; The two ends of guide valve spring 14 link to each other with Pilot poppet 13 with spring perch 9 with holes respectively.The elastic force of piston reset spring 7 is greater than the elastic force of guide valve spring 14.
In oil cylinder seat 10, also be respectively equipped with back leakage groove 15 and oil cylinder oil return pilot hole 18.When Pilot poppet 13 and guided seat 12 with holes were separated, back leakage groove 15 was connected with cavity 101 with gap between the guided seat 12 with holes by Pilot poppet 13; One end of oil cylinder oil return pilot hole 18 is connected with back leakage groove 15, the other end penetrates oil cylinder seat 10 backs and links to each other with hydraulic flow-limiting overpressure self-closing valve; The inner chamber 41 of petrol storage tank 4 is connected with back leakage groove 15 by through hole 20.Also be respectively equipped with oil cylinder working-pressure pilot hole 17 and pressure oill tank 11 in oil cylinder seat 10, an end of oil cylinder working-pressure pilot hole 17 is connected with cavity 101 by the through hole 121 in pressure oill tank 11, the guided seat with holes 12 successively; The other end of oil cylinder working-pressure pilot hole 17 penetrates oil cylinder seat 10 backs and links to each other with hydraulic flow-limiting overpressure self-closing valve.
For convenience maintenance is provided with an openable shrouding 16 in the bottom of oil cylinder seat 10, open this shrouding 16 after, back leakage groove 15 just can expose.
On oil cylinder seat 10, be provided with several oil cylinder mounting holes 19,, this guide type self-resetting oil cylinder can be fixed in the fixing system and device of actual needs by this oil cylinder mounting hole 19.
Hydraulic flow-limiting overpressure self-closing valve comprises valve body 50, is provided with pressure channel 49, pressure chamber 34, drainback passage 36 and adjustable valve assembly in valve body 50, and the adjustable valve assembly is used to regulate flow.
Establish the valve seat 35 of passage 351 and the adjusting needle 33 that matches with this passage 351 in the adjustable valve assembly comprises, valve seat 35 is fixedly mounted in the valve body 50.
Regulate needle 33 by setting nut 32 and block nut 31 and 50 up and down linking to each other of valve body, be specially: setting nut 32 is fixedly mounted in the valve body 50, between the outside face of setting nut 32 and valve body 50, seal ring 51 is set, thereby guarantees the leak tightness between setting nut 32 and the valve body 50.The outside face of regulating needle 33 is provided with the outside thread that matches with setting nut 32, and dependence is threaded, and regulating needle 33 can be along setting nut 32 up-and-down movement.The upper end of regulating needle 33 is sleeved in the block nut 31, and for screw thread links to each other, this surrounds and is provided with sealing member 52 in the gap that forms at block nut 31, setting nut 32 and adjusting needle 33 between block nut 31 and the setting nut 32.When block nut 31 and setting nut 32 closely fixedly the time, sealing member 52 back that is squeezed produces certain deformation, and sealing member 52 just presses block nut 31, setting nut 32 and adjusting needle 33 simultaneously, thereby reaches the leak free effect.
The bottom of regulating needle 33 is for being inverted shape cone 331, and this is inverted shape cone 331 over against passage 351; Be inverted shape cone 331 and passage 351 upper-lower position relation each other by changing, can effectively change the flow of passage 351.Pressure chamber 34 is positioned at the top of passage 351, and drainback passage 36 is positioned at the below of passage 351, regulates needle 33 and is positioned at pressure chamber 34; Pressure channel 49, pressure chamber 34, passage 351 and drainback passage 36 are connected successively.Be respectively equipped with valve pressure pilot hole 42 and valve oil return pilot hole 39 on valve body 50, valve pressure pilot hole 42 is connected with pressure channel 49, and valve oil return pilot hole 39 is connected with drainback passage 36.
Be provided with the current limliting bibcock passage 53 that an end connects valve body 50 in valve body 50, this current limliting bibcock passage 53 laterally runs through pressure channel 49 backs and is connected with pressure chamber 34.Be provided with spring perch 46 and the flow-limiting valve assembly that is used for adjustment pressure passage 49 cross section flows in current limliting bibcock passage 53, spring perch 46 is fixedly linked with valve body 50.
This flow-limiting valve assembly comprises current limliting bibcock 48 and flow-limiting valve spring 45.This current limliting bibcock 48 is a cylinder, this cylindrical diameter is slightly less than the aperture of current limliting bibcock passage 53, outside face at this cylinder interlude is provided with groove 481, thereby makes current limliting bibcock 48 form the dumbbell shaped that two ends, left and right sides diameter is big, mid diameter is little; The left side of current limliting bibcock 48 is provided with a recess, and recess, the other end that flow-limiting valve spring 45 1 ends that are positioned at current limliting bibcock passage 53 are supporting above-mentioned current limliting bibcock 48 are supporting spring perch 46.Between inside face, seal ring 44 is set, thereby guarantees that pressure channel 49 interior highly pressurised liquids can not reveal near the outside face of the current limliting bibcock 48 of spring perch 46 and current limliting bibcock passage 53.Under normal circumstances (when being the fluid flow of fluid flow≤setting of flowing into of valve pressure pilot hole 42), groove 481 is positioned at pressure channel 49.When the hydraulic pressure of actual hydraulic pressure＞setting, the half section meeting in the right side of current limliting bibcock 48 moves to left to pressure channel 49, thereby reduces the flow area of pressure channel 49, until thorough retaining pressure passage 49.
Be provided with the self-closing valve passage 41 that connects valve body 50 in valve body 50, this self-closing bibcock passage 41 laterally runs through pressure channel 49 and drainback passage 36.Self-closing bibcock passage 41 is positioned at the below of current limliting bibcock passage 53, so pressure channel 49 elder generation's process self-closing valve passages 41, and then through current limliting bibcock passage 53.In self-closing valve passage 41, be provided with self-closing valve end socket 37 and the self-closing valve assembly that is used to regulate drainback passage 36 cross section flows, self-closing valve end socket 37 is fixedly linked with valve body 50, the effect of spring perch of having held concurrently of this self-closing valve end socket 37, rely on sealing member 371 to realize sealing between self-closing valve end socket 37 and the valve body 50, self-closing valve end socket 37 is positioned at the right-hand member of self-closing valve passage 41.This self-closing valve assembly comprises overpressure self-closing valve bolt 40 and self-closing valve spring 38; The two ends of self-closing valve spring 38 are being supported self-closing valve end socket 37 and overpressure self-closing valve bolt 40 respectively.Overpressure self-closing valve bolt 40 is a cylinder, and the diameter of overpressure self-closing valve bolt 40 is slightly less than the aperture of self-closing valve passage 41.When overpressure self-closing valve bolt 40 moves to right to drainback passage 36, can reduce the flow area of drainback passage 36, until closing in self-closing valve passage 41.The elastic force of self-closing valve spring 38 is greater than the elastic force of flow-limiting valve spring 45.Left end at self-closing bibcock passage 41 is provided with a pressure sensor 47, and this pressure sensor 47 is connected with pressure channel 49.Also can be provided with several pressure switches (or pressure sensor) on valve body 50, these pressure switches (or pressure sensor) all are connected with pressure channel 49, also are provided with mounting hole 43 on valve body 50, and this mounting hole 43 is used for fixing this flow-limiting overpressure self-closing valve.
Oil cylinder oil return pilot hole 18 is connected with valve oil return pilot hole 39; Oil cylinder working-pressure pilot hole 17 is connected with valve pressure pilot hole 42.
Mis-accelerator pressing limiter of the present invention, during real work, finish following preliminary preparation in advance:
A, the mounting hole 43 by hydraulic flow-limiting overpressure self-closing valve are connected with guide type self-resetting oil cylinder mounting hole 19, make mis-accelerator pressing limiter of the present invention become an integral piece.Mis-accelerator pressing limiter is installed in the front lower place of pedal, and piston end cap 1 is connected with Das Gaspedal.
B, according to the characteristic of vehicle and individual's driving habit, pairing flow when setting the maximum throttle acceleration condition under the normal circumstances.Unclamp block nut 31, regulate needle 33 along setting nut 32 up-and-down movements, be used to control to adjust the distance between needle 33 and the valve seat 35, promptly regulate the distance of being inverted between shape cone 331 and the passage 351, thereby play the effect of regulating flow (promptly satisfying above-mentioned setting flow).When reaching the setting traffic requirement, tighten block nut 31, thereby the position relation of regulating between needle 33 and the valve seat 35 is effectively fixed.When tightening block nut 31, after being squeezed, sealing member 52 produces certain deformation, and sealing member 52 just presses block nut 31, setting nut 32 simultaneously and regulates needle 33, fixes and the leak free effect thereby reach.(annotating: under normal circumstances configured flow value)
3, the hydraulic control system of being controlled power supply and brake being used in pressure sensor 47 (or pressure switch) and the vehicle links to each other.
Concrete working process is as follows:
1, the chaufeur pedal of stepping on the throttle, piston end cap 1 bears downward pressure, and piston body 6 moves downward, so piston reset spring 7 is compressed.Hydraulic oil in cylinder body 5 inner chambers is squeezed into cavity 101 from the through hole 91 on the spring perch 9 with holes, at this moment, because the valve that Pilot poppet 13 and guided seat with holes 12 are formed is in closed condition; Therefore, the above-mentioned hydraulic oil that is squeezed in the cavity 101 is discharged from outside the whole guide type self-resetting oil cylinder by through hole 121, pressure oill tank 11, oil cylinder working-pressure pilot hole 17 in the guided seat 12 with holes successively, then enters in the hydraulic flow-limiting overpressure self-closing valve from valve pressure pilot hole 42 as high pressure oil.
Hydraulic oil is in valve pressure pilot hole 42 feed pressure passages 49, and passage 351, drainback passage 36 in the pressure chamber 34 that flows through successively then, the valve seat 35 are discharged from valve oil return pilot hole 39 at last.The oil return of discharging from hydraulic flow-limiting overpressure self-closing valve enters the inner chamber 41 of petrol storage tank 4 after by oil cylinder oil return pilot hole 18, back leakage groove 15, through hole 20.
1), when under the chaufeur normal condition during step on the accelerator, the speed of stepping on is slowly down, usefulness be the power of tiptoe, so during hydraulic fluid flow rate≤settings flow, groove 481 is positioned at pressure channel 49, the normal cross section of pressure channel 49 maintenances this moment flow.Pressure sensor 47 this moment (yet can be pressure switch) does not produce electric signal.
2), when chaufeur under the emergency state is mistakened as throttle when doing brake and stepping on, the speed of stepping on is momentary down, usefulness be maximum, force, so hydraulic fluid flow rate＞setting flow.Since the increase of flow, and the permission flow of passage 351 does not change, so the pressure in pressure chamber 34 and the pressure channel 49 all can rise.Because the elastic force of self-closing valve spring 38 is greater than the elastic force of flow-limiting valve spring 45; Therefore under the effect of identical power, flow-limiting valve spring 45 can be compressed prior to self-closing valve spring 38.Flow-limiting valve spring 45 is compressed, and current limliting bibcock 48 will be moved to the left, and groove 481 shifts out in pressure channel 49, and the right-hand part of current limliting bibcock 48 enters in the pressure channel 49, thereby reduces the flow area (being that pressure channel 49 is partially closed) of pressure channel 49; As shown in Figure 4.Because pressure channel 49 is partially closed, so flow reduces, thereby makes the flow of regulating between needle 33 and the valve seat 35 equal flow between current limliting bibcock 48 and the pressure channel 49 substantially.
But, owing to the flow that enters pressure channel 49 from valve pressure pilot hole 42 does not reduce because of the metering function of current limliting bibcock 48, therefore cause raising at valve pressure pilot hole 42 to the pressure in this section pressure channel 49 between the current limliting bibcock passage 53, thereby can overcome self-closing valve spring 38 resistances, self-closing valve spring 38 is compressed, and overpressure self-closing valve bolt 40 moves to right to drainback passage 36; Drainback passage 36 is closed by overpressure self-closing valve bolt 40, and the liquid of regulating the gap between needle 33 and the valve seat 35 that comes out to flow through then from pressure chamber 34 can't flow out from drainback passage 36, thereby make the pressure in the pressure chamber 34 raise rapidly.Because the pressure in the pressure chamber 34 further raises, thereby flow-limiting valve spring 45 is further compressed, the flow area of pressure channel 49 further reduces.Thoroughly stopped up by current limliting bibcock 48 until pressure channel 49, as shown in Figure 5.
Like this, just realized the self-closing effect of hydraulic flow-limiting overpressure self-closing valve; The flow of turnover hydraulic flow-limiting overpressure self-closing valve is thoroughly cut off; Therefore, even chaufeur has firmly also been stepped on motionless throttle again.
Pressure sensor 47 (also can be pressure switch) is responsible for converting the pressure signal in the pressure channel 49 to electric signal, and with this electric signal transmission to the hydraulic control system that is used to control throttle and brake, thereby realize closing ignition system and start brake system, finally make vehicle out of service.
2, when chaufeur unclamps Das Gaspedal, because the external force that acts on the piston end cap 1 is removed, under the effect of piston reset spring 7 elastic-restoring forces, piston end cap 1 drives piston body 6 upward movements, and this moment, cylinder body 5 inner chambers will produce vacuum phenomenon.Pull of vacuum can overcome the elastic force of guide valve spring 14 and the deadweight of Pilot poppet 13, thereby makes Pilot poppet 13 upward movements, so Pilot poppet 13 is separated with guided seat 12 with holes; Meanwhile, guide valve spring 14 is compressed.
Under the effect of above-mentioned pull of vacuum, the hydraulic oil in the inner chamber 41 of petrol storage tank 4 enters in cylinder body 5 inner chambers by the through hole 91 on the gap between through hole 20, back leakage groove 15, Pilot poppet 13 and the guided seat with holes 12, cavity 101, the spring perch with holes 9.Along with the hydraulic oil in cylinder body 5 inner chambers is more and more, piston body 6 is resetted (upward movement) rapidly to ejecting the position; Pull of vacuum fades away in cylinder body 5 inner chambers at this moment.Under the effect of own wt and guide valve spring 14 tension force, Pilot poppet 13 and guided seat 12 with holes be closed contact again, and the valve that Pilot poppet 13 and guided seat with holes 12 are formed is in closed condition.
At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (6)
1. a mis-accelerator pressing limiter is characterized in that: be made up of guide type self-resetting oil cylinder that is interconnected and hydraulic flow-limiting overpressure self-closing valve;
Described guide type self-resetting oil cylinder comprises oil cylinder seat (10), cylinder body (5), cylinder body end cap (3) and piston end cap (1), in cylinder body (5), be provided with the piston body (6) that is movably connected with cylinder body (5), piston body (6) links to each other with piston end cap (1), in cylinder body (5), also be provided with piston reset spring (7), in oil cylinder seat (10), be provided with cavity (101), be provided with the spring perch with holes (9) of through hole (91) in described cavity (101), described cavity (101) relies on through hole (91) and cylinder body (5) intracavity inter-connection; Also be provided with Pilot poppet (13) that complements one another and the guided seat with holes (12) that has through hole (121) in described cavity (101), described spring perch with holes (9) is positioned at the top of Pilot poppet (13); The two ends of piston reset spring (7) link to each other with spring perch with holes (9) with piston end cap (1) respectively, and the two ends of guide valve spring (14) link to each other with Pilot poppet (13) with spring perch with holes (9) respectively; In oil cylinder seat (10), also be respectively equipped with the oil return pipe assembly and the oil inlet assembly that all are connected with cavity (101);
Described hydraulic flow-limiting overpressure self-closing valve comprises valve body (50), described valve body is provided with the adjustable valve assembly in (50), also be provided with pressure channel (49), pressure chamber (34) and drainback passage (36) in valve body (50), described pressure channel (49), pressure chamber (34), adjustable valve assembly and drainback passage (36) are connected successively; Be respectively equipped with valve pressure pilot hole (42) and valve oil return pilot hole (39) on the valve body (50), valve pressure pilot hole (42) is connected with pressure channel (49), and valve oil return pilot hole (39) is connected with drainback passage (36); Current limliting bibcock passage (53) runs through pressure channel (49) back and is connected with pressure chamber (34), is provided with the flow-limiting valve assembly that is used for adjustment pressure passage (49) cross section flow in the described current limliting bibcock passage (53); Also be provided with self-closing bibcock passage (41) in the valve body (50), described self-closing bibcock passage (41) runs through pressure channel (49) and drainback passage (36), is provided with the self-closing valve assembly that is used to regulate drainback passage (36) cross section flow in the described self-closing bibcock passage (41); Self-closing bibcock passage (41) is positioned between valve pressure pilot hole (42) and the current limliting bibcock passage (53);
Described oil return pipe assembly is connected with valve oil return pilot hole (39), and described oil inlet assembly is connected with valve pressure pilot hole (42).
2. mis-accelerator pressing limiter according to claim 1 is characterized in that:
Oil return pipe assembly in the described guide type self-resetting oil cylinder comprises back leakage groove (15) and the oil cylinder oil return pilot hole (18) that lays respectively in the oil cylinder seat (10), and described cavity (101), Pilot poppet (13) and the formed gap of guided seat with holes (12), back leakage groove (15) and oil cylinder oil return pilot hole (18) are connected successively; Oil cylinder oil return pilot hole (18) is connected with valve oil return pilot hole (39);
Described guide type self-resetting oil cylinder also comprises petrol storage tank (4); The inner chamber (41) of petrol storage tank (4) is connected with back leakage groove (15);
Oil inlet assembly in the described guide type self-resetting oil cylinder comprises oil cylinder working-pressure pilot hole (17) and pressure oill tank (11), and through hole (121) and cavity (101) in described oil cylinder working-pressure pilot hole (17), pressure oill tank (11), the guided seat with holes (12) are connected successively; Described oil cylinder working-pressure pilot hole (17) is connected with valve pressure pilot hole (42).
3. mis-accelerator pressing limiter according to claim 2 is characterized in that: described piston body (6) is the tubular body of hollow, and piston reset spring (7) is arranged in the inner chamber of piston body (6).
4. mis-accelerator pressing limiter according to claim 3 is characterized in that: between described piston body (6) and the cylinder body end cap (3) sealing member (2) is set; Oil cylinder seat (10) is provided with mounting hole (19).
5. mis-accelerator pressing limiter according to claim 4 is characterized in that: the elastic force of described piston reset spring (7) is greater than the elastic force of guide valve spring (14).
6. mis-accelerator pressing limiter according to claim 5, it is characterized in that: establish the valve seat (35) of passage (351) and the adjusting needle (33) that matches with described passage (351) in described adjustable valve assembly comprises, valve seat (35) is fixedly linked with valve body (50), and the two ends of passage (351) are connected with pressure chamber (34) and drainback passage (36) respectively; Regulate needle (33) by setting nut (32) and block nut (31) and up and down linking to each other of valve body (50);
Described flow-limiting valve assembly comprises continuous current limliting bibcock (48) and flow-limiting valve spring (45), and the current limliting bibcock (48) that horizontally slips in current limliting bibcock passage (53) is used to change pressure channel (49) cross section flow;
Described self-closing valve assembly comprises continuous overpressure self-closing valve bolt (40) and self-closing valve spring (38), and the overpressure self-closing valve bolt (40) that horizontally slips in self-closing bibcock passage (41) is used to change drainback passage (36) cross section flow;
Also be provided with pressure sensor (47) or pressure switch on valve body (50), pressure sensor (47) or pressure switch are connected with pressure channel (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100985479A CN101554869B (en) | 2009-05-14 | 2009-05-14 | Mis-accelerator treading limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100985479A CN101554869B (en) | 2009-05-14 | 2009-05-14 | Mis-accelerator treading limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101554869A CN101554869A (en) | 2009-10-14 |
| CN101554869B true CN101554869B (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100985479A Expired - Fee Related CN101554869B (en) | 2009-05-14 | 2009-05-14 | Mis-accelerator treading limiter |
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| CN (1) | CN101554869B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085661B (en) * | 2013-01-18 | 2016-08-03 | 孙致远 | Automobile accelerator slow-stepping controller |
| CN108749571B (en) * | 2018-06-15 | 2021-02-05 | 河南科技大学 | Rotary type accelerator mistaken-stepping prevention device and vehicle |
-
2009
- 2009-05-14 CN CN2009100985479A patent/CN101554869B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| JP特开平7－329599A 1995.12.19 |
| JP特开平9－175221A 1997.07.08 |
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| Publication number | Publication date |
|---|---|
| CN101554869A (en) | 2009-10-14 |
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