CN202579440U - Double-acting two-stage constant speed cylinder - Google Patents
Double-acting two-stage constant speed cylinder Download PDFInfo
- Publication number
- CN202579440U CN202579440U CN 201220218692 CN201220218692U CN202579440U CN 202579440 U CN202579440 U CN 202579440U CN 201220218692 CN201220218692 CN 201220218692 CN 201220218692 U CN201220218692 U CN 201220218692U CN 202579440 U CN202579440 U CN 202579440U
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- China
- Prior art keywords
- rod
- piston
- hole
- cylinder barrel
- rod assembly
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- Expired - Fee Related
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Abstract
The utility model provides a double-acting two-stage constant speed cylinder, and relates to the field of structure of cylinders. The double-acting two-stage constant speed cylinder comprises a cylinder body and a back end cover. A rod body assembly is arranged inside the cylinder body, the rod body assembly comprises a second piston rod and a second piston, and a first piston rod and a first piston are arranged inside the rod body assemble. A back oil port communicated with a second rodless cavity is arranged on the back end cover. An oil duct is axially arranged in the first piston rod, and the front end of the oil duct is provided with a front oil port. A first through hole is arranged in the first piston rod in a radial direction, and two ends of the first through hole are respectively communicated with the oil duct and a first rod cavity. A second through hole is axially arranged in the rod body assembly, and two ends of the second through hole are respectively communicated with a first rodless cavity and a second rod cavity. A third through hole communicated with the second rod cavity is arranged in the cylinder body, and a plug screw is connected with the cylinder body with the third through hole. When flow inputted through the back oil port or the front oil port is constant, the rod body assembly and the first piston rod stretch out and draw back simultaneously in a uniform speed; and through control of the oil inlet flow of the front oil port and the back oil port, control of extending speed of the rod body assembly and the first piston rod is achieved.
Description
Technical field
The utility model relates to the structure field of oil cylinder.
Background technique
The front and back hydraulic fluid port of existing twin-stage oil cylinder is separately positioned on the rear and front end of cylinder barrel, and the cylinder barrel inner structure is complicated, and the two-stage piston rod is different because of cylinder diameter, and the speed of stretching out is wayward and speed is inconsistent, and outside piston rod needs the oil duct of processed complex.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of existing technology, to provide a kind of stretching speed consistent double-action twin-stage constant speed oil cylinder.
The purpose of the utility model is achieved in that a kind of double-action twin-stage constant speed oil cylinder; Comprise cylinder barrel, the rear end disjunctor rear end cover of cylinder barrel is provided with body of rod assembly in the cylinder barrel; Body of rod assembly comprises second piston rod and second piston; Second piston is connected the rear end of second piston rod, is second rodless cavity between cylinder barrel, rear end cover and second piston, between the front end of cylinder barrel and the body of rod assembly second guide sleeve is set; Second guide sleeve is connected with cylinder barrel, is second rod chamber between cylinder barrel, second guide sleeve and the body of rod assembly; In the said body of rod assembly first piston bar and first piston are set; First piston is connected the rear end of first piston bar; Between the front end of body of rod assembly and the first piston bar first guide sleeve is set; First guide sleeve is connected with body of rod assembly, is first rodless cavity between first piston and the body of rod assembly, is first rod chamber between first guide sleeve, first piston bar, first piston and second piston rod; The back hydraulic fluid port that is connected with second rodless cavity is set on the said rear end cover, in the said first piston bar oil duct is set axially, the front end of oil duct is provided with preceding hydraulic fluid port; On the said first piston bar first through hole is set radially; The two ends of first through hole are connected with oil duct, first rod chamber respectively; Second through hole radially is set on the body of rod assembly; The two ends of second through hole are connected with first rodless cavity, second rod chamber respectively, and the third through-hole that is connected with second rod chamber is set on the cylinder barrel, connect plug screw on the cylinder barrel at third through-hole place.
The utility model is through above design, and second rod chamber, second through hole, first rodless cavity form enclosed cavity.During work, make body of rod assembly and piston rod one be in complete retracted mode oil cylinder earlier, open plug screw, fill it up with hydraulic oil and drain to enclosed cavity and tighten plug screw in the chamber behind the air, the sealing of the 3rd hole is formed enclosed cavity.Through the back hydraulic fluid port second rodless cavity oil-feed, promote body of rod assembly and stretch out, the second rod chamber volume reduces, and Seal cage hydraulic oil flows into first rodless cavity through second through hole, promotes the first piston bar and stretches out, and first rod chamber is through the oil duct oil return; Through the preceding hydraulic fluid port first rod chamber oil-feed, first piston bar retraction, the first rodless cavity volume reduces, and Seal cage hydraulic oil gets into second rod chamber, makes body of rod assembly bounce back.
The utility model makes second rod chamber and the first rodless cavity sectional area equate because the sectional area of first rod chamber and second rodless cavity fixes, when back hydraulic fluid port or preceding hydraulic fluid port input flow rate one regularly, body of rod assembly and first piston bar while are at the uniform velocity flexible; Through the oil-feed flow of hydraulic fluid port before and after the control, realize the control of body of rod assembly and first piston bar stretching speed.
Preceding hydraulic fluid port is separately positioned on first piston bar and the rear end cover with the back hydraulic fluid port, has avoided the design and the processing of the complicated runner of body of rod assembly.
Description of drawings
Fig. 1 is the structural representation of the utility model retracted mode.
Fig. 2 stretches out the structural representation of state for the utility model.
Among the figure, 1 first piston bar, 2 first guide sleeves, 3 second guide sleeves, 4 plug screws, 5 body of rod assemblies; 5-1 second piston rod, 5-2 second piston, 6 cylinder barrels, 7 first pistons, 8 rear end covers; 9 third through-holes, 10 second rod chambers, 11 second through holes, 12 first rodless cavities, 13 second rodless cavities; 14 back hydraulic fluid ports, 15 first through holes, 16 first rod chambers, 17 oil ducts, 18 preceding hydraulic fluid ports.
Embodiment
Like Fig. 1, shown in 2,, comprise cylinder barrel 6 for double-action twin-stage constant speed oil cylinder; The rear end disjunctor rear end cover 8 of cylinder barrel 6; Body of rod assembly 5 is set in the cylinder barrel 6, and body of rod assembly 5 comprises the second piston rod 5-1 and the second piston 5-2, and the second piston 5-2 is connected the rear end of the second piston rod 5-1; Between cylinder barrel 6, rear end cover 8 and the second piston 5-2 is second rodless cavity 13, and the back hydraulic fluid port 14 that is connected with second rodless cavity 13 is set on the rear end cover 8.Second guide sleeve, 3, the second guide sleeves 3 being set between the front end of cylinder barrel 6 and the body of rod assembly 5 being connected with cylinder barrel 6, is second rod chamber 10 between cylinder barrel 6, second guide sleeve 3 and the body of rod assembly 5.First piston bar 1 and first piston 7 are set in the body of rod assembly 5; First piston 7 is connected the rear end of first piston bar 1; First guide sleeve 2 is set between the front end of body of rod assembly 5 and the first piston bar 1; First guide sleeve 2 is connected with the second piston rod 5-1, and oil duct 17 axially is set in the first piston bar 1, and the front end of oil duct 17 is provided with preceding hydraulic fluid port 18; Be to be first rod chamber 16 between first rodless cavity, 12, the first guide sleeves 2, first piston bar 1, first piston 7 and the second piston rod 5-1 between first piston 7 and the body of rod assembly 5.First through hole 15 radially is set on the first piston bar 1; The two ends of first through hole 15 are connected with oil duct 17, first rod chamber 16 respectively; Second through hole 11 radially is set on the body of rod assembly 5; The two ends of second through hole 11 are connected with first rodless cavity 12, second rod chamber 10 respectively, and the third through-hole 9 that is connected with second rod chamber 10 is set on the cylinder barrel 6, connection plug screw 4 on the cylinder barrel 6 at third through-hole 9 places.
Claims (1)
1. a double-action twin-stage constant speed oil cylinder comprises cylinder barrel, the rear end disjunctor rear end cover of cylinder barrel; Body of rod assembly is set in the cylinder barrel, and body of rod assembly comprises second piston rod and second piston, and second piston is connected the rear end of second piston rod; Be second rodless cavity between cylinder barrel, rear end cover and second piston; Between the front end of cylinder barrel and the body of rod assembly second guide sleeve is set, second guide sleeve is connected with cylinder barrel, is second rod chamber between cylinder barrel, second guide sleeve and the body of rod assembly; In the said body of rod assembly first piston bar and first piston are set; First piston is connected the rear end of first piston bar; Between the front end of body of rod assembly and the first piston bar first guide sleeve is set; First guide sleeve is connected with body of rod assembly, is first rodless cavity between first piston and the body of rod assembly, is first rod chamber between first guide sleeve, first piston bar, first piston and second piston rod; It is characterized in that: the back hydraulic fluid port that is connected with second rodless cavity is set on the said rear end cover, in the said first piston bar oil duct is set axially, the front end of oil duct is provided with preceding hydraulic fluid port; On the said first piston bar first through hole is set radially; The two ends of first through hole are connected with oil duct, first rod chamber respectively; Second through hole radially is set on the body of rod assembly; The two ends of second through hole are connected with first rodless cavity, second rod chamber respectively, and the third through-hole that is connected with second rod chamber is set on the cylinder barrel, connect plug screw on the cylinder barrel at third through-hole place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220218692 CN202579440U (en) | 2012-05-16 | 2012-05-16 | Double-acting two-stage constant speed cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220218692 CN202579440U (en) | 2012-05-16 | 2012-05-16 | Double-acting two-stage constant speed cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579440U true CN202579440U (en) | 2012-12-05 |
Family
ID=47248856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220218692 Expired - Fee Related CN202579440U (en) | 2012-05-16 | 2012-05-16 | Double-acting two-stage constant speed cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579440U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067602A (en) * | 2016-11-15 | 2018-05-25 | 江苏睿阳精密工业股份有限公司 | A kind of injection system of extrusion casting machine |
| CN109798277A (en) * | 2019-02-22 | 2019-05-24 | 山东万通液压股份有限公司 | A kind of thrusts two-stage hydraulic cylinders such as constant speed and exhaust oil filling method |
| CN110566535A (en) * | 2019-08-23 | 2019-12-13 | 格力乐液压系统(常州)有限公司 | Constant speed differential variable oil cylinder |
| CN111911482A (en) * | 2020-07-27 | 2020-11-10 | 南京理工大学 | Two-stage constant-speed oil cylinder |
-
2012
- 2012-05-16 CN CN 201220218692 patent/CN202579440U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067602A (en) * | 2016-11-15 | 2018-05-25 | 江苏睿阳精密工业股份有限公司 | A kind of injection system of extrusion casting machine |
| CN109798277A (en) * | 2019-02-22 | 2019-05-24 | 山东万通液压股份有限公司 | A kind of thrusts two-stage hydraulic cylinders such as constant speed and exhaust oil filling method |
| CN110566535A (en) * | 2019-08-23 | 2019-12-13 | 格力乐液压系统(常州)有限公司 | Constant speed differential variable oil cylinder |
| CN110566535B (en) * | 2019-08-23 | 2024-02-20 | 格力乐液压系统(常州)有限公司 | Constant speed differential speed variable oil cylinder |
| CN111911482A (en) * | 2020-07-27 | 2020-11-10 | 南京理工大学 | Two-stage constant-speed oil cylinder |
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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: 20121205 Termination date: 20190516 |