CN2145888Y - Micro-feed hydraulic cylinder - Google Patents
Micro-feed hydraulic cylinder Download PDFInfo
- Publication number
- CN2145888Y CN2145888Y CN 92244799 CN92244799U CN2145888Y CN 2145888 Y CN2145888 Y CN 2145888Y CN 92244799 CN92244799 CN 92244799 CN 92244799 U CN92244799 U CN 92244799U CN 2145888 Y CN2145888 Y CN 2145888Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- wall
- contacts
- seal ring
- 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
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a micro-feed hydraulic cylinder, which is characterized in that one end of a cylinder drum is sealed, and the other end is fixed with a cylinder head. The centre position of the cylinder head is provided with a piston rod, the piston rod is extended into a piston which is fixed on the end part of the cylinder drum, and the piston is provided with a back stop plug. An oil cavity which comprises the piston, the cylinder drum and a cylinder bottom and an upper cavity or the outside have a leakage path. The hydraulic cylinder has the advantages of simple structure, convenient operation and maintenance and low production cost. The hydraulic cylinder can simplify the equipment of the hydraulic system and has no the driving of the pressure oil, and the energy is saved. The utility model can be widely used in the hydraulic system of the machine tool with micro driving.
Description
The utility model belongs to a kind of oil hydraulic cylinder, particularly a kind of microfeed oil hydraulic cylinder.
Realize that at present the microfeed great majority are to adopt the mechanical reduction mode, thereby equipment is huge, complex structure, power consumpiton is big, and efficient is low.And existing hydraulic system is difficult to realize microfeed.Simultaneously, both at home and abroad there is the problem of leaking in oil hydraulic cylinder, is all prevented that so that raise the efficiency, energy saving guarantees to finish the accurate feeding of hydraulic system trying every possible means.
The purpose of this utility model is to overcome deficiency of the prior art and a kind of microfeed oil hydraulic cylinder that leaks and realize microfeed by the control leakage flow that utilizes is provided.
The purpose of this utility model can realize by following measure fork-like farm tool used in ancient China:
The structure of microfeed oil hydraulic cylinder is, the end sealing of cylinder barrel, and the other end is installing upper cylinder cover.Upper piston rod is being adorned in the center portion of upper cylinder cover, and the end that upper piston rod stretches into cylinder barrel is installing piston, is adorning the check plug on the piston.The oil pocket and the epicoele (or extraneous) that are made of piston, cylinder barrel and cylinder bottom have a leakage way.
The structure of microfeed oil hydraulic cylinder can also be that the sealed end of cylinder barrel is closed.With spiral leakage seam is arranged on the piston outer wall that inner wall of cylinder contacts.Or with piston outer wall that inner wall of cylinder contacts on adorning seal ring, have the Leak hole that forms by Screw Thread Fit Clearance on the piston.Or bottom the cylinder barrel of oil pocket, have the Leak hole that forms by Screw Thread Fit Clearance.
The structure of microfeed oil hydraulic cylinder can also be that the sealed end of cylinder barrel is installing cylinder cap, is adorning seal ring on the following cylinder cap outer wall that contacts with inner wall of cylinder.The center portion of following cylinder cap is being adorned and is being stretched into cylinder barrel and be packed in lower piston rod on the piston.Position dress family dependant's seal ring and dust ring that following cylinder cap contacts with lower piston rod.With spiral leakage seam is arranged on the piston outer wall that inner wall of cylinder contacts.Or on the piston outer wall of inner wall of cylinder contact, adorning seal ring, have the Leak hole that forms by Screw Thread Fit Clearance on the piston.Or bottom the cylinder barrel of oil pocket, have the Leak hole that forms by Screw Thread Fit Clearance.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the utility model embodiment 1 a hydraulic cylinder structure schematic representation;
Fig. 2 is the utility model embodiment 2 a hydraulic cylinder structure schematic representation;
Fig. 3 is the utility model embodiment 3 a hydraulic cylinder structure schematic representation;
Fig. 4 is the utility model embodiment 4 a hydraulic cylinder structure schematic representation;
Fig. 5, Fig. 6 are the utility model embodiment 5 hydraulic cylinder structure schematic representation.
Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:
The structure of microfeed oil hydraulic cylinder as shown in Figure 1, the one end sealing of cylinder barrel 1, the other end is installing upper cylinder cover 2 with bolt, upper piston rod 3 is being adorned in the center portion of upper cylinder cover, the end that upper piston rod stretches into cylinder barrel is installing the threaded piston 4 of its outer wall, adorning one-way valve 5 on the piston, the leakage seam 6 of thread-shaped is being arranged between piston and the inner wall of cylinder.
The structure of microfeed oil hydraulic cylinder as shown in Figure 2, the one end sealing of cylinder barrel 1, the other end is installing upper cylinder cover 2 with bolt, and upper piston rod 3 is being adorned in the center portion of upper cylinder cover, and the end that upper piston rod stretches into cylinder barrel is installing piston 4, adorning one-way valve 5 on the piston, with adorning seal ring 7 on the piston outer wall that inner wall of cylinder contacts, have the hole 8 of thread-shaped on the piston, adorning screw 9 in the hole, and with female 10 lockings of locking, thereby form the Leak hole of Screw Thread Fit Clearance.
The structure of microfeed oil hydraulic cylinder as shown in Figure 3, one end of cylinder barrel 1 is installing cylinder cap 11 with bolt, adorning seal ring 12 on the following cylinder cap that contacts with inner wall of cylinder, the center portion of following cylinder cap is being adorned and is being stretched into cylinder barrel and be packed in lower piston rod 13 on the piston 4, and is adorning seal ring 14 and dust ring 15 on the following cylinder cap that the lower piston rod outer wall contacts.The other end of cylinder barrel is installing upper cylinder cover 2 with bolt, and upper piston rod 3 is being adorned in the center portion of upper cylinder cover, and the end that upper piston rod stretches into cylinder barrel is packed on the piston 4, and the outer wall of piston is thread-shaped.Adorn one-way valve 5 on the piston, forming spiral leakage seam 6 between piston outer wall and the inner wall of cylinder.
The structure of microfeed oil hydraulic cylinder as shown in Figure 4, one end of cylinder barrel 1 is installing cylinder cap 11 with bolt, adorning seal ring 12 on the following cylinder cap that contacts with inner wall of cylinder, the center portion of following cylinder cap is being adorned and is being stretched into cylinder barrel and be packed in lower piston rod 13 on the piston 4, and is adorning seal ring 14 and dust ring 15 on the following cylinder cap that the lower piston rod outer wall contacts.The other end of cylinder barrel is installing upper cylinder cover 2 with bolt, upper piston rod 3 is being adorned in the center portion of upper cylinder cover, the end that upper piston rod stretches into cylinder barrel is packed on the piston 4, adorning one-way valve 5 on the piston, with adorning seal ring 7 on the piston outer wall that inner wall of cylinder contacts, have the hole 8 of thread-shaped on the piston, adorning screw 9 in the hole, and with female 10 lockings of locking, thereby form the Leak hole of Screw Thread Fit Clearance.
The structure of microfeed oil hydraulic cylinder as shown in Figure 5 and Figure 6, in the foregoing description 2 and embodiment's 4 structure, do not offer Leak hole on the piston, and have the hole 8 of thread-shaped in the bottom of oil pocket cylinder barrel, adorning screw 9 in the hole, and with female 10 lockings of locking, thereby form the Leak hole of Screw Thread Fit Clearance.And on upper cylinder cover, have an oil hole 16.
The cylinder barrel of microfeed oil hydraulic cylinder is divided into upper and lower two chambeies by piston, and cavity of resorption is equipped with fluid, is commonly referred to oil pocket.During use, after upper piston rod is stressed, force piston to pressing down, thereby make the cylinder barrel oil pocket produce pressure, compressing fluid leaks into epicoele lentamente from leakage seam between piston and the cylinder barrel or the Leak hole on the piston.Thereby the volume of oil pocket is reduced lentamente, and piston promptly descends lentamente.Because of leakage flow is very little, the speed that piston descends is also just very little, thereby realizes microfeed.During backhaul, one-way valve is opened automatically, and the fluid that leaks into epicoele flows into oil pocket, and piston gets final product fast return.Adopt double piston-rod, so that the piston stress balance, thereby be beneficial to control leakage flow and feed speed.Adjust pressure or the size of leakage seam or the degree of depth that the adjustment screw screws in of upper piston rod, the size of controlled leakage amount, thereby the speed of adjustment feeding.
The utility model compared with prior art has the following advantages;
Use micro-feed hydraulic cylinder can greatly simplify the structure of hydraulic system, reduce production costs; This hydraulic cylinder structure is simple, operation, easy to maintenance; No pressure oil drives, and power consumption is little, saves the energy, and the efficient height can be widely used in the hydraulic system of little driving lathe.
Claims (7)
1, a kind of microfeed oil hydraulic cylinder that constitutes by cylinder barrel, cylinder cap and piston, it is characterized in that: the end sealing of cylinder barrel, the other end is installing upper cylinder cover, upper piston rod is being adorned in the center portion of upper cylinder cover, the end that upper piston rod stretches into cylinder barrel is installing piston, adorning the check plug on the piston, on the oil pocket wall that constitutes by piston, cylinder barrel and cylinder bottom a leakage way is being arranged.
2, according to the said oil hydraulic cylinder of claim 1, it is characterized in that: the sealed end of cylinder barrel is closed, and spiral leakage seam is arranged on the piston outer wall that inner wall of cylinder contacts.
3, according to the said oil hydraulic cylinder of claim 1, it is characterized in that: the sealed end of cylinder barrel is closed, and is adorning seal ring on the piston outer wall that inner wall of cylinder contacts, has the Leak hole that is formed by Screw Thread Fit Clearance on the piston.
4, according to the said oil hydraulic cylinder of claim 1, it is characterized in that: the sealed end of cylinder barrel is closed, and is adorning seal ring on the piston outer wall that inner wall of cylinder contacts, and the bottom of oil pocket cylinder barrel has the Leak hole that is formed by Screw Thread Fit Clearance.
5, according to the said oil hydraulic cylinder of claim 1, it is characterized in that: the sealed end of cylinder barrel is installing cylinder cap, adorning seal ring on the following cylinder cap outer wall that contacts with inner wall of cylinder, the center portion of following cylinder cap is being adorned and is being stretched into cylinder barrel and be packed in lower piston rod on the piston, seal ring and dust ring are being adorned in the position that following cylinder cap contacts with lower piston rod, and spiral leakage seam are arranged on the piston outer wall that inner wall of cylinder contacts.
6, according to the said oil hydraulic cylinder of claim 1, it is characterized in that: the sealed end of cylinder barrel is installing cylinder cap, adorning seal ring on the following cylinder cap outer wall that contacts with inner wall of cylinder, the center portion of following cylinder cap is being adorned and is being stretched into cylinder barrel and be packed in lower piston rod on the piston, seal ring and dust ring are being adorned in the position that following cylinder cap contacts with lower piston rod, with adorning seal ring on the piston outer wall that inner wall of cylinder contacts, have the Leak hole that forms by Screw Thread Fit Clearance on the piston.
7, according to the said oil hydraulic cylinder of claim 1, it is characterized in that: the sealed end of cylinder barrel is installing cylinder cap, adorning seal ring on the following cylinder cap outer wall that contacts with inner wall of cylinder, the center portion of following cylinder cap is being adorned and is being stretched into cylinder barrel and be packed in lower piston rod on the piston, seal ring and dust ring are being adorned in the position that following cylinder cap contacts with lower piston rod, have the Leak hole that forms by Screw Thread Fit Clearance on the following cylinder cap, and adorning seal ring on the piston outer wall that inner wall of cylinder contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244799 CN2145888Y (en) | 1992-12-19 | 1992-12-19 | Micro-feed hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244799 CN2145888Y (en) | 1992-12-19 | 1992-12-19 | Micro-feed hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2145888Y true CN2145888Y (en) | 1993-11-10 |
Family
ID=33783965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92244799 Expired - Fee Related CN2145888Y (en) | 1992-12-19 | 1992-12-19 | Micro-feed hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2145888Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387484A (en) * | 2017-07-26 | 2017-11-24 | 徐州徐工液压件有限公司 | A kind of reducing switchable type bi-directional drive hydraulic cylinder |
-
1992
- 1992-12-19 CN CN 92244799 patent/CN2145888Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387484A (en) * | 2017-07-26 | 2017-11-24 | 徐州徐工液压件有限公司 | A kind of reducing switchable type bi-directional drive hydraulic cylinder |
| CN107387484B (en) * | 2017-07-26 | 2019-06-04 | 徐州徐工液压件有限公司 | A kind of variable diameter switchable type bi-directional drive hydraulic cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203641136U (en) | Hinge rod hydraulic pressurizing device and hydraulic press | |
| CN108757594B (en) | Oily electricity combination drive environment-friendly and energy-efficient servo hydraulic machine | |
| CN2145888Y (en) | Micro-feed hydraulic cylinder | |
| CN207195354U (en) | A kind of multipurpose numerical control hydraulic oil cylinder | |
| CN207064380U (en) | Double rod single-action hydraulic cylinders | |
| CN206958369U (en) | Intelligent hydraulic control twin-tub actuator | |
| CN2718298Y (en) | Hydraulic press fast cylinder for warm and cold extrusion | |
| CN215486944U (en) | Hydraulic cylinder with simple operation and adjustable type for engineering | |
| CN2169740Y (en) | Power saving mass flow switch valve without leakage | |
| CN209176225U (en) | Save the stretching-machine of power source | |
| CN219282137U (en) | Hydraulic cylinder guide structure | |
| CN2588130Y (en) | Hydraulic cylinder for slow-closing check valve | |
| CN2504421Y (en) | gas-liquid pressure cylinder | |
| CN2443184Y (en) | Special cylinder for corrugating machine | |
| CN109372809A (en) | A kind of swash plate plunger type hydraulic transformer supported using static pressure | |
| CN221462638U (en) | Hydraulic cylinder for machining | |
| CN2522613Y (en) | Dynamic rubber-filling packing box for pumping unit | |
| CN221300291U (en) | Novel integrative fracturing gate valve of hand liquid | |
| CN219549702U (en) | Pressure reducing remote control valve | |
| CN206254999U (en) | ABS air bleeding valves | |
| CN218377934U (en) | Hydraulic oil cylinder of vacuum valve | |
| CN107883030A (en) | A kind of normally closed hydraulic control pressure-reducing valve of plug-in threeway | |
| CN108561371B (en) | Novel buffer oil cylinder | |
| CN221145498U (en) | Angular travel flow control valve | |
| CN218913332U (en) | Piston rod for hydraulic hoist |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |