CN101424283A - Hydraulic power source system for ultra-high pressure tool - Google Patents
Hydraulic power source system for ultra-high pressure tool Download PDFInfo
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- CN101424283A CN101424283A CNA2008102398249A CN200810239824A CN101424283A CN 101424283 A CN101424283 A CN 101424283A CN A2008102398249 A CNA2008102398249 A CN A2008102398249A CN 200810239824 A CN200810239824 A CN 200810239824A CN 101424283 A CN101424283 A CN 101424283A
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Abstract
The invention belongs to the field of hydraulic equipment, in particular to a hydraulic power source system of an hyperpressure tool. The hydraulic power source system has the following structure: an oil inlet of an oil pump is communicated with an oil tank; an oil outlet of the oil pump is communicated with an oil inlet of a reversing valve; the oil outlet of the oil pump is also communicated with the oil tank through an overflow valve; a right outlet of the reversing valve is communicated with a rod cavity of a working cylinder; the right outlet of the reversing valve is also communicated with a rod cavity of a supercharging cylinder through a hydraulic one-way valve; a left outlet of the reversing valve is communicated with a rodless cavity of the supercharging cylinder; the rodless cavity of the supercharging cylinder is communicated with a rodless cavity of the working cylinder through the one-way valve, a central pore canal and a supercharging cavity; and the end part of a piston of the working cylinder is provided with a cutting tool. The hydraulic power source system can conveniently realize low-pressure speeding of a power element of the equipment, effectively improves working efficiency, has the advantages of low cost, stable operation, high service life, high working efficiency, convenient maintenance, strong capacity for resisting temperature change and environmental pollution and the like, and is suitable for long-term outdoor use in a building construction field.
Description
Technical field
The invention belongs to the hydraulic equipment field, particularly a kind of is the hydraulic power source system of ultra-high pressure tool.
Background technique
Cut off, push at the steel that use at present in the hydraulic pressure installation of ultra-high pressure tools such as connection and expander, adopt superpressure oil pump usually as hydraulic power supply.
Superpressure oil pump is to convert the mechanical energy that motor (or other prime mover) is exported to liquid ultrahigh pressure pressure energy (80～100MPa) reforming unit.Superpressure oil pump has advantages such as volume is little, in light weight, delivery pressure is big, is fit to be used as the hydraulic power supply of ultra-high pressure tool.But, in actual use, find that also there are some problems in superpressure oil pump:
1) superpressure oil pump because the oil temperature is too high, can causes oil viscosity decline and cause internal leakage to strengthen that this has influence on the volumetric efficiency of pump to a great extent under ultra-high pressure condition, and excessive internal leakage also can make oil pump failure.
What 2) adopt between the kinematic pair such as the plunger of superpressure oil pump and plunger case is clearance seal, its gap is little, machining accuracy is high, clearance seal is to the requirement height of the turbidity test and the temperature of fluid, so this oil pump contamination resistance is relatively poor, Environmental Conditions is required harshness, be unsuitable for for a long time building site use in the open.
3) because the super high pressure oil POF is less, when Hydraulic power tools needed " low pressure F.F. " and " high pressure the worker advance " two kinds of operating modes to switch, the output flow of this oil pump had limited " F.F. " speed, caused the equipment utilization efficiency to reduce.
Summary of the invention
The objective of the invention is to overcome the defective that existing superpressure oil pump internal leakage is big, stain resistance is poor, utilization efficiency is low, invent a kind of by the hydraulic pressure routine pressure (＜31.5MPa) hydraulic power supply of the ultra-high pressure tool formed of element.
Above-mentioned purpose realizes that by a kind of hydraulic power supply of such ultra-high pressure tool it comprises oil pump, relief valve, selector valve, Pilot operated check valve, pressurized cylinder, push rod, one-way valve, clutch release slave cylinder and fuel reserve tank;
Be provided with pressurized cylinder piston in the pressurized cylinder, pressurized cylinder piston is divided into rodless cavity, rod chamber and booster cavity with pressurized cylinder;
Be provided with slave cylinder piston in the clutch release slave cylinder, slave cylinder piston is divided into rodless cavity and rod chamber with clutch release slave cylinder;
Push rod is located at the end cap central authorities of pressurized cylinder rodless cavity;
Pressurized cylinder piston is the parts of a hollow, in hollow, be provided with one-way valve and central duct, the entry end of one-way valve be positioned at push rod over against the position, when piston is all return, push rod can touch one-way valve and make its conducting, and the outlet end of one-way valve is communicated with booster cavity by central duct;
The filler opening of oil pump is communicated with fuel tank, the oil outlet of oil pump is communicated with the filler opening of selector valve, the oil outlet of oil pump also is communicated with fuel tank by relief valve, and the right position outlet of selector valve is communicated with the clutch release slave cylinder rod chamber, and the right position outlet of selector valve also is communicated with the pressurized cylinder rod chamber by Pilot operated check valve; Position, the left side outlet of selector valve is communicated with the pressurized cylinder rodless cavity, the pressurized cylinder rodless cavity is communicated with the clutch release slave cylinder rodless cavity by one-way valve, central duct and booster cavity, the Pilot operated check valve control oil channel is communicated with position, the left side outlet of selector valve, the end of slave cylinder piston bar is provided with tool head, and for example shearing tool, squeeze head or expander are first-class.
Described oil pump is preferably the little displacement gear pump that rated pressure is not more than 25MPa.
The pressure ratio of described pressurized cylinder is P
2/ P
1=5, P wherein
2Be the pressure of booster cavity, P
1Pressure for the pressurized cylinder rodless cavity.
Good effect of the present invention is as follows: adopt the hydraulic power supply of ultra-high pressure tool of the present invention, need not to add in addition the ultrahigh pressure control unit, can conveniently form the ultra-high pressure tool hydraulic power supply.Utilize the bigger advantage of conventional pressure oil pump output flow also can realize " the low pressure F.F. " of equipment executive component easily, improved working efficiency effectively.Advantages such as it has that cost is low, working stability, life-span height, work efficiency height, easy to maintenance, and resisting temperature changes and the environmental pollution ability is strong are suitable for the long-term open-air use in construction building site.
Description of drawings
The directional terminology of Cai Yonging all is for the direction of the reading accompanying drawing of routine in the following description.
Fig. 1 is the structural representation of a preferred embodiment of the present invention
Among the figure:
1 oil pump, 2 relief valves, 3 selector valves
4 Pilot operated check valves, 5 pressurized cylinders, 6 push rods
7 one-way valves, 8 clutch release slave cylinders, 9 fuel reserve tanks
10 pressurized cylinder pistons, 11 pressurized cylinder rodless cavities, 12 pressurized cylinder rod chambers
13 slave cylinder pistons, 14 clutch release slave cylinder rodless cavities, 15 clutch release slave cylinder rod chambers
16 central duct, 17 booster cavities, 18 selector valve filler openings
The right position outlet of 19 selector valves 20 selector valves left side position outlet 21 shearing tools
Embodiment
As shown in Figure 1, the hydraulic power supply of described ultra-high pressure tool is made up of oil pump 1, relief valve 2, selector valve 3, Pilot operated check valve 4, pressurized cylinder 5, push rod 6, one-way valve 7, clutch release slave cylinder 8 and fuel reserve tank 9; Be provided with pressurized cylinder piston 10 in the pressurized cylinder 5, pressurized cylinder piston 10 is divided into pressurized cylinder rodless cavity 11 and pressurized cylinder rod chamber 12 with pressurized cylinder 5; Be provided with slave cylinder piston 13 in the clutch release slave cylinder 8, slave cylinder piston 13 is divided into clutch release slave cylinder rodless cavity 14 and clutch release slave cylinder rod chamber 15 with clutch release slave cylinder 15; Push rod 6 is located at the bottom center of pressurized cylinder rodless cavity 11; Pressurized cylinder piston 10 is parts of a hollow, in hollow, be provided with one-way valve 7, central duct 16 and booster cavity 17, the entry end of one-way valve 7 be positioned at push rod 6 over against the position, when this piston is all return, push rod 6 can touch one-way valve 7 and make its conducting, and the outlet end of one-way valve 7 is communicated with booster cavity 17 by central duct 16; The filler opening of oil pump 1 is communicated with fuel tank 9, the oil outlet of oil pump 1 is communicated with the filler opening 18 of selector valve 3, the oil outlet of oil pump 1 also is communicated with fuel tank 9 by relief valve 2, the right position outlet 19 of selector valve 3 is communicated with clutch release slave cylinder rod chamber 15, and the right position of selector valve 3 exports 19 and also passes through Pilot operated check valve 4 and be communicated with pressurized cylinder rod chamber 12; The left side position outlet 20 of selector valve 3 is communicated with pressurized cylinder rodless cavity 11, and pressurized cylinder rodless cavity 11 passes through one-way valve 7, central duct 16 and booster cavity 17 and is communicated with clutch release slave cylinder rodless cavity 14, and the end of slave cylinder piston 13 is provided with shearing tool 21.
Described oil pump 1 is not more than the little displacement gear pump of 25MPa for rated pressure.
The present invention adopts pressurized cylinder to form boost-up circuit, and the center is provided with one-way valve and central duct in pressurized cylinder piston, and pressurized cylinder rodless cavity end cap is provided with push rod.When pressurized cylinder piston was in the high order end position, push rod can back down one-way valve and make its conducting.
Working procedure of the present invention is as follows: when oil circuit was connected in position, a selector valve left side, fluid entered the pressurized cylinder rodless cavity, directly enters the clutch release slave cylinder rodless cavity through one-way valve 7, central duct 16 and booster cavity 17, and the cylinder piston that pushes the work forward stretches out clamping work pieces.At this moment, because the control of Pilot operated check valve 4, oil circuit is in low pressure, Pilot operated check valve oppositely ends, and the oil circuit of pressurized cylinder is cut off, and makes pressurized cylinder piston keep motionless, the output fluid of oil pump all enters clutch release slave cylinder through central duct, and slave cylinder piston is stretched out fast, realizes " low pressure F.F. "; After finishing " clamping " operating mode, because load resistance increases, oil pressure raises, Pilot operated check valve control oil channel pressure also increases, Pilot operated check valve is oppositely opened, pressurized cylinder rod chamber oil circuit is connected fuel tank, and pressurized cylinder piston moves right, and one-way valve is closed under the effect of booster cavity high pressure behind the push rod automatically allowing.Fluid in the booster cavity is pressurized, and the cylinder piston that pushes the work forward is descending with the continuation of low speed ultrahigh pressure, realizes " ultrahigh pressure the worker advance " operating mode automatically.The super high pressure oil flow quantity that the pressurized cylinder booster cavity is discharged at each stroke should be able to satisfy the required flow of clutch release slave cylinder " ultrahigh pressure the worker advance ".
After " worker advances " operating mode is finished, the selector valve commutation, oil circuit is inserted in right position, and the fluid of oil pump output can enter the clutch release slave cylinder rod chamber simultaneously and enter the pressurized cylinder rod chamber through Pilot operated check valve.This moment, pressurized cylinder piston was return fast, and slave cylinder piston is got back in the pressurized cylinder booster cavity the fluid in the clutch release slave cylinder rod chamber is defeated in fall back process, and it is full of, and recycles.
After all work is finished, selector valve can be placed meta.Utilize selector valve meta function to realize the off-load of oil pump low pressure, both can save power consumpiton, reduce the fluid heating again.
When produce leaking between pressurized cylinder booster cavity and the clutch release slave cylinder rodless cavity when making fluid not enough, might cause pressurized cylinder piston return error, promptly slave cylinder piston oneself return and put in place and pressurized cylinder piston does not also fall back on left end.At this moment, this device can allow oil pump fluid continue to pressurized cylinder rod chamber fuel feeding through Pilot operated check valve, makes it continue a left side and moves back, and until eliminating the return error, realizes the leakage compensation function.
When slave cylinder piston return error occurring, be that pressurized cylinder piston is return earlier and put in place and slave cylinder piston is not also return when putting in place, this moment is owing to the inner one-way valve of pressurized cylinder piston is backed down by push rod, the oil return of clutch release slave cylinder exocoel can continue oil return through central duct, one-way valve, selector valve, until its slave cylinder piston return put in place till.
This shows that move in circles through one, this device oil circuit can be eliminated the return error of pressurized cylinder and clutch release slave cylinder automatically, does not need to add in addition recharging oil device again.
Claims (9)
1. the hydraulic power source system of a ultra-high pressure tool comprises oil pump, relief valve, selector valve, Pilot operated check valve, pressurized cylinder, push rod, one-way valve, clutch release slave cylinder and fuel reserve tank;
It is characterized in that: be provided with pressurized cylinder piston in the pressurized cylinder, pressurized cylinder piston is divided into rodless cavity, rod chamber and booster cavity with pressurized cylinder;
Be provided with slave cylinder piston in the clutch release slave cylinder, slave cylinder piston is divided into clutch release slave cylinder rodless cavity and clutch release slave cylinder rod chamber with clutch release slave cylinder;
Push rod is located at the end cap central authorities of pressurized cylinder rodless cavity;
Pressurized cylinder piston is the parts of a hollow, in hollow, be provided with one-way valve, central duct and booster cavity, the entry end of one-way valve be positioned at push rod over against the position, when this piston is all return, push rod can touch one-way valve and make its conducting, and the outlet end of one-way valve is communicated with booster cavity by central duct;
The filler opening of oil pump is communicated with fuel tank, the oil outlet of oil pump is communicated with the filler opening of selector valve, the oil outlet of oil pump also is communicated with fuel tank by relief valve, and the right position outlet of selector valve is communicated with the clutch release slave cylinder rod chamber, and the right position outlet of selector valve also is communicated with the pressurized cylinder rod chamber by Pilot operated check valve; Position, the left side outlet of selector valve is communicated with the pressurized cylinder rodless cavity, and the pressurized cylinder rodless cavity is communicated with the clutch release slave cylinder rodless cavity by one-way valve, central duct and booster cavity, and the end of slave cylinder piston is provided with tool head.
2. the hydraulic power source system of ultra-high pressure tool according to claim 1, it is characterized in that: described oil pump is the little displacement gear pump that rated pressure is not more than 25MPa.
3. the hydraulic power source system of ultra-high pressure tool as claimed in claim 1 or 2, it is characterized in that: the pressure ratio of described pressurized cylinder is P
2/ P
1=5.
4. the hydraulic power source system of ultra-high pressure tool as claimed in claim 1 or 2, it is characterized in that: described tool head is a shearing tool.
5. the hydraulic power source system of ultra-high pressure tool as claimed in claim 3, it is characterized in that: described tool head is a shearing tool.
6. the hydraulic power source system of ultra-high pressure tool as claimed in claim 1 or 2, it is characterized in that: described tool head is a squeeze head.
7. the hydraulic power source system of ultra-high pressure tool as claimed in claim 3, it is characterized in that: described tool head is a squeeze head.
8. the hydraulic power source system of ultra-high pressure tool as claimed in claim 1 or 2, it is characterized in that: described tool head is the expander head.
9. the hydraulic power source system of ultra-high pressure tool as claimed in claim 3, it is characterized in that: described tool head is the expander head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102398249A CN101424283A (en) | 2008-12-12 | 2008-12-12 | Hydraulic power source system for ultra-high pressure tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102398249A CN101424283A (en) | 2008-12-12 | 2008-12-12 | Hydraulic power source system for ultra-high pressure tool |
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| CN101424283A true CN101424283A (en) | 2009-05-06 |
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| CNA2008102398249A Pending CN101424283A (en) | 2008-12-12 | 2008-12-12 | Hydraulic power source system for ultra-high pressure tool |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191937A (en) * | 2011-03-23 | 2011-09-21 | 方莹 | Hydraulic cleave-cracking bench vehicle |
| CN102748341A (en) * | 2012-06-19 | 2012-10-24 | 江苏金三力机械制造有限公司 | Quick cylinder hydraulic system |
| CN102777431A (en) * | 2011-05-12 | 2012-11-14 | 淮南矿业(集团)有限责任公司 | Hydraulic pressure increasing device and method for increasing and measuring pressure by using hydraulic pressure increasing device |
| CN103148033A (en) * | 2013-03-26 | 2013-06-12 | 河海大学常州校区 | Alternating-loading hydraulic system |
| CN103148032A (en) * | 2013-03-26 | 2013-06-12 | 河海大学常州校区 | Alternating-loading hydraulic system |
| CN104314890A (en) * | 2014-11-11 | 2015-01-28 | 肇庆市长隆纸箱机械有限公司 | Pneumatic-hydraulic pressure increasing and maintaining mechanism for corrugated machine |
| CN105545840A (en) * | 2015-12-16 | 2016-05-04 | 佛山市恒力泰机械有限公司 | Green brick gas-exhaust mechanism and method controlled by volume cylinder |
| CN105782145A (en) * | 2016-05-05 | 2016-07-20 | 湖州市千金宝云机械铸件有限公司 | Hydraulic oil way of casting smelting raw material conveying pulverizer |
| CN110043783A (en) * | 2019-04-18 | 2019-07-23 | 黑龙江大学 | It is pressurized controllable type oiling device and correction oil injection method |
| CN110081039A (en) * | 2019-04-28 | 2019-08-02 | 深圳市中粤海洋能源科技有限公司 | A kind of energy tracking valve group and modularization ocean current power generation system |
| US10678464B2 (en) | 2016-03-11 | 2020-06-09 | EMC IP Holding Company LLC | Methods and apparatuses for data migration of a storage device |
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2008
- 2008-12-12 CN CNA2008102398249A patent/CN101424283A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191937B (en) * | 2011-03-23 | 2013-04-24 | 方莹 | Hydraulic cleave-cracking bench vehicle |
| CN102191937A (en) * | 2011-03-23 | 2011-09-21 | 方莹 | Hydraulic cleave-cracking bench vehicle |
| CN102777431B (en) * | 2011-05-12 | 2015-06-24 | 淮南矿业(集团)有限责任公司 | Hydraulic pressure increasing device and method for increasing and measuring pressure by using hydraulic pressure increasing device |
| CN102777431A (en) * | 2011-05-12 | 2012-11-14 | 淮南矿业(集团)有限责任公司 | Hydraulic pressure increasing device and method for increasing and measuring pressure by using hydraulic pressure increasing device |
| CN102748341A (en) * | 2012-06-19 | 2012-10-24 | 江苏金三力机械制造有限公司 | Quick cylinder hydraulic system |
| CN103148033B (en) * | 2013-03-26 | 2016-01-20 | 河海大学常州校区 | A kind of Study of Cyclic Loading hydraulic system |
| CN103148032A (en) * | 2013-03-26 | 2013-06-12 | 河海大学常州校区 | Alternating-loading hydraulic system |
| CN103148033A (en) * | 2013-03-26 | 2013-06-12 | 河海大学常州校区 | Alternating-loading hydraulic system |
| CN103148032B (en) * | 2013-03-26 | 2016-01-20 | 河海大学常州校区 | A kind of Study of Cyclic Loading hydraulic system |
| CN104314890A (en) * | 2014-11-11 | 2015-01-28 | 肇庆市长隆纸箱机械有限公司 | Pneumatic-hydraulic pressure increasing and maintaining mechanism for corrugated machine |
| CN105545840A (en) * | 2015-12-16 | 2016-05-04 | 佛山市恒力泰机械有限公司 | Green brick gas-exhaust mechanism and method controlled by volume cylinder |
| CN105545840B (en) * | 2015-12-16 | 2017-10-13 | 佛山市恒力泰机械有限公司 | A kind of adobe exhaust gear controlled by volume cylinder and method |
| US10678464B2 (en) | 2016-03-11 | 2020-06-09 | EMC IP Holding Company LLC | Methods and apparatuses for data migration of a storage device |
| CN105782145A (en) * | 2016-05-05 | 2016-07-20 | 湖州市千金宝云机械铸件有限公司 | Hydraulic oil way of casting smelting raw material conveying pulverizer |
| CN110043783A (en) * | 2019-04-18 | 2019-07-23 | 黑龙江大学 | It is pressurized controllable type oiling device and correction oil injection method |
| CN110043783B (en) * | 2019-04-18 | 2021-07-13 | 黑龙江大学 | Pressurization controllable oil injection device and method |
| CN110081039A (en) * | 2019-04-28 | 2019-08-02 | 深圳市中粤海洋能源科技有限公司 | A kind of energy tracking valve group and modularization ocean current power generation system |
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Open date: 20090506 |