CN111003060B - Braking and steering electro-hydraulic control system of sweeping equipment - Google Patents
Braking and steering electro-hydraulic control system of sweeping equipment Download PDFInfo
- Publication number
- CN111003060B CN111003060B CN201911405721.XA CN201911405721A CN111003060B CN 111003060 B CN111003060 B CN 111003060B CN 201911405721 A CN201911405721 A CN 201911405721A CN 111003060 B CN111003060 B CN 111003060B
- Authority
- CN
- China
- Prior art keywords
- steering
- port
- valve
- brake
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
- B60T13/168—Arrangements for pressure supply
-
- 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
- B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
-
- 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
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses a sweeping equipment braking and steering electro-hydraulic control system which comprises a hydraulic oil tank, a hydraulic pump, a flow distribution valve, a steering proportional valve, a steering oil cylinder, a steering gear, a steering reversing valve, a braking oil way pressure regulating valve, a braking pipeline unloading valve, a braking pipeline terminal, a pressure sensor and a control unit. The invention realizes the wire control of automatic driving (unmanned driving) steering, braking and parking of the articulated equipment; meanwhile, an operation control system for manual driving is reserved, and the manual driving and the wire control two systems do not conflict with each other and have an uncoupled effect; one set of hydraulic braking system is reduced, namely the hydraulic braking system is combined with the hydraulic system, and the equipment cost is reduced.
Description
Technical Field
The invention relates to the field of environmental sanitation equipment, in particular to a braking and steering electro-hydraulic control system of sweeping equipment.
Background
The articulated sweeping cleaning vehicle is one of the typical environmental sanitation devices on the market, and the typical technical state is a steering mode of adopting a hydraulic steering device and a hydraulic oil cylinder for pushing, and a traditional hydraulic braking system is adopted. In addition, the cleaning vehicle has the characteristic of low operation (running) speed. In addition, the important reason that the existing motor vehicle brake oil cannot adopt the hydraulic oil is to prevent the failure caused by overhigh temperature of the hydraulic oil, easy emulsification and the like.
In the process of wire-controlled modification of unmanned driving (automatic driving), steering is generally realized by adopting a mode that external forces such as a motor simulate the rotation of a steering wheel, and braking is generally realized by adopting an electric push rod to simulate a pedal stroke to push a brake pump. The defect is that the control precision of steering and braking is poor when the automatic driving control is carried out.
Disclosure of Invention
The invention aims to provide a sweeping equipment braking and steering electro-hydraulic control system.
In order to achieve the purpose, the invention adopts the following technical scheme:
cleaning equipment braking turns to electric hydraulic control system, its characterized in that: the hydraulic control system comprises a hydraulic oil tank, a hydraulic pump, a flow distribution valve, a steering proportional valve, a steering oil cylinder, a steering gear, a steering reversing valve, a brake oil way pressure regulating valve, a brake pipeline unloading valve, a brake pipeline terminal, a pressure sensor and a control unit.
The inlet of the hydraulic pump is connected to the oil suction port of the hydraulic oil tank, the outlet of the hydraulic pump is connected to the first port of the flow distribution valve, the second port of the flow distribution valve is connected to one port of the steering proportional valve, the other port of the steering proportional valve is connected to the P port of the steering reversing valve, the A port of the steering reversing valve is connected to the rodless cavity of the steering oil cylinder, the rod cavity of the steering oil cylinder is connected to the B port of the steering reversing valve, and the T port of the steering reversing valve is connected to the oil return port of the hydraulic oil tank.
And a third port of the flow distribution valve is connected to one port of the brake reversing valve, and the other port of the brake reversing valve is connected to a brake pipeline terminal.
One port of the brake pipeline unloading valve is connected to the third port of the flow distribution valve, and the other port of the brake pipeline unloading valve is connected to an oil return port of the hydraulic oil tank.
And one port of the brake oil path pressure regulating valve is connected to the third port of the flow distribution valve, and the other port of the brake oil path pressure regulating valve is connected to an oil return port of the hydraulic oil tank.
