CN100520087C - Rotating speed variable driving shield cutterhead energy-saving hydraulic control system - Google Patents
Rotating speed variable driving shield cutterhead energy-saving hydraulic control system Download PDFInfo
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- CN100520087C CN100520087C CNB2008100590785A CN200810059078A CN100520087C CN 100520087 C CN100520087 C CN 100520087C CN B2008100590785 A CNB2008100590785 A CN B2008100590785A CN 200810059078 A CN200810059078 A CN 200810059078A CN 100520087 C CN100520087 C CN 100520087C
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- way valve
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- 239000012530 fluid Substances 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 20
- 230000002457 bidirectional effect Effects 0.000 claims description 18
- 239000002828 fuel tank Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 64
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a variable speed drive shield disc cutter energy saving hydraulic control system, which comprises a main hydraulic circuit consisting of a variable speed motor, a two-way hydraulic pump, a one-way valve, a hydraulic motor, a hydraulic lock and a change valve; and a feed circuit. The output rotation speed of an asynchronous motor driving the two-way hydraulic pump is variable speed controlled. The output signal of a rotary speed controller is adjusted in real time according to the rotation speed required to cut earth by a disc cutter to change the rotation speed of the asynchronous motor, thus controlling the output flow of the two-way hydraulic pump and driving the hydraulic motor to output the moment and the rotation speed that the disc cutter requires to overcome the load. The main hydraulic circuit adopts a closed type hydraulic circuit, and directly feeds the oil of the oil discharge outlet of the hydraulic motor into the inlet port of the motor through the two-way hydraulic pump, thus reducing the volume of a hydraulic system pumping station. Two stages of high and low working pressure are provided so that the shield disc cutter can work on two different geological conditions of soft ground and hard rock. By adopting variable speed control, the output flow of the hydraulic pump is matched with the load power of the disc cutter, thus significantly saving the energy.
Description
Technical field
The present invention relates to fluid pressure actuator, especially relate to a kind of rotating speed variable driving shield cutterhead energy-saving hydraulic control system.
Background technique
The shield cutter drive system is the important component part of shield machine, is bearing the task that the cutterhead rotary cutting excavation face soil body stirs the soil body in the sealed compartment that drives.Have that power is big, the characteristics of variable power wide ranges.The drive system of cutterhead must have high reliability and good operating characteristics, if adopt the valve horse-controlling to reach hydraulic driving, then system power will be by required peak output design, running under the underload operating mode, the loop exists bigger spill losses and restriction loss, and system effectiveness is low, and a large amount of power will dissipate by the form of heat, make system's heating serious, and then influence shield structure fltting speed.
The variable speed hydraulic power transmission can be come the input flow rate of regulator solution press pump according to the need of work of load, no restriction loss, thereby embodied than the higher energy-saving effect of valve control hydraulic system.In addition, become displacement control with tradition and compare, since little when the friction equal loss of oil hydraulic pump and motor is all than high speed under the low cruise state, so bigger energy-saving potential is arranged.Variable speed volumetric speed control technology is by changing the driven pump rotating speed of motor, the size of regulating POF, thereby the adjusting of realization load operation speed, the demand of suitable shield cutter operating mode.
Summary of the invention
The object of the present invention is to provide a kind of rotating speed variable driving shield cutterhead energy-saving hydraulic control system, adopt the shield cutter driving of variable speed technology realization volumetric speed control to use the Closed Hydraulic control system, but system's output torque and rotating speed timely adjustment are to satisfy the varying duty need of work.
The technical solution adopted in the present invention is:
Variable speed motor in its major loop links to each other with the bidirectional hydraulic pump through coupling; First one-way valve is connected in series mutually with the filler opening of second one-way valve, and the 3rd one-way valve is connected in series mutually with the oil outlet of the 4th one-way valve; The filler opening of one end of bidirectional hydraulic pump and the oil outlet of first one-way valve, the 3rd one-way valve and connect after, be connected in series first Pilot operated check valve and link to each other with a hydraulic fluid port of oil hydraulic motor; The filler opening of the oil outlet of the other end of bidirectional hydraulic pump and second one-way valve, the 4th one-way valve and connect after, be connected in series second Pilot operated check valve and link to each other with another hydraulic fluid port of oil hydraulic motor; After the filler opening of high-pressure overflow valve and the filler opening of low pressure relief valve pass through three position four-way directional control valve A mouth and B mouth respectively, be connected with the oil outlet P8 mouth of the 3rd one-way valve, the oil outlet P6 mouth of the 4th one-way valve, the oil outlet of high-pressure overflow valve is connected with fuel tank with the oil outlet of low pressure relief valve; 3 mouthfuls of the oil inlet P of 1 mouthful of the oil inlet P of first one-way valve and second one-way valve link to each other with feed circuit.
Described feed circuit, its motor links to each other with slippage pump, one termination fuel tank of slippage pump, the other end of slippage pump connect 3 mouthfuls of the oil inlet P of 1 mouthful of the oil inlet P of first one-way valve and second one-way valve together through the 5th one-way valve and accumulator, one termination fuel tank of repairing relief valve, another termination the 5th one-way valve oil outlet of repairing relief valve.
The beneficial effect that the present invention has is:
1) adopt variable speed volumetric speed control technology control shield cutter to drive the oil hydraulic motor rotating speed, different capacity demand when the size of adjusting motor variable speed device output signal control oil hydraulic pump output flow according to the shield driving operating mode is in real time tunneled different geological conditions under to adapt to, can not produce more than flow, can avoid energy loss to greatest extent;
2) adopt the bidirectional hydraulic pump as the hydraulic power energy, saved throttle element, system architecture is simple, the reliability height;
3) hydraulic lock that adopts Pilot operated check valve to form can realize the cutterhead bidirectional rapid braking, helps fault emergency treatment in the tunneling process;
4) adopt variable speed technology control oil hydraulic motor rotating speed, can realize the continuous precise speed governing;
5) be suitable for from the weak soil to the hard rock cutter plate driver under the various working conditions.
Description of drawings
Accompanying drawing is a rotating speed variable driving shield cutterhead energy-saving hydraulic control system structure principle chart of the present invention.
Among the figure: 1. variable speed motor, 2. coupling, 3. bidirectional hydraulic pump, 7,9,21,23,17 is one-way valve, 12. accumulators, 16. repairing relief valves, 18. slippage pump, 19. motors, 25,29 is Pilot operated check valve, 26. two-way hydraulic motor, 33. three position four-way directional control valves, 37, low pressure relief valve, 38, fuel tank, 39, high-pressure overflow valve, 27,28 is control oil channel, 4,5,6,8,10,11,13,14,15,20,22,24,30,31,32,34,35,36 is pipeline.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in drawings, the variable speed motor 1 in its major loop of the present invention links to each other with bidirectional hydraulic pump 3 through coupling 2; The filler opening of first one-way valve 7 and second one-way valve 9 is connected in series mutually, and the oil outlet of the 3rd one-way valve 21 and the 4th one-way valve 23 is connected in series mutually; The filler opening of one end of bidirectional hydraulic pump 3 and the oil outlet of first one-way valve 7, the 3rd one-way valve 21 and connect after, be connected in series first Pilot operated check valve 25 and link to each other with a hydraulic fluid port of oil hydraulic motor 26; The filler opening of the oil outlet of the other end of bidirectional hydraulic pump 3 and second one-way valve 7, the 4th one-way valve 21 and connect after, be connected in series second Pilot operated check valve 29 and link to each other with another hydraulic fluid port of oil hydraulic motor 26; After the filler opening of the filler opening of high-pressure overflow valve 39 and low pressure relief valve 37 passes through three position four-way directional control valve 33A mouth and B mouth respectively, be connected with the oil outlet P8 mouth of the 3rd one-way valve 21, the oil outlet P6 mouth of the 4th one-way valve 21, the oil outlet of the oil outlet of high-pressure overflow valve 39 and low pressure relief valve 37 is connected with fuel tank; 3 mouthfuls of the oil inlet P of 1 mouthful of the oil inlet P of first one-way valve 7 and second one-way valve 9 link to each other with feed circuit.
Described feed circuit, its motor 19 links to each other with slippage pump 18, one termination fuel tank 38 of slippage pump 18, the other end of slippage pump 18 connect 3 mouthfuls of the oil inlet P of 1 mouthful of the oil inlet P of first one-way valve 7 and second one-way valve 9 together through the 5th one-way valve 17 and accumulator 12, one termination fuel tank 38 of repairing relief valve 16, another termination the 5th one-way valve 17 oil outlets of repairing relief valve 16.
Working principle of the present invention is as follows:
When the sense of rotation of regulating variable speed motor 1, when coupling 2 drive bidirectional hydraulic pumps 3 are rotated in the forward, oil hydraulic pump 3 is by oil outlet and repairing pipeline 10 oil suctions of pipeline 5 from oil hydraulic motor 26, bidirectional hydraulic pump 3 pumps into oil hydraulic motor high pressure hydraulic fluid port with the fluid that sucks through Pilot operated check valve 25 and pipeline 30 by pipeline 4, and drive motor is rotated in the forward.At this moment, the control oil channel 28 of Pilot operated check valve 29 links to each other with pipeline 4, Pilot operated check valve 29 reverse-conductings under the high pressure oil effect.By regulating the rotating speed of variable speed motor 1, the oil suction of bidirectional hydraulic pump 3 and oil extraction flow also change thereupon, thereby the rotating speed of regulator solution pressure motor 26 and cutterhead adapts itself and load behavior.When three position four-way directional control valve 33 left side electromagnet are switched on, the P mouth of three position four-way directional control valve 33 and A mouth are connected, high pressure oil part in the pipeline 4 20 enters the 3rd one-way valve 21 hydraulic fluid port P7 by the road, flow out through pipeline 22,32 and three position four-way directional control valve 33 from the 3rd one-way valve 21 hydraulic fluid port P8 again and flow to high-pressure overflow valve 39 filler openings, when reaching default pressure, high-pressure overflow valve 39 is opened, pressure oil in the pipeline 4 flows back to fuel tank through relief valve 39, relief valve 39 plays the pressure limiting effect, and this moment, the cutterhead system can be operated in the high pulling torque operating mode.When three position four-way directional control valve 33 the right electromagnet are switched on, the P mouth of three position four-way directional control valve 33 and B mouth are connected, high pressure oil part in the pipeline 4 20 enters the 3rd one-way valve 21 hydraulic fluid port P7 by the road, flow out through pipeline 22,32 and three position four-way directional control valve 33 from the 3rd one-way valve 21 hydraulic fluid port P8 again and flow to low pressure relief valve 37 filler openings, when reaching default pressure, low pressure relief valve 37 is opened, pressure oil in the pipeline 4 flows back to fuel tank through relief valve 37, relief valve 37 plays the pressure limiting effect, and this moment, the cutterhead system can be operated in little moment of torsion operating mode.
When the sense of rotation of regulating variable speed motor 1, when making it drive 3 counterrotatings of bidirectional hydraulic pump, bidirectional hydraulic pump 3 is by oil outlet and repairing pipeline 6 oil suctions of pipeline 4 from oil hydraulic motor 26, pump 3 pumps into oil hydraulic motor high pressure hydraulic fluid port, drive motor counterrotating with the fluid that sucks through Pilot operated check valve 29 and pipeline 31 by pipeline 5.At this moment, the control oil channel 27 of Pilot operated check valve 25 links to each other with pipeline 5, Pilot operated check valve 25 reverse-conductings under the high pressure oil effect.By regulating the rotating speed of variable speed motor 1, the oil suction of bidirectional hydraulic pump 3 and oil extraction flow also change thereupon, thereby the rotating speed of regulator solution pressure motor 26 and cutterhead adapts itself and load behavior.When three position four-way directional control valve 33 left side electromagnet are switched on, the P mouth of three position four-way directional control valve 33 and A mouth are connected, high pressure oil part in the pipeline 5 24 enters the 4th one-way valve 23 hydraulic fluid port P5 by the road, flow out through pipeline 22,32 and three position four-way directional control valve 33 from the 4th one-way valve 23 hydraulic fluid port P6 again and flow to high-pressure overflow valve 39 filler openings, when reaching default pressure, high-pressure overflow valve 39 is opened, pressure oil in the pipeline 5 flows back to fuel tank through relief valve 39, relief valve 39 plays the pressure limiting effect, and this moment, the cutterhead system can be operated in the high pulling torque operating mode.When three position four-way directional control valve 33 the right electromagnet are switched on, the P mouth of three position four-way directional control valve 33 and B mouth are connected, high pressure oil part in the pipeline 5 24 enters the 4th one-way valve 23 hydraulic fluid port P5 by the road, flow out through pipeline 22,32 and three position four-way directional control valve 33 from the 4th one-way valve 23 hydraulic fluid port P6 again and flow to low pressure relief valve 37 filler openings, when reaching default pressure, low pressure relief valve 37 is opened, pressure oil in the pipeline 5 flows back to fuel tank through relief valve 37, relief valve 37 plays the pressure limiting effect, and this moment, the cutterhead system can be operated in little moment of torsion operating mode.
When three position four-way directional control valve 33 electromagnet cut off the power supply, system unloaded, oil hydraulic motor fast and stable braking under the acting in conjunction of Pilot operated check valve 25,29.
Exist when considering hydraulic work system and leak, so native system is provided with corresponding feed circuit.The hydraulic oil of slippage pump 18 outputs flows to pipeline 14,15 through one-way valve 17, accumulator 12 is connected with pipeline 14 by pipeline 13, one-way valve 7 hydraulic fluid port P2 are connected with pipeline 4 by pipeline 6, one-way valve 9 hydraulic fluid port P4 are connected with pipeline 5 by pipeline 10, one-way valve 7,9 hydraulic fluid port P1, P3 are connected with pipeline 14 by pipeline 8,11, when the needs repairing, pressure oil in the pipeline 14 by the road 11,8 and one-way valve enter the oil hydraulic pump oil sucting cavity, simultaneously, pressure oil in the pipeline 15 flows to repairing relief valve 16 filler openings, and oil compensation pressure is set up by repairing relief valve 16.Because the existence of one-way valve 7,9, system can realize two-way repairing.Accumulator 12 plays the pressurize effect.
Claims (2)
1, a kind of rotating speed variable driving shield cutterhead energy-saving hydraulic control system is characterized in that: the variable speed motor (1) in its major loop links to each other with bidirectional hydraulic pump (3) through coupling (2); First one-way valve (7) is connected in series mutually with the filler opening of second one-way valve (9), and the 3rd one-way valve (21) is connected in series mutually with the oil outlet of the 4th one-way valve (23); The filler opening of the oil outlet of one end of bidirectional hydraulic pump (3) and first one-way valve (7), the 3rd one-way valve (21) and connect after, be connected in series first Pilot operated check valve (25) and link to each other with a hydraulic fluid port of oil hydraulic motor (26); The filler opening of the oil outlet of the other end of bidirectional hydraulic pump (3) and second one-way valve (9), the 4th one-way valve (23) and connect after, be connected in series second Pilot operated check valve (29) and link to each other with another hydraulic fluid port of oil hydraulic motor (26); After the filler opening of the filler opening of high-pressure overflow valve (39) and low pressure relief valve (37) passes through three position four-way directional control valve (33) A mouth and B mouth respectively, be connected with the oil outlet P8 mouth of the 3rd one-way valve (21), the oil outlet P6 mouth of the 4th one-way valve (23), the oil outlet of high-pressure overflow valve (39) is connected with fuel tank with the oil outlet of low pressure relief valve (37); 3 mouthfuls of the oil inlet P of 1 mouthful of the oil inlet P of first one-way valve (7) and second one-way valve (9) link to each other with feed circuit.
2, a kind of rotating speed variable driving shield cutterhead energy-saving hydraulic control system according to claim 1, it is characterized in that: described feed circuit, its motor (19) links to each other with slippage pump (18), one termination fuel tank (38) of slippage pump (18), the other end of slippage pump (18) connects 3 mouthfuls of the oil inlet P of 1 mouthful of the oil inlet P of first one-way valve (7) and second one-way valve (9) together through the 5th one-way valve (17) and accumulator (12), one termination fuel tank (38) of repairing relief valve (16), another termination the 5th one-way valve (17) oil outlet of repairing relief valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100590785A CN100520087C (en) | 2008-01-09 | 2008-01-09 | Rotating speed variable driving shield cutterhead energy-saving hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100590785A CN100520087C (en) | 2008-01-09 | 2008-01-09 | Rotating speed variable driving shield cutterhead energy-saving hydraulic control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101216052A CN101216052A (en) | 2008-07-09 |
| CN100520087C true CN100520087C (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008100590785A Expired - Fee Related CN100520087C (en) | 2008-01-09 | 2008-01-09 | Rotating speed variable driving shield cutterhead energy-saving hydraulic control system |
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2008
- 2008-01-09 CN CNB2008100590785A patent/CN100520087C/en not_active Expired - Fee Related
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| CN101216052A (en) | 2008-07-09 |
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