CN209704952U - A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine - Google Patents
A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine Download PDFInfo
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- CN209704952U CN209704952U CN201920605570.1U CN201920605570U CN209704952U CN 209704952 U CN209704952 U CN 209704952U CN 201920605570 U CN201920605570 U CN 201920605570U CN 209704952 U CN209704952 U CN 209704952U
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Abstract
The utility model provides the load-sensitive adjustable hydraulic system and drilling machine of a kind of drilling machine, including hydraulic pump, switching valve, commutation valve group and executing agency；Hydraulic pump is load sensitive pump；When the working oil of switching valve enters commutation valve group, the oil inlet P for the valve group that commutates and oil outlet A are blocked, and the feedback hydraulic fluid port LS for the valve group that commutates and external feedback hydraulic fluid port LS1 is blocked, so that hydraulic pump is to executing agency's fuel feeding, and stop to other systems fuel feeding, to by the load feedback of executing agency to hydraulic pump, hydraulic pump is according to the load regulation oil pump capacity of executing agency；Only allow hydraulic pump to executing agency's fuel feeding, only allow the load feedback of executing agency to hydraulic pump, purpose is that multiple systems in drilling machine share hydraulic pump, but executing agency is mutually indepedent with other systems, it can interlock, executing agency has different loads under different operating conditions, when loading low, hydraulic pump is fed back to by feeding back oil circuit, hydraulic pump adjusts oil pump capacity as needed.
Description
Technical field
The utility model relates to drilling rig technique fields, specifically, being a kind of load-sensitive adjustable hydraulic system of drilling machine
System and drilling machine.
Background technique
Hydraulic drill rig is the production equipment generallyd use in coal mine gas drainage operation.The hydraulic system of drilling machine is using liquid
Press pump converts mechanical energy into the pressure energy of liquid, is turned by the liquid pressure energy of various control valves, pipeline and Hydraulic Elements
Mechanical energy is turned to, working mechanism is driven, realizes straight reciprocating motion or rotary motion；The design quality of the hydraulic system of drilling machine is right
The overall performance of hydraulic drill rig plays conclusive effect.
In existing design, when by load feedback to the hydraulic pump of the forward and backward oil circuit of two running motors of hydraulic drill rig,
The scheme of use is 4 road binders to be accessed to the feedback hydraulic fluid port of hydraulic pump simultaneously, and check valve is arranged in 4 road binders with load-sensitive valve,
Such scheme cost is high, and oil circuit is complicated.
Utility model content
The purpose of this utility model is that proposing the load-sensitive adjustable hydraulic system and drilling machine of a kind of drilling machine, it is intended to solve
When certainly in the prior art, by load feedback to the hydraulic pump of the forward and backward oil circuit of two running motors of hydraulic drill rig, use
Scheme is 4 road binders to be accessed to the feedback hydraulic fluid port of hydraulic pump simultaneously, and check valve, Ci Zhongfang is arranged in 4 road binders with load-sensitive valve
Case cost is high, the problem of oil circuit complexity.
In order to solve the above technical problems, the utility model provides a kind of load-sensitive adjustable hydraulic system of drilling machine, packet
It includes:
Hydraulic pump, switching valve, commutation valve group and executing agency；
The hydraulic pump is load sensitive pump, and the hydraulic pump includes oil outlet B and control port X；
The hydraulic fluid port of the commutation valve group includes oil inlet P, feedback hydraulic fluid port LS, oil outlet A, external feedback hydraulic fluid port LS1, conversion
Hydraulic fluid port a and actuator port A1, A2, B1, B2；
The oil outlet B of the hydraulic pump is connect with the oil inlet P of the commutation valve group；
The control port X of the hydraulic pump is connect with the feedback hydraulic fluid port LS of the commutation valve group；
The oil outlet A connection other systems of the commutation valve group；
The external feedback hydraulic fluid port LS1 of the commutation valve group is connect with the feedback hydraulic fluid port of the other systems；
The conversion hydraulic fluid port a of the commutation valve group is connect with the actuator port b of the switching valve；
Actuator port A1, A2, B1, B2 of the commutation valve group are connect with the executing agency；
When the working oil of the switching valve enter the commutation valve group when, by it is described commutate valve group oil inlet P with it is fuel-displaced
Mouthful A is blocked, and by feedback hydraulic fluid port LS and external feedback hydraulic fluid port the LS1 blocking of the commutation valve group, so that the hydraulic pump is to institute
Executing agency's fuel feeding is stated, and is stopped to the other systems fuel feeding, thus by the load feedback of the executing agency to the liquid
Press pump, the hydraulic pump is according to the load regulation oil pump capacity of the executing agency.
Optionally, when the switching valve does not have working oil to enter the commutation valve group, the oil inlet P of the commutation valve group
It is connected to oil outlet A, and the feedback hydraulic fluid port LS of the commutation valve group is connected to external feedback hydraulic fluid port LS1, so that the hydraulic pump
To the other systems fuel feeding, and stop to executing agency's fuel feeding, thus by the load feedback of the other systems to institute
State hydraulic pump, the hydraulic pump is according to the load regulation oil pump capacity of the other systems.
Optionally, the commutation valve group include combination valve group, and respectively with it is described combine valve group connect overflow valve and
First commutation valve group；The combination valve group is also connect with the hydraulic pump, the switching valve, the other systems respectively；It is described
First commutation valve group includes two the first reversal valves parallel with one another, and described two first reversal valves and the executing agency connect
It connects；The overflow valve is in parallel with described two first reversal valves, and described two first reversal valves are connected with the executing agency；Institute
Overflow valve is stated for controlling system pressure below preset pressure threshold value.
Optionally, the combination valve group includes two-position five-way valve and throttle valve, and the combination valve group includes two-position five-way valve
And throttle valve, the two-position five-way valve include hydraulic fluid port X1, X2, X3, X4, X5, X1, X2, X3 on-off working connection is described
X4, X5 on-off feed back oil circuit；The X1 and the oil inlet P are equivalent, and the X2 and the oil outlet A are equivalent, the X4 with
The feedback hydraulic fluid port LS is equivalent, and the X5 and the external feedback hydraulic fluid port LS1 are equivalent；
When the two-position five-way valve is in anteposition, the X1 leads to X2, and X4 leads to X5, and logical described other of the hydraulic pump are
System；
When the two-position five-way valve is in rear position, the X1 leads to X3, X4, and the hydraulic pump leads to the executing agency.
Optionally, the combination valve group includes the second reversal valve, third reversal valve and throttle valve；
One end of second reversal valve and third reversal valve is connect with the actuator port b, and the other end is equipped with multiple
Position spring；
When second reversal valve and third reversal valve are in anteposition, the oil inlet P, the feedback hydraulic fluid port LS connect
Lead to the other systems；
When second reversal valve and third reversal valve are in rear position, the oil inlet P is connected to after the throttle valve
To the executing agency, the feedback hydraulic fluid port LS is communicated to the executing agency.
Optionally, the first commutation valve group includes hand-operated direction valve perhaps solenoid directional control valve or electro-hydraulic reversing valve,
Or hydraulic directional valve；When the first commutation valve group is hydraulic directional valve, the hydraulic directional valve is three six-way valves, institute
The hydraulic fluid port for stating commutation valve group further includes control port a1, a2, b1, b2, and the load-sensitive adjustable hydraulic system further includes elder generation
Pilot valve group, the hydraulic fluid port of the pilot valves include actuator port c1, c2, d1, d2, control port a1, a2 of the commutation valve group
Respectively with actuator port c1, c2 of the pilot valves, control port b1, b2 of the commutation valve group respectively with the pilot valve
Actuator port d1, d2 of group.
Optionally, the other systems include system of drilling.
Optionally, the executing agency includes left running motor and right running motor；The rotating forward oil of the left running motor
Mouthful and reversion hydraulic fluid port respectively with it is described commutation valve group actuator port A1, A2 connect, the rotating forward hydraulic fluid port of the right running motor with
Reversion hydraulic fluid port is connected with actuator port B1, B2 of the commutation valve group respectively.
Optionally, the hydraulic fluid port of the commutation valve group further includes pressure tap G, for monitoring pressure.
In order to solve the above technical problems, the utility model also provides a kind of drilling machine, including load described in any of the above embodiments
Sensitive adjustable hydraulic system.
Beneficial effect
The utility model provides the load-sensitive adjustable hydraulic system and drilling machine of a kind of drilling machine, and the load-sensitive is adjustable
Formula hydraulic system includes: hydraulic pump, switching valve, commutation valve group and executing agency；Hydraulic pump is load sensitive pump, and hydraulic pump includes
Oil outlet B and control port X；The hydraulic fluid port of commutation valve group includes oil inlet P, feedback hydraulic fluid port LS, oil outlet A, external feedback hydraulic fluid port
LS1, conversion hydraulic fluid port a and actuator port A1, A2, B1, B2；The oil outlet B of hydraulic pump is connect with the oil inlet P of commutation valve group；Liquid
The control port X of press pump is connect with the feedback hydraulic fluid port LS of commutation valve group；The oil outlet A connection other systems for the valve group that commutates；Commutation
The external feedback hydraulic fluid port LS1 of valve group and the feedback hydraulic fluid port of other systems connect；The work of conversion the hydraulic fluid port a and switching valve of the valve group that commutates
Make hydraulic fluid port b connection；Actuator port A1, A2, B1, B2 of the valve group that commutates and executing agency connect；When the working oil of switching valve enters
When the valve group that commutates, the oil inlet P for the valve group that commutates and oil outlet A are blocked, and by the feedback hydraulic fluid port LS and outer counter of the valve group that commutates
It presents hydraulic fluid port LS1 to block, so that hydraulic pump is to executing agency's fuel feeding, and stops to other systems fuel feeding, thus by executing agency
Load feedback is to hydraulic pump, and hydraulic pump is according to the load regulation oil pump capacity of executing agency；Hydraulic pump is only allowed to supply to executing agency
Oil only allows the load feedback of executing agency to hydraulic pump, it is therefore an objective to which multiple systems in drilling machine share hydraulic pump, but executing agency
It is mutually indepedent with other systems, it can interlock, executing agency has different loads under different operating conditions, when loading low, leads to
Cross feedback oil circuit and feed back to hydraulic pump, hydraulic pump adjusts oil pump capacity as needed, such as in the standby state, power loss compared with
Low, efficiency is much higher than the hydraulic system in existing design.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained such as these attached drawings.
Fig. 1 is a kind of schematic diagram of the load-sensitive adjustable hydraulic system of drilling machine provided by the embodiment of the utility model；
Fig. 2 is a kind of schematic diagram for combining valve group provided by the embodiment of the utility model；
Appended drawing reference involved in attached drawing and component part are as follows:
Hydraulic pump 1, switching valve 2, commutate valve group 3, pilot valves 4, executing agency 5, and fuel tank 6 combines valve group 31, overflow valve
32, the first commutation valve group 33, two-position five-way valve 311, throttle valve 312, the second reversal valve 31111, third reversal valve 31112, a left side
Running motor 51, right running motor 52；
Oil outlet B, the control port X of hydraulic pump 1；
Actuator port b, oil inlet p, the oil return opening t of switching valve 2；
The oil inlet P for the valve group 3 that commutates, feedback hydraulic fluid port LS, oil outlet A, external feedback hydraulic fluid port LS1, oil return inlet T, pressure tap
G, hydraulic fluid port a, actuator port A1, A2, B1, B2 and control port a1, a2, b1, b2 are converted；
Hydraulic fluid port X1, X2, X3, X4, X5 of two-position five-way valve 311；Hydraulic fluid port Y4, Y5 of second reversal valve 31111；Third commutation
Hydraulic fluid port Y1, Y2, Y3 of valve 31112；
Oil inlet p1, oil return opening t1, actuator port c1, c2, d1, d2 of pilot valves 4；
Rotating forward hydraulic fluid port C1, the reversion hydraulic fluid port C2 of left running motor 51；Rotating forward hydraulic fluid port D1, the reversion hydraulic fluid port of right running motor 52
D2。
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It can not be adjusted to solve the output flow of the hydraulic pump in the hydraulic drill rig in existing design, lead to power loss
High problem, the present embodiment will provide a kind of load-sensitive adjustable hydraulic system of drilling machine, be the present embodiment referring to Fig. 1, Fig. 1
A kind of schematic diagram of the load-sensitive adjustable hydraulic system of the drilling machine provided, the load-sensitive adjustable hydraulic system of the drilling machine
Include:
Hydraulic pump 1, switching valve 2, commutation valve group 3 and executing agency 5；
Hydraulic pump 1 is load sensitive pump, and hydraulic pump 1 includes oil outlet B and control port X；
The hydraulic fluid port of commutation valve group 3 includes oil inlet P, feedback hydraulic fluid port LS, oil outlet A, external feedback hydraulic fluid port LS1, conversion oil
Mouth a and actuator port A1, A2, B1, B2；
The oil outlet B of hydraulic pump 1 is connect with the oil inlet P of commutation valve group 3；
The control port X of hydraulic pump 1 is connect with the feedback hydraulic fluid port LS of commutation valve group 3；
The oil outlet A connection other systems for the valve group 3 that commutates；Pressure oil is provided for hydraulic pump 1 for other systems；
The external feedback hydraulic fluid port LS1 for the valve group 3 that commutates and the feedback hydraulic fluid port of other systems connect；For bearing other systems
Load feeds back to hydraulic pump 1, to adjust the output flow of hydraulic pump 1；
The conversion hydraulic fluid port a of commutation valve group 3 is connect with the actuator port b of switching valve 2；
Actuator port A1, A2, B1, B2 of the valve group 3 that commutates and executing agency 5 connect；
When the working oil of switching valve 2 enters commutation valve group 3, the oil inlet P for the valve group 3 that commutates and oil outlet A are blocked, and
By feedback hydraulic fluid port LS and external feedback hydraulic fluid port the LS1 blocking for the valve group 3 that commutates, so that hydraulic pump 1 is to 5 fuel feeding of executing agency, and stop
Only to other systems fuel feeding, so that hydraulic pump 1 is according to the negative of executing agency 5 by the load feedback of executing agency 5 to hydraulic pump 1
It carries and adjusts oil pump capacity；Hydraulic pump 1 is only allowed to 5 fuel feeding of executing agency, only allows the load feedback of executing agency 5 to hydraulic pump 1, mesh
Be that multiple systems in drilling machine share hydraulic pump 1, but executing agency 5 and other systems are mutually indepedent, can interlock, executing agency
5 have different loads under different operating conditions, when loading low, feed back to hydraulic pump 1 by feeding back oil circuit, and hydraulic pump 1
According to needing to adjust oil pump capacity, such as in the standby state, power loss is lower, and efficiency is much higher than the hydraulic pressure system in existing design
System.
Optionally, in the present embodiment, when switching valve 2 without working oil enter commutation valve group 3 when, commutation valve group 3 into
Hydraulic fluid port P is connected to oil outlet A, and commutate valve group 3 feedback hydraulic fluid port LS be connected to external feedback hydraulic fluid port LS1 so that hydraulic pump 1 to
Other systems fuel feeding, and stop to 5 fuel feeding of executing agency, thus by the load feedback of other systems to hydraulic pump 1, hydraulic pump 1
According to the load regulation oil pump capacity of other systems.
Switching valve 2 includes actuator port b, oil inlet p, oil return opening t.The valve group 3 that commutates further includes oil return inlet T.
Optionally, in the present embodiment, commutation valve group 3 include combination valve group 31, and respectively with combine valve group 31 connection
Overflow valve 32 and first commutation valve group 33；Combination valve group 31 is also connect with hydraulic pump 1, switching valve 2, other systems respectively；The
One commutation valve group 33 includes two the first reversal valves parallel with one another, and two the first reversal valves and executing agency 5 connect；Overflow valve
32 is in parallel with two the first reversal valves, and two the first reversal valves and executing agency 5 connect；Overflow valve 32 is used for system pressure control
System is below preset pressure threshold value.
Optionally, in the present embodiment, the first reversal valve is three six-way valves.
Optionally, in one embodiment, referring to Fig. 1, combining valve group 31 includes two-position five-way valve 311 and throttle valve
312, two-position five-way valve 311 includes hydraulic fluid port X1, X2, X3, X4, X5, logical (or disconnected) working connection of X1, X2, X3, X4, X5 logical (or disconnected)
Feed back oil circuit；X1 is equivalent with oil inlet P, and X2 and oil outlet A are equivalent, and X4 and feedback hydraulic fluid port LS are equivalent, X5 and external feedback hydraulic fluid port
LS1 is equivalent；
When two-position five-way valve 311 is in anteposition, X1 leads to X2, and X4 leads to X5, and hydraulic pump 1 leads to other systems；
When two-position five-way valve 311 is in rear position, X1 leads to X3, X4, and hydraulic pump 1 leads to executing agency 5.
Optionally, in another embodiment, referring to fig. 2, combination valve group 31 includes the second reversal valve 31111, third
Reversal valve 31112 and throttle valve 312；Second reversal valve 31111 and third reversal valve 31112 are all two position two-way valves；Two valves
Simultaneously operation；
One end of second reversal valve 31111 and third reversal valve 31112 is connect with actuator port b, and the other end is equipped with
Reset spring；
When second reversal valve 31111 and third reversal valve 31112 are in anteposition, oil inlet P, feedback hydraulic fluid port LS are connected to
To other systems；
When second reversal valve 31111 and third reversal valve 31112 are in rear position, oil inlet P is connected to after throttle valve 312
To executing agency 5, feeds back hydraulic fluid port LS and be communicated to executing agency 5.
In shown in Fig. 2, when the second reversal valve 31111 and third reversal valve 31112 are in anteposition, Y1 leads to Y2, and Y4 leads to Y5,
It drills system connectivity；When second reversal valve 31111 and third reversal valve 31112 are in rear position, Y1 leads to Y3, and Y4 leads to Y3, walking
System connectivity.
Throttle valve 312 has handwheel, regulating system flow is used for, with the operating rate of adjustment actuating mechanism 5.
Optionally, in the present embodiment, first commutation valve group 33 include hand-operated direction valve perhaps solenoid directional control valve or
Electro-hydraulic reversing valve or hydraulic directional valve；When the first commutation valve group 33 is hydraulic directional valve, hydraulic directional valve is three six logical
The hydraulic fluid port of valve, commutation valve group 3 further includes control port a1, a2, b1, b2, and load-sensitive adjustable hydraulic system further includes guide
Valve group 4, the hydraulic fluid port of pilot valves 4 include actuator port c1, c2, d1, d2, commutate valve group 3 control port a1, a2 respectively with elder generation
Actuator port c1, c2 of pilot valve group 4, commutate valve group 3 control port b1, b2 respectively with the actuator port d1 of pilot valves 4,
d2.The work of hydraulic directional valve is controlled by pilot valves 4.
Pilot valves 4 further include oil inlet p1, oil return opening t1.
Optionally, in the present embodiment, other systems include system of drilling.
Optionally, in the present embodiment, executing agency 5 includes left running motor 51 and right running motor 52；Left lateral is galloped along on horseback
Rotating forward hydraulic fluid port C1 and reversion hydraulic fluid port C2 up to 51 are connected with actuator port A1, A2 of commutation valve group 3 respectively, right running motor 52
It rotates forward hydraulic fluid port D1 and is connected respectively with actuator port B1, B2 of commutation valve group 3 with reversion hydraulic fluid port D2.
System drill for realizing the functions such as drill；Executing agency 5 is running gear, and running gear includes left running motor
51 and right running motor 52, running gear can realize the functions such as advance, retrogressing, steering.Drilling machine can not walk when drilling, drilling machine row
It can not drill when walking.When switching valve 2 has working oil to enter commutation valve group 3, only allow hydraulic pump 1 to running gear fuel feeding, it is hydraulic
Pump 1 stops only allowing the load feedback of running gear to hydraulic pump 1, hydraulic pump 1 is according to the negative of running gear to system fuel feeding of drilling
It carries and adjusts oil pump capacity；
When switching valve 2 enters commutation valve group 3 without working oil, only allow hydraulic pump 1 to system fuel feeding of drilling, hydraulic pump 1
Stop to running gear fuel feeding, only allow the load feedback for the system of drilling to hydraulic pump 1, hydraulic pump 1 is according to the load of the system of drilling
Adjust oil pump capacity.
Optionally, in the present embodiment, the hydraulic fluid port for the valve group 3 that commutates further includes pressure tap G, for monitoring pressure.Pressure tap G
The function of monitoring pressure herein, device for pressure measurement such as pressure gauge, pressure can be realized by connecting with device for pressure measurement
Measuring instrument, pressure sensor etc..
In the present embodiment, fuel tank 6 is to 1 fuel feeding of hydraulic pump, while receiving each system oil return.
In order to solve the above technical problems, the utility model also provides a kind of drilling machine, the drilling machine including any of the above-described is born
Carry sensitive adjustable hydraulic system.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel can also make several improvement and supplement without departing from the principle of this utility model, these are improved and supplement
Also it should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of load-sensitive adjustable hydraulic system of drilling machine characterized by comprising hydraulic pump, switching valve, commutation valve group
And executing agency；
The hydraulic pump is load sensitive pump, and the hydraulic pump includes oil outlet B and control port X；
The hydraulic fluid port of the commutation valve group includes oil inlet P, feedback hydraulic fluid port LS, oil outlet A, external feedback hydraulic fluid port LS1, conversion hydraulic fluid port
A and actuator port A1, A2, B1, B2；
The oil outlet B of the hydraulic pump is connect with the oil inlet P of the commutation valve group；
The control port X of the hydraulic pump is connect with the feedback hydraulic fluid port LS of the commutation valve group；
The oil outlet A connection other systems of the commutation valve group；
The external feedback hydraulic fluid port LS1 of the commutation valve group is connect with the feedback hydraulic fluid port of the other systems；
The conversion hydraulic fluid port a of the commutation valve group is connect with the actuator port b of the switching valve；
Actuator port A1, A2, B1, B2 of the commutation valve group are connect with the executing agency；
When the working oil of the switching valve enters the commutation valve group, the oil inlet P of the commutation valve group and oil outlet A are hindered
It is disconnected, and by feedback hydraulic fluid port LS and external feedback hydraulic fluid port the LS1 blocking of the commutation valve group, so that the hydraulic pump is to the execution
Mechanism fuel feeding, and stop to the other systems fuel feeding, thus by the load feedback of the executing agency to the hydraulic pump, institute
Hydraulic pump is stated according to the load regulation oil pump capacity of the executing agency.
2. load-sensitive adjustable hydraulic system according to claim 1, which is characterized in that when the switching valve does not have work
When work oil enters the commutation valve group, the oil inlet P of the commutation valve group is connected to oil outlet A, and the commutation valve group is anti-
Feedback hydraulic fluid port LS is connected to external feedback hydraulic fluid port LS1, so that the hydraulic pump is to the other systems fuel feeding, and stops holding to described
Row mechanism fuel feeding, so that by the load feedback of the other systems to the hydraulic pump, the hydraulic pump is according to described other
The load regulation oil pump capacity of system.
3. load-sensitive adjustable hydraulic system according to claim 1, which is characterized in that the commutation valve group includes group
Valve group is closed, and the valve group that commutates respectively with the overflow valve for combining valve group connection and first；The combination valve group also respectively with
The hydraulic pump, the switching valve, other systems connection；The first commutation valve group includes two first parallel with one another
Reversal valve, described two first reversal valves are connected with the executing agency；The overflow valve and described two first reversal valves are simultaneously
Connection, described two first reversal valves are connected with the executing agency；The overflow valve is used for system pressure control in default pressure
Below force threshold.
4. load-sensitive adjustable hydraulic system according to claim 3, which is characterized in that the combination valve group includes two
Position five-way valve and throttle valve, the two-position five-way valve include hydraulic fluid port X1, X2, X3, X4, X5, the main oil of X1, X2, X3 on-off
Road, X4, X5 on-off feed back oil circuit；The X1 and the oil inlet P are equivalent, and the X2 and the oil outlet A are equivalent, institute
It states X4 and the feedback hydraulic fluid port LS is equivalent, the X5 and the external feedback hydraulic fluid port LS1 are equivalent；
When the two-position five-way valve is in anteposition, the X1 leads to X2, and X4 leads to X5, and the hydraulic pump leads to the other systems；
When the two-position five-way valve is in rear position, the X1 leads to X3, X4, and the hydraulic pump leads to the executing agency.
5. load-sensitive adjustable hydraulic system according to claim 3, which is characterized in that the combination valve group includes the
Two reversal valves, third reversal valve and throttle valve；
One end of second reversal valve and third reversal valve is connect with the actuator port b, and the other end is equipped with reset bullet
Spring；
When second reversal valve and third reversal valve are in anteposition, the oil inlet P, the feedback hydraulic fluid port LS are communicated to
The other systems；
When second reversal valve and third reversal valve are in rear position, the oil inlet P is communicated to institute after the throttle valve
Executing agency is stated, the feedback hydraulic fluid port LS is communicated to the executing agency.
6. load-sensitive adjustable hydraulic system according to claim 3, which is characterized in that the first commutation valve group packet
Include hand-operated direction valve perhaps solenoid directional control valve perhaps electro-hydraulic reversing valve or hydraulic directional valve；When the first commutation valve group
When for hydraulic directional valve, the hydraulic directional valve is three six-way valves, the hydraulic fluid port of the commutation valve group further include control port a1,
A2, b1, b2, the load-sensitive adjustable hydraulic system further includes pilot valves, and the hydraulic fluid port of the pilot valves includes work
Hydraulic fluid port c1, c2, d1, d2, control port a1, a2 of the commutation valve group respectively with actuator port c1, c2 of the pilot valves,
It is described commutation valve group control port b1, b2 respectively with actuator port d1, d2 of the pilot valves.
7. load-sensitive adjustable hydraulic system according to any one of claims 1 to 6, which is characterized in that it is described other
System includes system of drilling.
8. load-sensitive adjustable hydraulic system according to any one of claims 1 to 6, which is characterized in that the execution
Mechanism includes left running motor and right running motor；The rotating forward hydraulic fluid port and reversion hydraulic fluid port of the left running motor are changed with described respectively
Connected to actuator port A1, A2 of valve group, the rotating forward hydraulic fluid port of the right running motor and reversion hydraulic fluid port respectively with the reversal valve
Actuator port B1, B2 connection of group.
9. load-sensitive adjustable hydraulic system according to any one of claims 1 to 6, which is characterized in that the commutation
The hydraulic fluid port of valve group further includes pressure tap G, for monitoring pressure.
10. a kind of drilling machine, which is characterized in that including load-sensitive adjustable hydraulic as described in any one of claim 1 to 9 system
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920605570.1U CN209704952U (en) | 2019-04-29 | 2019-04-29 | A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920605570.1U CN209704952U (en) | 2019-04-29 | 2019-04-29 | A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine |
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| CN209704952U true CN209704952U (en) | 2019-11-29 |
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ID=68649226
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| CN201920605570.1U Active CN209704952U (en) | 2019-04-29 | 2019-04-29 | A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005649A (en) * | 2019-04-29 | 2019-07-12 | 重庆平山矿山机电设备有限公司 | A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine |
-
2019
- 2019-04-29 CN CN201920605570.1U patent/CN209704952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005649A (en) * | 2019-04-29 | 2019-07-12 | 重庆平山矿山机电设备有限公司 | A kind of the load-sensitive adjustable hydraulic system and drilling machine of drilling machine |
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Address after: 401320 600 nanhu road, NANPENG street, Banan District, Chongqing Patentee after: Chongqing Pingshan Electromechanical Equipment Co.,Ltd. Address before: 401320 600 nanhu road, NANPENG street, Banan District, Chongqing Patentee before: CHONGQING PINGSHAN MINING ELECTROMECHANICAL EQUIPMENT Co.,Ltd. |