CN104401306B - A kind of Large Electric wheel quarry tipper hydraulic braking controls integrated system - Google Patents
A kind of Large Electric wheel quarry tipper hydraulic braking controls integrated system Download PDFInfo
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- CN104401306B CN104401306B CN201410711897.9A CN201410711897A CN104401306B CN 104401306 B CN104401306 B CN 104401306B CN 201410711897 A CN201410711897 A CN 201410711897A CN 104401306 B CN104401306 B CN 104401306B
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Classifications
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- 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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/103—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic in combination with other control devices
- B60T11/105—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic in combination with other control devices with brake locking after actuation, release of the brake by a different control device, e.g. gear lever
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- 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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/28—Valves specially adapted therefor
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
A kind of Large Electric wheel quarry tipper hydraulic braking controls integrated system, including variable pump, fuel tank, high-pressure filter, front wheel brake, rear wheel brake, parking brake, brake pedal valve, preceding pilot-actuated valve, rear pilot-actuated valve, the first accumulator, the second accumulator, the second shuttle valve, also include being provided with the integrated valve group of control for brake of multiple inserted valves, variable pump is connected through the integrated valve group of high-pressure filter and control for brake.Functional reliability of the present invention is high, is simple to manufacture, and use cost is low, and the integrated special hydraulic braking control system of the general Hydraulic Elements of selection standard, element centralized arrangement, degree of integration is high, occupies little space, and pipeline is few, is easy to maintenance；Simple to operate, powerful, automatic controlling level is high, and action interlock connection is perfect, and security performance is high, is suitable for the control for brake of large-scale mine self-unloading vehicle device.
Description
Technical field
The present invention relates to a kind of hydraulic braking control integrated system, more particularly, to a kind of Large Electric wheel quarry tipper
Hydraulic braking controls integrated system.
Background technology
Electric Motor Wheel mine dumper hydraulic braking control system is one of Electric Motor Wheel transport vehicle core technology.It is similar both at home and abroad
The hydraulic braking control system of product mostly using traditional control system being made up of multiple discrete components, with element it is many,
The defect such as pipeline is complicated, functional reliability is low, maintenance is troublesome, manufacturing cost is high；And due to being limited by bulk, control
Function is single between comparing, for example, the hydraulic braking control of the dumper of the early stage production such as little Song Diersers company, company of Byelorussia
System, is such.
The need for meet domestic large-tonnage Electric Motor Wheel Mine haul car, develop new advanced with integrated control feature
Hydraulic braking control system into urgent gesture.
The content of the invention
The technical problem to be solved in the present invention is the above-mentioned difference for overcoming prior art to exist, there is provided a kind of reliable operation
Property high, easy to maintenance, the Large Electric wheel quarry tipper hydraulic braking of low cost of manufacture control integrated system.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of Large Electric wheel quarry tipper hydraulic braking controls integrated system, including variable pump, fuel tank, filter pressed oil high
Device, front wheel brake, rear wheel brake, parking brake, brake pedal valve, preceding pilot-actuated valve, rear pilot-actuated valve, first
Accumulator, the second accumulator, the second shuttle valve, also including being provided with the integrated valve group of the control for brake of multiple inserted valves, variable pump is through height
Filter pressed oil device is connected with the integrated valve group of control for brake.
Further, the integrated valve group of the control for brake includes the first check valve, the second check valve, the 3rd check valve, first
Magnetic valve, the second magnetic valve, the 3rd magnetic valve, first throttle stop valve, the second throttling stop valve, pressure-reducing valve, sequence valve, first
Shuttle valve and deep fat shuttle valve；First check valve, the second check valve, the 3rd check valve, the first magnetic valve, the second magnetic valve, the 3rd electricity
Magnet valve, first throttle stop valve, the second throttling stop valve, pressure-reducing valve, sequence valve, the first shuttle valve and deep fat shuttle valve are plugged in oil
On the block of road.
Further, variable pump connects the oil inlet of oil path block, the oil recirculating port connecting tank of oil path block, system by high-pressure filter
The oil return opening of dynamic treadle valve and the oil return opening of preceding pilot-actuated valve, oil path block are provided with five pressure oil outlets：Braking and locking elder generation
Pilot power oil outlet, brake hard pilot pressure oil outlet, first brake pressure oil outlet, second brake pressure
Oil outlet and stopping brake pressure oil outlet, wherein, first brake pressure oil outlet of oil path block stores by first
Energy device is connected to the pressure oil input port of brake pedal valve and the pressure oil input port of rear pilot-actuated valve, second system of oil path block
Dynamic pressure oil outlet by the second accumulator be connected to preceding pilot-actuated valve pressure oil input port and brake pedal valve it is another
Pressure oil input port；The braking and locking pilot pressure oil outlet of oil path block is by the second shuttle valve and the pressure oil of brake pedal valve
Delivery outlet access together after pilot-actuated valve pilot control opening；The stopping brake pressure oil outlet of oil path block is directly accessed and stops
The pressure oil input port of car brake；The brake hard pilot pressure oil outlet of oil path block is directly accessed the elder generation of brake pedal valve
Lead control mouth.
Further, the oil inlet of oil path block is connected to first brake pressure oil outlet of oil path block through the first check valve,
The oil inlet of oil path block is connected to second brake pressure oil outlet of oil path block, the oil inlet warp of oil path block through the second check valve
3rd check valve, the 3rd magnetic valve are connected to the stopping brake pressure oil outlet of oil path block, the oil inlet of oil path block through pressure-reducing valve,
Second magnetic valve is connected to the braking and locking pilot pressure oil outlet of oil path block, and the oil inlet of oil path block is through the second check valve,
One shuttle valve, sequence valve are connected to the brake hard pilot pressure oil outlet of oil path block, and the first check valve, the second check valve are through warm
Oily shuttle valve, the first magnetic valve are connected to the control end of sequence valve, and the oil inlet of oil path block is through the first check valve, first throttle stop valve
The oil return opening of oil path block is connected to, second is connected between the oil return opening of oil path block and the second of oil path block brake pressure oil outlet
Throttling stop valve, the first shuttle valve two ends are respectively connected to first brake pressure oil outlet and second brake pressure of oil path block
Oil outlet.
Further, another pressure oil outlet of the brake pedal valve is connected to the pilot control opening of preceding pilot-actuated valve,
The pressure oil outlet of pilot-actuated valve is connected to the left rear wheel brake of rear wheel brake, another pressure of rear pilot-actuated valve afterwards
Oil outlet is connected to the off hind wheel brake of rear wheel brake, and the pressure oil outlet of preceding pilot-actuated valve is connected to front wheel brake
Near front wheel brake, another pressure oil outlet of preceding pilot-actuated valve is connected to the off-front wheel brake of front wheel brake.
Further, the variable pump is connected by oil absorption filter with fuel tank.
Functional reliability of the present invention is high, is simple to manufacture, and use cost is low, and the general Hydraulic Elements of selection standard are integrated special
Hydraulic braking control system, element centralized arrangement, degree of integration is high, occupies little space, and pipeline is few, is easy to maintenance；Operation letter
Single, powerful, automatic controlling level is high, and action interlock connection is perfect, and security performance is high, is suitable for large-scale mine dumper
The control for brake of equipment.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of the integrated valve group of control for brake of the invention；
Fig. 2 is the schematic diagram that Large Electric wheel quarry tipper hydraulic braking of the present invention controls integrated system；
Fig. 3 (a) is the front view of the integrated valve group of control for brake shown in Fig. 1；
Fig. 3（b）It is the top view of the integrated valve group of control for brake shown in Fig. 1；
Fig. 3（c）It is the right view of the integrated valve group of control for brake shown in Fig. 1；
Fig. 3（d）It is the upward view of the integrated valve group of control for brake shown in Fig. 1；
In figure：1.1st, first throttle stop valve；1.2nd, the second throttling stop valve；2.1st, the first check valve；2.2nd, second is single
To valve；2.3 the 3rd check valves；3rd, the first magnetic valve；4th, sequence valve；5.1st, the second magnetic valve；5.2nd, the 3rd magnetic valve；6th, depressurize
Valve；7th, oil path block；8th, the first shuttle valve；9th, deep fat shuttle valve；10th, variable pump；11st, oil absorption filter；12nd, high-pressure filter；
13.1st, the first accumulator；13.2nd, the second accumulator；14th, brake pedal valve；15.1st, rear pilot-actuated valve；15.2nd, preceding guide's control
Valve processed；16th, parking brake；17th, rear wheel brake；18th, front wheel brake；19th, the second shuttle valve；20th, fuel tank；P, oil path block
Oil inlet；The pressure oil input port of P1, brake pedal valve；Another pressure oil input port of P2, brake pedal valve；P3, preceding guide
Control the pressure oil input port of valve；The pressure oil input port of P4, rear pilot-actuated valve；The oil return opening of T, oil path block；T1, braking are stepped on
The oil return opening of plate valve；The oil return opening of T2, preceding pilot-actuated valve；The oil return opening of T3, rear pilot-actuated valve；The braking of PX1, oil path block
Locking pilot pressure oil outlet；The brake hard pilot pressure oil outlet of PX2, oil path block；A, first brake pressure oil
Delivery outlet；B, second brake pressure oil outlet；The stopping brake pressure oil outlet of K, oil path block；A1, brake pedal valve
Pressure oil outlet；Another pressure oil outlet of B1, brake pedal valve；The pressure oil outlet of A2, preceding pilot-actuated valve；
Another pressure oil outlet of B2, preceding pilot-actuated valve；The pressure oil outlet of A3, rear pilot-actuated valve；B3, rear pilot control
Another pressure oil outlet of valve；The pilot control opening of X1, brake pedal valve；The pilot control opening of X2, preceding pilot-actuated valve；
The pilot control opening of X3, rear pilot-actuated valve.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
A kind of Large Electric wheel quarry tipper hydraulic braking controls integrated system, including variable pump 10, fuel tank 20, high pressure
Oil filter 12, front wheel brake 18, rear wheel brake 17, parking brake 16, brake pedal valve 14, preceding guide
Control valve 15.2, rear pilot-actuated valve 15.1, the first accumulator 13.1, the second accumulator 13.2, the second shuttle valve 19
, also including being provided with the integrated valve group of the control for brake of multiple inserted valves, variable pump 10 is integrated through high-pressure filter 12 and control for brake
Valve group is connected.
The integrated valve group of control for brake include the first check valve 2.1, the second check valve 2.2, the 3rd check valve 2.3,
First magnetic valve 3, the second magnetic valve 5.1, the 3rd magnetic valve 5.2, first throttle stop valve 1.1, the second throttling stop valve
1.2nd, pressure-reducing valve 6, sequence valve 4, the first shuttle valve 8 and deep fat shuttle valve 9；First check valve 2.1, the second check valve 2.2,
3rd check valve 2.3, the first magnetic valve 3, the second magnetic valve 5.1, the 3rd magnetic valve 5.2, first throttle stop valve 1.1,
Second throttling stop valve 1.2, pressure-reducing valve 6, sequence valve 4, the first shuttle valve 8 and deep fat shuttle valve 9 are plugged in oil path block 7
On.
Variable pump 10 connects the oil inlet P of oil path block 7 by high-pressure filter 12, the oil return inlet T connected tank 20 of oil path block 7,
The oil return inlet T 1 of brake pedal valve 14 and the oil return inlet T 2 of preceding pilot-actuated valve 15.2, it is defeated that oil path block 7 is provided with five pressure oils
Outlet：Braking and locking pilot pressure oil outlet PX1, brake hard pilot pressure oil outlet PX2, first brake pressure oil
Delivery outlet A, second brake pressure oil outlet B and stopping brake pressure oil outlet K, wherein, first system of oil path block 7
Dynamic pressure oil outlet A is controlled by the pressure oil input port P1 and rear guide that the first accumulator 13.1 is connected to brake pedal valve 14
The pressure oil input port P4 of valve processed 15.1, second brake pressure oil outlet B of oil path block 7 passes through the second accumulator 13.2
It is connected to the pressure oil input port P3 of preceding pilot-actuated valve 15.2 and another pressure oil input port P2 of brake pedal valve 14；Oil path block
7 braking and locking pilot pressure oil outlet PX1 is by the second shuttle valve 19 and the pressure oil outlet A1 of brake pedal valve 14
The pilot control opening X3 of pilot-actuated valve 15.1 after accessing together；The stopping brake pressure oil outlet K of oil path block 7 directly connects
Enter the pressure oil input port of parking brake 16；The brake hard pilot pressure oil outlet PX2 of oil path block 7 is directly accessed system
The pilot control opening X1 of dynamic treadle valve 14.
The oil inlet P of oil path block 7 is connected to first brake pressure oil outlet A of oil path block 7 through the first check valve 2.1,
The oil inlet P of oil path block 7 is connected to second brake pressure oil outlet B of oil path block 7, oil path block 7 through the second check valve 2.2
Oil inlet P the stopping brake pressure oil outlet K of oil path block 7 is connected to through the 3rd check valve 2.3, the 3rd magnetic valve 5.2, oil
The oil inlet P of road block 7 is connected to the braking and locking pilot pressure oil outlet of oil path block 7 through pressure-reducing valve 6, the second magnetic valve 5.1
PX1, the oil inlet P of oil path block 7 is connected to the brake hard of oil path block 7 through the second check valve 2.2, the first shuttle valve 8, sequence valve 4
Pilot pressure oil outlet PX2, the first check valve 2.1, the second check valve 2.2 connect through deep fat shuttle valve 9, the first magnetic valve 3
To the control end of sequence valve 4, the oil inlet P of oil path block 7 is connected to oil circuit through the first check valve 2.1, first throttle stop valve 1.1
The oil return inlet T of block 7, is connected between the oil return inlet T of oil path block 7 and second brake pressure oil outlet B of oil path block 7
Two throttling stop valves 1.2, the two ends of the first shuttle valve 8 be respectively connected to oil path block 7 first brake pressure oil outlet A and second
Brake pressure oil outlet B.
Another pressure oil outlet B1 of the brake pedal valve 14 is connected to the pilot control opening of preceding pilot-actuated valve 15.2
X2, the pressure oil outlet A3 of rear pilot-actuated valve 15.1 are connected to the left rear wheel brake of rear wheel brake 17, rear pilot control
Another pressure oil outlet B3 of valve 15.1 is connected to the off hind wheel brake of rear wheel brake 17, the pressure of preceding pilot-actuated valve 15.2
Power oil outlet A2 is connected to the near front wheel brake of front wheel brake 18, another pressure oil outlet of preceding pilot-actuated valve 15.2
B2 is connected to the off-front wheel brake of front wheel brake 18.
The variable pump 10 is connected by oil absorption filter 11 with fuel tank 20.
Operation principle：The large-scale mining dump truck with electric wheels hydraulic braking control integrated system of the present invention, its control for brake
Process includes 3 brake riggings functions：Service braking, braking and locking, stopping brake, 2 brake safe defencive functions：It is automatic tight
Anxious braking protection, manual emergency braking protection.
Service braking：Brake pedal valve 14, from the pressure oil out of variable pump 10 by the first check valve
2.1st, first brake pressure oil outlet A of oil path block 7 gives the pressurising of the first accumulator 13.1, through the first accumulator
Pressure oil after 13.1 pressurisings through brake pedal valve 14 pressure oil input port P1 and pressure oil outlet A1, then through second
The pilot control opening X3 of pilot-actuated valve 15.1 after the arrival of shuttle valve 19, meanwhile, after the pressurising of the first accumulator 13.1
Pressure oil also flow into the pressure oil input port P4 of rear pilot-actuated valve 15.1, controlled in the guide of rear pilot-actuated valve 15.1
Pilot-actuated valve 15.1 starts action, the pressure oil input port of rear pilot-actuated valve 15.1 after in the presence of donsole X3 pressure oils
The pressure oil of P4 enters the pressure oil outlet A3 and another pressure oil outlet B3 of rear pilot-actuated valve 15.1, so as to reach
The left rear wheel brake and off hind wheel brake of rear wheel brake 17, realize the braking to trailing wheel.At the same time, from variable pump
10 pressure oil out also stores through second brake pressure oil outlet B of the second check valve 2.2, oil path block 7 to second
The energy pressurising of device 13.2, through the pressure oil after the pressurising of the second accumulator 13.2, through another pressure oil of brake pedal valve 14
Input port P2, another pressure oil outlet B1, the pilot control opening X2 of pilot-actuated valve 15.2 before reaching；Meanwhile, stored through second
Pressure oil after the energy pressurising of device 13.2 enters the pressure oil input port P3 of preceding pilot-actuated valve 15.2, in pilot control opening X2 pressures
Preceding pilot-actuated valve 15.2 starts action, the pressure oil of the pressure oil input port P3 of preceding pilot-actuated valve 15.2 in the presence of power oil
Into the pressure oil outlet A2 and another pressure oil outlet B2 of preceding pilot-actuated valve 15.2, so as to reach front wheel brake 18
Near front wheel brake and off-front wheel brake, realize braking to front-wheel.Preceding pilot-actuated valve 15.2 is used for front wheel brake
The oil-feeding control of device.
Braking and locking：Braking and locking function is mainly vehicle loading and is used when unloading, and is a kind of braking side of electronic implementation
Formula, acts only on trailing wheel.When the second magnetic valve 5.1 obtains electric, the pressure oil from variable pump 10 is by the electricity of pressure-reducing valve 6, second
Pilot-actuated valve after magnet valve 5.1, the braking and locking pilot pressure oil outlet PX1 of oil path block 7, the arrival of the second shuttle valve 19
15.1 pilot control opening X3, in the presence of pilot control opening X3 pressure oils, rear pilot-actuated valve 15.1 starts action, afterwards first
Lead control valve 15.1 pressure oil input port P4 pressure oil enter rear pilot-actuated valve 15.1 pressure oil outlet A3 and
Another pressure oil outlet B3, so as to reach the left rear wheel brake and off hind wheel brake of rear wheel brake 17, it is right to realize
The braking and locking of trailing wheel.
Stopping brake：It is mainly used in parking for a long time to use.When the 3rd 5.2 dead electricity of magnetic valve, into parking brake
16 oil pressure flows into fuel tank 20 by the 3rd magnetic valve 5.2, realizes stopping brake；When the 3rd magnetic valve 5.2 obtains electric, come
The pressure oil of independent variable pump 10 stops by the stopping brake pressure oil outlet K entrance of the 3rd magnetic valve 5.2, oil path block 7
Car brake, stopping brake is alleviated, and vehicle can just bring into operation.
Automatic emergency brake is protected：Due to when the damage of pump or other fortuitous events cause the system pressure to reduce, deep fat shuttle
Valve 9 will export the control mouth that a control pressure for reduction passes through the order of arrival valve 4 of the first magnetic valve 3, the valve element of sequence valve 4
Start action, the pressure oil release that the first accumulator 13.1 and the second accumulator 13.2 are stored, pressure oil is by the first shuttle
Valve 8, sequence valve 4, the brake hard pilot pressure oil outlet PX2 of oil path block 7 enter the pilot control of brake pedal valve 14
Mouth X1, in the presence of pilot control opening X1 pressure oils, brake pedal valve 14 starts action, i.e., equivalent to the action for stepping on pedal
, the pressure oil of the release of the first accumulator 13.1, then through pressure oil input port P1 and the pressure oil output of brake pedal valve 14
Mouthful A1, then after being reached through the second shuttle valve 19 pilot-actuated valve 15.1 pilot control opening X3, the first accumulator 13.1
The pressure oil for storing release also flows into the pressure oil input port P4 of rear pilot-actuated valve 15.1, in pilot control opening X3 pressures
In the presence of power oil, rear pilot-actuated valve 15.1 starts action, the pressure oil input port P4's of rear pilot-actuated valve 15.1
Pressure oil enters the pressure oil outlet A3 and another pressure oil outlet B3 of rear pilot-actuated valve 15.1, so that the trailing wheel system of arrival
The left rear wheel brake and off hind wheel brake of dynamic device 17, realize the braking to trailing wheel.At the same time, the second accumulator
The 13.2 pressure oils releases for storing, pressure oil out by brake pedal valve 14 another pressure oil input port P2, another
Pressure oil outlet B1, the pilot control opening X2 of pilot-actuated valve 15.2 before reaching, the pressure of the release of the second accumulator 13.2
The oily pressure oil input port P3 also into preceding pilot-actuated valve 15.2, in the presence of pilot control opening X2 pressure oils, preceding guide
Control valve 15.2 starts action, and the pressure oil of the pressure oil input port P3 of preceding pilot-actuated valve 15.2 enters preceding pilot-actuated valve
15.2 pressure oil outlet A2 and another pressure oil outlet B2, thus reach front wheel brake 18 near front wheel brake and
Off-front wheel brake, realizes the braking to front-wheel.By above step, automatic emergency brake protection is completed.
Manual emergency braking protection：Situations such as this function such as brake pedal in emergency circumstances, to fail, by hand switch reality
The braking applied.When the manual emergency brake switch in driver's cabin is opened, the first magnetic valve 3 is powered, and the first magnetic valve 3 is moved
Make, so that the pressure oil warp of the valve element action of control sequence valve 4, the first accumulator 13.1 and the release of the second accumulator 13.2
Cross the first shuttle valve 8, sequence valve 4, the brake hard pilot pressure oil outlet PX2 of oil path block 7 and enter brake pedal valve 14
Pilot control opening X1, in the presence of pilot control opening X1 pressure oils, brake pedal valve element 14 starts action, the first accumulator
The 13.1 pressure oil releases for storing, the pressure oil of release is defeated through the pressure oil input port P1 through brake pedal valve 14, pressure oil
The pilot control opening X3 of pilot-actuated valve 15.1, the pressure of the release of the first accumulator 13.1 after outlet A1, the arrival of the second shuttle valve 19
Power oil also flows into the pressure oil input port P4 of rear pilot-actuated valve 15.1, in the presence of pilot control opening X3 pressure oils,
Pilot-actuated valve 15.1 is acted afterwards, and the pressure oil of the pressure oil input port P4 of rear pilot-actuated valve 15.1 is first after entering
The pressure oil outlet A3 and another pressure oil outlet B3 of control valve 15.1 are led, so as to reach the left back of rear wheel brake 17
Wheel brake and off hind wheel brake, realize the braking to trailing wheel.At the same time, the pressure oil that the second accumulator 13.2 is stored
Release, another pressure oil input port P2, another pressure oil outlet B1 of the pressure oil of release by brake pedal valve 14, arrives
Up to the pilot control opening X2 of preceding pilot-actuated valve 15.2, the pressure oil of the release of the second accumulator 13.2 is also into preceding pilot control
The pressure oil input port P3 of valve 15.2, in the presence of pilot control opening X2 pressure oils, preceding pilot-actuated valve 15.2 starts action,
The pressure oil of the pressure oil input port P3 of preceding pilot-actuated valve 15.2 enters the pressure oil outlet A2 of preceding pilot-actuated valve 15.2
With another pressure oil outlet B2, so as to reach the near front wheel brake and off-front wheel brake of front wheel brake 18, it is right to realize
The braking of front-wheel.By above step, manual emergency braking protection is completed.
Claims (3)
1. a kind of Large Electric wheel quarry tipper hydraulic braking control integrated system, including variable pump（10）, fuel tank（20）, it is high
Filter pressed oil device（12）, front wheel brake（18）, rear wheel brake（17）, parking brake（16）, brake pedal valve（14）, preceding elder generation
Lead control valve（15.2）, rear pilot-actuated valve（15.1）, the first accumulator（13.1）, the second accumulator（13.2）, the second shuttle valve
（19）, it is characterised in that also including being provided with the integrated valve group of the control for brake of multiple inserted valves, variable pump（10）Through high-pressure filter
（12）It is connected with the integrated valve group of control for brake；
The integrated valve group of control for brake includes the first check valve（2.1）, the second check valve（2.2）, the 3rd check valve（2.3）、
First magnetic valve（3）, the second magnetic valve（5.1）, the 3rd magnetic valve（5.2）, first throttle stop valve（1.1）, second throttling cut
Only valve（1.2）, pressure-reducing valve（6）, sequence valve（4）, the first shuttle valve（8）With deep fat shuttle valve（9）；First check valve（2.1）, it is second single
To valve（2.2）, the 3rd check valve（2.3）, the first magnetic valve（3）, the second magnetic valve（5.1）, the 3rd magnetic valve（5.2）, first
Throttling stop valve（1.1）, the second throttling stop valve（1.2）, pressure-reducing valve（6）, sequence valve（4）, the first shuttle valve（8）With deep fat shuttle valve
（9）It is plugged in oil path block（7）On；
Variable pump（10）By high-pressure filter（12）Connect oil path block（7）Oil inlet P, oil path block（7）Oil return opening（T）Connect
Fuel tank（20）, brake pedal valve（14）Oil return opening（T1）And preceding pilot-actuated valve（15.2）Oil return opening（T2）, oil path block（7）
It is provided with five pressure oil outlets：Braking and locking pilot pressure oil outlet（PX1）, brake hard pilot pressure oil outlet
（PX2）, first brake pressure oil outlet（A）, second brake pressure oil outlet（B）Exported with stopping brake pressure oil
Mouthful（K）, wherein, oil path block（7）First brake pressure oil outlet（A）By the first accumulator（13.1）Braking is connected to step on
Plate valve（14）Pressure oil input port（P1）With rear pilot-actuated valve（15.1）Pressure oil input port（P4）, oil path block（7）'s
Second brake pressure oil outlet（B）By the second accumulator（13.2）It is connected to preceding pilot-actuated valve（15.2）Pressure oil it is defeated
Entrance（P3）With brake pedal valve（14）Another pressure oil input port（P2）；Oil path block（7）Braking and locking pilot pressure oil
Delivery outlet（PX1）By the second shuttle valve（19）With brake pedal valve（14）Pressure oil outlet（A1）Guide's control after accessing together
Valve processed（15.1）Pilot control opening（X3）；Oil path block（7）Stopping brake pressure oil outlet（K）It is directly accessed stopping brake
Device（16）Pressure oil input port；Oil path block（7）Brake hard pilot pressure oil outlet（PX2）It is directly accessed brake pedal
Valve（14）Pilot control opening（X1）；
The brake pedal valve（14）Another pressure oil outlet（B1）It is connected to preceding pilot-actuated valve（15.2）Pilot control
Mouthful（X2）, rear pilot-actuated valve（15.1）Pressure oil outlet（A3）It is connected to rear wheel brake（17）Left rear wheel brake,
Pilot-actuated valve afterwards（15.1）Another pressure oil outlet（B3）It is connected to rear wheel brake（17）Off hind wheel brake, preceding elder generation
Lead control valve（15.2）Pressure oil outlet（A2）It is connected to front wheel brake（18）Near front wheel brake, preceding pilot-actuated valve
（15.2）Another pressure oil outlet（B2）It is connected to front wheel brake（18）Off-front wheel brake.
2. Large Electric wheel quarry tipper hydraulic braking according to claim 1 controls integrated system, it is characterised in that
Oil path block（7）Oil inlet P through the first check valve（2.1）It is connected to oil path block（7）First brake pressure oil outlet（A）,
Oil path block（7）Oil inlet（P）Through the second check valve（2.2）It is connected to oil path block（7）Second brake pressure oil outlet B,
Oil path block（7）Oil inlet（P）Through the 3rd check valve（2.3）, the 3rd magnetic valve（5.2）It is connected to oil path block（7）Stopping brake
Pressure oil outlet（K）, oil path block（7）Oil inlet P through pressure-reducing valve（6）, the second magnetic valve（5.1）It is connected to oil path block（7）'s
Braking and locking pilot pressure oil outlet（PX1）, oil path block（7）Oil inlet P through the second check valve（2.2）, the first shuttle valve
（8）, sequence valve（4）It is connected to oil path block（7）Brake hard pilot pressure oil outlet（PX2）, the first check valve（2.1）,
Two check valves（2.2）Through deep fat shuttle valve（9）, the first magnetic valve（3）It is connected to sequence valve（4）Control end, oil path block（7）Enter
Hydraulic fluid port（P）Through the first check valve（2.1）, first throttle stop valve（1.1）It is connected to oil path block（7）Oil return opening（T）, oil path block
（7）Oil return opening（T）With oil path block（7）Second brake pressure oil outlet（B）Between be connected to the second throttling stop valve
（1.2）；
The large-scale mining dump truck with electric wheels hydraulic braking control integrated system of the present invention, its brake control process includes 3 bases
This braking function：Service braking, braking and locking, stopping brake, 2 brake safe defencive functions：Automatic emergency brake protection, hand
Dynamic brake hard protection；
Automatic emergency brake is protected：Due to when the damage of pump or other fortuitous events cause the system pressure to reduce, deep fat shuttle valve（9）
A control pressure for reduction will be exported and pass through the first magnetic valve（3）Order of arrival valve（4）Control mouth, sequence valve（4）Valve
Core starts action, the first accumulator（13.1）With the second accumulator（13.2）The pressure oil release for storing, pressure oil is by first
Shuttle valve（8）, sequence valve（4）, oil path block（7）Brake hard pilot pressure oil outlet（PX2）Into brake pedal valve（14）
Pilot control opening（X1）, in pilot control opening（X1）In the presence of pressure oil, brake pedal valve（14）Start action, i.e., quite
In the action for stepping on pedal, the first accumulator（13.1）The pressure oil of release, then through brake pedal valve（14）Pressure oil it is defeated
Entrance（P1）With pressure oil outlet（A1）, then through the second shuttle valve（19）Pilot-actuated valve after arrival（15.1）Pilot control
Mouthful（X3）, the first accumulator（13.1）The pressure oil for storing release also flows into rear pilot-actuated valve（15.1）Pressure oil it is defeated
Entrance（P4）, in pilot control opening（X3）In the presence of pressure oil, rear pilot-actuated valve（15.1）Start action, rear guide's control
Valve processed（15.1）Pressure oil input port（P4）Pressure oil enter rear pilot-actuated valve（15.1）Pressure oil outlet（A3）
With another pressure oil outlet（B3）, so as to reach rear wheel brake（17）Left rear wheel brake and off hind wheel brake, it is real
Now to the braking of trailing wheel；At the same time, the second accumulator（13.2）The pressure oil release for storing, pressure oil out is by braking
Treadle valve（14）Another pressure oil input port（P2）, another pressure oil outlet（B1）, pilot-actuated valve before reaching（15.2）
Pilot control opening（X2）, the second accumulator（13.2）The pressure oil of release is also into preceding pilot-actuated valve（15.2）Pressure oil
Input port（P3）, in pilot control opening（X2）In the presence of pressure oil, preceding pilot-actuated valve（15.2）Start action, preceding guide's control
Valve processed（15.2）Pressure oil input port（P3）Pressure oil enter preceding pilot-actuated valve（15.2）Pressure oil outlet（A2）
With another pressure oil outlet（B2）, so as to reach front wheel brake（18）Near front wheel brake and off-front wheel brake, it is real
Now to the braking of front-wheel；By above step, automatic emergency brake protection is completed.
3. Large Electric wheel quarry tipper hydraulic braking according to claim 1 controls integrated system, it is characterised in that
The variable pump（10）By oil absorption filter（11）With fuel tank（20）It is connected.
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| CN109263622B (en) * | 2018-09-30 | 2021-05-14 | 广西柳工机械股份有限公司 | Full hydraulic braking system with multiple braking paths and engineering machinery |
| CN110001608B (en) * | 2019-03-06 | 2021-09-10 | 江苏大学 | Automobile intelligent braking system based on road surface visual detection and control method thereof |
| WO2021060072A1 (en) * | 2019-09-24 | 2021-04-01 | 日立建機株式会社 | Dump truck |
| CN110843904A (en) * | 2019-11-14 | 2020-02-28 | 湘电重型装备有限公司 | Integrated steering and braking control system of large electric wheel dumper |
| CN113291270A (en) * | 2021-06-25 | 2021-08-24 | 徐州徐工矿业机械有限公司 | Unmanned brake hydraulic system of electric drive dumper |
| CN113650596B (en) * | 2021-09-16 | 2022-07-12 | 广西柳工机械股份有限公司 | Service braking system, control method and electric loader |
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| CN201745568U (en) * | 2010-08-18 | 2011-02-16 | 内蒙古北方重型汽车股份有限公司 | Heavy mineral dump truck brake control system |
| CN202608756U (en) * | 2012-05-17 | 2012-12-19 | 郑州宇通重工有限公司 | Hydraulic brake control system of mine dump truck |
| CN204264130U (en) * | 2014-12-02 | 2015-04-15 | 湘电重型装备有限公司 | Large Electric wheel quarry tipper hydraulic braking control integration system |
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| JPH0421743Y2 (en) * | 1984-12-28 | 1992-05-18 | ||
| US20070114092A1 (en) * | 2005-10-31 | 2007-05-24 | Caterpillar Inc. | Hydraulic brake and steering system |
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| CN201745568U (en) * | 2010-08-18 | 2011-02-16 | 内蒙古北方重型汽车股份有限公司 | Heavy mineral dump truck brake control system |
| CN202608756U (en) * | 2012-05-17 | 2012-12-19 | 郑州宇通重工有限公司 | Hydraulic brake control system of mine dump truck |
| CN204264130U (en) * | 2014-12-02 | 2015-04-15 | 湘电重型装备有限公司 | Large Electric wheel quarry tipper hydraulic braking control integration system |
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