CN201125902Y - Oil cylinder buffering device - Google Patents
Oil cylinder buffering device Download PDFInfo
- Publication number
- CN201125902Y CN201125902Y CNU2007200417091U CN200720041709U CN201125902Y CN 201125902 Y CN201125902 Y CN 201125902Y CN U2007200417091 U CNU2007200417091 U CN U2007200417091U CN 200720041709 U CN200720041709 U CN 200720041709U CN 201125902 Y CN201125902 Y CN 201125902Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- opening
- oil
- return opening
- 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
Abstract
The utility model relates to an oil cylinder buffering mechanism, especially to a hydraulic plunger piston oil cylinder buffering mechanism which comprises an oil cylinder, a plunger piston, a flange and a sealing component. The lower part of the oil cylinder is provided with an oil inlet opening and an oil outlet opening. The sealing component is provided between the oil cylinder and the plunger piston. The plane surface of the flange is pressed on the upper side of the sealing component which is installed on the opening at the top part of the oil cylinder and is integrated with the oil cylinder. A surrounding oil return opening is provided at the intersection between the oil return opening of the oil cylinder and the inner circumferential wall of the oil cylinder. The smallest dimension of the inner opening is larger than or equal with that of the projection of the diameter of the oil returning opening. A clearance is provided between the inner side surface of the projection and the cylindrical working surface of the plunger piston. The projection is on the inner circumferential wall of the oil cylinder and is an annular projection surrounding the oil returning opening. The smallest dimension of the inner opening is larger than that of the diameter of the oil returning opening. The position of the projected inner opening at the lowest end of the cylinder is higher than the lowest point of the cylindrical surface when the plunger piston falls to the bottom of the oil cylinder. The oil cylinder buffering mechanism according to the utility model has the advantages of simple structure, convenient machining and good buffering effect. The collision between the plunger piston and the oil cylinder can be totally avoided.
Description
Technical field
The utility model relates to a kind of damping device, especially a kind of hydraulic oil plunger cylinder damping device.
Background technique
Hydraulics is to realize the technical foundation of mechanical automation, and oil hydraulic cylinder is as the executive component of hydraulic unit, and its successful operation is the essential condition that realizes mechanical automation.According to the requirement of real service condition, many oil hydraulic cylinders require to adopt buffering at the stroke terminal part, and purpose is to eliminate plunger that inertial force and hydraulic coupling because of plunger caused and the mechanical impact between the cylinder bottom, makes parts damage.Prior art is at plunger base processing buffer oil pocket as the 200510031480.9 a kind of cylinder buffering device of hydraulic plunger cylinder that provide, and at oil cylinder bottom processing buffer post, buffering oil pocket and bumper post all are processed with the spiral oil groove along axial direction.This structure processing more complicated, and, when the processing buffer oil pocket of bottom, can influence piston intensity because piston generally all is hollow, must strengthen the thickness of bottom, cause that materials increase, and increased the manufacture cost of product.
Summary of the invention
The purpose of this utility model provides hydraulic plunger damping device a kind of simple in structure, easily manufactured.
The technical solution of the utility model is a kind of cylinder buffer device, comprise oil cylinder, plunger, flange and Sealing, filler opening and return opening are arranged at the oil cylinder bottom, between oil cylinder and the plunger Sealing is arranged, the plane of flange is pressed in the Sealing upside at the place, hole that is loaded on the oil cylinder top, and be connected as a single entity with oil cylinder, the inner circle wall intersection of the return opening of oil cylinder and oil cylinder has one around return opening and the endoporus minimum dimension projection more than or equal to the return opening diameter, and is gapped between the inner side surface that this is protruding and the column working of plunger.
The projection at in-oil cylinder return opening place is a ring-like projection around the sealing of return opening, and this protruding endoporus minimum dimension is greater than the diameter of return opening.
The projection at in-oil cylinder return opening place is an annular ring, and the inwall of this annular ring and oil cylinder is connected as a single entity at the return opening place.
The endoporus of the projection at in-oil cylinder return opening place is positioned at the cylndrical surface in oil cylinder when bottom is fallen in in-oil cylinder position bottom than plunger the high 1～3cm of lowest point.
Gap between the column working of its inner side surface of in-oil cylinder projection and plunger is 0.3～0.4mm.
The filler opening of oil cylinder and return opening are a hydraulic fluid port.
The beneficial effects of the utility model are to compare with common hydraulic plunger formula oil cylinder, just many projectioies that play buffer function, cost is few, add man-hour, the working surface of projection is processed with the inwall working surface of oil cylinder, processing is simple, convenient, and good buffer effect can be avoided the collision of plunger and oil cylinder fully.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of oil cylinder among Fig. 1;
Fig. 3 is the worm's eye view of Fig. 2;
Fig. 4 is the structural representation of plunger among Fig. 1;
Fig. 5 is the structural representation of flange among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Referring to Fig. 1,2,3,4,5, a kind of cylinder buffer device, comprise oil cylinder 1, plunger 2, flange 3 and Sealing 4, filler opening and return opening 1-1 are arranged at oil cylinder 1 bottom, between oil cylinder 1 and the plunger 2 Sealing 4 is arranged, the plane of flange 3 (3-1) is pressed in Sealing 4 upsides at the 1-2 place, hole that is loaded on oil cylinder 1 top, and be connected as a single entity with oil cylinder 1, the return opening 1-1 of oil cylinder 1 and the inner circle wall intersection of oil cylinder 1 have one around return opening 1-1 and the endoporus minimum dimension protruding 1-3 more than or equal to return opening 1-1 diameter, and be gapped between the inner side surface of this projection 1-3 and the column working 2-1 of plunger 2.
The protruding 1-3 at the return opening 1-1 place in the described oil cylinder 1 is a ring-like projection around the sealing of return opening 1-1, and this protruding endoporus minimum dimension is greater than the diameter of return opening 1-1.
In order to save material, the protruding 1-3 at the return opening 1-1 place in the described oil cylinder 1 can be an annular ring, and the inwall of this annular ring and oil cylinder 1 is connected as a single entity with the mode of welding at return opening 1-1 place.Also can otherwise connect.
High 1～the 3cm of lowest point 2-2 of cylndrical surface 2-1 when oil cylinder 1 bottom is fallen than plunger 2 in the position bottom that the endoporus of the protruding 1-3 at the return opening 1-1 place in the described oil cylinder 1 is positioned at oil cylinder 1.Just make the cylndrical surface 2-1 of plunger can close the return opening 1-1 of oil cylinder 1 fully, this moment, the rate of descent of plunger approached zero, had avoided the collision of plunger and oil cylinder fully.
Can slow down in order to make plunger drop to protruding 1-3 place, need to increase the oil return resistance, the gap between its inner side surface of protruding 1-3 in the therefore described oil cylinder 1 and the column working 2-1 of plunger 2 is 0.3～0.4mm.
The filler opening of described oil cylinder 1 and return opening 1-1 are a hydraulic fluid port.
The utility model in use, owing to only in described oil cylinder 1, increased a protruding 1-3, gapped requirement between the circular working surface 2-1 of its inner side surface and plunger 2, during work, when plunger 2 falls at a high speed from top to bottom, fluid is from the quick oil sump tank of return opening 1-1, when plunger 2 drops to protruding 1-3 position, because effect around the protruding 1-3 of return opening 1-1, the gap reduces between oil cylinder 1 and the embolism 2, and plunger 2 continues to descend, and will close return opening gradually, make the oil return resistance increasing, plunger 2 rate of descent are more and more slower, and when plunger 2 declines were close to the end, return opening 1-1 closed fully, its rate of descent has approached zero, has avoided the collision of plunger 2 and oil cylinder 1 fully.
The utility model is simple in structure, and is easy to process.Guaranteed simultaneously cushioning effect again.
Claims (6)
1, a kind of cylinder buffer device, comprise oil cylinder (1), plunger (2), flange (3) and Sealing (4), filler opening and return opening (1-1) are arranged at oil cylinder (1) bottom, between oil cylinder (1) and the plunger (2) Sealing (4) is arranged, the plane (3-1) of flange (3) is pressed in Sealing (4) upside that the hole (1-2) that is loaded on oil cylinder (1) top is located, and be connected as a single entity with oil cylinder (1), it is characterized in that:
The return opening (1-1) of oil cylinder (1) and the inner circle wall intersection of oil cylinder (1) have one around return opening (1-1) and the endoporus minimum dimension projection (1-3) more than or equal to return opening (1-1) diameter, and be gapped between the column working (2-1) of inner side surface of this projection (1-3) and plunger (2).
2, cylinder buffer device according to claim 1, it is characterized in that: the projection (1-3) that the return opening (1-1) in the oil cylinder (1) is located is a ring-like projection around the sealing of return opening (1-1), and this protruding endoporus minimum dimension is greater than the diameter of return opening (1-1).
3, cylinder buffer device according to claim 1 and 2 is characterized in that: the projection (1-3) that the return opening (1-1) in the oil cylinder (1) is located is an annular ring, and the inwall of this annular ring and oil cylinder (1) is located to be connected as a single entity at return opening (1-1).
4, cylinder buffer device according to claim 1 is characterized in that: the high 1～3cm of lowest point (2-2) of the cylndrical surface (2-1) the when position bottom that the endoporus of the projection (1-3) that the return opening (1-1) in the oil cylinder (1) is located is positioned at oil cylinder (1) is fallen bottom the oil cylinder (1) than plunger (2).
5, cylinder buffer device according to claim 1 is characterized in that: the gap between its inner side surface of projection (1-3) in the oil cylinder (1) and the column working (2-1) of plunger (2) is 0.3～0.4mm.
6, cylinder buffer device according to claim 1 is characterized in that: the filler opening of oil cylinder (1) and return opening (1-1) are a hydraulic fluid port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200417091U CN201125902Y (en) | 2007-11-26 | 2007-11-26 | Oil cylinder buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200417091U CN201125902Y (en) | 2007-11-26 | 2007-11-26 | Oil cylinder buffering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125902Y true CN201125902Y (en) | 2008-10-01 |
Family
ID=39999371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200417091U Expired - Fee Related CN201125902Y (en) | 2007-11-26 | 2007-11-26 | Oil cylinder buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125902Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435291A (en) * | 2011-09-09 | 2012-05-02 | 郑州恒科实业有限公司 | Hydraulic plunger auto-compensation spacing device |
-
2007
- 2007-11-26 CN CNU2007200417091U patent/CN201125902Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435291A (en) * | 2011-09-09 | 2012-05-02 | 郑州恒科实业有限公司 | Hydraulic plunger auto-compensation spacing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202175486U (en) | Hydraulic buffer of gas reset throttling hole for elevator | |
| JP5323566B2 (en) | Hydraulic cylinder | |
| CN103090070A (en) | Piloted type pressure reducing valve | |
| CN203685765U (en) | Oil cylinder buffering structure | |
| CN201125902Y (en) | Oil cylinder buffering device | |
| US10472797B2 (en) | Two step hydraulic breaker with automatic stroke adjustment | |
| CN203394921U (en) | Plunger hydraulic cylinder | |
| CN100482955C (en) | 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom | |
| CN2835699Y (en) | Hydro-pneumatic buffer | |
| JP2013001481A (en) | Oil-filled buffer of elevator | |
| EP0949423A1 (en) | Hydraulic cylinder | |
| US9809431B2 (en) | Oil return mechanism | |
| CN204878500U (en) | Hydraulic absorber of multistage damping throttle | |
| CN202391863U (en) | Mechanical throttling and buffering structure used for hydraulic cylinder | |
| CN205578404U (en) | Hydraulic cylinder with high shock -absorbing capacity | |
| JP2010242803A (en) | Hydraulic cylinder | |
| CN202579453U (en) | Buffer device for hydraulic oil cylinder | |
| CN204492738U (en) | The anti-top spray device of a kind of oil well | |
| CN201401390Y (en) | Hydrocylinder buffering device | |
| CN108044982B (en) | A kind of pressure protective device | |
| EP3095752B1 (en) | Oil returning structure | |
| CN206886622U (en) | Fork truck lifting oil cylinder with New Buffering structure | |
| CN110259763A (en) | Cylinder cushion device | |
| CN201771889U (en) | Novel hydraulic cylinder with variable throttling buffer structure | |
| CN2521198Y (en) | Plunger damping hydraulic oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20161126 |