CN103148048A - Multistage-piston hydraulic tension oil cylinder - Google Patents

Multistage-piston hydraulic tension oil cylinder Download PDF

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Publication number
CN103148048A
CN103148048A CN2013100991353A CN201310099135A CN103148048A CN 103148048 A CN103148048 A CN 103148048A CN 2013100991353 A CN2013100991353 A CN 2013100991353A CN 201310099135 A CN201310099135 A CN 201310099135A CN 103148048 A CN103148048 A CN 103148048A
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CN
China
Prior art keywords
piston
cylinder
oil cylinder
oil
piston rod
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.)
Pending
Application number
CN2013100991353A
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Chinese (zh)
Inventor
严瑞山
朱壮连
王振国
郭鹏
郝清勇
何利峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG SHUANGYONG MACHINE MANUFACTURING CO LTD
Original Assignee
LUOYANG SHUANGYONG MACHINE MANUFACTURING CO LTD
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Filing date
Publication date
Application filed by LUOYANG SHUANGYONG MACHINE MANUFACTURING CO LTD filed Critical LUOYANG SHUANGYONG MACHINE MANUFACTURING CO LTD
Priority to CN2013100991353A priority Critical patent/CN103148048A/en
Publication of CN103148048A publication Critical patent/CN103148048A/en
Pending legal-status Critical Current

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Abstract

The invention belongs to hydraulic tension oil cylinders and mainly relates to a multistage-piston hydraulic tension oil cylinder. The multistage-piston hydraulic tension oil cylinder comprises two groups of oil cylinders, which have the same structure and are symmetrically arranged, wherein each group of oil cylinder is provided with a piston rod and a plurality of pistons located on the piston rod to constitute a multi-stage piston structure of each group of oil cylinder; during working, the piston rods of the two groups of oil cylinders move in opposite directions; a cylinder body is arranged corresponding to each stage of piston, and each cylinder body is the same in inner diameter and coincident in axis; two adjacent cylinder bodies are connected through a connecting piece, and a separation component is arranged between two adjacent cylinder bodies to divide the adjacent cylinder bodies into separate chambers; and each piston on each piston rod is located in the separate chamber correspondingly. By adoption of the technical scheme, the multistage-piston hydraulic tension oil cylinder provided by the invention has the beneficial effects of large tension, small size, low oil pressure and low steel consumption.

Description

Multi-level piston tension oil cylinder
Technical field
The invention belongs to the tension oil cylinder, relate generally to a kind of multi-level piston tension oil cylinder; Two parts tension or controls that spacing is far away on machinery equipment, parts can only inwardly closely be moved in opposite directions by tightening force.
Background technique
Existing tension oil cylinder will realize that large pulling force can only realize by the pressure that increases cylinder diameter, piston and raising hydraulic oil, because cylinder diameter, piston are very large, certainly will will consume a lot of steel; Hydraulic fluid pressure is high, and high oil sealing and the Sealing of service property (quality) is bound to; Pipeline, valve and hydraulic services often occur because hydraulic fluid pressure is high to leak and pressure drop, cause the machine cisco unity malfunction that breaks down, and impact is produced and carried out smoothly.
Summary of the invention
Purpose of the present invention proposes a kind of multi-level piston tension oil cylinder for existing deficiency in above-mentioned prior art just.
The present invention realizes that its goal of the invention takes following technical proposals:
Multi-level piston tension oil cylinder of the present invention, described pull action cylinder has two group oil cylinders, and two groups of described cylinder structures are identical and be symmetrical arranged; Every group oil cylinder has a piston rod and the some pistons that are positioned on described piston rod, consists of the multi-level piston structure of every group oil cylinder; When work, the piston rod of two groups of described oil cylinders is move toward one another; The described piston of corresponding every one-level is provided with cylinder body, the identical and dead in line of the internal diameter of each cylinder body; Adjacent two cylinder bodies connect by link and be provided with isolated component between adjacent two cylinder bodies, and adjacent cylinders is divided into separately independently chamber; Each the described piston correspondence that is arranged on piston rod is positioned at an independently chamber; Corresponding each independently chamber be respectively arranged with oil inlet pipe, return tube; Two groups of described oil cylinders have shared chamber, described shared chamber is positioned at the binding site of two groups of described oil cylinder front ends, in every group of described oil cylinder, foremost piston all is arranged in and shares chamber, two groups of described oil cylinders have shared return opening, described return opening is communicated with described shared chamber, consists of multi-level piston tension oil cylinder.
Multi-level piston tension oil cylinder of the present invention, the piston that is positioned in every group oil cylinder on described piston rod is at least two.
Multi-level piston tension oil cylinder of the present invention, described isolated component has the center cavity that piston rod passes.
Multi-level piston tension oil cylinder of the present invention, described isolated component is the cylindrical body with center cavity, has the annular boss that is connected in order to cylinder body on the cylindrical periphery of isolated component, described annular boss and is integrally connected by clamping bolt and adjacent two cylinder bodies between adjacent two cylinder bodies.
Multi-level piston tension oil cylinder of the present invention, described isolated component has the center cavity that piston rod passes, and described piston rod passes the described center cavity of isolated component, and the seal ring III is set between the center cavity of piston rod and isolated component.
Multi-level piston tension oil cylinder of the present invention, described isolated component is spacer.
Multi-level piston tension oil cylinder of the present invention arranges seal ring between described piston and cylinder body.
Beneficial effect of the present invention is as follows:
A kind of multi-level piston tension oil cylinder that the present invention proposes is taked technique scheme, has that pulling force is large, volume is little, a low fuel pressure, beneficial effect that the consumption steel are few.
Description of drawings
Fig. 1 is structural representation of the present invention.
In figure; 1. piston rod I, 2. seal ring I, 3. clamping bolt I, 4. gland, 5. seal ring II, 6. the first oil inlet pipe, 7. first piston, 8. cylinder body I, 9. seal ring III, 10. spacer, 11. the second oil inlet pipe, 12. clamping bolt II, 13. seal ring IV, 14. the second piston, 15. tightening nuts, 16. cylinder body II, 17. return opening, 18, return tube, 19, piston.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of multi-level piston tension oil cylinder, described pull action cylinder has two group oil cylinders, and two groups of described cylinder structures are identical and be symmetrical arranged; Every group oil cylinder has a piston rod 1 and the some pistons that are positioned on described piston rod, consists of the multi-level piston structure of every group oil cylinder; In this embodiment, two pistons are set on the piston rod of every group oil cylinder, i.e. first piston 7, the second piston 14 consist of the two-stage piston structure of every group oil cylinder; The described piston of corresponding every one-level is provided with cylinder body, and namely corresponding first piston 7 arranges cylinder body I 8, and corresponding the second piston 14 arranges cylinder body II 16; Between piston and cylinder body, seal ring is set.Arrange between first piston 7 and cylinder body I 8 between seal ring II 5, the second pistons 14 and cylinder body II 16 seal ring IV 13 is set; Identical and the dead in line of the internal diameter of cylinder body I 8, cylinder body II 16; Cylinder body I 8, cylinder body II 16 connect by link and be provided with isolated component between cylinder body I 8, cylinder body II 16, and cylinder body I 8, cylinder body II 16 are divided into separately independently chamber; Described first piston 7, the second piston 14 lay respectively at one independently in chamber; In this embodiment, described link is clamping bolt II 12, described isolated component is spacer 10, described spacer 10 is for having the cylindrical body of center cavity, has the annular boss that is connected in order to cylinder body on cylindrical periphery, described annular boss and is integrally connected by clamping bolt II 12 and cylinder body I 8, cylinder body II 16 between cylinder body I 8, cylinder body II 16.Described piston rod 1 passes the center cavity of spacer 10, and between the center cavity of piston rod 1 and spacer 10, seal ring is set.Corresponding each independently chamber be respectively arranged with oil inlet pipe and return tube; In this embodiment, the chamber of corresponding first piston 7 arranges the first oil inlet pipe 6, return tube 18, and the chamber of corresponding the second piston 14 arranges the second oil inlet pipe 11; Two groups of described oil cylinders have shared chamber, described shared chamber is positioned at the binding site of two groups of described oil cylinder front ends, in every group oil cylinder, foremost piston all is arranged in and shares chamber, in this embodiment, wherein the first piston 7 in a group oil cylinder, the piston 19 in another group oil cylinder are arranged in and share chamber; Two groups of described oil cylinders have shared return opening 17, and described return opening 17 is communicated with described shared chamber.
during work, 4 oil inlet pipe while injection liquid force feeds promote 4 pistons, drive the mobile in opposite directions tightening force that produces of two piston rods, closely move in opposite directions simultaneously with the machinery equipment parts that are linked at respectively on piston rod, space between seal ring I 2 closed piston bars 1 and gland 4, space between seal ring II 5 sealing first pistons 7 and cylinder body I 8, spacer 10 connects with cylinder body I 8 and cylinder body II 16 partition that becomes the second piston 14 by clamping bolt II 12, space between seal ring III 9 closed piston bars 1 and spacer 10, space between seal ring IV 13 sealing the second pistons 14 and cylinder body II 16, the second piston 14 on the fastening piston rod 1 of tightening nut 15, first piston 7 adopts hot charging or is threaded with piston rod 1, clamping bolt I 3 is with gland 4 and the fastening one of cylinder body I 8, by 4 oil inlet pipes while injection liquid force feeds, promote 4 pistons, drive two piston rods and move inward in opposite directions the generation pulling force, thereby form a multi-level piston tension oil cylinder that produces powerful pulling force.
Data by pot type piston tension oil cylinder in following table and multi-level piston tension oil cylinder compare: at pulling force 100 ton hours, the cylinder diameter of pot type piston tension oil cylinder is 300mm, oil pressure 14Mpa, and the cylinder diameter of multi-level piston tension oil cylinder is 200mm, oil pressure 8Mpa; The cylinder diameter of pot type piston tension oil cylinder is 500mm, can realize 300 tons of pulling force during oil pressure 15Mpa, and the cylinder diameter of multi-level piston tension oil cylinder is 400mm, but can realize the pulling force of 500 tons during oil pressure 10Mpa, can demonstrate fully thus that multi-level piston tension oil cylinder volume is little, low fuel pressure, advantage that pulling force is large.
The data sheet of pot type piston tension oil cylinder and multi-level piston tension oil cylinder
﹙ annotates: these table data are not all calculated piston La Gan ﹚
In the embodiment who provides; multi-level piston tension oil cylinder of the present invention is 2 groups of 4 grades of piston structures; according to structural principle of the present invention; can expand to the multistage multi-level piston tension oil cylinder of many groups; the person skilled in art can realize that the multichannel oil-feed of a direction realizes the same tightening force of multi-level piston tension oil cylinder by improving hydraulic circuit; also belong to category of the present invention, all belong to the scope of protection of the invention.

Claims (7)

1. multi-level piston tension oil cylinder, it is characterized in that: described pull action cylinder has two group oil cylinders, and two groups of described cylinder structures are identical and be symmetrical arranged; Every group oil cylinder has a piston rod and the some pistons that are positioned on described piston rod, consists of the multi-level piston structure of every group oil cylinder; When work, the piston rod of two groups of described oil cylinders is move toward one another; The described piston of corresponding every one-level is provided with cylinder body, the identical and dead in line of the internal diameter of each cylinder body; Adjacent two cylinder bodies connect by link and be provided with isolated component between adjacent two cylinder bodies, and adjacent cylinders is divided into separately independently chamber; Each the described piston correspondence that is arranged on piston rod is positioned at an independently chamber; Corresponding each independently chamber be respectively arranged with oil inlet pipe, return tube; Two groups of described oil cylinders have shared chamber, and described shared chamber is positioned at the binding site of two groups of described oil cylinder front ends, and in every group of described oil cylinder, foremost piston all is arranged in and shares chamber; Two groups of described oil cylinders have shared return opening, and described return opening is communicated with described shared chamber, consist of multi-level piston tension oil cylinder.
2. according to multi-level piston tension oil cylinder claimed in claim 1, it is characterized in that: the piston that is positioned in every group oil cylinder on described piston rod is at least two.
3. according to multi-level piston tension oil cylinder claimed in claim 1, it is characterized in that: described isolated component has the center cavity that piston rod passes.
4. according to multi-level piston tension oil cylinder claimed in claim 1, it is characterized in that: described isolated component is the cylindrical body with center cavity, has the annular boss that is connected in order to cylinder body on the cylindrical periphery of isolated component, described annular boss and is integrally connected by clamping bolt and adjacent two cylinder bodies between adjacent two cylinder bodies.
5. according to multi-level piston tension oil cylinder claimed in claim 1, it is characterized in that: described isolated component has the center cavity that piston rod passes, described piston rod passes the described center cavity of isolated component, and between the center cavity of piston rod and isolated component, seal ring is set.
6. according to multi-level piston tension oil cylinder claimed in claim 1, it is characterized in that: described isolated component is spacer.
7. according to multi-level piston tension oil cylinder claimed in claim 1, it is characterized in that: between described piston and cylinder body, seal ring is set.
CN2013100991353A 2013-03-26 2013-03-26 Multistage-piston hydraulic tension oil cylinder Pending CN103148048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100991353A CN103148048A (en) 2013-03-26 2013-03-26 Multistage-piston hydraulic tension oil cylinder

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Application Number Priority Date Filing Date Title
CN2013100991353A CN103148048A (en) 2013-03-26 2013-03-26 Multistage-piston hydraulic tension oil cylinder

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CN103148048A true CN103148048A (en) 2013-06-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499692A (en) * 2016-09-23 2017-03-15 浙江农林大学 Two-way freely concatenate connecting rod cylinder

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101285490A (en) * 2008-06-13 2008-10-15 陈海泉 Tandem construction parallel reinforcement hydraulic cylinder
CN101865176A (en) * 2009-04-17 2010-10-20 北京金自天成液压技术有限责任公司 Bidirectional multi-action hydraulic cylinder with single piston rod
CN201666285U (en) * 2010-04-16 2010-12-08 奉化市鑫潮自动化元件有限公司 Serially connected square cylinder
CN202209329U (en) * 2011-08-17 2012-05-02 北京长宇利华液压系统工程设计有限公司 Double-piston-rod relative motion oil cylinder
CN102829015A (en) * 2012-09-26 2012-12-19 保定标正机床有限责任公司 Double-piston oil cylinder
CN203146472U (en) * 2013-03-26 2013-08-21 严瑞山 Multi-stage piston hydraulic tension oil cylinder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101285490A (en) * 2008-06-13 2008-10-15 陈海泉 Tandem construction parallel reinforcement hydraulic cylinder
CN101865176A (en) * 2009-04-17 2010-10-20 北京金自天成液压技术有限责任公司 Bidirectional multi-action hydraulic cylinder with single piston rod
CN201666285U (en) * 2010-04-16 2010-12-08 奉化市鑫潮自动化元件有限公司 Serially connected square cylinder
CN202209329U (en) * 2011-08-17 2012-05-02 北京长宇利华液压系统工程设计有限公司 Double-piston-rod relative motion oil cylinder
CN102829015A (en) * 2012-09-26 2012-12-19 保定标正机床有限责任公司 Double-piston oil cylinder
CN203146472U (en) * 2013-03-26 2013-08-21 严瑞山 Multi-stage piston hydraulic tension oil cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499692A (en) * 2016-09-23 2017-03-15 浙江农林大学 Two-way freely concatenate connecting rod cylinder
CN106499692B (en) * 2016-09-23 2017-12-19 浙江农林大学 It is two-way freely to concatenate connecting rod cylinder

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Application publication date: 20130612