CN201306324Y - Hydraulic power source of ultra high pressure tool - Google Patents
Hydraulic power source of ultra high pressure tool Download PDFInfo
- Publication number
- CN201306324Y CN201306324Y CNU2008201243918U CN200820124391U CN201306324Y CN 201306324 Y CN201306324 Y CN 201306324Y CN U2008201243918 U CNU2008201243918 U CN U2008201243918U CN 200820124391 U CN200820124391 U CN 200820124391U CN 201306324 Y CN201306324 Y CN 201306324Y
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- oil
- cylinder
- high pressure
- valve
- hydraulic power
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- 238000010008 shearing Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 9
- 239000000945 filler Substances 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
本实用新型属于液压设备领域，特别是一种是超高压工具的液压动力源。其结构如下：油泵的进油口与油箱连通，油泵的出油口与换向阀的进油口连通，油泵的出油口还通过溢流阀与油箱连通，换向阀的右位出口与工作缸有杆腔连通，换向阀的右位出口还通过液控单向阀与增压缸有杆腔连通；换向阀的左位出口与增压缸无杆腔连通，增压缸无杆腔通过单向阀、中心孔道和增压腔与工作缸无杆腔连通，工作缸活塞的端部设有剪切刀具。本实用新型可方便地实现设备执行元件的“低压快进”，有效地提高了工作效率，其具有成本低、工作稳定、寿命高、工效高、维护方便，抗温度变化和环境污染能力强等优点，适合于建筑施工工地长期露天使用。
The utility model belongs to the field of hydraulic equipment, in particular to a hydraulic power source of an ultra-high pressure tool. Its structure is as follows: the oil inlet of the oil pump is connected with the oil tank, the oil outlet of the oil pump is connected with the oil inlet of the reversing valve, the oil outlet of the oil pump is also connected with the oil tank through the overflow valve, and the right outlet of the reversing valve is connected with the oil tank. The working cylinder is connected with the rod chamber, and the right outlet of the reversing valve is also connected with the rod chamber of the booster cylinder through the hydraulic control check valve; the left outlet of the reversing valve is connected with the rodless chamber of the booster cylinder, and the booster cylinder has no The rod chamber communicates with the rodless chamber of the working cylinder through a one-way valve, a central channel and a pressurized chamber, and a shearing tool is provided at the end of the piston of the working cylinder. The utility model can conveniently realize the "low-voltage fast-forwarding" of the device's actuators, effectively improving the work efficiency, and has the advantages of low cost, stable work, long life, high work efficiency, convenient maintenance, strong resistance to temperature changes and environmental pollution, etc. Advantages, suitable for long-term open-air use on construction sites.
Description
Technical field
The utility model belongs to the hydraulic equipment field, and particularly a kind of is the hydraulic power supply 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 purpose of this utility model 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 utility model is as follows: adopt the hydraulic power supply of ultra-high pressure tool of the present utility model, 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 utility model
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 utility model 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 utility model 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 oil channel of Pilot operated check valve 4 is in low pressure, Pilot operated check valve oppositely ends, the oil circuit of pressurized cylinder is cut off, and makes pressurized cylinder piston keep motionless, and the output fluid of oil pump all enters clutch release slave cylinder through central duct, slave cylinder piston is stretched out fast, realize " 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 rodless cavity 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, i.e. returned the putting in place of slave cylinder piston 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 rodless cavity 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201243918U CN201306324Y (en) | 2008-12-12 | 2008-12-12 | Hydraulic power source of ultra high pressure tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201243918U CN201306324Y (en) | 2008-12-12 | 2008-12-12 | Hydraulic power source of ultra high pressure tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306324Y true CN201306324Y (en) | 2009-09-09 |
Family
ID=41098790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201243918U Expired - Fee Related CN201306324Y (en) | 2008-12-12 | 2008-12-12 | Hydraulic power source of ultra high pressure tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306324Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182723A (en) * | 2010-08-02 | 2011-09-14 | 湖南协力液压有限公司 | Delivery test platform for hydraulic cylinder |
| CN111810467A (en) * | 2019-04-12 | 2020-10-23 | 北京振兴计量测试研究所 | Interchangeable range liquid pressure controller |
-
2008
- 2008-12-12 CN CNU2008201243918U patent/CN201306324Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182723A (en) * | 2010-08-02 | 2011-09-14 | 湖南协力液压有限公司 | Delivery test platform for hydraulic cylinder |
| CN111810467A (en) * | 2019-04-12 | 2020-10-23 | 北京振兴计量测试研究所 | Interchangeable range liquid pressure controller |
| CN111810467B (en) * | 2019-04-12 | 2022-04-12 | 北京振兴计量测试研究所 | Interchangeable range liquid pressure controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20111212 |