CN207291987U - A kind of quarry tipper reduces the hydraulic system of service brake stroke - Google Patents
A kind of quarry tipper reduces the hydraulic system of service brake stroke Download PDFInfo
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- CN207291987U CN207291987U CN201721342730.5U CN201721342730U CN207291987U CN 207291987 U CN207291987 U CN 207291987U CN 201721342730 U CN201721342730 U CN 201721342730U CN 207291987 U CN207291987 U CN 207291987U
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Abstract
The utility model 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 is connected 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 is connected 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 utility model causes service brake to rise to the brake pressure that brake works on the basis of certain pressure, so as to shorten the service brake time, improves brake efficiency.
Description
Technical field
A kind of improvement of quarry tipper hydraulic braking apart from braking principle is the utility model is related to, belongs to mining machinery neck
Domain.
Background technology
Quarry tipper is to complete one kind weight that rock earthwork stripping and Ore Transportation task use in surface mine
Type dumper, has carrying weight, and the characteristics of powerful, quarry tipper includes dynamical system, electrical system, hydraulic system,
The components such as frame section, driver's cabin, loading space, hydraulic system include hoisting system, steering, braking system, and braking system is
The important component of quarry tipper, when running car, can stop in short distance and maintain travel direction stability and in length
The ability of certain speed can be maintained during descending, is known as the braking of automobile.The braking of automobile is one of main performance of automobile,
Braking is directly related to traffic safety, major traffic accidents are often too long with braking distance, emergency braking when occur break away etc.
Situation is related, 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 raw materials 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 generally made 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 braking system principle, reduces brake and acts as
It is an effective measures for shortening braking distance with the time.
The content of the invention
For above-mentioned existing technology there are the problem of, the utility model provide it is a kind of it is improved after service brake it is former
Reason so that service brake rises to the brake pressure that brake works on the basis of certain pressure, so as to shorten driving
Braking time, improves brake efficiency.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of quarry tipper reduces the hydraulic system of service brake stroke, including hydraulic oil container, hydraulic pump, combination braking
Valve, accumulator group, treadle valve, rear brake valve and brake；The pressure oil export of the hydraulic pump is respectively with combining brake valve
Pressure 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
It is connected with two oil inlets of treadle valve, the high pressure oil export of the treadle valve is connected with the entrance of rear brake valve, treadle valve
Guide's hydraulic fluid port is connected with the guide's oil circuit of combination brake valve, and two outlets of the rear brake valve and two hydraulic fluid ports of brake connect
Connect, 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, strainer, damping, unloading valve, shuttle valve；Brake valve is set after described
There are A mouthfuls, B mouthfuls, P mouthfuls, T3 mouthfuls, Pb mouthfuls；The P mouths of brake valve are connected with 1 mouthful of 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 strainer, strainer
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 rear P mouths of brake valve are connected with the A2 mouths of treadle valve, 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 driving of the A mouths and brake of brake valve after described
Brake pressure oil-in connects, and presses to brake, implements service brake；The parking of the B mouths and brake of brake valve 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 of rear accumulator and preceding accumulator.
Preferably, the combination brake valve includes solenoid valve, pilot operated directional control valve, check valve I and check valve II；Described group
Close brake valve and be equipped with P mouthfuls, AC1 mouthfuls, AC2 mouthfuls, G2 mouthfuls, G3 mouthfuls, T1 mouthfuls, P1 mouthfuls, P2 mouthfuls and Pb mouthfuls；The combination brake valve
P mouths be connected with the pressure oil export of hydraulic pump, 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 mouthfuls and check valve II, and preceding accumulator is connected with combining the AC1 mouths of brake valve, combination braking
The P2 mouths of valve and the outlet of AC2 and check valve I are connected, and rear accumulator is connected with combining the AC2 mouths of brake valve, pilot operated directional control valve
2 mouthfuls with 3 mouthfuls of solenoid valve and AC2 mouthfuls of intercommunications, combine the G2 mouths of brake valve and connected with hydraulic pump.
Preferably, when hydraulic pump works, it is work oil level that pilot operated directional control valve, which is changed to 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 solenoid valve are connected, Pb mouths and the rear brake valve of 4 mouthfuls of combined brake valves of solenoid valve
Pb mouths connect, for connecting parking braking oil circuit, release parking braking, 2 mouthfuls of T1 mouths with combining brake valve of solenoid valve connect
It is logical, oil circuit off-load oil return box.
The beneficial effects of the utility model：
When vehicle when driving, brake pedal implement service brake when, oil pressure rises to 50 bars, is braked after
P mouthfuls of valve, oil pressure acts on reciprocal shuttle valve, overcomes overbottom pressure, brake valve A mouthfuls after, is braked after implementation.In the hydraulic oil of brake
There are 5 bars of pressure oil in road, when effectively shortening the settling time of brake pressure, while releasing parking braking, in 5 bar pressure bases
Reach 60 bar pressure of pressure reducing valve setting value on plinth, shorten the releasing parking braking time.The brake onset time is reduced, is
Shorten an effective measures of braking distance, the reduction of brake onset time is the main reason for shortening braking distance.When
There are during 5 bars of overbottom pressure in braking 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 utility model；
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,
7th, hydraulic pump, 8, hydraulic oil container, 1-1, pressure reducing valve, 1-2, strainer, 1-3, damping, 1-4, unloading valve, 1-5, shuttle valve, 6-1, electromagnetism
Valve, 6-2, pilot operated directional control valve, 6-3, check valve I, 6-4, check valve II.
Embodiment
Below in conjunction with attached drawing, the utility model is further described by specific embodiment.
If Fig. 1 is known service brake schematic diagram, generally 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, braking system principle is improved, is subtracted
Few brake onset time, 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
Amount 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 is connected 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, strainer 1-2, damping 1-3, unloading valve 1-4, shuttle valve 1-5；Afterwards
Brake valve 1 is equipped with A mouthfuls, B mouthfuls, P mouthfuls, T3 mouthfuls, Pb mouthfuls；
The P mouths of brake valve 1 are connected with 1 mouthful of shuttle valve 1-5 afterwards, shuttle valve 1-5 and the A mouths of rear brake valve 1 and entering for damping 1-3
Mouth is connected, and 2 mouthfuls of pressure reducing valve 1-1 connect with the Pb mouths of rear brake valve 1, and 1 mouthful of pressure reducing valve 1-1 is connected with the entrance of strainer 1-2,
The outlet of strainer 1-2 is connected with damping 1-3 entrances, is damped the outlet of 1-3 and is connected with the entrance 1 of unloading valve 1-4, pressure reducing valve 1-1
And the unloading port of unloading valve 1-4 converges the rear and T3 mouths of rear brake valve 1 and connects, 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 and brake 2 of brake valve 1 afterwards
Power oil-in connects, and presses to brake 2, implements service brake；The parking pressure oil port of the B mouths and brake 2 of brake valve 1 afterwards
Connection, for releasing parking braking；Pb connections of the Pb of brake valve 1 with combining brake valve 5 afterwards, connects parking braking pipeline.
As shown in figure 4, combination brake valve 6 includes solenoid valve 6-1, pilot operated directional control valve 6-2, I 6-3 of check valve and check valve II
6-4；Combine brake valve 6 and be equipped with P mouthfuls, AC1 mouthfuls, AC2 mouthfuls, G2 mouthfuls, G3 mouthfuls, T1 mouthfuls, P1 mouthfuls, P2 mouthfuls and Pb mouthfuls；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 mouthfuls and II 6-4 of check valve 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 I 6-3 of AC2 and check valve 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 solenoid valve 6-1 and AC2 mouthful intercommunications, the G2 mouths and hydraulic pump 7 of combination brake valve 6
Connect.When hydraulic pump 7 works, it is work oil level that pilot operated directional control valve 6-2, which is changed to 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 1 mouthful of T1 mouth with combining brake valve 6 of pilot operated directional control valve 6-2 is connected, fluid off-load oil return box,
AC2 mouth of 1 mouthful of solenoid valve 6-1 with combining brake valve 6 is connected, and the Pb mouths of 4 mouthfuls of combined brake valves 6 of solenoid valve 6-1 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 solenoid 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 solenoid valve 6-1 is in off-position, solenoid valve 6-1
Left position is work oil level, 7 mesohigh oil of hydraulic pump through accumulator 5 before I 6-3 of check valve, II 6-4 of check valve deposit and after accumulator
In 4, in case after engine misses vehicle brake, P1 mouths of the combined brake valve 6 of another part high pressure oil with P2 mouthfuls, lay in and stepping on
The P1 mouths of plate valve 3, at P2 mouthfuls, in case providing service brake pressure, another combined system of oil circuit hydraulic oil in 7 exit of hydraulic pump
G2 mouths of dynamic valve 6, promotion pilot operated directional control valve 6-2 are changed to right position, 1 mouthful and 3 through solenoid valve 6-1 of pressure oil in rear accumulator 4
Mouthful, and 2 mouthfuls of pilot operated directional control valve 6-2 and 3 mouthfuls, into Pp mouthfuls of the guide's oil circuit of treadle valve 3, make vehicle front-rear axle implement to make at the same time
It is dynamic, vehicle is in parking braking state.
When pressing the solenoid valve 6-1 at combination brake valve 6, after solenoid valve 6-1 is powered, the right positions of solenoid 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 solenoid 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 the setting pressure of pressure reducing valve 1-1, the excessive oil of pressure reducing valve 1-1,
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 strainer 1-2, damping 1-
3 reach shuttle valve 1-5, and oil flows out valve body from A mouths of rear brake valve 1 at, arrival rear brake duct road, and oil pressure adjusting 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.
Vehicle can walk at this time, and when stepping on treadle valve 3, oil pressure rises to 50 bars, the combined system of pressure in rear accumulator 4
P2 mouths of dynamic valve 6 flows out, and into the P2 mouths of treadle valve 3, pressure reducing valve and A2 mouthful outflow treadle valve 3 through treadle valve 3, make 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 the pressure of unloading valve 1-4,
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 braking efficiency, while parking system
Dynamic oil circuit is connected through strainer 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 60 bar pressure of pressure reducing valve setting value, shorten and release the parking braking time.
The basic principle, main features and advantages of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the design is not restricted to the described embodiments, the above embodiments and description only describe the design
Principle, on the premise of the design spirit and scope are not departed from, the utility model create also have various changes and modifications, this
A little changes and improvements are both fallen within the range of claimed the design.The utility model creates claimed scope by appended power
Sharp claim and its equivalent thereof.
Claims (7)
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 inlets
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. a kind of quarry tipper according to claim 1 reduces the hydraulic system of service brake stroke, it is characterised in that：
Brake valve after described（1）Including pressure reducing valve（1-1）, strainer（1-2）, damping（1-3）, unloading valve（1-4）, shuttle valve（1-5）；
Brake valve after described（1）Equipped with A mouthfuls, B mouthfuls, P mouthfuls, T3 mouthfuls, Pb mouthfuls；
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 strainer
（1-2）Entrance connect, strainer（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. a kind of quarry tipper according to claim 2 reduces the hydraulic system of service brake stroke, it is characterised in that：
Brake valve after described（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（6）Pb connections, connect parking braking pipeline.
4. a kind of quarry tipper according to claim 1 reduces the hydraulic system of service brake stroke, it is characterised in that：
The accumulator group is by rear accumulator（4）With preceding accumulator（5）Composition.
5. a kind of quarry tipper according to claim 4 reduces the hydraulic system of service brake stroke, it is characterised in that：
The combination brake valve（6）Including solenoid 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）Equipped with P mouthfuls, AC1 mouthfuls, AC2 mouthfuls, G2 mouthfuls, G3 mouthfuls, T1 mouthfuls, P1 mouthfuls, P2 mouthfuls and Pb mouthfuls；
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 mouthfuls 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 solenoid valve（6-1）
3 mouthfuls and AC2 mouthfuls of intercommunications, combine brake valve（6）G2 mouths and hydraulic pump（7）Connect.
6. a kind of quarry tipper according to claim 5 reduces the hydraulic system of service brake stroke, it is characterised in that：
Work as hydraulic pump（7）During work, pilot operated directional control valve（6-2）It is work oil level to be changed to right position, pilot operated directional control valve（6-2）3 mouthfuls with
Combine brake valve（6）G3 mouths connect, pilot operated directional control valve（6-2）1 mouthful with combining brake valve（6）T1 mouths connect, fluid unloads
Lotus oil return box, solenoid valve（6-1）1 mouthful with combining brake valve（6）AC2 mouths connect, solenoid valve（6-1）4 mouthfuls of combined systems
Dynamic valve（6）Pb mouths and rear brake valve（1）Pb mouths connect, for connecting parking braking oil circuit, release parking braking, solenoid 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 according to claim 1 reduces the hydraulic system of service brake stroke, it is characterised in that：
The hydraulic pump（7）Using constant pressure variable displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721342730.5U CN207291987U (en) | 2017-10-18 | 2017-10-18 | A kind of quarry tipper reduces the hydraulic system of service brake stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721342730.5U CN207291987U (en) | 2017-10-18 | 2017-10-18 | A kind of quarry tipper reduces the hydraulic system of service brake stroke |
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| Publication Number | Publication Date |
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| CN207291987U true CN207291987U (en) | 2018-05-01 |
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ID=62273179
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721342730.5U Active CN207291987U (en) | 2017-10-18 | 2017-10-18 | A kind of quarry tipper reduces the hydraulic system of service brake stroke |
Country Status (1)
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| CN (1) | CN207291987U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813809A (en) * | 2017-10-18 | 2018-03-20 | 徐州徐工矿山机械有限公司 | Quarry tipper reduces the hydraulic system and braking method of service brake stroke |
| CN109555747A (en) * | 2019-02-01 | 2019-04-02 | 杭叉集团股份有限公司 | A kind of forklift hydraulic system and fork truck pile-up valve |
| CN113915176A (en) * | 2021-03-23 | 2022-01-11 | 上海圣克赛斯液压股份有限公司 | Automatically controlled hydraulic system for driving a power plant |
-
2017
- 2017-10-18 CN CN201721342730.5U patent/CN207291987U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813809A (en) * | 2017-10-18 | 2018-03-20 | 徐州徐工矿山机械有限公司 | Quarry tipper reduces the hydraulic system and braking method of service brake stroke |
| CN107813809B (en) * | 2017-10-18 | 2024-04-12 | 徐州徐工矿业机械有限公司 | Hydraulic system for reducing service braking stroke of mining dump truck and braking method |
| CN109555747A (en) * | 2019-02-01 | 2019-04-02 | 杭叉集团股份有限公司 | A kind of forklift hydraulic system and fork truck pile-up valve |
| CN109555747B (en) * | 2019-02-01 | 2023-08-25 | 杭叉集团股份有限公司 | Fork truck hydraulic system and fork truck integrated valve |
| CN113915176A (en) * | 2021-03-23 | 2022-01-11 | 上海圣克赛斯液压股份有限公司 | Automatically controlled hydraulic system for driving a power plant |
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