CN204510309U - A kind of bulldozer monolever realizes many actions hydraulic circuit - Google Patents
A kind of bulldozer monolever realizes many actions hydraulic circuit Download PDFInfo
- Publication number
- CN204510309U CN204510309U CN201520201623.5U CN201520201623U CN204510309U CN 204510309 U CN204510309 U CN 204510309U CN 201520201623 U CN201520201623 U CN 201520201623U CN 204510309 U CN204510309 U CN 204510309U
- Authority
- CN
- China
- Prior art keywords
- valve
- mouth
- control
- communicated
- 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.)
- Expired - Fee Related
Links
- 230000009471 action Effects 0.000 title claims abstract description 18
- ZBMRKNMTMPPMMK-UHFFFAOYSA-N 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid;azane Chemical compound [NH4+].CP(O)(=O)CCC(N)C([O-])=O ZBMRKNMTMPPMMK-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000008859 change Effects 0.000 claims abstract description 62
- 208000028804 PERCHING syndrome Diseases 0.000 claims abstract description 56
- 239000002828 fuel tank Substances 0.000 claims abstract description 12
- 230000006872 improvement Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Abstract
The utility model provides a kind of bulldozer monolever and realizes many actions hydraulic circuit, comprise fuel tank, hydraulic pump, perching knife oil circuit control, ridge buster oil circuit control and pilot control oil circuit, described perching knife oil circuit control and the parallel connection of ridge buster oil circuit control, it is characterized in that: described pilot control oil circuit comprises a pilot valve and a reversal valve group, described reversal valve group comprises the two-position four way change valve I and a two-position four way change valve II that are in parallel, the K1 of described pilot valve controls mouth and is communicated with the P mouth of two-position four way change valve II, the K2 of described pilot valve controls mouth and is communicated with the P mouth of two-position four way change valve I.The program by increasing reversal valve group in guide oil road, and achieve pilot valve one control mouth and can control multiple main valve by switching, this improvement had both met the comfortableness of driving, again economy and beautiful appearance.
Description
Technical field
The utility model relates to a kind of bulldozer monolever and realize many actions hydraulic circuit.
Background technology
General hydraulic system of bulldozer executive component has two groups, is that perching knife controls oil cylinder respectively, comprises perching knife lift cylinder, shovel blade inclination oil cylinder.Another group controls oil cylinder for ridge buster, comprises ridge buster lift cylinder, ridge buster dump ram (mainly high-power type application).So bulldozer all can control the pilot handle (pilot valve) of mouth with two four, complete the manipulation to main valve, as shown in accompanying drawing (1).
Bulldozer leading hydraulic system all can apply two pilot handles, and pilot handle generally can be arranged in driver's cabin right panel.The pilot handle that perching knife control valve is corresponding is placed on front side, and ridge buster handle is near rear side.The advantage of such layout is because perching knife is on front side of car body, driver just can execution process without the need for too large body action when handling perching knife, and ridge buster is on rear side of car body, need when handling ridge buster to lean to one side, for driving, unskilled personnel can well observe ridge buster course of action.Shortcoming is the driver for skilled operation, does not need to go for a long time to observe ridge buster action situation, but will note advancing of vehicle, will produce arm fatigue, the comfortableness that impact is driven like this because of long-time manipulation ridge buster.In addition for moving the machinery such as bulldozer mutation of establishing machine, executive component is not handled more inconvenient on rear side of car body.
How to design one and both take into account driver comfort, again can cost-saving hydraulic circuit? this is the weak point existing for prior art.
Summary of the invention
Technical problem to be solved in the utility model, be exactly for the deficiency existing for prior art, and provide a kind of bulldozer monolever to realize many actions hydraulic circuit technical scheme, the program by increasing reversal valve group in guide oil road, achieve pilot valve one control mouth and can control multiple main valve by switching, this improvement had both met the comfortableness of driving, again economy and beautiful appearance.
This programme is achieved by the following technical measures: a kind of bulldozer monolever realizes many actions hydraulic circuit, comprise fuel tank, hydraulic pump, perching knife oil circuit control, ridge buster oil circuit control and pilot control oil circuit, described perching knife oil circuit control and the parallel connection of ridge buster oil circuit control, described pilot control oil circuit comprises a pilot valve and a reversal valve group, described reversal valve group comprises the two-position four way change valve I and a two-position four way change valve II that are in parallel, the K1 of described pilot valve controls mouth and is communicated with the P mouth of two-position four way change valve II, the K2 of described pilot valve controls mouth and is communicated with the P mouth of two-position four way change valve I.
Further improvement of the utility model also has, what described two-position four way change valve I and two-position four way change valve II all adopted is pilot operated directional control valve, the hydraulic control mouth of two-position four way change valve I is all communicated with the A mouth of two position three way directional control valve with the hydraulic control mouth of two-position four way change valve II, and the P mouth of described two position three way directional control valve is communicated with pilot control P.
Further improvement of the utility model also has, and what described two-position four way change valve I and two-position four way change valve II all adopted is solenoid operated directional valve.
Further improvement of the utility model also has, described perching knife oil circuit control comprises perching knife control valve and perching knife controls oil cylinder, guide's oil-in C3 of described perching knife control valve is communicated with the A mouth of two-position four way change valve II, guide's oil-in C1 of described perching knife control valve is communicated with the A mouth of two-position four way change valve I, the oil-out of described hydraulic pump is communicated with the P mouth of perching knife control valve, A mouth and the perching knife of described perching knife control valve control oil cylinder rodless cavity be communicated with, described perching knife controls the rod chamber of oil cylinder and is communicated with the B mouth of perching knife control valve, the O mouth that described perching knife controls oil cylinder is communicated with fuel tank.
Further improvement of the utility model also has, described ridge buster oil circuit control comprises ridge buster control valve and ridge buster controls oil cylinder, guide's oil-in C4 of described ridge buster is communicated with the B mouth of two-position four way change valve II, guide's oil-in C2 of described ridge buster is communicated with the B mouth of two-position four way change valve I, the oil-out of described hydraulic pump is communicated with the P mouth of ridge buster control valve, A mouth and the ridge buster of described ridge buster control valve control oil cylinder rod chamber be communicated with, described ridge buster controls the rodless cavity of oil cylinder and is communicated with the B mouth of ridge buster control valve, the O mouth that described ridge buster controls oil cylinder is communicated with fuel tank.
Further improvement of the utility model also has, and is provided with one way valve, is provided with one way valve between the oil-out of described hydraulic pump and the P mouth of ridge buster control valve between the oil-out of described hydraulic pump and the P mouth of perching knife control valve.
The beneficial effect of this programme can be learnt according to describing of such scheme, the utility model adds reversal valve group and decreases the number of pilot valve, constitute shirtsleeve operation switch unit, achieve pilot valve one and control mouth by switching the function that can control multiple main valve, improve bulldozer operating valve leading hydraulic system loop, utilize a monolever just can complete multiple action, this improvement can optimize cab space layout, make driver's cabin more succinctly attractive in appearance, relative two stick controls more meet pilot control custom and comfortableness requirement, can also control crank be reduced thus reduce complete machine cost.
As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is the structural representation of the utility model detailed description of the invention.
In figure, 1 is fuel tank, and 2 is hydraulic pump, and 3 is perching knife control valve, 4 is perching knife control oil cylinder, and 5 is ridge buster control valve, and 6 is that ridge buster controls oil cylinder, and 7 is pilot valve, 8 is two-position four way change valve I, and 9 is two-position four way change valve II, and 10 is two position three way directional control valve, 11 pilot control P.
Detailed description of the invention
For the technical characterstic of this programme can be clearly demonstrated, below by a detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
Can be found out by accompanying drawing, a kind of bulldozer monolever realizes many actions hydraulic circuit, comprise fuel tank 1, hydraulic pump 2, perching knife oil circuit control, ridge buster oil circuit control and pilot control oil circuit, described perching knife oil circuit control and the parallel connection of ridge buster oil circuit control, described pilot control oil circuit comprises a pilot valve 7 and a reversal valve group, described reversal valve group comprises the two-position four way change valve I 8 and a two-position four way change valve II 9 that are in parallel, the K1 of described pilot valve 7 controls mouth and is communicated with the P mouth of two-position four way change valve 9 II, the K2 of described pilot valve 7 controls mouth and is communicated with the P mouth of two-position four way change valve I 8.
What described two-position four way change valve I 8 and two-position four way change valve II 9 all adopted is pilot operated directional control valve, the hydraulic control mouth of two-position four way change valve I 8 is all communicated with the A mouth of two position three way directional control valve 10 with the hydraulic control mouth of two-position four way change valve II 9, and the P mouth of described two position three way directional control valve 10 is communicated with pilot control P11.The effect of two position three way directional control valve 10 is the switchings controlling two-position four way change valve I 8 and two-position four way change valve II 9.
What two-position four way change valve I 8 and two-position four way change valve II 9 also can adopt is solenoid operated directional valve, like this, just can, without two position three way directional control valve 10, adopt automatically controlled scheme only to need two reversal valves.
Described perching knife oil circuit control comprises perching knife control valve 3 and perching knife controls oil cylinder 4, guide's oil-in C3 of described perching knife control valve 3 is communicated with the A mouth of two-position four way change valve II 9, guide's oil-in C1 of described perching knife control valve 3 is communicated with the A mouth of two-position four way change valve I 8, the oil-out of described hydraulic pump 2 is communicated with the P mouth of perching knife control valve 3, A mouth and the perching knife of described perching knife control valve 3 control oil cylinder 4 rodless cavity be communicated with, described perching knife controls the rod chamber of oil cylinder 4 and is communicated with the B mouth of perching knife control valve 3, and the O mouth that described perching knife controls oil cylinder 4 is communicated with fuel tank 1.
Described ridge buster oil circuit control comprises ridge buster control valve 5 and ridge buster controls oil cylinder 6, guide's oil-in C4 of described ridge buster is communicated with the B mouth of two-position four way change valve II 9, guide's oil-in C2 of described ridge buster is communicated with the B mouth of two-position four way change valve I 8, the oil-out of described hydraulic pump 2 is communicated with the P mouth of ridge buster control valve 5, A mouth and the ridge buster of described ridge buster control valve 5 control oil cylinder 6 rod chamber be communicated with, described ridge buster controls the rodless cavity of oil cylinder 6 and is communicated with the B mouth of ridge buster control valve 5, the O mouth that described ridge buster controls oil cylinder 6 is communicated with fuel tank 1.
Be provided with one way valve between the oil-out of described hydraulic pump 2 and the P mouth of perching knife control valve 3, between the oil-out of described hydraulic pump 2 and the P mouth of ridge buster control valve 5, be provided with one way valve.
One: at not control crank constantly, the K1 of pilot valve 7 controls mouth and K2 controls the obstructed pilot pressure oil of mouth, so pilot control P11 comes oilyly all to flow back to fuel tank 1.
Two: during control crank:
(1) when not handling reversal valve group, two-position four way change valve I 8 and a two-position four way change valve II 9 are all in left position, then now the K1 control mouth of pilot valve 7 is connected with guide's oil-in C3 of perching knife control valve 3 through two-position four way change valve II 9, the pressure oil at operating grip pilot control P11 place flows to C3 through K1 makes perching knife control valve 3 be in left position, perching knife controls oil cylinder 4 and moves to rodless cavity side, controls perching knife and declines; Or the K2 of pilot valve 7 controls mouth and is connected with guide's oil-in C1 of ridge buster control valve 5 through two-position four way change valve I 8, the pressure oil at operating grip pilot control P11 place flows to C1 through K2 makes ridge buster control valve 5 be in right position, ridge buster controls oil cylinder 6 rod chamber side and moves, and controls perching knife and rises;
(2) when operating valve set, two-position four way change valve I 8 and a two-position four way change valve II 9 is made all to be in right position.What adopt in the present embodiment is liquid controlled reversing, and the pressure oil at pilot control P11 place through the left position of two position three way directional control valve 10, and controls two-position four way change valve I 8 and a two-position four way change valve II 9 commutation extremely right position, thus realizes the switching of hydraulic fluid port.If employing solenoid operated directional valve, two-position four way change valve I 8 and a two-position four way change valve II 9 is then directly made to be energized, now the K1 control mouth of pilot valve 7 is connected with guide's oil-in C4 of ridge buster through two-position four way change valve II 9, the pressure oil at operating grip pilot control P11 place flows to C4 through K1 makes ridge buster control valve 5 be in left position, ridge buster controls oil cylinder 6 and moves to rod chamber side, controls ridge buster and rises; Or the K2 of pilot valve 7 controls mouth and is connected with guide's oil-in C2 of ridge buster control valve 5 through two-position four way change valve I 8, the pressure oil at operating grip pilot control P11 place flows to C2 through K2 makes ridge buster control valve 5 be in right position, ridge buster controls oil cylinder 6 and moves to rodless cavity side, controls ridge buster and declines.
Bulldozer operating valve is tandem, so the same time can only complete a control action, so this structure optimization can not affect the normal operational of bulldozer.
By reference to the accompanying drawings the detailed description of the invention of utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (6)
1. a bulldozer monolever realizes many actions hydraulic circuit, comprise fuel tank, hydraulic pump, perching knife oil circuit control, ridge buster oil circuit control and pilot control oil circuit, described perching knife oil circuit control and the parallel connection of ridge buster oil circuit control, it is characterized in that: described pilot control oil circuit comprises a pilot valve and a reversal valve group, described reversal valve group comprises the two-position four way change valve I and a two-position four way change valve II that are in parallel, the K1 of described pilot valve controls mouth and is communicated with the P mouth of two-position four way change valve II, the K2 of described pilot valve controls mouth and is communicated with the P mouth of two-position four way change valve I.
2. bulldozer monolever according to claim 1 realizes many actions hydraulic circuit, it is characterized in that: what described two-position four way change valve I and two-position four way change valve II all adopted is pilot operated directional control valve, the hydraulic control mouth of two-position four way change valve I is all communicated with the A mouth of two position three way directional control valve with the hydraulic control mouth of two-position four way change valve II, and the P mouth of described two position three way directional control valve is communicated with pilot control P.
3. bulldozer monolever according to claim 1 realizes many actions hydraulic circuit, it is characterized in that: what described two-position four way change valve I and two-position four way change valve II all adopted is solenoid operated directional valve.
4. the bulldozer monolever according to Claims 2 or 3 realizes many actions hydraulic circuit, it is characterized in that: described perching knife oil circuit control comprises perching knife control valve and perching knife controls oil cylinder, guide's oil-in C3 of described perching knife control valve is communicated with the A mouth of two-position four way change valve II, guide's oil-in C1 of described perching knife control valve is communicated with the A mouth of two-position four way change valve I, the oil-out of described hydraulic pump is communicated with the P mouth of perching knife control valve, A mouth and the perching knife of described perching knife control valve control oil cylinder rodless cavity be communicated with, described perching knife controls the rod chamber of oil cylinder and is communicated with the B mouth of perching knife control valve, the O mouth that described perching knife controls oil cylinder is communicated with fuel tank.
5. bulldozer monolever according to claim 4 realizes many actions hydraulic circuit, it is characterized in that: described ridge buster oil circuit control comprises ridge buster control valve and ridge buster controls oil cylinder, guide's oil-in C4 of described ridge buster is communicated with the B mouth of two-position four way change valve II, guide's oil-in C2 of described ridge buster is communicated with the B mouth of two-position four way change valve I, the oil-out of described hydraulic pump is communicated with the P mouth of ridge buster control valve, A mouth and the ridge buster of described ridge buster control valve control oil cylinder rod chamber be communicated with, described ridge buster controls the rodless cavity of oil cylinder and is communicated with the B mouth of ridge buster control valve, the O mouth that described ridge buster controls oil cylinder is communicated with fuel tank.
6. bulldozer monolever according to claim 5 realizes many actions hydraulic circuit, it is characterized in that: between the oil-out of described hydraulic pump and the P mouth of perching knife control valve, be provided with one way valve, between the oil-out of described hydraulic pump and the P mouth of ridge buster control valve, be provided with one way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201623.5U CN204510309U (en) | 2015-04-03 | 2015-04-03 | A kind of bulldozer monolever realizes many actions hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201623.5U CN204510309U (en) | 2015-04-03 | 2015-04-03 | A kind of bulldozer monolever realizes many actions hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204510309U true CN204510309U (en) | 2015-07-29 |
Family
ID=53708301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520201623.5U Expired - Fee Related CN204510309U (en) | 2015-04-03 | 2015-04-03 | A kind of bulldozer monolever realizes many actions hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204510309U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106106030A (en) * | 2016-08-17 | 2016-11-16 | 恒天九五重工有限公司 | A kind of tree mover of Hydraulic guide control |
| CN109973447A (en) * | 2019-04-01 | 2019-07-05 | 山东临工工程机械有限公司 | A kind of hydraulic control system and engineering machinery |
-
2015
- 2015-04-03 CN CN201520201623.5U patent/CN204510309U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106106030A (en) * | 2016-08-17 | 2016-11-16 | 恒天九五重工有限公司 | A kind of tree mover of Hydraulic guide control |
| CN109973447A (en) * | 2019-04-01 | 2019-07-05 | 山东临工工程机械有限公司 | A kind of hydraulic control system and engineering machinery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102510852B1 (en) | Hydraulic system and hydraulic control method for construction machine | |
| CN203926235U (en) | Have many actuators loop without throttling hydraulic system | |
| US20130098013A1 (en) | Closed-loop system having multi-circuit flow sharing | |
| CN103122648B (en) | Multi-way valve hydraulic control system, rectilinear walking control valve and excavator | |
| KR102403991B1 (en) | Boom speed increase hydraulic system for construction machinery | |
| US20130098011A1 (en) | Hydraulic system having multiple closed-loop circuits | |
| US20150233094A1 (en) | Wheel Assist Drive with Traction Control System and Method | |
| CN106837902A (en) | Fluid pressure drive device | |
| US8919114B2 (en) | Closed-loop hydraulic system having priority-based sharing | |
| CN205742332U (en) | The hydraulic system of wheel loader | |
| CN204510309U (en) | A kind of bulldozer monolever realizes many actions hydraulic circuit | |
| CN102826118A (en) | Front wheel steering hydraulic system for land scraper with composite operation and land scraper | |
| CN104500465B (en) | Multifunctional agricultural locomotive fluid pressure underpan drive system | |
| CN205661521U (en) | Hydraulic steering control system | |
| US20130098463A1 (en) | Meterless hydraulic system having sharing and combining functionality | |
| CN205331086U (en) | All -hydraulic amphibious tank hydraulic drive control system that travels | |
| CN104029722A (en) | Hydraulic steering system of engineering machine | |
| CN101644067B (en) | Proportional dual-handle control system of grader | |
| CN205742338U (en) | The hydraulic system of wheel loader | |
| CN215922319U (en) | Electro-hydraulic control steering system and loader | |
| CN210509767U (en) | Novel hydraulic system for operation of scraper knife of land leveler | |
| JP2015178864A (en) | Driving device for work machine | |
| CN204475391U (en) | For the hydraulic control system of backhoe loader | |
| CN208311160U (en) | A kind of excavator load sensitive system | |
| CN205591274U (en) | Small -size excavator combination flow control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |