CN107813809A - Quarry tipper reduces the hydraulic system and braking method of service brake stroke - Google Patents
Quarry tipper reduces the hydraulic system and braking method of service brake stroke Download PDFInfo
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- CN107813809A CN107813809A CN201710972279.3A CN201710972279A CN107813809A CN 107813809 A CN107813809 A CN 107813809A CN 201710972279 A CN201710972279 A CN 201710972279A CN 107813809 A CN107813809 A CN 107813809A
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- 238000000034 method Methods 0.000 title claims description 9
- 239000003921 oil Substances 0.000 claims abstract description 85
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 238000013016 damping Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 claims 1
- 238000004904 shortening Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses the hydraulic system that a kind of quarry tipper reduces service brake stroke, including hydraulic oil container, hydraulic pump, combination brake valve, accumulator group, treadle valve, rear brake valve and brake；The pressure oil export of hydraulic pump connects with combining the pressure oil-in of brake valve and combining guide's hydraulic fluid port of the hydraulic control pilot valve in brake valve respectively, two oil inlets of the high pressure oil export and treadle valve that combine brake valve connect, the high pressure oil export of treadle valve is connected with the entrance of rear brake valve, guide's hydraulic fluid port of treadle valve connects with the guide's oil circuit of combination brake valve, two outlets of brake valve are connected with two hydraulic fluid ports of brake afterwards, for service brake after releasing parking braking and implementing, the off-load oil circuit of each valve collects to be connected with hydraulic oil container afterwards.The brake pressure that brake works is risen on the basis of certain pressure the invention enables service brake, so as to shorten the service brake time, improves brake efficiency.
Description
Technical field
A kind of improvement the present invention relates to quarry tipper hydraulic braking apart from braking principle, belongs to mining machinery field.
Background technology
Quarry tipper is to complete one kind weight that rock earthwork stripping and Ore Transportation task use in surface mine
Type dumper, there is carrying weight, the characteristics of powerful, quarry tipper includes dynamical system, electrical system, hydraulic system,
The parts such as frame section, driver's cabin, loading space, hydraulic system include hoisting system, steering, brakes, and brakes is
The important component of quarry tipper, it can be stopped in short distance during running car and maintain travel direction stability and in length
The braking of the ability, referred to as automobile of certain speed can be maintained during descending.The braking of automobile is one of main performance of automobile,
Braking is directly connected to traffic safety, major traffic accidents are often oversize with braking distance, brake hard when occur break away etc.
Situation is relevant, therefore the braking of automobile is the important leverage of vehicle safety travel.
Improve the braking of automobile, be Automobile Design manufacture and the vital task using department all the time.With emerging economies
Fast development, the demand of ore is continued to increase, in order to adapt to the requirement of this increasing, mining production is oriented big for mining industry
The tendency of typeization development, existing brake apparatus is typically made up of brake pedal, accumulator, brake disc and oil circuit pipeline, and car
Load-carrying is bigger, and potential energy when vehicle is run is bigger, and braking distance is longer, improves brakes principle, reduces brake and acts as
It is an effective measures for shortening braking distance with the time.
The content of the invention
The problem of existing for above-mentioned existing technology, the present invention provide the rear service brake principle after a kind of improvement, made
Service brake rises to the brake pressure that brake works on the basis of certain pressure, during so as to shorten service brake
Between, improve brake efficiency.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of quarry tipper reduces the hydraulic system of service brake stroke, including hydraulic oil container, hydraulic pump, combination brake valve,
Accumulator group, treadle valve, rear brake valve and brake；The pressure oil export of the hydraulic pump is respectively with combining the pressure of brake valve
Oil-in and guide's hydraulic fluid port connection of the hydraulic control pilot valve in combination brake valve, the high pressure oil export of the combination brake valve is with stepping on
Two oil inlets connection of plate valve, the high pressure oil export of the treadle valve are connected with the entrance of rear brake valve, the guide of treadle valve
Hydraulic fluid port is connected with the guide's oil circuit of combination brake valve, and two outlets of the rear brake valve are connected with two hydraulic fluid ports of brake,
For service brake after releasing parking braking and implementing, the off-load oil circuit of each valve collects to be connected with hydraulic oil container afterwards.
Preferably, the rear brake valve includes pressure-reducing valve, filter screen, damping, unloading valve, shuttle valve；Brake valve is set after described
There are A mouths, B mouths, P mouths, T3 mouths, Pb mouths；1 mouthful of connection of the P mouths of brake valve and shuttle valve afterwards, A mouth and resistance of the shuttle valve with rear brake valve
The entrance of Buddhist nun is connected, and 2 mouthfuls of pressure-reducing valve connect with the Pb mouths of rear brake valve, and 1 mouthful of pressure-reducing valve is connected with the entrance of filter screen, filter screen
Outlet connected with damping entrance, the outlet of damping and the entrance 1 of unloading valve connect, and the unloading port of pressure-reducing valve and unloading valve converges
The T3 mouths with rear brake valve are connected afterwards, and fluid flows back to hydraulic oil container.
Preferably, the P mouths of the rear brake valve and the A2 mouths of treadle valve connect, and the pressure oil in hydraulic pump is by combination
Brake valve and treadle valve, the P mouths of brake valve after, into combination brake valve；The A mouths of brake valve and the driving of brake after described
Brake pressure oil-in is connected, and brake is pressed, and implements service brake；The B mouths of brake valve and the parking of brake after described
Pressure oil port connects, for releasing parking braking；Pb connections of the Pb of brake valve with combining brake valve after described, connects parking system
Dynamic pipeline.
Preferably, the accumulator group is made up of rear accumulator and preceding accumulator.
Preferably, the combination brake valve includes magnetic valve, pilot operated directional control valve, check valve I and check valve II；Described group
Close brake valve and be provided with P mouths, AC1 mouths, AC2 mouths, G2 mouths, G3 mouths, T1 mouths, P1 mouths, P2 mouths and Pb mouths；The combination brake valve
P mouths and the pressure oil export of hydraulic pump connect, combine entrance of the P mouths of brake valve again with two check valves and connect, combination system
The P1 mouths of dynamic valve export intercommunication with AC1 mouths and check valve II, and preceding accumulator connects with combining the AC1 mouths of brake valve, combination braking
The outlet of the P2 mouths of valve and AC2 and check valve I is connected, and rear accumulator connects with combining the AC2 mouths of brake valve, pilot operated directional control valve
2 mouthfuls with 3 mouthfuls and AC2 mouth intercommunications of magnetic valve, the G2 mouths and hydraulic pump for combining brake valve are connected.
Preferably, when hydraulic pump works, it is work oil level that pilot operated directional control valve, which is replaced by right position, the 3 of pilot operated directional control valve
Mouth is connected with combining the G3 mouths of brake valve, and 1 mouthful of T1 mouth with combining brake valve of pilot operated directional control valve is connected, fluid off-load oil return
Case, 1 mouthful of AC2 mouth with combining brake valve of magnetic valve are connected, Pb mouths and the rear brake valve of 4 mouthfuls of combined brake valves of magnetic valve
Pb mouths connect, for connecting parking braking oil circuit, release parking braking, 2 mouthfuls of magnetic valve connect with combining the T1 mouths of brake valve
It is logical, oil circuit off-load oil return box.
A kind of quarry tipper reduces the braking method of service brake stroke, and this method is：Engine starts, and magnetic valve obtains
Electricity, the hydraulic oil in rear accumulator is by electromagnetic wire, and brake valve is combined in the Pb mouths outflow for flowing through combination brake valve, after
Brake valve after the Pb mouths of brake valve flow into, through pressure-reducing valve, flowed out from the B mouths of rear brake valve, discharge parking braking, oil stream is made after going out
Before the B mouths of dynamic valve, oil pressure is down to pressure-reducing valve setting pressure, and the excessive oil of pressure-reducing valve, the T mouths of brake valve flow back to hydraulic oil after
Case.At the same time, oil enters unloading valve pipeline, reaches shuttle valve by filter screen, damping, oil flows out valve at the A mouths of rear brake valve
Body, rear brake duct road is reached, oil pressure regulation is to 5 bars, and the T mouths of brake valve flow back to hydraulic oil container after the excessive oil of unloading valve passes through.
When implementing braking, treadle valve implementation effect, oil pressure rises to 50 bars, and into the P mouths of rear brake valve, oil pressure acts on reciprocal shuttle valve,
Overbottom pressure is overcome, the A mouths of brake valve, are braked after implementation after.When treadle valve discharges, rear service brake pressure is dropped under 5 Palestine and Israels,
Overbottom pressure pushes reciprocal shuttle valve plunger open, closes the P mouths of rear brake valve, overbottom pressure occurs on rear brake duct road.
Beneficial effects of the present invention：
When vehicle when driving, brake pedal implement service brake when, oil pressure rises to 50 bars, into rear brake valve P
Mouthful, oil pressure acts on reciprocal shuttle valve, overcomes overbottom pressure, the brake valve A mouths after, braked after implementation.In the hydraulic circuit of brake
The middle pressure oil for having 5 bars, when effectively shortening the settling time of brake pressure, while releasing parking braking, on 5 bar pressures basis
On reach the bar pressure of pressure-reducing valve setting value 60, shortened the releasing parking braking time.The brake onset time is reduced, is contracting
One effective measures of short braking distance, the reduction of brake onset time are the main reason for shortening braking distance.Work as system
When 5 bars of overbottom pressure be present in dynamic system, the brake onset time improves nearly 7.5%.
Brief description of the drawings
Fig. 1 is known service brake schematic diagram；
Fig. 2 is the hydraulic schematic diagram of the present invention；
Fig. 3 is that the rear brake valve in Fig. 2 amplifies connection figure with brake；
Fig. 4 is that the treadle valve in Fig. 2 amplifies connection figure with combining brake valve；
In figure：1st, rear brake valve, 2, brake, 3, treadle valve, 4, rear accumulator, 5, preceding accumulator, 6, combination brake valve, 7, liquid
Press pump, 8, hydraulic oil container, 1-1, pressure-reducing valve, 1-2, filter screen, 1-3, damping, 1-4, unloading valve, 1-5, shuttle valve, 6-1, magnetic valve,
6-2, pilot operated directional control valve, 6-3, check valve I, 6-4, check valve II.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, the present invention is further illustrated.
The service brake schematic diagram as known to Fig. 1 is, typically by brake pedal, accumulator, brake disc and oil circuit pipeline group
Into, and vehicle load is bigger, potential energy when vehicle is run is bigger, and braking distance is longer.Therefore, brakes principle is improved, is subtracted
Few brake onset time, it is an effective measures for shortening braking distance.
As shown in Fig. 2 a kind of quarry tipper reduces the hydraulic system of service brake stroke, including rear brake valve 1, braking
Device 2, treadle valve 3, rear accumulator 4, preceding accumulator 5, combination brake valve 6, hydraulic pump 7, hydraulic oil container 8.Hydraulic pump 7 becomes for constant pressure
Measure pump, the pressure oil export of hydraulic pump 7 respectively with combine brake valve 6 pressure oil-in and combination brake valve 6 in hydraulic control elder generation
Guide's hydraulic fluid port connection of pilot valve, the high pressure oil export of combination brake valve 6 are connected with two oil inlets of treadle valve 3, treadle valve 3
High pressure oil export is connected with the entrance of rear brake valve 1, and guide's hydraulic fluid port of treadle valve 3 connects with the guide's oil circuit of combination brake valve 6,
Two outlets of brake valve 1 are connected with two hydraulic fluid ports of brake 2 afterwards, for release parking braking and implement after service brake,
The off-load oil circuit of each valve is connected after collecting with hydraulic oil container 8.
As shown in figure 3, rear brake valve 1 includes pressure-reducing valve 1-1, filter screen 1-2, damping 1-3, unloading valve 1-4, shuttle valve 1-5；Afterwards
Brake valve 1 is provided with A mouths, B mouths, P mouths, T3 mouths, Pb mouths；
The P mouths of brake valve 1 are connected with 1 mouthful of shuttle valve 1-5 afterwards, and shuttle valve 1-5 connects with the A mouths of rear brake valve 1 and damping 1-3 entrance
Logical, 2 mouthfuls of pressure-reducing valve 1-1 are connected with the Pb mouths of rear brake valve 1, and 1 mouthful of pressure-reducing valve 1-1 is connected with filter screen 1-2 entrance, filter screen
1-2 outlet is connected with damping 1-3 entrances, is damped 1-3 outlet and is connected with unloading valve 1-4 entrance 1, pressure-reducing valve 1-1 and is unloaded
Lotus valve 1-4 unloading port converges the rear and T3 mouths of rear brake valve 1 and connected, and fluid flows back to hydraulic oil container 8.
The P mouths of brake valve 1 are connected with the A2 mouths of treadle valve 3 afterwards, pressure oil in hydraulic pump 7 by combination brake valve 6 and
Treadle valve 3, the P mouths of brake valve 1 after, into combination brake valve 6；The service brake pressure of the A mouths of brake valve 1 and brake 2 afterwards
Power oil-in is connected, and brake 2 is pressed, and implements service brake；The parking pressure oil port of the B mouths of brake valve 1 and brake 2 afterwards
Connection, for releasing parking braking；Pb connections of the Pb of brake valve 1 with combining brake valve 5 afterwards, connect parking braking pipeline.
As shown in figure 4, combination brake valve 6 includes magnetic valve 6-1, pilot operated directional control valve 6-2, the 6-3 of check valve I and check valve II
6-4；Combination brake valve 6 is provided with P mouths, AC1 mouths, AC2 mouths, G2 mouths, G3 mouths, T1 mouths, P1 mouths, P2 mouths and Pb mouths；Combination system
The P mouths of dynamic valve 6 are connected with the pressure oil export of hydraulic pump 7, are combined entrance of the P mouths of brake valve 6 again with two check valves and are connected,
The P1 mouths and AC1 mouths and the 6-4 of check valve II outlet intercommunications, preceding accumulator 5 for combining brake valve 6 connect with combining the AC1 mouths of brake valve 6
Connect, the outlet of the P2 mouths and the AC2 and 6-3 of check valve I that combine brake valve 6 is connected, rear accumulator 4 and the AC2 mouths for combining brake valve 6
Connection, 2 mouthfuls of pilot operated directional control valve 6-2 with 3 mouthfuls of magnetic valve 6-1 and AC2 mouth intercommunications, combine brake valve 6 G2 mouths and hydraulic pump 7
Connect.When hydraulic pump 7 works, it is work oil level that pilot operated directional control valve 6-2, which is replaced by right position, 3 mouthfuls of pilot operated directional control valve 6-2 and group
The G3 mouths for closing brake valve 6 are connected, and pilot operated directional control valve 6-2 1 mouthful of T1 mouth with combining brake valve 6 is connected, fluid off-load oil return box,
1 mouthful of magnetic valve 6-1 is connected with combining the AC2 mouths of brake valve 6, and the Pb mouths of magnetic valve 6-1 4 mouthfuls of combined brake valves 6 are with after
The Pb mouths of brake valve 1 are connected, and for connecting parking braking oil circuit, release parking braking, 2 mouthfuls of magnetic valve 6-1 are braked with combining
The T1 mouths of valve 6 are connected, oil circuit off-load oil return box.
The course of work：
After engine start, quarry tipper is in holding state, when magnetic valve 6-1 is in off-position, the left positions of magnetic valve 6-1
For the oil level that works, the mesohigh oil of hydraulic pump 7 through accumulator 5 before the 6-3 of check valve I, the 6-4 of check valve II deposit and after in accumulator 4,
In case vehicle is braked after engine misses, the P1 mouths and P2 mouths of the combined brake valve 6 of another part hydraulic oil, lay in treadle valve
3 P1 mouths, at P2 mouths, in case providing service brake pressure, another combined brake valve of oil circuit hydraulic oil in the exit of hydraulic pump 7
6 G2 mouths, pilot operated directional control valve 6-2 is promoted to be replaced by right position, 1 mouthful and 3 mouthful of the pressure oil through magnetic valve 6-1 in rear accumulator 4, and
2 mouthfuls of pilot operated directional control valve 6-2 and 3 mouthfuls, into the guide's oil circuit Pp mouths of treadle valve 3, make vehicle front-rear axle while implement to brake, make
Vehicle is in parking braking state.
When pressing the magnetic valve 6-1 at combination brake valve 6, after magnetic valve 6-1 is powered, the right positions of magnetic valve 6-1 are work
Oil level, the Pb mouths of 1 mouthful and 4 mouthful outflow combination brake valve 6 of the pressure oil through magnetic valve 6-1, brake valve after inflow in rear accumulator 4
1 Pb mouths, the B mouths outflow of brake valve 1, into the parking braking chamber of brake 2, releases parking after pressure-reducing valve 1-1 and after
Braking, oil stream goes out before the B mouths of rear brake valve 1, and oil pressure is down to pressure-reducing valve 1-1 setting pressure, pressure-reducing valve 1-1 excessive oil,
The T mouths of brake valve 1 flow back to hydraulic oil container 8 after.At the same time, oil enters unloading valve 1-4 pipelines, by filter screen 1-2, damping 1-
3 reach shuttle valve 1-5, and oil flows out valve body at the A mouths of rear brake valve 1, reach rear brake duct road, and oil pressure regulation is to 5 bars, unloading valve
The T mouths of brake valve 1 flow back to hydraulic oil container 8 after oil warp excessive 1-4.
Now vehicle can walk, and when stepping on treadle valve 3, oil pressure rises to 50 bars, the combined system of pressure in rear accumulator 4
The P2 mouths outflow of dynamic valve 6, into the P2 mouths of treadle valve 3, pressure-reducing valve and A2 mouths through treadle valve 3 flow out treadle valve 3, made after flow direction
The P mouths of dynamic valve 1, fluid overcome the resistance of shuttle valve to push shuttle valve 1-5 steel balls to 2 by 1, that is, overcome unloading valve 1-4 pressure,
Into the service brake cavity of brake 2, implement braking, unloading valve 1-4 sets pressure as 5 bars, makes unloading valve 1-4 and brake 2
Between establish 5 bars of back pressures, when treadle valve 3 discharges, rear service brake pressure is dropped under 5 Palestine and Israels, and overbottom pressure pushes reciprocal shuttle valve plunger open,
The P mouths of rear brake valve 1 are closed, overbottom pressure occur on rear brake duct road.In this way, vehicle is implemented to press braking during braking
Power rises to 50 bars by 5 Buckie plinth, shortens the service brake pressure onset time, greatly improves retardation efficiency, while parking system
Dynamic oil circuit connects through filter screen 1-2 and damping hole 1-3 with unloading valve 1-4, when releasing parking braking, is reached on the basis of 5 bar pressures
To the bar pressure of pressure-reducing valve setting value 60, shorten and release the parking braking time.
General principle, the main features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the design is not restricted to the described embodiments, the original for simply illustrating the design described in above-described embodiment and specification
Reason, on the premise of the design spirit and scope are not departed from, the invention also has various changes and modifications, these change and
Improvement is both fallen within the range of claimed the design.The invention be claimed scope by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of quarry tipper reduces the hydraulic system of service brake stroke, it is characterised in that：Including hydraulic oil container（8）, liquid
Press pump（7）, combination brake valve（6）, accumulator group, treadle valve（3）, rear brake valve（1）And brake（2）；
The hydraulic pump（7）Pressure oil export respectively with combining brake valve（6）Pressure oil-in and combination brake valve（6）In
Hydraulic control pilot valve guide's hydraulic fluid port connection, the combination brake valve（6）High pressure oil export and treadle valve（3）Two oil-feeds
Mouth connection, the treadle valve（3）High pressure oil export and rear brake valve（1）Entrance connection, treadle valve（3）Guide's hydraulic fluid port and
Combine brake valve（6）Guide's oil circuit connection, it is described after brake valve（1）Two outlet and brake（2）Two hydraulic fluid ports connect
Connect, for service brake after releasing parking braking and implementing, the off-load oil circuit of each valve collects rear and hydraulic oil container（8）Connection.
2. the quarry tipper described according to right and requiring 1 reduces the hydraulic system of service brake stroke, it is characterised in that：Institute
State rear brake valve（1）Including pressure-reducing valve（1-1）, filter screen（1-2）, damping（1-3）, unloading valve（1-4）, shuttle valve（1-5）；
Brake valve after described（1）Provided with A mouths, B mouths, P mouths, T3 mouths, Pb mouths；
Brake valve afterwards（1）P mouths and shuttle valve（1-5）1 mouthful connection, shuttle valve（1-5）With rear brake valve（1）A mouths and damping（1-
3）Entrance connect, pressure-reducing valve（1-1）2 mouthfuls with rear brake valve（1）Pb mouths connection, pressure-reducing valve（1-1）1 mouthful and filter screen
（1-2）Entrance connect, filter screen（1-2）Outlet and damping（1-3）Entrance is connected, damping（1-3）Outlet and unloading valve（1-
4）Entrance 1 connect, pressure-reducing valve（1-1）And unloading valve（1-4）Unloading port converge after with rear brake valve（1）T3 mouths connect,
Fluid flows back to hydraulic oil container（8）.
3. the quarry tipper described according to right and requiring 2 reduces the hydraulic system of service brake stroke, it is characterised in that：Institute
State rear brake valve（1）P mouths and treadle valve（3）A2 mouths connection, hydraulic pump（7）In pressure oil by combination brake valve（6）
And treadle valve（3）, the brake valve after（1）P mouths, into combination brake valve（6）；
Brake valve after described（1）A mouths and brake（2）Service brake pressure oil-in connection, to brake（2）Pressure,
Implement service brake；
Brake valve after described（1）B mouths and brake（2）Parking pressure oil port connection, for releasing parking braking；
Brake valve after described（1）Pb with combining brake valve（5）Pb connections, connect parking braking pipeline.
4. the quarry tipper described according to right and requiring 1 reduces the hydraulic system of service brake stroke, it is characterised in that：Institute
Accumulator group is stated by rear accumulator（4）With preceding accumulator（5）Composition.
5. the quarry tipper described according to right and requiring 4 reduces the hydraulic system of service brake stroke, it is characterised in that：Institute
State combination brake valve（6）Including magnetic valve（6-1）, pilot operated directional control valve（6-2）, check valve I（6-3）With check valve II（6-4）；
The combination brake valve（6）Provided with P mouths, AC1 mouths, AC2 mouths, G2 mouths, G3 mouths, T1 mouths, P1 mouths, P2 mouths and Pb mouths；
The combination brake valve（6）P mouths and hydraulic pump（7）Pressure oil export connection, combine brake valve（6）P mouths again with
The entrance of two check valves is connected, and combines brake valve（6）P1 mouths and AC1 mouths and check valve II（6-4）Export intercommunication, preceding accumulation of energy
Device（5）With combining brake valve（6）AC1 mouths connection, combine brake valve（6）P2 mouths and AC2 and check valve I（6-3）Outlet
Connect, rear accumulator（4）With combining brake valve（6）AC2 mouths connection, pilot operated directional control valve（6-2）2 mouthfuls and magnetic valve（6-1）
3 mouthfuls and AC2 mouth intercommunications, combine brake valve（6）G2 mouths and hydraulic pump（7）Connect.
6. the quarry tipper described according to right and requiring 5 reduces the hydraulic system of service brake stroke, it is characterised in that：When
Hydraulic pump（7）During work, pilot operated directional control valve（6-2）It is work oil level to be replaced by right position, pilot operated directional control valve（6-2）3 mouthfuls and group
Close brake valve（6）G3 mouths connect, pilot operated directional control valve（6-2）1 mouthful with combining brake valve（6）T1 mouths connect, fluid off-load
Oil return box, magnetic valve（6-1）1 mouthful with combining brake valve（6）AC2 mouths connect, magnetic valve（6-1）4 mouthfuls of combined brakings
Valve（6）Pb mouths and rear brake valve（1）Pb mouths connect, for connecting parking braking oil circuit, release parking braking, magnetic valve
（6-1）2 mouthfuls with combining brake valve（6）T1 mouths connect, oil circuit off-load oil return box.
7. a kind of quarry tipper based on described in claim 1 reduces the braking method of the hydraulic system of service brake stroke,
Characterized in that, this method is：
Engine starts, magnetic valve（6-1）Must be electric, from rear accumulator（4）In hydraulic oil pass through electromagnetic wire（6-1）, flow through
Combine brake valve（6）Pb mouths outflow combination brake valve（6）, into rear brake valve（1）Pb mouths flow into after brake valve（1）, warp
Pressure-reducing valve（1-1）, from rear brake valve（1）The outflow of B mouths, discharge parking braking, oil stream goes out rear brake valve（1）B mouths before, oil
Pressure drop is to pressure-reducing valve（1-1）Set pressure, pressure-reducing valve（1-1）Excessive oil, the brake valve after（1）T mouths flow back to hydraulic oil container
（8）.
8. quarry tipper according to claim 7 reduces the braking method of service brake stroke, it is characterised in that：Oil enters
Enter unloading valve（1-4）Pipeline, by filter screen（1-2）, damping（1-3）Reach shuttle valve（1-5）, it is oily from rear brake valve（1）A mouths at
Valve body is flowed out, reaches rear brake duct road, oil pressure regulation is to 5 bars, unloading valve（1-4）Brake valve after excessive oil warp（1）T mouths
Flow back to hydraulic oil container（8）.
9. quarry tipper according to claim 7 reduces the braking method of service brake stroke, it is characterised in that：Implement
During braking, treadle valve（3）Implementation acts on, and oil pressure rises to 50 bars, into rear brake valve（1）P mouths, oil pressure acts on reciprocal shuttle valve
（1-5）, overbottom pressure is overcome, the brake valve after（1）A mouths, braked after implementation.
10. quarry tipper according to claim 7 reduces the braking method of service brake stroke, it is characterised in that：When
Treadle valve（3）Release, rear service brake pressure are dropped under 5 Palestine and Israels, and overbottom pressure pushes reciprocal shuttle valve open（1-5）Plunger, made after closing
Dynamic valve（1）P mouths, there is overbottom pressure on rear brake duct road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972279.3A CN107813809B (en) | 2017-10-18 | 2017-10-18 | Hydraulic system for reducing service braking stroke of mining dump truck and braking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972279.3A CN107813809B (en) | 2017-10-18 | 2017-10-18 | Hydraulic system for reducing service braking stroke of mining dump truck and braking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107813809A true CN107813809A (en) | 2018-03-20 |
| CN107813809B CN107813809B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710972279.3A Active CN107813809B (en) | 2017-10-18 | 2017-10-18 | Hydraulic system for reducing service braking stroke of mining dump truck and braking method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928413A (en) * | 2021-11-29 | 2022-01-14 | 广州电力机车有限公司 | 60T pure electric mine watering lorry hydraulic system |
| CN111775913B (en) * | 2020-07-28 | 2023-09-05 | 徐州徐工矿业机械有限公司 | Hydraulic emergency braking system of mining dump truck |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204783913U (en) * | 2015-06-30 | 2015-11-18 | 徐工集团工程机械股份有限公司 | Underground scraper hydraulic pressure guide oil supply unit |
| CN105459992A (en) * | 2015-03-16 | 2016-04-06 | 贵州詹阳动力重工有限公司 | Parking control method and device for wheel type hydraulic engineering vehicle |
| CN205149843U (en) * | 2015-03-16 | 2016-04-13 | 贵州詹阳动力重工有限公司 | Parking controlling means of wheeled hydraulic pressure machineshop car |
| CN106143456A (en) * | 2016-08-30 | 2016-11-23 | 安徽合力股份有限公司 | The brakes of large-tonnage storage battery forktruck |
| CN207291987U (en) * | 2017-10-18 | 2018-05-01 | 徐州徐工矿山机械有限公司 | A kind of quarry tipper reduces the hydraulic system of service brake stroke |
-
2017
- 2017-10-18 CN CN201710972279.3A patent/CN107813809B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459992A (en) * | 2015-03-16 | 2016-04-06 | 贵州詹阳动力重工有限公司 | Parking control method and device for wheel type hydraulic engineering vehicle |
| CN205149843U (en) * | 2015-03-16 | 2016-04-13 | 贵州詹阳动力重工有限公司 | Parking controlling means of wheeled hydraulic pressure machineshop car |
| CN204783913U (en) * | 2015-06-30 | 2015-11-18 | 徐工集团工程机械股份有限公司 | Underground scraper hydraulic pressure guide oil supply unit |
| CN106143456A (en) * | 2016-08-30 | 2016-11-23 | 安徽合力股份有限公司 | The brakes of large-tonnage storage battery forktruck |
| CN207291987U (en) * | 2017-10-18 | 2018-05-01 | 徐州徐工矿山机械有限公司 | A kind of quarry tipper reduces the hydraulic system of service brake stroke |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111775913B (en) * | 2020-07-28 | 2023-09-05 | 徐州徐工矿业机械有限公司 | Hydraulic emergency braking system of mining dump truck |
| CN113928413A (en) * | 2021-11-29 | 2022-01-14 | 广州电力机车有限公司 | 60T pure electric mine watering lorry hydraulic system |
| CN113928413B (en) * | 2021-11-29 | 2023-06-09 | 广州电力机车有限公司 | 60T pure electric mine watering lorry hydraulic system |
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| CN107813809B (en) | 2024-04-12 |
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