CN201817846U - Pilot controlled system for false action of excavator - Google Patents
Pilot controlled system for false action of excavator Download PDFInfo
- Publication number
- CN201817846U CN201817846U CN2010205615758U CN201020561575U CN201817846U CN 201817846 U CN201817846 U CN 201817846U CN 2010205615758 U CN2010205615758 U CN 2010205615758U CN 201020561575 U CN201020561575 U CN 201020561575U CN 201817846 U CN201817846 U CN 201817846U
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- Prior art keywords
- valve
- pilot valve
- walking
- loop
- pilot
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- 239000003921 oil Substances 0.000 claims abstract description 21
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 5
- 206010016970 Foot fracture Diseases 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Operation Control Of Excavators (AREA)
Abstract
The utility model relates to a pilot controlled system for false actions of excavators, which comprises a revolution dipper pilot valve loop, a movable arm bucket pilot valve loop, a breaking foot-operated pilot valve loop, a back and forth shift reversing loop, a walking pilot valve, a manual exchange valve and a hydraulic oil box. The pilot controlled system is characterized in that a check valve is arranged at the front of the P opening of the walking pilot valve and the manual exchange valve is connected with an oil way connected with the check valve. According to the utility model, a check valve is arranged at the front of the P opening of the walking pilot valve. When walking, the manual exchange valve is reversed and the working apparatus ( the revolution dipper pilot valve loop, the movable arm bucket pilot valve loop and the breaking foot-operated pilot valve loop), supporting legs and prior oil conduits of dozers are cut off. Then oil is only provided for the walking oil way, thereby avoiding the false actions of excavators during walking. Meanwhile, when the working apparatus is operated, false actions during walking are avoided due to the neutral position of the manual exchange valve, even if the walking pilot valve is turned on.
Description
Technical field
The utility model belongs to excavator, relates in particular to a kind of excavator false action-proof guide control system.
Background technology
Guide's control system of excavator on the market all adopts the electromagnetic valve group control of arrangement convenience now, and electromagnetic valve can be installed in outside the drivers' cab easily.Because the excavator work under bad environment, dust, vibrations often cause the jam phenomenon of electromagnetic valve core all than greatly.In order to overcome above-mentioned shortcoming, the electromagnetic valve in guide's control system is removed, make hand-operated valve into, hand-operated valve is arranged in the drivers' cab.Number of patent application 201020104199.X discloses a kind of convertible control system of pilot control of hydraulic crawler excavator, this system comprises hydraulic pump, main valve and left hand pilot valve assembly, variable plunger displacement pump in the hydraulic pump and gear pump link to each other with corresponding hydraulic fluid port on the main valve respectively, pioneer pump in the hydraulic pump links to each other the outer pendulum hydraulic fluid port of left hand pilot valve assembly by the corresponding hydraulic fluid port on security solenoid valve and left hand pilot valve assembly top and a corresponding hydraulic fluid port on rotary motor reductor assembly top, the left-hand rotation hydraulic fluid port, be connected with hand-operated direction valve between the corresponding hydraulic fluid port of interior receiving port and right-hand rotation hydraulic fluid port and main valve.On the basis of original system, increase a hand-operated direction valve, can realize about the left hand pilot valve is to complete machine receiving in revolution and the dipper exchange of outer pendulum manipulation, do not need dismounting guide oil pipe, avoided because of dismounting to the pollution of hydraulic system and to the pollution of environment, reduce the waste of hydraulic oil, reduced labour cost, improved economic benefit.For easy to operate, the pilot operated bar is arranged in by the handrail of seat.Because in the excavator walking, the off-load pilot valve is opened, the pilot valve of the pilot valve of equipment and supporting leg and dozer also all is in holding state, and driver's arm when operation is easy to run into the pilot operated bar, misoperation occurs, easily causes serious accident.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provide a kind of excavator false action-proof guide control system, excavator is when walking, with manual rotary valve commutation, cut off guide's oil circuit of equipment, supporting leg and dozer, separately for the walking oil circuit, the misoperation accident takes place when then having avoided the excavator walking only.Simultaneously, when excavator is worked,,, also can not cause the misoperation of walking because hand-operated direction valve is in neutral gear position even depress the walking pilot valve.
The utility model for achieving the above object, by the following technical solutions: a kind of excavator false action-proof guide control system, comprise revolution, dipper pilot valve loop, swing arm, scraper bowl pilot valve loop, broken foot-operated pilot valve loop, front-and-back stop commutation loop and walking pilot valve, hand-operated direction valve and hydraulic oil container, it is characterized in that: increase an one way valve before the P mouth of described walking pilot valve, described hand-operated direction valve connects with the oil circuit that is connected one way valve.
Beneficial effect: increased an one way valve, transformed oil piping system cleverly, with regard to the solution of success the problem of misoperation, and can reduce by 400 yuan cost.Promptly before the P mouth of walking pilot valve, increase an one way valve, when walking, hand-operated direction valve is commutated, equipment (revolution, dipper pilot valve loop have been cut off, swing arm, scraper bowl pilot valve loop, broken foot-operated pilot valve loop), guide's oil pipe of supporting leg and dozer, separately for the walking oil circuit, the misoperation accident takes place when then having avoided the excavator walking only.Simultaneously, when equipment is worked,,, also can not cause the misoperation of walking because hand-operated direction valve is in neutral gear position even depress the walking pilot valve.
Description of drawings
Fig. 1 is oil piping system catenation principle figure of the present utility model;
Fig. 2 is the oil piping system catenation principle figure before improving.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in the figure,
A kind of excavator false action-proof guide control system, comprise revolution, dipper pilot valve loop 1, swing arm, scraper bowl pilot valve loop 2, broken foot-operated pilot valve loop 3, front-and-back stop commutation loop 5, walking pilot valve 4, hand-operated direction valve 9, shuttle valve 6, parking brake 7, stopping brake rotary valve 8, guide's unloader 9, guide's accumulator 10, breather valve 11, pioneer pump 13 and hydraulic oil container 12, increase an one way valve 14 before the P mouth of described walking pilot valve, described hand-operated direction valve connects with the oil circuit that is connected one way valve.
Operating principle: see Fig. 2 for details, before the improvement, when unloader is not worked in system the guide oil off-load is fallen, whole system is quit work.When excavator is worked, guide oil is offered pilot system, be about to unloader and switch all duties, provide guide oil to work pilot system, system's operate as normal.But when walking,, will cause misoperation, might cause great accident if driver's arm is run into guide's handle.
See Fig. 1 for details, after the improvement, when excavator is walked, if the guide oil off-load of work system is fallen, when excavator is walked, after hand-operated direction valve 9 commutations, the one way valve 14 that increases before the P mouth of walking pilot valve, cut off guide's oil pipe of equipment, supporting leg and dozer,, then can avoid the misoperation in the excavator walking only separately for the walking oil circuit.Simultaneously, in revolution, dipper pilot valve loop, swing arm, scraper bowl pilot valve loop, during the work of equipments such as broken foot-operated pilot valve loop, even operator's mistake depresses the walking pilot valve,, also can not cause the misoperation of walking because hand-operated direction valve is in neutral gear position.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (1)
1. excavator false action-proof guide control system, comprise revolution, dipper pilot valve loop, swing arm, scraper bowl pilot valve loop, broken foot-operated pilot valve loop, front-and-back stop commutation loop and walking pilot valve, hand-operated direction valve and hydraulic oil container is characterized in that: increase an one way valve before the P mouth of described walking pilot valve, described hand-operated direction valve connects with the oil circuit that is connected one way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205615758U CN201817846U (en) | 2010-10-14 | 2010-10-14 | Pilot controlled system for false action of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205615758U CN201817846U (en) | 2010-10-14 | 2010-10-14 | Pilot controlled system for false action of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201817846U true CN201817846U (en) | 2011-05-04 |
Family
ID=43915809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205615758U Expired - Fee Related CN201817846U (en) | 2010-10-14 | 2010-10-14 | Pilot controlled system for false action of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201817846U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204365A (en) * | 2012-03-23 | 2014-12-10 | 洋马株式会社 | Rotation type working vehicle |
| CN104343760A (en) * | 2013-08-08 | 2015-02-11 | 奉化液压件三厂(普通合伙) | Unloading multiple directional control valve |
| CN110182192A (en) * | 2019-06-28 | 2019-08-30 | 徐州徐工特种工程机械有限公司 | Slide anti-misoperation parking braking hydraulic system and its control method |
| CN110608207A (en) * | 2019-09-19 | 2019-12-24 | 柳州柳工挖掘机有限公司 | Emergency unloading device for hydraulic actuating element of engineering machinery |
| CN111456145A (en) * | 2020-04-14 | 2020-07-28 | 三一重机有限公司 | Parking protection system and excavator |
-
2010
- 2010-10-14 CN CN2010205615758U patent/CN201817846U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204365A (en) * | 2012-03-23 | 2014-12-10 | 洋马株式会社 | Rotation type working vehicle |
| CN104204365B (en) * | 2012-03-23 | 2016-08-24 | 洋马株式会社 | Swing work vehicle |
| CN104343760A (en) * | 2013-08-08 | 2015-02-11 | 奉化液压件三厂(普通合伙) | Unloading multiple directional control valve |
| CN110182192A (en) * | 2019-06-28 | 2019-08-30 | 徐州徐工特种工程机械有限公司 | Slide anti-misoperation parking braking hydraulic system and its control method |
| CN110182192B (en) * | 2019-06-28 | 2024-03-26 | 徐州徐工特种工程机械有限公司 | Slip misoperation-preventing parking brake hydraulic system and control method thereof |
| CN110608207A (en) * | 2019-09-19 | 2019-12-24 | 柳州柳工挖掘机有限公司 | Emergency unloading device for hydraulic actuating element of engineering machinery |
| CN110608207B (en) * | 2019-09-19 | 2021-05-14 | 柳州柳工挖掘机有限公司 | Emergency unloading device for hydraulic actuating element of engineering machinery |
| CN111456145A (en) * | 2020-04-14 | 2020-07-28 | 三一重机有限公司 | Parking protection system and excavator |
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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: 20110504 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |