CN201747696U - Compound oil cylinder - Google Patents
Compound oil cylinder Download PDFInfo
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- CN201747696U CN201747696U CN2010202932031U CN201020293203U CN201747696U CN 201747696 U CN201747696 U CN 201747696U CN 2010202932031 U CN2010202932031 U CN 2010202932031U CN 201020293203 U CN201020293203 U CN 201020293203U CN 201747696 U CN201747696 U CN 201747696U
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- cylinder
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- master cylinder
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- piston rod
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Abstract
The utility model discloses a compound oil cylinder. The compound oil cylinder comprises a main cylinder subassembly and an auxiliary cylinder subassembly; the main cylinder subassembly comprises a main cylinder body, a main piston rod, a main piston, and a main cylinder rear cover assembly arranged at the tail part of the main cylinder body, wherein the main piston rod and the main piston are arranged in the main cylinder body; the main cylinder body is divided into a main cylinder pressure applying cavity and a main cylinder back stroke cavity through the main piston; oil feeding parts communicated with the main cylinder pressure applying cavity and the main cylinder back stroke cavity, and oil discharging parts communicated with the main cylinder back stroke cavity and an oil tank are arranged on the main cylinder body; a main piston rod inner cavity with an open end is formed in the main piston rod; the auxiliary cylinder subassembly comprises an auxiliary piston rod passing through the main piston rod inner cavity, an auxiliary piston arranged at the inner end of the auxiliary piston rod and used for dividing the main piston rod inner cavity into an auxiliary cylinder pressure applying cavity and an auxiliary cylinder back stroke cavity, an oil feeding structure used for communicating the auxiliary cylinder pressure applying cavity with the oil tank, and an oil discharging structure used for communicating the auxiliary cylinder back stroke cavity with the oil tank; the outer end of the auxiliary piston rod is fixed on the main cylinder rear cover; and an oil seal assembly which is used for sealing the auxiliary cylinder back stroke cavity and connected with the man piston rod is arranged between the wall surface of the opened end of the main piston rod inner cavity and the outer wall surface of the auxiliary piston rod.
Description
Technical field
The utility model belongs to the power power unit on the hydraulic equipment, a kind of specifically composite oil cylinder.
Background technique
Finishing of actions such as the F.F. of most hydraulic press top slide blocks, rewind down, worker's speed, buffering rely on oil outer pressure-controlled driving oil cylinder to realize, but traditional cylinder structure is difficult to realize above-mentioned functions.Existing solution be by the peripheral hardware oil cylinder or in establish oil cylinder and assist master cylinder work, adopt the peripheral hardware oil cylinder to have big, the baroque shortcoming of hydraulic press volume, establish oil cylinder in the employing and have mainly that single cylinder length is big, the shortcoming of complex manufacturing technology.Disclose the patent No. as China national Department of Intellectual Property in 2004-12-29 and be " 200320110440.X ", name is called the patent of " complex liquid compressing cylinder ", back cylinder and the compound structure of preceding cylinder have been adopted, cylinder piston rod was realized F.F. before the cylinder afterbody was assisted before back cylinder acted on, actions such as rewind down, but still there is the big shortcoming of single cylinder length in the oil cylinder of this composite structure, China national Department of Intellectual Property is in 2007-08-29 disclosed " multi-functional combined oil cylinder " patent for another example, the structure that adopts former oil cylinder inner chamber to set up quick chamber and buffer cavity realizes F.F., rewind down, the worker advances, actions such as buffering, but shortcoming is to make single cylinder length strengthen equally.
Summary of the invention
Problem to be solved in the utility model just provides a kind of composite oil cylinder simple in structure, under the prerequisite that satisfies functions such as oil cylinder F.F., rewind down, worker's speed, reduces single cylinder volume and length.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of composite oil cylinder, comprise master cylinder assembly, secondary cylinder component, described master cylinder assembly comprises Master cylinder body, be located at main piston rod and main piston in the Master cylinder body, be located at the master cylinder rear cover assembly of Master cylinder body afterbody, described main piston is divided into master cylinder exert pressure chamber and master cylinder backhaul chamber with the Master cylinder body inner chamber, Master cylinder body is provided with the exert pressure oil-feed portion of chamber and fuel tank of master cylinder that is communicated with, the fuel-displaced portion that is communicated with master cylinder backhaul chamber and fuel tank, it is characterized in that: the mobile jib inner chamber that is provided with an end opening in the described main piston rod, described secondary cylinder component comprises the sub-piston bar that is installed on the mobile jib inner chamber, it is inner and the mobile jib inner chamber is divided into the exert pressure sub-piston in chamber and secondary cylinder backhaul chamber of secondary cylinder to be located at the sub-piston bar, be communicated with the exert pressure oil-feed structure of chamber and fuel tank of secondary cylinder, the fuel-displaced structure that is communicated with secondary cylinder backhaul chamber and fuel tank, the outer end of described sub-piston bar is fixed on the master cylinder rear cover assembly, and the oil seal assembly that is provided with between the opening end wall of described mobile jib inner chamber and the outer wall of sub-piston bar with the main piston rod interlock is used to seal described secondary cylinder backhaul chamber.
Further, described oil seal assembly comprises the secondary cylinder guide sleeve that is nested with at sub-piston bar outer wall, the opening end wall of mobile jib inner chamber is designed to the ledge structure of indent, the outer wall of described secondary cylinder guide sleeve is provided with the card shelves that the step surface with ledge structure offsets, the card shelves are pressed abd fixed on the step surface by platen, and the inner surface of secondary cylinder guide sleeve and sub-piston bar outer wall are slidingly matched.
Further, be provided with secondary bar inner chamber in the described sub-piston bar, described oil-feed structure is the oil inlet pipe that is installed on secondary bar inner chamber, and described oil inlet pipe the inner is passed sub-piston and is communicated with the secondary cylinder chamber of exerting pressure, and the oil inlet pipe outer end is stretched out Master cylinder body and is communicated with fuel tank.
Further, described fuel-displaced structure is included in formed oil back chamber between secondary bar inner chamber wall and the oil inlet pipe outer wall, body of rod the inner of sub-piston bar is provided with the spill port that is communicated with oil back chamber and secondary cylinder backhaul chamber, and the body of rod outer end of sub-piston bar is provided with the oil returning pipe joint that is communicated with oil back chamber and fuel tank.
Further, described master cylinder rear cover assembly comprises and is used to seal master cylinder exert pressure the master cylinder bonnet in chamber, the fixing cylinder bottom nut used of master cylinder bonnet that the outer end of described sub-piston bar is through on master cylinder bonnet and the cylinder bottom nut admittedly.
Further, the front opening place of described Master cylinder body is provided with and is used to seal the master cylinder guide sleeve in master cylinder backhaul chamber, the fixing cylinder mouth flange of master cylinder guide sleeve, and the internal face of described master cylinder guide sleeve and the outer wall of main piston rod are slidingly matched.
Further, described oil-feed portion comprise be located at the Master cylinder body rear end be communicated with master cylinder exert pressure the chamber oil inlet hole, connect the oil-feed flange of oil inlet hole and fuel tank.
Further, described fuel-displaced portion comprises the oil outlet that is located at Master cylinder body front end connection master cylinder backhaul chamber, the fuel-displaced flange that connects oil outlet and fuel tank.
Further, described main piston rod front end is connected with the squeeze head of processing usefulness by locking nut.
The beneficial effects of the utility model: adopt built-in secondary cylinder component, the sub-piston bar has been arranged on main piston rod inside, shortened single cylinder length greatly, saved the subsidiary cylinder in the existing composite oil cylinder simultaneously, directly with the cylinder body of the main piston rod body of rod as secondary cylinder component, simplified cylinder structure, the volume after master cylinder assembly and secondary cylinder component are compound reduces, and makes to the utlity model has advantage easy to process, that cost is low; By the exert pressure control of oil pressure in chamber and the secondary cylinder backhaul chamber of master cylinder is exerted pressure chamber and master cylinder backhaul chamber, secondary cylinder, can realize just that oil cylinder advances at work fast, the function of quick return, low speed compacting.
Feature of the present utility model, advantage and working principle thereof will be elaborated in conjunction with the accompanying drawings by embodiment.
Description of drawings
Fig. 1 is a cylinder structure schematic representation of the present utility model (fuel tank is not shown);
Fig. 2 is the enlarged view (structural representation of oil seal assembly) at A place among Fig. 1;
Fig. 3 is the oil circuit schematic representation of the utility model oil cylinder when F.F.;
Fig. 4 is the oil circuit schematic representation of the utility model oil cylinder when backhaul.
Embodiment
As Fig. 1, shown in Figure 2, the utility model is a kind of composite oil cylinder, comprise master cylinder assembly, secondary cylinder component, described master cylinder assembly comprises Master cylinder body 1, be located at main piston rod 10 and main piston 11 in the Master cylinder body 1, be located at the master cylinder rear cover assembly of Master cylinder body 1 afterbody, described main piston 11 is divided into master cylinder exert pressure chamber 3 and master cylinder backhaul chamber 2 with Master cylinder body 1 inner chamber, Master cylinder body 1 is provided with the exert pressure oil-feed portion of chamber 3 and fuel tank of master cylinder that is communicated with, the fuel-displaced portion that is communicated with master cylinder backhaul chamber 2 and fuel tank, be provided with the mobile jib inner chamber 4 of an end opening in the described main piston rod 10, described secondary cylinder component comprises the sub-piston bar 5 that is installed on mobile jib inner chamber 4, it is inner and mobile jib inner chamber 4 is divided into the exert pressure sub-piston 50 in chamber 41 and secondary cylinder backhaul chamber 40 of secondary cylinder to be located at sub-piston bar 5, be communicated with the exert pressure oil-feed structure of chamber 41 and fuel tank of secondary cylinder, the fuel-displaced structure that is communicated with secondary cylinder backhaul chamber 40 and fuel tank, the outer end of described sub-piston bar 5 is fixed on the master cylinder rear cover assembly, and the oil seal assembly that is provided with between the opening end wall of described mobile jib inner chamber 4 and the outer wall of sub-piston bar 5 with main piston rod 10 interlocks is used to seal secondary cylinder backhaul chamber 40.
Oil seal assembly comprises the secondary cylinder guide sleeve 8 that is nested with at sub-piston bar 5 outer walls, the opening end wall of mobile jib inner chamber 4 is designed to the ledge structure of indent, the outer wall of described secondary cylinder guide sleeve 8 is provided with the card shelves 80 that the step surface 101 with ledge structure offsets, card shelves 80 are pressed abd fixed on the step surface 101 by platen 6, and the inner surface of secondary cylinder guide sleeve 8 and sub-piston bar 5 outer wall are slidingly matched; Be provided with secondary bar inner chamber in the sub-piston bar 5, described oil-feed structure is the oil inlet pipe 51 that is installed on secondary bar inner chamber, and described oil inlet pipe 51 the inners are passed sub-piston 50 and are communicated with the secondary cylinder chamber 41 of exerting pressure, and oil inlet pipe 51 outer ends are stretched out Master cylinder body 1 and are communicated with fuel tank; Fuel-displaced structure is included in formed oil back chamber 7 between secondary bar inner chamber wall and oil inlet pipe 51 outer wall, body of rod the inner of sub-piston bar 5 is provided with the spill port 53 that is communicated with oil back chamber 7 and secondary cylinder backhaul chamber 40, and the body of rod outer end of sub-piston bar 5 is provided with the oil returning pipe joint 52 that is communicated with oil back chamber 7 and fuel tank; The master cylinder rear cover assembly comprises and is used to seal master cylinder exert pressure the master cylinder bonnet 12 in chamber 3, the fixing cylinder bottom nut 13 of master cylinder bonnet 12 usefulness that the outer end of described sub-piston bar 5 is through on master cylinder bonnet 12 and the cylinder bottom nut 13 admittedly; The front opening place of Master cylinder body 1 is provided with and is used to seal the master cylinder guide sleeve 14 in master cylinder backhaul chamber 2, the fixing cylinder mouth flange 15 of master cylinder guide sleeve 14, and the outer wall of the internal face of described master cylinder guide sleeve 14 and main piston rod 10 is slidingly matched; Oil-feed portion comprise be located at Master cylinder body 1 rear end be communicated with master cylinder exert pressure chamber 3 oil inlet hole 18, connect the oil-feed flange 19 of oil inlet hole 18 and fuel tank; Fuel-displaced portion comprises the oil outlet 16 that is located at Master cylinder body 1 front end connection master cylinder backhaul chamber 2, the fuel-displaced flange 17 that connects oil outlet 16 and fuel tank; Main piston rod 10 front ends are connected with the squeeze head 91 of processing usefulness by locking nut 9.
Working principle: as shown in Figure 3, oil cylinder is when F.F., hydraulic oil at first charges into the secondary cylinder chamber 41 of exerting pressure from oil inlet pipe 51, advance at the main piston rod 10 inner powered main piston rods 10 that produce, and the hydraulic oil in the secondary cylinder backhaul chamber 40 flows back to fuel tank by spill port 53, oil back chamber 7, oil returning pipe joint 52; Hydraulic oil charges into the master cylinder chamber 3 of exerting pressure by the oil inlet hole on the Master cylinder body 1 18, promote main piston rod 10 once more by main piston 11 and advance, and the hydraulic oil in master cylinder backhaul chamber 2 flows back to fuel tank by oil outlet 16, realizes the quick propelling of main piston rod 10.
As shown in Figure 4, oil cylinder is when backhaul, hydraulic oil at first charges into secondary cylinder backhaul chamber 40 from oil returning pipe joint 52, oil back chamber 7, spill port 53, retreats at the inner powered main piston rods 10 that produce of main piston rod 10, and the exert pressure hydraulic oil in chamber 41 of secondary cylinder then flows back to fuel tank by oil inlet pipe 51; Hydraulic oil charges into master cylinder backhaul chamber 2 by the oil outlet on the Master cylinder body 1 16, promotes main piston rod 10 once more by main piston 11 and retreats, and the exert pressure hydraulic oil in chamber 3 of master cylinder then flows back to fuel tank by oil inlet hole 18, realizes the quick return of main piston rod 10.
Oil cylinder low speed when compacting, master cylinder chamber 3 and secondary cylinder chamber 41 oil-feeds simultaneously of exerting pressure of exerting pressure, master cylinder backhaul chamber 2 and secondary cylinder backhaul chamber 40 then are emptyings simultaneously, realize that main piston rod 10 low speed advance.
Above-mentioned working principle is the utility model oil cylinder three kinds of working staties comparatively commonly used, but from the technical solution of the utility model as can be known, just can realize the multiple pressing function of oil cylinder by the exert pressure control of oil pressure in chamber 41 and the secondary cylinder backhaul chamber 40 of chamber 3 that master cylinder is exerted pressure, master cylinder backhaul chamber 2, secondary cylinder.And the foregoing description is not construed as limiting protection domain of the present utility model; those skilled in the art can make various changes and distortion according to the utility model; only otherwise break away from spirit of the present utility model, all should belong to the defined scope of the utility model claims.
Claims (9)
1. composite oil cylinder, comprise master cylinder assembly, secondary cylinder component, described master cylinder assembly comprises Master cylinder body (1), be located at main piston rod (10) and main piston (11) in the Master cylinder body (1), be located at the master cylinder rear cover assembly of Master cylinder body (1) afterbody, described main piston (11) is divided into master cylinder exert pressure chamber (3) and master cylinder backhaul chamber (2) with Master cylinder body (1) inner chamber, Master cylinder body (1) is provided with the exert pressure oil-feed portion of chamber (3) and fuel tank of master cylinder that is communicated with, the fuel-displaced portion that is communicated with master cylinder backhaul chamber (2) and fuel tank, it is characterized in that: the mobile jib inner chamber (4) that is provided with an end opening in the described main piston rod (10), described secondary cylinder component comprises the sub-piston bar (5) that is installed on mobile jib inner chamber (4), it is inner and mobile jib inner chamber (4) is divided into the exert pressure sub-piston (50) in chamber (41) and secondary cylinder backhaul chamber (40) of secondary cylinder to be located at sub-piston bar (5), be communicated with the exert pressure oil-feed structure of chamber (41) and fuel tank of secondary cylinder, the fuel-displaced structure that is communicated with secondary cylinder backhaul chamber (40) and fuel tank, the outer end of described sub-piston bar (5) is fixed on the master cylinder rear cover assembly, and the oil seal assembly that is provided with between the outer wall of the opening end wall of described mobile jib inner chamber (4) and sub-piston bar (5) with main piston rod (10) interlock is used to seal described secondary cylinder backhaul chamber (40).
2. a kind of composite oil cylinder according to claim 1, it is characterized in that: described oil seal assembly comprises the secondary cylinder guide sleeve (8) that is nested with at sub-piston bar (5) outer wall, the opening end wall of mobile jib inner chamber (4) is designed to the ledge structure of indent, the outer wall of described secondary cylinder guide sleeve (8) is provided with the card shelves (80) that the step surface (101) with ledge structure offsets, card shelves (80) are pressed abd fixed on the step surface (101) by platen (6), and the inner surface of secondary cylinder guide sleeve (8) and sub-piston bar (5) outer wall are slidingly matched.
3. a kind of composite oil cylinder according to claim 1 and 2, it is characterized in that: be provided with secondary bar inner chamber in the described sub-piston bar (5), described oil-feed structure is the oil inlet pipe (51) that is installed on secondary bar inner chamber, described oil inlet pipe (51) the inner is passed sub-piston (50) and is communicated with the secondary cylinder chamber (41) of exerting pressure, and oil inlet pipe (51) outer end is stretched out Master cylinder body (1) and is communicated with fuel tank.
4. a kind of composite oil cylinder according to claim 3, it is characterized in that: described fuel-displaced structure is included in formed oil back chamber (7) between secondary bar inner chamber wall and oil inlet pipe (51) outer wall, body of rod the inner of sub-piston bar (5) is provided with the spill port (53) that is communicated with oil back chamber (7) and secondary cylinder backhaul chamber (40), and the body of rod outer end of sub-piston bar (5) is provided with the oil returning pipe joint (52) that is communicated with oil back chamber (7) and fuel tank.
5. a kind of composite oil cylinder according to claim 1 and 2, it is characterized in that: described master cylinder rear cover assembly comprises and is used to seal master cylinder exert pressure the master cylinder bonnet (12) in chamber (3), the fixing cylinder bottom nut (13) of master cylinder bonnet (12) usefulness that the outer end of described sub-piston bar (5) is through on master cylinder bonnet (12) and the cylinder bottom nut (13) admittedly.
6. a kind of composite oil cylinder according to claim 1 and 2, it is characterized in that: the front opening place of described Master cylinder body (1) is provided with and is used to seal the master cylinder guide sleeve (14) in master cylinder backhaul chamber (2), the fixing cylinder mouth flange (15) of master cylinder guide sleeve (14), and the outer wall of the internal face of described master cylinder guide sleeve (14) and main piston rod (10) is slidingly matched.
7. a kind of composite oil cylinder according to claim 1 and 2 is characterized in that: described oil-feed portion comprise be located at Master cylinder body (1) rear end be communicated with master cylinder exert pressure chamber (3) oil inlet hole (18), connect the oil-feed flange (19) of oil inlet hole (18) and fuel tank.
8. a kind of composite oil cylinder according to claim 1 and 2 is characterized in that: described fuel-displaced portion comprises the oil outlet (16) that is located at Master cylinder body (1) front end connection master cylinder backhaul chamber (2), the fuel-displaced flange (17) that connects oil outlet (16) and fuel tank.
9. a kind of composite oil cylinder according to claim 1 and 2 is characterized in that: described main piston rod (10) front end is connected with the squeeze head (91) of processing usefulness by locking nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202932031U CN201747696U (en) | 2010-08-12 | 2010-08-12 | Compound oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202932031U CN201747696U (en) | 2010-08-12 | 2010-08-12 | Compound oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747696U true CN201747696U (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202932031U Expired - Lifetime CN201747696U (en) | 2010-08-12 | 2010-08-12 | Compound oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747696U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929486A (en) * | 2010-08-12 | 2010-12-29 | 湖州机床厂有限公司 | Composite oil cylinder |
| CN102162479A (en) * | 2011-05-06 | 2011-08-24 | 浙江浦大液压机械有限公司 | Composite boosting oil cylinder |
| CN102434530A (en) * | 2011-12-05 | 2012-05-02 | 韶关液压件厂有限公司 | Differential-type plunger composite oil cylinder |
| CN106194889A (en) * | 2016-08-04 | 2016-12-07 | 宁波普瑞达液压科技有限公司 | A kind of High-Speed Automatic variable oil cylinder |
-
2010
- 2010-08-12 CN CN2010202932031U patent/CN201747696U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929486A (en) * | 2010-08-12 | 2010-12-29 | 湖州机床厂有限公司 | Composite oil cylinder |
| CN101929486B (en) * | 2010-08-12 | 2013-05-29 | 湖州机床厂有限公司 | Composite oil cylinder |
| CN102162479A (en) * | 2011-05-06 | 2011-08-24 | 浙江浦大液压机械有限公司 | Composite boosting oil cylinder |
| CN102162479B (en) * | 2011-05-06 | 2013-01-02 | 浙江浦大液压机械有限公司 | Composite boosting oil cylinder |
| CN102434530A (en) * | 2011-12-05 | 2012-05-02 | 韶关液压件厂有限公司 | Differential-type plunger composite oil cylinder |
| CN106194889A (en) * | 2016-08-04 | 2016-12-07 | 宁波普瑞达液压科技有限公司 | A kind of High-Speed Automatic variable oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110216 Effective date of abandoning: 20130529 |
|
| RGAV | Abandon patent right to avoid regrant |