CN203685765U - Oil cylinder buffering structure - Google Patents
Oil cylinder buffering structure Download PDFInfo
- Publication number
- CN203685765U CN203685765U CN201320772965.3U CN201320772965U CN203685765U CN 203685765 U CN203685765 U CN 203685765U CN 201320772965 U CN201320772965 U CN 201320772965U CN 203685765 U CN203685765 U CN 203685765U
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- Prior art keywords
- cylinder
- buffering
- throttling
- throttling groove
- cushion collar
- 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 - Lifetime
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- 230000003139 buffering effect Effects 0.000 title abstract description 27
- 239000012530 fluid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses an oil cylinder buffering structure which comprises a cylinder barrel, a cylinder cover arranged on the end part of the cylinder barrel, a piston arranged in the cylinder barrel and a piston rod, wherein an oil opening is formed in the cylinder cover; the oil cylinder buffering structure further comprises a baffle, a return spring, a buffering sleeve, a throttling slot, a boss and a throttling hole; the buffering sleeve is mounted on the piston rod; the throttling slot is formed in the buffering sleeve and is communicated with the oil opening and a rod cavity; the throttling slot is divergent in the extending direction of the piston rod; the baffle is mounted on the buffering sleeve and is positioned at the throttling slot of the buffering sleeve through the return spring; a throttling opening is formed between the baffle and the throttling slot; a buffering slot is formed in the cylinder cover and consists of two stages; the inner diameter of the first stage is greater than the maximum diameter of the baffle; the inner diameter of the second stage is slightly greater than the diameter of the left end of the buffering sleeve; the throttling hole is formed in the cylinder cover between the two stages of the buffering slot and is communicated with the oil opening; the boss is arranged between the two stages of the buffering slot. The whole buffering process of the oil cylinder buffering structure is steady, reliable, low in noise and low in vibration; furthermore, the processing cost is lowered, and the reliability of the oil cylinder buffering is improved.
Description
Technical field
The utility model relates to a kind of hydraulic jack, specifically a kind of cylinder buffer structure.
Background technique
For preventing oil cylinder in the course of the work, when stretching out completely, piston rod produces larger impact between the end face of piston and cylinder cap, damage cylinder structure, produce larger noise and vibration, the cylinder rod chamber of being everlasting is provided with buffer structure.But existing cylinder buffer structure is mainly to design a cylindrical or conical buffer plunger in one end of piston, design one cylindrical or conical cushion hole with matching in cylinder cap, forms buffering by the gap throttling between buffer plunger and cushion hole.The buffer gap of sort buffer structure is less, and buffer plunger and cushion hole have again relative separation motion, and all high especially thereby the cooperation to buffer plunger and cushion hole, coaxality require, processing and the assembling difficulty of each component are larger.
Summary of the invention
The problem existing for above-mentioned prior art, the utility model provides a kind of cylinder buffer structure, and it is simple in structure, easily manufactured, and can guarantee effective buffering and the noise reduction of oil cylinder.
To achieve these goals, a kind of cylinder buffer structure of the utility model, comprises cylinder barrel, and the cylinder cap of cylinder barrel end, is arranged on piston and piston rod in cylinder barrel, and cylinder cap is provided with hydraulic fluid port; Also comprise baffle plate, Returnning spring, cushion collar, throttling groove, convex and throttle orifice; Described cushion collar is installed on piston rod, has throttling groove on cushion collar, and throttling groove is communicated with hydraulic fluid port and rod chamber, and it is gradually expanding shape that throttling groove stretches out direction along piston rod; Described baffle plate is arranged on cushion collar, and is placed in the throttling groove place of cushion collar by Returnning spring, between baffle plate and throttling groove, forms restriction; On described cylinder cap, have dashpot, dashpot is divided into two-stage, and first order internal diameter is slightly larger than baffle plate maximum diameter, second level internal diameter is slightly larger than cushion collar left end diameter, on cylinder cap between two-stage dashpot, have throttle orifice, throttle orifice is communicated with hydraulic fluid port, between two-stage dashpot, is provided with convex.
Further, throttling groove is two inclined-planes and the plane being mutually connected, and plane is foremost, and the surface slope of adjacent plane is greater than another inclined-plane.
Further, baffle plate and Returnning spring abutting end chamfering.
Compared with prior art first order restriction of the present utility model is settable orifice, restriction is along with the carrying out of buffering, descending, make stable buffering transition, after first order buffering finishes, the constant throttle orifice throttling buffering in the second level, until oil cylinder stop motion, whole buffering course is steadily, reliable, noise is little, a little less than vibration; And the cooperation between the associated components of this damping device is Spielpassung, processing and coaxality and the quality of fit installed are all had to certain reduction, reduce processing cost and increased the reliability of cylinder buffer.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model cushion collar and throttling groove plan view.
In figure, 1, cylinder cap; 2, cylinder barrel; 3, baffle plate; 4, Returnning spring; 5, cushion collar; 6, piston; 7, throttling groove; 8, convex; 9, throttle orifice; 10, hydraulic fluid port; 11, piston rod.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model cylinder buffer structure, comprises cylinder barrel 2, and the cylinder cap 1 of cylinder barrel 2 ends is arranged on piston 6 and piston rod 11 in cylinder barrel 2, and cylinder cap 1 is provided with hydraulic fluid port 10; Also comprise baffle plate 3, Returnning spring 4, cushion collar 5, throttling groove 7, convex 8 and throttle orifice 9; Described cushion collar 5 is installed on piston rod 11, has throttling groove 7 on cushion collar 5, and throttling groove 7 is communicated with hydraulic fluid port 10 and rod chamber, and it is gradually expanding shape that throttling groove 7 stretches out direction along piston rod 11; Described baffle plate 3 is arranged on cushion collar 5, and is placed in throttling groove 7 places of cushion collar 5 by Returnning spring 4; On described cylinder cap 1, have dashpot, dashpot is divided into two-stage, and first order internal diameter is slightly larger than baffle plate 3 maximum diameters, second level internal diameter is slightly larger than cushion collar left end diameter, on cylinder cap 1 between two-stage dashpot, have throttle orifice 9, throttle orifice 9 is communicated with hydraulic fluid port 10, is provided with convex 8 between two-stage dashpot.
As shown in Figure 2, further improve as the utility model, throttling groove 7 is two inclined-planes and the plane being mutually connected, and plane is foremost, and the surface slope of adjacent plane is greater than another inclined-plane.
Further improve as the utility model, baffle plate 3 and Returnning spring 4 abutting end chamferings, do not interfere with spring when it is slided on cushion collar 5.
This buffer structure work engineering is as follows: along with the movement of piston 6, be installed on the cushion collar 5 on piston rod 11, baffle plate 3, spring 4 is motion together thereupon, when baffle plate 3 enters the first order dashpot of cylinder cap 1 with piston rod 11, enter the first order buffering of buffer structure, fluid in cylinder barrel 2 rod chambers is from the gap between baffle plate 3 and cylinder cap 1, between baffle plate 3 and throttling groove 7, the restriction of formation flows to cylinder cap 1 and flows out from hydraulic fluid port 10, along with the further motion of piston 6, baffle plate 3 stops at convex 8, cushion collar 5 enters cylinder cap 1 second level dashpot, now cushion collar 5 and baffle plate 3 relative movement, between baffle plate 3 and throttling groove 7, the restriction of formation diminishes gradually, form gradual change restriction, in rod chamber, fluid passes through restriction, throttle orifice 9 flows to cylinder cap 1 and flows out from hydraulic fluid port 10, and restriction is along with the motion of piston 6 reduces gradually, damping increases gradually, buffering strengthens, along with the motion of oil cylinder, when the restriction forming when throttling groove 7 is reduced into 0, first order buffering finishes, now enter second level buffering, the fluid in rod chamber only enters cylinder cap 1 from throttle orifice 9, flows out from hydraulic fluid port 10, until oil cylinder stop motion, whole buffering course finishes.
Claims (3)
1. a cylinder buffer structure, comprises cylinder barrel (2), and the cylinder cap (1) of cylinder barrel (2) end is arranged on piston (6) and piston rod (11) in cylinder barrel (2), and cylinder cap (1) is provided with hydraulic fluid port (10); It is characterized in that, also comprise baffle plate (3), Returnning spring (4), cushion collar (5), throttling groove (7), convex (8) and throttle orifice (9); It is upper that described cushion collar (5) is installed on piston rod (11), has throttling groove (7) on cushion collar (5), and throttling groove (7) is communicated with hydraulic fluid port (10) and rod chamber, and it is gradually expanding shape that throttling groove (7) stretches out direction along piston rod (11); It is upper that described baffle plate (3) is arranged on cushion collar (5), and locate by the throttling groove (7) that Returnning spring (4) is placed in cushion collar (5), between baffle plate (3) and throttling groove (7), forms restriction; Described cylinder cap has dashpot on (1), dashpot is divided into two-stage, first order internal diameter is slightly larger than baffle plate (3) maximum diameter, second level internal diameter is slightly larger than cushion collar left end diameter, on cylinder cap (1) between two-stage dashpot, have throttle orifice (9), throttle orifice (9) is communicated with hydraulic fluid port (10), is provided with convex (8) between two-stage dashpot.
2. a kind of cylinder buffer structure according to claim 1, is characterized in that, described throttling groove (7) is two inclined-planes and the plane being mutually connected, and plane is foremost, and the surface slope of adjacent plane is greater than another inclined-plane.
3. a kind of cylinder buffer structure according to claim 1 and 2, is characterized in that: described baffle plate (3) and Returnning spring (4) abutting end chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772965.3U CN203685765U (en) | 2013-11-28 | 2013-11-28 | Oil cylinder buffering structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772965.3U CN203685765U (en) | 2013-11-28 | 2013-11-28 | Oil cylinder buffering structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685765U true CN203685765U (en) | 2014-07-02 |
Family
ID=51007673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320772965.3U Expired - Lifetime CN203685765U (en) | 2013-11-28 | 2013-11-28 | Oil cylinder buffering structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685765U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121251A (en) * | 2014-07-17 | 2014-10-29 | 安徽易奇软件科技有限公司 | Buffering device for hydraulic cylinder |
| CN104121247A (en) * | 2014-07-16 | 2014-10-29 | 徐州徐工液压件有限公司 | Floating self-adjusting type combined buffering structure for hydraulic cylinder |
| CN106151160A (en) * | 2015-04-28 | 2016-11-23 | 徐工集团工程机械股份有限公司 | There is hydraulic jack and the excavator of pooling feature |
| CN106286471A (en) * | 2015-05-20 | 2017-01-04 | 徐工集团工程机械股份有限公司 | Guide buffer unit, hydraulic jack and excavator |
| CN112197793A (en) * | 2020-09-30 | 2021-01-08 | 四川新川航空仪器有限责任公司 | LVDT sensor |
| US11319972B1 (en) | 2021-05-11 | 2022-05-03 | Caterpillar Inc. | Hydraulic cylinder snubbing retention arrangement |
-
2013
- 2013-11-28 CN CN201320772965.3U patent/CN203685765U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121247A (en) * | 2014-07-16 | 2014-10-29 | 徐州徐工液压件有限公司 | Floating self-adjusting type combined buffering structure for hydraulic cylinder |
| CN104121251A (en) * | 2014-07-17 | 2014-10-29 | 安徽易奇软件科技有限公司 | Buffering device for hydraulic cylinder |
| CN106151160A (en) * | 2015-04-28 | 2016-11-23 | 徐工集团工程机械股份有限公司 | There is hydraulic jack and the excavator of pooling feature |
| CN106151160B (en) * | 2015-04-28 | 2018-05-01 | 徐工集团工程机械股份有限公司 | Hydraulic cylinder and excavator with pooling feature |
| CN106286471A (en) * | 2015-05-20 | 2017-01-04 | 徐工集团工程机械股份有限公司 | Guide buffer unit, hydraulic jack and excavator |
| CN112197793A (en) * | 2020-09-30 | 2021-01-08 | 四川新川航空仪器有限责任公司 | LVDT sensor |
| US11319972B1 (en) | 2021-05-11 | 2022-05-03 | Caterpillar Inc. | Hydraulic cylinder snubbing retention arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |