CN104235087B - The control system of drilling bucket, method and piling machinery - Google Patents
The control system of drilling bucket, method and piling machinery Download PDFInfo
- Publication number
- CN104235087B CN104235087B CN201410354496.2A CN201410354496A CN104235087B CN 104235087 B CN104235087 B CN 104235087B CN 201410354496 A CN201410354496 A CN 201410354496A CN 104235087 B CN104235087 B CN 104235087B
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic
- circuit
- wing
- valve
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses the control system of a kind of drilling bucket, method and piling machinery, the control system of this drilling bucket, for control have expand the wing drilling bucket, including hydraulic pump, reversal valve and for drive expand the wing driving oil cylinder；Hydraulic pump, reversal valve and driving oil cylinder pass sequentially through hydraulic circuit and connect, and drive oil cylinder to be mechanically connected with expanding the wing；Hydraulic oil is selectively inputted to rod chamber and the rodless cavity driving oil cylinder by hydraulic pump by reversal valve, is used for driving the expansion span open or shrink；Effusion meter it is also associated with, for measuring the hydraulic fluid flow rate in hydraulic circuit on hydraulic circuit；Effusion meter connects Programmable Logic Controller, calculates the expanded angle expanding the wing according to the hydraulic fluid flow rate of flowmeter survey.The present invention is by the hydraulic fluid flow rate in flowmeter survey hydraulic circuit, and calculates the expanded angle expanding the wing accordingly, it is allowed to operator will appreciate that the real-time expanded angle expanding the wing, facilitates operator's control to the expansion wing, improves the efficiency of construction.
Description
Technical field
The present invention relates to engineering machinery field, particularly to control system, method and the stake work machine of a kind of drilling bucket
Tool.
Background technology
In infrastructure project, pile foundation construction is particularly significant.And prefabricated pile is very universal in infrastructure project,
Hollow concrete prefabricated pile pile sinking process in prefabricated pile uses the method for squeezing into, plunging or middle pick implantation mostly.
And current middle pick implantation uses and has the drilling bucket expanding the wing, its function is relatively easy, can only meet construction
During basic demand.Existing have the drilling bucket expanding the wing by joint jointed rod, and drilling rod is arranged
Hydraulic circuit, main frame is provided with hydraulic circuit control unit, realizes hydraulic pressure in hydraulic circuit by control unit
The commutation of oil, and then realize expanding the expansion of the wing and packing up, measure hydraulic circuit by mechanical pressure gauge simultaneously
Force value to judge to expand the wing the most fully deployed or pack up completely.
But, in actual mechanical process, only judge to expand the open and close two states of the wing with force value, right
Being inadequate for operator, operator need to understand the real-time expanded angle expanding the wing more accurately,
Open so that being precisely controlled the expansion span or pack up, improve accuracy and the efficiency of pile hole construction.
Summary of the invention
In view of this, the present invention proposes the control system of a kind of drilling bucket, method and piling machinery, it is possible to control
There is the drilling bucket expanding the wing, it is allowed to operator can accurately understand the real-time expanded angle expanding the wing, convenient
Operator are precisely controlled expanding the wing, improve accuracy and the efficiency of pile hole construction.
On the one hand, the invention provides the control system of a kind of drilling bucket, for controlling the drilling bucket with the expansion wing,
Including hydraulic pump, reversal valve and expand, for driving, the driving oil cylinder that the span is opened or shunk；
Described hydraulic pump, described reversal valve and described driving oil cylinder pass sequentially through hydraulic circuit connect, described in drive
Dynamic oil cylinder is mechanically connected with the described expansion wing；Described hydraulic pump is by described reversal valve by hydraulic oil selectively
The rod chamber of input extremely described driving oil cylinder and rodless cavity, be used for driving the expansion span open or shrink；
It is also associated with effusion meter, for measuring the hydraulic fluid flow rate in described hydraulic circuit on described hydraulic circuit；
Described effusion meter connects Programmable Logic Controller, calculates according to the hydraulic fluid flow rate of described flowmeter survey
The expanded angle of the described expansion wing.
Further, described effusion meter is connected on the oil return circuit in described hydraulic circuit by switch valve；
Described oil return circuit is also associated with relief valve, and described relief valve is in parallel with described effusion meter.
Further, described switch valve is electromagnetic switch valve, the control end of described electromagnetic switch valve with described can
Programmable controller connects；
Described relief valve is electromagnetic valve, and the control end of described electromagnetic valve is connected with described Programmable Logic Controller.
Further, described reversal valve is three position four-way directional control valve, and the actuator port of described reversal valve leads to respectively
Cross the first oil circuit and the second oil circuit is connected to rodless cavity and the rod chamber of described driving oil cylinder, described reversal valve
Oil-in connects described hydraulic pump；
The oil return opening of described reversal valve connects described effusion meter, and described reversal valve by described switch valve
Oil return opening is also connected with described relief valve；Or,
The oil return opening of described reversal valve is connected directly to fuel tank, and described relief valve includes the first relief valve and second
Relief valve, described first relief valve is connected directly to described first oil circuit, and described second relief valve is directly connected to
To described second oil circuit.
Further, the oil-in of described reversal valve connects pressure transducer, described pressure transducer and institute
State Programmable Logic Controller to connect.
On the other hand, the present invention also provides for the control method of a kind of drilling bucket, for controlling the brill with the expansion wing
Bucket launches or shrinks the described expansion wing, including:
Utilize to drive and expand the span described in hydraulic oil cylinder driving and open or shrink, and measure and be connected with described driving oil cylinder
Hydraulic fluid flow rate in hydraulic circuit；
The expanded angle of the described expansion wing is calculated according to described hydraulic fluid flow rate.
Further, measure the hydraulic fluid flow rate in the hydraulic circuit that is connected with described driving oil cylinder particularly as follows:
Measure the hydraulic fluid flow rate from the oil return circuit of described driving oil cylinder effluent force feed；
Further, measuring from the oil return circuit of described driving oil cylinder effluent force feed before hydraulic fluid flow rate,
Also include the pressure discharge operations that described oil return circuit is carried out predetermined hold-time.
Further, by connection traffic meter on described oil return circuit to measure hydraulic pressure in described oil return circuit
Oil flow, and switch valve is set between described effusion meter and described oil return circuit；
By connection relief valve on described oil return circuit to carry out described pressure discharge operations, described relief valve and institute
State effusion meter, the parallel connection of described switch valve；
Further, by arranging Programmable Logic Controller to automatically control described switch valve and the switch of described relief valve.
Further, before described oil return circuit is carried out the pressure discharge operations of predetermined hold-time, also include
Measure the force value of oil-feed oil circuit in described hydraulic circuit, if described force value is beyond service pressure value,
Described oil return circuit is carried out the pressure discharge operations of predetermined hold-time, otherwise, directly measures and drive oil from described
Hydraulic fluid flow rate in the oil return circuit of cylinder effluent force feed.
Another aspect, the present invention also provides for a kind of piling machinery, is provided with and has the drilling bucket expanding the wing, described
Piling machinery is additionally provided with the control system of as above drilling bucket described in any one, be used for controlling described in there is expansion
The drilling bucket of the big wing.The expansion span that the control system of the drilling bucket of the present invention controls drilling bucket by hydraulic system is opened
And contraction, by the hydraulic fluid flow rate in flowmeter survey hydraulic circuit, and calculate the exhibition expanding the wing accordingly
Angle of release degree, it is allowed to operator can accurately understand the real-time expanded angle expanding the wing, facilitates operator couple
Expand the control of the wing, improve the efficiency of pile hole construction.
The control system of the drilling bucket of the present invention, further preferably by arranging relief valve, utilizes relief valve and effusion meter
Cooperating, it is to avoid the hydraulic oil flow numerical quantity of oil pipe expansion effects flowmeter survey, and then avoid counting accordingly
The expansion wing angle generation deviation calculated, facilitates operator to expanding more being precisely controlled of the wing, improves stake holes
The accuracy of construction and efficiency.
The control method of the drilling bucket of the present invention is by measuring the hydraulic fluid flow rate in hydraulic circuit, and counts accordingly
Calculate the expanded angle expanding the wing, it is allowed to the real-time expanded angle that operator can accurately understand the expansion wing is convenient
Operator's control to the expansion wing, improves the efficiency of pile hole construction；Further preferably by measuring hydraulic oil flow
Before Liang, oil return circuit is carried out pressure discharge operations, it is to avoid the hydraulic oil flow numerical quantity that oil pipe expansion effects is measured, enter
And avoid the expansion wing angle generation deviation calculated accordingly, facilitate operator that the expansion wing is precisely controlled,
Improve accuracy and the efficiency of pile hole construction.
The piling machinery of the present invention is provided with the control system of above-mentioned drilling bucket, the most also has identical technology effect
Really, repeat no more.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.At accompanying drawing
In:
The structural representation of a kind of drilling bucket control system that Fig. 1 provides for the embodiment of the present invention；
Fig. 2 show the flow chart of a kind of drilling bucket control method that the embodiment of the present invention provides.
Description of reference numerals
1, hydraulic pump, 2, reversal valve, 3, drive oil cylinder, 4, effusion meter, 5, fuel tank, 6, switch valve,
7, relief valve, 8, pressure transducer, the 11, first oil circuit, the 12, second oil circuit.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment
Can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The structural representation of a kind of drilling bucket control system that Fig. 1 provides for the embodiment of the present invention；Fig. 2 show
The flow chart of a kind of drilling bucket control method that the embodiment of the present invention provides.
It is illustrated in figure 1 the structural representation of the control system of a kind of drilling bucket that the embodiment of the present invention provides, should
Control system is for controlling the drilling bucket with the expansion wing, and this control system includes hydraulic pump 1, reversal valve 2 and
The driving oil cylinder 3 that the span is opened or shunk is expanded, hydraulic pump 1, reversal valve 2 and driving oil cylinder 3 for driving
Pass sequentially through hydraulic circuit to connect, concrete as it can be seen, hydraulic pump 1 input connects hydraulic oil container 5, defeated
Going out end and be connected to the oil-in of reversal valve 2, what the actuator port of reversal valve 2 was connected to drive oil cylinder 3 has bar
Chamber and rodless cavity, drive the piston rod of oil cylinder 3 for being mechanically connected with the expansion wing, expand the span with driving and open
Or shrink；As it is shown in figure 1, be also associated with effusion meter 4 on above-mentioned hydraulic circuit, it is used for measuring hydraulic oil
Hydraulic fluid flow rate in road, effusion meter 4 is also associated with Programmable Logic Controller (not shown), and it can root
The hydraulic fluid flow rate measured according to effusion meter 4 calculates the expanded angle expanding the wing.
The control system of the drilling bucket of the present invention is driven by hydraulic oil in hydraulic circuit and drives oil cylinder 3, Jin Eryou
Oil cylinder 3 is driven to drive the expansion span open and shrink, and by arranging effusion meter 4 on hydraulic circuit to measure
Hydraulic fluid flow rate in hydraulic circuit, the hydraulic fluid flow rate that effusion meter 4 is measured is converted into the signal of telecommunication and is transferred to
Programmable Logic Controller, Programmable Logic Controller calculates expansion wing expanded angle according to the hydraulic fluid flow rate measured,
Operator can be made accurately to understand the real-time expanded angle expanding the wing, facilitate operator to carry out expanding the wing
Control, improve accuracy and the efficiency of pile hole construction.
Need exist for explanation, first, although in above-described embodiment, the control system of drilling bucket uses and drives oil
Cylinder 3 carries out being mechanically connected and drive the expansion span open and shrink with expanding the wing it should be appreciated that, this
The protection domain of invention should not necessarily be limited by driving oil cylinder 3, if use other forms in hydraulic circuit performs unit
Part (such as hydraulic motor) drives the expansion wing to fall within protection scope of the present invention；Secondly, above-mentioned enforcement
In example, Programmable Logic Controller is calculated the expanded angle expanding the wing according to hydraulic fluid flow rate, and the present invention is to compiling
The concrete calculation of range controller does not limits, for example, it is possible to set a concrete computing formula, and can
Hydraulic fluid flow rate is substituted into computing formula and calculates the expanded angle expanding the wing by programmable controller, it is also possible to can compile
The expanded angle mapping table presetting a hydraulic fluid flow rate in range controller and expand the wing, the most able to programme
Controller finds the expanded angle that expand the wing corresponding with this value according to the value of hydraulic fluid flow rate.
In current hydraulic system, hydraulic circuit generally use sebific duct as oil pipe, therefore, in work process
In, when the pressure ratio of hydraulic system is bigger, can cause hydraulic circuit there will be sebific duct swelling, this
The value of the hydraulic fluid flow rate of flowmeter survey in hydraulic circuit can be caused certain impact by the situation of kind, and then causes
The expansion wing expanded angle inaccuracy calculated.In order to solve this problem, promote the control system meter of drilling bucket
The precision expanding wing expanded angle calculated, above-described embodiment further preferably connects a pressure release in hydraulic circuit
Valve, to discharge the hydraulic oil that sebific duct expansion in hydraulic circuit is comprised in advance, it is to avoid cause effusion meter
Impact, the measurement of effusion meter can be judged and correction by Programmable Logic Controller according to pressure sensor value simultaneously,
Such as: when force value exceedes working pressure, can the most frequently judge to drive whether cylinder piston rod arrives oil cylinder end
Portion, thus the data gathered are modified, because flow is datum when piston rod arrives end, pass through
Gather number to carry out contrasting with datum, can be corrected gathering data.
Still as a example by shown in Fig. 1, reversal valve 2 is preferably three-position four-way electromagnetic directional valve, entering of reversal valve 2
Hydraulic fluid port is connected to hydraulic pump 1, and two actuator ports of reversal valve 2 are connected to drive by the first oil circuit 11 respectively
The rodless cavity of oil cylinder 3, is connected to drive the rod chamber of oil cylinder 3 by the second oil circuit 12；Returning of reversal valve 2
Hydraulic fluid port passes through a switch valve 6 connection traffic meter 4, and this switch valve 6 is preferably electromagnetic switch valve, and its
Control end to be connected with Programmable Logic Controller, accept the control of Programmable Logic Controller.Meanwhile, reversal valve 2 return
Hydraulic fluid port is also connected with relief valve 7, and the oil circuit that this relief valve 7 is formed with switch valve 6, effusion meter 4 is in parallel, and
Preferably this relief valve 7 is electromagnetic valve, and it controls end and is connected with Programmable Logic Controller, accepts Programmable Logic Controller
Control.
During work, hydraulic oil enters reversal valve 2 through hydraulic pump 1 from the oil-in of reversal valve 2, if commutation
Valve 2 is operated in left position, then hydraulic oil from actuator port through the first oil circuit 11 enter drive oil cylinder 3 without bar
Chamber, promotes piston rod to be displaced outwardly, and sets the now expansion wing and launches accordingly, correspondingly, drives oil cylinder 3
Hydraulic oil in rod chamber flows into reversal valve 2, Controlled by Programmable Controller switch valve 6 dozens through the second oil circuit
Opening, hydraulic oil after switch valve 6 flows through effusion meter 4, flows back to fuel tank 5 from the oil return opening of reversal valve 2,
Now the hydraulic fluid flow rate in hydraulic circuit measured by effusion meter 4, i.e. flows out in the rod chamber driving oil cylinder 3
The amount of hydraulic oil, thus calculate the piston rod stroke driving oil cylinder 3, Jin Erji according to this hydraulic fluid flow rate
Calculate the expanded angle expanding the wing of correspondence, and the result calculated is notified operator, so, operation
The real-time expanded angle expanding the wing can be accurately understood with personnel.
When driving the rod chamber oil-feed of oil cylinder 3, operation principle is similar, repeats no more.Need explanation
It is, owing in the cylinder of the rod chamber and rodless cavity that drive oil cylinder 3, sectional area is different, thus effusion meter 4
Metering rod chamber flows out identical hydraulic fluid flow rate with rodless cavity, and the stroke of corresponding piston rod is different, because of
This, calculate time should treat with a certain discrimination, can by the commutation of reversal valve 2 identify rod chamber fuel-displaced or
Rodless cavity is fuel-displaced, thus selects different calculations, or select different mapping tables search with
The expansion wing expanded angle that hydraulic fluid flow rate is corresponding.
But, in real work, open due to the expansion span and be obstructed, thus drive and expand hydraulic pressure when the span is opened
In oil circuit, pressure is excessive, or, when expanding that the wing is fully deployed or during fully collapsed position, hydraulic circuit is still
Fuel feeding, it will usually cause oil-feed oil circuit (during such as reversal valve 2 left, the first oil circuit 11 is oil-feed oil circuit)
Oil pipe expands, and after reversal valve 2 commutates, oil-feed oil circuit (the i.e. first oil circuit 11) originally becomes oil return
Oil circuit, a part of hydraulic oil causing oil pipe to expand during oil return first flows through effusion meter 4, and now effusion meter 4 is surveyed
The hydraulic fluid flow rate of amount is added flow, and this flow stroke to driving oil cylinder 3 is inoperative, i.e. to expansion
The expanded angle of the big wing does not produce impact；When oil pipe returns to normal, drive the just warp of the hydraulic oil in oil cylinder 3
Oil return circuit flows out, and the hydraulic fluid flow rate that effusion meter 4 is now measured is normality flow, is owing to driving oil cylinder
The stroke of 3 changes and flows out, i.e. relevant to expanding wing expanded angle.Expand discounting for oil pipe
The impact of added flow produced, then the expanded angle expanding the wing calculated arises that deviation, and this
Relief valve 7 in bright above preferred embodiment can solve this problem.
During work, hydraulic pump 1 is supplied in the rodless cavity driving oil cylinder 3 by reversal valve the 2, first oil circuit 11
Oil, causes the oil pipe of the first oil circuit 11 to expand during being somebody's turn to do for a certain reason；Need to expand wing adverse movement
Time, reversal valve 2 commutates, and oil-feed oil circuit (the i.e. first oil circuit 11) originally becomes oil return circuit, now,
Programmable Logic Controller first controls relief valve 7 and opens, and controls switch valve 6 simultaneously and closes, i.e. in oil return circuit
Hydraulic oil first passes through relief valve 7 and flows back to fuel tank 5, i.e. closes relief valve 7, open out simultaneously after the scheduled time
Close valve 6, now hydraulic pump 1 work to reversal valve 2 commutate after oil-feed oil circuit fuel feeding, effusion meter 4 is measured
The hydraulic fluid flow rate that oil return circuit flows out.Wherein, the value of the scheduled time should be preset as the case may be, its
It is to a part of hydraulic oil causing oil pipe to expand in oil return circuit be flowed back to oil in advance within this time period
Case 5, it is to avoid it produces error directly through effusion meter 4, the hydraulic fluid flow rate causing effusion meter 4 to measure, because of
This, this scheduled time is typically the shortest time.The preferred embodiment is frequently encountered by for reality
Problem, arranges the hydraulic fluid flow rate that effusion meter 4 measured by relief valve 7 and is corrected so that the control of this drilling bucket
The expanded angle expanding the wing that system-computed processed goes out is more accurate.
In order to coordinate the work of relief valve 7, the preferred embodiment also set before the oil-in of reversal valve 2
Putting a pressure transducer 8, pressure transducer 8 is connected with Programmable Logic Controller, the force value of detection is passed
It is handed to Programmable Logic Controller, when the pressure of the oil-feed oil circuit of pressure transducer 8 detection exceeds service pressure
Time, then it is considered as the phenomenon that oil-feed oil circuit occurs that oil pipe expands, then commutates at reversal valve 2, part oil-feed oil circuit
When (the such as first oil circuit 11) becomes oil return circuit, Programmable Logic Controller opens relief valve 7 scheduled time,
Simultaneously close off switch valve 6, and after the scheduled time, close relief valve 7, open switch valve 6 simultaneously.Certainly,
This pressure transducer 8 detection more than a predetermined value time, this predetermined value be more than service pressure value because
Generally there will be this kind of situation when expanding the wing and fully opening or pack up completely, therefore may determine that as now expanding
The big wing fully opens or packs up completely, and the hydraulic fluid flow rate that effusion meter 4 can be detected by Programmable Logic Controller is real
Time be corrected to be worth accordingly, in order to the expansion wing expanded angle calculated with fully open or pack up relative completely
Should.
In addition it should be noted that effusion meter 4 and relief valve 7 in the preferred embodiment are provided in oil return
On oil circuit, to measure the hydraulic fluid flow rate in oil return circuit, carry out flux modification by relief valve 7 simultaneously,
But the connected mode of the two is not limited to be connected at the oil return opening of reversal valve 2 in diagram, it is contemplated that relief valve
The 7 targeted oil-feed oil circuits before and after reversal valve 2 commutates that are mainly become the part generation oil pipe of oil return circuit
The problem expanded, therefore, in other embodiments, it is also possible on the first oil circuit 11 and the second oil circuit 12
One relief valve 7 of each connection, after reversal valve 2 commutates, the relief valve 7 controlled respectively on corresponding oil circuit enters
Row pressure release.Corresponding to this, effusion meter 4 and switch valve 6 are referred to the mode of above preferred embodiment
It is connected to the oil return opening of reversal valve 2；In addition, effusion meter 4 and switch valve 6 can also be correspondingly connected to
First oil circuit 11 and the second oil circuit 12, certainly, when so connecting, preferably by Controlled by Programmable Controller
The effusion meter 4 connected on the oil circuit used as oil return circuit in one oil circuit 11 and the second oil circuit 12 is measured
Oil mass, repeats no more.
The control system of the drilling bucket in above preferred embodiment of the present invention, controls drilling bucket by hydraulic system
Expand the span open and shrink, measured the hydraulic fluid flow rate in hydraulic circuit by effusion meter 4, and count accordingly
Calculate the expanded angle expanding the wing, it is allowed to operator can accurately understand the real-time expanded angle expanding the wing；Also
Preferably by arranging relief valve 7, utilize the cooperating of relief valve 7 and effusion meter 4, it is to avoid oil pipe expands
Affect the hydraulic oil flow numerical quantity that effusion meter 4 is measured, and then avoid the expansion wing angle calculated accordingly to occur
Deviation, facilitates operator to be precisely controlled expanding the wing, improves accuracy and the efficiency of pile hole construction.
Embodiments of the invention also provide for a kind of piling machinery, and it is provided with has the drilling bucket expanding the wing, also sets
Being equipped with the control system of the drilling bucket that above preferred embodiment provides, therefore, this piling machinery has above-mentioned equally
Effect, repeat no more.It will be apparent to a skilled person that this piling machinery can be churning driven
The equipment such as mechanical, electrical Hydraulic pile-driving machine.
The embodiment of the present invention also provides for the control method of a kind of drilling bucket, for controlling the drilling bucket exhibition with the expansion wing
Open or shrink the expansion wing, corresponding with the control system embodiment of above-mentioned drilling bucket, as in figure 2 it is shown, this control
Method includes: utilizes and drives the hydraulic oil cylinder driving expansion span open or shrink, and measures and drive the liquid that oil cylinder is connected
Hydraulic fluid flow rate in force feed road；Then, the described hydraulic fluid flow rate obtained according to measurement calculates and expands the wing
Expanded angle.
Oil cylinder 3 can be driven to drive the expansion span to open or receive in conjunction with the description of reference above-described embodiment and Fig. 1
Contracting, connects in the hydraulic circuit being attached thereto and has effusion meter 4, utilize effusion meter 4 to measure corresponding hydraulic circuit
In hydraulic fluid flow rate, thus accordingly calculate expand the wing expanded angle.This control method can allow for operation
Personnel accurately understand the real-time expanded angle expanding the wing, facilitate it to be controlled expanding the wing, improve stake holes and execute
Work efficiency rate.
Further, preferably, this control method is measured from the oil return driving oil cylinder effluent force feed
Hydraulic fluid flow rate in oil circuit, and before measuring the hydraulic fluid flow rate of oil return circuit, also to oil return circuit
Carry out the pressure discharge operations of the scheduled time, to avoid the oil cylinder mentioned in above-described embodiment to expand final calculating
Expand wing expanded angle to cause a deviation.Certainly, corresponding with above-mentioned control system embodiment, effusion meter 4 leads to
Cross a switch valve 6 to be connected on oil return circuit, and oil return circuit connect a relief valve 7, relief valve 7
It is connected in parallel on oil return circuit with effusion meter 4, switch valve 6, in order to when relief valve 7 carries out pressure discharge operations,
Effusion meter 4 does not carries out hydraulic fluid flow rate to oil return circuit and measures.Additionally, the setting of the scheduled time is with upper
Arranging in one embodiment is identical, it is intended to utilize within this time relief valve 7 allow cause oil pipe to expand extra
Hydraulic oil flows out in advance.
Further, before oil return circuit carries out the pressure discharge operations of predetermined hold-time, also include surveying
The force value of oil-feed oil circuit in amount hydraulic circuit, in order to for whether carrying out described pressure discharge operations offer basis for estimation,
If the force value of detection is beyond service pressure value, then it is considered as that oil pipe swelling occurs, therefore, is changing
After valve commutates, then oil return circuit is carried out the pressure discharge operations of predetermined hold-time, otherwise, is considered as not going out
Existing oil pipe swelling, can directly measure hydraulic fluid flow rate in oil return circuit, save the step of pressure discharge operations.
Additionally, if the force value of detection is beyond a predetermined value, this predetermined value is bigger than service pressure value,
May determine that the expansion wing has reached fully expanded position or fully collapsed position, and expand the wing fully deployed or
The hydraulic fluid flow rate in hydraulic circuit corresponding when shrinking completely is a particular value, at this point it is possible to the most real
The hydraulic fluid flow rate that border is measured be how many, is accordingly to be regarded as hydraulic fluid flow rate fully deployed or shrink completely with the expansion wing
Time hydraulic fluid flow rate particular value corresponding, thus the value of the hydraulic fluid flow rate detected is corrected.Reference
The control system embodiment of above-mentioned drilling bucket, can be by arranging a pressure transducer 8 on oil-feed oil circuit
Force value in detection oil circuit.
The control method embodiment of the above-mentioned drilling bucket of the present invention, by measuring the hydraulic fluid flow rate in hydraulic circuit,
And calculating the expanded angle expanding the wing accordingly, it is allowed to operator can accurately understand the real-time exhibition expanding the wing
Angle of release degree；Further preferably by oil return circuit being carried out pressure discharge operations before measuring hydraulic fluid flow rate, it is to avoid oil pipe
The hydraulic oil flow numerical quantity that expansion effects is measured, and then avoid the expansion wing angle generation deviation calculated accordingly,
Facilitate operator to be precisely controlled expanding the wing, improve accuracy and the efficiency of pile hole construction.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (8)
1. a control system for drilling bucket, for controlling the drilling bucket with the expansion wing, it is characterised in that include
Hydraulic pump, reversal valve and expand the span driving oil cylinder opening or shrink for driving；
Described hydraulic pump, described reversal valve and described driving oil cylinder pass sequentially through hydraulic circuit connect, described in drive
Dynamic oil cylinder is mechanically connected with the described expansion wing；Described hydraulic pump is by described reversal valve by hydraulic oil selectively
The rod chamber of input extremely described driving oil cylinder and rodless cavity, be used for driving the expansion span open or shrink；
It is also associated with effusion meter, for measuring the hydraulic fluid flow rate in described hydraulic circuit on described hydraulic circuit；
Described effusion meter connects Programmable Logic Controller, calculates according to the hydraulic fluid flow rate of described flowmeter survey
The expanded angle of the described expansion wing；
Described effusion meter is connected on the oil return circuit in described hydraulic circuit by switch valve；
Described oil return circuit is also associated with relief valve, and described relief valve is in parallel with described effusion meter.
The control system of drilling bucket the most according to claim 1, it is characterised in that described switch valve is electricity
Magnetic switch valve, the control end of described electromagnetic switch valve is connected with described Programmable Logic Controller；
Described relief valve is electromagnetic valve, and the control end of described electromagnetic valve is connected with described Programmable Logic Controller.
The control system of drilling bucket the most according to claim 2, it is characterised in that described reversal valve is three
Position and four-way reversing valve, the actuator port of described reversal valve is connected to institute by the first oil circuit and the second oil circuit respectively
Stating rodless cavity and the rod chamber driving oil cylinder, the oil-in of described reversal valve connects described hydraulic pump；
The oil return opening of described reversal valve connects described effusion meter, and described reversal valve by described switch valve
Oil return opening is also connected with described relief valve；Or,
The oil return opening of described reversal valve connects described effusion meter by described switch valve, and described relief valve includes the
One relief valve and the second relief valve, described first relief valve is connected directly to described first oil circuit, and described second
Relief valve is connected directly to described second oil circuit.
The control system of drilling bucket the most according to claim 3, it is characterised in that entering of described reversal valve
Hydraulic fluid port connects has pressure transducer, described pressure transducer to be connected with described Programmable Logic Controller.
5. a control method for drilling bucket, expands the drilling bucket expansion of the wing for controlling to have or shrinks described expansion
The wing, it is characterised in that including:
Utilize to drive and expand the span described in hydraulic oil cylinder driving and open or shrink, and measure and be connected with described driving oil cylinder
Hydraulic fluid flow rate in hydraulic circuit；
The expanded angle of the described expansion wing is calculated according to described hydraulic fluid flow rate；Measure with described driving oil cylinder even
Hydraulic fluid flow rate in the hydraulic circuit connect particularly as follows:
Measure the hydraulic fluid flow rate from the oil return circuit of described driving oil cylinder effluent force feed；
Further, measuring from the oil return circuit of described driving oil cylinder effluent force feed before hydraulic fluid flow rate,
Also include the pressure discharge operations that described oil return circuit is carried out predetermined hold-time.
The control method of drilling bucket the most according to claim 5, it is characterised in that by described oil return
On oil circuit, connection traffic meter is to measure hydraulic fluid flow rate in described oil return circuit, and at described effusion meter and described
Switch valve is set between oil return circuit；
By connection relief valve on described oil return circuit to carry out described pressure discharge operations, described relief valve and institute
State effusion meter, the parallel connection of described switch valve；
Further, by arranging Programmable Logic Controller to automatically control described switch valve and the switch of described relief valve.
The control method of drilling bucket the most according to claim 6, it is characterised in that to described oil return oil
Before road carries out the pressure discharge operations of predetermined hold-time, also include measuring oil-feed oil circuit in described hydraulic circuit
Force value, if described force value is beyond service pressure value, carries out persistently pre-timing to described oil return circuit
Between pressure discharge operations, otherwise, directly measure from the oil return circuit of described driving oil cylinder effluent force feed hydraulic pressure
Oil flow.
8. a piling machinery, is provided with and has the drilling bucket expanding the wing, it is characterised in that described piling machinery
It is additionally provided with the control system of drilling bucket as described in any one in claim 1-4, is used for controlling described tool
There is the drilling bucket expanding the wing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354496.2A CN104235087B (en) | 2014-07-23 | 2014-07-23 | The control system of drilling bucket, method and piling machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354496.2A CN104235087B (en) | 2014-07-23 | 2014-07-23 | The control system of drilling bucket, method and piling machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235087A CN104235087A (en) | 2014-12-24 |
| CN104235087B true CN104235087B (en) | 2016-08-24 |
Family
ID=52223806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410354496.2A Active CN104235087B (en) | 2014-07-23 | 2014-07-23 | The control system of drilling bucket, method and piling machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104235087B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842133A (en) * | 2016-08-29 | 2017-06-13 | 王论丛 | A kind of phased-array radar |
| CN110173483B (en) * | 2019-06-28 | 2024-01-23 | 北京三一智造科技有限公司 | Hydraulic system and rotary drilling rig |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0633907A (en) * | 1992-07-16 | 1994-02-08 | Ckd Corp | Pneumatic equipment control method |
| JP2006009540A (en) * | 2004-06-23 | 2006-01-12 | Sanwa Kizai Co Ltd | Hydraulic pressure sensor type extending head |
| US7251935B2 (en) * | 2005-08-31 | 2007-08-07 | Caterpillar Inc | Independent metering valve control system and method |
| CN204003689U (en) * | 2014-07-23 | 2014-12-10 | 北京市三一重机有限公司 | The control system of drilling bucket and piling machinery |
-
2014
- 2014-07-23 CN CN201410354496.2A patent/CN104235087B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104235087A (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105257274B (en) | A kind of driving drill jumbo drilling automatic positioning equipment and method | |
| CN102705282B (en) | Concrete pumping equipment and travel control device and method for series oil cylinders | |
| CN107002715B (en) | Excavator | |
| CN105351280B (en) | Multi-point independent driving hydraulic horizontal control system for leveling | |
| CN105339679A (en) | Hydraulic circuit for construction machinery having floating function and method for controlling floating function | |
| CN103114983B (en) | Pumping stroke control method for viscous material double-cylinder pump and pumping equipment for viscous material | |
| CN104235087B (en) | The control system of drilling bucket, method and piling machinery | |
| CN107503733A (en) | High pressure jet grouting parameter monitoring system, method and high-pressure rotary-spray rig | |
| JP2006283975A (en) | Hydraulic system having variable back pressure control | |
| CN104968863B (en) | Construction equipment | |
| CN205172554U (en) | Multistage shutoff bi -polar observation system | |
| CN103292851B (en) | Excavator oil consumption method of testing and system | |
| CN105386752A (en) | Multi-section plugging double-end observation system | |
| CN107654426A (en) | A kind of drill jumbo and its impulsive control hydraulic system | |
| CN204003689U (en) | The control system of drilling bucket and piling machinery | |
| KR20200124717A (en) | Methods and systems for producing foundation elements on the ground | |
| CN106223973B (en) | Tunneling trolley drilling depth control method, system and tunneling trolley drilling equipment | |
| CA3005244A1 (en) | Device and method for generating percussive pulses or vibrations for a construction machine | |
| CN103470573A (en) | Oil supply and drainage control equipment, system and method for pumping units and engineering machine | |
| CN202646202U (en) | Travel control device of concrete pumping equipment and series connection hydro-cylinders | |
| CN104481944A (en) | Depressurizing system and engineering machinery | |
| CN204003691U (en) | Hydraulic system and the machine that comprises this hydraulic system | |
| CN105003206B (en) | Rotary drilling rig, support leg extending or retracting control system of rotary drilling rig and control method | |
| CN110145297B (en) | Adaptive balancing method and device for submersible drilling machine | |
| EP3521639A1 (en) | Energy regeneration device and work machine provided with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |