CN201443546U - Piston-type hydraulic cylinder - Google Patents
Piston-type hydraulic cylinder Download PDFInfo
- Publication number
- CN201443546U CN201443546U CN2009200313316U CN200920031331U CN201443546U CN 201443546 U CN201443546 U CN 201443546U CN 2009200313316 U CN2009200313316 U CN 2009200313316U CN 200920031331 U CN200920031331 U CN 200920031331U CN 201443546 U CN201443546 U CN 201443546U
- Authority
- CN
- China
- Prior art keywords
- piston
- hydraulic cylinder
- valve rod
- type hydraulic
- valve stem
- 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
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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Abstract
The utility model discloses a piston-type hydraulic cylinder, which belongs to a hydraulic device and overcomes shortages that a hydraulic cylinder in the prior art is easy to cause a stud bolt of a cylinder cover to be cracked during a working process. The piston-type hydraulic cylinder mainly comprises a cylinder body, a piston and a piston rod, and an automatic resetting limiting device which is arranged on the piston-type hydraulic cylinder comprises a valve stem, a spring, a spring base, a cylindrical pin, a valve stem hole and an oil hole, wherein the valve stem hole and the oil hole are arranged on the piston, and the valve stem is arranged inside the valve stem hole. The piston-type hydraulic cylinder is mainly used for a dumper lorry, and can be also used for other occasions needing the piston-type hydraulic cylinder.
Description
Technical field
The utility model belongs to a kind of hydraulic pressure installation, specifically, relates in particular to a kind of piston-type hydraulic cylinder.
Background technique
In dumping car was tumbled the compartment process, along with the upward stroke of piston shortens gradually, piston and cylinder cap distance reduced, and when stroke stopped, piston contact with cylinder cap, only depended on the cylinder cap limited piston to move and caused cylinder head bolts to rupture easily; Strengthen the increase of cylinder cap integral installation space if increase bolt, the sound that the oil hydraulic cylinder inner body has bump can occur again.At present, also there is not a kind of piston-type hydraulic cylinder that can avoid piston to contact or clash into cylinder cap.
Summary of the invention
For solve in the prior art oil hydraulic cylinder in the course of the work piston and cylinder cap come in contact easily or clash into, thereby cause the defective of cylinder head bolts fracture, the utility model provides a kind of piston-type hydraulic cylinder.
The utility model is achieved through the following technical solutions:
A kind of piston-type hydraulic cylinder, it comprises cylinder body, piston and piston rod, described piston-type hydraulic cylinder is provided with the limit stoper that automatically resets, and the limit stoper that automatically resets comprises valve rod, spring, spring seat, straight pin and be located at valve rod hole, oilhole on the piston that valve rod is installed in the valve rod hole.
The head of valve rod preferably is provided with sealing cone, preferably is provided with the sealing chamfering on the valve rod hole; Can be provided with two oilholes on the piston.
Compared with prior art, the beneficial effects of the utility model are: utilize the conical surface and valve rod hole chamfering fitted seal on the valve rod, avoided the problem of oil hydraulic cylinder internal leakage, thereby guaranteed that oil hydraulic cylinder operates steadily; When piston motion when stroke stops, valve rod on the piston begins retraction at the effect lower valve rod of upper end cylinder cap, the valve rod conical surface leaves piston and no longer seals, reach two oilholes that communicate with valve rod hole by valve rod hole, cause upper and lower two chambeies of hydraulic pressure cavity to communicate, thereby the piston stop motion has guaranteed that piston and cylinder cap can not clash into.By spring action, valve rod automatically reset when oil hydraulic cylinder fell after rise, had avoided the mutual bump of component in the oil hydraulic cylinder.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the limit stoper that automatically resets of the present utility model;
Fig. 3 is the working state schematic representation of the limit stoper that automatically resets of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
1, piston; 2, valve rod; 3, spring; 4, spring seat; 5, straight pin; 6, piston rod; 7, cylinder cap; 8, a kind of piston-type hydraulic cylinder of oilhole, it comprises cylinder body, piston 1 and piston rod 6 and the limit stoper that automatically resets, the limit stoper that automatically resets comprises valve rod 2, spring 3, spring seat 4, straight pin 5 and is located at valve rod hole, oilhole 8 on the piston; The head of valve rod 2 is provided with sealing cone, and valve rod hole is provided with the sealing chamfering; Piston 1 is provided with two oilholes 8.
Claims (2)
1. piston-type hydraulic cylinder, it comprises cylinder body, piston and piston rod, it is characterized in that: described piston-type hydraulic cylinder is provided with the limit stoper that automatically resets, the limit stoper that automatically resets comprises valve rod, spring, spring seat, straight pin and is located at valve rod hole, oilhole on the piston that valve rod is installed in the valve rod hole.
2 piston-type hydraulic cylinders according to claim 1 is characterized in that: the head of valve rod is provided with sealing cone, and valve rod hole is provided with the sealing chamfering.
3. piston-type hydraulic cylinder according to claim 1 and 2 is characterized in that: piston is provided with two oilholes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200313316U CN201443546U (en) | 2009-08-07 | 2009-08-07 | Piston-type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200313316U CN201443546U (en) | 2009-08-07 | 2009-08-07 | Piston-type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443546U true CN201443546U (en) | 2010-04-28 |
Family
ID=42548223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200313316U Expired - Fee Related CN201443546U (en) | 2009-08-07 | 2009-08-07 | Piston-type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443546U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893015A (en) * | 2010-07-22 | 2010-11-24 | 烟台未来自动装备有限责任公司 | Hydraulic cylinder with hydraulic on and off function for dump sanitation truck |
| CN102588384A (en) * | 2012-03-08 | 2012-07-18 | 柳州双吉机械有限公司 | Single-acting hydrocylinder piston unloading device |
| CN103821792A (en) * | 2014-03-14 | 2014-05-28 | 汤海涛 | Stable hydraulic cylinder |
-
2009
- 2009-08-07 CN CN2009200313316U patent/CN201443546U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893015A (en) * | 2010-07-22 | 2010-11-24 | 烟台未来自动装备有限责任公司 | Hydraulic cylinder with hydraulic on and off function for dump sanitation truck |
| CN102588384A (en) * | 2012-03-08 | 2012-07-18 | 柳州双吉机械有限公司 | Single-acting hydrocylinder piston unloading device |
| CN103821792A (en) * | 2014-03-14 | 2014-05-28 | 汤海涛 | Stable hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Zhongli Hydraulic Technology Co., Ltd. Assignor: Qin Hongming Contract record no.: 2011370000575 Denomination of utility model: Double-acting piston cylinder Granted publication date: 20100428 License type: Exclusive License Record date: 20111226 |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG ZHONGLI HYDRAULIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: QIN HONGMING Effective date: 20120417 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120417 Address after: 276400 Shandong city of Linyi province Yishui County Chengdong Middle Ring Road Patentee after: Shandong Zhongli Hydraulic Technology Co., Ltd. Address before: 276400 Shandong city of Linyi province Yishui County Chengdong Middle Ring Road Patentee before: Qin Hongming |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20120807 |