CN102296664B - Hydraulic driving device of excavator - Google Patents
Hydraulic driving device of excavator Download PDFInfo
- Publication number
- CN102296664B CN102296664B CN 201110170092 CN201110170092A CN102296664B CN 102296664 B CN102296664 B CN 102296664B CN 201110170092 CN201110170092 CN 201110170092 CN 201110170092 A CN201110170092 A CN 201110170092A CN 102296664 B CN102296664 B CN 102296664B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- direction valve
- valve
- hydraulic
- joint
- 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.)
- Active
Links
Images
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic driving device of an excavator, belonging to the technical field of hydraulic circuit devices. The hydraulic driving device comprises a control valve, a first direction valve, a second direction valve, a bucket arm cylinder, a hydraulic control one-way valve, an oil tank and a first one-way valve, and also comprises a third direction valve, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a first joint, a second joint and a spring, wherein one end of the first pipeline is connected with the first joint, the other end of the first pipeline is connected with a pilot control port of the third direction valve, one end of the fourth pipeline is connected with the second joint, the other end of the fourth pipeline is connected with a working oil inlet of the third direction valve, one end of the second pipeline is connected with a working oil outlet of the third direction valve, the other end of the second pipeline is connected with the oil tank, one end of the third pipeline is connected with an oil drainage port of a spring cavity of the third direction valve, and the other end of the third pipeline is connected with the oil tank. The invention has the beneficial effect of improving the excavation capacity of a bucket arm of the hydraulic excavator, thereby improving the operation efficiency of the hydraulic excavator and reducing oil consumption.
Description
Technical field
The present invention relates to a kind of hydraulic driving device of excavator, belong to the circuit apparatus for hydraulic technical field.
Background technology
Present medium-and-large-sized excavator hydraulic system all is devoted to efficient, energy-conservation technical research.Be used at present the fluid pressure drive device of medium-sized hydraulic crawler excavator, its defective is: hydraulic crawler excavator is under excavation or severe duty, when the rod chamber inner fluid of bucket arm cylinder is flowed through direction valve, crushing is too high, reduced the output action power when the bucket arm cylinder piston rod stretches out, cause hydraulic excavator bucket lack of cutting force phenomenon, thereby greatly reduce the operating efficiency of hydraulic crawler excavator, and fuel consume is also higher.
Summary of the invention
Problem for above-mentioned prior art exists the invention provides a kind of hydraulic driving device of excavator, solves the phenomenon of excavator boom lack of cutting force.
To achieve these goals, the technical solution used in the present invention is: a kind of hydraulic driving device of excavator comprises control valve, first direction valve, second direction valve, bucket arm cylinder, hydraulic control one-way valve, fuel tank and the first one way valve; A hydraulic fluid port of control valve connects fuel tank, two hydraulic fluid ports are connected in guide's hydraulic fluid port of first direction valve, two actuator ports of first direction valve are rodless cavity and the rod chamber of connection bucket rod oil cylinder respectively, and second direction valve, hydraulic control one-way valve and the first one way valve are arranged in inner oil duct; Also comprise third direction valve, the first pipeline, second pipe, the 3rd pipeline, the 4th pipeline, the first joint, the second joint and spring; The first pipeline one end connects the first joint, the other end connects the pilot control opening of third direction valve, the 4th pipeline one end connects the second joint, the other end connects the work oil-in of third direction valve, second pipe one end connects the work oil-out of third direction valve, the other end connects fuel tank, and the 3rd pipeline one end connects the drain tap in third direction valve spring chamber, and an end connects fuel tank.
Preferably, the commutation controlled pressure of described third direction valve is regulated by rigidity and the decrement of regulating spring.
Preferably, the pressure adjustable range of described third direction valve is 0 to 20MPa.
The invention has the beneficial effects as follows: solved the existing little defective that causes the hydraulic excavator bucket lack of cutting force of output action power when the bucket arm cylinder piston rod stretches out when the heavily loaded operations such as excavation of the fluid pressure drive device of hydraulic crawler excavator; Improve the digging force of hydraulic excavator bucket, thereby improved operating efficiency, the reduction fuel consume of hydraulic crawler excavator.
Description of drawings
Fig. 1 is principle schematic of the present invention.
In figure: 1, control valve, 21, the first direction valve, 22, the second direction valve, 23, third direction valve, 3, bucket arm cylinder, 31, rodless cavity, 32, rod chamber, 4, hydraulic control one-way valve, the 5, first one way valve, 61, the first pipeline, 62, second pipe, the 63, the 3rd pipeline, 64, the 4th pipeline, 71, the first joint, the 72, second joint, 8, spring.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1: the present invention includes control valve 1, first direction valve 21, second direction valve 22, bucket arm cylinder 3, hydraulic control one-way valve 4, fuel tank and the first one way valve 5; A hydraulic fluid port of control valve 1 connects fuel tank, two hydraulic fluid ports are connected in guide's hydraulic fluid port of first direction valve 21, two actuator ports of first direction valve 21 are rodless cavity 31 and the rod chamber 32 of connection bucket rod oil cylinder 3 respectively, and second direction valve 22, hydraulic control one-way valve 4 and the first one way valve 5 are arranged in inner oil duct; Also comprise third direction valve 23, the first pipeline 61, second pipe 62, the 3rd pipeline 63, the 4th pipeline 64, the first joint 71, the second joint 72 and spring 8; The first pipeline 61 1 ends connect the first joint 71, the other end connects the pilot control opening of third direction valve 23, the 4th pipeline 64 1 ends connect the second joint 72, the other end connects the work oil-in of third direction valve 23, second pipe 62 1 ends connect the work oil-out of third direction valve 23, the other end connects fuel tank, and the 3rd pipeline 63 1 ends connect the drain tap of third direction valve 23 spring cavitys, and an end connects fuel tank.
Preferably, the commutation controlled pressure of described third direction valve 23 is regulated by rigidity and the decrement of regulating spring 8.
Preferably, the pressure adjustable range of described third direction valve 23 is 0 to 20Mpa.
in use procedure, control valve 1 makes first direction valve 21 and 22 commutations of second direction valve simultaneously, before the first pipeline 61 inner fluid pressure reach setting value, third direction valve 23 cuts out, bucket arm cylinder 3 rod chamber 32 inner fluids all flow through hydraulic control one-way valve 4 and first direction valve 21, fluid flows to and is divided into two afterwards, the part fluid rear inflow fuel tank of second direction valve 22 of flowing through, another part fluid flows into bucket arm cylinder 3 rodless cavities 31 to improve the speed of stretching out of bucket arm cylinder 3 inner piston rods, after the first pipeline 61 inner fluid pressure reach setting value, 23 commutations of third direction valve, the bucket arm cylinder 3 rod chamber 32 inner fluid parts hydraulic control one-way valve 4 of flowing through, the rear inflow fuel tank of first direction valve 21 and second direction valve 22, another part rear inflow fuel tank of third direction valve 23 of flowing through, reduce thus the rod chamber 32 inner fluid pressure of bucket arm cylinder 3, output action power when stretching out to improve bucket arm cylinder 3 inner piston rods, thereby improve the operating efficiency of hydraulic crawler excavator, reduce fuel consume.
Simultaneously, the commutation controlled pressure of setting third direction valve 23 by rigidity and the decrement of regulating spring 8, set the optimum pressure value make bucket arm cylinder 3 piston rods not only stretch out speed soon but also output action power large.
Claims (3)
1. a hydraulic driving device of excavator, comprise control valve (1), first direction valve (21), second direction valve (22), bucket arm cylinder (3), hydraulic control one-way valve (4), fuel tank and the first one way valve (5); A hydraulic fluid port of control valve (1) connects fuel tank, two hydraulic fluid ports are connected in guide's hydraulic fluid port of first direction valve (21), two actuator ports of first direction valve (21) are rodless cavity (31) and the rod chamber (32) of connection bucket rod oil cylinder (3) respectively, and second direction valve (22), hydraulic control one-way valve (4) and the first one way valve (5) are arranged in inner oil duct; It is characterized in that, also comprise third direction valve (23), the first pipeline (61), second pipe (62), the 3rd pipeline (63), the 4th pipeline (64), the first joint (71), the second joint (72) and spring (8); The first pipeline (61) one ends connect the first joint (71), the other end connects the pilot control opening of third direction valve (23), the 4th pipeline (64) one ends connect the second joint (72), the other end connects the work oil-in of third direction valve (23), second pipe (62) one ends connect the work oil-out of third direction valve (23), the other end connects fuel tank, and the 3rd pipeline (63) one ends connect the drain tap of third direction valve (23) spring cavity, and an end connects fuel tank.
2. a kind of hydraulic driving device of excavator according to claim 1, is characterized in that, the commutation controlled pressure of described third direction valve (23) is regulated by rigidity and the decrement of regulating spring (8).
3. a kind of hydraulic driving device of excavator according to claim 1, is characterized in that, the pressure adjustable range of described third direction valve (23) is 0 to 20MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110170092 CN102296664B (en) | 2011-06-23 | 2011-06-23 | Hydraulic driving device of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110170092 CN102296664B (en) | 2011-06-23 | 2011-06-23 | Hydraulic driving device of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102296664A CN102296664A (en) | 2011-12-28 |
| CN102296664B true CN102296664B (en) | 2013-06-05 |
Family
ID=45357327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110170092 Active CN102296664B (en) | 2011-06-23 | 2011-06-23 | Hydraulic driving device of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102296664B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012001562A1 (en) * | 2012-01-27 | 2013-08-01 | Robert Bosch Gmbh | Valve arrangement for a mobile work machine |
| JP6159629B2 (en) * | 2013-09-13 | 2017-07-05 | Ｋｙｂ株式会社 | Fluid pressure control device |
| CN104358286B (en) * | 2014-11-10 | 2016-06-29 | 广西柳工机械股份有限公司 | Deciliter stream selects function pilot operated valve device and loader to determine variable delivery hydraulic system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697933A (en) * | 2003-03-17 | 2005-11-16 | 日立建机株式会社 | Oil pressure circuit for working machines |
| CN1914384A (en) * | 2004-12-28 | 2007-02-14 | 新履带牵引车三菱有限公司 | Control circuit of construction machine |
| CN101392772A (en) * | 2007-04-10 | 2009-03-25 | 神钢建设机械株式会社 | Hydraulic control device of working machine |
| CN202170539U (en) * | 2011-06-23 | 2012-03-21 | 徐州徐工挖掘机械有限公司 | Hydraulic driving device of excavator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4455297B2 (en) * | 2004-11-29 | 2010-04-21 | 住友建機株式会社 | Construction machine drive |
| JP2010047984A (en) * | 2008-08-21 | 2010-03-04 | Sumitomo (Shi) Construction Machinery Co Ltd | Hydraulic circuit of hydraulic excavator |
-
2011
- 2011-06-23 CN CN 201110170092 patent/CN102296664B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697933A (en) * | 2003-03-17 | 2005-11-16 | 日立建机株式会社 | Oil pressure circuit for working machines |
| CN1914384A (en) * | 2004-12-28 | 2007-02-14 | 新履带牵引车三菱有限公司 | Control circuit of construction machine |
| CN101392772A (en) * | 2007-04-10 | 2009-03-25 | 神钢建设机械株式会社 | Hydraulic control device of working machine |
| CN202170539U (en) * | 2011-06-23 | 2012-03-21 | 徐州徐工挖掘机械有限公司 | Hydraulic driving device of excavator |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2006-152663A 2006.06.15 |
| JP特开2010-47984A 2010.03.04 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102296664A (en) | 2011-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101408107B (en) | Energy-saving type shield propulsion hydraulic system by using zone control | |
| CN202249733U (en) | Hydraulic device of drill | |
| CN104047912B (en) | The digital pump controlled hydraulic differential cylinder in self-powered source | |
| CN202768508U (en) | Hydraulic ram | |
| CN102704525B (en) | Hydraulic loop of excavator | |
| CN203743127U (en) | Hydraulic system for engineering oil cylinder durability test | |
| CN101408108B (en) | Shield cutter head hydraulic system driven by mixed motor serial connection and parallel connection | |
| CN105545882A (en) | Electro-hydraulic synchronous uniform loading cutter driving system of tunneling machine | |
| CN106223391A (en) | A kind of excavator energy regenerating and utilize system | |
| CN103498491B (en) | A kind of dipper prior control loop of excavator and control method thereof | |
| CN102296664B (en) | Hydraulic driving device of excavator | |
| CN201433948Y (en) | Fluid differential circuit | |
| CN206467707U (en) | A kind of excavator energy regenerating and utilize system | |
| EP2853755A1 (en) | Energy recycling system for working device | |
| CN202170539U (en) | Hydraulic driving device of excavator | |
| CN108050113B (en) | Control system for preventing reverse rotation of power head of horizontal directional drilling machine | |
| CN102535575A (en) | Hydraulic control energy-saving device of crawler-type hydraulic digging machine | |
| CN204163129U (en) | Excavator swing arm hydraulic cylinder flow regenerative system | |
| CN202492880U (en) | Hydraulically-controlled energy-saving device for crawler-type hydraulic excavator | |
| CN202789859U (en) | Hydraulic energy-saving temperature controlling system for loader working equipment | |
| CN109706997A (en) | A kind of excavator hydraulic control system and working method | |
| CN202644637U (en) | Hydraulic circuit for excavator | |
| CN202416433U (en) | Bucket rod speed reduction energy-saving system in hydraulic control positive flow system of excavator | |
| CN205591274U (en) | Small -size excavator combination flow control system | |
| CN201507494U (en) | Pilot valve block of loader operation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |