CN103267148A - Hydraulic excavator moving arm lift - Google Patents
Hydraulic excavator moving arm lift Download PDFInfo
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- CN103267148A CN103267148A CN2013102099619A CN201310209961A CN103267148A CN 103267148 A CN103267148 A CN 103267148A CN 2013102099619 A CN2013102099619 A CN 2013102099619A CN 201310209961 A CN201310209961 A CN 201310209961A CN 103267148 A CN103267148 A CN 103267148A
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- valve core
- opening
- moving arm
- hydraulic excavator
- oil
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Abstract
The invention discloses a hydraulic excavator moving arm lift which structurally comprises a valve body, a shuttle valve core, a steel ball, a first throttling valve core, a spring, an elastic check ring, a second throttling valve core, and a two-position valve core. An A1 opening and an A2 opening of a pressure-gradient control valve are respectively connected to a left return guide oil opening and a right return guide oil opening of an excavator. A B1 opening and a B2 opening are connected and then are connected to a moving arm lift guide oil opening. A T opening is connected to an oil return opening of an oil tank. When composite motions of returning and moving arm lifting are conducted, the two-position valve core changes positions at the time the moving arm lifts, and returned guide oil is partially discharged back to the oil tank, so that an opening of a valve core is delayed to return and opening speed of the valve core is slowed down, and eventually the purpose that moving arm lifting is conducted before returning is achieved. The hydraulic excavator moving arm lift is simple in structure, low in manufacture cost, stable in performance, long in service life, variable in priority time, and wide in application.
Description
Technical field
The present invention relates to valve, particularly motor-driven arm lifting is dug in a kind of hydraulic pressure control.
Background technique
Hydraulic shovel unloads in the native operation process, can occur getting on the bus be turned back to adorn native vehicle position but swing arm do not rise to can unload soil height, this class excavator operability is bad, operating efficiency is low.Processing to this class problem normally improves preferential loop in valve core opening, the design improvement valve, swing arm is promoted have precedence over revolution, this method effect sometimes is bad, and be limited by the cooperate degree of hydraulic parts producer, some international hydraulic parts producer does not consider worth doing to cooperate at all and improves, and can not reach satisfactory effect.
Summary of the invention
The present invention overcomes the prior art deficiency, provides a kind of Hydraulic Excavator's Boom that can solve to promote and to have precedence over rotating solution as required.The specific operation step is as follows, the hydraulic fluid port of pressure-gradient control valve correctly is connected to digger revolving, guide's control port and tank drainback mouth that swing arm promotes, like this when revolution and swing arm lifting composite move, two-position valve core (8) transposition when swing arm promotes, rotating guide oil is suitably released a part of oil sump tank, thereby delay the opening of rotary valve key and its opening speed that slows down, finally reach and make the swing arm lifting have precedence over rotating purpose, simultaneously, can change the simple in structure of preferential time by the restriction size that changes first throttle spool (4) and second throttling valve core (7), easy to manufacture, easy to install, safe and reliable a kind of hydraulic pressure control is dug motor-driven arm and is promoted.
Technical solution of the present invention is such, and a kind of Hydraulic Excavator's Boom promotes, and comprises valve body, shuttle valve core, steel ball, first throttle spool, spring, circlip, second throttling valve core, two-position valve core.It is characterized in that valve body (1) is equipped with shuttle valve core (2), first throttle spool (4), second throttling valve core (7), two-position valve core (8).It is interconnected.
Steel ball (3) is arranged between the shuttle valve core (2), between first throttle spool (4) and the two-position valve core (8) spring (5) is arranged.
The A1 of shuttle valve core, A2 mouth connect respectively on the left and right sides rotary valve oil diverting port of control pick machine, and the B1 of first throttle valve, two-position valve core, B2 mouth are received swing arm and promoted on the oil diverting port, and TO receives the tank drainback mouth.
The present invention's outstanding advantage compared with prior art is to install simple pressure-gradient control valve additional, realize that the Hydraulic Excavator's Boom lifting has precedence over revolution as required, improve operating characteristics and the operating efficiency of hydraulic shovel, have simple in structure, cheap for manufacturing cost, stable performance, long service life, be widely used, can be applied in other different hydraulic systems by changing the preferential time.
Description of drawings
Structure of the present invention constitutes:
Fig. 1 installs the main sectional view of looking of assembling for overall structure of the present invention.
Fig. 2 is fuel tap of the present invention and oil circuit connection diagram.
Among Fig. 1～Fig. 2, valve body (1), shuttle valve core (2), steel ball (3), first throttle spool (4), spring (5), circlip (6), second throttling valve core (7), two-position valve core (8).
Embodiment
Below in conjunction with the present invention is further described, the A1 of pressure-gradient control valve, A2 mouth receive respectively excavator about on the revolution guide hydraulic fluid port, receive swing arm after B1, B2 mouth link to each other and promote on guide's hydraulic fluid port, the T mouth is received the tank drainback mouth, installs to connect to finish.Like this, when revolution and swing arm lifting composite move, two-position valve core (8) transposition suitably released a part of oil sump tank to rotating guide oil when swing arm promoted, thereby delay the opening of rotary valve key and its opening speed that slows down, finally reach and swing arm is promoted have precedence over rotating purpose.Simultaneously, can change the preferential time by the restriction size that changes first throttle spool (4) and second throttling valve core (7).
Claims (3)
1. a Hydraulic Excavator's Boom promotes, comprise valve body, shuttle valve core, steel ball, first throttle spool, spring, circlip, second throttling valve core, two-position valve core, it is characterized in that valve body (1) is equipped with shuttle valve core (2), first throttle valve (4), second throttle valve (7), two-position valve core (8).It is interconnected.
2. promote according to the described a kind of Hydraulic Excavator's Boom of claim 1, it is characterized in that steel ball (3) is arranged between the shuttle valve core (2), between first throttle valve (4) and the two-position valve core (8) spring (5) is arranged.
3. promote according to the described a kind of Hydraulic Excavator's Boom of claim 1, A1, the A2 mouth that it is characterized in that shuttle valve core (2) connect respectively control pick machine about on the revolution guide hydraulic fluid port, the B1 of first throttle valve (4), two-position valve core (8), B2 mouth are received swing arm and are promoted on guide's hydraulic fluid port, and TO receives the tank drainback mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102099619A CN103267148A (en) | 2013-05-31 | 2013-05-31 | Hydraulic excavator moving arm lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102099619A CN103267148A (en) | 2013-05-31 | 2013-05-31 | Hydraulic excavator moving arm lift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103267148A true CN103267148A (en) | 2013-08-28 |
Family
ID=49010792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102099619A Pending CN103267148A (en) | 2013-05-31 | 2013-05-31 | Hydraulic excavator moving arm lift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103267148A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015147A (en) * | 2016-07-28 | 2016-10-12 | 安徽环球传动科技有限公司 | Shuttle valve with middle position unloading function and braking system for hydraulic motor drive |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098286A (en) * | 1975-12-19 | 1978-07-04 | J.C. Bamford Excavators Limited | Hydraulic control valve assembly |
| CN2041374U (en) * | 1988-06-10 | 1989-07-19 | 北京起重机器厂 | Hydraulic lifting group valve |
| CN102003425A (en) * | 2010-11-29 | 2011-04-06 | 广西玉柴重工有限公司 | Priority valve for hydraulic excavator |
| WO2011116677A1 (en) * | 2010-03-21 | 2011-09-29 | 长沙中联重工科技发展股份有限公司 | Control loop and unloading multipath reversing valve for multi support legs of crane |
-
2013
- 2013-05-31 CN CN2013102099619A patent/CN103267148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098286A (en) * | 1975-12-19 | 1978-07-04 | J.C. Bamford Excavators Limited | Hydraulic control valve assembly |
| CN2041374U (en) * | 1988-06-10 | 1989-07-19 | 北京起重机器厂 | Hydraulic lifting group valve |
| WO2011116677A1 (en) * | 2010-03-21 | 2011-09-29 | 长沙中联重工科技发展股份有限公司 | Control loop and unloading multipath reversing valve for multi support legs of crane |
| CN102003425A (en) * | 2010-11-29 | 2011-04-06 | 广西玉柴重工有限公司 | Priority valve for hydraulic excavator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015147A (en) * | 2016-07-28 | 2016-10-12 | 安徽环球传动科技有限公司 | Shuttle valve with middle position unloading function and braking system for hydraulic motor drive |
| CN106015147B (en) * | 2016-07-28 | 2017-12-15 | 安徽环球传动科技有限公司 | A kind of shuttle valve with middle position unloading function and fluid motor-driven brakes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130828 |