CN108150643A - A kind of shift valve block, power head multi gear level controlling system and control method and rotary drilling rig - Google Patents
A kind of shift valve block, power head multi gear level controlling system and control method and rotary drilling rig Download PDFInfo
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- CN108150643A CN108150643A CN201810058185.XA CN201810058185A CN108150643A CN 108150643 A CN108150643 A CN 108150643A CN 201810058185 A CN201810058185 A CN 201810058185A CN 108150643 A CN108150643 A CN 108150643A
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- oil
- actuator port
- head motor
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- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 8
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 113
- 239000010720 hydraulic oil Substances 0.000 claims description 43
- 239000012530 fluid Substances 0.000 claims description 13
- 238000007667 floating Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910017435 S2 In Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
-
- 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- 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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of shift valve blocks, and including stop valve, float trap and Fill valve, the stop valve includes the first stop valve and the second stop valve；The Fill valve includes the first Fill valve and the second Fill valve；The shift valve block has control mouth, repairing mouth, the first oil inlet, the second oil inlet, the first oil outlet and the second oil outlet.A kind of power head multi gear level controlling system provided by the invention, including pioneer pump, reversal valve, solenoid valve, main pump, counterbalance valve, overflow valve, power head motor group and the shift valve block；The power head motor group includes N number of power head motor；The overflow valve includes the first overflow valve and the second overflow valve；The quantity of the solenoid valve and shift valve block is N 1.The present invention realizes the multi gear position output of rotary digging drill power head, can provide corresponding operating mode according to different geology, so as to improve the working efficiency of rotary drilling rig, reduces the fuel consumption of rotary drilling rig.
Description
Technical field
The present invention relates to a kind of shift valve block, power head multi gear level controlling system and control method and rotary drilling rigs
Background technology
Rotary drilling rig is a kind of widely used efficient pore-forming equipment of heavy caliber in foundation construction of full hydraulic drive.It is dynamic
Power head is the key working part of rotary drilling rig, and output torque driving equipment carries out bore operation.Existing rotary drilling rig
Power head is usually drive by hydraulic motor, and in, large-scale rotary drilling rig can generally use multiple power head motors, these are moved
Power head horse is up to being to work at the same time, and when hydraulic system pressure reaches default maximum pressure, power head output torque reaches maximum
Only there are one the outputs of power head peak torque for value and power head, are a gear operating mode.And rotary drilling rig construction object is very
Complexity has Soft Soil Layer, hard stratum, severely-weathered, weak weathering, granite etc., the construction demand of these different geology rotary drilling rigs
It is different, for example Soft Soil Layer needs to provide the operating mode of high rpm low torque, and enters hard rock and then generally require large torque
The operating mode of the slow-speed of revolution.Therefore, the power head of rotary drilling rig should be designed to that multi gear position exports, can be provided according to different geology
Corresponding operating mode so as to improve the working efficiency of rotary drilling rig, reduces the fuel consumption of rotary drilling rig, is rotary drilling rig
Important development trend.
Invention content
The purpose of the present invention, which is that, has overcome the deficiencies of the prior art and provide a kind of shift valve block, power head multi gear position
Control system and control method and rotary drilling rig, the present invention realizes the multi gear position output of rotary digging drill power head, with energy basis
Different geology provide corresponding operating mode, and so as to improve the working efficiency of rotary drilling rig, the fuel oil for reducing rotary drilling rig disappears
Consumption.
To achieve these goals, the present invention provides a kind of shift valve block, including stop valve, float trap and Fill valve,
The stop valve includes the first stop valve and the second stop valve；The Fill valve includes the first Fill valve and the second Fill valve；
The shift valve block has control mouth, repairing mouth, the first oil inlet, the second oil inlet, the first oil outlet and second
Oil outlet；
The pilot port of first stop valve, the pilot port of the second stop valve, the pilot port of float trap with the control
Mouth is connected；
First oil inlet is connected with the import of first stop valve, and the outlet of first stop valve passes through
One oil duct is connected with first oil outlet；
Second oil inlet is connected with the import of second stop valve, and the outlet of second stop valve passes through
Two oil ducts are connected with second oil outlet；
First oil duct is connected with the outlet of first Fill valve, the entrance of first Fill valve and described the
The entrance of two Fill valves is connected, and the outlet of second Fill valve is connected with second oil duct；
First hydraulic fluid port of the float trap is connected with first oil duct, the second hydraulic fluid port of the float trap and described the
Two oil ducts are connected；
The entrance of first Fill valve and the entrance of the second Fill valve are connected with the repairing mouth；
The liquid flow direction of first Fill valve is only flows to first Fill valve from the entrance of first Fill valve
Outlet；
The liquid flow direction of second Fill valve is only flows to second Fill valve from the entrance of second Fill valve
Outlet.
Further, first Fill valve and the second Fill valve are check valve.
A kind of power head multi gear level controlling system provided by the invention, including pioneer pump, reversal valve, solenoid valve, main pump, the back of the body
Pressure valve, overflow valve, power head motor group and the shift valve block；The power head motor group includes N number of power head motor；
The overflow valve includes the first overflow valve and the second overflow valve；The quantity of the solenoid valve and shift valve block is N-1；Wherein
N is natural number, N >=2；
The hydraulic oil outlet of the pioneer pump is connected with the oil inlet of the N-1 solenoid valves, the N-1 solenoid valves
Control mouth of the oil outlet respectively with N-1 shift valve blocks be connected；The hydraulic oil outlet of the pioneer pump and described the
One overflow valve is connected；
The hydraulic oil outlet of the main pump is connected with the oil inlet of the reversal valve；The hydraulic oil outlet of the main pump with
Second overflow valve is connected；The first actuator port and the second actuator port of the reversal valve respectively with the power
The first actuator port and the second actuator port that head horse reaches are connected；
Second oil inlet of the N-1 shift valve blocks is connected with the first actuator port of the reversal valve；N-1
First oil inlet of the shift valve block is connected with the second actuator port of the reversal valve；
First oil outlet of N-1 shift valve blocks the first actuator port with the N-1 power head motors respectively
It is connected；Second oil outlet of N-1 shift valve blocks the second working oil with the N-1 power head motors respectively
Mouth is connected；
The N-1 repairing mouths of the shift valve block and the oil return opening of the reversal valve are connected with the counterbalance valve.
A kind of control method of power head multi gear level controlling system provided by the invention, includes the following steps：
Step S1：Operate that reversal valve rotates forward guide or reversion guide, reversal valve work in left position or right position, the of reversal valve
A fuel-displaced oil return in one actuator port and the second actuator port；Oil inlet of the hydraulic oil through reversal valve of main pump output at this time
Mouth is delivered to the first actuator port or the second actuator port of reversal valve；The power head horse being wherein directly connected to reversal valve
It reaches, the hydraulic oil of the first actuator port of reversal valve or the output of the second actuator port is fed directly to the first of the power head motor
Actuator port or the second actuator port, to drive the power head motor forward or reverse；
In remaining N-1 power head motor, when solenoid valve corresponding with power head motor must not be electric, corresponding shift valve
The first stop valve, the second stop valve and the float trap of block do not commutate, i.e. the first stop valve, the second stop valve work in the right side
Position, float trap works in bottom, when the first actuator port of reversal valve is fuel-displaced, and during the second actuator port oil return, reversal valve
The second oil inlet through shift valve block, the second stop valve, the conveying of the second oil outlet successively of the hydraulic oil of first actuator port output
To the second actuator port of corresponding power head motor, corresponding power head motor is driven to rotate forward or when the second of reversal valve works
Hydraulic fluid port is fuel-displaced, and during the first actuator port oil return, and the hydraulic oil of the second actuator port output of reversal valve is successively through shift valve block
The first oil inlet, the first stop valve, the first oil outlet be delivered to the first actuator port of corresponding power head motor, driving corresponds to
Power head motor inverts；
In remaining N-1 power head motor, when solenoid valve corresponding with power head motor obtains electric, the liquid of pioneer pump output
Pressure oil is delivered to the control mouth of corresponding shift valve block after corresponding solenoid valve, to drive corresponding shift valve in the block first
Stop valve, the second stop valve and float trap commutate, i.e. the first stop valve, the second stop valve work in left position, float trap work
Make in upper, the oil circuit of the first actuator port of reversal valve is cut off by the second stop valve at this time, the oil circuit quilt of the second actuator port
First stop valve is cut off, and corresponding power head motor floats；
Step S2：In step sl, the power head motor in floating, since float trap works in upper, power head horse
The first actuator port and the second actuator port reached is connected, and a minor loop is formed between the power head motor and float trap,
It dallies so as to the power head motor be driven to float during power head rotation；
Step S3：The setting pressure of counterbalance valve is higher than the Opening pressure of the first Fill valve and the second Fill valve, in step S2
In, the power head motor in idle running of floating has the leakage of hydraulic oil, when the first actuator port of the power head motor or the
When the pressure of two actuator ports is less than the setting pressure of counterbalance valve, the hydraulic oil to flow back at reversal valve oil return opening is pressurized through counterbalance valve
The repairing mouth of backward corresponding shift valve block carries out repairing, fills into the hydraulic oil of repairing mouth through the first Fill valve or the second Fill valve
It is delivered to the first actuator port or the second actuator port of the power head motor afterwards, hydraulic oil is filled into the power head motor,
The power head motor to be prevented to be emptied damage.
A kind of rotary drilling rig provided by the invention, including the power head multi gear level controlling system.
Compared with prior art, beneficial effects of the present invention：
1st, main pump of the present invention provides hydraulic oil and the power head motor for back-driving and being directly connected to reversal valve is changed through reversal valve
Forward or reverse.The present invention is provided with shift valve block between power head motor and reversal valve, and shift valve block is provided by pioneer pump
Hydraulic oil and through solenoid valve control, one shift valve block of a solenoid valve control, solenoid valve obtain it is electric after, cutting inside shift valve block
Disconnected valve and float trap commutation, stop valve cut off power head motor working oil path, the power that float trap connects the shift valve block
Two actuator ports connection that head horse reaches, power head motor float.When drill head system works, power head drives the power head
Motor dallies, and main pump hydraulic oil is all supplied to remaining power head motor, and power head max. output torque will few power
Head horse realizes power head gear shift up to effect.The present invention is by setting shift valve block to realize the break-make of power head motor working oil path；
By the way that solenoid valve is set to realize being switched fast for each gear of power head, the multi gear position for realizing rotary digging drill power head exports, with
Corresponding operating mode can be provided according to different geology, so as to improve the working efficiency of rotary drilling rig, reduce rotary drilling rig
Fuel consumption.
2nd, when the cut-off power head motor floating of the present invention is dallied, the hydraulic oil in power head motor has leakage, is
Power head motor is prevented to be emptied due to leakage, the present invention is provided with Fill valve, wherein Fill valve and reversal valve in shift valve block
Oil return opening be connected with counterbalance valve, the setting pressure of counterbalance valve is higher than the Opening pressure of Fill valve, dynamic when what is be cut off
When the pressure for the actuator port that power head horse reaches is less than the setting pressure of counterbalance valve, the hydraulic oil to flow back at reversal valve oil return opening is through the back of the body
Repairing mouth, Fill valve through shift valve block are filled into cut-off power head motor after pressure valve increase, so ensure that power
Head horse reaches damage up to not being emptied when floating and dallying to prevent stopping power head horse.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the hydraulic schematic diagram of shift valve block in the embodiment of the present invention.
Fig. 2 is the hydraulic schematic diagram of control system in the embodiment of the present invention.
Specific embodiment
Invention is further illustrated below in conjunction with the accompanying drawings, but is not limited to the scope of the present invention.
Embodiment
As shown in Figure 1, a kind of shift valve block provided by the invention, described including stop valve, float trap 105 and Fill valve
Stop valve includes the first stop valve 101 and the second stop valve 102；The Fill valve includes the first Fill valve 103 and the second repairing
Valve 104；
The shift valve block 1 has control mouth Z, repairing mouth S, the first oil inlet V1, the second oil inlet V2, the first oil outlet
C1 and the second oil outlet C2；
The pilot port of first stop valve 101, the pilot port of the second stop valve 102, the pilot port of float trap 105 with
The control mouth Z is connected；
The first oil inlet V1 is connected with the import of first stop valve 101, and first stop valve 101 goes out
Mouth is connected by the first oil duct with the first oil outlet C1；
The second oil inlet V2 is connected with the import of second stop valve 102, and second stop valve 102 goes out
Mouth is connected by the second oil duct with the second oil outlet C2；
First oil duct is connected with the outlet of first Fill valve 103, the entrance of first Fill valve 103 with
The entrance of second Fill valve 104 is connected, and the outlet of second Fill valve 104 is connected with second oil duct；
First hydraulic fluid port of the float trap 105 is connected with first oil duct, the second hydraulic fluid port of the float trap 105 with
Second oil duct is connected；
The entrance of the entrance of first Fill valve 103 and the second Fill valve 104 is connected with the repairing mouth S；
The liquid flow direction of first Fill valve 103 is only flows to described first from the entrance of first Fill valve 103
The outlet of Fill valve 103；
The liquid flow direction of second Fill valve 104 is only flows to described second from the entrance of second Fill valve 104
The outlet of Fill valve 104.
In the present embodiment, 103 and second Fill valve 104 of the first Fill valve is check valve.Stop valve is two two
Usually logical logical valve, float trap 105 are the normally closed logical valve of bi-bit bi-pass.
A kind of power head multi gear level controlling system provided by the invention, including pioneer pump 2, reversal valve 6, solenoid valve 5, main pump
3rd, the shift valve block 1 described in counterbalance valve 4, overflow valve, power head motor group and claims 1 or 2；The power head motor group
Including N number of power head motor；The overflow valve includes the first overflow valve 7 and the second overflow valve 8；The solenoid valve 5 and shift valve
The quantity of block 4 is N-1；Wherein N be natural number, N >=2；
The hydraulic oil outlet of the pioneer pump 2 is connected with the oil inlet of the N-1 solenoid valves 5, the N-1 electromagnetism
Control mouth Z of the oil outlet of valve 5 respectively with the N-1 shift valve blocks 1 is connected；The hydraulic oil outlet of the pioneer pump 2 with
First overflow valve 7 is connected；
The hydraulic oil outlet of the main pump 3 is connected with the oil inlet P of the reversal valve 6；The hydraulic oil of the main pump 3 goes out
Mouth is connected with second overflow valve 8；The the first actuator port A1 and the second actuator port B1 of the reversal valve 6 are respectively with one
The the first actuator port A and the second actuator port B of a power head motor 9 are connected；
Second oil inlet V2 of the N-1 shift valve blocks 1 is connected with the first actuator port A1 of the reversal valve 6
It connects；First oil inlet V1 of the N-1 shift valve blocks 1 is connected with the second actuator port B1 of the reversal valve 6；
First oil outlet C1 of the N-1 shift valve blocks 1 the first work with the N-1 power head motors 9 respectively
Hydraulic fluid port A is connected；Second oil outlet C2 of N-1 shift valve blocks 1 respectively with N-1 power head motors 9
Second actuator port B is connected；
The repairing mouth S of N-1 shift valve blocks 1 and the oil return inlet T of the reversal valve 6 with 4 phase of counterbalance valve
Connection.
In the present embodiment, pioneer pump 2 is gear pump, and main pump 3 is variable pump, and counterbalance valve 4 is for direct-acting overflow valve or unidirectionally
Valve, solenoid valve 5 be two-bit triplet solenoid valve or two position four-way solenoid valves, reversal valve 6 be three six logical pilot operated directional control valves, power head
Motor 9 is variable displacement motor.
A kind of control method of power head multi gear level controlling system provided by the invention, includes the following steps：
Step S1：It operates reversal valve 6 to rotate forward guide or invert guide, reversal valve 2 works in left position or right position, reversal valve 2
The first actuator port A1 and the second actuator port B1 in a fuel-displaced oil return；The hydraulic oil that main pump 3 exports at this time is through changing
The the first actuator port A1 or the second actuator port B1 of reversal valve 6 are delivered to the oil inlet P of valve 2；It is wherein direct with reversal valve 2
One power head motor 9 of connection, the hydraulic oil of the first actuator port A1 or the second actuator port B1 output of reversal valve 6 are directly defeated
It send to the first actuator port A of the power head motor 9 or the second actuator port B, the power head motor 9 to be driven to rotate forward or instead
Turn；
It is corresponding to change when must not be electric with 9 corresponding solenoid valve 5 of power head motor in remaining N-1 power head motor 9
The first stop valve 101, the second stop valve 102 and the float trap 105 of shelves valve block 1 do not commutate, i.e. the first stop valve 101, second
Stop valve 102 works in right position, and float trap 105 works in bottom, when the first actuator port A1 of reversal valve 6 is fuel-displaced, and
During two actuator port B1 oil returns, the hydraulic oil of the first actuator port A1 of reversal valve 6 output successively through shift valve block 1 second into
Hydraulic fluid port V2, the second stop valve 102, the second oil outlet C2 are delivered to the second actuator port B of corresponding power head motor 9, driving pair
Power head motor 9 is answered to rotate forward or when the second actuator port B1 of reversal valve 6 is fuel-displaced, and during the first actuator port A1 oil returns, changes
To valve 6 the second actuator port B1 export hydraulic oil successively the first oil inlet V1 through shift valve block 1, the first stop valve 101,
First oil outlet C1 is delivered to the first actuator port A of corresponding power head motor 9, and corresponding power head motor 9 is driven to invert；
In remaining N-1 power head motor 9, when obtaining electric with 9 corresponding solenoid valve 5 of power head motor, pioneer pump 2 exports
Hydraulic oil the control mouth Z of corresponding shift valve block 1 is delivered to after corresponding solenoid valve 5, to drive corresponding shift valve block 1
In the first stop valve 101, the second stop valve 102 and float trap 105 commutate, i.e. the first stop valve 101, the second stop valve
102 work in left position, and float trap 105 works in upper, and the oil circuit of the first actuator port A1 of reversal valve 6 is cut by second at this time
Disconnected valve 102 is cut off, and the oil circuit of the second actuator port B1 is cut off by the first stop valve 101, and corresponding power head motor 9 floats；
Step S2：In step sl, the power head motor 9 in floating, since float trap 105 works in upper, power
Head horse is connected up to 9 the first actuator port A and the second actuator port B, is formed between the power head motor 9 and float trap 105
One minor loop dallies so as to the power head motor 9 be driven to float during power head rotation；
Step S3：The setting pressure of counterbalance valve 4 is higher than the Opening pressure of the first Fill valve 103 and the second Fill valve 104,
In step S2, the power head motor 9 in idle running of floating has the leakage of hydraulic oil, when the first work of the power head motor 9
When the pressure of hydraulic fluid port A or the second actuator port B are less than the setting pressure of counterbalance valve 4, the hydraulic pressure of reflux at 6 oil return inlet T of reversal valve
The repairing mouth S that oil is pressurized backward corresponding shift valve block 1 through counterbalance valve 4 carries out repairing, fills into the hydraulic oil of repairing mouth S through first
The the first actuator port A or the second actuator port B of the power head motor 9 are delivered to after 103 or second Fill valve 104 of Fill valve,
Hydraulic oil is filled into the power head motor 9, the power head motor 9 to be prevented to be emptied damage.
As shown in Fig. 2, power head multi gear level controlling system of the present invention and control are illustrated by taking three power head motors 9 as an example
Method processed：Directly it is connected positioned at intermediate power head motor 9 with reversal valve 6, other two power head motor 9 passes through gear shift
Valve block 1 is connected with reversal valve 6.When drill head system works, and two solenoid valves 5 must not electricity when, three power heads at this time
Motor 9 works at the same time, and at this moment the max. output torque of power head is 3T (T is the max. output torque of a power head motor 9).
When one of solenoid valve 5 must be electric, another solenoid valve 5 must not be electric, two power head motors 9 work at the same time at this time, ascend the throne
A power head motor 9 in the intermediate work of power head motor 9 and other two works, and a power head motor 9 is cut
Break and idle running of floating, at this moment the max. output torque of power head is 2T；When two solenoid valves 5 all it is electric when, at this time only there are one
Power head motor 9 works at the same time, that is, is located at intermediate power head motor 9 and works, and other two power head motor 9 is cut off simultaneously
It floats and dallies, at this moment the max. output torque of power head is T.
A kind of rotary drilling rig provided by the invention, including the power head multi gear level controlling system.
Main pump 3 of the present invention provides hydraulic oil and changes the power head motor for back-driving and being directly connected to reversal valve 6 through reversal valve 6
9 forward or reverse.The present invention is provided with shift valve block 1 between power head motor 9 and reversal valve 6, and shift valve block 1 is by pioneer pump
2 offer hydraulic oil are simultaneously controlled through solenoid valve 5, and solenoid valve 5 controls a shift valve block 1, solenoid valve 5 it is electric after, shift valve
Stop valve and float trap 105 inside block 1 commutate, and stop valve cuts off 9 working oil path of power head motor, and float trap 105 should
The two actuator ports connection for the power head motor 9 that shift valve block 1 connects, power head motor 9 float.When drill head system works
When, power head drives the power head motor 9 to dally, and 3 hydraulic oil of main pump is all supplied to remaining power head motor 9, power head
Max. output torque acts on a few power head motor 9, realizes power head gear shift.The present invention is by setting shift valve block 1 real
The break-make of 9 working oil path of existing power head motor；By the way that solenoid valve 5 is set to realize being switched fast for each gear of power head, realize
The multi gear position output of rotary digging drill power head, corresponding operating mode can be provided according to different geology, so as to improve rotary digging
The working efficiency of drilling machine reduces the fuel consumption of rotary drilling rig.
When the cut-off floating of power head motor 9 of the present invention is dallied, the hydraulic oil in power head motor 9 has leakage, is
Power head motor 9 is prevented to be emptied due to leakage, the present invention is provided with Fill valve, wherein Fill valve and commutation in shift valve block 1
The oil return inlet T of valve 6 is connected with counterbalance valve 4, and the setting pressure of counterbalance valve 4 is higher than the Opening pressure of Fill valve, when being cut
When the pressure of the actuator port of disconnected power head motor 9 is less than the setting pressure of counterbalance valve 4, flow back at 6 oil return inlet T of reversal valve
Hydraulic oil repairing mouth S, Fill valve through shift valve block 1 after the increase of counterbalance valve 4 are filled into cut-off power head motor 9,
It so ensure that power head motor 9 floats not to be emptied when dallying, be damaged to prevent stopping power head horse up to 9.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (5)
1. a kind of shift valve block, it is characterised in that：Including stop valve, float trap (105) and Fill valve, the stop valve includes the
One stop valve (101) and the second stop valve (102)；The Fill valve includes the first Fill valve (103) and the second Fill valve
(104)；
The shift valve block (1) has control mouth (Z), repairing mouth (S), the first oil inlet (V1), the second oil inlet (V2), first
Oil outlet (C1) and the second oil outlet (C2)；
The pilot port of first stop valve (101), the pilot port of the second stop valve (102), the pilot port of float trap (105) are equal
It is connected with the control mouth (Z)；
First oil inlet (V1) is connected with the import of first stop valve (101), first stop valve (101)
Outlet is connected by the first oil duct with first oil outlet (C1)；
Second oil inlet (V2) is connected with the import of second stop valve (102), second stop valve (102)
Outlet is connected by the second oil duct with second oil outlet (C2)；
First oil duct is connected with the outlet of first Fill valve (103), the entrance of first Fill valve (103) with
The entrance of second Fill valve (104) is connected, and the outlet of second Fill valve (104) is connected with second oil duct
It connects；
First hydraulic fluid port of the float trap (105) is connected with first oil duct, the second hydraulic fluid port of the float trap (105) with
Second oil duct is connected；
The entrance of first Fill valve (103) and the entrance of the second Fill valve (104) are connected with the repairing mouth (S)；
The liquid flow direction of first Fill valve (103) is only flows to described first from the entrance of first Fill valve (103)
The outlet of Fill valve (103)；
The liquid flow direction of second Fill valve (104) is only flows to described second from the entrance of second Fill valve (104)
The outlet of Fill valve (104).
2. a kind of shift valve block according to claim 1, which is characterized in that first Fill valve (103) and second is mended
Fuel tap (104) is check valve.
3. a kind of power head multi gear level controlling system, which is characterized in that including pioneer pump (2), reversal valve (6), solenoid valve (5),
Shift valve block (1) described in main pump (3), counterbalance valve (4), overflow valve, power head motor group and claims 1 or 2；It is described dynamic
Power head groups of motors includes N number of power head motor (9)；The overflow valve includes the first overflow valve (7) and the second overflow valve (8)；Institute
The quantity for stating solenoid valve (5) and shift valve block (4) is N-1；Wherein N be natural number, N >=2；
The hydraulic oil outlet of the pioneer pump (2) is connected with the oil inlet of the N-1 solenoid valves (5), the N-1 electromagnetism
Control mouth (Z) of the oil outlet of valve (5) respectively with the N-1 shift valve blocks (1) is connected；The hydraulic pressure of the pioneer pump (2)
Oil export is connected with first overflow valve (7)；
The hydraulic oil outlet of the main pump (3) is connected with the oil inlet (P) of the reversal valve (6)；The hydraulic pressure of the main pump (3)
Oil export is connected with second overflow valve (8)；The first actuator port (A1) and the second actuator port of the reversal valve (6)
(B1) it is connected respectively with the first actuator port (A) of power head motor (9) and the second actuator port (B)；
The second oil inlet (V2) of N-1 shift valve blocks (1) with the first actuator port of the reversal valve (6) (A1) phase
Connection；The first oil inlet (V1) of N-1 shift valve blocks (1) with the second actuator port of the reversal valve (6) (B1)
It is connected；
The first oil outlet (C1) of N-1 shift valve blocks (1) the first work with the N-1 power head motors (9) respectively
Make hydraulic fluid port (A) to be connected；The second oil outlet (C2) of N-1 shift valve blocks (1) respectively with the N-1 power heads
The second actuator port (B) of motor (9) is connected；
The repairing mouth (S) of N-1 shift valve blocks (1) and the oil return opening (T) of the reversal valve (6) with the counterbalance valve
(4) it is connected.
4. a kind of control method of control system as claimed in claim 3, which is characterized in that include the following steps：
Step S1：It operates reversal valve (6) to rotate forward guide or invert guide, reversal valve (2) works in left position or right position, reversal valve
(2) a fuel-displaced oil return in the first actuator port (A1) and the second actuator port (B1)；The liquid of main pump (3) output at this time
Oil inlet (P) of the pressure oil through reversal valve (2) is delivered to the first actuator port (A1) or the second actuator port of reversal valve (6)
(B1)；The power head motor (9) being wherein directly connected to reversal valve (2), the first actuator port (A1) of reversal valve (6) or
The hydraulic oil of two actuator ports (B1) output is fed directly to the first actuator port (A) or the second work of the power head motor (9)
Make hydraulic fluid port (B), to drive power head motor (9) forward or reverse；
It is corresponding when solenoid valve (5) corresponding with power head motor (9) must not be electric in remaining N-1 power head motor (9)
The first stop valve (101), the second stop valve (102) and the float trap (105) of shift valve block (1) do not commutate, i.e., the first cut-out
Valve (101), the second stop valve (102) work in right position, and float trap (105) works in bottom, when the first work of reversal valve (6)
It is fuel-displaced to make hydraulic fluid port (A1), and during the second actuator port (B1) oil return, the hydraulic pressure of the first actuator port (A1) output of reversal valve (6)
The second oil inlet (V2) through shift valve block (1), the second stop valve (102), the second oil outlet (C2) are delivered to correspondence to oil successively
The second actuator port (B) of power head motor (9) drives corresponding power head motor (9) to rotate forward or the when reversal valve (6)
Two actuator ports (B1) are fuel-displaced, and during the first actuator port (A1) oil return, the second actuator port (B1) output of reversal valve (6)
The first oil inlet (V1) through shift valve block (1), the first stop valve (101), the first oil outlet (C1) are delivered to hydraulic oil successively
The first actuator port (A) of corresponding power head motor (9) drives corresponding power head motor (9) to invert；
In remaining N-1 power head motor (9), when solenoid valve (5) corresponding with power head motor (9) must be electric, pioneer pump (2)
The hydraulic oil of output is delivered to the control mouth (Z) of corresponding shift valve block (1) after corresponding solenoid valve (5), to drive correspondence
Shift valve block (1) in the first stop valve (101), the second stop valve (102) and float trap (105) commutate, i.e., first cuts
Disconnected valve (101), the second stop valve (102) work in left position, and float trap (105) works in upper, the of reversal valve (6) at this time
The oil circuit of one actuator port (A1) is cut off by the second stop valve (102), and the oil circuit of the second actuator port (B1) is by the first stop valve
(101) it cuts off, corresponding power head motor (9) is floated；
Step S2：In step sl, the power head motor in floating (9), since float trap (105) works in upper, power
The first actuator port (A) of head horse up to (9) is connected with the second actuator port (B), the power head motor (9) and float trap
(105) minor loop is formed between, is dallied so as to the power head motor (9) be driven to float during power head rotation；
Step S3：The setting pressure of counterbalance valve (4) is higher than the Opening pressure of the first Fill valve (103) and the second Fill valve (104),
In step s 2, the power head motor (9) in idle running of floating has the leakage of hydraulic oil, when the of the power head motor (9)
When the pressure of one actuator port (A) or the second actuator port (B) is less than the setting pressure of counterbalance valve (4), reversal valve (6) oil return opening
(T) the repairing mouth (S) that the hydraulic oil to flow back at is pressurized backward corresponding shift valve block (1) through counterbalance valve (4) carries out repairing, fills into
The hydraulic oil of repairing mouth (S) is delivered to the power head motor (9) after the first Fill valve (103) or the second Fill valve (104)
First actuator port (A) or the second actuator port (B), the power head motor (9) is interior to be filled into hydraulic oil, to prevent the power head
Motor (9) is emptied damage.
5. a kind of rotary drilling rig, which is characterized in that including the power head multi gear level controlling system described in claim 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810058185.XA CN108150643B (en) | 2018-01-22 | 2018-01-22 | Gear shifting valve block, power head multi-gear control system and control method and rotary drilling rig |
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| CN201810058185.XA CN108150643B (en) | 2018-01-22 | 2018-01-22 | Gear shifting valve block, power head multi-gear control system and control method and rotary drilling rig |
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| CN108150643B CN108150643B (en) | 2023-07-18 |
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| CN111561486A (en) * | 2020-04-28 | 2020-08-21 | 中联重科股份有限公司 | Rotary speed change hydraulic circuit and vehicle |
| CN113280012A (en) * | 2021-06-29 | 2021-08-20 | 上海中联重科桩工机械有限公司 | Rotary motor and drilling machine control device |
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| Publication number | Publication date |
|---|---|
| CN108150643B (en) | 2023-07-18 |
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