CN1730324A - Method for vehicle parking and braking and braking group drive system - Google Patents
Method for vehicle parking and braking and braking group drive system Download PDFInfo
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- CN1730324A CN1730324A CN 200510091898 CN200510091898A CN1730324A CN 1730324 A CN1730324 A CN 1730324A CN 200510091898 CN200510091898 CN 200510091898 CN 200510091898 A CN200510091898 A CN 200510091898A CN 1730324 A CN1730324 A CN 1730324A
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Abstract
The invention discloses a meaning for automobile parking brake; and a brake combination transmission device. The device carries out brake by rapid gearing which superimpose the mechanical type and hydraulic type up. When the automobile gets a certain braking force, it knocks off the hydrodynamic gear and uses the mechanical gear only, and carries out brake with force increased by low speed drive. When the braking arrangement of the automobile loses debugging and maintenance for a long time, it can superpose the throws of the brake effect provided by the control stick up to brake the automobile.
Description
Technical field
The present invention relates to be used for a kind of method of vehicle braking during standstill, the invention still further relates to a kind of braking combined driving type device
Background technology
Present vehicle holding brake device generally is to utilize the transmission of leverage single utilization mechanical type, realizes braking during standstill, and application force and the effect stroke that brake-applying handle repeatedly can not be implemented to brake stack up, and together vehicle are implemented brake action.Limited because of the space that the muscle power and the driving of chaufeur are stopped up, generally all can not car brakeing under steam be stopped, as often not adjusting and safeguarding, on the ramp vehicle that has stopped, can not stay its braking.Chinese patent notification number 200420049816.5 discloses " a kind of device that is used for automobile parking or emergency brake " speed in order to accelerate to implement to brake, it is to have utilized a plurality of hydraulic main cylinders to implement brake action simultaneously, and in order to increase breaking force, it has reduced hydraulic main cylinder and has implemented brake action, such design, productive costs is than higher, also is not suitable for the usefulness of the vehicle refitting that dispatches from the factory now.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, be provided for a kind of method of vehicle braking during standstill, in order to realize the invention provides method, the present invention also provides a kind of braking combined driving type device.
When this device does not also have brake action in car brakeing mechanism, under the also smaller situation of its gearing power it can with mechanical type and fluid pressure type transmission with the mode of superposing type simultaneously fast transmission implement brake action, when breaking force is bigger, it can deduct the fluid pressure type transmission again and utilize mechanical type to come transmission at a slow speed separately, to increase the breaking force of giving car brakeing mechanism.And can with joystick at short notice the return continuous several times repeat to implement the effect stroke of braking to vehicle, stack up and implement braking to vehicle system.Thereby the breaking force that has solved the holding brake device that generally uses now is big inadequately and the short difficult problem of adjustment maintenance intervals.
The invention provides a kind of method that is used for the vehicle braking during standstill is: when brake activation lever is implemented brake action to vehicle, its joystick manipulation end from its brake off state stop treat that the position is to the distance for the treatment of to move in the band of position of stopping of implementing braking mode, give the ratio of the stroke distances of car brakeing mechanism for implementing brake action with actual transmission in the time with it, can increase with the increase that joystick imposes on car brakeing mechanism application force, impose on reducing of car brakeing mechanism application force and reduce with joystick; Brake activation lever is given the effect stroke of the enforcement braking that car brakeing mechanism applies, and can increase with the increase that its joystick repeats to implement the number of times of brake action motion to vehicle at short notice.
Braking combined driving type device provided by the invention comprises: steel wire tow line; With its steel wire tow line overcoat: an end of its steel wire tow line links to each other with joystick, the other end pass stay cord overcoat limiting frame, steel wire tow line first overcoat, limiting valve control stalk, the steel wire tow line first overcoat control stalk that links to each other with the limiting valve control stalk, the steel wire tow line second overcoat control stalk, at last pass steel wire tow line second overcoat, the brake lever with car brakeing mechanism links to each other again; Its steel wire tow line overcoat has been divided into several sections, and by steel wire tow line first overcoat and steel wire tow line second overcoat and form, and it prolongs the style of work total length with respect to steel wire tow line, can divide the variation of cylinder length to change with hydraulic pressure; This device also comprises the hydraulic main cylinder that links to each other with steel wire tow line; One end withstands on the steel wire tow line first overcoat control stalk that can control steel wire tow line first overcoat and steel wire tow line relative position, the other end withstands on can control steel wire tow line second overcoat and steel wire tow line relative position, and the hydraulic pressure on the steel wire tow line second overcoat control stalk divides cylinder; Be serially connected in the limiting valve in the capstan; Be serially connected in the brake off valve in second back liquid pipeline; Be arranged on and be higher than the fluid reservoir that hydraulic main cylinder and hydraulic pressure divide cylinder position; And some corresponding liquid-transport pipe-lines.
Fig. 1 is the structural principle lateral plan of the present invention in the enforcement braking mode.
Fig. 2 is the structural principle lateral plan of the present invention at the brake off state.
Fig. 3 is the structural principle side-looking enlarged drawing of driving system of the present invention at the brake off state.
Fig. 4 is the structural principle enlarged drawing of brake off valve of the present invention.
Fig. 5 is the structural principle enlarged drawing of limiting valve of the present invention.
In last figure: 1 joystick manipulation end, 2 brake off buttons, 3 ratchets, 4 teeth fan, 5 fixed supports, 5.1 stay cord overcoat limiting frame, 6 steel wire tow lines, 6.1 steel wire tow lines, first overcoat, 6.2 steel wire tow line second overcoat, 6.3 the steel wire tow line first overcoat control stalk, 6.31 limiting valve control stalks, 6.4 steel wire tow lines, the second overcoat control stalk, 6.41 strut bar, 6.5 the hydraulic main cylinder drive spindle, 6.51 hydraulic-driven connecting rods, 6.6 hydraulic main cylinders, 6.61 master cylinder feed liquor check valve, 6.62 master cylinder fluid check valve, 6.7 hydraulic pressure divide cylinder, 6.71 fens cylinder feed liquor check valves, 6.72 divide the cylinder tapping channel, 6.8 steel wire tow line delivery of energy card, 6.9 fluid reservoiies, 6.10 retracing springs, 7 brake off valves, 7.1 the high pressure road, 7.2 times fluid passages, 7.3 valve seats, 7.4 seal ring, 7.5 the bowl seal film, 7.6 spool pilot bars, 7.7 brake off control buttons, 7.8 check valve, 7.9 the one-way sealing spring, 7.10 screw shutoff, 8 limiting valves, 8.1 pressure limiting spool, 8.2 return fluid passage, 8.3 pressure limiting springs, 8.4 pressurization imports, 8.5 pressurization outlet, 8.6 the pressure limiting push rod, 8.7 push rod seal rings, 8.8 valve seats, 8.9 check valve seal ring, 8.10 cap shape check valve, 8.11 screw shutoff, 8.12 locating dowel pins, 8.13 be close to, 9 car brakeing mechanisms, 11 fluid pipelines, 12 capstans, 13 first back liquid pipelines, 14 second back liquid pipelines, A steel wire tow line overcoat one end and the stay cord overcoat limiting frame contact that joins, B steel wire tow line overcoat be end and the car brakeing mechanism contact that joins in addition, E steel wire tow line one end and the joystick contact that joins, the C steel wire tow line is end and the car brakeing mechanism contact that joins in addition, and F joystick manipulation end stops treating the position the brake off state, and G joystick manipulation end stops treating the position what implement the braking mode zone.
The specific embodiment
The present invention is illustrated in greater detail with concrete embodiment below in conjunction with accompanying drawing;
The invention provides a kind of method that is used for the vehicle braking during standstill is: when vehicle braked joystick manipulation end 1 is implemented brake action to vehicle, manipulatable end stops treating position F from its brake off state, implement the distance of stopping treating the motion of regional location G place of braking mode to it, its C point is drawn close and the ratio of the ranging coverage implementing to brake for car brakeing mechanism 9 with it to the B point with actual transmission in the time, can increase with the increase that joystick imposes on the application force of car brakeing mechanism 9, impose on the reducing and reduce of application force of car brakeing mechanism 9 with joystick; Its joystick imposes on the effect stroke that car brakeing mechanism 9 implements brake actions, can repeat again to implement the increase of the number of times that brake action moves and increase to vehicle with its joystick return and do not stop treating of a specified duration in its position, brake off state F place repeatedly.
The car brakeing driving device that is used for provided by the invention comprises: an end links to each other with joystick 1, and the other end passes stay cord overcoat limiting frame 5.1, steel wire tow line first overcoat 6.1, limiting valve control stalk 6.31, the steel wire tow line first overcoat control stalk 6.3 that links to each other with limiting valve control stalk 6.31, the steel wire tow line second overcoat control stalk 6.4, passes the steel wire tow line 6 that steel wire tow line second overcoat 6.2 links to each other with the C point of the brake lever of car brakeing mechanism 9 at last again; Be divided into several sections and they and prolong style of work total length with respect to steel wire tow line 6, the distance that B is ordered on from the A point on the stay cord overcoat limiting frame 5.1 to stop mechanism 9, can divide the length variations of cylinder 6.7 to change with hydraulic pressure, by steel wire tow line first overcoat (6.1) and steel wire tow line second overcoat (6.2) total the steel wire tow line overcoat of forming; The hydraulic main cylinder 6.6 that links to each other with steel wire tow line middle part delivery of energy card 6.8 by hydraulic main cylinder drive spindle 6.5 and hydraulic-driven connecting rod 6.51; One end withstands on the steel wire tow line first overcoat control stalk (6.3) of the relative position that can control steel wire tow line first overcoat (6.1) and steel wire tow line (6), holds the hydraulic pressure on the steel wire tow line second overcoat control stalk (6.4) that withstands on the relative position that can control steel wire tow line second overcoat (6.2) and steel wire tow line (6) to divide cylinder (6.7) in addition; This device also comprises, is serially connected in the limiting valve 8 in the capstan 12; Be serially connected in the brake off valve 7 in second back liquid pipeline 14; Be arranged on and be higher than the fluid reservoir 6.9 that hydraulic main cylinder 6.6 and hydraulic pressure divide cylinder 6.7 positions; And some corresponding transfusion connecting tubes.
Described limiting valve 8, have the little logical circular hole of the big end diameter of an end diameter in its valve body, a step in the logical circular hole of the major diameter of the logical circular hole transition position of size diameter is made as valve seat 8.8, the section that is provided with it in the logical circular hole of the middle minor diameter of valve seat 8.8 is " ten " font, the pressure limiting spool 8.1 that can lead and can allow braking liquid pass through; Be provided with cap shape check valve 8.10 in the logical circular hole of the major diameter of logical this end of circular hole of the major diameter of pressure limiting spool 8.1; Cap shape check valve 8.10 and valve seat 8.8 adjacent one sides are provided with check valve seal ring 8.9; The sealing function spring power that another side is provided with it has the pressure limiting spring 8.3 more than 10 kilograms; Contact with cap shape check valve 8.10 other end of an end of pressure limiting spring 8.3 is provided with and is provided with the screw that passage be back fluid passage 8.2 in the middle of it and blocks up 8.11.Be provided with in the logical circular hole of the minor diameter that one end of described pressure limiting spool 8.1 guiding is adjacent, have part to be exposed to pressure limiting push rod 8.6 outside the valve body, described pressure limiting push rod 8.6 be provided with push rod seal ring 8.7 between valve body contacts; Pressure limiting push rod 8.6 is provided with locating dowel pin 8.12.The wall portion of described pressure limiting spool 8.1 guiding pipeline sections leads to transfusion and is close to 8.13, communicates with capstan 12 by pressurization import 8.4 and pressurization outlet 8.5.
Described brake off valve 7: offer the little logical circular hole of the big middle diameter of two ends diameter in its valve body, a step in the logical circular hole of the major diameter of a logical circular hole transition position of size diameter is made as valve seat 7.3 therein; The section that is provided with it in the middle of the valve seat 7.3 in the logical circular hole of minor diameters is " ten " font, can lead and can allow braking liquid pass through, and its length is longer than the spool pilot bar 7.6 of the logical circular hole length of minor diameter; Spool pilot bar 7.6 leads in the circular hole with valve seat 7.3 adjacent these end major diameters, is provided with the check valve 7.8 that links to each other with spool pilot bar 7.6; Check valve 7.8 and valve seat 7.3 adjacent one sides are provided with seal ring 7.4; Another side is provided with one-way sealing spring 7.9; Contact with check valve 7.8 other end of an end of one-way sealing spring 7.9 is provided with and has logical circular hole in the middle of it screw shutoff 7.10 that to be high pressure road 7.1 divide cylinder 6.7 to link to each other with hydraulic pressure; In the logical circular hole of the major diameter of one end size diameter hole transition position of described spool pilot bar 7.6 guiding, be provided with the bowl seal film 7.5 that cuts off mutually with the external world with logical circular hole of minor diameter and spool pilot bar 7.6; Contact with spool pilot bar 7.6 another side of one side of bowl seal film 7.5 is provided with, and has part to be exposed to brake off control button 7.7 outside the valve body; The wall portion of the guide duct of described spool pilot bar 7.6 leads to time fluid passage 7.2 that links to each other with fluid reservoir 6.9.
More described corresponding transfusion connecting tube comprises: the fluid pipeline 11 that fluid reservoir 6.9 links to each other with the master cylinder feed liquor check valve 6.61 of hydraulic main cylinder 6.6; The capstan 12 that the master cylinder fluid check valve 6.62 and the hydraulic pressure of hydraulic main cylinder 6.6 divides the branch cylinder feed liquor check valve 6.71 of cylinder 6.7 to be connected; Be connected in first back liquid pipeline 13 that fluid passage 8.2 is connected with fluid reservoir 6.9 that returns of limiting valve 8 in the capstan 12; Second back liquid pipeline 14 that pressure divides the branch cylinder tapping channel 6.72 of cylinder 6.7 to be connected with fluid reservoir 6.9.
The principle of work of above-mentioned braking combined driving type device is such:
1, implement braking:
Come into effect glancing impact, with the stop position F of joystick manipulation end 1 from following brake off state, the stop area position G that up pulls to braking mode leans on, at this moment the brake activation lever end contact E place that links to each other with steel wire tow line 6 in addition, with the join relative distance at contact A place of stay cord overcoat limiting frame 5.1 and steel wire tow line first overcoat 6.1, a certain proportion of variation also takes place thereupon, by the steel wire tow line delivery of energy card 6.8 on the steel wire tow line 6, hydraulic-driven connecting rod 6.51, and the transmission of hydraulic main cylinder drive spindle 6.5, braking liquid in the promotion hydraulic main cylinder 6.6 is through master cylinder fluid check valve 6.62, capstan 12, transfusion in limiting valve 8, because at this moment the gearing power of steel wire tow line 6 is also smaller, cap shape check valve 8.10 is still closed valve under the application force of the pressure limiting spring 8.3 that bigger elastic force is arranged, hydraulic main cylinder 6.6 is to limiting valve 8 defeated next brakings liquid, all being input to hydraulic pressure through capstan 12 divides in the cylinder 6.7 and has gone, cause hydraulic pressure to divide the cylinder body top of cylinder 6.7 1 ends and the distance growth that other holds piston tip like this, cause the relative distance of steel wire tow line first overcoat control stalk 6.3 and the steel wire tow line second overcoat control stalk 6.4, also divide the distance at cylinder 6.7 two ends to increase with hydraulic pressure, cause steel wire tow line first overcoat 6.1 and stay cord overcoat limiting frame 5.1 contacted A places so again, prolong steel wire tow line 6 and all divide the distance at cylinder 6.7 two ends to increase, add the distance that the point of the C on the stop mechanism 9 is spurred to the B point by steel wire tow line 6 with hydraulic pressure to the join total length at B place, contact of another section steel wire tow line second overcoat 6.2 and car brakeing mechanism 9.Will cause the variable in distance of two controlling point B of car brakeing mechanism 9 like this, can change with the several times of the variable in distance at A place on the stay cord overcoat limiting frame 5.1 greater than the steel wire tow line 6 contact E place that links to each other with brake activation lever to C.When car brakeing mechanism 9 reach certain brake action is arranged after, the gearing power of steel wire tow line 6 will increase thereupon, when increasing to certain value, force under the effect of limiting valve control stalk 6.31 at steel wire tow line first overcoat 6.1, limiting valve control stalk 6.31 forces the pressure limiting push rod 8.6 of limiting valve 8 by pressure limiting spool 8.1 again, make bonnet valve 8.10 can overcome the application force of pressure limiting spring 8.3, bonnet valve 8.10 is backed down, and the braking liquid that allows hydraulic main cylinder 6.6 press to come is pressed in the fluid reservoir 6.9 and goes through being close to 8.13 fluid passages, 8.2 one the first back liquid pipelines 13.At this moment car brakeing mechanism 9 is given in brake activation lever transmission, implement the stroke of brake action, can only implement braking by steel wire tow line 6 with the low speed transmission separately, applying to joystick manipulation end 1 under the situation of same application force like this, implement braking for car brakeing mechanism 9 by steel wire tow line 6 transmissions separately, than the breaking force of steel wire tow line and the transmission simultaneously of steel wire tow line overcoat several times greatly, so again brake activation lever 1 is upwards drawn with strength again, well imagine that at this moment joystick has much for the application force of car brakeing mechanism, at this moment under the effect of ratchet 3 and tooth fan 4, brake activation lever 1 and some stop mechanisms thereof are locked in this braking mode seat.Because divide the braking liquid that flows out in the cylinder 6.7 all will pass through from hydraulic pressure, divide cylinder feed liquor check valve 6.71 or for the check valve principle, brake off valve 7 could go in fluid reservoir 6.9, and the braking liquid of brake off, be to back down by the check valve of external application force with brake off valve 7, and braking liquid is a contrary check valve and flowing out, and then goes in the fluid reservoir 6.9, thus when vehicle once being slided automatically the unlikely in any case of week once braking it by Parking Brake.
Cross for a long time not adjustment and maintenance as stop mechanism, once can not be good with brake activation lever 1 car brakeing to drawing, can be with joystick manipulation end 1 again to the stop position F of brake off state direction return, but had better not be returned to stop F position, and then the direction of the stop position G of joystick manipulation end 1 braking mode upward drawn, what begin to draw at this moment because also there is not breaking force, hydraulic main cylinder 6.6 presses the braking liquid of coming all to be input to hydraulic pressure through capstan 12 again to divide in the cylinder 6.7 and gone, cause steel wire tow line overcoat A point so again, prolong the total length continuation growth of steel wire tow line 6 to B point place, when its length rises to certain value, force under the effect of limiting valve control stalk 6.31 at steel wire tow line first overcoat 6.1, limiting valve control stalk 6.31 forces the pressure limiting push rod 8.6 of limiting valve 8 by pressure limiting spool 8.1 bonnet valve 8.10 to be backed down again, the braking liquid that allows hydraulic main cylinder 6.6 press to come returns fluid passage 8.2-first back liquid pipeline 13 and is pressed in the fluid reservoir 6.9 and goes through being close to 8.13-, and then brake activation lever 1 upwards drawn with strength, at this moment under the effect of ratchet 3 and tooth fan 4, brake activation lever 1 and some stop mechanisms thereof are locked in this braking mode, also not good as for the second time the brake activation lever return being implemented once more braking car brakeing, can also execute braking until car brakeing is lived as the above-mentioned one or many that repeats.
2, brake off: earlier joystick manipulation end 1 is pulled upwardly a little, depress the brake off button 2 of joystick termination again, make ratchet 3 leave tooth fan 4 by pipe link, shift joystick 1 onto the brake off position downwards then, just braking substantially like this, the worker has been disengaged.At this moment under the application force of some pull back springs, cause hydraulic main cylinder drive spindle 6.5 to promote the brake off control button 7.7 of brake off valve 7, force bowl seal film 7.5 and spool pilot bar 7.6 to overcome the very little pressure of one-way sealing spring 7.9, to there be the check valve 7.8 of hydraulic coupling to back down substantially, allow hydraulic pressure divide braking liquid in the cylinder 6.7 from second back liquid pipeline 14, high pressure road 7.1 in the screw shutoff 7.10 of brake off valve 7, check valve 7.8, returning fluid passage 7.2 gets back to then in the fluid reservoir 6.9 and goes, allow the gap at each position of car brakeing mechanism continue to increase, thereby allow the vehicle freedom of movement.
