CN203939787U - A kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load - Google Patents
A kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load Download PDFInfo
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- CN203939787U CN203939787U CN201420295699.4U CN201420295699U CN203939787U CN 203939787 U CN203939787 U CN 203939787U CN 201420295699 U CN201420295699 U CN 201420295699U CN 203939787 U CN203939787 U CN 203939787U
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Abstract
The utility model discloses a kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load.Comprise high low pressure oil sources, high low pressure oil circuit control and the import and export oil circuit that comprises four propelling hydraulic cylinders in parallel.One end of high low pressure oil circuit control is connected with high and low pressure oil sources separately respectively, and the other end of the high low pressure oil circuit control respectively rod chamber of the propelling hydraulic cylinder in parallel with four is connected with rodless cavity.Low pressure oil way is controlled TBM Laboratory Furniture and is advanced fast and Rapid reset process; High-pressure oil passage is controlled TBM Laboratory Furniture high pressure and is advanced and back off procedure.Normal propelling under operating mode, each propelling hydraulic cylinder can be realized the switching that proportional pressure-relief valve control pattern and ratio one-way throttle valve add proportional pressure control valve control mode; At ratio one-way throttle valve, add under proportional pressure control valve control mode, in conjunction with the accumulator that is connected to propelling hydraulic cylinder rodless cavity, can comply with the sudden change load running in drive-in step, thereby cushion the compression shock of moment, extend the working life of system hydraulic element.
Description
Technical field
The utility model relates to propulsion hydraulic system, relates in particular to a kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load.
Background technique
Hard rock tunnel development machine (Tunnel Boring Machine, be called for short TBM), is a kind of high-intelligentization, collects the great engineering equipment of tunnel construction of mechanical, electrical, liquid, light, computer etc.In developed country, use rock tunnel(ling) machine construction to account for the more than 90% of tunnel total amount.Along with the fast development of China's national economy, domestic city process is constantly accelerated, and Chinese city subway tunnel, Hydraulic Tunnel, cross-river tunnel and railway tunnel etc. are by a large amount of rock tunnel(ling) machine of needs.
TBM propulsion system mainly possesses when the broken rock of cutterhead provides high pressure thrust, and recession power is provided when cutterhead retreats, when zero load, realize that driving cylinder stretches out fast and the process of changing step in realize the driving cylinder function such as recovery fast.Propulsion system is as the key components of TBM, most important task is just being carried from the next extraneous load high pressure propelling of cutterhead transmission, due to country rock environmental uncertainty, when there is large unbalance loading or sudden change load, just need to go to comply with extraneous sudden change load by the hydraulic overflow element in propulsion hydraulic system, working medium compression, hydraulic tubing distortion etc.
Actual TBM propulsion hydraulic system is generally by reduction valve control mode, to control four propelling hydraulic cylinders, and four cylinder interlocks keep synchronism; Such propulsion hydraulic system is when running into large unbalance loading or sudden change load, can not instantaneous a large amount of overflow, do not have hydraulic element to cushion the fluctuation that sudden change load causes yet, so its ability of complying with sudden change load is by poor, the propulsion system extraneous sudden change load that can not digest well and decay, cause system damage, the hydraulic element life-span reduces.
Summary of the invention
In order to overcome the problem that can not finely comply with sudden change load and large unbalance loading in existing TBM propulsion hydraulic system, meet the requirement of hard rock tunneling construction simultaneously, the purpose of this utility model has been to provide a kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load, normal, advance under operating mode, each propelling hydraulic cylinder can be realized the switching that proportional pressure-relief valve control pattern and ratio one-way throttle valve add proportional pressure control valve control mode; At ratio one-way throttle valve, add under proportional pressure control valve control mode, realized the compound control of propelling pressure flow, in conjunction with the accumulator that is connected to propelling hydraulic cylinder rodless cavity, can comply with sudden change load and the large unbalance loading running in drive-in step, thereby cushion the compression shock of moment, extend the working life of system hydraulic element.
The utility model solves the technological scheme that its technical problem adopts:
The utility model comprises high and low pressure oil sources, high and low pressure oil circuit control and propelling hydraulic cylinder inlet/outlet oil circuit; Wherein:
High voltage control oil circuit, comprising: two-bit triplet selector valve, proportional pressure-reducing valve, ratio one-way throttle valve, proportional pressure control valve, the first one-way valve, the second one-way valve and first three position four-way directional control valve, the A3 mouth of two-bit triplet selector valve is divided into two-way after ratio one-way throttle valve, the P1 mouth of one tunnel the first one-way valve and the first three position four-way directional control valve is connected, another road is through proportional pressure control valve connected tank, the B3 mouth of two-bit triplet selector valve connects the P1 mouth of first three position four-way directional control valve after proportional pressure-reducing valve and the second one-way valve, the T1 mouth of first three position four-way directional control valve, A1 mouth and B1 mouth be connected tank respectively, the rod chamber of the rodless cavity of four propelling hydraulic cylinders in parallel and four propelling hydraulic cylinders in parallel, the B1 mouth of first three position four-way directional control valve is through safety valve connected tank, the P3 mouth of two-bit triplet selector valve connects high pressure fuel source.
Low voltage control oil circuit, comprising: throttle valve and second three position four-way directional control valve; The P2 mouth of second three position four-way directional control valve connects low pressure oil sources fuel tank through throttle valve, the T2 mouth of second three position four-way directional control valve, A2 mouth and B2 mouth are connected respectively fuel tank, the rod chamber of the rodless cavity of four propelling hydraulic cylinders in parallel and four propelling hydraulic cylinders in parallel.
Propelling hydraulic cylinder is imported and exported oil circuit, comprising: four propelling hydraulic cylinders in parallel, accumulator, high-pressure stop valve, safety valve and pressure gauges; The rod chamber of four propelling hydraulic cylinders also connects through safety valve connected tank, the rodless cavity of four propelling hydraulic cylinders in parallel is equipped with pressure gauge and accumulator, one, one tunnel of accumulator high-pressure stop valve is connected to the rodless cavity of propelling hydraulic cylinder, and accumulator is separately leaded up to another high-pressure stop valve connected tank.
Described high pressure fuel source, comprising: fuel tank, the first motor, the first elastic coupling flexible coupling, high pressure variable displacement pump, the first filter and high-pressure safety valve; The filler opening connected tank of high pressure variable displacement pump, the oil outlet of high pressure variable displacement pump is divided into two clams after the first filter, one tunnel connects the P3 mouth of two-bit triplet selector valve, and another road is through high-pressure safety valve connected tank, and high pressure variable displacement pump is connected with the first motor through the first elastic coupling flexible coupling.
Described low pressure oil sources, comprising: fuel tank, the second motor, the second elastic coupling flexible coupling, low pressure variable displacement pump, the second filter and low-pressure safety valve; The filler opening connected tank of low pressure variable displacement pump, the oil outlet of low pressure variable displacement pump is divided into two-way after the second filter, and a road connects throttle valve, and another road is through low-pressure safety valve connected tank, and low pressure variable displacement pump is connected with the second motor through the second elastic coupling flexible coupling.
The utility model is compared with background technique, and the beneficial effect having is:
1) normal, advance under operating mode, each propelling hydraulic cylinder can be realized the switching that proportional pressure-relief valve control pattern and ratio one-way throttle valve add proportional pressure control valve control mode.
2) at ratio one-way throttle valve, add under proportional pressure control valve control mode, realized the compound control of propelling pressure flow, in conjunction with the accumulator that is connected to propelling hydraulic cylinder rodless cavity, can also comply with sudden change load or the large unbalance loading running in drive-in step, thereby cushion the compression shock of moment, extend the working life of system hydraulic element.
Accompanying drawing explanation
Fig. 1 is the TBM Laboratory Furniture propulsion hydraulic system structural representation of complying with sudden change load.
In figure: 1, low-pressure safety valve, 2, two motor, 3, two elastic coupling flexible couplings, 4, low pressure variable displacement pump, 5, two filters, 6, high pressure variable displacement pump, 7, high-pressure safety valve, 8, two-bit triplet selector valve, 9, ratio one-way throttle valve, 10, proportional pressure control valve, 11, proportional pressure-reducing valve, 12, two one-way valves, 13, two three position four-way directional control valves, 14, four propelling hydraulic cylinders in parallel, 15, accumulator, 16, high-pressure stop valve, 17, pressure gauge, 18, safety valve, 19, throttle valve, 20, fuel tank.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the utility model is further illustrated.
As shown in Figure 1, the utility model comprises high and low pressure oil sources, high and low pressure oil circuit control and propelling hydraulic cylinder inlet/outlet oil circuit; Wherein:
High voltage control oil circuit, comprising: two-bit triplet selector valve 8, proportional pressure-reducing valve 11, ratio one-way throttle valve 9, proportional pressure control valve 10, the first one-way valve 12, the second one-way valve 12 and first three position four-way directional control valve 13, the A3 mouth of two-bit triplet selector valve 8 is divided into two-way after ratio one-way throttle valve 9, the P1 mouth of one tunnel the first one-way valve 12 and first three position four-way directional control valve 13 is connected, another road is through proportional pressure control valve 10 connected tanks 20, the B3 mouth of two-bit triplet selector valve 8 connects the P1 mouth of first three position four-way directional control valve 13 after proportional pressure-reducing valve 11 and the second one-way valve 12, the T1 mouth of first three position four-way directional control valve 13, A1 mouth and B1 mouth be connected tank 20 respectively, the rod chamber of the rodless cavity of four propelling hydraulic cylinders in parallel 14 and four propelling hydraulic cylinders in parallel 14, the B1 mouth of first three position four-way directional control valve 13 is through safety valve 18 connected tanks 20, the P3 mouth of two-bit triplet selector valve 8 connects high pressure fuel source.
Low voltage control oil circuit, comprising: throttle valve 19 and second three position four-way directional control valve 13; The P2 mouth of second three position four-way directional control valve 13 connects low pressure oil sources through throttle valve 19, the T2 mouth of second three position four-way directional control valve 13, A2 mouth and B2 mouth are connected respectively fuel tank, the rod chamber of the rodless cavity of four propelling hydraulic cylinders in parallel 14 and four propelling hydraulic cylinders in parallel 14.
Propelling hydraulic cylinder is imported and exported oil circuit, comprising: four propelling hydraulic cylinders in parallel 14, accumulator 15, high-pressure stop valve 16, safety valve 18 and pressure gauges 17; The rod chamber of four propelling hydraulic cylinders 14 also connects through safety valve 18 connected tanks 20, the rodless cavity of four propelling hydraulic cylinders in parallel 14 is equipped with pressure gauge 17 and accumulator 1, one, 1 one tunnel of accumulator high-pressure stop valve 16 is connected to the rodless cavity of propelling hydraulic cylinder 14, and accumulator 1 is separately leaded up to another high-pressure stop valve 16 connected tanks 20.
Described high pressure fuel source comprises: fuel tank 20, the first motor 2, the first elastic coupling flexible coupling 3, high pressure variable displacement pump 6, the first filter 5 and high-pressure safety valve 7; The filler opening connected tank 20 of high pressure variable displacement pump 6, the oil outlet of high pressure variable displacement pump 6 is divided into two clams after the first filter 5, one tunnel connects the P3 mouth of two-bit triplet selector valve 8, and another road is through high-pressure safety valve 7 connected tanks 20, and high pressure variable displacement pump 6 is connected with the first motor 2 through the first elastic coupling flexible coupling 3.
Described low pressure oil sources comprises: fuel tank 20, the second motor 2, the second elastic coupling flexible coupling 3, low pressure variable displacement pump 4, the second filter 5 and low-pressure safety valve 1; The filler opening connected tank 20 of low pressure variable displacement pump 4, the oil outlet of low pressure variable displacement pump 4 is divided into two-way after the second filter 5, one tunnel connects throttle valve 19, and another road connects low pressure oil sources through low-pressure safety valve 7, and low pressure variable displacement pump 4 is connected with the second motor 2 through the second elastic coupling flexible coupling 3.
Working principle of the present utility model is as follows:
The second motor 2 being connected with low pressure variable displacement pump 4 obtains electric; by the second elastic coupling flexible coupling 3, moment of torsion is passed to low pressure variable displacement pump 4; low pressure variable displacement pump 4 rotates; by its inlet port from fuel tank 20 oil suctions; the pressure oil of getting enters respectively low voltage control oil circuit after the second filter 5; low-pressure safety valve 1 can overflow back fuel tank 20 when system pressure is too high, protection low pressure variable displacement pump 4.When the three position four-way directional control valve 13 left side electromagnet of low voltage control oil circuit obtain when electric, its left position connecting system, pressure oil enters the rodless cavity of propelling hydraulic cylinder 14 after by throttle valve 19, promotion oil hydraulic cylinder advances, now the oil in rod chamber can be back to fuel tank 20, by regulating the valve port size of throttle valve 19 just can realize the quick propelling of TBM when the zero load; When the three position four-way directional control valve 13 right side electromagnet of low voltage control oil circuit obtain when electric, its right position connecting system, pressure oil enters the rod chamber of propelling hydraulic cylinder 14 after by throttle valve 19, promotion oil hydraulic cylinder retreats, now the oil in rodless cavity can be back to fuel tank 20, by regulating the valve port size of throttle valve 19 just can realize the driving cylinder Rapid reset of TBM when support is changed step.
The second motor 2 being connected with high pressure variable displacement pump 6 obtains electric; by the second elastic coupling flexible coupling 3, moment of torsion is passed to high pressure variable displacement pump 6; high pressure variable displacement pump 6 rotates; by its inlet port from fuel tank 20 oil suctions; the pressure oil of getting enters respectively high voltage control oil circuit after the second filter 5; high-pressure safety valve 7 can overflow back fuel tank 20 when system pressure is too high, protection high pressure variable displacement pump 6.Electromagnet dead electricity when two-bit triplet selector valve 8, the three position four-way directional control valve left side electromagnet of high voltage control oil circuit obtains when electric, the P3 mouth of two-bit triplet selector valve 8 and A3 mouth are communicated with, the left position connecting system of three position four-way directional control valve 13, after pressure oil passing ratio one-way throttle valve 9, one tunnel enters the filler opening of proportional pressure control valve 10, separately lead up to and enter the rodless cavity of propelling hydraulic cylinder 14 after the first one-way valve 12, now select ratio one-way throttle valve to add proportional pressure control valve control mode and controlled propelling hydraulic cylinder, by regulating proportional pressure control valve 10 and ratio one-way throttle valve 9, can realize the compound control of the pressure flow of propelling hydraulic cylinder, realized the high pressure promotion process of TBM, especially, when cutterhead runs into large unbalance loading or sudden change load, can passing ratio relief valve 10 and instantaneous a large amount of overflows of high-pressure safety valve 7, in conjunction with the accumulator that is connected to propelling hydraulic cylinder 14 rodless cavities, thereby can effectively cushion, digest and attenuate the extraneous load of part, reduce the damage of even avoiding large unbalance loading or sudden change load to cause to system, realized TBM and complied with sudden change load.When the electromagnet of two-bit triplet selector valve 8 and the three position four-way directional control valve of high voltage control oil circuit 13 left side electromagnet simultaneously when electric, the P3 mouth of two-bit triplet selector valve 8 and B3 mouth are communicated with, the left position connecting system of three position four-way directional control valve 13, pressure oil enters the rodless cavity of propelling hydraulic cylinder successively after passing ratio reduction valve 11 and the second one-way valve 12, now selected proportional pressure-relief valve control pattern to control propelling hydraulic cylinder, by regulating proportional pressure-reducing valve 11, can control driving cylinder pressure flow (this is the conventional control mode of existing TBM propelling hydraulic cylinder), realize the existing TBM high pressure of simulation and advanced operating mode, when the three position four-way directional control valve 13 right side electromagnet of high voltage control oil circuit obtain when electric, 13 right connecting systems of three position four-way directional control valve, pressure oil enters the rod chamber of propelling hydraulic cylinder, now can be whether electric regardless of obtaining of two-bit triplet selector valve 8, because this is will realize when TBM stretching country rock, by cutterhead rollback, this operating mode designs for this TBM Laboratory Furniture armlet cover limited length, do not need pressure oil to control, as long as there is pressure oil to enter propelling hydraulic cylinder rodless cavity, can promote hydraulic cylinder rod rollback, for preventing that now rod chamber pressure is excessive, and safety valve 18 protective systems have been connect.
Claims (3)
1. a TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load, is characterized in that: comprise high and low pressure oil sources, high and low pressure oil circuit control and propelling hydraulic cylinder inlet/outlet oil circuit; Wherein:
High voltage control oil circuit, comprising: two-bit triplet selector valve (8), proportional pressure-reducing valve (11), ratio one-way throttle valve (9), proportional pressure control valve (10), the first one-way valve, the second one-way valve and first three position four-way directional control valve, the A3 mouth of two-bit triplet selector valve (8) is divided into two-way after ratio one-way throttle valve (9), the P1 mouth of one tunnel the first one-way valve and first three position four-way directional control valve is connected, another road is through proportional pressure control valve (10) connected tank, the B3 mouth of two-bit triplet selector valve (8) connects the P1 mouth of first three position four-way directional control valve after proportional pressure-reducing valve (11) and the second one-way valve, the T1 mouth of first three position four-way directional control valve, A1 mouth and B1 mouth be connected tank respectively, the rod chamber of the rodless cavity of four propelling hydraulic cylinders in parallel (14) and four propelling hydraulic cylinders in parallel (14), the B1 mouth of first three position four-way directional control valve is through safety valve (18) connected tank, the P3 mouth of two-bit triplet selector valve (8) connects high pressure fuel source,
Low voltage control oil circuit, comprising: throttle valve (19) and second three position four-way directional control valve; The P2 mouth of second three position four-way directional control valve connects low pressure oil sources through throttle valve (19), the T2 mouth of second three position four-way directional control valve, A2 mouth and B2 mouth are connected respectively fuel tank, the rod chamber of the rodless cavity of four propelling hydraulic cylinders in parallel (14) and four propelling hydraulic cylinders in parallel (14);
Propelling hydraulic cylinder inlet/outlet oil circuit, comprising: four propelling hydraulic cylinders in parallel (14), accumulator (15), high-pressure stop valve (16), safety valve (18) and pressure gauge (17); The rod chamber of four propelling hydraulic cylinders (14) also connects through safety valve (18) connected tank, the rodless cavity of four propelling hydraulic cylinders in parallel (14) is equipped with pressure gauge (17) and accumulator (1), one, (1) one tunnel of accumulator high-pressure stop valve is connected to the rodless cavity of propelling hydraulic cylinder (14), and accumulator (1) is separately leaded up to another high-pressure stop valve connected tank.
According to claim 1 a kind of comply with sudden change load TBM Laboratory Furniture propulsion hydraulic system, it is characterized in that: described high pressure fuel source, comprising: fuel tank, the first motor, the first elastic coupling flexible coupling, high pressure variable displacement pump (6), the first filter and high-pressure safety valve (7); The filler opening connected tank of high pressure variable displacement pump (6), the oil outlet of high pressure variable displacement pump (6) is divided into two-way after the first filter, one tunnel connects the P3 mouth of two-bit triplet selector valve (8), another road is through high-pressure safety valve (7) connected tank, and high pressure variable displacement pump (6) is connected with the first motor (2) through the first elastic coupling flexible coupling.
According to claim 1 a kind of comply with sudden change load TBM Laboratory Furniture propulsion hydraulic system, it is characterized in that: described low pressure oil sources, comprising: fuel tank, the second motor, the second elastic coupling flexible coupling, low pressure variable displacement pump (4), the second filter and low-pressure safety valve (1); The filler opening connected tank of low pressure variable displacement pump (4), the oil outlet of low pressure variable displacement pump (4) is divided into two-way after the second filter, one tunnel connects throttle valve (19), and another road is through low-pressure safety valve (7) connected tank, and low pressure variable displacement pump (4) is connected with the second motor through the second elastic coupling flexible coupling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420295699.4U CN203939787U (en) | 2014-06-05 | 2014-06-05 | A kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420295699.4U CN203939787U (en) | 2014-06-05 | 2014-06-05 | A kind of TBM Laboratory Furniture propulsion hydraulic system of complying with sudden change load |
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| CN203939787U true CN203939787U (en) | 2014-11-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033430A (en) * | 2014-06-05 | 2014-09-10 | 浙江大学 | TBM experiment table thrust hydraulic system capable of conforming sudden-change load |
| CN105971953A (en) * | 2016-06-27 | 2016-09-28 | 中国农业大学 | Sprayer spraying rod ground profiling hydraulic system with dynamic pressure feedback devices |
| CN106351896A (en) * | 2016-10-09 | 2017-01-25 | 广东技术师范学院 | Universal hydraulic system |
| CN107013518A (en) * | 2016-01-27 | 2017-08-04 | 鞍钢股份有限公司 | A kind of polishing machine hydraulic pressure pressure upper controller and method |
| CN109477445A (en) * | 2016-07-25 | 2019-03-15 | 罗伯特·博世有限公司 | Method for the fuel delivery means of internal combustion engine and for conveying fuel in fuel delivery means |
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2014
- 2014-06-05 CN CN201420295699.4U patent/CN203939787U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033430A (en) * | 2014-06-05 | 2014-09-10 | 浙江大学 | TBM experiment table thrust hydraulic system capable of conforming sudden-change load |
| CN107013518A (en) * | 2016-01-27 | 2017-08-04 | 鞍钢股份有限公司 | A kind of polishing machine hydraulic pressure pressure upper controller and method |
| CN105971953A (en) * | 2016-06-27 | 2016-09-28 | 中国农业大学 | Sprayer spraying rod ground profiling hydraulic system with dynamic pressure feedback devices |
| CN105971953B (en) * | 2016-06-27 | 2017-11-14 | 中国农业大学 | A kind of spraying machine spray lance ground shape imitation hydraulic system with dynamic pressure feedback device |
| CN109477445A (en) * | 2016-07-25 | 2019-03-15 | 罗伯特·博世有限公司 | Method for the fuel delivery means of internal combustion engine and for conveying fuel in fuel delivery means |
| CN109477445B (en) * | 2016-07-25 | 2021-05-28 | 罗伯特·博世有限公司 | Fuel delivery device and method for delivering fuel in a fuel delivery device |
| CN106351896A (en) * | 2016-10-09 | 2017-01-25 | 广东技术师范学院 | Universal hydraulic system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20170605 |