The steering gear is provided with a manual input end, a first port of the steering gear is connected to the other port of the steering proportional valve, a second port of the steering gear is connected to an oil return port of the hydraulic oil tank, a third port of the steering gear is connected to a rodless cavity of the steering oil cylinder, and a fourth port of the steering gear is connected to a rod cavity of the steering oil cylinder.
The pressure sensor is arranged at the brake pedal and used for detecting a pedal pressure signal and transmitting the pedal pressure signal to the control unit.
The steering reversing valve, the steering proportional valve, the brake reversing valve, the brake pipeline unloading valve and the hydraulic pump are respectively and electrically connected to the control unit.
And a system pressure regulating valve is connected to pipelines of an outlet end of the hydraulic pump and an oil return port of the hydraulic oil tank.
And the manual input end of the steering gear is connected with a steering wheel or a steering column.
The inside of the hydraulic oil tank is provided with a liquid level meter.
And an air inlet of the hydraulic oil tank is connected with an air filter.
And the inlet end of the hydraulic pump is connected with an oil suction filter.
And an oil return port of the hydraulic oil tank is connected with an oil return filter.
The brake pipeline terminal is a speed reducer or an axle.
By adopting the technology, the invention has the following beneficial effects:
(1) the automatic steering, braking and parking control of the articulated equipment is realized;
(2) meanwhile, an operation control system for manual driving is reserved, and the manual driving and the wire control two systems do not conflict with each other and have an uncoupled effect;
(3) one set of hydraulic braking system is reduced, namely the hydraulic braking system is combined with the hydraulic system, and the equipment cost is reduced.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in FIG. 1, the sweeping equipment braking and steering electrohydraulic control system of the invention comprises a hydraulic oil tank 14, a hydraulic pump 17, a flow distribution valve 10, a steering proportional valve 1, a steering oil cylinder 3, a steering gear 4, a steering reversing valve 2, a braking reversing valve 7, a braking oil path pressure regulating valve 9, a braking pipeline unloading valve 8, a braking pipeline terminal 6, a pressure sensor 19 and a control unit 18.
An inlet of the hydraulic pump 17 is connected to an oil suction port of the hydraulic oil tank 14, an outlet of the hydraulic pump 17 is connected to a first port of the flow distribution valve 10, a second port of the flow distribution valve 10 is connected to one port of the steering proportional valve 1, the other port of the steering proportional valve 1 is connected to a port P of the steering reversing valve 2, a port A of the steering reversing valve 2 is connected to a rodless cavity of the steering oil cylinder 3, a rod cavity of the steering oil cylinder 3 is connected to a port B of the steering reversing valve 2, and a port T of the steering reversing valve 2 is connected to an oil return port of the hydraulic oil tank 14.
A third port of the flow distribution valve 10 is connected to one port of the brake directional valve 7, and the other port of the brake directional valve 7 is connected to the brake pipe terminal 6.
One port of the brake pipeline unloading valve 8 is connected to the third port of the flow distribution valve 10, and the other port of the brake pipeline unloading valve 8 is connected to the oil return port of the hydraulic oil tank 14.
One port of the brake oil path pressure regulating valve 9 is connected to the third port of the flow distributing valve 10, and the other port of the brake oil path pressure regulating valve 9 is connected to the oil return port of the hydraulic oil tank 14.
The steering gear 4 is provided with a manual input end, a first port of the steering gear 4 is connected to the other port of the steering proportional valve 1, a second port of the steering gear 4 is connected to an oil return port of the hydraulic oil tank 14, a third port of the steering gear 4 is connected to a rodless cavity of the steering oil cylinder 3, and a fourth port of the steering gear 4 is connected to a rod cavity of the steering oil cylinder 3.
The pressure sensor 19 is disposed at the brake pedal for detecting a pedal pressure signal and transmitting it to the control unit 18.
The steering reversing valve 2, the steering proportional valve 1, the brake reversing valve 7, the brake pipeline unloading valve 8 and the hydraulic pump 17 are electrically connected to a control unit 18 respectively.
And a system pressure regulating valve 14 is connected to pipelines of an outlet end of the hydraulic pump 17 and an oil return port of the hydraulic oil tank 14.
And the manual input end of the steering gear 4 is connected with a steering wheel or a steering column. And the brake pipeline terminal 6 is a speed reducer or an axle.
The hydraulic oil tank 14 is internally provided with a liquid level meter 13, and an air inlet of the hydraulic oil tank 14 is connected with an air filter 15.
The inlet end of the hydraulic pump 17 is connected with an oil suction filter 16, and the oil return port of the hydraulic oil tank 14 is connected with an oil return filter 12.
The working principle of the invention is as follows: (1) and when the automatic driving steers: the control unit 18 controls the current of the steering proportional valve 1PV2 → thereby the flow rate of the steering proportional valve 1 to the steering oil cylinder 3 → further influences the steering speed, and the steering angle is determined according to the current and the power obtaining time (the flow rate priority valve and the system pressure are set);
(2) when the steering proportional valve 1 is not powered during manual driving, the steering wheel (or the steering column) drives the steering gear 4 to realize steering. Namely the system does not influence the normal manual driving steering;
(3) manual intervention steering during automatic driving has no destructive influence on the system, and the steering condition is comprehensively electrically controlled and has manual effect;
(4) the left and right steering is realized by switching the steering reversing valve 2;
(5) the hydraulic brake system of the present invention incorporates a hydraulic system. A flow distribution valve 10 is arranged between a steering pipeline and a brake pipeline, and because the pressure required by the brake system is lower than that of the steering system, a brake oil way pressure regulating valve 9 is additionally arranged in the brake system on the basis of a system pressure regulating valve 14;
(6) automatic driving and braking: the control unit 18 controls the brake reversing valve 7 and the brake pipeline unloading valve 8 to be electrified simultaneously;
(7) and parking: when the brake reversing valve 7 and the brake pipeline unloading valve 8 are simultaneously electrified, the brake reversing valve 7 is disconnected;
(8) and (3) releasing the braking effect: the brake reversing valve 7 is powered on and the brake pipeline unloading valve 8 is powered off;
(9) braking during manual driving: a foot pedal (same as a conventional driving operation) is manually operated → the pressure sensor 19 transmits a foot pedal pressure signal to the control unit 18 → the control unit 18 controls the brake directional valve 7 and the brake pipe unloading valve 8 to be simultaneously energized.
While the invention has been described in connection with the above embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. Cleaning equipment braking turns to electric hydraulic control system, its characterized in that: which comprises a hydraulic oil tank, a hydraulic pump, a flow distribution valve, a steering proportional valve, a steering oil cylinder, a steering gear, a steering reversing valve, a brake oil way pressure regulating valve, a brake pipeline unloading valve, a brake pipeline terminal, a pressure sensor and a control unit,
the inlet of the hydraulic pump is connected to the oil suction port of the hydraulic oil tank, the outlet of the hydraulic pump is connected to the first port of the flow distribution valve, the second port of the flow distribution valve is connected to one port of the steering proportional valve, the other port of the steering proportional valve is connected to the P port of the steering reversing valve, the A port of the steering reversing valve is connected to the rodless cavity of the steering oil cylinder, the rod cavity of the steering oil cylinder is connected to the B port of the steering reversing valve, and the T port of the steering reversing valve is connected to the oil return port of the hydraulic oil tank;
a third port of the flow distribution valve is connected to one port of the brake reversing valve, and the other port of the brake reversing valve is connected to a brake pipeline terminal;
one port of the brake pipeline unloading valve is connected to the third port of the flow distribution valve, and the other port of the brake pipeline unloading valve is connected to an oil return port of the hydraulic oil tank;
one port of the brake oil path pressure regulating valve is connected to the third port of the flow distribution valve, and the other port of the brake oil path pressure regulating valve is connected to an oil return port of the hydraulic oil tank;
the steering gear is provided with a manual input end, a first port of the steering gear is connected to the other port of the steering proportional valve, a second port of the steering gear is connected to an oil return port of the hydraulic oil tank, a third port of the steering gear is connected to a rodless cavity of the steering oil cylinder, and a fourth port of the steering gear is connected to a rod cavity of the steering oil cylinder;
the pressure sensor is arranged at the position of the brake pedal and used for detecting a pedal pressure signal and transmitting the pedal pressure signal to the control unit;
the steering reversing valve, the steering proportional valve, the brake reversing valve, the brake pipeline unloading valve and the hydraulic pump are respectively and electrically connected to the control unit.
2. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: and a system pressure regulating valve is connected to pipelines of an outlet end of the hydraulic pump and an oil return port of the hydraulic oil tank.
3. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: and the manual input end of the steering gear is connected with a steering wheel or a steering column.
4. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: the inside of the hydraulic oil tank is provided with a liquid level meter.
5. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: and an air inlet of the hydraulic oil tank is connected with an air filter.
6. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: and the inlet end of the hydraulic pump is connected with an oil suction filter.
7. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: and an oil return port of the hydraulic oil tank is connected with an oil return filter.
8. The sweeping equipment brake steering electro-hydraulic control system of claim 1, wherein: the brake pipeline terminal is a speed reducer or an axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911405721.XA CN111003060B (en) | 2019-12-30 | 2019-12-30 | Braking and steering electro-hydraulic control system of sweeping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911405721.XA CN111003060B (en) | 2019-12-30 | 2019-12-30 | Braking and steering electro-hydraulic control system of sweeping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111003060A CN111003060A (en) | 2020-04-14 |
| CN111003060B true CN111003060B (en) | 2021-11-30 |
Family
ID=70119808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911405721.XA Active CN111003060B (en) | 2019-12-30 | 2019-12-30 | Braking and steering electro-hydraulic control system of sweeping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111003060B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116834946A (en) * | 2021-01-18 | 2023-10-03 | 何春远 | Method for coping physical and environmental limit problems of transportation means and application thereof |
| CN114179907B (en) * | 2022-01-06 | 2022-11-01 | 安徽合力股份有限公司 | Hydraulic steering and parking braking control system for electric industrial vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010056356A1 (en) * | 2008-11-17 | 2010-05-20 | Allan Rosman | Hybrid hydraulic drive system with accumulator as chassis of vehicle |
| CN202608870U (en) * | 2012-04-17 | 2012-12-19 | 高红 | Steering and braking control device of crawler walking machinery full-hydraulic steering wheel |
| CN106741159A (en) * | 2017-01-16 | 2017-05-31 | 南京航空航天大学 | A kind of integrated power assisting device of automobile chassis and its control method |
| CN106995005A (en) * | 2017-05-02 | 2017-08-01 | 吉林大学 | A kind of line traffic control hydraulic braking steering |
| CN107842531A (en) * | 2016-09-21 | 2018-03-27 | 比亚迪股份有限公司 | The hydraulic integrated control system and vehicle of vehicle |
| GB2555884A (en) * | 2017-06-09 | 2018-05-16 | Liberty Vehicle Tech Limited | Fluidic control system |
| CN208360294U (en) * | 2018-04-28 | 2019-01-11 | 东风商用车有限公司 | Electro-hydraulic power-assisted steering brake system |
| CN109795327A (en) * | 2019-02-27 | 2019-05-24 | 浙江万达汽车方向机股份有限公司 | New energy automobile driving, braking and steering integrated system and method thereof |
| CN110239618A (en) * | 2019-06-28 | 2019-09-17 | 南京安洋智能科技有限公司 | A kind of drive-by-wire chassis of unmanned electric vehicle |
| CN110248854A (en) * | 2017-02-02 | 2019-09-17 | 克诺尔商用车制动系统有限公司 | The electrical equipment at least partly electrical braking and transfer of vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9067576B2 (en) * | 2011-09-16 | 2015-06-30 | International Truck Intellectual Property Company, Llc | Hydraulic powered park brake system |
-
2019
- 2019-12-30 CN CN201911405721.XA patent/CN111003060B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010056356A1 (en) * | 2008-11-17 | 2010-05-20 | Allan Rosman | Hybrid hydraulic drive system with accumulator as chassis of vehicle |
| CN202608870U (en) * | 2012-04-17 | 2012-12-19 | 高红 | Steering and braking control device of crawler walking machinery full-hydraulic steering wheel |
| CN107842531A (en) * | 2016-09-21 | 2018-03-27 | 比亚迪股份有限公司 | The hydraulic integrated control system and vehicle of vehicle |
| CN106741159A (en) * | 2017-01-16 | 2017-05-31 | 南京航空航天大学 | A kind of integrated power assisting device of automobile chassis and its control method |
| CN110248854A (en) * | 2017-02-02 | 2019-09-17 | 克诺尔商用车制动系统有限公司 | The electrical equipment at least partly electrical braking and transfer of vehicle |
| CN106995005A (en) * | 2017-05-02 | 2017-08-01 | 吉林大学 | A kind of line traffic control hydraulic braking steering |
| GB2555884A (en) * | 2017-06-09 | 2018-05-16 | Liberty Vehicle Tech Limited | Fluidic control system |
| CN208360294U (en) * | 2018-04-28 | 2019-01-11 | 东风商用车有限公司 | Electro-hydraulic power-assisted steering brake system |
| CN109795327A (en) * | 2019-02-27 | 2019-05-24 | 浙江万达汽车方向机股份有限公司 | New energy automobile driving, braking and steering integrated system and method thereof |
| CN110239618A (en) * | 2019-06-28 | 2019-09-17 | 南京安洋智能科技有限公司 | A kind of drive-by-wire chassis of unmanned electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111003060A (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105667477B (en) | A kind of all-wheel steering electric wheel truck line traffic control hydraulic parking braking system | |
| CN106458192B (en) | Braking system for motor vehicle | |
| US9022487B2 (en) | System and method for brake assisted turning | |
| KR102138401B1 (en) | Brake device and method for detecting atmosphere intrusion in pipe of brake device | |
| CN111003060B (en) | Braking and steering electro-hydraulic control system of sweeping equipment | |
| CN100556727C (en) | Fluid transmission means with improved traction control | |
| CN203528598U (en) | Multi-axis grouping steering device and multi-axis vehicle | |
| CN109562749A (en) | Equipment, braking system and the method that vehicle is braked independently of driver | |
| CN105899416B (en) | Braking system for motor vehicle | |
| CN107600174A (en) | Unmanned tractor fluid-link steering and brakes | |
| JP2017528369A (en) | Steering system for driven axle of vehicle | |
| CN105437964A (en) | Hydrostatic four-wheel drive system for trackless rubber-tyred command vehicle | |
| CN104192203A (en) | Automatic steering method and device | |
| DK2753531T3 (en) | Hydraulic control device | |
| CN103979101B (en) | Steering engine for unmanned plane hydraulic actuated work-saving device | |
| CN205524208U (en) | Electronic round of hydraulic pressure of drive -by -wire for car parking braking system of all wheel steering | |
| CN105579303A (en) | Brake device and use of a direction control valve in a brake device | |
| CN105459978B (en) | Hydraulic pressure process auxiliary drive and brake energy recovering system | |
| CN105008193A (en) | Fluid-pressure brake device for vehicle | |
| CN109109659A (en) | Wheeled agricultural machinery and its hydraulic travel system | |
| CN107585712B (en) | A kind of multidirectional fork truck skidding cornerite steering synchronization system | |
| CN112092793B (en) | Hydraulic braking system capable of realizing drive-by-wire and manual driving simultaneously and braking method | |
| CN109878486B (en) | Hydraulic and mechanical force coupled electric power-assisted brake system | |
| CN101450681B (en) | Numerical control hydraulic transmission multi-axle steering system | |
| CN203727353U (en) | Hydraulic drive axle traveling braking electric hydraulic control device for self-propelled grain combine-harvester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 364028 No. 42, Longteng South Road, Donghua community, Dongxiao Town, Xinluo District, Longyan City, Fujian Province Patentee after: Fulongma Group Co.,Ltd. Address before: 364000 Longyan Economic Development Zone, Longyan City, Fujian Province Patentee before: FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |