CN108999818A - A kind of tunneling machine hydraulic system - Google Patents
A kind of tunneling machine hydraulic system Download PDFInfo
- Publication number
- CN108999818A CN108999818A CN201811147462.0A CN201811147462A CN108999818A CN 108999818 A CN108999818 A CN 108999818A CN 201811147462 A CN201811147462 A CN 201811147462A CN 108999818 A CN108999818 A CN 108999818A
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- Prior art keywords
- hydraulic system
- pump
- tunneling machine
- valve
- hydraulic
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- Pending
Links
- 230000005641 tunneling Effects 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000000151 deposition Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 9
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of tunneling machine hydraulic systems, it includes the first hydraulic system for needing accurately to adjust the speed for controlling the first mechanism action of excavation operation；For control conveying material operation the second mechanism action without the second hydraulic system for accurately adjusting the speed；Auxiliary hydraulic system for misting cooling depositing dust.The present invention can effectively solve the problems such as existing feeding conveying is uncoordinated, and misting cooling depositing dust irregularity and hydraulic system combined efficiency are low, circuit is complicated, element cost is high.
Description
Technical field
The present invention relates to coal mine roadway driving technology field, a kind of specifically tunneling machine hydraulic system.
Background technique
Development machine is the heavy mechanical equipment of coal mine and non-coal mine tunnel piercing.Hydraulic system is main group of development machine
At part, very crucial effect is played, according to the transmission requirement of development machine equipment and each mechanism, various Hydraulic Elements
A tunneling machine hydraulic system is just formed with pipeline is organically connected.It is using oil liquid as working media, utilizes hydraulic pump
Hydraulic energy is changed into mechanical energy, and then realizes the various movements of development machine.In tunneling machine hydraulic system, hydraulic system is most basic
Principle be exactly hydraulic internal pressure be it is equal, using oil pump generate certain internal pressure hydraulic oil, can be by hydraulic
Pipeline is transmitted to hydraulic executive component, such as hydraulic cylinder, high pressure oil will act on piston, so that the pressure at piston both ends
Power imbalance is so piston will move acting, and at this moment high pressure oil can act on the blade around arranged, band movable vane piece
The rotation of axis.Hydraulic system is exactly to transmit the device of pressure, and the carrier of pressure transmission is hydraulic oil, the liquid with certain pressure intensity
Will act on certain carrier and generate active force, development machine other than the rotary motion of cutterhead, remaining each section
Movement is all made of hydraulic drive.
As shown in Fig. 2, traditional tunneling machine hydraulic system is divided into two hydraulic, the control control of first via hydraulic system 4
Left and right walking, cutterhead lifting, cutterhead turns round, cutterhead is flexible, shovel board lifting, rear support lifting；Second tunnel hydraulic system 5
Control star-wheel motor, transport motor, spray action.And there is more problem in this way, for example the internal leakage of valve is big, between piece and grasp
Oil leak is easy at vertical pole, the problems such as and valve is more, installation dispersion, pipeline is more random.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of tunneling machine hydraulic system, can effectively solve on existing
Expect conveying is uncoordinated, and misting cooling depositing dust irregularity and hydraulic system combined efficiency are low, circuit is complicated, element cost is high etc.
Problem.
The technical solution used in the present invention is: it includes
The first hydraulic system that the first mechanism action for controlling excavation operation needs accurately to adjust the speed；
For control conveying material operation the second mechanism action without the second hydraulic system for accurately adjusting the speed；
Auxiliary hydraulic system for misting cooling depositing dust.
Preferably, the first hydraulic system includes constant power load sensitive variable pump and load-sensitive proportional reversing valve group, institute
Stating proportional reversing valve group includes multiple plate valves, is equipped with pressure compensator in each plate valve.
Preferably, the second hydraulic system includes duplex general power variable pump, throttle grverning commutation valve group and flow divider, described
Duplex general power variable pump includes star-wheel motor and conveying motor, and the duplex general power variable pump includes a co-rotor, and
Using axial plunger type variable capacity pump.
Preferably, auxiliary hydraulic system includes constant displacement pump and On-off rotary valve.
A kind of tunneling machine hydraulic system of the invention, advantage are as follows: tunneling machine hydraulic system is usual only in the prior art
It is divided into that two-way is hydraulic, the excavation operation of first via HYDRAULIC CONTROL SYSTEM development machine, such as walking, lifting, flexible and cutting；The
Hauling operations and spraying operation, the disadvantages such as two tunnel HYDRAULIC CONTROL SYSTEM planetmotors, transport motor are feeding conveying
Exercise not harmony, misting cooling and depositing dust operation irregularity etc., and the hydraulic system of development machine is divided into three groups, one group by the present invention
Control needs accurate the first actuating mechanism for adjusting control excavation operation；Another group of control is not necessarily to the second movement machine accurately adjusted
Structure, the second actuating mechanism are used to control material conveying；Last group control driving auxiliary movement mechanism, such as misting cooling and depositing dust
Operation.Three groups of system division of labor coordinated with each other, each mutually coordinated operation of mechanism, and misting cooling and depositing dust are smooth smoothly, in addition solve
The problems such as hydraulic system of having determined combined efficiency is low, circuit is complicated and element cost is high.
Detailed description of the invention
Fig. 1 is a kind of tunneling machine hydraulic system schematic diagram of the invention.
Fig. 2 is tunneling machine hydraulic system traditional scheme schematic diagram.
Wherein, the 1, first hydraulic system, 11, load-reacting pump, 12, proportional reversing valve group, the 2, second hydraulic system,
21, duplex general power variable pump, 22, throttle grverning commutation valve group, 23, flow divider, 3, auxiliary hydraulic system, 31, constant displacement pump,
32, rotary valve, 4, first via hydraulic system, the 5, second tunnel hydraulic system.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As shown in Figure 1, the present invention provides a kind of tunneling machine hydraulic system, it includes the first machine for controlling excavation operation
Structure acts the first hydraulic system 1 for needing accurately to adjust the speed, and pumps 11 Hes by the constant power load sensitive variable with high pressure cut-off
It is formed with pressure compensation and the multi-channel proportional reversal valve 12 of load-transducing function, constant power load sensitive variable pump 11 is by variable
Plunger pump and gear pump composition, plunger pump itself are matched with pressure compensator, load cell and load limiter with multi-way valve
It closes and uses, gear pump provides guide's hydraulic oil for pilot handle, and multi-way valve is load sensitive ratio commutation valve group 12, ratio commutation
Each plate valve is set in valve group 12 and connects and control each executing agency, there is independent pressure compensator inside every plate valve, it can be according to behaviour
The requirement (spool aperture) of author adjusts the output flow of each plate valve, and feeds back to pump and export corresponding flow, prevents system and overflows
It is comfortable, energy-efficient to reach operation for the power loss of stream, that is to say, that regardless of load changes, executive component can be obtained
To constant flow, while multi-execution component is simultaneously operable, and pressure, flow are unaffected mutually.
Further include for control the second mechanism action of conveying material operation without the second hydraulic system for accurately adjusting the speed
2, it is made of duplex general power variable pump 21 and throttle grverning the commutation valve group 22 exported with co-rotor, co-rotor output
Invariable power shaft orientation plunger variable pump, produced by axial plunger pump is moved back and forth in plunger hole using the plunger parallel with transmission shaft
Volume change come what is worked, since plunger and plunger hole are all circular pieces, can achieve very high class fit, because
This volumetric efficiency is high, to ensure that the flow of star-wheel motor and to convey the flow of motor equal, theoretically star-wheel motor and defeated
Send the discharge capacity of motor equal, revolving speed is equal, and stroking mechanism is synchronous.Star-wheel is two star-wheels, i.e., left star-wheel and the right side in the present embodiment
Star-wheel, output flow are adjusted by the sum of the load of star-wheel feeding and the load of scraper chain conveying are common, and 1:1 proportional diverter valve 23 ensure that
Two star-wheel motors operate synchronously；Reasonable matched design can guarantee that the speed of star-wheel feeding and scraper chain conveying is always same
Step, to reach efficient material conveying effect.
It further include the auxiliary hydraulic system 3 for misting cooling depositing dust, by constant displacement pump 31 (motor) and 32 groups of switch valve
At constant displacement pump 31 is changed to gear pump, is sprayed by cutterhead inner spraying nozzle, and the output flow for spraying gear pump can be protected
The constant interference without the operating system by front is held, therefore cooling pick dust-laying effect is good.
Working principle: the first hydraulic system 1 passes through a LS hydraulic pump (variable pump) and LS multi-way reversing valve group control driving
The left and right walking of machine, cutterhead lifting, cutterhead turns round, cutterhead is flexible, shovel board lifting, rear support lifting；Second hydraulic pressure system
Second hydraulic system 2 is divided into two-way by hydraulic pump (variable pump) and throttle grverning commutation valve group 22 and a flow divider 23 by system 2
It controls, controls the movement of left and right star-wheel all the way, another way controls crawler belt conveying movement and spare, and wherein flow divider 23 also assures
Two star-wheel motors operate synchronously；Auxiliary system 3 then controls humidifier by constant displacement pump 31 and On-off rotary valve 32, thus
For cooling and depositing dust.
The working principle of control valve: when spool is in middle position, motor or two chamber of oil cylinder are connected to oil return, and brake is in
On-position, motor or oil cylinder are failure to actuate.When spool is in up or down position (operating position), pressure fluid enters motor or oil
Cylinder, brake release braking, and forward or reverse, oil cylinder is stretched out or retracted motor.By taking running motor as an example, if left and right walking horse
Up to rotation can be such that machine moves forward or back in one direction simultaneously, if only one rotation of left and right running motor can make machine big
It is curved, if the rotation of left and right running motor a positive and a negative can make machine turn small curved.In order to keep each cylinder movement steady, in each oil cylinder
Balanced valve is provided at oil inlet and outlet, all to reduce the vibration during each cylinder efficient.
In addition, the flow for changing hydraulic circuit can make shipment and the matching of cutting production capacity.Due to the structure of quadruple valve
Equally, in spray operations, high-pressure stop valve is closed in track tensioning operation, load variation pump still has signal, at this moment
Meeting so that system and flow is redistributed, once convection amount increases, the speed for transporting scraper plate will be improved, be finally reached shipment with
Cutting production capacity is mutually matched.
When track tensioning, high-pressure stop valve is closed, control crank can promote or pull out either in
Position, in this way it is avoided that interior in valve lets out the slow relaxation for causing crawler belt.But if operation handle is at the position of tensioner, because
For load-reacting, pump just still load signal after the meeting, at this moment oil liquid will return in main system from track tensioning circuit, this
Sample will virtually increase the flow of star-wheel, so that speed be made to improve runner speed-raising.In high-pressure stop valve, in addition gasket
Positioning action will make the tensioner effect of crawler belt can be more preferable.
Hydraulic system after optimization pumps the form of 11 and load-sensitive proportional reversing valve group 12 using load-reacting.It is first
First telescopic oil cylinder is hydraulic original load variation on circuit, and telescopic oil cylinder cannot hold pressure, now after optimization can be with
When be parked on some operating position, thus to production and maintenance bring great convenience, effect also significantly improves, but also peace
Full production has guarantee.Secondly, not needing not only frequently to open using quadruple valve by the improvement to track tensioning cylinder system
Operation positioning, also protects quadruple valve, reduces labor intensity, to a certain extent when crawler belt has the sign of loosening, so that it may
High-pressure stop valve is directly opened, so that turgor cylinder tensioner, improves the effect of tensioner.Finally, being improved in hydraulic system
Afterwards, the delivered payload capability of star-wheel, which has, greatly improves, and reduces blocking phenomenon, meets the needs of production.
Tunneling machine hydraulic system not only makes its hydraulic system stable and reliable for performance after improvement, and failure rate greatly reduces,
But also the layout of its system is more reasonable, the operation of complete machine is more harmonious, and hydraulic system is improved to development machine at work
Guarantee is provided, reaches and improves work efficiency.
The LS mouth pressure signal of valve is compared by shuttle valve for operating pressure in every group of valve and takes maximum pressure value, and two groups
The LS mouth of valve is connect respectively on the LS mouth of 2 load-sensitive force variable pumps.Flow~pressure controller of pump can be according to executing member
Flow summation needed for part controls the swash angle position of pump.
This system matches 7 He of PSV552/230-3 type using import parts V30D140 load-sensitive formula duplex variable pump
PSV55/230-3 type 4, two groups of load-sensitive formula proportional reversing valve groups 12, a pump match one group of valve, system pipeline configuration letter
It is clean, compact, clear, convenient for assembling and maintenance.
Claims (4)
1. a kind of tunneling machine hydraulic system, which is characterized in that it includes
The first hydraulic system (1) that the first mechanism action for controlling excavation operation needs accurately to adjust the speed；
For control conveying material operation the second mechanism action without the second hydraulic system (2) for accurately adjusting the speed；
Auxiliary hydraulic system (3) for misting cooling depositing dust.
2. a kind of tunneling machine hydraulic system according to claim 1, it is characterised in that: the first hydraulic system (1) packet
It includes constant power load sensitive variable pump (11) and load-sensitive proportional reversing valve group (12), the proportional reversing valve group (12) includes
Multiple plate valves, each plate valve is interior to be equipped with pressure compensator.
3. a kind of tunneling machine hydraulic system according to claim 1, it is characterised in that: the second hydraulic system (2) packet
Include duplex general power variable pump (21), throttle grverning commutation valve group (22) and flow divider (23), the duplex general power variable pump
It (21) include star-wheel motor and conveying motor, the duplex general power variable pump (21) includes a co-rotor, and using axial
Plunger type variable capacity pump.
4. a kind of tunneling machine hydraulic system according to claim 1, it is characterised in that: auxiliary hydraulic system (3) packet
Include constant displacement pump (31) and On-off rotary valve (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811147462.0A CN108999818A (en) | 2018-09-29 | 2018-09-29 | A kind of tunneling machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811147462.0A CN108999818A (en) | 2018-09-29 | 2018-09-29 | A kind of tunneling machine hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108999818A true CN108999818A (en) | 2018-12-14 |
Family
ID=64589050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811147462.0A Pending CN108999818A (en) | 2018-09-29 | 2018-09-29 | A kind of tunneling machine hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669314A (en) * | 2021-08-05 | 2021-11-19 | 天津工程机械研究院有限公司 | Hydraulic system of pure electric engineering vehicle |
| CN115163597A (en) * | 2022-07-07 | 2022-10-11 | 中铁工程装备集团有限公司 | Stable hydraulic system for cutting part of cantilever heading machine and control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2094864A (en) * | 1981-03-17 | 1982-09-22 | Gewerk Eisenhuette Westfalia | Hydraulic control systems for mineral mining installations |
| RU2026984C1 (en) * | 1992-10-01 | 1995-01-20 | Центральный научно-исследовательский и проектно-конструкторский институт проходческих машин и комплексов для угольной, горной промышленности и подземного строительства | Hydraulic system of running gear of tracked tunnelling machines |
| RU2060386C1 (en) * | 1994-04-27 | 1996-05-20 | Акционерное общество "ТЕХНОЭКС" | Hydraulic system of mining machine |
| CN101191507A (en) * | 2007-12-21 | 2008-06-04 | 沈阳矿山机械（集团）有限责任公司 | Hydraulic system for tunneling machine |
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| CN101768990A (en) * | 2010-02-06 | 2010-07-07 | 山东众友工程机械有限公司 | Hydraulic constant power control device for excavator |
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-
2018
- 2018-09-29 CN CN201811147462.0A patent/CN108999818A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2094864A (en) * | 1981-03-17 | 1982-09-22 | Gewerk Eisenhuette Westfalia | Hydraulic control systems for mineral mining installations |
| RU2026984C1 (en) * | 1992-10-01 | 1995-01-20 | Центральный научно-исследовательский и проектно-конструкторский институт проходческих машин и комплексов для угольной, горной промышленности и подземного строительства | Hydraulic system of running gear of tracked tunnelling machines |
| RU2060386C1 (en) * | 1994-04-27 | 1996-05-20 | Акционерное общество "ТЕХНОЭКС" | Hydraulic system of mining machine |
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| CN101191507A (en) * | 2007-12-21 | 2008-06-04 | 沈阳矿山机械（集团）有限责任公司 | Hydraulic system for tunneling machine |
| CN101768990A (en) * | 2010-02-06 | 2010-07-07 | 山东众友工程机械有限公司 | Hydraulic constant power control device for excavator |
| CN202520705U (en) * | 2012-04-26 | 2012-11-07 | 西安煤矿机械有限公司 | Heading machine hydraulic system with cooling and oil supplement functions |
| CN208950993U (en) * | 2018-09-29 | 2019-06-07 | 宁波精壹机械制造有限公司 | A kind of tunneling machine hydraulic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669314A (en) * | 2021-08-05 | 2021-11-19 | 天津工程机械研究院有限公司 | Hydraulic system of pure electric engineering vehicle |
| CN115163597A (en) * | 2022-07-07 | 2022-10-11 | 中铁工程装备集团有限公司 | Stable hydraulic system for cutting part of cantilever heading machine and control method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |
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| RJ01 | Rejection of invention patent application after publication |