CN108625425A - Ultra-large type excavator hydraulic system - Google Patents
Ultra-large type excavator hydraulic system Download PDFInfo
- Publication number
- CN108625425A CN108625425A CN201810622427.3A CN201810622427A CN108625425A CN 108625425 A CN108625425 A CN 108625425A CN 201810622427 A CN201810622427 A CN 201810622427A CN 108625425 A CN108625425 A CN 108625425A
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- China
- Prior art keywords
- guide
- bigeminy
- assembly
- valve
- dipper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012530 fluid Substances 0.000 claims abstract description 36
- 239000003921 oil Substances 0.000 claims abstract description 31
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 6
- 206010015856 Extrasystoles Diseases 0.000 claims description 58
- 239000000446 fuel Substances 0.000 claims description 20
- 238000012827 research and development Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000009897 systematic effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000001595 contractor effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a kind of ultra-large type excavator hydraulic systems, belong to a kind of hydraulic system of excavator.It includes mainly main valve, executive component, guide's assembly, engine assembly and hydraulic oil container；Further include plate valve and main pump assembly, main valve is in parallel with plate valve, it is connect with executive component after main valve and plate valve parallel connection, guide's hydraulic fluid port of main valve and plate valve is connect with guide's assembly, the oil inlet of main pump assembly is connected with hydraulic tank, the oil outlet of main pump assembly is connect with main valve and plate valve, and main pump assembly is connect with engine assembly.The present invention replaces a big valve assembly of script using two small-sized valve assemblies, is greatly saved cost, reduces research and development manufacture difficulty, breaks the situation that ultra-large type excavator is monopolized.Present invention is mainly used for ultra-large type excavators.
Description
Technical field
The invention belongs to a kind of hydraulic systems of excavator, specifically, more particularly to a kind of ultra-large type excavator liquid
Pressure system.
Background technology
The ultra-large type excavator of ultra-large type excavator, especially hundred ton or more, are mainly used in opening for large-scale mineral resources
The Large Constructions such as hair, large foundation construction, marine reclamation land engineering, are monopolized by foreign capitals brand for many years.Its own has concentrated digging
The state-of-the-art technology in pick machine field, therefore, equipment price are expensive, and core hydraulic pressure system price is even more high.Excavator hydraulic pressure
System is core control and the moving system of excavator, the fuel feeding circuit to each hydraulic action element and confession that define hydraulic pump
How oily mode, more hydraulic actuators assignment of traffic when acting and realize composite move simultaneously, determine excavator operation
When kinematics and dynamic (dynamical) characteristic, action be preferential and cooperation, interflow fuel feeding and straight line moving etc..
Currently, as excavator is by medium-and-large-sized excavator to ultra-large type excavator, tonnage constantly increases, mainly uses
Technical solution is to replace the main valve of stem diameter bigger, and to ensure that hydraulic system has enough flows, this results in valve body of main valve
Shape, weight, difficulty of processing constantly increase, the growth of the cost and price of hydraulic system also and then at double, meanwhile, research and development
Manufacture difficulty higher, quantity in stock are larger.
Invention content
It is an object of the invention to overcome drawbacks described above, a kind of ultra-large type excavator hydraulic system is provided, uses two
A small-sized valve assembly replaces a big valve assembly of script, is greatly saved cost, reduces research and development manufacture difficulty, breaks super
The situation that large excavator is monopolized.
The ultra-large type excavator hydraulic system, including main valve, executive component, guide's assembly, engine assembly and
Hydraulic oil container；Further include plate valve and main pump assembly, main valve is in parallel with plate valve, is connect with executive component after main valve and plate valve parallel connection,
Guide's hydraulic fluid port of main valve and plate valve is connect with guide's assembly, and the oil inlet of main pump assembly is connected with hydraulic tank, main pump assembly
Oil outlet is connect with main valve and plate valve, and main pump assembly is connect with engine assembly.
Further, the main valve includes swing arm one, swing arm bigeminy, dipper one, dipper bigeminy, scraper bowl one, returns
Turn that one, left lateral walks connection, right lateral walks connection, spare and straight line moving connection.
