CN202867419U - Hydraulic cylinder buffering structure - Google Patents
Hydraulic cylinder buffering structure Download PDFInfo
- Publication number
- CN202867419U CN202867419U CN 201220549446 CN201220549446U CN202867419U CN 202867419 U CN202867419 U CN 202867419U CN 201220549446 CN201220549446 CN 201220549446 CN 201220549446 U CN201220549446 U CN 201220549446U CN 202867419 U CN202867419 U CN 202867419U
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- piston
- way valve
- cylinder
- cavity
- 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
- 230000003139 buffering effect Effects 0.000 title claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a hydraulic cylinder buffering structure. The buffering structure comprises a one-way valve. A threaded hole leading to the air is arranged in the top of the side wall of a cylinder body, a cavity for installation of the one-way valve is arranged along the center line direction of the cylinder body, the cavity is communicated with a rodless cavity of a hydraulic cylinder, the one-way valve blocks a small hole leading to the threaded hole, a convex block is arranged on a rodless straight end face of a piston, and a round end face of the rodless end of the piston has a slope which is an axial throttling groove. When the piston is at the threaded hole, due to the design of the axial throttling groove, hydraulic oil flows out along the slope from the threaded hole; and due to the design of the slope, amount of the hydraulic oil flowing out is gradually reduced, and resistance is thereby formed. The hydraulic cylinder buffering structure is an improved structure of an existing hydraulic cylinder, and can produce large resistance to the piston due to the design of the axial throttling groove, and buffering is achieved.
Description
Technical field
The utility model relates to a kind of buffering structure of hydraulic cylinder.
Technical background
Existing buffering structure of hydraulic cylinder is generally in the hydraulic cylinder body bottom and has a small ventilating holes, in hydraulic cylinder piston moves back and forth process, this air hole is because the aperture is very little, the generation resistance that moves back and forth to piston, this structure is a kind of structure of the most generally using, but because this air hole turnover gas direction is identical with the piston movement direction, the resistance effect of generation is limited, and is therefore good not for the resistance effect of oil hydraulic cylinder.Now be badly in need of a kind of improvement structure, can improve this situation.
The model utility content
For realizing the above, the technological scheme that the utility model provides is as follows: a kind of buffering structure of hydraulic cylinder, and described oil hydraulic cylinder has cylinder body and piston, and described buffer structure comprises one-way valve,
Described cylinder side wall top has the tapped hole that leads to atmosphere, is provided with the cavity that one-way valve is installed along the cylinder center line direction, and this cavity communicates with the oil hydraulic cylinder rodless cavity;
The valve of this one-way valve is blocked the aperture that leads to tapped hole;
Described piston is provided with projection without the straight end of bar; Piston rear end nose circle mask has domatic, and this is domatic to be axial throttling groove;
When piston is in the tapped hole place, because the axially design of throttling groove, hydraulic oil domaticly flows out from tapped hole along this, because slope design, the discharge of hydraulic oil reduces gradually, thereby forms resistance.
Further, the spring top of described one-way valve is on the cylinder cap of oil hydraulic cylinder.
This buffering structure of hydraulic cylinder that the utility model relates to is the improvement structure of existing oil hydraulic cylinder, and the axially design of throttling groove can produce larger resistance to piston, realizes buffering.
Description of drawings
Fig. 1 is the utility model buffering structure of hydraulic cylinder structural drawing;
The 1-cylinder body; The 2-piston; The 3-tapped hole; The 4-individual event valve; The 6-projection; The 7-cylinder cap.
Embodiment
As shown in Figure 1, described oil hydraulic cylinder has cylinder body 1 and piston 2, and described buffer structure comprises one-way valve 4.
Described cylinder body 1 top side wall has the tapped hole 3 that leads to atmosphere, is provided with the cavity that one-way valve 4 is installed along the cylinder center line direction, and this cavity communicates with the oil hydraulic cylinder rodless cavity;
The valve of this one-way valve 4 is blocked the aperture that leads to tapped hole 3;
Described piston 2 is provided with projection 6 without the straight end of bar; Piston 2 rear end nose circle masks have domatic, and this is domatic to be axial throttling groove;
When piston 2 is in tapped hole 3 places, because the axially design of throttling groove, hydraulic oil domaticly flows out from tapped hole 3 along this, because slope design, the discharge of hydraulic oil reduces gradually, thereby forms resistance.
The spring top of one-way valve 4 is on the cylinder cap 7 of oil hydraulic cylinder.
The sort buffer structure that the utility model relates to, simple in structure, can play comfort cushioning power to piston, reduce the noise in the hydraulic cylinder works process.
Embodiment described in the utility model does not consist of the restriction to the application's scope; every within the spirit and principle of the utility model design, any modification that one of skill in the art can make, be equal to and replace and improvement etc. all should be included within the protection domain of the present utility model.
Claims (2)
1. buffering structure of hydraulic cylinder, described oil hydraulic cylinder has cylinder body and piston, it is characterized in that, and described buffer structure comprises one-way valve,
Described cylinder side wall top has the tapped hole that leads to atmosphere, is provided with the cavity that one-way valve is installed along the cylinder center line direction, and this cavity communicates with the oil hydraulic cylinder rodless cavity;
The valve of this one-way valve is blocked the aperture that leads to tapped hole;
Described piston is provided with projection without the straight end of bar; Piston rear end nose circle mask has domatic, and this is domatic to be axial throttling groove;
When piston is in the tapped hole place, because the axially design of throttling groove, hydraulic oil domaticly flows out from tapped hole along this, because slope design, the discharge of hydraulic oil reduces gradually, thereby forms resistance.
2. buffering structure of hydraulic cylinder according to claim 1 is characterized in that, the spring top of described one-way valve is on the cylinder cap of oil hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549446 CN202867419U (en) | 2012-10-25 | 2012-10-25 | Hydraulic cylinder buffering structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549446 CN202867419U (en) | 2012-10-25 | 2012-10-25 | Hydraulic cylinder buffering structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867419U true CN202867419U (en) | 2013-04-10 |
Family
ID=48034142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220549446 Expired - Fee Related CN202867419U (en) | 2012-10-25 | 2012-10-25 | Hydraulic cylinder buffering structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033449A (en) * | 2014-05-13 | 2014-09-10 | 江苏航天水力设备有限公司 | Servomotor capable of being slowly stopped and smoothly started |
-
2012
- 2012-10-25 CN CN 201220549446 patent/CN202867419U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033449A (en) * | 2014-05-13 | 2014-09-10 | 江苏航天水力设备有限公司 | Servomotor capable of being slowly stopped and smoothly started |
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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: 20130410 Termination date: 20131025 |