CN106704313B - Rotary drilling rig and mast hydraulic control system and mast raising/decline control method - Google Patents
Rotary drilling rig and mast hydraulic control system and mast raising/decline control method Download PDFInfo
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- CN106704313B CN106704313B CN201611169681.XA CN201611169681A CN106704313B CN 106704313 B CN106704313 B CN 106704313B CN 201611169681 A CN201611169681 A CN 201611169681A CN 106704313 B CN106704313 B CN 106704313B
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- 230000007423 decrease Effects 0.000 title claims abstract description 21
- 238000005553 drilling Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 53
- 210000000635 valve cell Anatomy 0.000 claims description 58
- 239000002828 fuel tank Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 184
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000001595 contractor effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of rotary drilling rig and mast hydraulic control system and mast raising/decline control method, wherein the mast hydraulic control system include：Left mast oil cylinder；Right mast oil cylinder；Jacking cylinder；First reversal valve, it is connected with left mast oil cylinder；Second reversal valve, it is connected with right mast oil cylinder；3rd reversal valve, is connected with jacking cylinder；Left mast balanced valve；Right mast balanced valve；Jacking balance valve；First switching valve, it is connected in parallel with left mast balanced valve；Second switching valve, it is connected in parallel with right mast balanced valve；3rd switching valve, it is connected between the rodless cavity of jacking cylinder and the 3rd reversal valve, 3rd switching valve has conducting throttling position and cut-off position, when the 3rd switching valve is in conducting throttling position, the 3rd switching valve and the 5th slow oil return of pipeline that the fluid in the rodless cavity of jacking cylinder can be via conducting.The present embodiment is lain prone the big triangle mast raising/decline hydraulic control system of formula after using, maintaining, convenient disassembly, and it is preferable to enter rock stability.
Description
Technical field
The invention belongs to pile foundation construction equipment technical field, more particularly to a kind of rotary drilling rig and mast hydraulic control
System, and the control method of mast raising/decline.
Background technology
Rotary drilling rig is a kind of modern mechanical-electrical-hydraulic integration heavy mechanical equipment for being used for pore-forming operation in pile foundation engineering,
Work cycle is strong.Mast jib lubbing mechanism is used for completing the lifting of mast and vertical adjustment work, each operation pose are required for adjusting
Mast jib lubbing mechanism is saved, system drive mast oil cylinder, drives mast movement, and according to the actual conditions of rotary drilling rig working site
To complete the lifting of mast and vertical adjustment work.
At present, the mast jib lubbing mechanism of traditional rotary drilling rig is all based on big triangular form and parallelogram sturcutre, preceding
Person is formula design of being lain prone before big triangle, and system control logic is fairly simple, but maintaining, dismounting inconvenience, to site requirements
Compare high, transfer transport inconvenience；It is poor that the latter enters rock stability.
The content of the invention
It is an object of the invention to provide a kind of rotary drilling rig and mast hydraulic control system and mast raising/decline control
Method, the big triangle mast raising/decline hydraulic control system of formula of being lain prone after, can make mast fall on turntable, maintaining,
Convenient disassembly, to site requirements than relatively low, it is easy to transfer to transport, and it is preferable to enter rock stability.
The embodiment of the present invention provides a kind of mast hydraulic control system, including：
Left mast oil cylinder, right mast oil cylinder and jacking cylinder；
First reversal valve, there is the first oil-out A1 and the second oil-out B1, wherein the first oil-out A1 passes through the first pipe
Road is connected with the rodless cavity of left mast oil cylinder, and the second oil-out B1 is connected by the second pipeline with the rod chamber of left mast oil cylinder；
Second reversal valve, there is the first oil-out A2 and the second oil-out B2, wherein the first oil-out A2 passes through the 3rd pipe
Road is connected with the rodless cavity of right mast oil cylinder, and the second oil-out B2 is connected by the 4th pipeline with the rod chamber of right mast oil cylinder；
3rd reversal valve, there is the first oil-out A3 and the second oil-out B3, wherein the first oil-out A3 passes through the 5th pipe
The rodless cavity of road and jacking cylinder is connected, and the second oil-out B3 is connected by the rod chamber of the 6th pipeline and jacking cylinder；
Left mast balanced valve, is connected on the first pipeline and the second pipeline, for preventing two oil pockets of left mast oil cylinder
In pressure exceed limit value；
Right mast balanced valve, is connected on the 3rd pipeline and the 4th pipeline, for preventing two oil pockets of right mast oil cylinder
In pressure exceed limit value；
Jacking balance valve, it is connected on the 5th pipeline, the pressure in rodless cavity for preventing jacking cylinder exceedes limit value；
First switching valve, be connected in parallel with left mast balanced valve on the first pipeline, the first switching valve have conducting position and
End position, when the first switching valve is in conducting position, the fluid in the rodless cavity of left mast oil cylinder can be via the first of conducting
Switching valve and the first pipeline oil return；When the first switching valve is in cut-off position, the fluid in the rodless cavity of left mast oil cylinder is not
The first switching valve can be passed through；
Second switching valve, be connected in parallel with right mast balanced valve on the 3rd pipeline, the second switching valve have conducting position and
End position, when the second switching valve is in conducting position, the fluid in the rodless cavity of right mast oil cylinder can be via the second of conducting
Switching valve and the 3rd pipeline oil return；When the second switching valve is in cut-off position, the fluid in the rodless cavity of right mast oil cylinder is not
The second switching valve can be passed through；
3rd switching valve, it is connected between the rodless cavity of jacking cylinder and the first oil-out A3 of the 3rd reversal valve, the 3rd
Switching valve has conducting throttling position and cut-off position, when the 3rd switching valve is in conducting throttling position, in the rodless cavity of jacking cylinder
Fluid can be via conducting the 3rd switching valve and the 5th slow oil return of pipeline；When the 3rd switching valve is in cut-off position,
Fluid in the rodless cavity of jacking cylinder cannot pass through the 3rd switching valve.
Further, each reversal valve in the first reversal valve, the second reversal valve and the 3rd reversal valve has the first work
Position, the second working position and middle position；When each reversal valve is in the first working position, its second oil-out cut-in pressure oil, first
Oil-out connects fuel tank；When each reversal valve is in the second working position, its first oil-out cut-in pressure oil, the second oil-out
Connect fuel tank；When each reversal valve is in middle position, its first oil-out and the second oil-out are turned on fuel tank.
Further, left mast balanced valve is Bidirectional balanced valve, including the first balanced valve list being connected on the first pipeline
Member and the second balance valve cell being connected on the second pipeline, each check valve for balancing valve cell and including being connected in parallel
With a balance valve body, the first switching valve is connected in parallel on the first pipeline with the first balance valve cell.
Further, right mast balanced valve is Bidirectional balanced valve, including the 3rd balanced valve list being connected on the 3rd pipeline
Member and the 4th balance valve cell being connected on the 4th pipeline, each check valve for balancing valve cell and including being connected in parallel
With a balance valve body, the second switching valve is connected in parallel on the 3rd pipeline with the 3rd balance valve cell.
Further, jacking balance valve includes a check valve and a balance valve body, and check valve is connected to jacking cylinder
Rodless cavity and the 3rd reversal valve the first oil-out A3 between, the 3rd switching valve and check valve are connected in the 5th pipeline in parallel
On.
Further, the first reversal valve, the second reversal valve and the 3rd reversal valve are respectively the solenoid directional control valve of 3-position 4-way,
First switching valve, the second switching valve and the 3rd switching valve are respectively the solenoid directional control valve of 2/2-way.
Further, in addition to controller, the electromagnet of controller and each solenoid directional control valve pass through wired or wireless side
Formula electrically connects.
Further, in addition to the 4th reversal valve, the 4th reversal valve have oil-out A4, and the 3rd switching valve is a hydraulic control
Reversal valve, the oil-out A4 of the 4th reversal valve are connected by the 7th pipeline with the hydraulic control end of the 3rd switching valve.
The embodiment of the present invention also provides a kind of rotary drilling rig, including above-mentioned mast hydraulic control system.
The embodiment of the present invention also provides a kind of mast raising/decline control method, and the control method uses above-mentioned mast
Hydraulic control system, and comprise the following steps：
When mast is raised above from turntable, controls left mast oil cylinder, right mast oil cylinder and jacking cylinder while stretch out altogether
Boosted with by mast to certain angle, mast is continued up into rise until hanging down by left mast oil cylinder and right mast oil cylinder again afterwards
Straight state, and the piston rod of control jacking cylinder are retracted；
When mast falls down rearwardly towards turntable, control the piston rod of jacking cylinder to stretch out, control left mast oil cylinder and right mast
Rod oil cylinder shrinks simultaneously retreats mast down to certain angle, after mast contacts with the piston rod entrance of jacking cylinder,
Control the first switching valve and the second switching valve to switch to respective conducting position respectively, distinguish left mast oil cylinder and right mast oil cylinder
Quick condition is in, the switching-on throttling position of the 3rd switching valve of control, mast by jacking cylinder support and opened under gravity
Begin slowly automatically to decline, until mast is dropped on turntable.
Rotary drilling rig provided in an embodiment of the present invention, the big triangle mast raising/decline hydraulic control system of formula of being lain prone after,
Control logic is fairly simple, can aid in realizing the raising of mast and decline to control by jacking cylinder, mast can be made to fall
On turntable, maintaining, convenient disassembly, to site requirements than relatively low, it is easy to transfer to transport, and it is preferable to enter rock stability.
Brief description of the drawings
Fig. 1 is structural representation of the rotary drilling rig when mast fell to turntable in the embodiment of the present invention.
Fig. 2 is structural representation of the rotary drilling rig when mast and turntable have certain angle in Fig. 1.
Fig. 3 is the mast oil cylinder of rotary drilling rig and the connection diagram of turntable in Fig. 1.
Fig. 4 is the structural representation of middle mast hydraulic control system of the embodiment of the present invention.
Fig. 5 is the mplifying structure schematic diagram of left mast balanced valve and left mast oil cylinder in Fig. 4.
Fig. 6 is the mplifying structure schematic diagram of right mast balanced valve and right mast oil cylinder in Fig. 4.
Fig. 7 is the mplifying structure schematic diagram of jacking balance valve and jacking cylinder in Fig. 4.
Fig. 8 is the mplifying structure schematic diagram of jacking balance valve and jacking cylinder in another embodiment.
Fig. 9 is the structural representation of another embodiment of the present invention middle mast hydraulic control system.
Figure 10 is the mplifying structure schematic diagram of jacking balance valve and jacking cylinder in Fig. 9.
Embodiment
Further to illustrate the present invention to reach technical approach and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to embodiment, structure, feature and its effect of the present invention, describe in detail as after.
Such as Fig. 1 and Fig. 2, the rotary drilling rig that the present embodiment provides includes driver's cabin 31, turntable 32, mast oil cylinder 33, mast
34th, jacking cylinder 35 and bearing 36.
Such as Fig. 3, respectively there is a mast oil cylinder 33 both sides of turntable 32, respectively left mast oil cylinder 33a and right mast oil cylinder
33b, each mast oil cylinder 33a/33b one end are connected with turntable 32, and the other end is connected with mast 34, two mast oil cylinder 33a,
The mast supporting structure of big triangular form is formed between 33b and turntable 32 so that rotary drilling rig to enter rock stability preferable.
The bottom of jacking cylinder 35 is fixed on turntable 32, and specifically, jacking cylinder 35 includes cylinder barrel 35a and piston rod 35b,
Wherein cylinder barrel 35a is fixed on turntable 32, and piston rod 35b can be relative to cylinder barrel 35a to external extension.Preferably, jacking cylinder 35
Be installed as towards the side of driver's cabin 31 tilt, the angle between jacking cylinder 35 and horizontal plane is, for example, 80 °.
It please join Fig. 1 and Fig. 2, when mast 34 needs to fall down backward, machine hand control crank in driver's cabin ensures jacking oil
The piston rod 35b of cylinder 35 is in stretching state, controls mast 34 to fall down backward by two mast oil cylinders 33a, 33b, works as mast
Down to certain angle and when touching the piston rod 35b of jacking cylinder 35 after 34, two mast oil cylinders 33a, 33b stop shrinking simultaneously
Switch to and be in quick condition, jacking cylinder 35 start retracted downward and hold in the palm mast 34 move downward until mast 34 fell to
On turntable 32, mast 34 is set to be horizontally supported on the bearing 36 of the rear side of turntable 32.Now mast 34 is horizontal positioned, machine gravity compared with
It is low, it can be gone everywhere without any hindrance here on the ground of great slope, can also avoid high-altitude obstacle well, be easy to short distance to shift, shift
Also low is required to building site during transport.
When mast 34, which is horizontal, needs to rise mast 34, machine hand control crank in driver's cabin, two masts
After oil cylinder 33a, 33b and jacking cylinder 35 each lead into hydraulic oil, three oil cylinders start to stretch out upwards, with stretching for three oil cylinders
Go out it is slow in one's movements mast 34 is boosted upwards, when mast 34 goes to certain angle the stopping of jacking cylinder 35 act, then by two
Individual mast oil cylinder 33a, 33b continue to stretch out and promote mast 34 to continue to rise until vertical state.
Formula of the rotary drilling rig of the present embodiment lying prone after using designs, and can realize the folded back upon of mast by self structure deformation
It is folded, mast 34 is horizontally supported on turntable 32, substantially reduce machine gravity, maintaining, convenient disassembly, to site requirements ratio
It is relatively low, it is easy to transfer to transport, and using the mast supporting mechanism of big triangular form, it is preferable to enter rock stability.
Pass through the rear side installation jacking cylinder 35 of turntable 32 in rotary drilling rig, for aiding in mast to rise, jacking cylinder 35
Stretching mast 34 is held up into certain angle upwards from horizontality, mast 34 is continued by mast oil cylinder 33a, 33b again afterwards
Be raised above, can meet mast 34 from horizontal level rise when requirement to support force, ensure that mast 34 can be suitable from turntable 32
Profit rises, and solves the problems, such as that mast oil cylinder 33a, 33b for depending merely on the both sides of mast 34 can not rise mast 34；Simultaneously in mast
34 when falling, and jacking cylinder 35 also can aid in mast 34 slowly to drop on turntable 32, add movable mast reliability.
Such as Fig. 4, the embodiment of the present invention also provides a kind of mast hydraulic control system, for controlling the mast of above-mentioned rotary drilling rig
Bar 34 carries out raising and decline.The mast hydraulic control system that the present embodiment provides includes left mast oil cylinder 33a, right mast oil cylinder
33b, jacking cylinder 35, the first reversal valve 11, the second reversal valve 12, the 3rd reversal valve 13, the first switching valve 15, the second switching valve
16th, the 3rd switching valve 17, left mast balanced valve 21, right mast balanced valve 22, jacking balance valve 23, fuel tank 24, main pump 25 and control
Device 27 processed.
First reversal valve 11 is connected with left mast oil cylinder 33a, for controlling left mast oil cylinder 33a to be stretched.First changes
Can be solenoid directional control valve, pilot operated directional control valve or the hand-operated direction valve of 3-position 4-way to valve 11, the first reversal valve in the present embodiment
11 by taking the solenoid directional control valve of 3-position 4-way as an example.First reversal valve 11 includes the first working position (left position in such as figure), the second work
Position (right position in such as figure) and middle position and four hydraulic fluid ports, i.e. oiler P1, oil return inlet T 1, the first oil-out A1 and the second oil-out
B1.It is left by the first pipeline L1 connections between left mast oil cylinder 33a rodless cavity and the first oil-out A1 of the first reversal valve 11
Pass through the second pipeline L2 connections between mast oil cylinder 33a rod chamber and the second oil-out B1 of the first reversal valve 11.When first
When reversal valve 11 is in the first working position, oiler P1 connects with the second oil-out B1, and the oil-out A1 of oil return inlet T 1 and first connects
It is logical；When the first reversal valve 11 is in the second working position, oiler P1 connects with the first oil-out A1, and oil return inlet T 1 goes out with second
Hydraulic fluid port B1 is connected；When the first reversal valve 11 is in middle position, the first oil-out A1 and the second oil-out B1 connect with oil return inlet T 1
It is logical.
Second reversal valve 12 is connected with right mast oil cylinder 33b, for controlling right mast oil cylinder 33b to be stretched.Second changes
Can be solenoid directional control valve, pilot operated directional control valve or the hand-operated direction valve of 3-position 4-way to valve 12, the second reversal valve in the present embodiment
12 by taking the solenoid directional control valve of 3-position 4-way as an example.Second reversal valve 12 includes the first working position (left position in such as figure), the second work
Position (right position in such as figure) and middle position and four hydraulic fluid ports, i.e. oiler P2, oil return inlet T 2, the first oil-out A2 and the second oil-out
B2.It is right by the 3rd pipeline L3 connections between right mast oil cylinder 33b rodless cavity and the first oil-out A2 of the second reversal valve 12
Pass through the 4th pipeline L4 connections between mast oil cylinder 33b rod chamber and the second oil-out B2 of the second reversal valve 12.When second
When reversal valve 12 is in the first working position, oiler P2 connects with the second oil-out B2, and the oil-out A2 of oil return inlet T 2 and first connects
It is logical；When the second reversal valve 12 is in the second working position, oiler P2 connects with the first oil-out A2, and oil return inlet T 2 goes out with second
Hydraulic fluid port B2 is connected；When the second reversal valve 12 is in middle position, the first oil-out A2 and the second oil-out B2 connect with oil return inlet T 2
It is logical.
3rd reversal valve 13 is connected with jacking cylinder 35, for controlling jacking cylinder 35 to be stretched.3rd reversal valve 13
Can be solenoid directional control valve, pilot operated directional control valve or the hand-operated direction valve of 3-position 4-way, the 3rd reversal valve 13 is with three in the present embodiment
Exemplified by the solenoid directional control valve of position four-way.3rd reversal valve 13 includes the first working position (left position in such as figure), the second working position (as schemed
Middle right position) and middle position and four hydraulic fluid ports, i.e. oiler P3, oil return inlet T 3, the first oil-out A3 and the second oil-out B3.Jacking
By the 5th pipeline L5 connections between the rodless cavity of oil cylinder 35 and the first oil-out A3 of the 3rd reversal valve 13, jacking cylinder 35
Pass through the 6th pipeline L6 connections between rod chamber and the second oil-out B3 of the 3rd reversal valve 13.When the 3rd reversal valve 13 is in
During one working position, oiler P3 connects with the second oil-out B3, and oil return inlet T 3 connects with the first oil-out A3；When the 3rd reversal valve
13 when being in the second working position, and oiler P3 connects with the first oil-out A3, and oil return inlet T 3 connects with the second oil-out B3；When
When three reversal valves 13 are in middle position, the first oil-out A3 and the second oil-out B3 connect with oil return inlet T 3.
Incorporated by reference to Fig. 4 and Fig. 5, left mast balanced valve 21 is Bidirectional balanced valve, is connected to the first pipeline L1 and the second pipeline
On L2, the pressure in two oil pockets (i.e. rod chamber and rodless cavity) for preventing left mast oil cylinder 33a exceedes limit value, to ensure
Left mast oil cylinder 33a work safety.
Specifically, left mast balanced valve 21 includes two balance valve cells, i.e., the first balance valve cell 21a and the second balance
Valve cell 21b.First balance valve cell 21a is connected on the first pipeline L1, and the second balance valve cell 21b is connected to the second pipeline
On L2, each check valve 41 and a balance valve body 42 for balancing valve cell 21a/21b and including being connected in parallel, first is flat
The hydraulic control end of balance valve body 42 in weighing apparatus valve cell 21a connects with the first oil-out A1 of the first reversal valve 11, the second balanced valve
The hydraulic control end of balance valve body 42 in unit 21b connects with the second oil-out B1 of the first reversal valve 11.First balance valve cell
In 21a the setting direction of check valve 41 allow pressure oil via the first pipeline L1 be freely accessible to left mast oil cylinder 33a without bar
Chamber, but the fluid in left mast oil cylinder 33a rodless cavity can not flow via the check valve 41 in the first balance valve cell 21a
Go out；The setting direction of check valve 41 allows pressure oil to be freely accessible to a left side via the second pipeline L2 in second balance valve cell 21b
Mast oil cylinder 33a rod chamber, but the fluid in left mast oil cylinder 33a rod chamber can not be via the second balance valve cell
Check valve 41 in 21b flows out.
When the first reversal valve 11 is in the first working position, it is second fuel-displaced that pressure oil via the first reversal valve 11 is conducted to it
On mouthful B1 and the second pipeline L2, then via what the check valve 41 in the second balance valve cell 21b imported left mast oil cylinder 33a there is bar
In chamber, simultaneously because the pressure oil in the second pipeline L2 can promote the balance valve body 42 opened in the first balance valve cell 21a,
Therefore the fluid in left mast oil cylinder 33a rodless cavity can be via the balance valve body 42 opened in the first balance valve cell 21a
Oil return is to fuel tank 24, so as to realize left mast oil cylinder 33a contractive action.Similarly, when the first reversal valve 11 is in the second work
During position, pressure oil is conducted on its first oil-out A1 and the first pipeline L1 via the first reversal valve 11, then via the first balance
Check valve 41 in valve cell 21a is imported in left mast oil cylinder 33a rodless cavity, simultaneously because the pressure oil in the first pipeline L1
The balance valve body 42 opened in the second balance valve cell 21b, therefore the fluid in left mast oil cylinder 33a rod chamber can be promoted
Can be via the oil return of balance valve body 42 opened in the second balance valve cell 21b to fuel tank 24, so as to realize left mast oil cylinder 33a
Extending action.
In the present embodiment, the first switching valve 15 is arranged in left mast balanced valve 21.First switching valve 15 and the first balance
Valve cell 21a is connected in parallel on the first pipeline L1, and the first switching valve 15 can be that the solenoid directional control valve of 2/2-way, hydraulic control are changed
To valve or hand-operated direction valve, the first switching valve 15 is by taking the solenoid directional control valve of 2/2-way as an example in the present embodiment.First switching valve
15 have conducting position (the next in such as figure) and end position (upper in such as figure), and cut-off position is corresponded in the first switching valve 15 and is provided with list
To valve.When the first switching valve 15 is in conducting position, fluid in left mast oil cylinder 33a rodless cavity can be via the of conducting
One switching valve 15 and the first pipeline L1 oil returns are to fuel tank 24；When the first switching valve 15 is in cut-off position, the first switching valve 15
The check valve of interior setting prevents the fluid in left mast oil cylinder 33a rodless cavity from passing through the first switching valve 15.
Incorporated by reference to Fig. 4 and Fig. 6, right mast balanced valve 22 is Bidirectional balanced valve, is connected to the 3rd pipeline L3 and the 4th pipeline
On L4, the pressure in two oil pockets (i.e. rod chamber and rodless cavity) for preventing right mast oil cylinder 33b exceedes limit value, to ensure
Right mast oil cylinder 33b work safety.
Specifically, right mast balanced valve 22 includes two balance valve cells, i.e., the 3rd balance valve cell 22a and the 4th balance
Valve cell 22b.3rd balance valve cell 22a is connected on the 3rd pipeline L3, and the 4th balance valve cell 22b is connected to the 4th pipeline
On L4, each check valve 41 and a balance valve body 42 for balancing valve cell 22a/22b and including being connected in parallel, the 3rd is flat
The hydraulic control end of balance valve body 42 in weighing apparatus valve cell 22a connects with the first oil-out A2 of the second reversal valve 12, the 4th balanced valve
The hydraulic control end of balance valve body 42 in unit 22b connects with the second oil-out B2 of the second reversal valve 12.3rd balance valve cell
In 22a the setting direction of check valve 41 allow pressure oil via the 3rd pipeline L3 be freely accessible to right mast oil cylinder 33b without bar
Chamber, but the fluid in right mast oil cylinder 33b rodless cavity can not flow via the check valve 41 in the 3rd balance valve cell 22a
Go out；The setting direction of check valve 41 allows pressure oil to be freely accessible to the right side via the 4th pipeline L4 in 4th balance valve cell 22b
Mast oil cylinder 33b rod chamber, but the fluid in right mast oil cylinder 33b rod chamber can not be via the 4th balance valve cell
Check valve 41 in 22b flows out.
When the second reversal valve 12 is in the first working position, it is second fuel-displaced that pressure oil via the second reversal valve 12 is conducted to it
On mouthful B2 and the 4th pipeline L4, then via what the check valve 41 in the 4th balance valve cell 22b imported right mast oil cylinder 33b there is bar
In chamber, simultaneously because the pressure oil in the 4th pipeline L4 can promote the balance valve body 42 opened in the 3rd balance valve cell 22a,
Therefore the fluid in right mast oil cylinder 33b rodless cavity can be via the balance valve body 42 opened in the 3rd balance valve cell 22a
Oil return is to fuel tank 24, so as to realize right mast oil cylinder 33b contractive action.Similarly, when the second reversal valve 12 is in the second work
During position, pressure oil is conducted on its first oil-out A2 and the 3rd pipeline L3 via the second reversal valve 12, then via the 3rd balance
Check valve 41 in valve cell 22a is imported in right mast oil cylinder 33b rodless cavity, simultaneously because the pressure oil in the 3rd pipeline L3
The balance valve body 42 opened in the 4th balance valve cell 22b, therefore the fluid in right mast oil cylinder 33b rod chamber can be promoted
Can be via the oil return of balance valve body 42 opened in the 4th balance valve cell 22b to fuel tank 24, so as to realize right mast oil cylinder 33b
Extending action.
In the present embodiment, the second switching valve 16 is arranged in right mast balanced valve 22.Second switching valve 16 and the 3rd balance
Valve cell 22a is connected in parallel on the 3rd pipeline L3, and the second switching valve 16 can be that the solenoid directional control valve of 2/2-way, hydraulic control are changed
To valve or hand-operated direction valve, the second switching valve 16 is by taking the solenoid directional control valve of 2/2-way as an example in the present embodiment.Second switching valve
16 have conducting position (the next in such as figure) and end position (upper in such as figure), and cut-off position is corresponded in the second switching valve 16 and is provided with list
To valve.When the second switching valve 16 is in conducting position, fluid in right mast oil cylinder 33b rodless cavity can be via the of conducting
Two switching valves 16 and the 3rd pipeline L3 oil returns are to fuel tank 24；When the second switching valve 16 is in cut-off position, the second switching valve 16
The check valve of interior setting prevents the fluid in right mast oil cylinder 33b rodless cavity from passing through the second switching valve 16.
Incorporated by reference to Fig. 4 and Fig. 7, in the present embodiment, jacking balance valve 23 is one-way balance valve, is connected to the 5th pipeline L5
On, the pressure in rodless cavity for preventing jacking cylinder 35 exceedes limit value, to ensure the work safety of jacking cylinder 35.Due to
Jacking cylinder 35 primarily serves the auxiliary raising of mast 34 and the effect declined, and the rodless cavity of jacking cylinder 35 is main work
Chamber, therefore jacking balance valve 23 is installed on the 5th pipeline L5 that the rodless cavity with jacking cylinder 35 is connected.But do not invent
Not limited to this, in other embodiments, balanced valve can also be installed on the 6th pipeline L6.
Specifically, jacking balance valve 23 includes a check valve 41 and a balance valve body 42.Check valve 41 is connected to top
Between the rodless cavity of oil-lifting jar 35 and the first oil-out A3 of the 3rd reversal valve 13, the setting of check valve 41 in jacking balance valve 23
Direction allows pressure oil to be freely accessible to the rodless cavity of jacking cylinder 35 via the 5th pipeline L5, but jacking cylinder 35 without bar
Fluid in chamber can not flow out via check valve 41.Balance valve body 42 be connected to the rodless cavity of jacking cylinder 35 and fuel tank 24 it
Between, under normal conditions, balance valve body 42 is in the cut-off state being not turned on, and the only pressure in the rodless cavity of jacking cylinder 35 surpasses
When crossing limit value, just opens voluntarily carries out off-load to balance valve body 42 under high pressure, to ensure the work safety of jacking cylinder 35.
In the present embodiment, the 3rd switching valve 17 is arranged in jacking balance valve 23.3rd switching valve 17 is connected to jacking oil
Between the rodless cavity of cylinder 35 and the first oil-out A3 of the 3rd reversal valve 13, i.e., the 3rd switching valve 17 is connected in parallel with check valve 41
On the 5th pipeline L5.3rd switching valve 17 can be solenoid directional control valve, pilot operated directional control valve or the hand-operated direction valve of 2/2-way,
The 3rd switching valve 17 is by taking the solenoid directional control valve of 2/2-way as an example in the present embodiment.3rd switching valve 17 has conducting throttling position
(left position in such as figure) and end position (right position in such as figure), in the present embodiment, conducting throttling position is corresponded in the 3rd switching valve 17 and is set
There is damped part 170 (such as damping hole).Or in another embodiment, as shown in figure 8, can also with the 3rd switching valve
Damped part 170 (such as damping hole) is set on the branch line of 17 connections, can equally play a part of damping oil return.When
When three switching valves 17 are in conducting throttling position, the fluid in the rodless cavity of jacking cylinder 35 can be via the 3rd switching valve of conducting
17 and the 5th the slow oil returns of pipeline L5 to fuel tank 24；When the 3rd switching valve 17 be in cut-off position when, jacking cylinder 35 without bar
Fluid in chamber cannot pass through the 3rd switching valve 17.
When the 3rd reversal valve 13 is in the first working position, it is second fuel-displaced that pressure oil via the 3rd reversal valve 13 is conducted to it
Mouth B3, then imported via the 6th pipeline L6 in the rod chamber of jacking cylinder 35, while the 3rd switching valve 17 commutation to conducting throttles
Position, therefore the fluid in the rodless cavity of jacking cylinder 35 can be via the 3rd switching valve 17 and the 5th pipeline L5 oil returns to fuel tank
24, so as to realize the recovery of jacking cylinder 35.When the 3rd reversal valve 13 is in the second working position, pressure oil is via the 3rd commutation
Valve 13 is conducted on its first oil-out A3 and the 5th pipeline L5, then imports jacking via the check valve 41 in jacking balance valve 23
In the rodless cavity of oil cylinder 35, while the fluid in the rod chamber of jacking cylinder 35 can be via the 6th pipeline L6 oil returns to fuel tank
24, so as to realize the extending action of jacking cylinder 35.
Controller 27 and each solenoid directional control valve (including the first reversal valve to the 3rd reversal valve and the first switching valve are to the
Three switching valves) electromagnet electrically connected by wired or wireless way, in Fig. 4 with dotted line signal controller 27 changed with each electromagnetism
It is electrically connected between the electromagnet of valve by wired mode, therefore by default control logic in controller 27, to right
When electromagnet in the solenoid directional control valve answered applies electric current, you can solenoid directional control valve corresponding to control carries out switch operation.
The oiler of main pump 25 connects with fuel tank 24, the oil-out of main pump 25 oiler with the first reversal valve 11 respectively
P1, the oiler P2 of the second reversal valve 12 and the 3rd reversal valve 13 oiler P3 connections.In addition, for system safety, in master
The oil-out of pump 25 is also associated with overflow valve (not shown), and when the oil pressure of system exceedes limit value, fluid will be straight by overflow valve
Take back and flow to fuel tank 24.
In the present embodiment, by the gain and loss electric control to each solenoid directional control valve, and each balanced valve is combined, it is possible to achieve
To left mast oil cylinder 33a, right mast oil cylinder 33b and jacking cylinder 35 extension and contraction control, come it is final realize to the raising of mast and
Decline control.
(1), the lift control of mast：
When mast 34 needs to be raised above from turntable 32, pass through the fuel feeding of main pump 25, the right side of the first reversal valve 11 of control
Obtained with the right side of the second reversal valve 12 electric, the first reversal valve 11 and the second reversal valve 12 switch to respective second work respectively
Position, the pressure oil from main pump 25 reach left mast via the check valve 41 in the balance valve cells of the first pipeline L1 and first 21a
Oil cylinder 33a rodless cavity, the fluid in left mast oil cylinder 33a rod chamber is via the balanced valve in the second balance valve cell 21b
The pipeline L2 of body 42 and second carries out oil return, and the pressure oil from main pump 25 is also via the balance valve cells of the 3rd pipeline L3 and the 3rd
Check valve 41 in 22a reaches right mast oil cylinder 33b rodless cavity, and the fluid in right mast oil cylinder 33b rod chamber is via
The pipeline L4 of balance valve body 42 and the 4th in four balance valve cell 22b carries out oil return.Meanwhile control the right side of the 3rd reversal valve 13
Must be electric, the 3rd reversal valve 13 switches to the second working position, and the pressure oil from main pump 25 is also flat via the 5th pipeline L5 and jacking
The check valve 41 in valve 23 that weighs reaches the rodless cavity of jacking cylinder 35, and the fluid in the rod chamber of jacking cylinder 35 is via the 6th pipe
Road L6 carries out oil return, so as to be stretched by three oil cylinders (left mast oil cylinder 33a, right mast oil cylinder 33b and jacking cylinder 35) simultaneously
Go out and jointly boost mast 34 to certain angle (such as 10~15 degree), afterwards again by left mast oil cylinder 33a and right mast oil cylinder 33b
Mast 34 is continued up to rise and up to plumbness, solves left and right mast oil cylinder 33a, 33b for depending merely on the both sides of mast 34 not
The problem of mast 34 being risen.
When mast 34, which rises, rises to perpendicular to the ground, the first reversal valve 11 and the second reversal valve 12 difference dead electricity are controlled, the
One reversal valve 11 and the second reversal valve 12 are back to respective middle position respectively, and the left side of the 3rd reversal valve 13 of control obtains electric in addition,
3rd reversal valve 13 switches to the first working position, while it is electric to control the 3rd switching valve 17 to obtain, and the 3rd switching valve 17 is switching-on
Throttle position, and the pressure oil from main pump 25 reaches the rod chamber of jacking cylinder 35, the nothing of jacking cylinder 35 via the 6th pipeline L6
Fluid in rod cavity can carry out oil return via the conducting throttling position of the 3rd switching valve 17 and the 5th pipeline L5, oily so as to jack
The piston rod 35b recovery (retracting) of cylinder 35.
(2), the decline control of mast：
When mast 34 needs to fall down rearwardly towards turntable 32, the right side of the 3rd reversal valve 13 is first controlled to obtain electric, the 3rd commutation
Valve 13 switches to the second working position, and the pressure oil from main pump 25 is via the check valve in the 5th pipeline L5 and jacking balance valve 23
41 reach the rodless cavity of jacking cylinders 35, and the fluid in the rod chamber of jacking cylinder 35 carries out oil return via the 6th pipeline L6, makes
The piston rod 35b of jacking cylinder 35 first stretches out.After the stretching of jacking cylinder 35, the dead electricity of the 3rd reversal valve 13 is controlled, the 3rd changes
Middle position is back to valve 13, jacking cylinder 35 maintains stretching state.
Then, the left side of the first reversal valve 11 and the left side of the second reversal valve 12 is controlled to obtain electric, the first reversal valve 11 and the
Two reversal valves 12 switch to respective first working position respectively, and the pressure oil from main pump 25 is flat via the second pipeline L2 and second
Check valve 41 in weighing apparatus valve cell 21b reaches left mast oil cylinder 33a rod chamber, the oil in left mast oil cylinder 33a rodless cavity
Liquid carries out oil return, the pressure oil from main pump 25 via the pipeline L1 of balance valve body 42 and first in the first balance valve cell 21a
Right mast oil cylinder 33b rod chamber, right mast are also reached via the check valve 41 in the balance valve cells of the 4th pipeline L4 and the 4th 22b
Fluid in rod oil cylinder 33b rodless cavity is carried out via the pipeline L3 of balance valve body 42 and the 3rd in the 3rd balance valve cell 22a
Oil return, mast 34 is retreated down to certain angle so as to be shunk by left mast oil cylinder 33a and right mast oil cylinder 33b simultaneously
(such as 10~15 degree), now the piston rod 35b of jacking cylinder 35 of the mast 34 with stretching out state, which enters, contacts.
Retreated in mast 34 makes mast 34 contact it with the piston rod 35b entrance of jacking cylinder 35 down to certain angle
Afterwards, the first reversal valve 11 and the second reversal valve 12 difference dead electricity are controlled, the first reversal valve 11 and the second reversal valve 12 return respectively
To respective middle position, control the first switching valve 15 and the second switching valve 16 respectively electric, the first switching valve 15 and the second switching valve
16 switch to respective conducting position respectively, left mast oil cylinder 33a and right mast oil cylinder 33b is in quick condition respectively, then control
Making the 3rd switching valve 17 must be electric, 17 switching-on throttling position of the 3rd switching valve, mast 34 in gravity by the support of jacking cylinder 35
Effect is lower start it is slowly automatic decline, now the fluid in the rodless cavity of jacking cylinder 35 via the 3rd switching valve 17 conducting section
Flow position and the 5th pipeline L5 carries out slow oil return, the decrease speed of mast 34 is adjusted by the damped part in the 3rd switching valve 17
Steadily, until mast 34 is dropped on turntable 32, fluid can be through in the rodless cavity of the left mast oil cylinder 33a in quick condition
Oil return, the rodless cavity of the left mast oil cylinder 33a in quick condition are carried out by the first switching valve 15 turned on and the first pipeline L1
Middle fluid can carry out oil return via the second switching valve 16 of conducting and the 3rd pipeline L3.
Mast 34 is transferred to from left and right mast oil cylinder 33a, 33b be supported by jacking cylinder 35 when, in order to avoid
Impact, can the first switching valve 15 and the second switching valve 16 respectively after electric and delay 1~3 second, then control the 3rd to cut
Change valve 17 it is electric, such mast 34 can first be down to the piston rod 35b of jacking cylinder 35 enter cmpletely contact and then
Mast 34 by the support of jacking cylinder 35 to decline, and is produced so as to avoid impact.
Fig. 9 is the structural representation of mast hydraulic control system provided in another embodiment of the present invention, the present embodiment with
Above-described embodiment difference essentially consists in, and the mast hydraulic control system that the present embodiment provides also includes the He of the 4th reversal valve 14
Auxiliary pump 26, the 3rd switching valve 17 use liquid controlled reversing, i.e. the 3rd switching valve 17 is a pilot operated directional control valve.
Incorporated by reference to Fig. 9 and Figure 10, the 4th reversal valve 14 is connected between the hydraulic control end of the switching valve 17 of auxiliary pump 26 and the 3rd, is used
Commutated in controlling the 3rd switching valve 17.4th reversal valve 14 can be solenoid directional control valve, the pilot operated directional control valve of two-bit triplet
Or hand-operated direction valve, the 4th reversal valve 14 is by taking the solenoid directional control valve of two-bit triplet as an example in the present embodiment.4th reversal valve 14 wraps
Include working position (left position in such as figure) and inoperative position (right position in such as figure) and three hydraulic fluid ports, i.e. oiler P4, the and of oil return inlet T 4
Oil-out A4.When the 4th reversal valve 14 is in working position, oiler P4 connects with oil-out A4, oil return inlet T 4 and oil-out A4
Do not connect；When the 4th reversal valve 14 is in inoperative position, oil return inlet T 4 connects with oil-out A4, oiler P4 and oil-out A4
Do not connect.By the 7th pipeline L7 connections between the hydraulic control end of 3rd switching valve 17 and the oil-out A4 of the 4th reversal valve 14, because
This, by control the 4th reversal valve 14 it is electric, the 4th reversal valve 14 switches to working position, and the pressure oil from auxiliary pump 26 is via the
Seven pipeline L7 reach the hydraulic control end of the 3rd switching valve 17, you can promote the commutation of the 3rd switching valve 17 to conducting throttling position.
The oil needed for expanding-contracting action is carried out due to three oil cylinders (left mast oil cylinder, right mast oil cylinder and jacking cylinder) of control
Pressure is significantly larger than the 3rd switching valve 17 of control and carries out the required oil pressure that commutates, therefore main pump 25 and auxiliary pump 26 are selected in the present embodiment
Collocation use, wherein main pump 25 be used for produce control three oil cylinder expanding-contracting actions needed for pressure oil, the oiler of auxiliary pump 26
Connected with fuel tank 24, the oil-out of auxiliary pump 26 connects with the oiler P4 of the 4th reversal valve 14, and auxiliary pump 26 is used to produce control the
Three switching valves 17 carry out the pressure oil needed for liquid controlled reversing.It is to be understood that, single oil pump can also be used in the present embodiment,
Simply pressure oil caused by the oil pump be supplied to the 3rd switching valve 17 carry out liquid controlled reversing before, it is necessary to for example, by pressure-reducing valve
It is supplied to the 3rd switching valve 17 to carry out liquid controlled reversing use etc. being depressurized, then by the pressure oil after decompression.
Above-mentioned " 3-position 4-way " refers to that the first reversal valve 11, the second reversal valve 12 and the 3rd reversal valve 13 each at least wrap
Three positions and four hydraulic fluid ports are included, in fact, the first reversal valve 11, the second reversal valve 12 and the 3rd reversal valve 13 can also include
More positions and more hydraulic fluid ports, simply some positions and hydraulic fluid port need not be used.
Above-mentioned " two-bit triplet " refers to that the 4th reversal valve 14 comprises at least two positions and three hydraulic fluid ports, in fact, the
Four reversal valves 14 can also include more positions and more hydraulic fluid ports, and simply some positions and hydraulic fluid port need not be used.
Above-mentioned " 2/2-way " refers to that the first switching valve 15, the second switching valve 16 and the 3rd switching valve 17 comprise at least two
Individual position and two hydraulic fluid ports, in fact, the first switching valve 15, the second switching valve 16 and the 3rd switching valve 17 can also be included more
Position and more hydraulic fluid ports, simply some positions and hydraulic fluid port need not be used.
Rotary drilling rig provided in an embodiment of the present invention, the big triangle mast raising/decline hydraulic control system of formula of being lain prone after,
Control logic is fairly simple, can aid in realizing the raising of mast and decline to control by jacking cylinder, mast can be made to fall
On turntable, maintaining, convenient disassembly, to site requirements than relatively low, it is easy to transfer to transport, and it is preferable to enter rock stability.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
- A kind of 1. mast hydraulic control system, it is characterised in that including：Left mast oil cylinder (33a), right mast oil cylinder (33b) and jacking cylinder (35)；First reversal valve (11), there is the first oil-out A1 and the second oil-out B1, wherein the first oil-out A1 passes through the first pipe Road (L1) is connected with the rodless cavity of left mast oil cylinder (33a), and the second oil-out B1 passes through the second pipeline (L2) and left mast oil cylinder The rod chamber connection of (33a)；Second reversal valve (12), there is the first oil-out A2 and the second oil-out B2, wherein the first oil-out A2 passes through the 3rd pipe Road (L3) is connected with the rodless cavity of right mast oil cylinder (33b), and the second oil-out B2 passes through the 4th pipeline (L4) and right mast oil cylinder The rod chamber connection of (33b)；3rd reversal valve (13), there is the first oil-out A3 and the second oil-out B3, wherein the first oil-out A3 passes through the 5th pipe Road (L5) is connected with the rodless cavity of jacking cylinder (35), and the second oil-out B3 passes through the 6th pipeline (L6) and jacking cylinder (35) Rod chamber connects；Left mast balanced valve (21), is connected on the first pipeline (L1) and the second pipeline (L2), for preventing left mast oil cylinder Pressure in two oil pockets of (33a) exceedes limit value；Right mast balanced valve (22), is connected on the 3rd pipeline (L3) and the 4th pipeline (L4), for preventing right mast oil cylinder Pressure in two oil pockets of (33b) exceedes limit value；Jacking balance valve (23), it is connected on the 5th pipeline (L5), the pressure in rodless cavity for preventing jacking cylinder (35) More than limit value；First switching valve (15), it is connected in parallel with left mast balanced valve (21) on the first pipeline (L1), the first switching valve (15) With conducting position and cut-off position, when the first switching valve (15) is in conducting position, the oil in the rodless cavity of left mast oil cylinder (33a) Enough the first switching valves (15) and the first pipeline (L1) oil return via conducting of liquid energy；When the first switching valve (15) is in cut-off position When, the fluid in the rodless cavity of left mast oil cylinder (33a) cannot pass through the first switching valve (15)；Second switching valve (16), it is connected in parallel with right mast balanced valve (22) on the 3rd pipeline (L3), the second switching valve (16) With conducting position and cut-off position, when the second switching valve (16) is in conducting position, the oil in the rodless cavity of right mast oil cylinder (33b) Enough the second switching valves (16) via conducting of liquid energy and the 3rd pipeline (L3) oil return；When the second switching valve (16) is in cut-off position When, the fluid in the rodless cavity of right mast oil cylinder (33b) cannot pass through the second switching valve (16)；3rd switching valve (17), be connected to jacking cylinder (35) rodless cavity and the 3rd reversal valve (13) the first oil-out A3 it Between, the 3rd switching valve (17) has conducting throttling position and cut-off position, when the 3rd switching valve (17) is in conducting throttling position, jacking Fluid in the rodless cavity of oil cylinder (35) can be via conducting the 3rd switching valve (17) and the 5th pipeline (L5) slow oil return； When the 3rd switching valve (17) is in cut-off position, the fluid in the rodless cavity of jacking cylinder (35) cannot pass through the 3rd switching valve (17)。
- 2. mast hydraulic control system as claimed in claim 1, it is characterised in that the first reversal valve (11), the second reversal valve (12) each reversal valve and in the 3rd reversal valve (13) has the first working position, the second working position and middle position；When each commutation When valve is in the first working position, its second oil-out cut-in pressure oil, the first oil-out connects fuel tank (24)；When each reversal valve When being in the second working position, its first oil-out cut-in pressure oil, the second oil-out connects fuel tank (24)；At each reversal valve In middle position, its first oil-out and the second oil-out are turned on fuel tank (24).
- 3. mast hydraulic control system as claimed in claim 1, it is characterised in that left mast balanced valve (21) is bidirectional balanced Valve, including the first balance valve cell (21a) being connected on the first pipeline (L1) and be connected on the second pipeline (L2) second Valve cell (21b) is balanced, it is flat including a check valve (41) being connected in parallel and one each to balance valve cell (21a/21b) Weighed valve body (42), and the first switching valve (15) is connected in parallel on the first pipeline (L1) with the first balance valve cell (21a).
- 4. mast hydraulic control system as claimed in claim 1, it is characterised in that right mast balanced valve (22) is bidirectional balanced Valve, including the 3rd balance valve cell (22a) being connected on the 3rd pipeline (L3) and the be connected on the 4th pipeline (L4) the 4th Valve cell (22b) is balanced, it is flat including a check valve (41) being connected in parallel and one each to balance valve cell (22a/22b) Weighed valve body (42), and the second switching valve (16) is connected in parallel on the 3rd pipeline (L3) with the 3rd balance valve cell (22a).
- 5. mast hydraulic control system as claimed in claim 1, it is characterised in that jacking balance valve (23) includes one unidirectionally Valve (41) and a balance valve body (42), check valve (41) are connected to the rodless cavity and the 3rd reversal valve (13) of jacking cylinder (35) The first oil-out A3 between, the 3rd switching valve (17) and check valve (41) are connected in parallel on the 5th pipeline (L5).
- 6. mast hydraulic control system as claimed in claim 1, it is characterised in that the first reversal valve (11), the second reversal valve (12) and the 3rd reversal valve (13) is respectively the solenoid directional control valve of 3-position 4-way, the first switching valve (15), the second switching valve (16) It is respectively the solenoid directional control valve of 2/2-way with the 3rd switching valve (17).
- 7. mast hydraulic control system as claimed in claim 6, it is characterised in that also including controller (27), controller (27) electromagnet with each solenoid directional control valve is electrically connected by wired or wireless way.
- 8. mast hydraulic control system as claimed in claim 1, it is characterised in that also including the 4th reversal valve (14), the 4th Reversal valve (14) has an oil-out A4, and the 3rd switching valve (17) is a pilot operated directional control valve, the oil-out of the 4th reversal valve (14) A4 is connected by the 7th pipeline (L7) with the hydraulic control end of the 3rd switching valve (17).
- 9. a kind of rotary drilling rig, it is characterised in that including the mast hydraulic control system as described in any one of claim 1 to 8.
- 10. a kind of mast raising/decline control method, it is characterised in that the control method is used as claim 1 to 8 is any Mast hydraulic control system described in, and comprise the following steps：When mast (34) is raised above from turntable (32), left mast oil cylinder (33a), right mast oil cylinder (33b) and jacking are controlled Oil cylinder (35) at the same stretching mast (34) is boosted to certain angle, afterwards again by left mast oil cylinder (33a) and right mast jointly Mast (34) is continued up rise up to plumbness, and the piston rod (35b) of control jacking cylinder (35) by oil cylinder (33b) Retract；When mast (34) falls down rearwardly towards turntable (32), the piston rod (35b) of control jacking cylinder (35) stretches out, and controls left mast Rod oil cylinder (33a) and right mast oil cylinder (33b) at the same contraction mast (34) is retreated down to certain angle, mast (34) with The piston rod (35b) of jacking cylinder (35) enters after contact, and the first switching valve of control (15) and the second switching valve (16) are respectively Respective conducting position is switched to, makes left mast oil cylinder (33a) and right mast oil cylinder (33b) is in quick condition respectively, control the The switching-on throttling position of three switching valves (17), holding in the palm mast (34) under gravity by jacking cylinder (35) it is slow from It is dynamic to decline, until mast (34) is dropped on turntable (32).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611169681.XA CN106704313B (en) | 2016-12-16 | 2016-12-16 | Rotary drilling rig and mast hydraulic control system and mast raising/decline control method |
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| CN201611169681.XA CN106704313B (en) | 2016-12-16 | 2016-12-16 | Rotary drilling rig and mast hydraulic control system and mast raising/decline control method |
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| US11332911B2 (en) * | 2017-09-29 | 2022-05-17 | Hitachi Construction Machinery Tierra Co., Ltd. | Construction machine |
| CN108006008B (en) * | 2017-12-26 | 2023-07-18 | 恒天九五重工有限公司 | Soft system of mast and rotary drilling rig |
| CN108708674B (en) * | 2018-05-15 | 2020-08-04 | 上海中联重科桩工机械有限公司 | Control system and control method for vertical mast with drill rod of rotary drilling rig |
| CN108708675B (en) * | 2018-05-15 | 2020-07-14 | 上海中联重科桩工机械有限公司 | Control system and control method for mast inversion with drill rod of rotary drilling rig |
| CN109083876B (en) * | 2018-09-12 | 2020-05-01 | 苏州丹顿机电有限公司 | Balance loop using electromagnetic one-way valve with adjustable stopping direction |
| CN112065288B (en) * | 2020-09-10 | 2022-11-01 | 上海中联重科桩工机械有限公司 | Mast verticality adjusting method and system and rotary drilling rig |
| CN114526274A (en) * | 2022-01-18 | 2022-05-24 | 北京三一智造科技有限公司 | Control method of rotary drilling rig, hydraulic system and rotary drilling rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8118113B2 (en) * | 2009-03-26 | 2012-02-21 | Longyear Tm, Inc. | Hydraulic control system for drilling systems |
| CN102155168A (en) * | 2011-02-19 | 2011-08-17 | 徐州雷曼机械科技有限公司 | Large triangular structure derricking mechanism for rotary drilling rig with auxiliary jacking mechanism |
| CN202202817U (en) * | 2011-08-31 | 2012-04-25 | 北京市三一重机有限公司 | Rotary drilling rig |
| CN203602273U (en) * | 2013-10-09 | 2014-05-21 | 中联重科股份有限公司 | Hydraulic control system for controlling lifting of amplitude-variable mast of crane and crane |
| CN106223865B (en) * | 2016-09-26 | 2018-10-12 | 上海中联重科桩工机械有限公司 | Mast folding-back rotary drilling rig and method with drilling rod movable mast |
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