CN109296023A - A kind of hydraulic machine that cuts into a mountain - Google Patents
A kind of hydraulic machine that cuts into a mountain Download PDFInfo
- Publication number
- CN109296023A CN109296023A CN201811326982.8A CN201811326982A CN109296023A CN 109296023 A CN109296023 A CN 109296023A CN 201811326982 A CN201811326982 A CN 201811326982A CN 109296023 A CN109296023 A CN 109296023A
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- China
- Prior art keywords
- valve
- quartering hammer
- forearm
- arm
- big
- 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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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
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Abstract
The invention discloses a kind of hydraulic machines that cuts into a mountain, including quartering hammer, working forearm, working large arm, driver's cabin, rotating platform of getting on the bus, lower body, further include flow-compensated system and self lubricating system.The flow-compensated system includes oil cylinder of small arm, big arm cylinder and the hydraulic machine hydraulic system that cuts into a mountain, and the oil cylinder of small arm controls the movement of the working forearm, the movement of the big arm cylinder control working large arm.The self lubricating system is connect with the quartering hammer, including by the sequentially connected compressor of pressure hose, moisture trap, oil fog generator, the outlet of the oil fog generator is connect with the lubricating oil inlet of the quartering hammer.The present invention realizes quartering hammer, and flow is not influenced by the movement of big forearm at work; ensure that quartering hammer inputs stable flow; improve quartering hammer service efficiency; the work that butter is frequently filled to quartering hammer is eliminated simultaneously; the working efficiency for improving equipment, preferably plays a protective role to quartering hammer.
Description
Technical field
The present invention relates to excavator technical fields, more particularly to a kind of hydraulic machine that cuts into a mountain.
Background technique
Traditional excavator will also operate while matching quartering hammer in use, quartering hammer is in strike to be pressed under quartering hammer
Make, the flow pumped at this time will not only be supplied to quartering hammer work while also cause quartering hammer to work to working arm pressing action
Instability of flow influences the operating efficiency of quartering hammer.And conventional excavators are matching quartering hammer in use, every two hour needs
Butter filler is carried out to quartering hammer, for reducing the abrasion of drill steel Yu quartering hammer precursor, filling gap periods are shorter comparatively laborious,
Reduce working efficiency.
Summary of the invention
It in view of the above shortcomings of the prior art, can be to avoid due to working arm the present invention provides a kind of hydraulic machine that cuts into a mountain
The pressing action problem unstable to quartering hammer bring fuel feeding, it is ensured that discharge stability of the quartering hammer in strike, more effectively
Raising productivity and protect the service life of quartering hammer, while eliminating the work for frequently filling butter to quartering hammer, improve
The working efficiency of equipment.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of hydraulic machine that cuts into a mountain, including quartering hammer, working forearm, working large arm, driver's cabin, rotating platform of getting on the bus, get off
Body, further includes flow-compensated system and self lubricating system,
The flow-compensated system includes oil cylinder of small arm, big arm cylinder and the hydraulic machine hydraulic system that cuts into a mountain, the forearm oil
Cylinder controls the movement of the working forearm, the movement of the big arm cylinder control working large arm, the hydraulic machine hydraulic pressure system that cuts into a mountain
System includes main pump, auxiliary pump, main multi-way valve, secondary multi-way valve, big forearm pilot valve, guide's switching valve, quartering hammer pilot valve, the master
Pump includes the first main pump, the second main pump, and first main pump passes through the first quartering hammer valve, the large arm valve of the main multi-way valve respectively
It is connect with the quartering hammer, big arm cylinder, second main pump passes through the second quartering hammer valve, the forearm of the main multi-way valve respectively
Valve is connect with the quartering hammer, oil cylinder of small arm, and the auxiliary pump is connected by the secondary multi-way valve and the oil cylinder of small arm, big arm cylinder
It connects, the big forearm pilot valve is connect by guide's switching valve with the large arm valve, forearm valve, the big forearm pilot valve
It is also connected with the secondary multi-way valve, the quartering hammer pilot valve and the first quartering hammer valve, the second quartering hammer valve, guide switch
Valve connection,
The self lubricating system is connect with the quartering hammer, including passes through the sequentially connected compressor of pressure hose, air water
The outlet of separator, oil fog generator, the oil fog generator is connect with the lubricating oil inlet of the quartering hammer.
As optimization, avoid pressing for ensuring the cleannes of air inlet in the entrance access air intake filter of the compressor
Contracting machine, which sucks dirtier air, to be caused to damage.
As optimization, it is provided with unloading valve between the compressor and the moisture trap, in anti-locking system
Compressed gas generates excessively high pressure and causes the damage of components.
As optimization, the compressed gas of the compressor output 6bar, the pressure of the unloading valve off-load is 8bar.
As optimization, the first quartering hammer valve, the second quartering hammer valve, large arm valve, forearm valve, guide's switching valve, pair are more
Road valve be equipped with bypass spool transposition oil inlet, for control the first quartering hammer valve, the second quartering hammer valve, large arm valve, forearm valve,
The open/close of guide's switching valve, secondary multi-way valve.
As optimization, the big forearm pilot valve by the oil outlet of guide's switching valve respectively with the large arm valve and
The bypass spool transposition oil inlet connection of the forearm valve, bypass spool of the big forearm pilot valve also with the secondary multi-way valve
Replace oil inlet connection, the quartering hammer pilot valve and the first quartering hammer valve, the second quartering hammer valve and guide's switching valve
Bypass spool transposition oil inlet connection.
As optimization, the pair multi-way valve includes the first secondary multi-way valve and the second secondary multi-way valve, and the auxiliary pump passes through described
First secondary multi-way valve is connect with the oil cylinder of small arm and forearm valve, and the auxiliary pump passes through the described second secondary multi-way valve and the large arm
Oil cylinder is connected with large arm valve.
As optimization, the big forearm pilot valve includes large arm pilot valve and forearm pilot valve, guide's switching valve packet
Include first guide's switching valve and second guide's switching valve；The large arm pilot valve and the oil inlet of the first guide switching valve connect
It connects, the forearm pilot valve is connect with the oil inlet of the second guide switching valve.
As optimization, when the quartering hammer does not work, the quartering hammer pilot valve controls the first quartering hammer valve, second
Quartering hammer valve is closed, and the spool of guide's switching valve is in Self-resetting state, and the big forearm pilot valve is switched by guide
Valve controls the large arm valve, forearm valve, and controls the secondary multi-way valve, makes the valve of the large arm valve, forearm valve, secondary multi-way valve
Core is opened, and the main pump and auxiliary pump are closed by large arm valve, forearm valve and secondary multi-way valve difference pressure oil output by piping connection
It is supplied to the oil cylinder of small arm and big arm cylinder after stream, completes big forearm movement.
As optimization, when the quartering hammer works, the quartering hammer pilot valve controls the first quartering hammer valve, second broken
Broken hammer valve is opened, and is controlled guide's switching valve and closed spool, causes the big forearm pilot valve not can control described big
Arm valve, forearm valve are opened, and the large arm valve, forearm valve are in close state, and the auxiliary pump provides pressure by the secondary multi-way valve
Power oil gives the oil cylinder of small arm and big arm cylinder fuel feeding by piping connection, completes big forearm movement；The main pump passes through described
First quartering hammer valve and the second quartering hammer valve provide pressure oil, give the quartering hammer fuel feeding by piping connection.
The beneficial effects of the present invention are:
The present invention realizes quartering hammer, and flow is not influenced by the movement of big forearm at work, it is ensured that quartering hammer input is stablized
Flow, improve quartering hammer service efficiency, while eliminating the work for frequently filling butter to quartering hammer, improve equipment
Working efficiency preferably plays a protective role to quartering hammer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hydraulic machine that cuts into a mountain of the present invention.
Fig. 2 is the systematic schematic diagram of flow-compensated system.
Fig. 3 is the schematic illustration of flow-compensated system when quartering hammer does not work.
Fig. 4 is the schematic illustration of flow-compensated system when quartering hammer work.
Fig. 5 is the composition figure of self lubricating system.
In attached drawing, 1 is main pump, and 11 be the first main pump, and 12 be the second main pump, and 2 be auxiliary pump, and 3 be main multi-way valve, and 31 be first
Quartering hammer valve, 32 be the second quartering hammer valve, and 33 be large arm valve, and 331 be big arm cylinder, and 34 be forearm valve, and 341 be oil cylinder of small arm, 4
It is the first secondary multi-way valve for secondary multi-way valve, 41,42 be the second secondary multi-way valve, and 5 be big forearm pilot valve, and 51 be large arm pilot valve,
52 be forearm pilot valve, and 6 be guide's switching valve, and 7 be quartering hammer pilot valve, and 71 be quartering hammer, and 72 be oil fog generator, and 73 be gas
Separator, 74 be unloading valve, and 75 be compressor, and 76 be air intake filter, and 8 be driver's cabin, and 81 be rotating platform of getting on the bus, and 82 are
Lower body, 83 be working forearm, and 84 be working large arm.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
The hydraulic machine that cuts into a mountain of one kind shown in referring to Fig.1, including quartering hammer 71, working forearm 83, working large arm 84, driver's cabin
8, it gets on the bus rotating platform 81, lower body 82, flow-compensated system and self lubricating system.
It is hydraulic referring to flow-compensated system shown in Fig. 2, including oil cylinder of small arm 341, big arm cylinder 331 and the hydraulic machine that cuts into a mountain
System, oil cylinder of small arm 341 control the movement of working forearm 83, and big arm cylinder 331 controls the movement of working large arm 84.It is hydraulic to cut into a mountain
Machine hydraulic system includes main pump 1, auxiliary pump 2, main multi-way valve 3, secondary multi-way valve 4, big forearm pilot valve 5, guide's switching valve 6, is crushed
Hammer pilot valve 7 into shape, wherein big forearm pilot valve 5 includes large arm pilot valve 51 and forearm pilot valve 52, guide's switching valve 6 includes first
Guide's switching valve 61 and second guide's switching valve 62, secondary multi-way valve 4 include the first secondary multi-way valve 41 and the second secondary multi-way valve 42.It is main
Pump 1 includes the first main pump 11, the second main pump 12, and the first main pump 11 passes through the second quartering hammer valve 31 of main multi-way valve 3, large arm respectively
Valve 33 is connect with quartering hammer 71, big arm cylinder 331, the first main pump 1 by the first quartering hammer valve 31 to 71 fuel feeding of quartering hammer, pass through
Large arm valve 33 gives 331 fuel feeding of big arm cylinder.Second main pump 12 passes through the second quartering hammer valve 32, the forearm valve of main multi-way valve 3 respectively
34 connect with quartering hammer 71, oil cylinder of small arm 341, the second main pump 12 by the second quartering hammer valve 32 to 71 fuel feeding of quartering hammer, pass through
Forearm valve 34 gives 341 fuel feeding of oil cylinder of small arm.Auxiliary pump 2 is connect with oil cylinder of small arm 341 by the first secondary multi-way valve 41, is secondary by second
Multi-way valve 42 is connect with big arm cylinder 331.First quartering hammer valve 31, the second quartering hammer valve 32, large arm valve 33, forearm valve 34,
One guide's switching valve 61, the second secondary multi-way valve 42 of the 62, first secondary multi-way valve 41, second of guide's switching valve are equipped with bypass spool and change
Position oil inlet.The bypass spool transposition oil inlet that large arm pilot valve 51 passes through the oil outlet and large arm valve 33 of first guide's switching valve 61
Mouth connection, for controlling the open/close of large arm valve 33；Large arm pilot valve 51 also and the bypass spool of the second secondary multi-way valve 42 replace into
Hydraulic fluid port connection, for controlling the open/close of the second secondary multi-way valve 42.Forearm pilot valve 52 is fuel-displaced by second guide's switching valve 62
Mouth is connect with the bypass spool of forearm valve 34 transposition oil inlet, for controlling the open/close of forearm valve；Forearm pilot valve is also with first
The bypass spool transposition oil inlet connection of secondary multi-way valve 41, for controlling the open/close of the first secondary multi-way valve 41.Quartering hammer pilot valve
7 connect with the bypass spool of the first quartering hammer valve 31, the second quartering hammer valve 32, guide's switching valve 6 transposition oil inlet, for controlling
First quartering hammer valve 31, the second quartering hammer valve 32, guide's switching valve 6 open/close.
Referring to shown in Fig. 3, quartering hammer 71 does not work.Black dotted line is the route that guide oil controls pilot valve, based on black solid line
Pump, auxiliary pump are to the control route of forearm valve, large arm valve and quartering hammer valve.Quartering hammer pilot valve 7 is done nothing, first
31 closed state of quartering hammer valve 32 and the second quartering hammer valve, then at this moment 6 spool of guide's switching valve is in Self-resetting state, guide
(not indicating in figure) is pumped to big 5 fuel feeding of forearm pilot valve, the guide oil of big forearm pilot valve 5 is right simultaneously by guide's switching valve 6
Large arm valve 33, forearm valve 34 are controlled, while also being controlled secondary multi-way valve 4, so that it is corresponded to valve block spool and are opened, at this time
Main pump 1 and auxiliary pump 2 are by large arm valve 33, forearm valve 34 and the secondary difference of multi-way valve 4 pressure oil output, after piping connection is collaborated
It is supplied to oil cylinder of small arm 341 and big arm cylinder 331, completes big forearm movement.Since main multi-way valve 3 provides pressure oil by main pump 1,
Secondary multi-way valve 4 provides pressure oil by auxiliary pump 2, so when the movement of big forearm by the fuel feeding execution simultaneously of main pump and auxiliary pump.
Referring to shown in Fig. 4, quartering hammer 71 works.Black dotted line be guide oil control pilot valve route, black solid line be main pump,
Control route of the auxiliary pump to forearm valve, large arm valve and quartering hammer valve.Quartering hammer pilot valve 7 is operated, then quartering hammer
Pilot valve 7 exports the first quartering hammer valve 31 and the second quartering hammer valve 32 that guide oil controls main multi-way valve 3, the first quartering hammer valve 31
It is in the open state with the second quartering hammer valve 32, make main pump 1 to 71 fuel feeding of quartering hammer, quartering hammer 71 is started to work, and at this time
Quartering hammer pilot valve 7 is also while controlling guide's switching valve 6 makes its spool commutate, and closes spool, since guide's switching valve 6 carries out
Switching state, then guide oil passes through guide's switching valve when pioneer pump (not indicating in figure) is big 5 fuel feeding of forearm pilot valve at this time
6 individually control secondary multi-way valve 4, open its spool, no longer control large arm valve 33, the forearm valve 34 in main multi-way valve 3, at this time
Large arm valve 33, forearm valve 34 are in close state, and auxiliary pump 2 passes through the secondary offer of multi-way valve 4 pressure oil at this time, are given by piping connection
331 fuel feeding of oil cylinder of small arm 341 and big arm cylinder completes the movement of big forearm, since main pump no longer controls main multi-way valve 3, therefore main pump 1
Be not involved in the fuel feeding of oil cylinder of small arm 341 and big arm cylinder 331, under this working condition, main pump 1 to 71 quartering hammers for pressure oil,
Auxiliary pump 2 are given 331 fuel feeding of oil cylinder of small arm 341 and big arm cylinder.
It referring to Figure 5, is automatic lubricating system.Compressor 75 is that engine is included, when the engine runs, compression
Machine 75 start to work, will by air intake filter 76 suck the filtered cleaned air of normality, air intake filter 76 ensure into
The cleannes of gas avoid compressor 75 from sucking dirtier air and cause to damage, and compressor 75 exports 6bar compressed gas, and is pressing
Contracting gas outlet is mounted with unloading valve 74, and pressure unloading 8bar is arranged in unloading valve 74, when compression pressure is more than in system
When 8bar by automatic evacuated air into atmosphere, compressed gas generates excessively high pressure and causes the damage of components in anti-locking system
Bad, then compressed gas is connect by pressure pipe with 73 import of gas-water separation mouth, and moisture trap 73 is automatically separated out compressed gas
The reason of moisture content in body, and the compressed gas dry in exit output, removal 75 moisture content of compressor is to prevent moisture content from entering
Quartering hammer 71, causes quartering hammer internal corrosion, and internal corrosion will badly damaged quartering hammer.The outlet of moisture trap 73 is direct
It is connected with 72 import of oil fog generator, the drying compressed gas that moisture trap 73 exports enters oil fog generator 72, mist of oil hair
It is added with clean hydraulic oil in raw device 72, hydraulic oil and compressed gas generate the gas of air-fuel mixture, and from oil fog generator
72 outlet outputs, the outlet of oil fog generator 72 are connected to 71 lubricating oil inlet of quartering hammer, air-fuel mixture gas by pressure hose
It is entered in quartering hammer 71 by quartering hammer lubricating oil inlet, lubricating action is played to hammer stem and protheca, thus no longer needed to every
Quartering hammer filling butter was lubricated in two hours, eliminates the work for frequently filling butter to quartering hammer, improve equipment
Working efficiency, preferably play a protective role to quartering hammer.
Finally, it should be noted that those skilled in the art various changes and modifications can be made to the invention without departing from
The spirit and scope of the present invention.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its waits system
Within the scope of counting, then the present invention is also intended to encompass these modification and variations.
Claims (10)
1. a kind of hydraulic machine that cuts into a mountain, including quartering hammer, working forearm, working large arm, driver's cabin, rotating platform of getting on the bus, lower body,
It is characterized in that, further include flow-compensated system and self lubricating system,
The flow-compensated system includes oil cylinder of small arm, big arm cylinder and the hydraulic machine hydraulic system that cuts into a mountain, the oil cylinder of small arm control
Make the movement of the working forearm, the movement of the big arm cylinder control working large arm, the hydraulic machine hydraulic system packet that cuts into a mountain
Include main pump, auxiliary pump, main multi-way valve, secondary multi-way valve, big forearm pilot valve, guide's switching valve, quartering hammer pilot valve, the main pump packet
The first main pump, the second main pump are included, first main pump passes through the first quartering hammer valve, large arm valve and the institute of the main multi-way valve respectively
State quartering hammer, big arm cylinder connection, second main pump pass through respectively the second quartering hammer valve of the main multi-way valve, forearm valve with
The quartering hammer, oil cylinder of small arm connection, the auxiliary pump are connect by the secondary multi-way valve with the oil cylinder of small arm, big arm cylinder,
The big forearm pilot valve is connect by guide's switching valve with the large arm valve, forearm valve, and the big forearm pilot valve is also
It is connected with the secondary multi-way valve, the quartering hammer pilot valve and the first quartering hammer valve, the second quartering hammer valve, guide's switching valve
Connection,
The self lubricating system is connect with the quartering hammer, including passes through the sequentially connected compressor of pressure hose, gas-water separation
The outlet of device, oil fog generator, the oil fog generator is connect with the lubricating oil inlet of the quartering hammer.
2. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that access air inlet in the entrance of the compressor
Filter avoids compressor from sucking dirtier air and causes to damage for ensuring the cleannes of air inlet.
3. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that in the compressor and the gas-water separation
It is provided with unloading valve between device, generate excessively high pressure for compressed gas in anti-locking system and causes the damage of components.
4. the hydraulic machine that cuts into a mountain of one kind according to claim 3, which is characterized in that the compressed gas of the compressor output 6bar
Body, the pressure of the unloading valve off-load are 8bar.
5. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that the first quartering hammer valve, second are crushed
Hammer valve, large arm valve, forearm valve, guide's switching valve, secondary multi-way valve are equipped with bypass spool transposition oil inlet, broken for controlling first
Broken hammer valve, the second quartering hammer valve, large arm valve, forearm valve, guide's switching valve, the open/close of secondary multi-way valve.
6. the hydraulic machine that cuts into a mountain of one kind according to claim 5, which is characterized in that the big forearm pilot valve passes through the elder generation
The oil outlet for leading switching valve is connect with the bypass spool of the large arm valve and forearm valve transposition oil inlet respectively, the size
Arm pilot valve is also connected with the bypass spool transposition oil inlet of the secondary multi-way valve, and the quartering hammer pilot valve is broken with described first
The bypass spool transposition oil inlet connection of broken hammer valve, the second quartering hammer valve and guide's switching valve.
7. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that the pair multi-way valve includes the first secondary multichannel
Valve and the second secondary multi-way valve, the auxiliary pump is connect by the described first secondary multi-way valve with the oil cylinder of small arm and forearm valve, described
Auxiliary pump is connect by the described second secondary multi-way valve with the big arm cylinder and large arm valve.
8. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that the big forearm pilot valve includes large arm elder generation
Pilot valve and forearm pilot valve, guide's switching valve include first guide's switching valve and second guide's switching valve；The large arm is first
Pilot valve is connect with the oil inlet of the first guide switching valve, the oil inlet of the forearm pilot valve and the second guide switching valve
Mouth connection.
9. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that described broken when the quartering hammer does not work
Broken hammer pilot valve controls the first quartering hammer valve, the second quartering hammer valve is closed, and the spool of guide's switching valve is in runback
Position state, the big forearm pilot valve control the large arm valve, forearm valve by guide's switching valve, and control the secondary multichannel
Valve opens the spool of the large arm valve, forearm valve, secondary multi-way valve, and the main pump and auxiliary pump pass through large arm valve, forearm valve and pair
Multi-way valve distinguishes pressure oil output, and the oil cylinder of small arm and big arm cylinder are supplied to after piping connection is collaborated, and completes size
Arm movement.
10. the hydraulic machine that cuts into a mountain of one kind according to claim 1, which is characterized in that described broken when the quartering hammer works
It hammers pilot valve into shape and controls the first quartering hammer valve, the second quartering hammer valve opening, and control guide's switching valve and close spool,
The big forearm pilot valve is caused not can control the large arm valve, forearm valve opening, the large arm valve, forearm valve, which are in, closes shape
State, the auxiliary pump provide pressure oil by the secondary multi-way valve, supply by piping connection to the oil cylinder of small arm and big arm cylinder
Oil completes big forearm movement；The main pump provides pressure oil by the first quartering hammer valve and the second quartering hammer valve, by pipe
Road is connected to the quartering hammer fuel feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326982.8A CN109296023B (en) | 2018-11-08 | 2018-11-08 | Hydraulic mountain-digging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326982.8A CN109296023B (en) | 2018-11-08 | 2018-11-08 | Hydraulic mountain-digging machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109296023A true CN109296023A (en) | 2019-02-01 |
| CN109296023B CN109296023B (en) | 2021-03-12 |
Family
ID=65145068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811326982.8A Active CN109296023B (en) | 2018-11-08 | 2018-11-08 | Hydraulic mountain-digging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109296023B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021993A1 (en) * | 2020-07-25 | 2022-02-03 | 何泽康 | Breaking hammer having single-shaft supporting and guiding effects |
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| RU2398076C1 (en) * | 2009-07-13 | 2010-08-27 | Открытое акционерное общество "Уральское конструкторское бюро транспортного машиностроения" | Hydraulic system of wheel excavator |
| CN202023214U (en) * | 2011-04-29 | 2011-11-02 | 烟台艾迪精密机械有限公司 | Self-lubricating hydraulic breaking hammer |
| KR20120074778A (en) * | 2010-12-28 | 2012-07-06 | 두산모트롤주식회사 | Flow controll device for axial piston pump with emergency device |
| CN202882751U (en) * | 2012-11-16 | 2013-04-17 | 湖南江麓重工科技有限公司 | Improved rock drill hydraulic system based on excavator hydraulic system |
| WO2015108216A1 (en) * | 2014-01-17 | 2015-07-23 | 볼보 컨스트럭션 이큅먼트 에이비 | Drive control apparatus for construction machine |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2398076C1 (en) * | 2009-07-13 | 2010-08-27 | Открытое акционерное общество "Уральское конструкторское бюро транспортного машиностроения" | Hydraulic system of wheel excavator |
| KR20120074778A (en) * | 2010-12-28 | 2012-07-06 | 두산모트롤주식회사 | Flow controll device for axial piston pump with emergency device |
| CN202023214U (en) * | 2011-04-29 | 2011-11-02 | 烟台艾迪精密机械有限公司 | Self-lubricating hydraulic breaking hammer |
| CN202882751U (en) * | 2012-11-16 | 2013-04-17 | 湖南江麓重工科技有限公司 | Improved rock drill hydraulic system based on excavator hydraulic system |
| WO2015108216A1 (en) * | 2014-01-17 | 2015-07-23 | 볼보 컨스트럭션 이큅먼트 에이비 | Drive control apparatus for construction machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022021993A1 (en) * | 2020-07-25 | 2022-02-03 | 何泽康 | Breaking hammer having single-shaft supporting and guiding effects |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109296023B (en) | 2021-03-12 |
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