Further, the plate valve includes swing arm three, dipper three, scraper bowl bigeminy and revolution bigeminy；One He of swing arm
Swing arm bigeminy is in parallel with swing arm three, and dipper one and dipper bigeminy are in parallel with dipper three, and scraper bowl one and scraper bowl bigeminy are simultaneously
Connection, revolution one are in parallel with revolution bigeminy.
Further, the executive component includes bucket cylinder, boom cylinder, rotary motor, bucket arm cylinder, walking horse
Reach, scraper bowl one is connect with after scraper bowl bigeminy parallel connection with bucket cylinder, swing arm one and swing arm bigeminy it is in parallel with swing arm three after
It connect with boom cylinder, connect with rotary motor after revolution one and revolution bigeminy parallel connection, dipper one and dipper bigeminy and struggled against
It is connect with bucket arm cylinder after three parallel connection of bar, left lateral walks connection and right lateral is walked connection and connect with running motor.
Further, guide's assembly includes that left lateral walks guide and right lateral and walks guide's assembly, scraper bowl guide and swing arm elder generation
Lead assembly and revolution guide and dipper guide's assembly.
Further, the left lateral walks guide and right lateral walks guide's assembly and walks connection and right lateral by the left lateral to main valve respectively
It walks connection to be controlled, realizes main valve to running motor fuel feeding.
Further, the scraper bowl guide passes through the shovel of scraper bowl one, plate valve to main valve respectively with swing arm guide assembly
The swing arm three of bucket bigeminy and the swing arm one and swing arm bigeminy of main valve, plate valve is controlled, and realizes main valve and plate valve difference
Fuel feeding is collaborated to bucket cylinder and boom cylinder.
Further, the revolution guide passes through time of revolution one, plate valve to main valve respectively with dipper guide assembly
The dipper three of the dipper one and dipper bigeminy, plate valve that turn bigeminy and main valve is controlled, and realizes main valve and plate valve difference
Fuel feeding is collaborated to rotary motor and bucket arm cylinder.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the present invention is in parallel with newly-increased plate valve using small-sized main valve used in medium-and-large-sized excavator, instead of existing large size
Traditional main valve solves traditional main valve bulky, fabricates difficult problem, reduces ultra-large type excavator hydraulic system
R＆D costs and manufacturing cost；
2, the hydraulic system of ultra-large type excavator and the hydraulic system of medium-and-large-sized excavator be not general in the prior art, this hair
It is bright to be coordinated using original main valve and newly-increased plate valve, make ultra-large type excavator hydraulic system and medium-and-large-sized excavator hydraulic system
A platform is shared, most of element is general, these universal components only need spare set of system, greatly reduce hydraulic pressure
The inventory of system；
3, ultra-large type excavator and medium-and-large-sized excavator hydraulic system is general, is more simplified using operation, hence it is evident that reduces
Labor intensity；
4, ultra-large type excavator and the hydraulic system of medium-and-large-sized excavator share identical complete machine big data, but also research and development
More energy are dropped in power match, pipeline optimization, noise reduction, prolonged the service life etc. by personnel, are further improved
Product various aspects of performance solves the situation that ultra-large type excavator is monopolized by foreign capitals brand.
Description of the drawings
Fig. 1 is the systematic schematic diagram of medium-and-large-sized excavator；
Fig. 2 is the systematic schematic diagram of the present invention；
Fig. 3 is the systematic schematic diagram of main valve；
Fig. 4 is the systematic schematic diagram of plate valve；
Fig. 5 is part A partial enlarged view in Fig. 2；
Fig. 6 is part B partial enlarged view in Fig. 2；
Fig. 7 is C portion partial enlarged view in Fig. 2；
Fig. 8 is the front view of main valve；
Fig. 9 is sectional view along A-A in Fig. 8；
Figure 10 is B-B direction sectional view in Fig. 8；
Figure 11 is the front view of plate valve；
Figure 12 be in Figure 11 C-C to sectional view.
In figure, 1, main valve；2, plate valve；3, guide's assembly；4, bucket cylinder；5, boom cylinder；6, left lateral walks guide and the right side
Walking guide's assembly；7, collaborate valve block；8, scraper bowl guide and swing arm guide's assembly；9, guide and dipper guide's assembly are turned round；10、
Sebific duct；11, logic valve block；12, electromagnetism valve block；13, pilot control；14, main pump assembly；15, engine assembly；16, hydraulic oil
Case；17, rotary motor；18, bucket arm cylinder；19, running motor；20, dipper bigeminy；21, scraper bowl one；22, swing arm one；
23, right lateral walks connection；24, straight line moving joins；25, dipper one；26, spare；27, one is turned round；28, swing arm bigeminy；29, left
Walking connection；30, dipper three；31, scraper bowl bigeminy；32, bigeminy is turned round；33, swing arm three.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Fig. 2, ultra-large type excavator hydraulic system, including main valve 1, plate valve 2, executive component, guide's assembly 3,
Main pump assembly 14, engine assembly 15 and hydraulic oil container 16；Main valve 1 is in parallel by sebific duct 10 with plate valve 2, and main valve 1 and plate valve 2 are simultaneously
It is connect with executive component after connection, guide's hydraulic fluid port of main valve 1 and plate valve 2 is connect with guide's assembly 3, guide's assembly 3 and interflow valve block 7
Connection, interflow valve block 7 are connect by electromagnetism valve block 12 and pilot control 13 with main pump assembly, the oil inlet and liquid of main pump assembly 14
Pressure oil case 16 connects, and the oil outlet of main pump assembly 14 is connect with main valve 1 and plate valve 2, and main pump assembly 14 connects with engine assembly 15
It connects.
As shown in Fig. 3 and Fig. 8-10, the main valve 1 includes swing arm 1, swing arm bigeminy 28, dipper 1, dipper
Bigeminy 20, scraper bowl 1, revolution 1, left lateral walks connection 29, right lateral walks connection 23, spare 26 and straight line moving connection 24.
As shown in Fig. 4 and Figure 11-12, the plate valve 2 includes swing arm 3 33, dipper 3 30, scraper bowl bigeminy 31 and returns
Turn bigeminy 32；Swing arm 1 and swing arm bigeminy 28 are in parallel with swing arm 3 33, dipper 1 and dipper bigeminy 20 and dipper
3 30 is in parallel, and scraper bowl 1 is in parallel with scraper bowl bigeminy 31, and revolution 1 is in parallel with revolution bigeminy 32.
As illustrated in figs. 5-7, the executive component includes bucket cylinder 4, boom cylinder 5, rotary motor 17, bucket arm cylinder
18, running motor 19, scraper bowl 1 are connect with after 31 parallel connection of scraper bowl bigeminy with bucket cylinder 4, swing arm 1 and swing arm two
Connection 28 connect with after 3 33 parallel connection of swing arm with boom cylinder 5, turn round 1 it is in parallel with bigeminy 32 is turned round after with rotary motor
17 connections, dipper 1 and dipper bigeminy 20 are connect with after 3 30 parallel connection of dipper with bucket arm cylinder 18, and left lateral walks 29 Hes of connection
Right lateral is walked connection 23 and is connect with running motor 19；
Guide's assembly 3 including left lateral walk guide and right lateral walk guide's assembly 6, scraper bowl guide and swing arm guide assembly 8 and time
Turn guide and dipper guide assembly 9；Left lateral walks that guide walks guide's assembly 6 with right lateral and guide's hydraulic fluid port of main valve 1 is directly connected to, shovel
Guide's hydraulic fluid port that bucket guide passes through logic valve block 11 and main valve 1 with swing arm guide assembly 8 and revolution guide with dipper guide assembly 9
Connection；Left lateral walks guide and right lateral and walks that guide's assembly 6 walks connection 29 by the left lateral to main valve 1 respectively and right lateral is walked connection 23 and controlled
System realizes main valve 1 to 19 fuel feeding of running motor；Scraper bowl guide passes through the scraper bowl one to main valve 1 respectively with swing arm guide assembly 8
21, the scraper bowl bigeminy 31 of plate valve 2 and the swing arm 1 of main valve 1 and the swing arm 3 33 of swing arm bigeminy 28, plate valve 2 are controlled
System realizes that main valve 1 and plate valve 2 collaborate fuel feeding to bucket cylinder 4 and boom cylinder 5 respectively；Turn round guide and dipper guide assembly 9
Pass through the revolution bigeminy 32 of revolution 1, plate valve 2 to main valve 1 and the dipper 1 of main valve 1 and dipper bigeminy respectively
20, the dipper 3 30 of plate valve 2 is controlled, and realizes that main valve 1 and plate valve 2 respectively collaborate rotary motor 17 and bucket arm cylinder 18
Fuel feeding.
As shown in Figure 3 and Figure 4, the present invention at work, boom cylinder 5 by swing arm pilot-controlled main valve 1 and plate valve 2 not
Same connection realization action：The logical oil of guide's hydraulic fluid port 4pa2,5pa2, pb1, swing arm 1, swing arm bigeminy 28 move to right, swing arm 3 33
It moves to left, to realize that hydraulic fluid port 4A2, B1 collaborate to give boom cylinder 5 big chamber fuel feeding, hydraulic fluid port 4B2 oil returns so that swing arm completes lifting
Action；Conversely, the logical oil of guide's hydraulic fluid port 4pb2,5pb2, pa1, swing arm 1, swing arm bigeminy 28 move to left, swing arm 3 33 moves to right,
To realize that hydraulic fluid port 4B2 gives boom cylinder 5 small chamber fuel feeding, hydraulic fluid port 4A2, B1 oil return so that swing arm completes the action declined.
Bucket arm cylinder 18 is acted by the connection realization different from plate valve 2 of dipper pilot-controlled main valve 1：Guide's hydraulic fluid port 5pb5,
The logical oil of 4pa4, pb4, dipper 1, dipper 3 30 move to left, and dipper bigeminy 20 moves to right；To realize the interflow hydraulic fluid port 5B5, B4
Give bucket arm cylinder 18 small chamber fuel feeding, hydraulic fluid port 5A5, A4 oil return so that dipper completes stent action；Conversely, guide's hydraulic fluid port 5pa5,
The logical oil of 4pb4, pa4, dipper 1, dipper 3 30 move to right, and dipper bigeminy 20 moves to left；To realize the interflow hydraulic fluid port 5A5, A4
Give bucket arm cylinder 18 big chamber fuel feeding, hydraulic fluid port 5B5, B4 oil return so that dipper completes contractive action.
Bucket cylinder 4 is acted by the connection realization different from plate valve 2 of scraper bowl pilot-controlled main valve 1：Guide's hydraulic fluid port 4pa3,
The logical oil of pb3, scraper bowl 1 moves to right, scraper bowl bigeminy 31 moves to left；To realize that hydraulic fluid port 4A3 gives bucket cylinder 4 big chamber fuel feeding, hydraulic fluid port
4B3 oil returns so that scraper bowl completes contractive action；Conversely, the logical oil of guide's hydraulic fluid port 4pb3, pa3, scraper bowl 1 moves to left, scraper bowl two
Connection 31 moves to right；To realize that hydraulic fluid port 4B3, A3 collaborate to give bucket cylinder 4 small chamber fuel feeding, hydraulic fluid port A3 oil returns so that scraper bowl completes exhibition
Stretch action.
Rotary motor 17 is acted by turning round the connection realization different from plate valve 2 of pilot-controlled main valve 1：Guide's hydraulic fluid port 5pa3,
The logical oil of pa2, revolution 1, which moves to right, turns round bigeminy 32 moves to right；To realize that hydraulic fluid port 5A3, A2 collaborate to give rotary motor 17 fuel feeding,
Hydraulic fluid port 5B3, B2 oil return so that rotary motor 17 is turned round to side；Conversely, the logical oil of guide's hydraulic fluid port 5pb3, pb2, revolution 1
It moves to left, turn round bigeminy 32 and move to left；To realize that hydraulic fluid port 5B3, B2 collaborate to give rotary motor 17 fuel feeding, hydraulic fluid port 5A3, A2 oil return makes
Rotary motor 17 is obtained to turn round to the other side.
Running motor 19 is acted by the connection realization different from plate valve 2 of left and right walking pilot-controlled main valve 1：Guide's hydraulic fluid port
The logical oil of 5pa1,4pa1, left lateral walk that connection 29 moves to right, right lateral is walked connection 23 and moved to right；To realize that hydraulic fluid port 5A1,4A1 are supplied to running motor 19
Oil, hydraulic fluid port 5B1,4B1 oil return so that running motor 19 is walked to side；Conversely, the logical oil of guide's hydraulic fluid port 5pb1,4pb1, left lateral are walked
Connection 29 moves to left, right lateral is walked connection 23 and moved to left；To realize that hydraulic fluid port 5B1,4B1 give running motor 19 fuel feeding, hydraulic fluid port 5A1,4A1 oil return,
So that running motor 19 is walked to the other side.
Claims (8)
1. a kind of ultra-large type excavator hydraulic system, including main valve (1), executive component, guide's assembly (3), engine assembly
(15) and hydraulic oil container (16)；It is characterized in that：Further include plate valve (2) and main pump assembly (14), main valve (1) and plate valve (2) are simultaneously
It is connect with executive component after connection, main valve (1) and plate valve (2) are in parallel, guide's hydraulic fluid port and the guide's assembly of main valve (1) and plate valve (2)
(3) it connects, the oil inlet of main pump assembly (14) is connect with hydraulic oil container (16), oil outlet and the main valve (1) of main pump assembly (14)
It is connected with plate valve (2), main pump assembly (14) is connect with engine assembly (15).
2. ultra-large type excavator hydraulic system according to claim 1, it is characterised in that：The main valve (1) includes dynamic
Arm one (22), swing arm bigeminy (28), dipper one (25), dipper bigeminy (20), scraper bowl one (21), revolution one (27),
Left lateral walks connection (29), right lateral walks connection (23), spare (26) and straight line moving connection (24).
3. ultra-large type excavator hydraulic system according to claim 1, it is characterised in that：The plate valve (2) includes dynamic
Arm three (33), dipper three (30), scraper bowl bigeminy (31) and revolution bigeminy (32)；Swing arm one (22) and swing arm bigeminy (28)
In parallel with swing arm three (33), dipper one (25) and dipper bigeminy (20) are in parallel with dipper three (30), scraper bowl one (21)
In parallel with scraper bowl bigeminy (31), one (27) of revolution are in parallel with revolution bigeminy (32).
4. ultra-large type excavator hydraulic system according to claim 3, it is characterised in that：The executive component includes shovel
Struggle against oil cylinder (4), boom cylinder (5), rotary motor (17), bucket arm cylinder (18), running motor (19), scraper bowl one (21) and shovel
It is connect with bucket cylinder (4) after bucket bigeminy (31) is in parallel, swing arm one (22) and swing arm bigeminy (28) and swing arm three (33) are simultaneously
It connect, is connect with rotary motor (17) after one (27) of revolution are in parallel with revolution bigeminy (32), dipper with boom cylinder (5) after connection
It is connect with bucket arm cylinder (18) after one (25) and dipper bigeminy (20) are in parallel with dipper three (30), left lateral walks connection (29) and the right side
Walking connection (23) is connect with running motor (19).
5. ultra-large type excavator hydraulic system according to claim 4, it is characterised in that：Guide's assembly (3) packet
It includes left lateral and walks guide and right lateral and walk guide's assembly (6), scraper bowl guide and swing arm guide assembly (8) and turn round guide and dipper guide
Assembly (9).
6. ultra-large type excavator hydraulic system according to claim 5, it is characterised in that：The left lateral walks guide and the right side
Walking guide's assembly (6) walks connection (29) by the left lateral to main valve (1) respectively and right lateral is walked connection (23) and controlled, and realizes main valve
(1) to running motor (19) fuel feeding.
7. ultra-large type excavator hydraulic system according to claim 5, it is characterised in that：The scraper bowl guide and swing arm
Guide's assembly (8) passes through the scraper bowl bigeminy (31) of scraper bowl one (21), plate valve (2) to main valve (1) and main valve (1) respectively
Swing arm one (22) and the swing arm three (33) of swing arm bigeminy (28), plate valve (2) are controlled, and realize main valve (1) and plate valve (2)
Fuel feeding is collaborated to bucket cylinder (4) and boom cylinder (5) respectively.
8. ultra-large type excavator hydraulic system according to claim 5, it is characterised in that：The revolution guide and dipper
Guide's assembly (9) passes through the revolution bigeminy (32) of revolution one (27), plate valve (2) to main valve (1) and main valve (1) respectively
Dipper one (25) and the dipper three (30) of dipper bigeminy (20), plate valve (2) are controlled, and realize main valve (1) and plate valve (2)
Fuel feeding is collaborated to rotary motor (17) and bucket arm cylinder (18) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622427.3A CN108625425B (en) | 2018-06-15 | 2018-06-15 | Hydraulic system for ultra-large excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622427.3A CN108625425B (en) | 2018-06-15 | 2018-06-15 | Hydraulic system for ultra-large excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108625425A true CN108625425A (en) | 2018-10-09 |
| CN108625425B CN108625425B (en) | 2023-12-15 |
Family
ID=63691613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810622427.3A Active CN108625425B (en) | 2018-06-15 | 2018-06-15 | Hydraulic system for ultra-large excavator |
Country Status (1)
| Country | Link |
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| CN (1) | CN108625425B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351786A (en) * | 2021-12-25 | 2022-04-15 | 江苏汇智高端工程机械创新中心有限公司 | Hydraulic main valve and system of ultra-large mining excavator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199633A (en) * | 1995-01-20 | 1996-08-06 | Komatsu Ltd | Oil hydraulic circuit for hydraulic shovel |
| US20100162696A1 (en) * | 2006-08-10 | 2010-07-01 | Hitachi Construction Machinery Co., Ltd. | Hydraulic Drive Device for Large Hydraulic Excavator |
| CN103603971A (en) * | 2013-12-04 | 2014-02-26 | 湘潭大学 | Multi-way valve with single oil duct and double valve elements in parallel connection and used for high-power excavator |
| CN104019071A (en) * | 2014-06-10 | 2014-09-03 | 山东中川液压有限公司 | Energy-saving hydraulic valve used for hydraulic excavator |
| CN106640820A (en) * | 2017-01-22 | 2017-05-10 | 山东常林机械集团股份有限公司 | Multipath control valve |
| CN208346894U (en) * | 2018-06-15 | 2019-01-08 | 山东临工工程机械有限公司 | Ultra-large type excavator hydraulic system |
-
2018
- 2018-06-15 CN CN201810622427.3A patent/CN108625425B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199633A (en) * | 1995-01-20 | 1996-08-06 | Komatsu Ltd | Oil hydraulic circuit for hydraulic shovel |
| US20100162696A1 (en) * | 2006-08-10 | 2010-07-01 | Hitachi Construction Machinery Co., Ltd. | Hydraulic Drive Device for Large Hydraulic Excavator |
| CN103603971A (en) * | 2013-12-04 | 2014-02-26 | 湘潭大学 | Multi-way valve with single oil duct and double valve elements in parallel connection and used for high-power excavator |
| CN104019071A (en) * | 2014-06-10 | 2014-09-03 | 山东中川液压有限公司 | Energy-saving hydraulic valve used for hydraulic excavator |
| CN106640820A (en) * | 2017-01-22 | 2017-05-10 | 山东常林机械集团股份有限公司 | Multipath control valve |
| CN208346894U (en) * | 2018-06-15 | 2019-01-08 | 山东临工工程机械有限公司 | Ultra-large type excavator hydraulic system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351786A (en) * | 2021-12-25 | 2022-04-15 | 江苏汇智高端工程机械创新中心有限公司 | Hydraulic main valve and system of ultra-large mining excavator |
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| Publication number | Publication date |
|---|---|
| CN108625425B (en) | 2023-12-15 |
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