CN102127918B - Hydraulic execution mechanism, hydraulic execution method and excavator - Google Patents
Hydraulic execution mechanism, hydraulic execution method and excavator Download PDFInfo
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- CN102127918B CN102127918B CN201010003396A CN201010003396A CN102127918B CN 102127918 B CN102127918 B CN 102127918B CN 201010003396 A CN201010003396 A CN 201010003396A CN 201010003396 A CN201010003396 A CN 201010003396A CN 102127918 B CN102127918 B CN 102127918B
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Abstract
The invention discloses a hydraulic execution mechanism and a hydraulic execution method for controlling the lifting and rotating composite action of a large arm of an excavator, and the excavator. The excavator at least comprises a main body, a base, the large arm and the hydraulic execution mechanism, wherein the hydraulic execution mechanism at least comprises a controller, a hydraulic pump, a large arm lifting execution part, a rotating action execution part, and a multi-position multi-way reversing valve; and when the hydraulic execution mechanism controls the lifting and rotating of the large arm of the excavator simultaneously, the reversing valve limits hydraulic pressure provided for the rotating action execution part by the hydraulic pump, and increases hydraulic pressure provided for the large arm lifting execution part by the hydraulic pump simultaneously; and through the reversing valve with an intercepting function, hydraulic pressure supplied to rotating action by the hydraulic pump is reduced, so that more hydraulic pressure can be provided for the lifting action of the large arm on the premise of not increasing the capacity of the hydraulic pump, and the lifting action of the large arm is prior to the rotating action of the large arm.
Description
Technical field
The present invention relates to a kind of engineering machinery; Particularly a kind of excavating equipment relates in particular in a kind of composite move of controlling excavator how to realize the big arm hoisting velocity hydraulic actuating mechanism preferential with respect to speed of gyration, hydraulic pressure manner of execution and the excavator that comprises this hydraulic actuating mechanism.
Background technology
Current, be used to excavate sandstone, build dykes and dams, the cubic metre of earth and stone excavating equipment of engineering construction operations such as cleaning river course mainly is various types of excavators.Because it is big that excavator has a turn up active force, characteristics such as operating efficiency height, thereby can be widely used in the job site of most engineering, for example mine, building, traffic, water conservancy, airport, pull down and remove a building for reconstruction, occasion such as urban construction.
Usually, excavator mainly partly is made up of motor (for example, motor), dynamical system (for example, hydraulic pump), equipment (comprising big arm (boom), forearm (arm) and scraper bowl (bucket) etc.), running gear and electrical control etc.Wherein, excavator can be classified according to multiple mode.For example, the type according to principal organ's transmission (dynamical system) of excavator can roughly be divided into full hydraulic excavator and half hydraulic crawler excavator.In addition, according to the type of the walking mechanism of excavator, also can be divided into crawler type, wheeled, truck mounted, suspension type and drag formula excavator etc.Hydraulic crawler excavator is an important kind in the engineering machinery, is a kind of earth moving plant that is widely used in construction projects such as building, railway, highway, water conservancy, mining.Hydraulic crawler excavator utilizes Hydraulic Elements (hydraulic pump, hydraulic motor, hydraulic cylinder etc.) to drive various member actions, and have following advantage: power density is big, and compact conformation is in light weight; Stepless speed regulation, speed adjustable range is big; Startability is good, can realize quick rotating; Flexible arrangement does not receive the restriction of general structure basically; Running is steady, and reliable operation can be lubricated long service life voluntarily; Overload protection function is arranged; Realize automation easily, easy operation is laborsaving etc.Therefore, hydraulic crawler excavator improves construction mechanization level for alleviating the heavy manual labor of workman, and accelerating construction progress promotes the development of each item building cause, and is significant.About the substance of hydraulic crawler excavator, those skilled in the art can be referring to " hydraulic crawler excavator ", and people such as hole German, Zhao Keli, Xu Nin's life write, Chemical Industry Press, and on January 1st, 2007 published.Full content that it should be noted that this publication all is included in here through reference.
Usually, for hydraulic crawler excavator, when carrying out various mining task, need take into account simultaneously fuselage (big arm) with respect to the revolution action of base and big arm with the vertical direction of ground (horizontal plane) on the lifting action the two.In the state of the art, usually, realize machine oil is supplied with to carrying out big arm lifting action and the fuselage executing agency with respect to the revolution action of base respectively equably through for example electromagnetic type control valve.Certainly, it will be appreciated by persons skilled in the art that machine oil only is to realize a kind of preferred implementation of the present invention here, and be not to be used for limiting the present invention, also can use the liquid of the other types that can realize the hydraulic principle equally.
Yet, carry out in the process of mining task at excavator, if big arm is promoted and oil circuit is supplied with in revolution all the time equably, can under prerequisite not, can't bring into play the hoisting power of big arm fully to executing agency's increase-volume.Especially in the occasion of carrying out the tap/dip deep into operation, the hoisting velocity of big arm slowly can have influence on the progress of whole engineering.
Summary of the invention
The objective of the invention is to, a kind of hydraulic actuating mechanism is provided, in the hope of solving at least in part or alleviating aforesaid existing in the art technical problem.
Another object of the present invention is to, a kind of hydraulic pressure manner of execution is provided, in the hope of solving at least in part or alleviating aforesaid existing in the art technical problem.
A purpose more of the present invention is, a kind of excavator is provided, in the hope of solving at least in part or alleviating aforesaid existing in the art technical problem.
According to a first aspect of the invention, a kind of hydraulic actuating mechanism that big arm promotes and revolution is carried out simultaneously of controlling excavator 10 is provided, excavator 10 comprises fuselage main body 100, base 200, big arm 300 and hydraulic actuating mechanism 400 at least.And then hydraulic actuating mechanism 400 comprises that at least controller 401, hydraulic pump 402, big arm promote execution unit 403, revolution action execution unit 404 and control valve 405.Wherein control valve 405 also comprises the reversal valve 406 that a multidigit is led to more; When the big arm of hydraulic actuating mechanism 400 control excavators promotes and revolution when carrying out simultaneously; Control valve 405 limits hydraulic pumps 402 to the hydraulic pressure that revolution action execution unit 404 provides through reversal valve 406 wherein, strengthens hydraulic pump 402 simultaneously and promotes the hydraulic pressure that execution unit 403 provides to big arm.
Preferably, the reversal valve 406 in the control valve 405 is the reversal valves by the 2/2-way of the hydraulic pilot control signal of controller 401 control.
Preferably, controller 401 is joysticks.
Preferably, two of being had of reversal valve 406 are position, a left side and right position.
Preferably, the position, a left side corresponding to reversal valve 406 is provided with one way valve and choke valve.
Preferably, the right position corresponding to reversal valve 406 only is provided with an one way valve.
According to a second aspect of the invention; A kind of hydraulic pressure manner of execution that big arm promotes and revolution is carried out simultaneously of controlling excavator 10 also is provided; Be used for control to the hydraulic actuating mechanism 400 described in the first aspect of the present invention; Wherein, When the big arm of hydraulic actuating mechanism 400 control excavators promotes and revolution when carrying out simultaneously, reversal valve 406 restriction hydraulic pumps 402 strengthen hydraulic pump 402 simultaneously and promote the hydraulic pressure that execution unit 403 provides to big arm to the hydraulic pressure that revolution action execution unit 404 provides.
According to a third aspect of the invention we, a kind of excavator 10 is provided also, its comprise at least fuselage main body 100, base 200, big arm 300 and according to a first aspect of the invention described in hydraulic actuating mechanism 400.
Through having the dam reversal valve of function of selectivity; Reduced the hydraulic pressure supply of hydraulic pump to revolution action execution unit; Thereby under the prerequisite that does not promote the hydraulic pump capacity, can more hydraulic pressure be offered big arm and promote action, make big arm promote action and have precedence over the revolution action.Thereby carrying out big arm at excavator promotes and realizes in the multiple working of action and revolution action that big arm promotes action preferential with respect to the revolution action; Can make big arm obtain hoisting velocity faster; Guarantee that whole excavator has operating speed faster, this is particularly useful for various types of tap/dip deep into operations.
Description of drawings
Fig. 1 shows the sketch map according to the excavator 10 of the embodiment of the invention;
Fig. 2 shows the functional-block diagram according to the composition structure of the hydraulic actuating mechanism 400 of the embodiment of the invention;
Fig. 3 shows the sketch map according to the composition structure of the reversal valve 406 of the 2/2-way of the embodiment of the invention; And
Fig. 4 shows the flow chart according to the basic procedure of the hydraulic pressure manner of execution of the embodiment of the invention.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, will combine accompanying drawing that specific embodiment is described in detail below.
Excavator
Referring to Fig. 1, the excavator 10 according to the embodiment of the invention is described.Fig. 1 shows the sketch map according to the excavator 10 of the embodiment of the invention.
As shown in Figure 1, excavator 10 mainly comprises fuselage main body 100, base 200, big arm 300, hydraulic actuating mechanism 400 (not shown) and scraper bowl 500 etc.Except hydraulic actuating mechanism 400, the design details of other ingredients of excavator 10, those skilled in the art can be with reference to the publication of as above mentioning " hydraulic crawler excavator ", so repeat no more at this.
In addition; Those skilled in the art it should be understood that; Under the control of hydraulic actuating mechanism 400; In order for example to carry out dredge operation such as tap/dip deep into, big arm 300 can be carried out perpendicular to the lifting of ground (horizontal plane) under the driving of for example hydraulic cylinder (hydrauliccylinder) or land and move.Simultaneously, excavate the position in order to change, fuselage main body 100 also can be carried out clockwise under the driving of revolution action execution unit or the action of the revolution counterclockwise.
Below, will the hydraulic actuating mechanism and the hydraulic pressure manner of execution that are used to control above-mentioned two actions according to the embodiment of the invention at length be described with reference to accompanying drawing.
Hydraulic actuating mechanism
With reference to figure 2, composition and operating principle according to the hydraulic actuating mechanism 400 of the embodiment of the invention are described at length.Fig. 2 shows the functional-block diagram according to the composition structure of the hydraulic actuating mechanism 400 of the embodiment of the invention.
As shown in Figure 2, hydraulic actuating mechanism 400 comprises that mainly controller 401, hydraulic pump 402, big arm promote execution unit 403, revolution action execution unit 404 and control valve 405.Here, controller 401 can adopt the control chip or the control logic circuit of various suitable type, for example PLC (PLD) etc.In addition, hydraulic pump (pump) the 402nd, the dynamical element of hydraulic system, its effect is the pressure ability that the mechanical energy of prime mover is converted to liquid, refers to the oil pump in the hydraulic system, it provides power to whole hydraulic system.The form of structure of hydraulic pump generally has gear pump, vane pump and plunger displacement pump.The operating principle of hydraulic pump is the variation that motion brings pump chamber, thereby compressed fluid makes fluid have the pressure ability.
In addition, it can be the actuator of various suitable type with revolution action execution unit 404 that big arm promotes execution unit 403, and it can convert hydraulic pressure into the hydraulic actuator of mechanical energy, for example hydraulic motor, hydraulic cylinder, hydraulic pressure rotary actuator etc.About the other technologies information of hydraulic pressure execution unit, also can be with reference to " hydraulic pressure and Pneumatic Transmission ", Chemical Industry Press publishes, the Li Jianrong work, in January, 2007, its full content all is included in here as a reference.
In an embodiment of the present invention, the reversal valve 406 in the control valve 405 is the reversal valves of 2/2-way that are controlled the hydraulic pilot control signal control of device 401.Certainly, the reversal valve 406 in the control valve 405 can also be other control valves with selectivity commutation function.Have the element that is used for controlling fluid pressure, flow and direction in the hydraulic drive, wherein controlled pressure be called pressure-control valve, the control flow be called flow control valve, the switching of control valve and the flow direction be called directional control valve.Overflow valve is a kind of as pressure-control valve, can controlled hydraulic system when reaching set pressure, keep steady state.Directional control valve is divided into one way valve and reversal valve by purposes.One way valve only allows liquid (oil) unidirectional connection in pipeline, oppositely promptly cuts off; Reversal valve then can change the switching relation between the different pipelines, wherein counts two of branches, three etc. according to the operating position of spool in valve body; Divide two logical, threeway, four-way etc. according to the port number of being controlled; According to the spool type of drive divide manual, motor-driven, electronic, surge etc.
Fig. 3 shows the sketch map according to the composition structure of the reversal valve 406 of the 2/2-way of the embodiment of the invention.As shown in Figure 3, in the hydraulic actuating mechanism 400 according to the embodiment of the invention, the reversal valve 406 in the control valve 405 has 2/2-way, wherein two positions, a left side and right position that are meant valve here.Concrete, also please refer to Fig. 3, specify composition structure according to the 2/2-way reversal valve 406 of the embodiment of the invention, wherein, be provided with an one way valve and a choke valve corresponding to the position, a left side of reversal valve 406; And only be provided with an one way valve corresponding to the right position of reversal valve 406.
In addition, as shown in Figure 3, have control end in the left side of reversal valve 406, be used to receive the hydraulic pilot control signal of self-controller 401, so that being gone up the choke valve that is provided with, the position, a left side of reversal valve 406 carries out flow-control.
Certainly, it will be appreciated by persons skilled in the art that here the number of one way valve and choke valve do not done any restriction that it is plural valve that quantity also can be set as required.In addition, only be illustrative about the left side position of reversal valve 406 and the setting of right position, under teaching of the present invention, position, the also interchangeable left side of those skilled in the art with right on setting, and increase or modification can be carried out the valve of other functions.
Below, will the hydraulic pressure manner of execution that realized through according to the hydraulic actuating mechanism 400 of the embodiment of the invention be described with reference to figure 4.
The hydraulic pressure manner of execution
Fig. 4 shows the flow chart according to the basic procedure of the hydraulic pressure manner of execution of the embodiment of the invention.The hydraulic pressure manner of execution that is realized through above-mentioned hydraulic actuating mechanism of the present invention 400 with special construction consists essentially of the following step:
Step S1, hydraulic pump 402 provides suitable hydraulic pressure through control valve 405 to each execution unit, with actions such as the lifting that drives the moving of excavator 10, revolution, big arm or landing;
Step S2 judges whether controller 401 has sent the control signal of action of execution revolution simultaneously and big arm lifting (landing) action;
Step S3; When needs carry out simultaneously revolution action and big arm promote (landing) move and by controller (joystick) 401 via control bus when control valve 405 sends the hydraulic pilot control signal; The hydraulic pressure (oil pressure) that reversal valve 406 in the control valve 405 provides to revolution action execution unit 404 via its left side restriction hydraulic pump 402 promotes the hydraulic pressure (oil pressure) that execution unit 403 provides via its right increasing hydraulic pump 402 to big arm simultaneously; And
Step S4 when needs finish the composite move of revolution and big arm lifting (landing), sends end signal by controller (joystick) 401 to control valve 405.
To sum up; Through having the dam reversal valve of function of selectivity; Reduced the hydraulic pressure supply of hydraulic pump, promoted action, made big arm promote action and have precedence over the revolution action thereby under the prerequisite of the capacity that does not promote hydraulic pump, can more hydraulic pressure be offered big arm to revolution action execution unit.Thereby carrying out big arm at excavator promotes and realizes in the multiple working of action and revolution action that big arm promotes action preferential with respect to the revolution action; Can make big arm obtain hoisting velocity faster; Guarantee that whole excavator has operating speed faster, this is particularly useful for various types of tap/dip deep into operations.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (4)
1. the big arm of a control excavator (10) promotes and turns round the hydraulic actuating mechanism that carries out simultaneously; Said excavator (10) comprises fuselage main body (100), base (200), big arm (300) and hydraulic actuating mechanism (400) at least; Said hydraulic actuating mechanism (400) comprises that at least controller (401), hydraulic pump (402), big arm promote execution unit (403), revolution action execution unit (404) and control valve (405); It is characterized in that said control valve (405) also comprises a reversal valve (406) by the 2/2-way of the hydraulic pilot control signal control of said controller (401), two that said reversal valve had is position, a left side and right position; Position, a left side corresponding to said reversal valve; Be provided with one way valve and choke valve, the right position corresponding to said reversal valve only is provided with an one way valve;
Wherein, When the big arm of said hydraulic actuating mechanism (400) control excavator promotes and revolution when carrying out simultaneously; The hydraulic pressure that the left side position said hydraulic pump of restriction (402) of the reversal valve (406) of said control valve (405) through wherein provides to said revolution action execution unit (404), the hydraulic pressure that said hydraulic pump (402) provides to said big arm lifting execution unit (403) is strengthened in the right position of the reversal valve (406) through wherein simultaneously.
2. hydraulic actuating mechanism according to claim 1 is characterized in that, said controller (401) is a joystick.
3. the hydraulic pressure manner of execution that big arm promotes and revolution is carried out simultaneously of a control excavator (10) is used for realizing the control to the described hydraulic actuating mechanism of claim 1 (400), it is characterized in that,
When the big arm of said hydraulic actuating mechanism (400) control excavator promotes and revolution when carrying out simultaneously; The hydraulic pressure that the left side position said hydraulic pump of restriction (402) of the reversal valve (406) of said control valve (405) through wherein provides to said revolution action execution unit (404), the hydraulic pressure that said hydraulic pump (402) provides to said big arm lifting execution unit (403) is strengthened in the right position of the reversal valve (406) through wherein simultaneously.
4. an excavator (10), it comprises fuselage main body (100), base (200), big arm (300) and hydraulic actuating mechanism as claimed in claim 1 (400) at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010003396A CN102127918B (en) | 2010-01-19 | 2010-01-19 | Hydraulic execution mechanism, hydraulic execution method and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010003396A CN102127918B (en) | 2010-01-19 | 2010-01-19 | Hydraulic execution mechanism, hydraulic execution method and excavator |
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| Publication Number | Publication Date |
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| CN102127918A CN102127918A (en) | 2011-07-20 |
| CN102127918B true CN102127918B (en) | 2012-09-05 |
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| CN201010003396A Expired - Fee Related CN102127918B (en) | 2010-01-19 | 2010-01-19 | Hydraulic execution mechanism, hydraulic execution method and excavator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704515A (en) * | 2012-06-26 | 2012-10-03 | 上海三一重机有限公司 | Priority control system and method of hydraulic excavator and excavator |
| CN104674866A (en) * | 2015-01-30 | 2015-06-03 | 福建农林大学 | Vibration excavator adjustable in amplitude and frequency |
| CN112211866B (en) * | 2020-09-17 | 2023-01-06 | 中冶宝钢技术服务有限公司 | Big arm control loop |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129964A (en) * | 1994-06-28 | 1996-08-28 | 日立建机株式会社 | Hydraulic circuit apparatus for hydraulic excavators |
| CN101078225A (en) * | 2006-05-23 | 2007-11-28 | 沃尔沃建造设备控股（瑞典）有限公司 | Apparatus for increasing operation speed of boom on excavators |
| CN101532298A (en) * | 2007-09-30 | 2009-09-16 | 赵驰宇 | Device for increasing lifting power of lifting arms of engineering machinery |
-
2010
- 2010-01-19 CN CN201010003396A patent/CN102127918B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129964A (en) * | 1994-06-28 | 1996-08-28 | 日立建机株式会社 | Hydraulic circuit apparatus for hydraulic excavators |
| CN101078225A (en) * | 2006-05-23 | 2007-11-28 | 沃尔沃建造设备控股（瑞典）有限公司 | Apparatus for increasing operation speed of boom on excavators |
| CN101532298A (en) * | 2007-09-30 | 2009-09-16 | 赵驰宇 | Device for increasing lifting power of lifting arms of engineering machinery |
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| CN102127918A (en) | 2011-07-20 |
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Granted publication date: 20120905 Termination date: 20170119 |