CN103625443B - Car roof active adjustment type air resistance retarding device - Google Patents
Car roof active adjustment type air resistance retarding device Download PDFInfo
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- CN103625443B CN103625443B CN201310521355.0A CN201310521355A CN103625443B CN 103625443 B CN103625443 B CN 103625443B CN 201310521355 A CN201310521355 A CN 201310521355A CN 103625443 B CN103625443 B CN 103625443B
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- 230000000979 retarding effect Effects 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 52
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention discloses a car roof active adjustment type air resistance retarding device which comprises a fixed support, a hydraulic oil way, at least one retarding sub-device and a control system, wherein the retarding sub-device comprises a servo motor, a hydraulic servo valve, a choke blade and a rotating shaft; the control system comprises a vehicle speed sensor, a switch knob, a blade position sensor and a controller for controlling the servo motor and the hydraulic oil circuit to work, wherein the blade position sensor is arranged on the rotating shaft. The invention can not only increase the windward area of the vehicle by automatically adjusting the angle or directly adjusting the angle, realize the slow braking of the vehicle by utilizing the air resistance, but also convert a small control signal into large hydraulic power for adjustment, and has high sensitivity and good rapidity.
Description
Technical field
The present invention relates to a kind of roof active adjustment formula air resistance retarding device, belong to vehicle auxiliary braking field.
Background technology
Brake system is one of important component part of vehicle, is directly connected to the security of the lives and property, comprises running brake, Parking Brake and additional brake.Running brake is vehicle's service, and general employing drum-type or disk-type friction brake mode, be converted into heat energy by the kinetic energy of vehicle, potential energy by friction, realize the object of car retardation or braking.
Along with the progress of vehicle technology and the improvement of road conditions, passenger vehicle efficiency of operation optimized direction towards high speed, large load the same as other commercial vehicles develops, due to square being directly proportional of kinetic energy when vehicle travels and car speed, kinetic energy, potential energy are directly proportional to car load, this just means under same braking condition, the running brake of present passenger vehicle needs to transform more braking energy, carries larger thermal load.Particularly at some special road sections, as length of grade, slope is steep, bend is many mountain road, chaufeur needs by frequently to brake or continuous braking carrys out regulation speed, and makes drg produce a large amount of frictional heat.Because running brake generally adopts air cooling way, and be subject to the restriction of bulk, its heat-sinking capability is failed to obtain essence and is improved, in time a large amount of heats cannot be dissipated, brake temperature can significantly raise, make that its friction factor declines, degree of wear increases the weight of, occur brake efficiency the part even dangerous heat fade phenomenon of total loss.Although the application of anti-blocking brake system, EBD (Electric Brakeforce Distribution) etc. improves stability and the reliability of passenger vehicle braking, but they are very micro-to the superheat effect of drg, heat fade phenomenon remains one of bottleneck problem of puzzlement passenger vehicle brake safe.
At present, some passenger vehicles adopt additional water tank to the type of cooling of overheated drg trickle, and this mode not only wastes water source, damage road surface, and easily causes icy on road in winter, affects the traffic safety of other vehicles; Some passenger vehicles adopt the complemental brake system such as current vortex retarder, hydrodynamic retarder, effectively can shunt the thermal load of running brake, but this mode use, maintenance cost is higher, fail to reach the object of green energy conservation.
Air resistance is one of main resistance to motion of vehicle, square being directly proportional of the wind area of its value and vehicle, the speed of a motor vehicle.When passenger vehicle travels slowly, effectively can increase the resistance to motion of passenger vehicle by increasing its wind area, reduce the burden of frictin braek, and the speed of a motor vehicle is higher, slow effect is more obvious.In the existing vehicle air resistance retarding device relevant information that can inquire about, Chinese patent CN102126486A discloses a kind of method and apparatus of motor vehicle auxiliary speed-reducing.Foregoing invention patent utilization motorcar body steel plate, as assisted deceleration plate, when rate of braking satisfies condition, opens flap simultaneously, by increasing wind resistance of motor vehicle coefficient, air resistance auxiliary machine motor-car is utilized to slow down, thus reduce engine motor-car stopping distance, improve deceleration and stopping performance.But this patent of invention is mainly in automobile braking situation, more than half or when trampling brake pedal rapidly, flap just participates in work at brake-pedal travel, this do not meet passenger vehicle slow time additional brake work requirement; Secondly, vehicle body steel plate is utilized to be arranged on vehicle frame " C post " cant beam place and driving system etc. thereof to be also not suitable for installing on passenger vehicle, using as flap, hydraulically extensible pole.
Summary of the invention
Technical matters to be solved by this invention is the defect overcoming prior art, a kind of roof active adjustment formula air resistance retarding device is provided, it not only can increase vehicle wind area by automatic adjusting angle or direct adjusting angle, air resistance is utilized to realize vehicle slow, effective distributed vehicle continuous braking, the thermal load of frictin braek during long and steep downgrade, prevent heat fade phenomenon from occurring, improve the traffic safety performance of vehicle, reduce the wearing and tearing of frictin braek, and very little control signal can be converted to very large hydraulic power to regulate, highly sensitive, rapidity is good.
The present invention solves the problems of the technologies described above the technical scheme taked: a kind of roof active adjustment formula air resistance retarding device, and it comprises:
One fixed support, it is arranged on roof;
At least one slow sub-device, slow sub-device comprises servomotor, hydraulic efficiency servo-valve, choke blade and S. A., S. A. can be rotated to support on fixed support by fixation kit, choke blade is fixedly connected with on the rotary shaft, the input shaft of hydraulic efficiency servo-valve is connected with servomotor, and the output shaft of hydraulic efficiency servo-valve is connected with S. A.;
One passes into high and low pressure fluid and makes the hydraulic circuit of its work to described hydraulic efficiency servo-valve;
One control system, it controller comprising car speed sensor, switch knob, blade position sensor and control servomotor and hydraulic circuit work, blade position sensor is installed on the rotary shaft, described blade position sensor, car speed sensor are connected with controller with the signal control mouth of switch knob, wherein
Described switch knob, its selection according to operator transmission target anglec of rotation on-off signal or active adjustment on-off signal are to controller;
Described car speed sensor, for collection vehicle vehicle velocity signal and be passed to controller;
Described blade position sensor, for gathering the rotary angle signal of S. A. and being fed back to controller;
Described controller, when receiving the respective objects anglec of rotation on-off signal that shift knob transmits, then sends corresponding target rotary angle signal to servomotor, and transmission oil circuit Continuity signal makes hydraulic efficiency servo-valve work to hydraulic circuit simultaneously; When receiving the active adjustment on-off signal that shift knob transmits, then the speed of a motor vehicle reference signal of the vehicle velocity signal received and setting is compared, according to comparative result, send corresponding anglec of rotation conditioning signal to servomotor, and send corresponding oil circuit Continuity signal simultaneously and make hydraulic efficiency servo-valve work to hydraulic circuit.
Further in order to the service condition of this retarding device can be shown, when incoming signal, the actuating unit work mal of this retarding device, prompting chaufeur is noted, described control system also comprises fault-indicating lamp, and the signal input part of this fault-indicating lamp is connected with controller.
Further, described hydraulic efficiency servo-valve comprises spool, valve pocket, valve barrel, swivel block and fixed block, spool and valve pocket coaxial line, and valve pocket is arranged on the periphery of spool, valve body is arranged on the periphery of valve pocket, swivel block and fixed block are arranged between valve body and valve pocket, and the cavity between valve pocket and valve body is separated into the first epitrochoidal chamber and the second epitrochoidal chamber by swivel block and fixed block, one end of swivel block is fixedly connected with valve pocket, the other end coordinates with valve body is dynamic, one end of fixed block is fixedly connected with valve body, the other end coordinates with valve pocket is dynamic, spool has high-pressure oil duct and back oil road, valve pocket has the first oil duct be connected with the first epitrochoidal chamber and the second oil duct be connected with the second epitrochoidal chamber, described servomotor is fixedly connected with spool, the output shaft of described hydraulic efficiency servo-valve is connected with valve pocket, when servomotor drives valve core rotation, connect gradually or batch (-type) blocked state gradually in batch (-type) between high-pressure oil duct and the first oil duct and between high-pressure oil duct and the second oil duct, back oil road and the second oil duct and also connect gradually or batch (-type) blocked state gradually in batch (-type) between back oil road and the first oil duct thereupon.
Further, described hydraulic circuit comprises high pressure accumulator, petrol storage tank, oil-feed control cock and goes out oil control valve, the high-pressure oil outlet of high pressure accumulator is connected with high-pressure oil duct by oil-feed control cock, described back oil road passes through oil control valve and is connected with petrol storage tank, and described oil-feed control cock is all connected to the signal control mouth of controller with the signal control end going out oil control valve.
Further in order to reduce air resistance when this retarding device does not work, reduce its ineffective energy consumption, described fixed support is provided with deflecting plate, and this deflecting plate is positioned at the front of first slow sub-device.
Further in order to increase the hardness of choke blade, improve its ability to bear under state windward, described choke blade is made up of alloy material.
Fed back to control system to ensure better control in order to the oil liquid pressure that can gather in inflow pipeline further, the outlet line of high pressure accumulator is provided with oil pressure sensor, and oil pressure sensor is connected with control system.
After have employed technique scheme, the present invention is by the multi-disc choke blade of roof, vehicle wind area can be increased by automatic adjusting angle or direct adjusting angle, air resistance is utilized to realize the slow object of passenger vehicle, the thermal load of frictin braek when effective shunting passenger vehicle continuous braking, long and steep downgrade, effectively can improve the heat resistanceheat resistant decline performance of passenger vehicle; Relative to the complemental brake system such as current vortex retarder, hydrodynamic retarder, there is the advantage such as green energy conservation, low cost; Relative to drg trickle mode, have and can not waste water source, negative interaction is not had to road, the advantages such as little are affected on other vehicles; If with engine exhaust and brake with the use of, when the speed of a motor vehicle is higher, provide additional braking force by this air resistance retarding device, when the speed of a motor vehicle is lower, provide additional braking force by engine exhaust and brake, then its effect can be more desirable; In addition, present invention employs hydraulic efficiency servo-valve, its use makes the present invention the control signal that controller is very little can be converted to very large hydraulic power to regulate, and improve the sensitivity of this device, and rapidity is good.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of roof active adjustment formula air resistance retarding device of the present invention;
Fig. 2 is the structural representation of roof active adjustment formula air resistance retarding device of the present invention;
Fig. 3 is the structural representation of hydraulic efficiency servo-valve of the present invention;
Fig. 4 is the structural representation of shift knob of the present invention;
Fig. 5 is the connection diagram of hydraulic circuit of the present invention;
Fig. 6 is the functional block diagram of control system of the present invention.
Detailed description of the invention
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.
As shown in Fig. 1 ~ 6, a kind of roof active adjustment formula air resistance retarding device, it comprises:
One fixed support 2, it is arranged on roof 1 by bolt of rear end plate 7; Fixed support 2 can be made up of alloy material.
At least one slow sub-device, slow sub-device comprises servomotor 9, hydraulic efficiency servo-valve 8, choke blade 3 and S. A. 5, S. A. 5 can be rotated to support on fixed support 2 by fixation kit 4, choke blade 3 is fixedly connected on S. A. 5, the input shaft of hydraulic efficiency servo-valve 8 is connected with servomotor 9, and the output shaft of hydraulic efficiency servo-valve 8 is connected with S. A. 5;
One passes into high and low pressure fluid and makes the hydraulic circuit of its work to hydraulic efficiency servo-valve 8;
One control system, it controller comprising car speed sensor, switch knob 16, blade position sensor 6 and control servomotor 9 and hydraulic circuit work, blade position sensor 6 is arranged on S. A. 5, blade position sensor 6, car speed sensor are connected with controller with the signal control mouth of switch knob 16, wherein
Switch knob 16, its selection according to operator transmission target anglec of rotation on-off signal or active adjustment on-off signal are to controller;
Car speed sensor, for collection vehicle vehicle velocity signal and be passed to controller;
Blade position sensor 6, for gathering the rotary angle signal of S. A. 5 and being fed back to controller;
Controller, when receiving the respective objects anglec of rotation on-off signal that shift knob 16 transmits, then sends corresponding target rotary angle signal to servomotor 9, and transmission oil circuit Continuity signal makes hydraulic efficiency servo-valve 8 work to hydraulic circuit simultaneously; When receiving the active adjustment on-off signal that shift knob 16 transmits, then the speed of a motor vehicle reference signal of the vehicle velocity signal received and setting is compared, according to comparative result, send corresponding anglec of rotation conditioning signal to servomotor 9, and send corresponding oil circuit Continuity signal to hydraulic circuit simultaneously hydraulic efficiency servo-valve 8 is worked.
Control system also comprises fault-indicating lamp, and the signal input part of this fault-indicating lamp is connected with controller.
Hydraulic efficiency servo-valve 8 adopts structure Hydraulic servo technology and electric machine control combined that disclosed in similar Chinese patent CN102562701A, a kind of easy control hydraulic corner self-servo valve proposes.
As shown in Figure 3, hydraulic efficiency servo-valve comprises spool 17, valve pocket 18, valve body 19, swivel block 20 and fixed block 21, spool 17 and valve pocket 18 coaxial line, and valve pocket 18 is arranged on the periphery of spool 17, valve body 19 is arranged on the periphery of valve pocket 18, swivel block 20 and fixed block 21 are arranged between valve body 19 and valve pocket 18, and the cavity between valve pocket 18 and valve body 19 is separated into the first epitrochoidal chamber 19-1 and the second epitrochoidal chamber 19-2 by swivel block 20 and fixed block 21, one end of swivel block 20 is fixedly connected with valve pocket 18, the other end coordinates with valve body 19 is dynamic, one end of fixed block 21 is fixedly connected with valve body 19, the other end coordinates with valve pocket 18 is dynamic, spool 17 has high-pressure oil duct 17-1 and back oil road 17-2, valve pocket 18 has the first oil duct 18-1 be connected with the first epitrochoidal chamber 19-1 and the second oil duct 18-2 be connected with the second epitrochoidal chamber 19-2, servomotor 9 is fixedly connected with spool 17, the output shaft of described hydraulic efficiency servo-valve 8 is connected with valve pocket 18, when servomotor 9 is with movable valve plug 17 to rotate, connect gradually or batch (-type) blocked state gradually in batch (-type) between high-pressure oil duct 17-1 and the first oil duct 18-1 and between high-pressure oil duct 17-1 and the second oil duct 18-2, back oil road 17-2 and also thereupon connecting gradually or batch (-type) blocked state gradually in batch (-type) between the second oil duct 18-2 and back oil road 17-2 and the first oil duct 18-2.Hydraulic efficiency servo-valve 8 is according to the work of servomotor 9 rotational angle, choke blade 3 is made to open or close certain angle, servomotor 9 adopts volume little, moment is large, the steering wheel of corner is controlled by duty cycle signals, time initial, spool 17 and valve pocket 18 are in meta, spool 17 and valve pocket 18 are closed, fluid can not enter the cavity between valve body 19 and valve pocket 18, fluid in valve body 19 is by airtight, valve body 19 self-locking, choke blade 3 is made to be fixed as certain angle, when controller sends an angular signal to steering wheel, steering wheel turns over an angle, valve port between spool 17 and valve pocket 18 is opened, if now pressure oil liquid flows to the first epitrochoidal chamber 19-1 of valve body 19, second epitrochoidal chamber 19-2 communicates with oil return circuit, the high pressure oil of the first epitrochoidal chamber 19-1 produces clws thrust on swivel block 20 makes swivel block rotate, thus make valve pocket 18 drive choke blade 3 to rotate by output shaft, vice versa.Along with the rotation of valve pocket 18, the opening between itself and spool 17 diminishes gradually, until close, thus realize valve pocket 18 pieces of tracking of the positions to spool 17, namely the corner of hydraulic efficiency servo-valve output shaft changes with steering wheel rotational angle.
Energy when passenger vehicle is braked by braking energy regeneration device stores with the form of hydraulic energy, power is provided for giving hydraulic corner servovalve 8, the structure that disclosed in similar Chinese patent CN202491793U, a kind of energy regeneration device of drive-by-wire proposes can be adopted, when by brake pedal position sensor and wheel speed sensors, controller judges that automobile is as braking or deceleration regime, and when meeting Brake energy recovery condition, then sending instruction makes magnetic clutch engage, drive hydraulic oil pump/motor operations, braking energy is stored in low pressure accumulator and high pressure accumulator.Passenger vehicle is when travelling slowly, and braking energy regeneration device is in running order, can provide certain resistance to motion on the one hand, play the effect of auxiliary braking; Effectively can reclaim braking energy, for air resistance retarding device provides power on the one hand.Here the larger high pressure accumulator of pressure is adopted to provide hydraulic power to hydraulic corner servovalve, to guarantee in bus driving process adjusting choke blade 3 angle.
As shown in Figure 5, hydraulic circuit comprises high pressure accumulator 11, petrol storage tank 14, oil-feed control cock 12 and goes out oil control valve 15, the high-pressure oil outlet of high pressure accumulator 11 is connected with high-pressure oil duct 17-1 by oil-feed control cock 12, back oil road 17-2 passes through oil control valve 15 and is connected with petrol storage tank 14, and oil-feed control cock 12 is all connected to the signal control mouth of controller with the signal control end going out oil control valve 15.
Fed back to control system to ensure better control in order to the oil liquid pressure that can gather in inflow pipeline, the outlet line of high pressure accumulator 11 is provided with oil pressure sensor 13, oil pressure sensor 13 is connected with control system
In order to reduce air resistance when this retarding device does not work, reducing its ineffective energy consumption, as shown in Figure 2, fixed support 2 being provided with deflecting plate 10, and this deflecting plate 10 is positioned at the front of first slow sub-device.Deflecting plate 10, in streamline construction, is positioned at this device foremost.
Choke blade 3 is made up of alloy material.
Switch knob 16 built-in-potential meter, be installed in operator's compartment, be provided with five positions, comprise angular adjustment pattern and active adjustment pattern, blade can be respectively close, open 30 degree, open 60 degree, open 90 degree and active adjustment pattern, select master mode or blade angle systems for chaufeur.Blade position sensor 6 adopts potentiometric pick-up, be installed on S. A. 5 one end, its slide plate rotates with S. A. 5, pass to controller blade opening angle signal, controller receiving key knob signal, if angular adjustment pattern, then send the angle that instruction makes set by its rotating switch knob to servomotor 9, the electromagnetic valve of oil-feed simultaneously 12, go out solenoid 15 must conduct, high-voltage oil liquid in high pressure accumulator 11 communicates with the oil inlet of hydraulic efficiency servo-valve 8, the oil outlet of hydraulic efficiency servo-valve 8 communicates with fuel tank, choke blade 3 is driven to be opened into set angle by hydraulic efficiency servo-valve 8 output shaft, if active adjustment pattern, then according to the set speed of a motor vehicle, by servomotor 9, the angle that active adjustment choke blade 3 is opened in bus driving process: if actual vehicle speed is greater than the setting speed of a motor vehicle, then increase choke blade 3 opening angle, if actual vehicle speed is less than the setting speed of a motor vehicle, then reduce choke blade 3 opening angle, if choke blade 3 opening angle has been maxim, then engine exhaust and brake or running brake participation work.
Above-described specific embodiment; technical matters, technical scheme and beneficial effect that the present invention solves are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a roof active adjustment formula air resistance retarding device, it is characterized in that, it comprises:
One fixed support (2), it is arranged on roof (1);
At least one slow sub-device, slow sub-device comprises servomotor (9), hydraulic efficiency servo-valve (8), choke blade (3) and S. A. (5), S. A. (5) can be rotated to support on fixed support (2) by fixation kit (4), choke blade (3) is fixedly connected on S. A. (5), the input shaft of hydraulic efficiency servo-valve (8) is connected with servomotor (9), and the output shaft of hydraulic efficiency servo-valve (8) is connected with S. A. (5);
One passes into high and low pressure fluid and makes the hydraulic circuit that hydraulic efficiency servo-valve (8) works to described hydraulic efficiency servo-valve (8);
One control system, it controller comprising car speed sensor, switch knob (16), blade position sensor (6) and control servomotor (9) and hydraulic circuit work, blade position sensor (6) is arranged on S. A. (5), described blade position sensor (6), car speed sensor are connected with controller with the signal control mouth of switch knob (16), wherein
Described switch knob (16), its selection according to operator transmission target anglec of rotation on-off signal or active adjustment on-off signal are to controller;
Described car speed sensor, for collection vehicle vehicle velocity signal and be passed to controller;
Described blade position sensor (6), for gathering the rotary angle signal of S. A. (5) and being fed back to controller;
Described controller, when receiving the respective objects anglec of rotation on-off signal that switch knob (16) transmits, then send corresponding target rotary angle signal to servomotor (9), and transmission oil circuit Continuity signal makes hydraulic efficiency servo-valve (8) work to hydraulic circuit simultaneously; When receiving the active adjustment on-off signal that switch knob (16) transmits, then the speed of a motor vehicle reference signal of the vehicle velocity signal received and setting is compared, according to comparative result, send corresponding anglec of rotation conditioning signal to servomotor (9), and send corresponding oil circuit Continuity signal to hydraulic circuit simultaneously hydraulic efficiency servo-valve (8) is worked.
2. roof active adjustment formula air resistance retarding device according to claim 1, it is characterized in that: described control system also comprises fault-indicating lamp, the signal input part of this fault-indicating lamp is connected with controller.
3. roof active adjustment formula air resistance retarding device according to claim 1, it is characterized in that: described hydraulic efficiency servo-valve comprises spool (17), valve pocket (18), valve body (19), swivel block (20) and fixed block (21), spool (17) and valve pocket (18) coaxial line, and valve pocket (18) is arranged on the periphery of spool (17), valve body (19) is arranged on the periphery of valve pocket (18), swivel block (20) and fixed block (21) are arranged between valve body (19) and valve pocket (18), and the cavity between valve pocket (18) and valve body (19) is separated into the first epitrochoidal chamber (19-1) and the second epitrochoidal chamber (19-2) by swivel block (20) and fixed block (21), one end of swivel block (20) is fixedly connected with valve pocket (18), the other end coordinates with valve body (19) is dynamic, one end of fixed block (21) is fixedly connected with valve body (19), the other end coordinates with valve pocket (18) is dynamic, spool (17) has high-pressure oil duct (17-1) and back oil road (17-2), valve pocket (18) has the first oil duct (18-1) be connected with the first epitrochoidal chamber (19-1) and the second oil duct (18-2) be connected with the second epitrochoidal chamber (19-2), described servomotor (9) is fixedly connected with spool (17), the output shaft of described hydraulic efficiency servo-valve (8) is connected with valve pocket (18), when servomotor (9) band movable valve plug (17) rotates, connect gradually or batch (-type) blocked state gradually in batch (-type) between high-pressure oil duct (17-1) and the first oil duct (18-1) and between high-pressure oil duct (17-1) and the second oil duct (18-2), back oil road (17-2) and the second oil duct (18-2) and also connect gradually or batch (-type) blocked state gradually in batch (-type) between back oil road (17-2) and the first oil duct (18-2) thereupon.
4. roof active adjustment formula air resistance retarding device according to claim 3, it is characterized in that: described hydraulic circuit comprises high pressure accumulator (11), petrol storage tank (14), oil-feed control cock (12) and go out oil control valve (15), the high-pressure oil outlet of high pressure accumulator (11) is connected with high-pressure oil duct (17-1) by oil-feed control cock (12), described back oil road (17-2) passes through oil control valve (15) and is connected with petrol storage tank (14), described oil-feed control cock (12) is all connected to the signal control mouth of controller with the signal control end going out oil control valve (15).
5. roof active adjustment formula air resistance retarding device according to claim 1, is characterized in that: described fixed support (2) is provided with deflecting plate (10), and this deflecting plate (10) is positioned at the front of first slow sub-device.
6. roof active adjustment formula air resistance retarding device according to claim 1, is characterized in that: described choke blade (3) is made up of alloy material.
7. roof active adjustment formula air resistance retarding device according to claim 4, is characterized in that: the outlet line of described high pressure accumulator (11) is provided with oil pressure sensor (13), and oil pressure sensor (13) is connected with control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521355.0A CN103625443B (en) | 2013-10-30 | 2013-10-30 | Car roof active adjustment type air resistance retarding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521355.0A CN103625443B (en) | 2013-10-30 | 2013-10-30 | Car roof active adjustment type air resistance retarding device |
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| Publication Number | Publication Date |
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| CN103625443A CN103625443A (en) | 2014-03-12 |
| CN103625443B true CN103625443B (en) | 2015-12-16 |
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| CN201310521355.0A Active CN103625443B (en) | 2013-10-30 | 2013-10-30 | Car roof active adjustment type air resistance retarding device |
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| CN113043819A (en) * | 2019-12-27 | 2021-06-29 | 华为技术有限公司 | Roof adjusting system, vehicle body, vehicle, and roof adjusting method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2942142A1 (en) * | 1979-10-18 | 1981-04-30 | Karl Heinrich 4811 Leopoldshöhe Wiens | Vehicle with braking flap on roof - which is pivoted up when normal braking occurs at high speed |
| DE3837730A1 (en) * | 1987-11-06 | 1989-05-24 | Heung Jong Park | Running control device for a vehicle |
| CN1781780A (en) * | 2003-12-29 | 2006-06-07 | 居永明 | Electric automobile with braking wind wing |
| CN201808550U (en) * | 2010-07-06 | 2011-04-27 | 邓昌文 | Speed-reducing umbrella for emergency brake when car runs at high speed |
| CN102529914A (en) * | 2011-12-29 | 2012-07-04 | 上海庞丰交通设备科技有限公司 | Air-powered braking roof wing device |
| CN203543922U (en) * | 2013-10-30 | 2014-04-16 | 江苏理工学院 | Car roof active adjustment type air resistance retarding device |
-
2013
- 2013-10-30 CN CN201310521355.0A patent/CN103625443B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2942142A1 (en) * | 1979-10-18 | 1981-04-30 | Karl Heinrich 4811 Leopoldshöhe Wiens | Vehicle with braking flap on roof - which is pivoted up when normal braking occurs at high speed |
| DE3837730A1 (en) * | 1987-11-06 | 1989-05-24 | Heung Jong Park | Running control device for a vehicle |
| CN1781780A (en) * | 2003-12-29 | 2006-06-07 | 居永明 | Electric automobile with braking wind wing |
| CN201808550U (en) * | 2010-07-06 | 2011-04-27 | 邓昌文 | Speed-reducing umbrella for emergency brake when car runs at high speed |
| CN102529914A (en) * | 2011-12-29 | 2012-07-04 | 上海庞丰交通设备科技有限公司 | Air-powered braking roof wing device |
| CN203543922U (en) * | 2013-10-30 | 2014-04-16 | 江苏理工学院 | Car roof active adjustment type air resistance retarding device |
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| CN103625443A (en) | 2014-03-12 |
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