CN201187064Y - Automatic control device of loading operating organ of digging loader - Google Patents
Automatic control device of loading operating organ of digging loader Download PDFInfo
- Publication number
- CN201187064Y CN201187064Y CNU200820034463XU CN200820034463U CN201187064Y CN 201187064 Y CN201187064 Y CN 201187064Y CN U200820034463X U CNU200820034463X U CN U200820034463XU CN 200820034463 U CN200820034463 U CN 200820034463U CN 201187064 Y CN201187064 Y CN 201187064Y
- Authority
- CN
- China
- Prior art keywords
- control
- valve
- port
- oil
- scraper bowl
- 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
Images
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to an automatic control device for the loading work mechanism of a loader digger which can change an operating angle of a bucket during the action process of a large arm. The control oil port A1 of the bucket pilot operated valve of a control valve and the control oil port B1 of a bucket multiport valve communicate with the bucket control oil port B2 of a pilot operated valve and the bucket control oil port B5 of a multiport valve block; the lifting control oil ports A2 and D2 of the pilot operated valve communicate with the lifting control ports A5 and D5 of the multiport valve block; a pressure sensor S1 and a travel switch electrically connected are installed on an oil way between the lifting control ports D2 and D5; the travel switch is corresponding to a control element on a link mechanism; the pressure sensor S1 is electrically connected with the control valve; a shuffle valve is connected to the bucket control oil ports S2 of the pilot operated valve and the multiport valve block; a pressure relief valve is connected between the oil outlet O1 of the control valve and the oil port C3 of the shuffle valve; the pressure relief valve corresponds to the control element on the link mechanism; a pressure sensor S2 is connected to an oil way between a proportioning valve and the shuffle valve; and the pressure sensor S2 is electrically connected with the pressure sensor S2.
Description
Technical field
The utility model relates to the automaton that a kind of loader-digger loads operating mechanism, belongs to the loader-digger technical field.
Background technology
The loading operating mechanism of loader-digger adopts linkage, and finishes the work of big arm lifting and scraper bowl by hydraulic system.The control device of high-grade loading operating mechanism is by pilot valve and banked direction control valves group and corresponding pipeline formation at present, but this control device is owing to can not control big arm lifting simultaneously and the scraper bowl action, therefore in big arm lifting process, scraper bowl can't keep level.Simultaneously, when big arm returned to once the spading position, this scraper bowl can not automatically restore to last spading state, influences operating efficiency.
Summary of the invention
The purpose of this utility model provides and a kind ofly can change the scraper bowl operating angle in big arm course of action, and the loader-digger that can increase work efficiency loads the automaton of operating mechanism.
The utility model is that the technical scheme that achieves the above object is: a kind of loader-digger loads the automaton of operating mechanism, it is characterized in that: comprise pilot valve, control valve, banked direction control valves group, shuttle valve, flow control valve, pressure switch S
1, pressure switch S
2, travel switch and elevating ram and bucket cylinder, the oil inlet P of described control valve
1Connect low pressure oil, the oil-out O on the control valve
1, scraper bowl pilot valve control port A
1And scraper bowl banked direction control valves control port B
1Respectively with pilot valve on oil inlet P
2With scraper bowl control port B
2And the scraper bowl control port B on the banked direction control valves group
5Corresponding and connection communicates; Two lifting control port A of pilot valve
2And D
2Respectively with the banked direction control valves group on two lifting control port A
5And D
5Corresponding and connection communicates the travel switch of electrical connection and pressure switch S
1Be connected the lifting control port D of pilot valve
2Lifting control port D with the banked direction control valves group
5Between oil circuit on, travel switch is corresponding with control member on the linkage, is used to change control valve scraper bowl banked direction control valves control port B
1The pressure switch S of liquid flow path direction
1Be electrically connected with control valve; The hydraulic fluid port A of described shuttle valve
3And B
3Respectively with the scraper bowl control port C of pilot valve
2And the scraper bowl control valve hydraulic fluid port C5 of banked direction control valves group connects and communicates, flow control valve into and out of hydraulic fluid port respectively with control valve oil-out O
1With another hydraulic fluid port of shuttle valve C
3Connection communicates, and flow control valve is corresponding with control member on the linkage, pressure switch S
2On the oil circuit between connection traffic control valve and the shuttle valve, be used to change control valve scraper bowl banked direction control valves control port B
1The pressure switch S of liquid flow path direction
2Be electrically connected the oil inlet P of banked direction control valves group with control valve
5Connect hydraulic oil, two lifting hydraulic fluid port F on the banked direction control valves group
1, F
2With two scraper bowl hydraulic fluid port G
1, G
2Communicate with two working chambers of elevating ram and bucket cylinder respectively.
The utility model has been set up control valve, shuttle valve and flow control valve on the basis of pilot valve and banked direction control valves group, control the action of flow control valve or travel switch respectively by the control member on the linkage, monitor pressure on each oil circuit respectively by two pressure switches again, after oil circuit pressure reached setting pressure, the oil circuit of control valve inside changed valve scraper bowl banked direction control valves control port B respectively
1The liquid flow path direction, therefore in the course of action of big arm, this hydraulic circuit can be controlled the scraper bowl action automatically, in the lifting process, the linear angle of adjusting scraper bowl makes scraper bowl keep level at big arm, prevent material shedding in moving process effectively, and improve the safety of operation.Equally, in big arm decline process, this hydraulic circuit is also regulated the angle of scraper bowl automatically, makes scraper bowl bottom and ground level, will load equipment and return to last spading state, improves the operating efficiency of loader-digger.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a hydraulic principle structural representation of the present utility model.
Wherein: 1-control valve, 2-pilot valve, 3-pressure switch S
1, 4-shuttle valve, 5-pressure switch S
2, 6-travel switch, 7-flow control valve, 8-banked direction control valves group, 9-elevating ram, 10-bucket cylinder.
The specific embodiment
See shown in Figure 1ly, loader-digger of the present utility model loads the automaton of operating mechanism, comprises pilot valve 2, control valve 1, banked direction control valves group 8, shuttle valve 4, flow control valve 7, pressure switch S
13, pressure switch S
25, travel switch 6 and elevating ram 9 and bucket cylinder 10.Control valve 1 of the present utility model is the 3 position-5 way electromagnetic valve, and banked direction control valves group 8 mainly constitutes the oil inlet P of control valve 1 by scraper bowl connection and lifting connection
1Communicate with low pressure oil by pipeline, this low pressure oil can adopt the guide to control oil, the oil-out O on the control valve 1
1, scraper bowl pilot valve control port A
1And scraper bowl banked direction control valves control port B
1Respectively with pilot valve 2 on oil inlet P
2With scraper bowl control port B
2And the scraper bowl control port B on the banked direction control valves group 8
5Corresponding and connection communicates, and two lifting control port A on the pilot valve 2
2And D
2Then respectively with banked direction control valves group 8 on two lifting control port A
5And D
5The corresponding connection communicates, and by 8 actions of pilot valve 2 control banked direction control valves groups, makes elevating ram 9 realize lifting or contraction.
See shown in Figure 1, pressure switch S of the present utility model
13 and after travel switch 6 is electrically connected, be connected pilot valve 2 lifting control port D
2With banked direction control valves group 8 lifting control port D
5Between oil circuit on, the trip switch 6 is corresponding with control member on the linkage, and pressure switch S
13 are electrically connected with control valve 1, are used to change control valve 1 scraper bowl banked direction control valves control port B
1The liquid flow path direction.In big arm decline process, by the motion of linkage, make control member control travel switch 6 work at interval, and this pressure switch S
13 detect the pressure on this oil circuit, when oil circuit pressure reaches setting value, and pressure switch S
13 control control valves 1 are to change control valve 1 scraper bowl banked direction control valves control port B
1The liquid flow path direction.
See shown in 1 the hydraulic fluid port A of the utility model shuttle valve 4
3And B
3Respectively with the scraper bowl control port C of pilot valve 2
2Scraper bowl control valve hydraulic fluid port C with banked direction control valves group 8
5Connection communicates, the oil inlet and outlet of flow control valve 7 respectively with the oil-out O of control valve 1
1Another hydraulic fluid port C with shuttle valve 4
3Connection communicates, and this flow control valve 7 is manual proportional flow control valve, and flow control valve 7 is corresponding with control member on the linkage, and pressure switch S
2On 5 oil circuits that are connected between flow control valve 7 and the shuttle valve 4, to detect the pressure on this oil circuit, pressure switch S
25 are electrically connected with control valve 1, change control valve 1 scraper bowl banked direction control valves control port B
1The liquid flow path direction.In big arm uphill process, by connecting rod mechanism movement, make control member control flow control valve 7 work at interval, when this oil circuit pressure reaches setting value, pressure switch S
25 control control valves 1 change control valve 1 scraper bowl banked direction control valves control port B
1The liquid flow path direction.The oil inlet P of banked direction control valves group 8 of the present utility model
5Connect hydraulic oil, and two lifting hydraulic fluid port F on the banked direction control valves group 8
1, F
2Communicate with two working chambers of elevating ram 9, promptly the rod chamber of elevating ram 9 and rodless cavity communicate, the lifting or the contraction of control elevating ram 9, two scraper bowl hydraulic fluid port G on the banked direction control valves group 8
1, G
2Communicate with two working chambers of bucket cylinder 10 respectively, promptly the rodless cavity of bucket cylinder 10 and rod chamber communicate, the operating angle of control bucket cylinder 10.
During the utility model work, when low pressure oil enters pilot valve 2 behind control valve 1, through the lifting control port D of pilot valve 2
2And the lifting control port D of banked direction control valves group 8
5Make the lifting connection spool action of banked direction control valves group 8, hydraulic oil is through the oil inlet P of banked direction control valves group 8
5Enter in the rodless cavity of elevating ram 9, the hydraulic oil in elevating ram 9 rod chambers is oil sump tank then.Simultaneously, the leakage oil of banked direction control valves group 8 liftings connection opposite side control mouth is through lifting control port A
5Enter oil sump tank in the pilot valve 2, realize the lifting of big arm.Big arm held upward rises in the process, and the control member in the bindiny mechanism is interrupted makes flow control valve 7 be interrupted action on the spool that is pressed onto flow control valve 7, and low pressure oil enters the scraper bowl control port C of banked direction control valves group 8 through control valve 1, flow control valve 7, shuttle valve 4
5, making the scraper bowl connection spool action of banked direction control valves group 8, hydraulic oil is by the oil inlet P of banked direction control valves group 8
5Enter the rod chamber of bucket cylinder 10, and the hydraulic oil oil sump tank in bucket cylinder 10 rodless cavities makes under the scraper bowl and turns over.Simultaneously, as pressure switch S
25 reach setting pressure, pressure switch S
25 make the scraper bowl banked direction control valves control port B of control valve 1
1Change the liquid flow path direction, the leakage oil of banked direction control valves group 8 scraper bowls connection opposite side control mouth is through control valve 1 oil sump tank, and when control member and flow control valve 7 spools unclamp, then the scraper bowl of banked direction control valves group 8 joins back meta, therefore bucket cylinder 10 oil-breaks continue lifting at big arm, because control member acts on flow control valve 7 spools repeatedly, make scraper bowl remain level in big arm lifting process, the realization scraper bowl is set level automatically.
After big arm gave rise to the extreme higher position, low pressure oil was through the scraper bowl control port C of control valve 1, pilot valve 2
2, shuttle valve 4 and banked direction control valves group 8 scraper bowl control port C
5Make the scraper bowl connection spool action of banked direction control valves group 8, hydraulic oil is through the oil inlet P of banked direction control valves group 8
5Enter in bucket cylinder 10 rod chambers, the hydraulic oil in bucket cylinder 10 rodless cavities is oil sump tank then, the scraper bowl unloading, and the scraper bowl of banked direction control valves group 8 joins back meta, bucket cylinder 10 oil-breaks.Low pressure oil enters pilot valve 2 through control valve 1, through the lifting control port A of pilot valve 2
2And the lifting control port A of banked direction control valves group 8
5, making the lifting connection spool action of banked direction control valves group 8, hydraulic oil is through the oil inlet P of banked direction control valves group 8
5Enter in the rod chamber of elevating ram 9, the hydraulic oil in elevating ram 9 rodless cavities is by banked direction control valves 8 oil sump tanks.Simultaneously, the leakage oil of banked direction control valves group 8 liftings connection opposite side control mouth is through the lifting control port D of banked direction control valves group 8
5Enter oil sump tank in the pilot valve 2, big arm descends automatically.In big arm decline process, control member interruption in the bindiny mechanism is pressed onto on the travel switch 6, travel switch 6 is connected, and when pressure sensor S13 reached setting pressure, pressure sensor S13 control control valve internal oil passages changed the scraper bowl banked direction control valves control port B of control valve 1
1The liquid flow path direction, at this moment, low pressure oil is through the scraper bowl banked direction control valves control port B of control valve 1
1, banked direction control valves group 8 scraper bowl control port B
5, making the scraper bowl connection spool action of banked direction control valves group 8, hydraulic oil is through the oil inlet P of banked direction control valves group 8
5Enter in the rodless cavity of bucket cylinder 10, the interior hydraulic oil of bucket cylinder 10 rod chambers passes through oil sump tank, and scraper bowl upwarps, and simultaneously, the leakage oil of banked direction control valves group 8 scraper bowls connection opposite side control mouth is through shuttle valve 4, manual flow control valve 7 oil sump tanks.Along with big arm continues to descend, scraper bowl continues to upwarp, and when scraper bowl upwarped certain position, the control member on the linkage made travel switch 6 outages, and the scraper bowl connection spool of banked direction control valves group 8 returns meta, and scraper bowl stops action.When big arm drops to last spading position, this moment scraper bowl bottom with ground level just in time, make and load equipment and return to last spading state, thereby realize automatically reseting.
Claims (3)
1, a kind of loader-digger loads the automaton of operating mechanism, it is characterized in that: comprise pilot valve (2), control valve (1), banked direction control valves group (8), shuttle valve (4), flow control valve (7), pressure switch S
1(3), pressure switch S
2(5), travel switch (6) and elevating ram (9) and bucket cylinder (10), the oil inlet P of described control valve (1)
1Connect low pressure oil, the oil-out O on the control valve (1)
1, scraper bowl pilot valve control port A
1And scraper bowl banked direction control valves control port B
1Respectively with pilot valve (2) on oil inlet P
2With scraper bowl control port B
2And the scraper bowl control port B on the banked direction control valves group (8)
5Corresponding and connection communicates; Two lifting control port A of pilot valve (2)
2And D
2Respectively with banked direction control valves group (8) on two lifting control port A
5And D
5Corresponding and connection communicates travel switch of electrical connection (6) and pressure switch S
1(3) be connected the lifting control port D of pilot valve (2)
2Lifting control port D with banked direction control valves group (8)
5Between oil circuit on, travel switch (6) is corresponding with control member on the linkage, is used to change control valve (1) scraper bowl banked direction control valves control port B
1The pressure switch S of liquid flow path direction
1(3) be electrically connected with control valve (1); The hydraulic fluid port A of described shuttle valve (4)
3And B
3Respectively with the scraper bowl control port C of pilot valve (2)
2And the scraper bowl control valve hydraulic fluid port C5 of banked direction control valves group (8) connects and communicates, flow control valve (7) into and out of hydraulic fluid port respectively with control valve (1) oil-out O
1And another hydraulic fluid port of shuttle valve (4) C
3Connection communicates, and flow control valve (7) is corresponding with control member on the linkage, pressure switch S
2(5) be connected on the oil circuit between flow control valve (7) and the shuttle valve (4), be used to change control valve (1) scraper bowl banked direction control valves control port B
1The pressure switch S of liquid flow path direction
2(5) be electrically connected the oil inlet P of banked direction control valves group (8) with control valve (1)
5Connect hydraulic oil, two lifting hydraulic fluid port F on the banked direction control valves group (8)
1, F
2With two scraper bowl hydraulic fluid port G
1, G
2Two working chambers with elevating ram (9) and bucket cylinder (10) communicate respectively.
2, loader-digger according to claim 1 loads the automaton of operating mechanism, and it is characterized in that: described flow control valve (7) is manual operated proportional flow control valve.
3, loader-digger according to claim 1 loads the automaton of operating mechanism, it is characterized in that: described control valve (1) 3 position-5 way electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820034463XU CN201187064Y (en) | 2008-04-28 | 2008-04-28 | Automatic control device of loading operating organ of digging loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820034463XU CN201187064Y (en) | 2008-04-28 | 2008-04-28 | Automatic control device of loading operating organ of digging loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187064Y true CN201187064Y (en) | 2009-01-28 |
Family
ID=40310082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820034463XU Expired - Fee Related CN201187064Y (en) | 2008-04-28 | 2008-04-28 | Automatic control device of loading operating organ of digging loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187064Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041824A (en) * | 2010-12-09 | 2011-05-04 | 三一重机有限公司 | Automatic control system and control method of working device of excavator |
| CN102667006A (en) * | 2009-12-18 | 2012-09-12 | 卡特彼勒公司 | Implement angle correction system and associated loader |
| CN108302073A (en) * | 2018-03-26 | 2018-07-20 | 徐工集团工程机械有限公司 | A kind of automobile-used impeller rotating hydraulic system of sand throwing fire extinguishing |
| CN113915176A (en) * | 2021-03-23 | 2022-01-11 | 上海圣克赛斯液压股份有限公司 | Automatically controlled hydraulic system for driving a power plant |
-
2008
- 2008-04-28 CN CNU200820034463XU patent/CN201187064Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667006A (en) * | 2009-12-18 | 2012-09-12 | 卡特彼勒公司 | Implement angle correction system and associated loader |
| CN102041824A (en) * | 2010-12-09 | 2011-05-04 | 三一重机有限公司 | Automatic control system and control method of working device of excavator |
| CN102041824B (en) * | 2010-12-09 | 2012-08-29 | 三一重机有限公司 | Automatic control system and control method of working device of excavator |
| CN108302073A (en) * | 2018-03-26 | 2018-07-20 | 徐工集团工程机械有限公司 | A kind of automobile-used impeller rotating hydraulic system of sand throwing fire extinguishing |
| CN113915176A (en) * | 2021-03-23 | 2022-01-11 | 上海圣克赛斯液压股份有限公司 | Automatically controlled hydraulic system for driving a power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101775822B (en) | Excavator swing arm descending hydraulic control loop | |
| CN101438064B (en) | Hydraulic control system for working machine | |
| CN106759621B (en) | Load-sensitive formula loading machine determines variable delivery hydraulic system | |
| CN101922162B (en) | Hydraulic system for construction equipment having float function | |
| CN102588359B (en) | Hydraulic system, excavator and control method of hydraulic system | |
| CN201187064Y (en) | Automatic control device of loading operating organ of digging loader | |
| CN102887447B (en) | Hydraulic control loop for amplitude-variable hydraulic cylinder, crane and amplitude-variable control method | |
| US20120067378A1 (en) | Method for Removing Foreign Matter from a Digital Hydraulic Pressure Controller | |
| CN111473008A (en) | Excavator boom cylinder control system and control method | |
| JP2013087547A (en) | Hydraulic drive device for work vehicle | |
| CN107489664A (en) | A kind of load-sensitive and volumetric void fraction formula variable pump and electrohydraulic control system | |
| CN203114764U (en) | Load-sensitive electro-hydraulic proportional multi-way valve | |
| CN201215190Y (en) | Digital solenoid electric valve | |
| CN201679029U (en) | Hydraulically controlled loop on the boom descending of excavator | |
| CN108156868B (en) | Hydraulic control system for adaptive suspension and leveling of sloping field | |
| CN102966132A (en) | Swing arm descending control loop of hydraulic excavator | |
| CN206092548U (en) | Scraper bowl control hydraulic system and concrete mixer truck | |
| CN208363156U (en) | Valve system drops in a kind of bull-dozer fastly | |
| CN111503067A (en) | Acceleration pressurization system | |
| CN202194877U (en) | Variable split-flow change valve | |
| CN108035945B (en) | Control valve group for quantitative system flow proportion output | |
| CN103256334A (en) | Double-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve | |
| CN202732515U (en) | Flow control hydraulic system and engineering machine | |
| CN109914519A (en) | A kind of gravitional force recycle and reuse energy saver based on four oral fluid pressure transformers | |
| CN203498889U (en) | Movable arm floating device of underground carrier-scraper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: China Engineering and Agricultural Machinery Import & Export Co., Ltd. Assignor: Changlin Co., Ltd. Contract record no.: 2010110000051 Denomination of utility model: Automatic control device of loading operating organ of digging loader Granted publication date: 20090128 License type: Exclusive License Record date: 20100511 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: China Engineering and Agricultural Machinery Import & Export Co., Ltd. Assignor: Changlin Co., Ltd. Contract record no.: 2010110000051 Date of cancellation: 20101213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |