CN102605784A - Oil supply device of clamping cylinder of hydraulic static pile press - Google Patents
Oil supply device of clamping cylinder of hydraulic static pile press Download PDFInfo
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- CN102605784A CN102605784A CN2012100848454A CN201210084845A CN102605784A CN 102605784 A CN102605784 A CN 102605784A CN 2012100848454 A CN2012100848454 A CN 2012100848454A CN 201210084845 A CN201210084845 A CN 201210084845A CN 102605784 A CN102605784 A CN 102605784A
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Abstract
The invention discloses an oil supply device of a clamping cylinder of a hydraulic static pile press. The oil supply device comprises a pile clamping cylinder (1), a main pile clamping cylinder (3) and an auxiliary pile clamping cylinder (2), a rodless cavity of the pile clamping cylinder (1) is connected with oil outlets of a first check valve (6) and a second check valve (7), a port A1 of a first throttle valve (4) is connected with a rodless cavity of the main pile clamping cylinder (3), a port A2 of a second throttle valve (5) is connected with a rodless cavity of the auxiliary pile clamping cylinder (2), an oil inlet of the first check valve (6) is connected with a port B1 of the first throttle valve (4), and an oil inlet of the second check valve (7) is connected with a port B2 of the second throttle valve (5). The oil supply device is simple in structure and operation and high in work efficiency and reliability, and repeated clamping operation due to loosening of the clamping cylinder can be avoided.
Description
Technical field
The present invention relates to a kind of hydraulic static pile pressing machine and clamp oil cylinder, particularly relate to the recharging oil device that a kind of hydraulic static pile pressing machine clamps oil cylinder.
Background technology
Hydraulic static pile pressing machine relies on a folder stake oil cylinder to hold preformed pile tightly, through the piling oil cylinder the pile clamping box pressed downward, thereby be pressed into ground to preformed pile.The folder stake oil cylinder of existing hydraulic static pile pressing machine is when holding state tightly, and the hydraulic oil of rodless cavity only gets into through hydraulic control one-way valve and pins pressurize, so that pile locking force to be provided; There is following shortcoming in it: because of there are certain leakage in hydraulic control one-way valve and folder stake oil cylinder, along with the increase of leaking oil, oil cylinder working-pressure reduces; Pile locking force can be more and more littler, so, in piling process; Folder stake oil cylinder often need repeatedly pressurize troublesome poeration, inefficiency; If do not have timely ftercompction, skid toward the contact meeting, damage preformed pile and stake machine.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of to avoid clamping oil cylinder loosening and the hydraulic static pile pressing machine operation that repeats to clamp clamps the recharging oil device of oil cylinder.
In order to solve the problems of the technologies described above; Hydraulic static pile pressing machine provided by the invention clamps the recharging oil device of oil cylinder; Comprise folder stake oil cylinder, main piling oil cylinder and secondary piling oil cylinder; The rodless cavity of described folder stake oil cylinder is connected with the oil-out of first one way valve with second one way valve, and the A1 mouth of first throttle valve links to each other with the rodless cavity of described main piling oil cylinder, and the A2 mouth of second choke valve links to each other with the rodless cavity of described secondary piling oil cylinder; The oil-in of described first one way valve links to each other with the B1 mouth of described first throttle valve, and the oil-in of described second one way valve links to each other with the B2 mouth of described second choke valve.
The overflow valve oil-in links to each other with the B1 mouth of described first throttle valve.
The hydraulic static pile pressing machine of employing technique scheme clamps the recharging oil device of oil cylinder; " folder stake " handle of operation banked direction control valves makes the rodless cavity of the hydraulic oil of dynamical system from 4 parallel clamp charge of oil cylinders of hydraulic control one-way valve entering, and the oil cylinder piston bar stretches out; Preformed pile is in is held tightly state; Banked direction control valves is returned to meta, because hydraulic control one-way valve has the pressurize effect, preformed pile is in is always held tightly state; " piling one " handle of operation banked direction control valves makes the hydraulic oil of dynamical system get into the rodless cavity of main piling oil cylinder, main piling cylinder action, and it is descending that this moment, main dowel pressing cylinder piston bar promoted pile clamping box, and pile clamping box is had preformed pile in arms and is pressed on ground.Because hydraulic control one-way valve and the situation that clamps oil cylinder existence leakage; Oil pressure slowly reduces; When the rodless cavity pressure of main piling oil cylinder greater than the pressure that clamps oil cylinder, when pressure reduction can be opened first one way valve, the power oil of system got into the rodless cavity of folder stake oil cylinder through the first throttle valve; Replenish the fluid that folder stake oil cylinder leaks, preformed pile will be in is always held tightly state; In like manner, the secondary pressure-controlled valve piece in the banked direction control valves is used to operate secondary piling oil cylinder, when secondary piling oil cylinder when pressing down, system dynamic oil can add to the rodless cavity of folder stake oil cylinder through second choke valve and second one way valve.The present invention is simple in structure, and reliability is high, can avoid clamping the loosening and operation that repeats to clamp of oil cylinder.
In sum, the present invention is a kind of simple in structure, simple to operate, high efficiency, and reliability is high, and it is loosening and the hydraulic static pile pressing machine operation that repeats to clamp clamps the recharging oil device of oil cylinder to avoid clamping oil cylinder.
Description of drawings
Fig. 1 is that the present invention implements principle schematic.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described further.
Referring to Fig. 1; Banked direction control valves 10 is made up of folder stake control valve piece 11, secondary pressure-controlled valve piece 12, main pressure-controlled valve piece 13 and gear control valve piece 14; The rodless cavity of folder stake oil cylinder 1 is connected with the oil-out of first one way valve 6 and second one way valve 7; The rod chamber of folder stake oil cylinder 1 is connected with the folder stake control valve piece 11 of banked direction control valves 10, and the rodless cavity of folder stake oil cylinder 1 is connected with the folder stake control valve piece 11 of banked direction control valves 10 through hydraulic control one-way valve 9, and the secondary pressure-controlled valve piece 12 of banked direction control valves 10 is connected with secondary piling oil cylinder 2; The main pressure-controlled valve piece 13 of banked direction control valves 10 is connected with main piling oil cylinder 3; The A1 mouth of first throttle valve 4 links to each other with the rodless cavity of described main piling oil cylinder 3, and the A2 mouth of second choke valve 5 links to each other with the rodless cavity of described secondary piling oil cylinder 2, and the oil-in of described first one way valve 6 links to each other with the B1 mouth of described first throttle valve 4; The oil-in of described second one way valve 7 links to each other with the B2 mouth of described second choke valve 5, and overflow valve 8 oil-ins link to each other with the B1 mouth of described first throttle valve 4.
Referring to Fig. 1; Operating principle of the present invention: " folder stake " handle of operation banked direction control valves 10, make the rodless cavity of the hydraulic oil of dynamical system from 4 parallel clamp charge of oil cylinders 1 of hydraulic control one-way valve 9 entering, the oil cylinder piston bar stretches out; Preformed pile is in is held tightly state; Banked direction control valves 10 is returned to meta, because hydraulic control one-way valve 9 has the pressurize effect, preformed pile is in is always held tightly state; " piling one " handle of operation banked direction control valves 10 makes the hydraulic oil of dynamical system get into the rodless cavity of main piling oil cylinder 3, main piling oil cylinder 3 actions, and it is descending that this moment, main piling oil cylinder 3 piston rods promoted pile clamping box, and pile clamping box is had preformed pile in arms and is pressed on ground.Because hydraulic control one-way valve 9 and the situation that clamps oil cylinder 1 existence leakage; Oil pressure slowly reduces; When the rodless cavity pressure of main piling oil cylinder 3 greater than the pressure that clamps oil cylinder 1, when pressure reduction can be opened first one way valve 6, the power oil of system got into the rodless cavity of folder stake oil cylinders 1 through first throttle valve 4; Replenish the fluid that folder stake oil cylinder 1 leaks, preformed pile will be in is always held tightly state; In like manner, the secondary pressure-controlled valve piece 12 in the banked direction control valves 10 is used to operate secondary piling oil cylinder 2, when secondary piling oil cylinder 2 when pressing down, system dynamic oil can add to the rodless cavity of folder stake oil cylinder 1 through second choke valve 5 and second one way valve 7.
In the middle of the first throttle valve 4 and first one way valve 6, there is a branch road to receive overflow valve 8, this is to combine with the actual condition of hydraulic static pile pressing machine and design, and makes this recharging oil device more meet actual mode of occupation.When reality was used, pile locking force generally was limited to about 2.5 times of pile driving pressure, if pile locking force is excessive, may pile holder be split.When only with two main piling oil cylinder 3 pilings, pile driving pressure is less, and required pile locking force is also less.But the piling oil pressure may be higher, this moment system pressure oil when the first throttle valve 4 and first one way valve 6 add to folder stake oil cylinder 1, if having overflow valve 8, piling oil pressure will pass to a folder stake oil cylinder 1, cause folder stake oil pressure to increase, pile locking force is excessive and press from both sides and split stake.And connect overflow valve 8, set up overflow valve 8 at suitable pressure.Behind the piling pressure oil process first throttle valve 4, overflow valve 8 will guarantee to arrive the setting value that the oil pressure that presss from both sides the stake oil cylinders can not surpass overflow valve 8 through first one way valve 6.
Claims (2)
1. a hydraulic static pile pressing machine clamps the recharging oil device of oil cylinder; Comprise folder stake oil cylinder (1), main piling oil cylinder (3) and secondary piling oil cylinder (2); It is characterized in that: the rodless cavity of described folder stake oil cylinder (1) is connected with the oil-out of first one way valve (6) with second one way valve (7); The A1 mouth of first throttle valve (4) links to each other with the rodless cavity of described main piling oil cylinder (3); The A2 mouth of second choke valve (5) links to each other with the rodless cavity of described secondary piling oil cylinder (2), and the oil-in of described first one way valve (6) links to each other with the B1 mouth of described first throttle valve (4), and the oil-in of described second one way valve (7) links to each other with the B2 mouth of described second choke valve (5).
2. hydraulic static pile pressing machine according to claim 1 clamps the recharging oil device of oil cylinder, it is characterized in that: overflow valve (8) oil-in links to each other with the B1 mouth of described first throttle valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100848454A CN102605784A (en) | 2012-03-28 | 2012-03-28 | Oil supply device of clamping cylinder of hydraulic static pile press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100848454A CN102605784A (en) | 2012-03-28 | 2012-03-28 | Oil supply device of clamping cylinder of hydraulic static pile press |
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| Publication Number | Publication Date |
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| CN102605784A true CN102605784A (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100848454A Pending CN102605784A (en) | 2012-03-28 | 2012-03-28 | Oil supply device of clamping cylinder of hydraulic static pile press |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295813A (en) * | 2000-04-12 | 2001-10-26 | Yanmar Diesel Engine Co Ltd | Hydraulic circuit for work machine |
| CN201261883Y (en) * | 2008-07-09 | 2009-06-24 | 赵黎明 | Pile clamping pressure and pile compressing pressure synchronous controller of hydraulic static pile-compressing machine |
| CN202047411U (en) * | 2011-01-24 | 2011-11-23 | 湖南坤宇重工集团天德机械有限公司 | Quasi-constant power pile-pressing machine hydraulic control system |
| CN202543928U (en) * | 2012-03-28 | 2012-11-21 | 恒天九五重工有限公司 | Oil replenishing device of pile clamping oil cylinder of hydraulic static pile driver |
-
2012
- 2012-03-28 CN CN2012100848454A patent/CN102605784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295813A (en) * | 2000-04-12 | 2001-10-26 | Yanmar Diesel Engine Co Ltd | Hydraulic circuit for work machine |
| CN201261883Y (en) * | 2008-07-09 | 2009-06-24 | 赵黎明 | Pile clamping pressure and pile compressing pressure synchronous controller of hydraulic static pile-compressing machine |
| CN202047411U (en) * | 2011-01-24 | 2011-11-23 | 湖南坤宇重工集团天德机械有限公司 | Quasi-constant power pile-pressing machine hydraulic control system |
| CN202543928U (en) * | 2012-03-28 | 2012-11-21 | 恒天九五重工有限公司 | Oil replenishing device of pile clamping oil cylinder of hydraulic static pile driver |
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Application publication date: 20120725 |