CN203146472U - Multi-stage piston hydraulic tension oil cylinder - Google Patents

Multi-stage piston hydraulic tension oil cylinder Download PDF

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Publication number
CN203146472U
CN203146472U CN 201320140806 CN201320140806U CN203146472U CN 203146472 U CN203146472 U CN 203146472U CN 201320140806 CN201320140806 CN 201320140806 CN 201320140806 U CN201320140806 U CN 201320140806U CN 203146472 U CN203146472 U CN 203146472U
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China
Prior art keywords
cylinder
piston
oil
hydraulic pressure
pull action
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CN 201320140806
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Chinese (zh)
Inventor
严瑞山
朱壮连
王振国
郭鹏
郝清勇
何利峰
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LUOYANG SHUANGYONG MACHINE MANUFACTURING CO LTD
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LUOYANG SHUANGYONG MACHINE MANUFACTURING CO LTD
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Abstract

The utility model belongs to hydraulic tension oil cylinders, and mainly relates to a multi-stage piston hydraulic tension oil cylinder. The multi-stage piston hydraulic tension oil cylinder is provided with two sets of oil cylinders, and the two sets of oil cylinders are the same in structure and arranged symmetrically. Each set of oil cylinder is provided with a piston rod and a plurality of pistons which are located on the piston rod, and the piston rod and the pistons form a multi-stage piston structure of each set of oil cylinder. During work, the two sets of oil cylinders move oppositely. A cylinder body is arranged corresponding to each stage of the pistons, the inner diameters of the cylinder bodies are the same and the axes of the cylinder bodies are overlapped. Each two adjacent cylinder bodies are connected through a connecting piece and an isolating element is arranged between the two adjacent cylinder bodies to separate the adjacent cylinder bodies into independent cavities. Each piston located on the piston rods corresponds to one independent cavity. Due to the fact that the technical scheme is adopted, the multi-stage hydraulic tension oil cylinder has the advantages of being large in tension, small in size, low in oil pressure and low in steel material consumption.

Description

Multi-level piston hydraulic pressure pull action cylinder
Technical field
The utility model belongs to the hydraulic pressure pull action cylinder, relates generally to a kind of multi-level piston hydraulic pressure pull action cylinder; Two parts tension or controls that spacing is far away on the machinery equipment, parts can only inwardly closely be moved by tightening force in opposite directions.
Background technique
Existing hydraulic pressure pull action cylinder will realize that big pulling force can only realize by the pressure that increases cylinder diameter, piston and raising hydraulic oil, because cylinder diameter, piston are very big, certainly will will consume a lot of steel; The hydraulic fluid pressure height, high oil sealing and the Sealing of service property (quality) is bound to; Pipeline, valve and hydraulic services be often because hydraulic fluid pressure is high takes place to leak and pressure descends, and causes the machine cisco unity malfunction that breaks down, and influences production and carry out smoothly.
Summary of the invention
The purpose of this utility model proposes a kind of multi-level piston hydraulic pressure pull action cylinder at existing deficiency in the above-mentioned prior art just.
The utility model realizes that its goal of the invention takes following technical proposals:
Multi-level piston hydraulic pressure pull action cylinder of the present utility model, 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 the described piston rod, constitutes 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 each grade 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 independent cavity separately; Each the described piston correspondence that is arranged on the piston rod is positioned at an independent cavity; Corresponding each independent cavity is 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, foremost piston all is arranged in and shares chamber in every group of described oil cylinder, two groups of described oil cylinders have shared return opening, described return opening is communicated with described shared chamber, constitutes multi-level piston hydraulic pressure pull action cylinder.
Multi-level piston hydraulic pressure pull action cylinder of the present utility model, the piston that is positioned in every group oil cylinder on the described piston rod is at least two.
Multi-level piston hydraulic pressure pull action cylinder of the present utility model, described isolated component has the center cavity that piston rod passes.
Multi-level piston hydraulic pressure pull action cylinder of the present utility model, described isolated component is the cylindrical body with center cavity, has the annular boss that is connected in order to cylinder body at the cylindrical periphery of isolated component, described annular boss and is connected one by clamping bolt with adjacent two cylinder bodies between adjacent two cylinder bodies.
Multi-level piston hydraulic pressure pull action cylinder of the present utility model, 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 hydraulic pressure pull action cylinder of the present utility model, described isolated component is spacer.
Multi-level piston hydraulic pressure pull action cylinder of the present utility model arranges seal ring between described piston and the cylinder body.
The beneficial effects of the utility model are as follows:
A kind of multi-level piston hydraulic pressure pull action cylinder that the utility model proposes is taked technique scheme, has that pulling force is big, 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 utility model.
Among the figure; 1. piston rod I, 2. seal ring I, 3. clamping bolt I, 4. gland, 5. seal ring II, 6. first oil inlet pipe, 7. first piston, 8. cylinder body I, 9. seal ring III, 10. spacer, 11. second oil inlet pipe, 12. clamping bolt II, 13. seal ring IV, 14. second piston, 15. tightening nuts, 16. cylinder body II, 17. return opening, 18, return tube, 19, piston.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, a kind of multi-level piston hydraulic pressure pull action 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 the described piston rod, constitutes the multi-level piston structure of every group oil cylinder; Among this embodiment, two pistons are set on the piston rod of every group oil cylinder, i.e. first piston 7, second piston 14 constitute the two-stage piston structure of every group oil cylinder; The described piston of corresponding each grade is provided with cylinder body, and namely corresponding first piston 7 arranges cylinder body I 8, and corresponding second piston 14 arranges cylinder body II 16; Between piston and cylinder body, seal ring is set.Arrange between first piston 7 and the cylinder body I 8 between seal ring II 5, the second pistons 14 and the 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 independent cavity separately; Described first piston 7, second piston 14 lay respectively in the independent cavity; Among 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 at cylindrical periphery, described annular boss and is connected one with cylinder body I 8, cylinder body II 16 by clamping bolt II 12 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 independent cavity is respectively arranged with oil inlet pipe and return tube; Among this embodiment, the chamber of corresponding first piston 7 arranges first oil inlet pipe 6, return tube 18, and the chamber of corresponding second piston 14 arranges 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, foremost piston all is arranged in and shares chamber in every group oil cylinder, among this embodiment, wherein the first piston 7 in the 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 pipes inject hydraulic oil simultaneously, promote 4 pistons, drive the mobile in opposite directions tightening force that produces of two piston rods, and are closely mobile in opposite directions simultaneously with the machinery equipment parts that are linked at respectively on the piston rod; Space between seal ring I 2 closed piston bars 1 and the gland 4, space between seal ring II 5 sealing first pistons 7 and the cylinder body I 8, spacer 10 connects the partition that becomes second piston 14 by clamping bolt II 12 with cylinder body I 8 and cylinder body II 16, space between seal ring III 9 closed piston bars 1 and the spacer 10, space between seal ring IV 13 sealing second pistons 14 and the cylinder body II 16, second piston 14 on the tightening nut 15 fastening piston rods 1, first piston 7 adopts hot charging with piston rod 1 or is threaded, clamping bolt I 3 is with gland 4 and cylinder body I 8 fastening one, inject hydraulic oil simultaneously by 4 oil inlet pipes, promote 4 pistons, drive two piston rods and move inward the generation pulling force in opposite directions, thereby form a multi-level piston hydraulic pressure pull action cylinder that produces powerful pulling force.
Data by pot type piston hydraulic pressure pull action cylinder in the following table and multi-level piston hydraulic pressure pull action cylinder compare: at pulling force 100 ton hours, the cylinder diameter of pot type piston hydraulic pressure pull action cylinder is 300mm, oil pressure 14Mpa, and the cylinder diameter of multi-level piston hydraulic pressure pull action cylinder is 200mm, oil pressure 8Mpa; The cylinder diameter of pot type piston hydraulic pressure pull action cylinder is 500mm, can realize 300 tons of pulling force during oil pressure 15Mpa, and the cylinder diameter of multi-level piston hydraulic pressure pull action cylinder is 400mm, but can realize 500 tons pulling force during oil pressure 10Mpa, can demonstrate fully thus that multi-level piston hydraulic pressure pull action cylinder volume is little, low fuel pressure, advantage that pulling force is big.
The data sheet of pot type piston hydraulic pressure pull action cylinder and multi-level piston hydraulic pressure pull action cylinder
﹙ annotates: these table data are not all calculated piston La Gan ﹚
Among the embodiment who provides; the utility model multi-level piston hydraulic pressure pull action cylinder is 2 groups of 4 grades of piston structures; according to structural principle of the present utility model; can expand to the multistage multi-level piston hydraulic pressure pull action 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 hydraulic pressure pull action cylinder by improving hydraulic circuit; also belong to the utility model category, all belong to the scope of the utility model protection.

Claims (7)

1. multi-level piston hydraulic pressure pull action 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 the described piston rod, constitutes the multi-level piston structure of every group oil cylinder; The piston rod of two groups of described oil cylinders is the structure of move toward one another when work; The described piston of corresponding each grade 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 independent cavity separately; Each the described piston correspondence that is arranged on the piston rod is positioned at an independent cavity; Corresponding each independent cavity is 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 foremost piston all is arranged in and shares chamber in every group of described oil cylinder; Two groups of described oil cylinders have shared return opening, and described return opening is communicated with described shared chamber, constitute multi-level piston hydraulic pressure pull action cylinder.
2. according to the described multi-level piston hydraulic pressure of claim 1 pull action cylinder, it is characterized in that: the piston that is positioned in every group oil cylinder on the described piston rod is at least two.
3. according to the described multi-level piston hydraulic pressure of claim 1 pull action cylinder, it is characterized in that: described isolated component has the center cavity that piston rod passes.
4. according to the described multi-level piston hydraulic pressure of claim 1 pull action cylinder, 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 at the cylindrical periphery of isolated component, described annular boss and is connected one by clamping bolt with adjacent two cylinder bodies between adjacent two cylinder bodies.
5. according to the described multi-level piston hydraulic pressure of claim 1 pull action cylinder, 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 the described multi-level piston hydraulic pressure of claim 1 pull action cylinder, it is characterized in that: described isolated component is spacer.
7. according to the described multi-level piston hydraulic pressure of claim 1 pull action cylinder, it is characterized in that: between described piston and the cylinder body seal ring is set.
CN 201320140806 2013-03-26 2013-03-26 Multi-stage piston hydraulic tension oil cylinder Active CN203146472U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320140806 CN203146472U (en) 2013-03-26 2013-03-26 Multi-stage piston hydraulic tension oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320140806 CN203146472U (en) 2013-03-26 2013-03-26 Multi-stage piston hydraulic tension oil cylinder

Publications (1)

Publication Number Publication Date
CN203146472U true CN203146472U (en) 2013-08-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148048A (en) * 2013-03-26 2013-06-12 严瑞山 Multistage-piston hydraulic tension oil cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148048A (en) * 2013-03-26 2013-06-12 严瑞山 Multistage-piston hydraulic tension oil cylinder

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