CN109989436A - A kind of excavator ejector dozer - Google Patents
A kind of excavator ejector dozer Download PDFInfo
- Publication number
- CN109989436A CN109989436A CN201910369434.1A CN201910369434A CN109989436A CN 109989436 A CN109989436 A CN 109989436A CN 201910369434 A CN201910369434 A CN 201910369434A CN 109989436 A CN109989436 A CN 109989436A
- Authority
- CN
- China
- Prior art keywords
- ejector dozer
- excavator
- dozer
- component
- auxiliary oil
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8155—Blades; Levelling or scarifying tools provided with movable parts, e.g. cutting discs, vibrating teeth or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
A kind of excavator ejector dozer, including ejector dozer component, ejector dozer component include main ejector dozer and secondary ejector dozer, and secondary ejector dozer is installed on the two sides of main ejector dozer by sliding slot；The intermediate position of ejector dozer component is connected with the mounting bracket of front of digging machine, and ejector dozer component is connect by master cylinder and auxiliary oil cylinder with excavator mounting bracket, and master cylinder is connect with main ejector dozer, and auxiliary oil cylinder is connect with secondary ejector dozer.The present invention is using main ejector dozer and secondary ejector dozer, main ejector dozer is connected with master cylinder, secondary ejector dozer is connected with auxiliary oil cylinder, master cylinder can adjust the height of ejector dozer, auxiliary oil cylinder can adjust the angle of ejector dozer deflection, during auxiliary oil cylinder deflection, secondary ejector dozer can relatively main ejector dozer slide in and out, extend the overall length of ejector dozer component, guarantee that the active width of ejector dozer component will not be shortened excessively, and the soil and stone that the deflection of ejector dozer can make front reduce excavator load to a Slideslip of ejector dozer.
Description
Technical field
The present invention relates to excavator structure field, more specifically to a kind of excavator ejector dozer.
Background technique
Excavator becomes the king of engineering machinery, is widely used in various occasions, including various bad working environments.For just
It being in for the China of Urbanization Progress acceleration, infrastructure construction like a raging fire has expedited the emergence of the demand to excavator,
The kind and the scope of application of excavator are more and more extensive.Ejector dozer is that excavator uses very frequent device, not only to bulldoze,
And it can also be used to smooth location.Ejector dozer is mounted on the front end of vehicle frame by connecting rod, and makes ejector dozer by hydraulic cylinder
It rises or falls.
Notification number is that the patent of CN208121840U discloses a kind of dozer of excavator, by telescoping mechanism and is pushed away
The setting of native plate, telescoping mechanism send out ejector dozer from the slippage slot of dozer ontology, and making to bulldoze partially becomes dozer and push away
Native plate is added the region to be formed, to increase the soil shifting area of dozer ontology, to improve the smooth speed of excavator, mentions
High smooth efficiency.Although the patent can increase the soil shifting area of ejector dozer, work as ejector dozer soil shifting area toward side
The load of ejector dozer also becomes larger after increase, when encountering stone biggish compared with multimass, before excavator pushes always very heavy load
Into when energy consumption it is larger, and may be damaged soil-shifting board connecting structure.
Summary of the invention
The present invention provides a kind of excavator ejector dozer, excavator ejector dozer of the invention in view of the deficiencies of the prior art
Using main ejector dozer and secondary ejector dozer, main ejector dozer is connected with master cylinder, and secondary ejector dozer is connected with auxiliary oil cylinder, and master cylinder can be adjusted
The height of ejector dozer is saved, auxiliary oil cylinder can adjust the angle of ejector dozer deflection, during auxiliary oil cylinder deflection, secondary ejector dozer energy
Enough relatively main ejector dozers slide in and out, and extend the overall length of ejector dozer component, guarantee that the active width of ejector dozer component will not
Excessively shorten, and it is negative to reduce excavator to a Slideslip of ejector dozer for soil and stone that the deflection of ejector dozer can make front
It carries, improves excavator operation efficiency.
The specific technical solution of the present invention is as follows: a kind of excavator ejector dozer, including ejector dozer component, the soil-shifting board group
Part includes main ejector dozer and secondary ejector dozer, and the pair ejector dozer is installed on the two sides of the main ejector dozer by sliding slot；It is described to push away
The intermediate position of native board group part is connected with the mounting bracket of front of digging machine, and the ejector dozer component passes through master cylinder and pair oil
Cylinder is connect with mounting bracket described in excavator, and the master cylinder is connect with the main ejector dozer, and the auxiliary oil cylinder is pushed away with the pair
Native plate connection.
The master cylinder can adjust the height of the ejector dozer component as a result, and the auxiliary oil cylinder can adjust described push away
The angle of native board group part deflection, during auxiliary oil cylinder deflection, the pair ejector dozer being capable of the relatively described main ejector dozer
It slides in and out, extends the overall length of the ejector dozer component, guarantee that the active width of the ejector dozer component will not excessively subtract
It is short.
As a preference of the present invention, being connected between rear and the mounting bracket by connection frame among the main ejector dozer
It connects, it is vertical hinged between the connection frame and the main ejector dozer, it is laterally hinged between the connection frame and the mounting bracket.
The ejector dozer component can be rotated relative to the connection frame as a result, realizes deflection, and the connection frame being capable of phase
The mounting bracket, which is rotated up and down, drives the ejector dozer component to move up and down adjustment terrain clearance.
As a preference of the present invention, the master cylinder installation site is located above the connection frame, the master cylinder is double
Piston cylinder is acted on, and is transversely mounted seat by first between the mounting bracket and is laterally hinged with, between the main ejector dozer
It is laterally hinged with by transition attachment base, and vertical hinged between the transition attachment base and the mounting bracket.
The master cylinder and the connection frame, the mounting bracket, the main ejector dozer surround four in vertical direction as a result,
Side shape can be realized the adjusting of the ejector dozer component terrain clearance by the expanding-contracting action of the master cylinder；The transition connects
It is vertical vertical hinged between hinged axle center and the connection frame and the main ejector dozer between joint chair and the mounting bracket
Axle center is conllinear, can guarantee that the ejector dozer component normally deflects.
As a preference of the present invention, the auxiliary oil cylinder is single-action plunger piston cylinder, and by the between the mounting bracket
Two, which are transversely mounted seat, is laterally hinged with, vertical hinged between the secondary ejector dozer.
When the ejector dozer component needs to deflect as a result, the auxiliary oil cylinder of side plays pressure, the auxiliary oil cylinder of the other side
Pressure release is just able to achieve to the auxiliary oil cylinder direction of pressure release side and deflects.
As a preference of the present invention, two oil inlets of the master cylinder are connected to hydraulic valve, the hydraulic valve by oil pipe
Including at least the dual hydraulic control one-way valve for acting on two oil inlets of master cylinder.
Dual hydraulic control one-way valve, that is, the bidirectional hydraulic lock as a result, enables to described in the master cylinder expanding-contracting action control
State of pressure keeping is kept after the lifting of ejector dozer component, the power that the hydraulic valve cancellation is input to the master cylinder can also keep institute
State the state of ejector dozer component.
As a preference of the present invention, the oil inlet of the auxiliary oil cylinder is connected to hydraulic valve by oil pipe, the hydraulic valve is at least
Hydraulic control one-way valve including acting on the auxiliary oil cylinder oil inlet.
The hydraulic control one-way valve can guarantee to keep state of pressure keeping after the auxiliary oil cylinder stretches out as a result, in the ejector dozer
Component can also be kept under normotopia state or deflection state even if the power that hydraulic valve cancellation is input to the auxiliary oil cylinder
The state of the ejector dozer component.
As a preference of the present invention, the oil inlet of the auxiliary oil cylinder is connected to hydraulic valve by oil pipe, the hydraulic valve is also wrapped
Adjustable relief valve is included, and two auxiliary oil cylinders are controlled by the same adjustable relief valve.
Two auxiliary oil cylinder pressure keep the same as a result, described when having in front of the ejector dozer component compared with boulder
Ejector dozer component can adaptively deflect adjustment, and the pressure of the auxiliary oil cylinder can volume according to soil containing stone and
Quantity is adjusted by the pressure adjusting to the adjustable relief valve.
As a preference of the present invention, the adjustable relief valve is pilot operated compound relief valve, and pilot valve extends peace by oil pipe
Loaded in excavator driving cabin.
The adjustable relief valve can be adjusted by the adjusting for the pilot valve being mounted in cockpit as a result,
It is more convenient.
In conclusion the invention has the following advantages:
Excavator ejector dozer of the invention is connected using main ejector dozer and secondary ejector dozer, main ejector dozer with master cylinder, secondary ejector dozer
It is connected with auxiliary oil cylinder, master cylinder can adjust the height of ejector dozer, and auxiliary oil cylinder can adjust the angle of ejector dozer deflection, in secondary oil
Cylinder deflect during, secondary ejector dozer can relatively main ejector dozer slide in and out, extend ejector dozer component overall length, guarantee
The active width of ejector dozer component will not be shortened excessively, and soil and stone that the deflection of ejector dozer can make front are to ejector dozer
A Slideslip, reduce excavator load, improve excavator operation efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of excavator ejector dozer normotopia state of the present invention；
Fig. 2 is the schematic diagram of excavator ejector dozer of the present invention deflection state to the left；
In figure, 1- ejector dozer component, the main ejector dozer of 11-, 12- pair ejector dozer, 2- master cylinder, 3- auxiliary oil cylinder, 4- mounting bracket,
41- first is transversely mounted seat, 42- second and is transversely mounted seat, 5- connection frame, 6- transition attachment base.
Specific embodiment
Below in conjunction with attached drawing, by specific embodiment, the invention will be further described.
As shown in Figure 1, Figure 2, a kind of excavator ejector dozer, including ejector dozer component 1, ejector dozer component 1 include main ejector dozer 11
With secondary ejector dozer 12, secondary ejector dozer 12 is installed on the two sides of main ejector dozer 11 by sliding slot；The intermediate position of ejector dozer component 1 and
The mounting bracket 4 of front of digging machine connects, and ejector dozer component 1 passes through master cylinder 2 and auxiliary oil cylinder 3 and excavator mounting bracket 4
Connection, master cylinder 2 are connect with main ejector dozer 11, and auxiliary oil cylinder 3 is connect with secondary ejector dozer 12.
Master cylinder 2 can adjust the height of ejector dozer component 1 as a result, and auxiliary oil cylinder 3 can adjust the deflection of ejector dozer component 1
Angle, auxiliary oil cylinder 3 deflect during, secondary ejector dozer 12 can relatively main ejector dozer 11 slide in and out, extend ejector dozer
The overall length of component 1 guarantees that the active width of ejector dozer component 1 will not be shortened excessively.
As shown in Figure 1, Figure 2, connected between the intermediate rear of main ejector dozer 11 and mounting bracket 4 by connection frame 5, connection frame 5 with
It is vertical hinged between main ejector dozer 11, it is laterally hinged between connection frame 5 and mounting bracket 4.
Ejector dozer component 1 can be rotated relative to connection frame 5 as a result, realizes deflection, and connection frame 5 can be relative to installation branch
Frame 4, which is rotated up and down, drives ejector dozer component 1 to move up and down adjustment terrain clearance.
As shown in Figure 1, Figure 2,2 installation site of master cylinder is located at the top of connection frame 5, and master cylinder 2 is two-way ram cylinder, and with peace
Seat 41 is transversely mounted by first between dress bracket 4 to be laterally hinged with, and is laterally cut with scissors between main ejector dozer 11 by transition attachment base 6
It connects, and vertical hinged between transition attachment base 6 and mounting bracket 4.
Master cylinder 2 and connection frame 5, mounting bracket 4, main ejector dozer 11 surround quadrangle in vertical direction as a result, pass through master
The expanding-contracting action of oil cylinder 2 can be realized the adjusting of 1 terrain clearance of ejector dozer component；It is erected between transition attachment base 6 and mounting bracket 4
It is conllinear to hinged axle center vertical between hinged axle center and connection frame 5 and main ejector dozer 11, it can guarantee ejector dozer component 1 just
Often deflection.
As shown in Figure 1, Figure 2, auxiliary oil cylinder 3 is single-action plunger piston cylinder, and is transversely mounted seat 42 by second between mounting bracket 4
It is laterally hinged with, it is vertical hinged between secondary ejector dozer 12.
When ejector dozer component 1 needs to deflect as a result, the auxiliary oil cylinder 3 of side plays pressure, and 3 pressure release of auxiliary oil cylinder of the other side just can
It realizes and is deflected to 3 direction of auxiliary oil cylinder of pressure release side.
Two oil inlets of master cylinder 2 are connected to hydraulic valve by oil pipe, and hydraulic valve includes at least and acts on master cylinder 2 two
The dual hydraulic control one-way valve of oil inlet.
Dual hydraulic control one-way valve, that is, bidirectional hydraulic lock as a result, enables to 2 expanding-contracting action of master cylinder to control ejector dozer component 1
State of pressure keeping is kept after lifting, the power that hydraulic valve cancellation is input to master cylinder 2 can also keep the state of ejector dozer component 1.
The oil inlet of auxiliary oil cylinder 3 is connected to hydraulic valve by oil pipe, and hydraulic valve includes at least and acts on 3 oil inlet of auxiliary oil cylinder
Hydraulic control one-way valve.
Hydraulic control one-way valve can guarantee to keep state of pressure keeping after auxiliary oil cylinder 3 stretches out as a result, in ejector dozer component 1 in normotopia
The state of ejector dozer component 1 can also be kept even if the power that hydraulic valve cancellation is input to auxiliary oil cylinder 3 under state or deflection state.
The oil inlet of auxiliary oil cylinder 3 is connected to hydraulic valve by oil pipe, and hydraulic valve further includes adjustable relief valve, and two auxiliary oil cylinders
3 are controlled by the same adjustable relief valve.
Two 3 pressure of auxiliary oil cylinder keep the same as a result, when having in front of ejector dozer component 1 compared with boulder, ejector dozer component
1 can adaptively deflect adjustment, and the pressure of auxiliary oil cylinder 3 can volume according to soil containing stone and quantity by can
The pressure adjusting of overflow valve is adjusted to be adjusted.
Adjustable relief valve is pilot operated compound relief valve, and pilot valve is installed in excavator driving cabin by oil pipe extension.
Adjustable relief valve can be adjusted by the adjusting for the pilot valve being mounted in cockpit as a result, more convenient
Fast.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to design of the invention
It is defined with range.Without departing from the design concept of the invention, ordinary people in the field is to technical side of the invention
The all variations and modifications that case is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
Through being all described in the claims.
Claims (8)
1. a kind of excavator ejector dozer, it is characterised in that: including ejector dozer component (1), the ejector dozer component (1) includes featured
Native plate (11) and secondary ejector dozer (12), the pair ejector dozer (12) are installed on the two sides of the main ejector dozer (11) by sliding slot；
The intermediate position of the ejector dozer component (1) and mounting bracket (4) connection of front of digging machine, and the ejector dozer component (1)
It is connect by master cylinder (2) and auxiliary oil cylinder (3) with mounting bracket described in excavator (4), the master cylinder (2) and the featured soil
Plate (11) connection, the auxiliary oil cylinder (3) connect with the secondary ejector dozer (12).
2. a kind of excavator ejector dozer according to claim 1, it is characterised in that: the intermediate rear of main ejector dozer (11)
It is connected between the mounting bracket (4) by connection frame (5), is erected between the connection frame (5) and the main ejector dozer (11)
To hinged, it is laterally hinged between the connection frame (5) and the mounting bracket (4).
3. a kind of excavator ejector dozer according to claim 2, it is characterised in that: master cylinder (2) the installation position set
Above the connection frame (5), the master cylinder (2) is two-way ram cylinder, and by the between the mounting bracket (4)
One, which is transversely mounted seat (41), is laterally hinged with, and is laterally hinged between the main ejector dozer (11) by transition attachment base (6), and institute
It states vertical hinged between transition attachment base (6) and the mounting bracket (4).
4. a kind of excavator ejector dozer according to claim 3, it is characterised in that: the auxiliary oil cylinder (3) is single-acting column
Plug cylinder, and be transversely mounted seat (42) by second between the mounting bracket (4) and be laterally hinged with, with the secondary ejector dozer (12)
Between it is vertical hinged.
5. a kind of excavator ejector dozer according to claim 4, it is characterised in that: two oil inlets of the master cylinder (2)
Mouth is connected to hydraulic valve by oil pipe, and the hydraulic valve includes at least the double hydraulic control for acting on (2) two oil inlets of master cylinder
Check valve.
6. a kind of excavator ejector dozer according to claim 4, it is characterised in that: the oil inlet of the auxiliary oil cylinder (3) by
Oil pipe is connected to hydraulic valve, and the hydraulic valve includes at least the hydraulic control one-way valve for acting on the auxiliary oil cylinder (3) oil inlet.
7. a kind of excavator ejector dozer according to claim 6, it is characterised in that: the oil inlet of the auxiliary oil cylinder (3) by
Oil pipe is connected to hydraulic valve, and the hydraulic valve further includes adjustable relief valve, and two auxiliary oil cylinders (3) by it is same it is described can
Adjust overflow valve control.
8. a kind of excavator ejector dozer according to claim 7, it is characterised in that: the adjustable relief valve overflows for pilot-operated type
Valve is flowed, and pilot valve is installed in excavator driving cabin by oil pipe extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369434.1A CN109989436B (en) | 2019-05-06 | 2019-05-06 | Bulldozer blade of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369434.1A CN109989436B (en) | 2019-05-06 | 2019-05-06 | Bulldozer blade of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109989436A true CN109989436A (en) | 2019-07-09 |
| CN109989436B CN109989436B (en) | 2023-10-10 |
Family
ID=67135966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910369434.1A Active CN109989436B (en) | 2019-05-06 | 2019-05-06 | Bulldozer blade of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109989436B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064703A (en) * | 2020-09-15 | 2020-12-11 | 方平 | Free adjusting device of excavator dozer blade |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5581940A (en) * | 1978-12-12 | 1980-06-20 | Beales Steel Prod | Scraper tool mounting assembly |
| JPH08296251A (en) * | 1995-04-27 | 1996-11-12 | Kubota Corp | Working vehicle with dozer |
| JPH09256408A (en) * | 1996-03-22 | 1997-09-30 | Mitsubishi Agricult Mach Co Ltd | Operation device for bladed work machine |
| JPH10195917A (en) * | 1997-01-16 | 1998-07-28 | Hitachi Constr Mach Co Ltd | Operation vehicle with earth removing device |
| JPH11280118A (en) * | 1998-03-30 | 1999-10-12 | Shin Caterpillar Mitsubishi Ltd | Small-sized hydraulic back hoe |
| JP2005073642A (en) * | 2003-09-02 | 2005-03-24 | Hideaki Watanabe | Ridging unit |
| DE102006004207A1 (en) * | 2006-01-30 | 2007-08-09 | Lanz Baumaschinen Gmbh | Arm e.g. base arm for excavator e.g. mini excavator, has main part and two side pieces are connected with main part where each of two side parts has fastening element, with which arm is connected with excavator |
| US20080173456A1 (en) * | 2006-12-20 | 2008-07-24 | Davis John L | Curb shoe assembly for shoulder grading |
| KR20100010588A (en) * | 2008-07-23 | 2010-02-02 | 주식회사 세웅 | Coupling device of excavator for tractor |
| CN202064381U (en) * | 2011-04-21 | 2011-12-07 | 山河智能装备股份有限公司 | Bulldozing shovel changing device |
| CN202565682U (en) * | 2012-05-10 | 2012-12-05 | 三一重工股份有限公司 | Land leveler and adjustable bulldozing plate thereof |
| CN203977478U (en) * | 2014-07-23 | 2014-12-03 | 斗山工程机械（中国）有限公司 | A kind of dozer assembly and excavator |
| CN204282425U (en) * | 2014-12-09 | 2015-04-22 | 斗山工程机械（中国）有限公司 | A kind of dozer assembly and excavator |
| CN107288167A (en) * | 2016-03-31 | 2017-10-24 | 日立建机株式会社 | Engineering machinery |
| CN208121840U (en) * | 2018-04-12 | 2018-11-20 | 四川瑞通工程建设集团有限公司 | A kind of dozer of excavator |
| CN210342047U (en) * | 2019-05-06 | 2020-04-17 | 浙江顺得机械有限公司 | Bulldozing plate of excavator |
-
2019
- 2019-05-06 CN CN201910369434.1A patent/CN109989436B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5581940A (en) * | 1978-12-12 | 1980-06-20 | Beales Steel Prod | Scraper tool mounting assembly |
| JPH08296251A (en) * | 1995-04-27 | 1996-11-12 | Kubota Corp | Working vehicle with dozer |
| JPH09256408A (en) * | 1996-03-22 | 1997-09-30 | Mitsubishi Agricult Mach Co Ltd | Operation device for bladed work machine |
| JPH10195917A (en) * | 1997-01-16 | 1998-07-28 | Hitachi Constr Mach Co Ltd | Operation vehicle with earth removing device |
| JPH11280118A (en) * | 1998-03-30 | 1999-10-12 | Shin Caterpillar Mitsubishi Ltd | Small-sized hydraulic back hoe |
| JP2005073642A (en) * | 2003-09-02 | 2005-03-24 | Hideaki Watanabe | Ridging unit |
| DE102006004207A1 (en) * | 2006-01-30 | 2007-08-09 | Lanz Baumaschinen Gmbh | Arm e.g. base arm for excavator e.g. mini excavator, has main part and two side pieces are connected with main part where each of two side parts has fastening element, with which arm is connected with excavator |
| US20080173456A1 (en) * | 2006-12-20 | 2008-07-24 | Davis John L | Curb shoe assembly for shoulder grading |
| KR20100010588A (en) * | 2008-07-23 | 2010-02-02 | 주식회사 세웅 | Coupling device of excavator for tractor |
| CN202064381U (en) * | 2011-04-21 | 2011-12-07 | 山河智能装备股份有限公司 | Bulldozing shovel changing device |
| CN202565682U (en) * | 2012-05-10 | 2012-12-05 | 三一重工股份有限公司 | Land leveler and adjustable bulldozing plate thereof |
| CN203977478U (en) * | 2014-07-23 | 2014-12-03 | 斗山工程机械（中国）有限公司 | A kind of dozer assembly and excavator |
| CN204282425U (en) * | 2014-12-09 | 2015-04-22 | 斗山工程机械（中国）有限公司 | A kind of dozer assembly and excavator |
| CN107288167A (en) * | 2016-03-31 | 2017-10-24 | 日立建机株式会社 | Engineering machinery |
| CN208121840U (en) * | 2018-04-12 | 2018-11-20 | 四川瑞通工程建设集团有限公司 | A kind of dozer of excavator |
| CN210342047U (en) * | 2019-05-06 | 2020-04-17 | 浙江顺得机械有限公司 | Bulldozing plate of excavator |
Non-Patent Citations (1)
| Title |
|---|
| 郎宝贤: "推土机推土装置的调整", 工程机械, no. 11 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064703A (en) * | 2020-09-15 | 2020-12-11 | 方平 | Free adjusting device of excavator dozer blade |
| CN112064703B (en) * | 2020-09-15 | 2022-09-13 | 山东德奇力机械有限公司 | Free adjusting device of excavator dozer blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109989436B (en) | 2023-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140090369A1 (en) | Hydraulic Drive Device for Working Machine | |
| JP5369030B2 (en) | Hydraulic circuit of work vehicle | |
| US4382485A (en) | Hydraulic logic control for variable displacement pump | |
| JP3162384B2 (en) | Hydraulic devices for working machines with working devices | |
| CN105386478A (en) | Excavator and movable arm potential energy recycling system thereof | |
| US20100122528A1 (en) | Hydraulic system having regeneration and supplemental flow | |
| CN109989436A (en) | A kind of excavator ejector dozer | |
| US8966892B2 (en) | Meterless hydraulic system having restricted primary makeup | |
| CN210342047U (en) | Bulldozing plate of excavator | |
| JP2018145984A (en) | Hydraulic transmission for construction machine | |
| FI66466B (en) | ANORDNING FOER ATT BEGRAENSA EN HYDRAULKOLVS HASTIGHET I AENDLAEGENA | |
| JP2554476B2 (en) | Speed-up circuit for hydraulic cylinders such as crushers | |
| JP2014080812A (en) | Hydraulic circuit of work machine | |
| CN109356218B (en) | Distribution valve for loader and loader hydraulic system | |
| CN211082435U (en) | Electro-hydraulic control valve | |
| CN110578726B (en) | Quantitative system variable hydraulic system | |
| EP2438241B1 (en) | Kingpost assembly with hydraulically driven sideshift sliding carriage | |
| US2986166A (en) | Pressure fluid control system | |
| CN217537150U (en) | All-variable hydraulic system and loader | |
| CN106592678B (en) | Crawler-mounted excavator | |
| CN2490349Y (en) | Electric controlled priority auxiliary valve capable of adjusting flow | |
| CN219298298U (en) | Hydraulic system of hydraulic control land leveler | |
| CN110886737A (en) | Electro-hydraulic control valve | |
| CN221195561U (en) | Active-passive combined hydraulic control system and vault pouring system | |
| JP3553186B2 (en) | Hydraulic circuit of telescopic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |