CN103541935B - Hydraulic system and the vehicle that comprises this hydraulic system - Google Patents
Hydraulic system and the vehicle that comprises this hydraulic system Download PDFInfo
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- CN103541935B CN103541935B CN201310547176.4A CN201310547176A CN103541935B CN 103541935 B CN103541935 B CN 103541935B CN 201310547176 A CN201310547176 A CN 201310547176A CN 103541935 B CN103541935 B CN 103541935B
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Abstract
The vehicle that the invention provides a kind of hydraulic system and comprise this hydraulic system. This hydraulic system comprises: braking deactivation system (10), comprises brake (11) and brake off oil circuit (12); Steering (20), comprises hydraulic steering gear (21) and turns to operating cylinder (22); Between steering (20) and braking deactivation system (10), be connected with and be connected oil circuit (30), the first end that connects oil circuit (30) is connected on first hydraulic fluid port (211) or the second hydraulic fluid port (212) of hydraulic steering gear (21), and the second end that connects oil circuit (30) is connected to the oil-in of brake (11); Connect oil circuit (30) and releasing brake circuit (12) the two one of be selectively connected with brake (11). According to hydraulic system of the present invention, can solve needs to arrange separately manual pump in prior art and carries out the problem that cost is higher, utilization rate is lower that car brakeing releasing brings.
Description
Technical field
The present invention relates to hydraulic control field, in particular to a kind of hydraulic system and the vehicle that comprises this hydraulic system.
Background technology
In Vehicular system, generally comprise and control the brake off hydraulic system of brake brake off and control Vehicular turnSteering hydraulic system. In the time that the brake off hydraulic system of vehicle breaks down, will cause the vehicle cannot brake off, can notEnough towing smoothly to repair location, is not easy to the maintenance of vehicle.
In the prior art, in order to address the above problem, provide specially a kind of manual pump brake off and realize headstock proofread and correctHydraulic system, this hydraulic system is coordinated hydraulic system is controlled by manual pump and triple valve, at needs, headstock is carried out to schoolTiming, by manual pump separatory to steering, in the time of the manual brake off of needs, by manual pump separatory to brake off hydraulic pressureSystem, makes brake brake off, thereby can tow smoothly while ensureing vehicle trouble.
But it is hydraulic system configuration manual pump and related valves group separately that said structure needs, and has therefore increased the cost of system, in addition,Under vehicle normal operating conditions, manual pump system utilization rate is very low, therefore causes larger waste.
Summary of the invention
The vehicle that the present invention aims to provide a kind of hydraulic system and comprises this hydraulic system, needs to establish separately to solve in prior artPut manual pump and carry out the problem that cost is higher, utilization rate is lower that car brakeing releasing brings.
To achieve these goals, according to an aspect of the present invention, provide a kind of hydraulic system, having comprised: system has been removed in brakingSystem, comprises brake and is connected to the brake off oil circuit of brake; Steering, comprises hydraulic steering gear and and hydraulic rotationDrive the operating cylinder that turns to connecting to device; Steering and braking are connected with between deactivation system and are connected oil circuit, connect the of oil circuitOne end is connected on first hydraulic fluid port or the second hydraulic fluid port of hydraulic steering gear, and the second end that connects oil circuit is connected to the oil-in of brake;Connect oil circuit and remove brake circuit the two one of be selectively connected with brake.
Further, connect the first control valve that is provided with control connection oil circuit break-make on oil circuit.
Further, be provided with the first reversal valve on brake off oil circuit, the first reversal valve control brake is communicated to fuel tank or companyPass to the first hydraulic pump of brake off oil circuit, between the first reversal valve and brake, be connected with and control brake and brake off oilThe second control valve of road break-make.
Further, the first reversal valve is two-position three-way valve.
Further, brake, brake off oil circuit and be connected oil circuit and be all connected to the second reversal valve, the second reversal valve control systemMoving device is selectively communicated with brake off oil circuit, be communicated with and connect oil circuit or with brake off oil circuit be connected oil circuit and all disconnect.
Further, the second reversal valve is three position three-way change valve, and brake is connected to the first connector of three position three-way change valve,Brake off oil circuit is connected to the second connector of three position three-way change valve, connects oil circuit and is connected to the 3rd of three position three-way change valveConnector, when three position three-way change valve is positioned at the first station, brake, brake off oil circuit and be connected oil circuit and be not communicated with mutually; ThreePosition three-way diverter valve is while being positioned at the second station, brake be connected oil circuit connection; When three position three-way change valve is positioned at the 3rd station,Brake is communicated with brake off oil circuit.
Further, in steering, be also connected with tournament oil path, tournament oil path first relatively end be connected to hydraulic steering gearThe first hydraulic fluid port, second of tournament oil path is relatively held the second hydraulic fluid port that is connected to hydraulic steering gear, connects oil circuit and is connected to tournament oil pathOutput.
Further, turn between operating cylinder and brake and be also connected with the 3rd control valve, the 3rd control valve control turns to operating cylinderDisconnect or be communicated with hydraulic steering gear.
Further, turn to operating cylinder to comprise the first steering cylinder and the second steering cylinder, the first hydraulic fluid port of hydraulic steering gear connects respectivelyTo the rodless cavity of the first steering cylinder and the rod chamber of the second steering cylinder, the second hydraulic fluid port of hydraulic steering gear is connected to respectively first and turns toThe rodless cavity of the rod chamber of cylinder and the second steering cylinder.
According to a further aspect in the invention, provide a kind of vehicle, comprised hydraulic system, this hydraulic system is above-mentioned hydraulic pressure systemSystem.
Apply technical scheme of the present invention, hydraulic system comprises: braking deactivation system, comprises brake and be connected to described systemThe brake off oil circuit of moving device; Steering, comprises hydraulic steering gear and drives with described hydraulic steering gear the operation that turns to being connectedCylinder; Between described steering and described braking deactivation system, be connected with and be connected oil circuit, the first end of described connection oil circuit is connected toOn first hydraulic fluid port or the second hydraulic fluid port of described hydraulic steering gear, the second end of described connection oil circuit is connected to the oil-feed of described brakeMouthful; Described connection oil circuit and described brake off oil circuit the two one of be selectively connected with described brake. When this hydraulic pressure systemWhen system work, once braking deactivation system breaks down, while causing vehicle etc. cannot continue travel and tow, now only need to controlConnect oil circuit and be communicated with brake, just can control brake by the hydraulic oil in steering, brake is removedBraking, thus can facilitate vehicle to move to smoothly objective, simple in structure, it is convenient to realize, and cost is lower, and withoutIncrease extra hydraulic system, use the hydraulic system of vehicle self, improved the reasonable utilization rate of vehicle resources.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, illustrative examples of the present invention andIts explanation is used for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 shows according to the structural representation of the hydraulic system of the first embodiment of the present invention; And
Fig. 2 shows the structural representation of hydraulic system according to a second embodiment of the present invention.
Reference numeral: 10, braking deactivation system; 20, steering; 30, connect oil circuit; 11, brake; 12, remove systemMoving oil circuit; 121, the first hydraulic pump; 122, the first reversal valve; 13, the second control valve; 14, the second reversal valve; 15,Two overflow valves; 21, hydraulic steering gear; 211, the first hydraulic fluid port; 212, the second hydraulic fluid port; 213, oil-in; 214, oil return opening;22, turn to operating cylinder; 221, the first steering cylinder; 222, the second steering cylinder; 23, the second hydraulic pump; 24, tournament oil path;25, the 3rd control valve; 31, the first control valve; 32, the first overflow valve.
Detailed description of the invention
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments. It should be noted that, in the situation that not conflicting,Feature in embodiment and embodiment in the application can combine mutually.
Hydraulic steering gear: hydraulic steering gear turns the secondary full liquid of a kind of cycloid rotary valve forming of stator by follow-up rotary valve and a width cycloidPress steering gear. The hydro-steering system that it and oil feed pump, overflow valve (or flow divider), steering cylinder and other coupling formSystem, is widely used in agricultural machinery, ship industry machinery, graden machine, road maintenance machinery, forestry machinery, engineering machinery and ore depositMountain machinery waits on low-speed heave-load vehicle. Human pilot can be realized larger steering force control with less steering force by it, andAnd performance safety, reliable, handles light, flexible.
As depicted in figs. 1 and 2, according to embodiments of the invention, hydraulic system comprises braking deactivation system 10, steering 20Be connected oil circuit 30. Braking deactivation system 10 comprises brake 11 and is connected to the brake off oil circuit 12 of brake 11, usesWhen at Vehicle Driving Cycle, make vehicle keep braking disarm state, thereby make normal vehicle operation. Steering 20 comprises fluid-link steeringDevice 21 with hydraulic steering gear 21 drive is connected turn to operating cylinder 22, can turn to operating cylinder by hydraulic steering gear 21 controls22 stretch to control Vehicular turn. Connect oil circuit 30 and be connected between steering 20 and braking deactivation system 10, connect oil circuit30 first end is connected on first hydraulic fluid port 211 or the second hydraulic fluid port 212 of hydraulic steering gear 21, connects the second end of oil circuit 30Be connected to the oil-in of brake 11; Connect oil circuit 30 and remove brake circuit 12 the two one of selectively with brake 11Be connected.
In the time of this hydraulic work system, once braking deactivation system break down, while causing vehicle etc. cannot continue travel and tow,Now only need control connection oil circuit 30 to be communicated with brake 11, just can be by the hydraulic oil in steering 20 to brake 11Control, make brake 11 brake offs, thereby can facilitate vehicle to move to smoothly objective, this hydraulic system is only logicalCross and increase a connection oil circuit 30, thereby the hydraulic oil in steering 20 can be controlled brake 11, not only knotStructure is simple, and it is convenient to realize, and cost is lower, and without increasing extra hydraulic system, uses the hydraulic system of vehicle selfCan, strengthen the allotment ability of vehicle own resource.
Turn to operating cylinder 22 to comprise the first steering cylinder 221 and the second steering cylinder 222,211 points of the first hydraulic fluid ports of hydraulic steering gear 21Be not connected to the rodless cavity of the first steering cylinder 221 and the rod chamber of the second steering cylinder 222, the second hydraulic fluid port 212 of hydraulic steering gear 21Be connected to respectively the rod chamber of the first steering cylinder 221 and the rodless cavity of the second steering cylinder 222. On hydraulic steering gear 21, be also provided withOil-in 213 and oil return opening 214, oil-in 213 is connected to the second hydraulic pump 23, and oil return opening 214 is connected to fuel tank.
When the second hydraulic pump 23 is to first 211 output hydraulic pressures whens oil of hydraulic fluid port of hydraulic steering gear 21, hydraulic oil is from the first hydraulic fluid port 211Place enters respectively the rodless cavity of the first steering cylinder 221 and the rod chamber of the second steering cylinder 222, the piston rod of the first steering cylinder 221Stretch out, the piston rod of the second steering cylinder 222 is retracted, and vehicle completes the action of turning right. When the second hydraulic pump 23 is to hydraulic steering gear 21Second 212 output hydraulic pressures whens oil of hydraulic fluid port, hydraulic oil enters respectively the rod chamber of the first steering cylinder 221 from the second hydraulic fluid port 212With the rodless cavity of the second steering cylinder 222, the piston rod of the first steering cylinder 221 is retracted, and the piston rod of the second steering cylinder 222 stretches out,Vehicle completes action.
In conjunction with shown in Figure 1, according to the first embodiment of the present invention, connect on oil circuit 30 and be provided with control connection oil circuit 30The first control valve 31 of break-make, this first control valve 31 is manual 2/2-way valve herein. On brake off oil circuit 12, be provided withThe first reversal valve 122, the first reversal valves 122 are controlled brake 11 and are communicated to fuel tank or are communicated on brake off oil circuit 12Between one hydraulic pump 121, the first reversal valves 122 and brake 11, be connected with control brake 11 logical with brake off oil circuit 12The second disconnected control valve 13.
In the present embodiment, the first reversal valve 122 is two-position three-way valve, and this two-position three-way valve can be magnetic valve, can be alsoHand-operated valve or pilot operated valve device. The second control valve 13 can be manual 2/2-way valve or electromagnetism 2/2-way valve. The first reversal valve122 is two-position three-way valve, and this two-position three-way valve can make brake 11 be communicated to fuel tank or be communicated on brake off oil circuit 12The first hydraulic pump 121.
Because most of hydraulic steering gears 21 itself have manual steering function, in the time of hydraulic system fault, can play manual steeringFunction, thereby the present invention can utilize the manual steering pumping function of hydraulic steering gear 21, removes the braking action of EPB,Vehicle can be towed smoothly in the time breaking down, and do not affect and turn to.
The course of work of the hydraulic system of the present embodiment is as follows: in vehicle normal operative condition, the second control valve 13 is in connected stateState, the first control valve 31, in closed condition, is controlled opening of brake 11 by the first hydraulic pump 121 and the first reversal valve 122With close, in the time of the first reversal valve 122 dead electricity, brake 11 is connected with fuel tank, with after ensureing tail-off or equipment faultTime vehicle in on-position, ensure the safety of vehicle.
In the time of vehicle trouble, the braking that the first hydraulic pump 121 cannot brake off device 11, brake 11 cuts out, and vehicle cannot dragOK. Now close the second control valve 13, open the first control valve 31, the steering wheel in rotational hydraulic steering gear 21 is (in this exampleTurn right to), due to the required pressure that steering drag is braked far above brake off device 11, turn to behavior can not occur, now liquidForce feed enters brake 11, and opens brake 11, the braking action of brake off device 11. Then close the first control valve 31,Make brake 11 stay open state, remove the braking action to vehicle. Now steering 20 with remove being connected of parking brakingOil circuit 30 cuts off by the first control valve 31, and both are independent of each other, and normally manual steering realizes and towing smoothly. TowAfter end, open the second control valve 13, brake 11 cuts out, and vehicle enters normal mode of operation.
In figure, the pressore setting of the first overflow valve 32 need be used pressure higher than the work of the first hydraulic pump 121, during lower than parking, brakesThe limiting pressure of device 11, thus ensure that protection brake 11 can be by the pressure damage of hydraulic steering gear 21, do not affect normal yetSystem pressure when work.
As shown in Figure 2, according to a second embodiment of the present invention, brake 11, brake off oil circuit 12 and to be connected oil circuit 30 equalBe connected to the second reversal valve 14, the second reversal valves 14 control brake 11 be selectively communicated with brake off oil circuit 12, be communicated with connectConnect oil circuit 30 or with brake off oil circuit 12 be connected oil circuit 30 and all disconnect.
In the present embodiment, the second reversal valve 14 is three position three-way change valve, and brake 11 is connected to of three position three-way change valveOne connector, brake off oil circuit 12 is connected to the second connector of three position three-way change valve, connects oil circuit 30 and is connected to threeThe 3rd connector of three-way diverter valve, when three position three-way change valve is positioned at the first station, brake 11, brake off oil circuit 12 andConnecting oil circuit 30 is not communicated with mutually; When three position three-way change valve is positioned at the second station, brake 11 be connected oil circuit 30 and be communicated with; ThreeWhen position three-way diverter valve is positioned at the 3rd station, brake 11 is communicated with brake off oil circuit 12.
In steering 20, be also connected with tournament oil path 24, tournament oil path 24 first relatively end be connected to hydraulic steering gear 21The first hydraulic fluid port 211, second of tournament oil path 24 is relatively held the second hydraulic fluid port 212 that is connected to hydraulic steering gear 21, connects oil circuit 30Be connected to the output of tournament oil path 24. Tournament oil path 24 in the present embodiment also can be applied in the first embodiment, its workWith all identical with connected mode.
Turn to and between operating cylinder 22 and brake 11, be also connected with the 3rd control valve 25, the three control valves 25 and control and turn to operating cylinder22 disconnect or are communicated with hydraulic steering gear 21. The 3rd control valve 25 in the present embodiment also can be applied in the first embodiment,Its effect is all identical with connected mode.
Also be connected with the second overflow valve 15 at the oil-in of brake 11, this second overflow valve 15 can be controlled and enter brake 11The maximum pressure of hydraulic oil, thereby other assemblies relevant to the hydraulic fluid pressure of the brake off of this brake 11 are formed and are protectedProtect, prevent that hydraulic fluid pressure is excessive and these parts are caused to damage.
Owing to having increased tournament oil path 24 in the present embodiment, make in the time that brake off operates, no matter hydraulic steering gear 21 is to left-handRight rotation all can brake off, therefore makes in this programme the braking that carrys out brake off device 11 by steering 20 become moreSimple and convenient, easily with operation. In addition, this programme increases by the 3rd control valve 25, and it is special to prevent at some type or someIn situation, because steering pressure is too low, and cause removing the problem of parking braking. In the time there is this problem, only need to closeClose the 3rd control valve 25, operation hydraulic steering gear 21, turn to operating cylinder 22 because hydraulic oil cannot enter, therefore can increase intoEnter to connect the hydraulic fluid pressure in oil circuit 30, thereby realize the object of removing parking braking. According to actual conditions, cancel or increaseSome valve group in this example, for example, cancel the 3rd control valve 25 and tournament oil path 24 in Fig. 2, all do not deviate from the application's protectionScope.
The course of work of the hydraulic system of the present embodiment is as follows: in vehicle normal operative condition, the second reversal valve 14 is in the 3rd workPosition (be right working position in figure), is connected disconnection, brake off oil circuit 12 and brake between connection oil circuit 30 and brake 11Between 11, be communicated with, control opening and closing of brake 11 by the first hydraulic pump 121 and the first reversal valve 122, in the first commutationWhen valve 122 dead electricity, brake 11 is connected with fuel tank, with vehicle after ensureing tail-off or when equipment fault in on-position,Ensure the safety of vehicle, the first reversal valve 122 when electric brake 11 be communicated with the first hydraulic pump 121, by the first hydraulic pumpThe 121 hydraulic oil control end input hydraulic pressure oil to brake 11, make brake 11 stay open state, ensure normal vehicle operation.
In the time of vehicle trouble, the braking that the first hydraulic pump 121 cannot brake off device 11, brake 11 cuts out, and vehicle cannot dragOK. Now regulate the second reversal valve 14 to second stations, make to connect between oil circuit 30 and brake 11 and be communicated with, brake off oilBetween road 12 and brake 11, be connected disconnection, now regulate the 3rd control valve 25, be located at left station, turn to operating cylinder22 and hydraulic steering gear 21 between be connected disconnection, the then steering wheel in rotational hydraulic steering gear 21, now hydraulic oil is by connectingConnect oil circuit 30 and enter brake 11, and open brake 11, the braking action of brake off device 11. Then regulate the second commutationValve 14 to first stations, connect between oil circuit 30, brake 11 and brake off oil circuit 12 and all disconnect, and brake 11 is protectedHold open mode, remove the braking action to vehicle. Now steering 20 is passed through with the oil circuit 30 that is connected of removing parking brakingThe second reversal valve 14 cuts off, and both are independent of each other. Can regulate afterwards the 3rd control valve 25 to right working position, make fluid-link steeringDevice 21 is communicated with turning between operating cylinder 22, thereby can control Vehicular turn, realizes and towing smoothly.
Each valve in the present embodiment all can be realized with the valve that can realize identical function.
According to embodiments of the invention, vehicle comprises hydraulic system, and this hydraulic system is above-mentioned hydraulic system.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1, compared with connecing the moving parking braking scheme of releasing with existing manual pump, need not be equipped with manual pump, also not need to increase other element,Simple in structure, cost is low.
2, compare without the vehicle of manually removing parking braking, native system can be removed parking braking smoothly does not affect manual steering simultaneously,And only need in original hydraulic system, increase several switch valves and overflow valve, easy to use, take full advantage of the existing parts of machine.
3, native system is very easily realized, and it is convenient to promote.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, etc.With replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a hydraulic system, is characterized in that, comprising:
Braking deactivation system (10), comprises brake (11) and is connected to the brake off oil of described brake (11)Road (12);
Steering (20), comprises hydraulic steering gear (21) and drives with described hydraulic steering gear (21) turning to of being connectedOperating cylinder (22);
Between described steering (20) and described braking deactivation system (10), be connected with and be connected oil circuit (30), described companyThe first end that connects oil circuit (30) is connected to the first hydraulic fluid port (211) or second hydraulic fluid port (212) of described hydraulic steering gear (21)Upper, the second end of described connection oil circuit (30) is connected to the oil-in of described brake (11);
Described connection oil circuit (30) and described brake off oil circuit (12) the two one of selectively with described brake (11)Be connected;
Described brake (11), described brake off oil circuit (12) and described connection oil circuit (30) are all connected to second and changeTo valve (14), described the second reversal valve (14) is controlled described brake (11) and is selectively communicated with described brake off oilRoad (12), be communicated with described connection oil circuit (30) or with described brake off oil circuit (12) and the described oil circuit (30) that is connectedAll disconnect;
Described the second reversal valve (14) is three position three-way change valve, and described brake (11) is connected to described 3-position-3-wayThe first connector of reversal valve, described brake off oil circuit (12) is connected to second of described three position three-way change valve and connectsMouthful, described connection oil circuit (30) is connected to the 3rd connector of described three position three-way change valve;
When described three position three-way change valve is positioned at the first station, described brake (11), described brake off oil circuit (12)Be not communicated with mutually with described connection oil circuit (30);
When described three position three-way change valve is positioned at the second station, described brake (11) connects with the described oil circuit (30) that is connectedLogical;
When described three position three-way change valve is positioned at the 3rd station, described brake (11) and described brake off oil circuit (12)Be communicated with.
2. hydraulic system according to claim 1, is characterized in that, on described connection oil circuit (30), is provided with described in controlConnect first control valve (31) of oil circuit (30) break-make.
3. hydraulic system according to claim 2, is characterized in that, on described brake off oil circuit (12), is provided with firstReversal valve (122), described the first reversal valve (122) control described brake (11) be communicated to fuel tank or be communicated to described inFirst hydraulic pump (121) of brake off oil circuit (12), described the first reversal valve (122) and described brake (11)Between be connected with and control described brake (11) and second control valve (13) of described brake off oil circuit (12) break-make.
4. hydraulic system according to claim 3, is characterized in that, described the first reversal valve (122) is two-position three-way valve.
5. according to the hydraulic system described in any one in claim 1 to 4, it is characterized in that, described steering (20) is also upperBe connected with tournament oil path (24), first of described tournament oil path (24) is relatively held and is connected to described hydraulic steering gear (21)The first hydraulic fluid port (211), described tournament oil path (24) second relatively end be connected to the of described hydraulic steering gear (21)Two hydraulic fluid ports (212), described connection oil circuit (30) is connected to the output of described tournament oil path (24).
6. according to the hydraulic system described in any one in claim 1 to 4, it is characterized in that, described in turn to operating cylinder (22) withBetween described brake (11), be also connected with the 3rd control valve (25), described the 3rd control valve (25) control described in turn toOperating cylinder (22) disconnects or is communicated with described hydraulic steering gear (21).
7. hydraulic system according to claim 1, is characterized in that, described in turn to operating cylinder (22) to comprise the first steering cylinder(221) and the second steering cylinder (222), described in first hydraulic fluid port (211) of described hydraulic steering gear (21) is connected to respectivelyThe rod chamber of the rodless cavity of the first steering cylinder (221) and described the second steering cylinder (222), described hydraulic steering gear (21)The second hydraulic fluid port (212) be connected to respectively rod chamber and described second steering cylinder (222) of described the first steering cylinder (221)Rodless cavity.
8. a vehicle, comprises hydraulic system, it is characterized in that, described hydraulic system is in claim 1 to 7 described in any oneHydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547176.4A CN103541935B (en) | 2013-11-06 | 2013-11-06 | Hydraulic system and the vehicle that comprises this hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547176.4A CN103541935B (en) | 2013-11-06 | 2013-11-06 | Hydraulic system and the vehicle that comprises this hydraulic system |
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| CN103541935A CN103541935A (en) | 2014-01-29 |
| CN103541935B true CN103541935B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310547176.4A Active CN103541935B (en) | 2013-11-06 | 2013-11-06 | Hydraulic system and the vehicle that comprises this hydraulic system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3835153B1 (en) * | 2019-12-13 | 2022-12-07 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Valve arrangement |
| CN111186479B (en) * | 2020-01-15 | 2021-07-20 | 江苏大学 | Fault-tolerant system and method for wire-controlled steering |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3129825B2 (en) * | 1992-03-03 | 2001-01-31 | 日立建機株式会社 | Hydraulic circuit of construction machinery |
| US5826487A (en) * | 1997-02-20 | 1998-10-27 | Caterpillar Inc. | Pressure control for a pair of parallel hydraulic circuits |
| CN102079332B (en) * | 2010-12-16 | 2013-03-13 | 杭叉集团股份有限公司 | Steering and braking small-flow shared pump hydraulic system |
| CN102094855B (en) * | 2010-12-28 | 2013-07-24 | 徐州重型机械有限公司 | Wheel type engineering machinery hydraulic control system and wheeled crane applying same |
| CN102642558A (en) * | 2012-04-05 | 2012-08-22 | 昆山晋桦豹胶轮车制造有限公司 | Manual pump oil head correction and brake-off control system |
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