CN102425584A - Three-stage hydraulic lifting cylinder of large mining dump truck - Google Patents
Three-stage hydraulic lifting cylinder of large mining dump truck Download PDFInfo
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- CN102425584A CN102425584A CN2011104245748A CN201110424574A CN102425584A CN 102425584 A CN102425584 A CN 102425584A CN 2011104245748 A CN2011104245748 A CN 2011104245748A CN 201110424574 A CN201110424574 A CN 201110424574A CN 102425584 A CN102425584 A CN 102425584A
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Abstract
The invention relates to a three-stage hydraulic lifting cylinder of a large mining dump truck. The three-stage hydraulic lifting cylinder comprises a first stage cylinder, wherein a movable second stage cylinder is arranged in the first stage cylinder, a movable third stage cylinder is arranged in the movable second stage cylinder, and a piston and a piston rod are arranged in the movable third stage cylinder; the first stage cylinder is connected with an upper lifting lug through a bolt; and the middle part of the movable third stage cylinder is provided with a buffer cavity communicated with an oil discharging channel, a buffer valve is arranged in the buffer cavity and is fixedly arranged on the upper lifting lug, and a ring-shaped clearance is arranged between the buffer valve and the piston rod. The three-stage hydraulic lifting cylinder has a simple structure, low manufacturing cost and a long service life, can be processed easily, can be installed, debugged and maintained conveniently, and can adapt to harsh working environments of engineering dump trucks. Moreover, the three-stage hydraulic lifting cylinder can operate stably and reliably.
Description
Technical field
The present invention relates to a kind of hydraulic lifting oil cylinder, relate in particular to three grades of hydraulic lifting oil cylinders of a kind of large-scale mine dumping car.
Background technique
Along with the growth of domestic and international mining amount, little tonnage automobile can't satisfy the transportation demand in mine, and quarry tipper develops towards the large-tonnage direction, and large-scale dumping car is big with its tonnage, and efficiency of loading is high and gain great popularity.The lifting cylinder is as the critical piece in the dumping car, and its effect is extremely important.Existing multistage cylinder is most, and promptly vat is pressed on the little cylinder in order to fall pyramidal structure, and the folded one-level of one-level forms " turriform ", and the structure of this multistage cylinder is comparatively complicated, and the manufacturing difficulty is big, poor reliability, and also weight is heavier, is unfavorable on the large-tonnage car, using.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of simple in structure, and the manufacturing difficulty is low, and functional reliability is high, three grades of hydraulic lifting oil cylinders of large-scale mine dumping car that weight is lighter.
The technical solution adopted for the present invention to solve the technical problems is: comprise the one-level cylinder barrel; Be provided with removable secondary cylinder barrel in the said one-level cylinder barrel; Be provided with removable three grades of cylinder barrels in the said removable secondary cylinder barrel; Be provided with piston and piston rod in said removable three grades of cylinder barrels, be provided with sealing gasket between said piston and the piston rod, and connect through bolt; The lower end endoporus of said one-level cylinder barrel, removable secondary cylinder barrel and removable three grades of cylinder barrels is provided with corresponding piston ring I, piston ring II and piston ring III; Be respectively equipped with the groove I on said piston ring I, piston ring II and the piston ring III, be provided with dust ring, Yx shape circle, square ring and supporting ring in the said groove I successively; Said one-level cylinder barrel links to each other with last hanger through bolt, and said going up between hanger and the one-level cylinder barrel is provided with the seal ring I; The upper end of said removable secondary cylinder barrel is provided with the groove II, is provided with the guide ring I in the said groove II; The upper end of said removable three grades of cylinder barrels is provided with the groove III, is provided with guide ring II and seal ring II in the said groove III; Said piston is provided with the groove IV, is provided with seal ring III and wear ring in the said groove IV; The middle part of said removable three grades of cylinder barrels is provided with the buffer cavity that is communicated with oil drain passage, is provided with the trimmer valve that is fixed on the hanger in the said buffer cavity, is provided with belt slit between said trimmer valve and the piston rod.
Further, on said removable secondary cylinder barrel and removable three grades of cylinder barrels are positioned at piston rod links to each other the base, and highly identical, the lower end surface of said removable secondary cylinder barrel and removable three grades of cylinder barrels is concordant with the lower end surface of one-level cylinder barrel.
Three grades of hydraulic lifting oil cylinders of the present invention's large-scale quarry tipper adopt telescoping structure, and compared with prior art, have the following advantages: (1) its single-stage cylinder structure is simple, in light weight, and the stroke of cylinder at the same level is longer; (2) since with last hanger that the one-level cylinder barrel connects on be fixed with trimmer valve, reach in removable three grades of cylinder barrels and be provided with buffer cavity, in use can play good buffer function; (3) used buffer structure is simple relatively, easy processing, low cost of manufacture; (4) functional reliability is high, and rate of fault is low, Installation and Debugging and easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structure enlarged diagram of A partial component embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
With reference to accompanying drawing; Present embodiment comprises one-level cylinder barrel 5; Be provided with removable secondary cylinder barrel 6 in the said one-level cylinder barrel 5, be provided with removable three grades of cylinder barrels 7 in the said removable secondary cylinder barrel 6, be provided with piston 4 and piston rod 8 in said removable three grades of cylinder barrels 7; Be provided with sealing gasket 3 between said piston 4 and the piston rod 8, and be fixedly connected through bolt 2; The lower end endoporus of said one-level cylinder barrel 5, removable secondary cylinder barrel 6 and removable three grades of cylinder barrels 7 is provided with corresponding piston ring I 24, piston ring II 25 and piston ring III 26; Be respectively equipped with the groove I on said piston ring I 24, piston ring II 25 and the piston ring III 26, be provided with dust ring 15, Yx shape circle 16, square ring 17 and supporting ring 18 in the said groove I successively; Said one-level cylinder barrel 5 links to each other with last hanger 1 through bolt 14, and said going up between hanger 1 and the one-level cylinder barrel 5 is provided with zero type shape seal ring 19; The upper end of said removable secondary cylinder barrel 6 is provided with the groove II, is provided with guide ring I 11 in the said groove II; The upper end of said removable three grades of cylinder barrels 7 is provided with the groove III, is provided with guide ring II 10 and seal ring 20 in the said groove III; Said piston 4 is provided with the groove IV, is provided with seal ring 13 and wear ring 12 in the said groove IV; The middle part of said removable three grades of cylinder barrels 7 is provided with the buffer cavity 21 that is communicated with oil drain passage 22, is provided with the trimmer valve 9 that is fixed on the hanger 1 in the said buffer cavity 21, and belt slit 23 is arranged between said trimmer valve 9 and the piston rod 8.
Said removable secondary cylinder barrel 6 is positioned on the base that links to each other with piston rod 8 with removable three grades of cylinder barrels 7, and highly identical, and the lower end surface of said removable secondary cylinder barrel 6 and removable three grades of cylinder barrels 7 is concordant with the lower end surface of one-level cylinder barrel 5.
When the wagon box lifting; The one-level cylinder barrel 5 first liftings that link to each other with last hanger 1; When one-level cylinder barrel 5 gave rise to range, the piston ring I 24 of lower end drove removable secondary cylinder barrel 6 liftings, when removable secondary cylinder barrel 6 gives rise to range; The piston ring II 25 of lower end drives removable three grades of cylinder barrel 7 liftings, until the 3rd joint cylinder is lifted range; When wagon box falls; Removable three grades of cylinder barrels 7 descend earlier under the effect of forced landing pressure, follow removable secondary cylinder barrel 6 and descend in the effect of forced landing pressure, and afterbody cylinder barrel 5 descends under the effect of gravity; When one-level cylinder barrel 5 drops to when last; The trimmer valve 9 that is contained on the hanger 1 gets in the piston rod 8, and the circulation area that makes trimmer valve 8 be communicated with oil drain passage 22 diminishes gradually, and this moment, trimmer valve 9 cut out; Fluid in the buffer cavity 21 is closed; The belt small gaps 23 that the oil return of lifting cylinder epicoele can only pass through to form in trimmer valve 9 and the piston rod 8 flow into the oil drain passage 22 of piston rods 8, wagon box is dropped on obtain before on the vehicle frame cushioning, thereby equipment is played the better protection effect.
Claims (2)
1. three grades of hydraulic lifting oil cylinders of a large-scale mine dumping car; It is characterized in that: comprise the one-level cylinder barrel; Be provided with removable secondary cylinder barrel in the said one-level cylinder barrel, be provided with removable three grades of cylinder barrels in the said removable secondary cylinder barrel, be provided with piston and piston rod in said removable three grades of cylinder barrels; Be provided with sealing gasket between said piston and the piston rod, and connect through bolt; The lower end endoporus of said one-level cylinder barrel, removable secondary cylinder barrel and removable three grades of cylinder barrels is provided with corresponding piston ring I, piston ring
and piston ring III; Be respectively equipped with one group of groove I on said piston ring I, piston ring II and the piston ring III, be provided with dust ring, Yx shape circle, square ring and supporting ring in the said groove I successively; Said one-level cylinder barrel links to each other with last hanger through bolt, and said going up between hanger and the one-level cylinder barrel is provided with the seal ring I; The upper end of said removable secondary cylinder barrel is provided with the groove II, is provided with the guide ring I in the said groove II; The upper end of said removable three grades of cylinder barrels is provided with one group of groove III, is provided with guide ring II and seal ring II in the said groove III; Said piston is provided with one group of groove IV, is provided with seal ring III and wear ring in the said groove IV; The middle part of said removable three grades of cylinder barrels is provided with the buffer cavity that is communicated with oil drain passage, is provided with the trimmer valve that is fixed on the hanger in the said buffer cavity, and belt slit is arranged between said trimmer valve and the piston rod.
2. three grades of hydraulic lifting oil cylinders of large-scale mine dumping car according to claim 1; It is characterized in that: on said removable secondary cylinder barrel and removable three grades of cylinder barrels are positioned at piston rod links to each other the base; And highly identical, the lower end surface of said removable secondary cylinder barrel and removable three grades of cylinder barrels is concordant with the lower end surface of one-level cylinder barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104245748A CN102425584A (en) | 2011-12-19 | 2011-12-19 | Three-stage hydraulic lifting cylinder of large mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104245748A CN102425584A (en) | 2011-12-19 | 2011-12-19 | Three-stage hydraulic lifting cylinder of large mining dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102425584A true CN102425584A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104245748A Pending CN102425584A (en) | 2011-12-19 | 2011-12-19 | Three-stage hydraulic lifting cylinder of large mining dump truck |
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| CN (1) | CN102425584A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767548A (en) * | 2012-07-26 | 2012-11-07 | 三一矿机有限公司 | Multi-stage hydraulic cylinder and mining self-dumping truck |
| CN102975729A (en) * | 2012-12-07 | 2013-03-20 | 苏州蓝王机床工具科技有限公司 | Buffer mechanism |
| CN103671348A (en) * | 2013-12-17 | 2014-03-26 | 湘电重型装备有限公司 | Lifting hydraulic oil cylinder of mining dump truck |
| CN105257621A (en) * | 2015-10-14 | 2016-01-20 | 航天重型工程装备有限公司 | Multi-stage lifting cylinder with hydraulic buffer function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2361893Y (en) * | 1998-10-26 | 2000-02-02 | 中国汽车工业总公司重庆汽车研究所 | Fuel contents controllable multi-stage hydraulic cylinder |
| CN201496340U (en) * | 2009-08-13 | 2010-06-02 | 湘电重型装备股份有限公司 | Multi-stage hydraulic cylinder with damping device of mining dumping truck, |
| CN202348826U (en) * | 2011-12-19 | 2012-07-25 | 湘电重型装备股份有限公司 | Three-stage hydraulic lifting oil cylinder for large-scale mining dump truck |
| CN102767548A (en) * | 2012-07-26 | 2012-11-07 | 三一矿机有限公司 | Multi-stage hydraulic cylinder and mining self-dumping truck |
-
2011
- 2011-12-19 CN CN2011104245748A patent/CN102425584A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2361893Y (en) * | 1998-10-26 | 2000-02-02 | 中国汽车工业总公司重庆汽车研究所 | Fuel contents controllable multi-stage hydraulic cylinder |
| CN201496340U (en) * | 2009-08-13 | 2010-06-02 | 湘电重型装备股份有限公司 | Multi-stage hydraulic cylinder with damping device of mining dumping truck, |
| CN202348826U (en) * | 2011-12-19 | 2012-07-25 | 湘电重型装备股份有限公司 | Three-stage hydraulic lifting oil cylinder for large-scale mining dump truck |
| CN102767548A (en) * | 2012-07-26 | 2012-11-07 | 三一矿机有限公司 | Multi-stage hydraulic cylinder and mining self-dumping truck |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767548A (en) * | 2012-07-26 | 2012-11-07 | 三一矿机有限公司 | Multi-stage hydraulic cylinder and mining self-dumping truck |
| CN102975729A (en) * | 2012-12-07 | 2013-03-20 | 苏州蓝王机床工具科技有限公司 | Buffer mechanism |
| CN103671348A (en) * | 2013-12-17 | 2014-03-26 | 湘电重型装备有限公司 | Lifting hydraulic oil cylinder of mining dump truck |
| CN105257621A (en) * | 2015-10-14 | 2016-01-20 | 航天重型工程装备有限公司 | Multi-stage lifting cylinder with hydraulic buffer function |
| CN105257621B (en) * | 2015-10-14 | 2017-08-25 | 航天重型工程装备有限公司 | A kind of multistage load lifting cylinder for possessing hydraulic cushion function |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 411101 Hunan Province, Xiangtan City, the Department of the next street, No. 302 Applicant after: Hunan Electric Heavy Equipment Co., Ltd. Address before: 411101 Hunan Province, Xiangtan City, the Department of the next street, No. 302 Applicant before: Xiangdian Heavy Equipment Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: XIANGTAN ELECTRIC MANUFACTURING GROUP CO., LTD. TO: XIANGDIAN HEAVY EQUIPMENT CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120425 |