Claims (5)
1. a kind of method that is used for the vehicle braking during standstill, it is characterized in that: when brake activation lever is implemented brake action to vehicle, its joystick manipulation end stops treating the position from its brake off state, to the distance of stopping treating band of position motion of implementing braking mode, give the ratio of move distance of the enforcement brake action of car brakeing mechanism with actual transmission in the time with it, can increase with the increase that joystick imposes on the application force of car brakeing mechanism, impose on the reducing and reduce of application force of car brakeing mechanism with joystick; Brake activation lever is given the effect stroke of the enforcement braking that car brakeing mechanism applies, and can increase with the increase that its joystick repeats to implement the number of times of brake action motion to vehicle at short notice.
2. one kind is used for vehicle braked combined driving type device, comprising: steel wire tow line (6); With its steel wire tow line overcoat, it is characterized in that: an end of its steel wire tow line (6) links to each other with joystick (1), the other end pass stay cord overcoat limiting frame (5.1), steel wire tow line first overcoat (6.1), limiting valve control stalk (6.31), the steel wire tow line first overcoat control stalk (6.3) that links to each other with limiting valve control stalk (6.31), the steel wire tow line second overcoat control stalk (6.4), at last pass steel wire tow line second overcoat (6.2), the brake lever with car brakeing mechanism (9) links to each other again; Its steel wire tow line overcoat has been divided into several sections, and by steel wire tow line first overcoat (6.1) and steel wire tow line second overcoat (6.2) and form, and it prolongs the style of work total length with respect to steel wire tow line (6), can divide the variation of cylinder (6.7) length to change with hydraulic pressure; This device also comprises the hydraulic main cylinder (6.6) that links to each other with steel wire tow line (6); One end withstands on the steel wire tow line first overcoat control stalk (6.3) that can control steel wire tow line first overcoat (6.1) and steel wire tow line (6) relative position, the other end withstands on can control steel wire tow line second overcoat (6.2) and steel wire tow line (6) relative position, and the hydraulic pressure on the steel wire tow line second overcoat control stalk (6.4) divides cylinder (6.7); Be serially connected in the limiting valve (8) in the capstan (12); Be serially connected in the brake off valve (7) in second back liquid pipeline (14); Be arranged on and be higher than the fluid reservoir (6.9) that hydraulic main cylinder (6.6) and hydraulic pressure divide cylinder (6.7) position; And some corresponding liquid-transport pipe-lines.
3. a kind of braking during standstill combined driving type device that is used for vehicle according to claim 2, it is characterized in that: described limiting valve (8), have the little logical circular hole of the big end diameter of an end diameter in its valve body, a step in the logical circular hole of the major diameter of the logical circular hole transition position of size diameter is made as valve seat (8.8); The section that is provided with it in the logical circular hole of the middle minor diameter of valve seat (8.8) is " ten " font, the pressure limiting spool (8.1) that can lead and can allow braking liquid pass through; Be provided with the cap shape check valve (8.10) that is attached thereto in the logical circular hole of the major diameter of logical this end of circular hole of the major diameter of pressure limiting spool (8.1); The one side that cap shape check valve (8.10) is adjacent with valve seat (8.8) is provided with check valve seal ring (8.9); Another side is provided with pressure limiting spring (8.3); Contact with cap shape check valve (8.10) other end of an end of pressure limiting spring (8.3) is provided with and is provided with the screw that passage be back fluid passage (8.2) in the middle of it and blocks up (8.11); Be provided with in the logical circular hole of the minor diameter that described pressure limiting spool (8.1) guiding one end is adjacent, there is part to be exposed to pressure limiting push rod (8.6) outside the valve body, is provided with push rod seal ring (8.7) between the hole wall that described pressure limiting push rod (8.6) and minor diameter lead to circular hole contacts; Described pressure limiting push rod (8.6) is provided with locating dowel pin (8.12); The wall portion of described pressure limiting spool (8.1) pilot hole section leads to transfusion and is close to (8.13) and communicates with this device capstan (12) by pressurization import (8.4) and pressurization outlet (8.5).
4. a kind of braking during standstill combined driving type device that is used for vehicle according to claim 2, it is characterized in that: offer the little logical circular hole of the big middle diameter of two ends diameter in its valve body of described brake off valve (7), a step in the logical circular hole of the major diameter of a logical circular hole transition position of size diameter is made as valve seat (7.3) therein; The section that is provided with it in the middle of the valve seat (7.3) in the logical circular hole of minor diameter is " ten " font, can lead and can allow braking liquid pass through, and its length is longer than the spool pilot bar (7.6) of the logical circular hole length of minor diameter; In the logical circular hole of adjacent this end major diameter of spool pilot bar (7.6), be provided with the check valve (7.8) that links to each other with spool pilot bar (7.6) with valve seat (7.3); The one side that check valve (7.8) is adjacent with valve seat (7.3) is provided with seal ring (7.4); Another side is provided with one-way sealing spring (7.9); Contact with check valve (7.8) other end of an end of one-way sealing spring (7.9), being provided with and having logical circular hole in the middle of it is that high pressure road (7.1) divides the cylinder screw shutoff (7.10) that (6.7) link to each other with hydraulic pressure; In the logical circular hole of the major diameter of one end size diameter hole transition position of described spool pilot bar (7.6) guiding, be provided with the logical circular hole of minor diameter and spool pilot bar (7.6) and the extraneous bowl seal film (7.5) that cuts off mutually; Contact with spool pilot bar (7.6) another side of one side of bowl seal film (7.5) is provided with, and has part to be exposed to brake off control button (7.7) outside the valve body; The wall portion of the pilot hole of described spool pilot bar (7.6) leads to time fluid passage (7.2) that links to each other with fluid reservoir (6.9) by second back liquid pipeline (14).
5. a kind of braking during standstill combined driving type device that is used for vehicle according to claim 2 is characterized in that: more described corresponding transfusion connecting tube comprises: the fluid pipeline (11) that fluid reservoir (6.9) links to each other with the master cylinder feed liquor check valve (6.61) of hydraulic main cylinder (6.6); The capstan (12) that the master cylinder fluid check valve (6.62) and the hydraulic pressure of hydraulic main cylinder (6.6) divides the branch cylinder feed liquor check valve (6.71) of cylinder (6.7) to be connected; Be connected in first back liquid pipeline (13) that fluid passage (8.2) is connected with fluid reservoir (6.9) that returns of limiting valve (8) in the capstan (12); Second back liquid pipeline (14) that pressure divides the branch cylinder tapping channel (6.72) of cylinder (6.7) to be connected with fluid reservoir (6.9).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510091898 CN1730324A (en) | 2005-08-14 | 2005-08-14 | Method for vehicle parking and braking and braking group drive system |
| CN 200610108253 CN1911715A (en) | 2005-08-14 | 2006-08-02 | Parking braking method of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510091898 CN1730324A (en) | 2005-08-14 | 2005-08-14 | Method for vehicle parking and braking and braking group drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1730324A true CN1730324A (en) | 2006-02-08 |
Family
ID=35962756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510091898 Pending CN1730324A (en) | 2005-08-14 | 2005-08-14 | Method for vehicle parking and braking and braking group drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1730324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356380A (en) * | 2019-06-06 | 2019-10-22 | 安徽江淮银联重型工程机械有限公司 | A kind of parking braking system with oil cylinder power-assisted |
-
2005
- 2005-08-14 CN CN 200510091898 patent/CN1730324A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356380A (en) * | 2019-06-06 | 2019-10-22 | 安徽江淮银联重型工程机械有限公司 | A kind of parking braking system with oil cylinder power-assisted |
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