CN211494217U - Anti-drop high-pressure steering auxiliary device - Google Patents
Anti-drop high-pressure steering auxiliary device Download PDFInfo
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- CN211494217U CN211494217U CN201922200966.0U CN201922200966U CN211494217U CN 211494217 U CN211494217 U CN 211494217U CN 201922200966 U CN201922200966 U CN 201922200966U CN 211494217 U CN211494217 U CN 211494217U
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- steering
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- pressure
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- pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
The utility model relates to an anti-drop high-pressure steering auxiliary device, which comprises a rotary oil can, an electric steering pump, a steering gear, a steering wheel, an energy accumulator and a DCU controller; the energy accumulator is connected to a high-pressure oil pipe between the electric steering pump and the steering gear, and an air outlet of the energy accumulator is matched with the high-pressure oil pipe through a three-way joint and is respectively connected with the electric steering pump and the steering gear; a one-way valve is connected in series on a high-pressure oil pipe between an oil outlet of the electric steering pump and the three-way joint; a high-pressure pipeline between the air outlet of the energy accumulator and the three-way joint is connected with an electromagnetic valve; the electromagnetic valve is connected to a main CAN line of the DCU controller through an electromagnetic valve line; an electromagnetic regulating valve is connected on an oil return pipe between an oil return port of the steering gear and an oil return port of the rotating oil can; the electromagnetic regulating valve is connected to a main CAN line of the DCU controller through an electromagnetic regulating valve line. The utility model discloses safe in utilization, reliable can guarantee that the electric steering pump is after the electricity falls, and the vehicle can also normally park.
Description
Technical Field
The utility model relates to a high pressure rotates rotary pump technical field, concretely relates to prevent falling high pressure and turn to auxiliary device.
Background
With the development of the new energy industry greatly promoted by the country and the implementation of the 'blue sky plan' for environmental protection, the yield of new energy automobiles is gradually improved, and the design quality problems of the new energy automobiles gradually emerge from the water surface.
The connection mode of more electric vehicle steering systems is that a power-driven oil pot → a power-driven pump → a steering booster → a power-driven oil pot, when a vehicle runs at present, high voltage power is cut off, high voltage components (particularly the power-driven pump) stop working when the vehicle runs at high speed, the phenomena of direction failure and direction return can occur, and the life safety of passengers in the whole vehicle is seriously threatened. When the rotary pump suddenly loses high voltage electricity during running and stops working, the phenomenon that the steering gear lacks oil pressure and the direction returns to the right direction during running is caused, the steering wheel is driven to rotate, the phenomenon of steering wheel beating is caused, steering is in a no-power-assisted state at the moment, the steering of a vehicle with a heavy front axle load is difficult at the moment, and a driver cannot control the running direction of the vehicle in an emergency.
For this situation, the following measures may be taken:
firstly, the power-driven rotary pump uses a dual-power-driven rotary pump; the low voltage can continue to operate after the high voltage is powered down; however, the price of the state rotating pump of the scheme is higher and is twice of the price of other rotating pumps, and a set of additional controller is added, so that the cost is too high;
secondly, a low-pressure rotating pump is used; after the high voltage of the whole vehicle is dropped, the storage battery can still provide the electric quantity for the rotating pump, so that the normal work can be ensured after the high voltage is dropped; however, the low-voltage motor in the scheme is large, the cost of the wire harness is high, and the low-voltage motor of a vehicle type with the length of more than 8 meters is not used at present;
thirdly, an energy storage device is added in the power steering system; an energy storage device is additionally arranged between the rotary pump and the steering gear to ensure that the rotary pump is supplied with short energy to the steering booster after power failure, so that the vehicle can be normally stopped.
The power steering system is feasible to increase the energy storage device, and has more practical significance especially for the vehicle type with the length of more than 8 meters. Therefore, how to add an energy storage device to a power steering system to realize that when the electric rotary pump stops working under high pressure, such as during high-speed running of a vehicle, a short amount of energy is supplied to a steering gear to ensure that the steering gear can be normally stopped is a technical problem to be solved.
Disclosure of Invention
The utility model discloses a solve the problem that exists among the above-mentioned prior art, and provided one kind and can guarantee after the electricity down that electric power steering pump can short-lived energy supply for the direction machine with the high pressure steering auxiliary device that prevents falling that can normally park when out of work.
The utility model discloses a realize through following technical scheme:
the anti-drop high-pressure steering auxiliary device comprises a rotating oil can, an electric steering pump, a steering gear, a steering transmission device and a steering wheel; an oil inlet of the electric steering pump is connected to an oil outlet of the rotating oil can through a rotating pump oil inlet pipe, and an oil outlet of the electric steering pump is connected to the steering gear through a high-pressure oil pipe; an oil return port of the steering gear is connected to an oil return port of the rotating oil can through an oil return pipe; the steering transmission device is arranged at the upper end of the steering gear, and the steering wheel is arranged at the upper end of the steering transmission device; the anti-drop high-pressure steering auxiliary device further comprises an energy storage device and a DCU controller; the energy accumulator is connected to a high-pressure oil pipe between the electric steering pump and the steering gear, and an air outlet of the energy accumulator is matched with the high-pressure oil pipe through a three-way joint and is respectively connected with the electric steering pump and the steering gear; a one-way valve is also connected in series on a high-pressure oil pipe between the oil outlet of the electric steering pump and the three-way joint; a high-pressure pipeline between the air outlet of the energy accumulator and the three-way joint is also connected with an electromagnetic valve; the electromagnetic valve is connected to a main CAN line of the DCU controller through an electromagnetic valve line; an electromagnetic regulating valve is connected on an oil return pipe between an oil return port of the steering gear and an oil return port of the rotating oil can; and the electromagnetic regulating valve is connected to a main CAN line of the DCU controller through an electromagnetic regulating valve line.
The anti-drop high-pressure steering assist device, wherein: and a pressure sensor is further installed at the air outlet of the energy accumulator and is connected to a main CAN line of the DCU controller through a pressure sensor line.
The anti-drop high-pressure steering assist device, wherein: and a steering angle sensor is further installed at the connecting part of the steering transmission device and the steering gear, and the steering angle sensor is connected to a main CAN line of the DCU controller through an angle sensor line.
Has the advantages that:
the utility model has simple and reasonable structure design, the energy storage device and the DCU controller are additionally arranged between the steering pump and the steering machine, the gas outlet of the energy storage device is matched with the high-pressure oil pipe through the three-way joint and is respectively connected with the electric steering pump and the steering machine, the one-way valve is connected on the high-pressure oil pipe between the oil outlet of the electric steering pump and the three-way joint in series, the high-pressure pipeline between the gas outlet of the energy storage device and the three-way joint is also connected with the electromagnetic valve, the electromagnetic regulating valve is connected on the oil return pipe between the oil return port of the steering machine and the oil return port of the steering pot, the DCU controller controls the opening and closing of the electromagnetic valve and the electromagnetic regulating valve to achieve the flow of the control valve combination and the DCU control hydraulic oil, thereby realizing the operation of the anti-falling high-pressure steering auxiliary device under each working state of the vehicle, and ensuring the electric steering pump not work after, the steering gear is supplied with transient energy, so that the vehicle can be normally stopped, the problems that the electric rotary pump is dropped at high pressure to stop working when the vehicle runs at high speed in the prior art, the direction is out of order and the direction returns to the right are effectively solved, potential safety hazards possibly occurring in the running process of the vehicle are eliminated, and the safety in the running process of the vehicle is effectively guaranteed.
The utility model discloses prevent falling high pressure and turn to auxiliary device not only can be applied to the vehicle, still can be applied to all products of using the high pressure to rotate the rotary pump.
Drawings
Fig. 1 is the structure schematic diagram of the anti-dropping high-pressure steering auxiliary device of the utility model.
Detailed Description
As shown in fig. 1, the utility model discloses prevent falling high pressure and turn to auxiliary device, including rotating oilcan 1, electronic steering pump 2, accumulator 3, steering gear 4, turning to transmission 5, steering wheel 6, DCU controller 7, electromagnetic control valve 8 and steering angle sensor 9.
The rotating oil pot 1 is provided with an oil inlet and an oil return port.
An oil inlet of the electric steering pump 2 is connected to an oil outlet of the rotating oil pot 1 through an oil inlet pipe of the rotating oil pot, an oil outlet of the electric steering pump 2 is connected with a check valve 21 in series through a high-pressure oil pipe, and the check valve 21 is connected to the steering gear box 4 through the high-pressure oil pipe.
The energy accumulator 3 is connected to a high-pressure oil pipe between the one-way valve 21 of the electric steering pump 2 and the steering gear 4, an oil outlet of the energy accumulator 3 is connected with a three-way joint 31 through the high-pressure oil pipe and is matched with the high-pressure oil pipe through the three-way joint 31 to be respectively connected with the one-way valve 21 of the electric steering pump 2 and the steering gear 4; wherein, a pressure sensor 32 is further installed at the oil outlet of the energy storage 3, and the pressure sensor 32 is connected to a main CAN line of the DCU controller 7 through a pressure sensor line; meanwhile, a high-pressure pipeline between the oil outlet of the energy accumulator 3 and the three-way joint 31 is also connected with an electromagnetic valve 33; the solenoid valve 33 is connected to the main CAN line of the DCU controller 7 by a solenoid valve line.
The oil return port of the steering gear 4 is connected to the oil return port of the rotating oil can 1 through an oil return pipe; wherein, an electromagnetic regulating valve 8 is connected on an oil return pipe between an oil return port of the steering gear 4 and an oil return port of the rotating oil can 1; the solenoid valve 8 is connected to a main CAN line of the DCU controller 7 through a solenoid valve line.
The steering transmission device 5 is arranged at the upper end of the steering gear 4, a steering angle sensor 9 is further arranged at the connecting part of the steering transmission device 5 and the steering gear 4, and the steering angle sensor 9 is connected to a main CAN line of the DCU controller 7 through an angle sensor line.
The steering wheel 6 is mounted on the upper end of the steering gear 5.
The following condition of the vehicle under each working state is combined, right the utility model discloses prevent falling high pressure and turn to auxiliary device's working process and further explain:
(1) normal driving state of vehicle
Move the oil of changeing in the oilcan 1 and advance oil pipe flow direction electric steering pump 2 by moving the pump, electric steering pump 2 promotes the back with hydraulic oil pressure by high pressure fuel pipe flow direction check valve 21, arrives three way connection 31 again (solenoid valve 33 is in the off-state this moment, the utility model discloses prevent falling high pressure and turn to auxiliary device and not participating in work), to traversing mechanism 4 at last, provide high-pressure helping hand oil for traversing mechanism 4, reach the effect of helping hand, traversing mechanism 4's oil flows to move in the oilcan 1 through electromagnetic control valve 8 (being in the on-state).
(2) State of stored energy
The utility model discloses when the vehicle normal operating the utility model discloses prevent falling high pressure and turn to auxiliary device and do not participate in work, only pressure sensor 32 monitors 3 pressures on the energy storage and be less than when requiring the value, and solenoid valve 33 is opened, and solenoid valve 8 closes simultaneously, and for 3 storage pressure on the energy storage, when pressure reaches the requirement value, solenoid valve 33 closes, and solenoid valve 8 opens, resumes normal operating condition.
(3) System operating state
When the high pressure of the vehicle is in fault and the high pressure is interrupted, the DCU controller 7 transmits a signal to the electromagnetic valve 33, the electromagnetic valve 33 is opened, if the steering angle sensor 9 is in a 0-scale state (a direction straight-going state), the electromagnetic regulating valve 8 is closed, and the vehicle is in a deceleration state at the same time; when a vehicle turns, the steering wheel 6 is rotated, the steering wheel 6 drives the steering transmission device 5, the steering transmission device 5 rotates, the angle of the steering angle sensor 9 changes, the steering angle sensor 9 transmits a steering angle signal to the DCU controller 7, different angle changes correspond to different voltage signals, the DCU controller 7 feeds a corresponding result back to the electromagnetic regulating valve 8, the electromagnetic regulating valve 8 makes opening states of different degrees according to the change of the input result, and the steering system is guaranteed to normally work; the oil return amount is minimized to meet the requirement, and the effective working time of the system is prolonged.
If the steering angle sensor 9 is in a scaled state, the electromagnetic regulating valve 8 is opened to a corresponding opening degree according to a value fed back to the DCU controller 7 by the steering angle sensor 9.
The utility model has the advantages of simple and reasonable design, can solve among the prior art vehicle when driving, lose the helping hand that turns to, the problem of the dead and direction return phenomenon of direction appears, guarantees to move the rotary pump after the electricity falls, and still there is transient energy supply for turning to the booster, guarantees that the vehicle can normally park.
Use 8 meters electric bus as the example below, right the utility model discloses prevent falling the effect calculation of high pressure steering auxiliary device in practical application and make the explanation down:
the maximum required pressure of the steering gear 4 is 13Mpa, and the flow rate is 20L/min; when a vehicle is in a driving process and a vehicle abnormal condition that the whole vehicle needs to actively break B-level high-voltage electricity is generated, a steering system is kept in a power-assisted state or at least kept in a power-assisted steering state for 30s and then the B-level electricity is broken when the vehicle speed is more than 5 km/h, so that high-voltage oil for 30s can be provided after an electric steering pump 2 is powered off for meeting the requirement of stopping the whole vehicle, and in order to ensure that the vehicle can still run to the normal stop after a fault, the condition needs to ensure that a steering wheel 6 can rotate for 2 times at a limit position after power failure, and the steering force after two times of rotation is less than 350N; the volume of the steering gear 4, i.e., the number of turns, is equal to the amount of oil supplied by the energy storage device during operation, so that the volume of the energy storage device 3 needs to be greater than the amount of oil supplied by the energy storage device during operation.
The above embodiments are merely used to illustrate the present application, and the present application is not limited thereto, and the anti-dropping high pressure steering auxiliary device of the present invention can be applied to products using a high pressure rotary pump.
Claims (3)
1. An anti-drop high-pressure steering auxiliary device comprises a rotating oil can, an electric steering pump, a steering gear, a steering transmission device and a steering wheel; an oil inlet of the electric steering pump is connected to an oil outlet of the rotating oil can through a rotating pump oil inlet pipe, and an oil outlet of the electric steering pump is connected to the steering gear through a high-pressure oil pipe; an oil return port of the steering gear is connected to an oil return port of the rotating oil can through an oil return pipe; the steering transmission device is arranged at the upper end of the steering gear, and the steering wheel is arranged at the upper end of the steering transmission device; the method is characterized in that: the anti-drop high-pressure steering auxiliary device further comprises an energy storage device and a DCU controller;
the energy accumulator is connected to a high-pressure oil pipe between the electric steering pump and the steering gear, and an air outlet of the energy accumulator is matched with the high-pressure oil pipe through a three-way joint and is respectively connected with the electric steering pump and the steering gear; a one-way valve is also connected in series on a high-pressure oil pipe between the oil outlet of the electric steering pump and the three-way joint; a high-pressure pipeline between the air outlet of the energy accumulator and the three-way joint is also connected with an electromagnetic valve; the electromagnetic valve is connected to a main CAN line of the DCU controller through an electromagnetic valve line;
an electromagnetic regulating valve is connected on an oil return pipe between an oil return port of the steering gear and an oil return port of the rotating oil can; and the electromagnetic regulating valve is connected to a main CAN line of the DCU controller through an electromagnetic regulating valve line.
2. The drop-proof high-pressure steering assist device according to claim 1, wherein: and a pressure sensor is further installed at the air outlet of the energy accumulator and is connected to a main CAN line of the DCU controller through a pressure sensor line.
3. The drop-proof high-pressure steering assist device according to claim 1, wherein: and a steering angle sensor is further installed at the connecting part of the steering transmission device and the steering gear, and the steering angle sensor is connected to a main CAN line of the DCU controller through an angle sensor line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921840259 | 2019-10-30 | ||
| CN2019218402591 | 2019-10-30 |
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| CN211494217U true CN211494217U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922200966.0U Active CN211494217U (en) | 2019-10-30 | 2019-12-10 | Anti-drop high-pressure steering auxiliary device |
| CN201911259624.4A Pending CN111301519A (en) | 2019-10-30 | 2019-12-10 | Anti-drop high-pressure steering auxiliary device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911259624.4A Pending CN111301519A (en) | 2019-10-30 | 2019-12-10 | Anti-drop high-pressure steering auxiliary device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301519A (en) * | 2019-10-30 | 2020-06-19 | 东风特汽(十堰)客车有限公司 | Anti-drop high-pressure steering auxiliary device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11180332A (en) * | 1997-12-18 | 1999-07-06 | Kayaba Ind Co Ltd | Motor-driven, oil-hydraulic power steering device |
| CN202624354U (en) * | 2012-05-30 | 2012-12-26 | 潍柴动力股份有限公司 | Hydraulic power steering system of hybrid vehicle |
| CN203158069U (en) * | 2013-04-08 | 2013-08-28 | 郑州宇通客车股份有限公司 | New energy vehicle and hybrid driving electric-hydraulic power-assisted steering system thereof |
| CN103523080B (en) * | 2013-10-23 | 2015-09-09 | 东风商用车有限公司 | The double dynamical servo steering system of a kind of hybrid electric vehicle |
| CN203651883U (en) * | 2013-10-28 | 2014-06-18 | 龙工(上海)机械制造有限公司 | Wheel-type loader hydraulic system with emergency steering function |
| CN204605931U (en) * | 2015-03-04 | 2015-09-02 | 淮安信息职业技术学院 | A kind of emergent electrobus electric hydraulic power-assisted steering system |
| CN106541987A (en) * | 2015-09-17 | 2017-03-29 | 东风特汽（十堰）专用车有限公司 | A kind of electric hydraulic power-assisted steering system |
| CN206719318U (en) * | 2017-04-18 | 2017-12-08 | 清华大学 | A kind of electric hydraulic power-assisted steering system that there is power-off to keep assist function in short-term |
| CN107235074A (en) * | 2017-05-09 | 2017-10-10 | 深圳市沃特玛电池有限公司 | Electric motor coach steering boost system |
| CN107891910A (en) * | 2017-12-19 | 2018-04-10 | 石家庄旭特压缩机有限公司十堰分公司 | A kind of automobile-used steering boost system of electric |
| CN107985397B (en) * | 2017-12-27 | 2024-01-16 | 潍柴动力股份有限公司 | Emergency vehicle steering system, new energy automobile and steering method |
| CN211494217U (en) * | 2019-10-30 | 2020-09-15 | 东风特汽(十堰)客车有限公司 | Anti-drop high-pressure steering auxiliary device |
-
2019
- 2019-12-10 CN CN201922200966.0U patent/CN211494217U/en active Active
- 2019-12-10 CN CN201911259624.4A patent/CN111301519A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301519A (en) * | 2019-10-30 | 2020-06-19 | 东风特汽(十堰)客车有限公司 | Anti-drop high-pressure steering auxiliary device |
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| CN111301519A (en) | 2020-06-19 |
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Effective date of registration: 20230407 Address after: 442000 Shiyan city of Hubei province whitecaps Road No. 51 Patentee after: Dongfeng Special Automobile Co.,Ltd. Address before: No. 80, middle Bailang Road, Shiyan City, Hubei Province, 442013 Patentee before: DONGFENG SPECIAL VEHICLE (SHIYAN) BUS Co.,Ltd. |