CN101929486B - Composite oil cylinder - Google Patents
Composite oil cylinder Download PDFInfo
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- CN101929486B CN101929486B CN 201010254473 CN201010254473A CN101929486B CN 101929486 B CN101929486 B CN 101929486B CN 201010254473 CN201010254473 CN 201010254473 CN 201010254473 A CN201010254473 A CN 201010254473A CN 101929486 B CN101929486 B CN 101929486B
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Abstract
The invention discloses a composite oil cylinder, which comprises a main cylinder assembly and a secondary cylinder assembly, wherein the main cylinder assembly comprises a main cylinder body, a main piston rod and a main piston arranged in the main cylinder body, and a main cylinder rear cover assembly arranged at the tail part of the main cylinder body; the main piston divides the cavity of the main cylinder body into a main cylinder pressing cavity and a main cylinder return cavity; the main cylinder body is provided with an oil inlet part for communicating the main cylinder pressing cavity and an oil tank and an oil outlet part for communicating the main cylinder return cavity and the oil tank; a main rod cavity with one open end is formed in the main piston rod; the secondary cylinder assembly comprises a secondary piston rod passing through the main rod cavity, a secondary piston arranged at the inner end of the secondary piston rod and used for dividing the main rod cavity into a secondary cylinder pressing cavity and a secondary cylinder turn cavity, an oil inlet structure for communicating the secondary cylinder pressing cavity and the oil tank, and an oil outlet structure for communicating the secondary cylinder return cavity and the oil tank; the outer end of the secondary piston rod is fixed on the main cylinder rear cover assembly; and an oil seal assembly linked with the main piston rod is arranged between the open end wall of the main rod cavity and the outer wall of the secondary piston rod and used for closing the secondary cylinder return cavity.
Description
Technical field
The invention belongs to the power power unit on the hydraulic equipment, specifically a kind of composite oil cylinder.
Background technique
Finishing of the actions such as the F.F. of most hydraulic press top slide blocks, rewind down, worker's speed, buffering relies on the oil outer pressure-controlled to drive oil cylinder and 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 large, the baroque shortcoming of hydraulic press volume, establish oil cylinder in the employing and have mainly that single cylinder length is large, the shortcoming of complex manufacturing technology.Disclose the patent No. such as China national Department of Intellectual Property in 2004-12-29 and be " 200320110440.X ", name is called the patent of " compound hydralic oil cylinder ", adopted the compound structure of rear cylinder and front cylinder, rear cylinder acts on front cylinder afterbody and assists front cylinder piston rod to realize F.F., the actions such as rewind down, but still there is the large 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 " Multifunction 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, the actions such as buffering, but shortcoming is so that single cylinder length strengthens equally.
Summary of the invention
Problem to be solved by this invention just provides a kind of composite oil cylinder simple in structure, under the prerequisite that satisfies the 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 present invention 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 section of chamber and fuel tank of master cylinder that is communicated with, the fuel-displaced section 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 charging structure of chamber and fuel tank of secondary cylinder, the oil outlet 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, is provided with between the opening end wall of described mobile jib inner chamber and the outer wall of sub-piston bar with the oil seal assembly of main piston rod interlock to be used for sealing 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 charging 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 oil outlet 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 that the outer end of described sub-piston bar is through on master cylinder bonnet and the cylinder bottom nut admittedly for sealing master cylinder exert pressure the master cylinder bonnet in chamber, the fixing cylinder bottom nut used of master cylinder bonnet.
Further, the front opening place of described Master cylinder body is provided with for the master cylinder guide sleeve in sealing 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 section 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 section comprises the oil outlet that is located at the Master cylinder body front end and is communicated with 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.
Beneficial effect of the present invention: adopt built-in secondary cylinder component, it is inner that the sub-piston bar has been arranged on main piston rod, greatly shortened single cylinder length, saved simultaneously the subsidiary cylinder in the existing composite oil cylinder, 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, so that the advantage that the present invention has is easy to process, 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 invention, advantage and working principle thereof will be elaborated by reference to the accompanying drawings by embodiment.
Description of drawings
Fig. 1 is cylinder structure schematic representation of the present invention (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 oil cylinder of the present invention when F.F.;
Fig. 4 is the oil circuit schematic representation of oil cylinder of the present invention when backhaul.
Embodiment
Such as Fig. 1, shown in Figure 2, the present invention 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 section of chamber 3 and fuel tank of master cylinder that is communicated with, the fuel-displaced section 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 charging structure of chamber 41 and fuel tank of secondary cylinder, the oil outlet 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, 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 the oil seal assembly of main piston rod 10 interlocks to be used for sealing 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 charging 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; Oil outlet 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 that the outer end of described sub-piston bar 5 is through on master cylinder bonnet 12 and the cylinder bottom nut 13 admittedly for sealing master cylinder exert pressure the master cylinder bonnet 12 in chamber 3, the fixing cylinder bottom nut 13 of master cylinder bonnet 12 usefulness; The front opening place of Master cylinder body 1 is provided with for the master cylinder guide sleeve 14 in sealing 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 section 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 section comprises the oil outlet 16 that is located at Master cylinder body 1 front end and is communicated with 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 is filled with 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 is filled with the master cylinder chamber 3 of exerting pressure by the oil inlet hole 18 on the Master cylinder body 1, again promote main piston rod 10 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 is filled with 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 is filled with master cylinder backhaul chamber 2 by the oil outlet 16 on the Master cylinder body 1, again promotes main piston rod 10 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 the secondary cylinder chamber 41 simultaneously oil-feeds of exerting pressure of exerting pressure, master cylinder backhaul chamber 2 and secondary cylinder backhaul chamber 40 then are emptyings simultaneously, realize main piston rod 10 low-speed propulsions.
Above-mentioned working principle is oil cylinder of the present invention three kinds of working staties comparatively commonly used, but from technological scheme of the present invention as can be known, just can realize the multiple pressing function of oil cylinder by the exert pressure control of chamber 41 and secondary cylinder backhaul chamber 40 interior oil pressure of chamber 3 that master cylinder is exerted pressure, master cylinder backhaul chamber 2, secondary cylinder.And above-described embodiment is not construed as limiting protection scope of the present invention, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
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 section of chamber (3) and fuel tank of master cylinder that is communicated with, the fuel-displaced section 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 charging structure of chamber (41) and fuel tank of secondary cylinder, the oil outlet 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, 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 the oil seal assembly of main piston rod (10) interlock to be used for sealing 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 charging 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 oil outlet 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 that the outer end of described sub-piston bar (5) is through on master cylinder bonnet (12) and the cylinder bottom nut (13) admittedly for sealing master cylinder exert pressure the master cylinder bonnet (12) in chamber (3), the fixing cylinder bottom nut (13) of master cylinder bonnet (12) usefulness.
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 for the master cylinder guide sleeve (14) in sealing 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 section 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 section comprises the oil outlet (16) that is located at Master cylinder body (1) front end and is communicated with master cylinder backhaul chamber (2), connect the fuel-displaced flange (17) of 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).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010254473 CN101929486B (en) | 2010-08-12 | 2010-08-12 | Composite oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010254473 CN101929486B (en) | 2010-08-12 | 2010-08-12 | Composite oil cylinder |
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| CN101929486A CN101929486A (en) | 2010-12-29 |
| CN101929486B true CN101929486B (en) | 2013-05-29 |
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| CN 201010254473 Active CN101929486B (en) | 2010-08-12 | 2010-08-12 | Composite oil cylinder |
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| CN105881966A (en) * | 2016-04-08 | 2016-08-24 | 佛山市聚锋液压设备制造有限公司 | Hydraulic press |
| CN106678122B (en) * | 2017-02-20 | 2018-05-04 | 合肥长源液压股份有限公司 | A kind of primary and secondary differential hydro cylinder |
| CN108050123B (en) * | 2017-11-29 | 2019-04-12 | 重庆维庆液压机械有限公司 | Two-way Hydraulic Cylinder |
| CN112324736B (en) * | 2019-08-05 | 2024-06-14 | 广州晶品智能压塑科技股份有限公司 | Combined type booster cylinder |
| CN110735825B (en) * | 2019-10-28 | 2021-04-13 | 山东金利液压科技有限公司 | Composite function oil cylinder |
| CN110748528B (en) * | 2019-10-28 | 2021-05-14 | 杭州青流液压设备制造有限公司 | Control valve for oil cylinder |
| CN113323943B (en) * | 2021-05-25 | 2021-11-02 | 徐州徐工基础工程机械有限公司 | Stroke-adjustable double-stroke single-stage double-acting drill rod clamping oil cylinder |
| CN115450984A (en) * | 2022-09-23 | 2022-12-09 | 江苏万川液压机械设备有限公司 | Primary-secondary composite cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667221Y (en) * | 2003-10-28 | 2004-12-29 | 江阴市华宏液压机械研究所 | Compound hydralic oil cylinder |
| CN200940615Y (en) * | 2006-07-07 | 2007-08-29 | 合肥锻压机床有限公司 | Multifunction combined oil cylinder |
| CN201747696U (en) * | 2010-08-12 | 2011-02-16 | 湖州机床厂有限公司 | Compound oil cylinder |
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2010
- 2010-08-12 CN CN 201010254473 patent/CN101929486B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667221Y (en) * | 2003-10-28 | 2004-12-29 | 江阴市华宏液压机械研究所 | Compound hydralic oil cylinder |
| CN200940615Y (en) * | 2006-07-07 | 2007-08-29 | 合肥锻压机床有限公司 | Multifunction combined oil cylinder |
| CN201747696U (en) * | 2010-08-12 | 2011-02-16 | 湖州机床厂有限公司 | Compound oil cylinder |
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