CN200949580Y - Hydraulic oil cylinder guide sleeve cushioning device - Google Patents
Hydraulic oil cylinder guide sleeve cushioning device Download PDFInfo
- Publication number
- CN200949580Y CN200949580Y CN 200620064161 CN200620064161U CN200949580Y CN 200949580 Y CN200949580 Y CN 200949580Y CN 200620064161 CN200620064161 CN 200620064161 CN 200620064161 U CN200620064161 U CN 200620064161U CN 200949580 Y CN200949580 Y CN 200949580Y
- Authority
- CN
- China
- Prior art keywords
- guide sleeve
- piston
- buffer
- model
- utility
- 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
- Actuator (AREA)
Abstract
The utility model relates to a hydraulic cylinder guide sleeve buffer device which comprises a guide sleeve and a piston and piston rod provided wherein. A cushion chamber and an oil port are provided within the guide sleeve and cushion clearance is reserved between the guide sleeve and the piston. Within the distance before the piston reaches the the terminal of the stroke, the oil pressure of the cushion chamber increases, the utility model can absorb shock and buffer and remove noise through the cushion clearance between the piston and the guide sleeve and meet the requirement of buffering according to the change of design tolerance. Thus the device has the advantages of simple and practical structure and little starting pressure.
Description
[technical field]
The utility model relates to a kind of damping device, especially relates to a kind of hydraulic jack guide sleeve damping device.
[background technique]
Mechanical automation is one of direction of modern mechanical development.Hydraulics is to realize the technical foundation of mechanical automation.Oil hydraulic cylinder is as the executive component of hydraulic unit, and its successful operation is the essential condition that realizes mechanical automation.Requirement according to real service condition, many oil hydraulic cylinders require to adopt buffering at the stroke terminal part, purpose is to eliminate piston that inertial force and hydraulic coupling because of piston caused and the mechanical impact between the cylinder head cylinder bottom, make parts damage, simultaneously also in order to reduce the piston noise that liquid sends when changing moving direction.
The working principle of damping device is in the segment distance before the piston arrives stroke terminal, part or all of managing the oil-discharging cavity inner fluid is closed, make it pass through to discharge in throttling pore or the slit, thereby making the fluid that is closed produce suitable compensator or trimmer pressure acts on the oil extraction side of piston, resist mutually with the inertial force of piston, to reach the purpose of retarding braking.For general traditional design, though damping device is of a great variety, but its essence all is to increase by one section fitting surface at the piston front-back, play cushion stroke, but in some application, because the component of piston rod or corresponding cooperation are when bearing very large lateral force, fitting surface is easy to generate great malalignment, cause the operation difficulty, thereby cause mechanical failure.
[model utility content]
In order to overcome the above-mentioned shortcoming of prior art, the utility model provide a kind of simple and practical, breakout pressure is less, and can realize the hydraulic jack guide sleeve damping device of the requirement of cushioning effect according to the change of design tolerance.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of hydraulic jack guide sleeve damping device, comprise guide sleeve, and be installed in guide sleeve interior piston and piston rod, and in guide sleeve, being provided with buffer cavity and hydraulic fluid port, described guide sleeve and piston space leave the buffer gap.
Described buffer gap is a buffer cavity, and this buffer cavity is positioned at the below of hydraulic fluid port, at the end of piston stroke.
The beneficial effects of the utility model are: in the segment distance before the piston arrives stroke terminal, the oil pressure of buffer cavity increases, by the buffer gap between piston and guide sleeve, the effect that just can play damping, buffering and abate the noise, and can realize cushioning effect according to the change of design tolerance, have simple and practical, breakout pressure is less requires advantage.
[description of drawings]
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-guide sleeve, 2-piston, 3-piston rod, 4-hydraulic fluid port, 5-buffer cavity.
[embodiment]
Referring to Fig. 1, a kind of hydraulic jack guide sleeve damping device, comprise guide sleeve 1, and be installed in piston 2 and piston rod 3 in the guide sleeve 1, in guide sleeve 1, be provided with hydraulic fluid port 4 and buffer cavity 5, this buffer cavity 5 is positioned at the below of hydraulic fluid port 4, at the end of piston 2 strokes, in the segment distance before piston 3 arrives stroke terminal, the effect that buffer cavity 5 by 1 of piston 3 and guide sleeve just can play damping, buffering and abate the noise, and can require to change design tolerance according to cushioning effect, the utlity model has the advantage simple and practical, that breakout pressure is less.
Claims (2)
1, a kind of hydraulic jack guide sleeve damping device comprises guide sleeve, and is installed in piston and piston rod in the guide sleeve, and it is characterized in that: be provided with buffer cavity and hydraulic fluid port in guide sleeve, described guide sleeve and piston space leave the buffer gap.
2, hydraulic jack guide sleeve damping device as claimed in claim 1, it is characterized in that: described buffer gap is a buffer cavity, this buffer cavity is positioned at the below of hydraulic fluid port, at the end of piston stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620064161 CN200949580Y (en) | 2006-09-10 | 2006-09-10 | Hydraulic oil cylinder guide sleeve cushioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620064161 CN200949580Y (en) | 2006-09-10 | 2006-09-10 | Hydraulic oil cylinder guide sleeve cushioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200949580Y true CN200949580Y (en) | 2007-09-19 |
Family
ID=38892122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620064161 Expired - Fee Related CN200949580Y (en) | 2006-09-10 | 2006-09-10 | Hydraulic oil cylinder guide sleeve cushioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949580Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010031A1 (en) * | 2010-07-23 | 2012-01-26 | 湖南三一智能控制设备有限公司 | Hydraulic oil cylinder and related equipments, hydraulic buffer system, excavator and concrete pump truck |
-
2006
- 2006-09-10 CN CN 200620064161 patent/CN200949580Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010031A1 (en) * | 2010-07-23 | 2012-01-26 | 湖南三一智能控制设备有限公司 | Hydraulic oil cylinder and related equipments, hydraulic buffer system, excavator and concrete pump truck |
| US9394927B2 (en) | 2010-07-23 | 2016-07-19 | Hunan Sany Intelligent Control Equipment Co., Ltd. | Hydraulic oil cylinder and related equipments, hydraulic buffer system, excavator and concrete pump truck |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202483985U (en) | Buffering hydraulic cylinder | |
| CN201330768Y (en) | Floating type cushioning device for hydraulic cylinder | |
| CN201284769Y (en) | Floating buffering mechanism of hydraulic cylinder | |
| CN202510450U (en) | Hydraulic oil cylinder and hydraulic system | |
| CN200949580Y (en) | Hydraulic oil cylinder guide sleeve cushioning device | |
| CN201496340U (en) | Multi-stage hydraulic cylinder with damping device of mining dumping truck, | |
| CN204823604U (en) | High -efficient damping device at bottom of elevator sedan -chair with double shock absorption effect | |
| CN2628257Y (en) | Hydraulic press with sliding block downward vernier adjustment and buffer device | |
| CN200971889Y (en) | Hydraulic gas pressure cylinder, with float buffer ring | |
| CN201232584Y (en) | Improvement for cylinder crankshaft structure of internal combustion engine | |
| CN204419758U (en) | A kind of buffering hydraulic cylinder | |
| CN2903562Y (en) | Impacting mechanical damper | |
| CN206092571U (en) | Damping type pneumatic cylinder | |
| CN101474887B (en) | Air-cushion buffering mechanism | |
| CN201391511Y (en) | Hydraulic cylinder cushioning device | |
| CN205154067U (en) | A overhead traveling crane compensation arrangement for reducing gas pitcher pressure oscillation | |
| CN2752540Y (en) | Liquid damper device | |
| CN201245853Y (en) | Large arm oil cylinder of digging loader | |
| CN203655783U (en) | Hydraulic cylinder with throttling and buffering mechanism | |
| CN202756342U (en) | Long-stroke quick hydraulic cylinder buffer device | |
| CN201330769Y (en) | Surface-contact type cushioning device for hydraulic cylinder | |
| CN202659628U (en) | Buffer device for hydraulic cylinder of plunger | |
| CN202176579U (en) | Oil cylinder end buffering device | |
| CN201843858U (en) | Hydraulic oil cylinder using floating one-way valve plate for cushioning | |
| CN202040037U (en) | Displacement control mechanism for plunger pump |
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: 20070919 Termination date: 20110910 |