CN201671904U - Oil cylinder specially used for short-stroke hollow piston rod type steel tube cold-drawing machine - Google Patents
Oil cylinder specially used for short-stroke hollow piston rod type steel tube cold-drawing machine Download PDFInfo
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- CN201671904U CN201671904U CN2010201406999U CN201020140699U CN201671904U CN 201671904 U CN201671904 U CN 201671904U CN 2010201406999 U CN2010201406999 U CN 2010201406999U CN 201020140699 U CN201020140699 U CN 201020140699U CN 201671904 U CN201671904 U CN 201671904U
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- drawing machine
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Abstract
The utility model discloses an oil cylinder specially used for a short-stroke hollow piston rod type steel tube cold-drawing machine, which mainly comprises a cylinder body, a piston and a piston rod. The piston is movably arranged in the cylinder body and divides the cylinder body into two cavities. The two cavities are respectively provided with an oil filling opening and an oil return opening. The piston is connected with the piston rod. The piston rod is a hollow structure. Both the two ends of the piston rod extend out of the cylinder. Due to the hollow structure of the piston rod, the pull rod of the cold-drawing machine is arranged in the piston rod and passes through the whole oil cylinder, and the piston and the piston rod freely move back and forth. The oil cylinder specially used for the short-stroke hollow piston rod type steel tube cold-drawing machine is simple in structure and can meet the production requirement of the cold-drawing machine. The total length of the pull rod is greatly increased, the length of the finished steel tube is extended and the production cost is effectively controlled.
Description
Technical field
The utility model relates to a kind of hydraulic jack, especially a kind of short stroke hollow piston rod-type steel pipe drawbench special-purpose hydraulic cylinder.
Background technique
In the manufacturing enterprise of present stainless steel seamless pipe, hydraulic type steel pipe drawbench is a large amount of has substituted old-fashioned chain drawing machine.And the main drive of hydraulic type steel pipe drawbench drawing is provided by hydraulic jack, and hydraulic jack has that driving force is strong, driving force is stablized, be easy to characteristics such as control, can effectively satisfy the production requirement of drawbench.Yet existing hydraulic type steel pipe drawbench is also because of being subjected to the travel limits of hydraulic jack, makes the length of fished pipe mostly below 12 meters.And the price of drawbench straight line rising with the length of oil cylinder.Price as the oil cylinder of one 300 tons/2 meters strokes is about 60,000 yuan, and the oil cylinder of one 300 tons/12 meters strokes will reach ten thousand yuan of 70-80, in order to increase the length of fished pipe, prior art can only be used the long oil cylinder of stroke, and this has increased enterprise's cost of production greatly.And our company finds after deliberation, the steel pipe of on the steel pipe drawbench, producing, and its fished pipe length increase also can realize by the to-and-fro motion or the knockdown cylinder structure of oil cylinder piston.But existing hydraulic cylinder piston of using on drawbench and piston rod all are solid construction, when piston rod is gone to the stroke lowest limit, because the existence of pull bar, piston and piston rod just can not realize replying action, this drawbacks limit the total kilometres of pull bar, the length that increase fished pipe can only adopt the long oil cylinder of stroke.
Summary of the invention
The purpose of this utility model is the short stroke hollow piston rod-type steel pipe drawbench special-purpose hydraulic cylinder that a kind of pull bar total length that provides for the deficiency that solves above-mentioned technology and total kilometres can not be subjected to the oil cylinder stroke restriction.
In order to achieve the above object, the short stroke hollow piston rod-type steel pipe drawbench special-purpose hydraulic cylinder that the utility model is designed, it mainly comprises cylinder body, piston and piston rod, piston is removably set in the cylinder body and with cylinder body and is divided into two chambers, be respectively equipped with pouring orifice and return opening on two chambers, piston is connected with piston rod, be that described piston rod is a hollow structure, and the two ends of this piston rod all extend out to outside the cylinder body, because the hollow structure of piston rod, make the pull bar of drawbench to be arranged in the piston rod, and pass whole cylinder, piston and piston rod can easily be realized to-and-fro motion.
As preferably, be provided with the pull bar of cold group of machine of steel pipe in the hollow structure of described piston rod.
The short stroke hollow piston rod-type steel pipe drawbench special-purpose hydraulic cylinder that the utility model obtains, simple in structure, can satisfy the production requirement of drawbench, because the hollow structure of piston rod, make the pull bar of drawbench can be arranged in the piston rod, and pass whole cylinder, piston and piston rod can easily be realized to-and-fro motion, in addition because pull bar can pass oil cylinder, thereby also can adopt the knockdown Hubbing method of a plurality of oil cylinders, arrange before and after a plurality of oil cylinders, the timesharing effect, thus the total kilometres of pull bar can be increased greatly, increase the length of fished pipe, and effectively controlled cost of production.
Description of drawings
Fig. 1 is embodiment 1 a structural representation.
Among the figure: cylinder body 1, piston 2, piston rod 3, pouring orifice 4, return opening 5, pull bar 6.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1
As shown in Figure 1, the described short stroke hollow piston of present embodiment rod-type steel pipe drawbench special-purpose hydraulic cylinder, it mainly comprises cylinder body 1, piston 2 and piston rod 3, piston 2 is removably set in the cylinder body 1 and with cylinder body 1 and is divided into two chambers, be respectively equipped with pouring orifice 4 and return opening 5 on two chambers, piston 2 is connected with piston rod 3, be that piston rod 3 is hollow structure, and the two ends of this piston rod 3 all extend out to outside the cylinder body 1, because the hollow structure of piston rod 3 makes the pull bar 6 of drawbench can be arranged in the piston rod 3, and passes whole cylinder, piston 2 and piston rod 3 can easily be realized to-and-fro motion, are provided with the pull bar 6 of cold group of machine of steel pipe in the hollow structure of piston rod 3.
The described short stroke hollow piston of present embodiment rod-type steel pipe drawbench special-purpose hydraulic cylinder, simple in structure, can satisfy the production requirement of drawbench, because the hollow structure of piston rod 3, make the pull bar 6 of drawbench can be arranged in the piston rod 3, and pass whole cylinder, piston 2 and piston rod 3 can easily be realized to-and-fro motion, in addition because pull bar 6 can pass oil cylinder, thereby also can adopt the knockdown Hubbing method of a plurality of oil cylinders, arrange before and after a plurality of oil cylinders, the timesharing effect, thus the total kilometres of pull bar 6 can be increased greatly, increase the length of fished pipe, and effectively controlled cost of production.
Claims (2)
1. cold group of machine special-purpose hydraulic cylinder of a short stroke hollow piston rod-type steel pipe, it mainly comprises cylinder body (1), piston (2) and piston rod (3), piston (2) is removably set in the cylinder body (1) and with cylinder body (1) and is divided into two chambers, be respectively equipped with pouring orifice (4) and return opening (5) on two chambers, piston (2) is connected with piston rod (3), it is characterized in that described piston rod (3) is a hollow structure, and the two ends of this piston rod (3) extend out to all outside the cylinder body (1).
2. cold group of machine special-purpose hydraulic cylinder of short stroke hollow piston rod-type steel pipe according to claim 1 is characterized in that being provided with in the hollow structure of described piston rod (3) pull bar (6) of cold group of machine of steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201406999U CN201671904U (en) | 2010-03-25 | 2010-03-25 | Oil cylinder specially used for short-stroke hollow piston rod type steel tube cold-drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201406999U CN201671904U (en) | 2010-03-25 | 2010-03-25 | Oil cylinder specially used for short-stroke hollow piston rod type steel tube cold-drawing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671904U true CN201671904U (en) | 2010-12-15 |
Family
ID=43329316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201406999U Expired - Fee Related CN201671904U (en) | 2010-03-25 | 2010-03-25 | Oil cylinder specially used for short-stroke hollow piston rod type steel tube cold-drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201671904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840190A (en) * | 2012-09-21 | 2012-12-26 | 铁煤集体企业联合发展有限公司 | Air cylinder special for preventing from clamping persons for underground air door of coal mine |
| CN103352893A (en) * | 2013-06-25 | 2013-10-16 | 洛阳德平机械设备有限公司 | Tension mechanism power system adopting hollow structure of internal welding machine and working method |
-
2010
- 2010-03-25 CN CN2010201406999U patent/CN201671904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840190A (en) * | 2012-09-21 | 2012-12-26 | 铁煤集体企业联合发展有限公司 | Air cylinder special for preventing from clamping persons for underground air door of coal mine |
| CN102840190B (en) * | 2012-09-21 | 2014-09-24 | 铁煤集体企业联合发展有限公司 | Air cylinder special for preventing from clamping persons for underground air door of coal mine |
| CN103352893A (en) * | 2013-06-25 | 2013-10-16 | 洛阳德平机械设备有限公司 | Tension mechanism power system adopting hollow structure of internal welding machine and working method |
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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: 20101215 Termination date: 20140325 |