CN2344438Y - Pressure autocompensation locking hydraulic cylinder - Google Patents
Pressure autocompensation locking hydraulic cylinder Download PDFInfo
- Publication number
- CN2344438Y CN2344438Y CN 98242798 CN98242798U CN2344438Y CN 2344438 Y CN2344438 Y CN 2344438Y CN 98242798 CN98242798 CN 98242798 CN 98242798 U CN98242798 U CN 98242798U CN 2344438 Y CN2344438 Y CN 2344438Y
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- piston
- locking hydraulic
- pressure
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The utility model relates to a pressure autocompensation locking hydraulic cylinder for the pile chucks of hydraulic type vibratory pile hammers. The piston rod of the hydraulic cylinder is provided with a cavity inside and the cavity is provided with an energy storage device. A long hose and a joint between a locking hydraulic cylinder and an externally connected energy storage device in the prior art are eliminated. When the external oil path of the pressure autocompensation locking hydraulic cylinder is cracked or other faults appears, the pressure autocompensation locking hydraulic cylinder can keep a constant locking force and can automatically compensate leakage. Therefore, the purpose of safe operation under the working conditions with high pressure, high frequency and strong vibration is achieved, the operating safety is increased, the defect that an energy storing device is ineffective because a pipe is cracked is avoided, and accidents resulted from the desquamation of objects being clamped because of the defect are reduced.
Description
The utility model relates to a kind of pile chuck locking hydraulic cylinder of hydraulic vibrohammer.
Known pile chuck locking hydraulic cylinder is a mesolow, is used for the small-power vibrohammer.The locking hydraulic cylinder adopts common two-way cylinder, externally by flexible pipe and joint and be tightly connected energy storage equipment and external hydraulic lock.This structure is write articles introduction at document " building machinery " on 90 years the 4th phases.
Said structure uses on small-power, little amplitude, low frequency vibration hammer still can.If be used in the occasion of high-power, large amplitude, high frequency strong vibration, just very easily cause disastrous effect.As everyone knows, there are two leakage paths in double acting hydraulic cylinder.Article one, be that fluid drains to the lower piston loculus of pressure from the big chamber of the higher oil cylinder of pressure by vent piston, another be fluid again from the piston loculus by the oil cylinder outside of leaking of the oil film on the piston rod.This phenomenon is particularly remarkable in the occasion of high-frequency and high-voltage strong vibration, and the rapid decline that this just must cause locking hydraulic cylinder chucking power causes that gripped object is out of control to come off, and causes the person and equipment breakdown.Be that compensation leaks the pressure that causes and reduce, mesolow pile chuck locking hydraulic cylinder generally adopt outside connect hydraulic pump through than Great Wall Software's pipe and joint to the hydraulic cylinder fuel feeding, with the compensation leakage rate, keep coupling mechanism force.
But said structure fail fundamentally the to solve problem of reliability and safety is used in high frequency strong vibration occasion still to have huge hidden danger.Because on high-power, large amplitude, high frequency strong vibration pile monkey, when adopting said structure, the loosening and hose fracture phenomenon of joint takes place because of the high frequency strong vibration very easily.At this moment, the pressure source oil pump or the energy storage equipment of Guo Louing is ineffective by way of compensation, causes the reduction rapidly of working chamber pressure thus.Pile locking force plunges, and causes being held part and comes off, and causes the person or equipment breakdown, can not satisfy the requirement of piling machinery safe construction.
The purpose of this utility model is that a kind of pressure self compensation locking hydraulic cylinder that is applicable to high-power, large amplitude, high frequency strong vibration pile monkey will be provided; guarantee when motor or power source break down the loosening leakage of oil of shutdown or pipeline breaking and joint; even under the cut situation of all outside duct couplings; still can seal the pipeline of locking hydraulic cylinder and external communications automatically; automatically pressurize compensation keeps chucking power constant.
The purpose of this utility model is achieved in that this hydraulic cylinder comprises cylinder barrel, cylinder barrel one end connects fairlead, piston rod is positioned at fairlead, piston rod connects piston, piston is positioned at cylinder barrel, and cavity is arranged in the piston rod, dress energy storage equipment in the cavity, the cylinder barrel other end connects the cylinder bottom assembly, and the cylinder bottom assembly connects hydraulic control one-way valve.
Described energy storage equipment is that the cavity in the piston rod connects spacing spigot nut, and accumulator piston one end is positioned at spacing spigot nut, and the other end is sleeve spring and water conservancy diversion guide ring successively.
Energy storage equipment of the present utility model is built in the piston rod, has cancelled the Great Wall Software's pipe and the joint of locking in the prior art between hydraulic cylinder and the external energy storage equipment.When the outside oil circuit of locking hydraulic cylinder breaks or other fault occurs, the coupling mechanism force of locking hydraulic cylinder is constant, and can compensate leakage automatically, has reached the purpose of using safely under high pressure, high frequency strong vibration operating mode, improve the service efficiency of equipment, increased the safety of using.Under abominable service condition, improved the reliability of fastening system to greatest extent.Avoided because of pipeline breaking causes the defective that energy storage equipment lost efficacy, eliminated the accident that the gripped object that therefore brings comes off and causes, satisfied the requirement of piling machinery safe construction.
Elaborate below in conjunction with drawings and Examples.
Accompanying drawing is the structure chart of an embodiment of the present utility model.
1 dust ring among the figure, 2 combination sealings, 3 fairleads, 4 piston rods, 5. water conservancy diversion guide ring, 6. cylinder barrel, 7 springs, 8 pistons, 9 combined seal rings, 10. spacing spigot nut, 11. accumulator oil sealings, 12. accumulator piston, 13 cylinder bottom assemblies, 14 hydraulic control one-way valves.
In the accompanying drawings, the cylinder barrel 6 left ends fairlead 3 that is threaded, piston rod 4 is positioned at fairlead 3, the piston rod 4 right-hand members outside is by the piston 8 that is threaded, and piston 8 is positioned at cylinder barrel 6, in the piston rod 4 cavity is arranged, dress energy storage equipment in the cavity, cylinder barrel 6 right-hand members connect cylinder bottom assembly 13.
Cavity right-hand members in the piston rod 4 spacing spigot nut 10 that is threaded, accumulator piston 12 right-hand members are positioned at spacing spigot nut 10, and accumulator piston 12 left ends are sleeve spring 7 and water conservancy diversion guide ring 5 successively.
Dust ring 1 and combination sealing 2 are contained in the fairlead 3.Combined seal ring 9 is contained on the piston 8.Accumulator oil sealing 11 is contained on the accumulator piston 12
In the cylinder bottom assembly 13 leader channel is arranged, leader channel inlet plug-in mounting hydraulic control one-way valve 14.Hydraulic control one-way valve 14 is a pilot signal with the loculus pressure signal, controls the passage of big chamber fluid and outside oil circuit break-make.
When the oil-feed of the big chamber of oil cylinder, pressure oil at first enters the big chamber of oil cylinder through hydraulic control one-way valve 14.Under the effect of pressure oil, accumulator piston 12 moves to left, and compresses spring 7, has reached the purpose of energy storage.Simultaneously, piston 8 and piston rod 4 move to left, and reach the purpose of clamping object.When fuel cut-off or oil pump and motor damage and in working oil pipe takes place and shaken when breaking, hydraulic control one-way valve 14 has sealed the passage that leads to the outside from big chamber under the effect of big cavity pressure oil.At this moment, under the effect of spring 7, accumulator piston 12 can move to right at any time, because of the pressure that various leakages cause reduces, keeps the coupling mechanism force of locking hydraulic cylinder constant substantially with compensation, has satisfied the requirement of safe construction.
When the loculus oil-feed, under the effect of pilot pressure, hydraulic control one-way valve 14 is opened.Piston 8 and piston rod 4 move to right, and accumulator piston 12 also moves to right to extreme position, and big chamber fluid is flowed back to fuel tank, has finished a working cycles.
Claims (2)
1, a kind of pressure self compensation locking hydraulic cylinder, this hydraulic cylinder comprises cylinder barrel, cylinder barrel one end connects fairlead, piston rod is positioned at fairlead, and piston rod connects piston, and piston is positioned at cylinder barrel, the cylinder barrel other end connects the cylinder bottom assembly, the cylinder bottom assembly connects hydraulic control one-way valve, it is characterized in that cavity is arranged in the piston rod, dress energy storage equipment in the cavity.
2, pressure self compensation locking hydraulic cylinder according to claim 1 is characterized in that energy storage equipment is that the interior cavity of piston rod connects spacing spigot nut, and accumulator piston one end is positioned at spacing spigot nut, and the other end is sleeve spring and water conservancy diversion guide ring successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242798 CN2344438Y (en) | 1998-11-27 | 1998-11-27 | Pressure autocompensation locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242798 CN2344438Y (en) | 1998-11-27 | 1998-11-27 | Pressure autocompensation locking hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2344438Y true CN2344438Y (en) | 1999-10-20 |
Family
ID=33989309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98242798 Expired - Fee Related CN2344438Y (en) | 1998-11-27 | 1998-11-27 | Pressure autocompensation locking hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2344438Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593986A (en) * | 2016-12-06 | 2017-04-26 | 泸州长江液压密封件有限公司 | Feeding hydraulic cylinder suitable for harsh environment |
| CN106762939A (en) * | 2016-12-06 | 2017-05-31 | 泸州长江液压密封件有限公司 | A kind of hydraulic structure for controlling clamping drill bit of drilling machine |
| CN114103724A (en) * | 2022-01-06 | 2022-03-01 | 三一重机有限公司 | Battery locking control method and device and electric working machine |
-
1998
- 1998-11-27 CN CN 98242798 patent/CN2344438Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593986A (en) * | 2016-12-06 | 2017-04-26 | 泸州长江液压密封件有限公司 | Feeding hydraulic cylinder suitable for harsh environment |
| CN106762939A (en) * | 2016-12-06 | 2017-05-31 | 泸州长江液压密封件有限公司 | A kind of hydraulic structure for controlling clamping drill bit of drilling machine |
| CN114103724A (en) * | 2022-01-06 | 2022-03-01 | 三一重机有限公司 | Battery locking control method and device and electric working machine |
| CN114103724B (en) * | 2022-01-06 | 2023-09-08 | 三一重机有限公司 | Battery locking control method and device and electric working machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100903087B1 (en) | Double acting type hydraulic top bracing for reducing the vibration from engine | |
| CN2344438Y (en) | Pressure autocompensation locking hydraulic cylinder | |
| KR100609051B1 (en) | Hydraulic top bracing for reducing the vibration from engine | |
| CN109058187A (en) | A kind of off-load buffer hydraulic system | |
| US5125234A (en) | Hydraulic cylinder apparatus of the type actuated by booster | |
| CN110685738A (en) | Pressure relief device for monitoring pressure of paste filling pipeline and control method | |
| CN2639554Y (en) | Electrohydraulic high-pressure plunger pump | |
| CN103438038B (en) | Thermal deburring bed hydraulic system and controlling method thereof | |
| CN2233480Y (en) | Pneumatic hydraulic cylinder | |
| CN213575657U (en) | Slurry discharge valve suitable for coal mine paste filling | |
| CN109695754B (en) | Hydraulic oil inlet valve | |
| CN210462140U (en) | Hydraulic speed reduction locking device of intelligent pipeline plugging robot | |
| CN111365310A (en) | Hydraulic unloading system | |
| CN2578586Y (en) | Assembled water hammer pump | |
| CN208565943U (en) | Reducer tee weld leakage fixture | |
| CN208099162U (en) | A kind of overload protection arrangement | |
| CN211901760U (en) | Double-layer high-pressure cylinder for high-pressure pneumatic stop valve | |
| CN211777966U (en) | Ultrahigh-pressure mechanical safety valve bank with exhaust function | |
| CN214248269U (en) | Power cut-off hydraulic control system and engineering machinery | |
| CN100378395C (en) | Automatic deseal device of pipeline pluger | |
| CN209875600U (en) | Pneumatic control high-pressure unloading valve | |
| CN216343141U (en) | Dustproof hydraulic system | |
| CN201651655U (en) | Hydraulic clamping pipe blocker for leaking stoppage under pressure | |
| CN219281902U (en) | Piston type compression cylinder | |
| CN219827290U (en) | Hydraulic system for baler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |