CN201615111U - Single-acting shared rod type cylinder with two groups and multi-stage sleeves - Google Patents
Single-acting shared rod type cylinder with two groups and multi-stage sleeves Download PDFInfo
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- CN201615111U CN201615111U CN2010201351712U CN201020135171U CN201615111U CN 201615111 U CN201615111 U CN 201615111U CN 2010201351712 U CN2010201351712 U CN 2010201351712U CN 201020135171 U CN201020135171 U CN 201020135171U CN 201615111 U CN201615111 U CN 201615111U
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Abstract
The utility model provides a single-acting shared rod type cylinder with two groups and multi-stage sleeves, which comprises a cylinder bottom, cylinder barrels, series piston type sleeves and a final-stage plunger rod. The series piston type sleeves are mutually embedded and mounted inside the cylinder barrels; the cylinder bottom is mounted at two ends of the cylinder; the cylinder barrels and a combination of the series piston type sleeves are divided into two groups; the two groups of cylinder barrels are connected with the combination of the series piston type sleeves in series through the final-state plunger rod and respectively mounted at two ends of the final-state plunger rod; piston type structures are formed at two ends of the final-state plunger rod; an oil hole for communicating two ends is formed inside the final-state plunger rod; and an oil guide groove is formed on the excicle surface of a piston part of the final-stage plunger rod. The cylinder has the advantages of symmetrical structures at two ends, better inside supporting and guiding property, shorter stroke of the sleeves of all stages of the cylinder, good rigidity and strong non-deformability, thereby facilitating the extension of the service life.
Description
Technical field
The utility model relates to a kind of hydraulic jack that is mainly used in dump truck and other engineering machinery hydraulic hoisting system, specifically relates to a kind of single-acting multistage sleeve oil cylinder of the two groups of rod-type altogether.
Background technique
Our multistage sleeve oil cylinder of single-acting of seeing at present is by one group of piston type sleeve that can move successively and the final stage plunger rod is mutually nested constitutes.The total kilometres of oil cylinder are shared by every grade of sleeve and final stage plunger rod, and oil cylinder stroke is long more, and sleeve is also long more, its processing technology difficulty increases, and when the oil cylinder total travel, the whole anti-bending strength of oil cylinder also can decrease simultaneously, easily produce bending deflection, so that oil cylinder bounces back, stretches out difficulty, hair fastener.Therefore the existing market up stroke reaches the above multistage sleeve oil cylinder of single-acting of 3500mm, and using effect is difficult to reach expection, and price is also higher.
Summary of the invention
The purpose of this utility model provides the altogether multistage sleeve oil cylinder of the two groups of rod-type of a kind of single-acting, and its structure more is tending towards rationally, whole anti-bending strength that can lift cylinder, the difficulty of processing of reduction oil cylinder.
In order to solve the problems of the technologies described above, the utility model provides two kinds of technological schemes.
Scheme one: a kind of single-acting is the multistage sleeve oil cylinder of the two groups of rod-type altogether, it comprises cylinder bottom, cylinder barrel, series piston type sleeve, the final stage plunger rod, the mutually nested cylinder barrel inside that is installed in of described serial piston type sleeve, on the external cylindrical surface of every grade of sleeve and final stage plunger rod piston portion piston guided bearing ring is installed all, on the inner cylindrical surface of every grade of sleeve and cylinder barrel one end piston rod guided bearing ring is installed all, seal ring, dust ring, cylinder bottom is installed in the two ends of oil cylinder, it is characterized in that: the combination of described cylinder barrel and sleeve is divided into two groups, the combination of two groups of cylinder barrels and sleeve is cascaded by the final stage plunger rod, the combination of two groups of cylinder barrels and sleeve is installed in the two ends of final stage plunger rod respectively, the final stage plunger rod is the two ends piston cylinder operator, final stage plunger rod inside is provided with the oilhole that is communicated with two ends, has oil guide slot vertically on the periphery of final stage plunger rod piston portion.
A kind of improvement to technique scheme: the oilhole diameter that described final stage plunger rod is communicated with two ends is 8～30mm.
A kind of improvement to technique scheme: on the periphery of described final stage plunger rod piston portion vertically symmetry have 2～3, width is that 3～10mm, the degree of depth are the oil guide slot of 5-10mm.
Another step to technique scheme improves: be drilled with 2～3 of the oil throughs that diameter is 3～10mm at every grade of sleeve near the wall upper edge radial symmetric of piston region.
To further improvement in the technical proposal: the piston portion of described final stage plunger rod one end is connected with bar portion by screw thread.
Scheme two: a kind of single-acting is the multistage sleeve oil cylinder of the two groups of rod-type altogether, it comprises cylinder bottom, cylinder barrel, series piston type sleeve, the final stage plunger rod, the mutually nested cylinder barrel inside that is installed in of described serial piston type sleeve, on the external cylindrical surface of every grade of sleeve and final stage plunger rod piston portion piston guided bearing ring is installed all, on the inner cylindrical surface of every grade of sleeve and cylinder barrel one end piston rod guided bearing ring is installed all, seal ring, dust ring, cylinder bottom is installed in the two ends of oil cylinder, it is characterized in that: the combination of described cylinder barrel and sleeve is divided into two groups, the combination of two groups of cylinder barrels and sleeve is cascaded by the final stage plunger rod, the combination of two groups of cylinder barrels and sleeve is installed in the two ends of final stage plunger rod respectively, the final stage plunger rod is the two ends piston cylinder operator, final stage plunger rod inside is provided with the oilhole that is communicated with two ends, and final stage plunger rod and every grade of sleeve radially are drilled with corresponding oil through near on the wall of piston region.
A kind of improvement to technique scheme: the oilhole diameter that described final stage plunger rod is communicated with two ends is 8～30mm;
A kind of improvement to technique scheme: be drilled with 2～3 of the oil throughs that diameter is 3～10mm near the wall upper edge radial symmetric of piston region at every grade of sleeve and final stage plunger rod;
To further improvement in the technical proposal: the piston portion of described final stage plunger rod one end is connected with bar portion by screw thread.
Beneficial effect:
Use the altogether multistage sleeve oil cylinder of the two groups of rod-type of a kind of single-acting described in the utility model, on the external cylindrical surface of the piston portion of every grade of sleeve of oil cylinder and final stage plunger rod, general standard piston guided bearing ring is installed; Bore radially oil through by position on the wall of final stage plunger rod and every grade of sleeve near piston, or the measure of on the periphery of final stage plunger rod piston portion, opening oil groove vertically, make formed each final and pressure oil communication of rod chamber of final stage plunger rod and every grade of sleeve, remove entrap phenomenon because of oil district oil circuit.This kind technological scheme, rational in infrastructure, technology is succinct, has utilized ripe universal standard part simultaneously again, and standardization level improves, and is beneficial to reduce cost.
Simultaneously, compare with the ordinary cartridge oil cylinder of present identical on the market stroke, same progression, its oil cylinder stroke is born jointly by two groups of mutually nested sleeves and final stage plunger rod element, the stroke of sharing on every grade of sleeve shortens half, therefore the length dimension of cylinder barrel and sleeves at different levels shortens greatly, the processing technology difficulty descends, and precision is easy to guarantee, is fit to low-cost input, produces in enormous quantities.
Secondly, compare with the ordinary cartridge oil cylinder of present identical on the market cylinder diameter, same progression, during oil cylinder work, pressure oil acts on two groups of mutually nested sleeves and the final stage plunger rod element simultaneously, thereby the output strength of oil cylinder is bigger.
And oil cylinder described in the utility model has the two-end structure symmetry properties, and its inner support, guidance quality are better, and the cover barrel strokes at different levels of oil cylinder are shorter relatively, and the oil cylinder integral rigidity is good, and non-deformability is strong, is beneficial to improve oil cylinder working life.
Description of drawings
Fig. 1 partly cuts open schematic representation (scheme one) for three grades of sleeve oil cylinders of the two groups of the common rod-type of the utility model example one;
Fig. 2 is the local enlarged diagram of the C part among Fig. 1;
Fig. 3 partly cuts open schematic representation for the final stage plunger rod 5 among Fig. 1;
Fig. 4 is the E-E sectional schematic diagram among Fig. 3;
Fig. 5 is the F-F sectional schematic diagram among Fig. 3;
Fig. 6 partly cuts open schematic representation (scheme two) for three grades of sleeve oil cylinders of the two groups of the common rod-type of the utility model example two;
Fig. 7 is the local enlarged diagram of the C part among Fig. 6;
Fig. 8 partly cuts open schematic representation for the final stage plunger rod 5 among Fig. 6;
Fig. 9 is the E-E sectional schematic diagram among Fig. 8;
Among the figure: earrings cylinder bottom 1, cylinder barrel 2, one-level sleeve 3, two-level sleeve 4, final stage plunger rod 5, be that piston rod is used to supporting ring 6, serial seal ring 7, serial dust ring 8, hinging shaft 9, cylinder bottom 10, serial piston with guided bearing ring 11, serial Steel Cable Baffle Ring 12, shutoff 13, piston 14, final stage plunger rod main body 15, oil pipe 16, Cock screw 17, oil-feed cylinder bottom 18.
Embodiment
One, the utility model patent example one:
This instances conform technological scheme one, as Fig. 1, Fig. 2, be three grades of sleeve oil cylinders of the two groups of a kind of altogether rod-type, it comprise earrings cylinder bottom 1, cylinder barrel 2, one-level sleeve 3, two-level sleeve 4, final stage plunger rod 5, serial piston rod with guided bearing ring 6, serial seal ring 7, serial dust ring 8, hinging shaft 9, cylinder bottom 10, serial piston with guided bearing ring 11, serial Steel Cable Baffle Ring 12; Described sequence number is that 6,7,8,11,12 part is corresponding universal standard part, and its structure, function and usage requirement etc. all have corresponding industry, NBS can be for reference, therefore is not further elaborated here.
1) structure of this example oil cylinder:
As Fig. 1, the number of spare parts of cylinder barrel 2 and one-level sleeve 3, two-level sleeve 4 is two in the described example, two groups of mutually nested compositions, be set in the two ends of final stage plunger rod 5, common three grades of sleeve cylinder structures of each group and final stage plunger rod 5 common compositions, because two such same structures are arranged on this hydraulic cylinder assembly, be cascaded by shared final stage plunger rod 5, so be called three grades of sleeve oil cylinders of the two groups of common rod-type;
In order to prevent that entrap phenomenon appears in the rod chamber at final stage plunger rod and every grade of sleeve in the oil cylinder working procedure, as Fig. 2, position near piston on every grade of sleeve wall is drilled with accordingly radially oil through A1, A2, on the periphery of final stage plunger rod 5 piston portions, have oil guide slot A3 vertically, the oil circuit and the pressure oil P in each pocketed oil district are linked up, remove entrap phenomenon, the detailed structure of oil guide slot A3 is referring to Fig. 3, Fig. 4, Fig. 5;
The structure of final stage plunger rod 5 such as Fig. 3, Fig. 4, shown in Figure 5, final stage plunger rod main body 15 is made for thick-walled seamless steel pipes, there is shutoff 13 at two ends, core is communicated with two ends by the oil pipe 16 of a suitable internal diameter Φ d1, oil pipe 16 is selected the special-purpose seamless steel pipe of hydraulic pressure for use, part 13,15,16 methods by welding constitute an integral body, because of the final stage plunger rod is the two ends piston cylinder operator, for realizing the possibility of hydraulic cylinder assembly assembling, the piston 14 of one end is made the demountable structure of nut type, by with final stage plunger rod main body 15 on corresponding screw thread Md connect, and using Cock screw 17 locking in the radial direction, on the periphery of final stage plunger rod 5 piston portions vertically symmetry have three oil guide slot;
As Fig. 1, on cylinder bottom 10, venting plug is installed, in use get rid of the oil cylinder inner air to make things convenient for oil cylinder.
2) this example oil cylinder working procedure:
As Fig. 1, after pressure oil P enters oil cylinder inside by the filler opening on the earrings cylinder bottom 1, also pass through simultaneously the other end that final stage plunger rod 5 core oilhole A4 (as Fig. 2) arrive oil cylinder, when oil pressure P surpassed the oil cylinder load, the one-level sleeve 3 at oil cylinder two ends stretched out simultaneously, after its stroke is ended, two-level sleeve 4, final stage final stage plunger rod 5 stretch out successively again, when external force during greater than the oil cylinder internal oil pressure, oil cylinder retraction, retraction process is opposite with the process of stretching out.
3) this example oil cylinder is installed connecting mode:
As Fig. 1, oil cylinder is installed an end and is adopted the earrings pattern, and the joint ball bearing is housed in the earrings on the earrings cylinder bottom 1; The other end adopts the hinge pattern, and hinging shaft 9 is welded at the outer wall of cylinder barrel 2, forms rigid unitary with cylinder barrel.
Two, the utility model patent working example two
This instances conform technological scheme two as Fig. 6, also is three grades of sleeve oil cylinders of the two groups of a kind of altogether rod-type, and main structure, working principle are identical with previous examples one, and difference is:
1) structure of final stage plunger rod 5 in this example oil cylinder, as Fig. 7, Fig. 8, shown in Figure 9, final stage plunger rod main body 15 is made for thick-walled seamless steel pipes, its internal diameter Φ d1 is suitable as the oilhole A4 that is communicated with two ends just and uses, at this moment, bore radially oil through A5 at the final stage plunger rod near on the wall of piston region, together with on every grade of sleeve wall, boring accordingly radially oil through A1, A2, the oil circuit and the pressure oil P in each pocketed oil district in the oil cylinder are linked up, removed entrap phenomenon, therefore in this example, need not on the periphery of final stage plunger rod 5 piston portions, convince oil groove vertically by patient analysis;
2) this example oil cylinder is installed connecting mode, and as Fig. 6, oil cylinder is installed two ends and all adopted the hinge pattern, and hinging shaft 9 is welded at the outer wall of cylinder barrel 2, forms rigid unitary with cylinder barrel, and the earrings cylinder bottom 1 in the historical facts or anecdotes example one (Fig. 1) becomes oil-feed cylinder bottom 18 in this example.
The foregoing description is not to restriction of the present utility model; the utility model also is not limited only to above-mentioned giving an example; variation, improvement, interpolation or replacement that present technique field related personnel is made in essential scope of the present utility model also belong to protection domain of the present utility model.
Claims (8)
1. a single-acting is total to the multistage sleeve oil cylinder of the two groups of rod-type, it comprises cylinder bottom, cylinder barrel, series piston type sleeve, the final stage plunger rod, the mutually nested cylinder barrel inside that is installed in of described serial piston type sleeve, cylinder bottom is installed in the two ends of oil cylinder, it is characterized in that: the combination of described cylinder barrel and serial piston type sleeve is divided into two groups, the combination of two groups of cylinder barrels and serial piston type sleeve is cascaded by the final stage plunger rod, the combination of two groups of cylinder barrels and serial piston type sleeve is installed in the two ends of final stage plunger rod respectively, the two ends of final stage plunger rod are equipped with piston cylinder operator, final stage plunger rod inside is provided with the oilhole that is communicated with two ends, and the periphery upper edge of final stage plunger rod piston portion is axially arranged with oil guide slot.
2. a kind of single-acting according to claim 1 is the multistage sleeve oil cylinder of the two groups of rod-type altogether, and it is characterized in that: the oilhole diameter at described final stage plunger rod internal communication two ends is 8～30mm.
3. a kind of single-acting according to claim 1 is the multistage sleeve oil cylinder of the two groups of rod-type altogether, and it is characterized in that: be arranged with 2～3 vertically on the periphery of described final stage plunger rod piston portion, width is that 3～8mm, the degree of depth are the oil guide slot of 5-10mm.
4. be total to the multistage sleeve oil cylinder of the two groups of rod-type according to claim 1 or 2 or 3 described a kind of single-actings, it is characterized in that: the piston portion of described final stage plunger rod one end is connected with bar portion by screw thread.
5. a single-acting is total to the multistage sleeve oil cylinder of the two groups of rod-type, it comprises cylinder bottom, cylinder barrel, series piston type sleeve, the final stage plunger rod, the mutually nested cylinder barrel inside that is installed in of described serial piston type sleeve, cylinder bottom is installed in the two ends of oil cylinder, it is characterized in that: the combination of described cylinder barrel and serial piston type sleeve is divided into two groups, the combination of two groups of cylinder barrels and serial piston type sleeve is cascaded by the final stage plunger rod, the combination of two groups of cylinder barrels and serial piston type sleeve is installed in the two ends of final stage plunger rod respectively, the two ends of final stage plunger rod are equipped with piston cylinder operator, final stage plunger rod inside is provided with the oilhole that is communicated with two ends, and every grade of sleeve and final stage plunger rod radially are provided with corresponding oil through near on the wall of piston region.
6. a kind of single-acting according to claim 5 is the multistage sleeve oil cylinder of the two groups of rod-type altogether, and it is characterized in that: the oilhole diameter at described final stage plunger rod internal communication two ends is 8～30mm.
7. a kind of single-acting according to claim 5 is the multistage sleeve oil cylinder of the two groups of rod-type altogether, it is characterized in that: the oil through that it is 3～10mm that the wall upper edge radial symmetric of the close piston region of described every grade of sleeve and final stage plunger rod is provided with 2～3 diameters.
8. be total to the multistage sleeve oil cylinder of the two groups of rod-type according to claim 5 or 6 or 7 described a kind of single-actings, it is characterized in that: the piston portion of described final stage plunger rod one end is connected with bar portion by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201351712U CN201615111U (en) | 2010-03-12 | 2010-03-12 | Single-acting shared rod type cylinder with two groups and multi-stage sleeves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201351712U CN201615111U (en) | 2010-03-12 | 2010-03-12 | Single-acting shared rod type cylinder with two groups and multi-stage sleeves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615111U true CN201615111U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201351712U Expired - Fee Related CN201615111U (en) | 2010-03-12 | 2010-03-12 | Single-acting shared rod type cylinder with two groups and multi-stage sleeves |
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| Country | Link |
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| CN (1) | CN201615111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397442A (en) * | 2018-05-09 | 2018-08-14 | 湖北佳恒科技股份有限公司 | A kind of new structural preset type hydraulic cylinder |
| CN109179250A (en) * | 2018-10-28 | 2019-01-11 | 江苏迪普马液压科技有限公司 | A kind of big stroke combination hydraulic jacking cylinder |
-
2010
- 2010-03-12 CN CN2010201351712U patent/CN201615111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397442A (en) * | 2018-05-09 | 2018-08-14 | 湖北佳恒科技股份有限公司 | A kind of new structural preset type hydraulic cylinder |
| CN109179250A (en) * | 2018-10-28 | 2019-01-11 | 江苏迪普马液压科技有限公司 | A kind of big stroke combination hydraulic jacking cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20160312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |