CN103629189A - Double-acting oil cylinder with an adjustable buffering effect - Google Patents
Double-acting oil cylinder with an adjustable buffering effect Download PDFInfo
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- CN103629189A CN103629189A CN201310677717.5A CN201310677717A CN103629189A CN 103629189 A CN103629189 A CN 103629189A CN 201310677717 A CN201310677717 A CN 201310677717A CN 103629189 A CN103629189 A CN 103629189A
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Abstract
A double-acting oil cylinder with an adjustable buffering effect comprises a cylinder barrel; a guide sleeve and a cylinder bottom are arranged at the two ends of the cylinder barrel respectively; the double-acting oil cylinder further comprises a piston rod; the piston rod penetrates into the cylinder barrel from a middle through hole of the guide sleeve; a piston is arranged at the end part, in the cylinder barrel, of the piston rod; a valve block is arranged on the cylinder barrel and close to an end where a rod chamber is arranged; two oil inlet passages communicated with the inside of the cylinder barrel are arranged on the valve block; two parallel oil passages communicated with the two oil inlet passages are further arranged on the valve block, wherein a non-return valve is arranged at one end of the first oil passage, an external oil pipe is arranged at the other end of the first oil passage, a speed-limiting valve is arranged at one end of the second oil passage, and the other end of the second oil passage is a closed end. When a fork truck is used for loading, the buffering effect of the oil cylinder can be adjusted according to the on-site buffering effect or the requirements of a customer, so as to ensure that heavies can rise and fall reposefully.
Description
Technical field
The present invention relates to a kind of two-way cylinder, particularly a kind of double-action cushion cylinder of adjustable cushioning effect.
Background technique
At present, conventional double-action cushion cylinder, seldom has adjustable buffer structure, generally adopts buffer shaft nested structure.While adopting said structure, have following defect: one, buffer gap is unadjustable, flexibility is inadequate; Two, the design of buffer structure hour, can not be realized in the space between piston rod and inner wall of cylinder.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of double-action cushion cylinder of more rational adjustable cushioning effect, this oil cylinder has the following advantages: one, when fork truck load, can regulate according to on-the-spot cushioning effect or client's requirement the cushioning effect of oil cylinder, guarantee that weight can quiet takeoff and landing; Two, can allow the less oil cylinder in space between piston rod and inner wall of cylinder realize cushioning effect.
For solving the problems of the technologies described above, the invention provides the two-way cylinder of adjustable cushioning effect, comprise cylinder barrel, cylinder barrel two ends are respectively equipped with guide sleeve, cylinder bottom, also comprise a piston rod, in the middle through-hole of described piston rod by guide sleeve, penetrate in cylinder barrel, and the piston rod end in cylinder barrel is provided with piston, it is characterized in that: near on the described cylinder barrel of rod chamber end, be provided with valve piece, valve piece is provided with two oil input channels and communicates with cylinder barrel inside, on valve piece, being also provided with two parallel oil ducts is connected respectively at two oil input channels, one end at the first oil duct is provided with one-way valve, the other end is provided with external oil pipe, one end at the second oil duct is provided with speed limited valve, the other end is closed end.
Described one-way valve comprises steel ball, valve rod, spring, plug cock, is provided with step surface and coordinates with steel ball in the first described oil duct, and the spill sphere that is provided with on described valve rod coordinates with steel ball, and described valve rod is provided with a spring and is resisted against on plug cock interior edge face.
Described speed limited valve comprises valve body, regulating valve stem, locking nut, seal ring, described valve body is threaded connection on valve piece, described valve body is provided with internal thread through hole, described regulating valve stem is connected with valve body screw thread, is provided with seal ring and coordinates with valve body on the regulating valve stem in valve body, on the regulating valve stem outside valve body, is provided with locking nut.
When fork truck load, one, can regulate according to on-the-spot cushioning effect or client's requirement the cushioning effect of oil cylinder, guarantee that weight can quiet takeoff and landing; Two, can allow the less oil cylinder in space between piston rod and inner wall of cylinder realize cushioning effect; The structure of described oil cylinder and in the past oil cylinder is distinguished mainly: increased the controllability of cushioning effect, the less oil cylinder in space between piston rod and inner wall of cylinder can be realized cushioning effect.
Accompanying drawing explanation
Fig. 1 is that the two-way cylinder of adjustable cushioning effect is used schematic diagram.
Embodiment
Below by mode of execution and accompanying drawing, this structure is described in further detail:
Referring to Fig. 1, this fork truck lifting oil cylinder New Buffering structure comprises the cylinder barrel 12 with oilhole, cylinder barrel 12 one end are threaded connection guide sleeve 11, on guide sleeve 11 outer circumferential faces of guide sleeve 11 screw thread tops and bottom, being provided with seal ring coordinates with cylinder barrel 12, cylinder barrel 12 the other ends are by being welded to connect cylinder bottom 15, cylinder bottom 15 offers oilhole and the inner UNICOM of cylinder barrel 12
Also comprise a piston rod 13, in the middle through-hole of piston rod 13 by guide sleeve 11, penetrate in cylinder barrel 12, on the fitting surface of guide sleeve 11 and piston rod 13, by outside to inner side, be provided with successively dust ring, primary seal circle, composite bush in dustproof, sealing, guiding, piston rod 13 ends in cylinder barrel 12 are provided with piston 14, at the outer circumferential face of piston 14, are provided with primary seal and support ring coordinates with cylinder barrel 12;
Near on the described cylinder barrel 12 of rod chamber end, be provided with valve piece 6, valve piece 6 is provided with two oil input channels and communicates with cylinder barrel 12 inside, on valve piece 6, being also provided with two parallel oil ducts is connected respectively at two oil input channels, one end at the first oil duct is provided with one-way valve, the other end is provided with external oil pipe, one end at the second oil duct is provided with speed limited valve, and the other end is closed end.
Described one-way valve comprises steel ball 8, valve rod 10, spring 1, plug cock 2, in the first described oil duct, being provided with step surface coordinates with steel ball 8, the spill sphere that is provided with on described valve rod 10 coordinates with steel ball 8, and described valve rod 10 is provided with a spring 1 and is resisted against on plug cock 2 interior edge faces.
Described speed limited valve comprises valve body 4, regulating valve stem 5, locking nut 3, seal ring, described valve body 4 is threaded connection on valve piece 6, described valve body 4 is provided with internal thread through hole, described regulating valve stem 5 is threaded with valve body 4, is provided with seal ring and coordinates with valve body on the regulating valve stem 5 in valve body 4, on the regulating valve stem 5 outside valve body 4, is provided with locking nut 3.
The cushioning principle of this buffer structure is as follows:
When the oil-feed of valve piece, high pressure oil is pushed the spool 8 of one-way valve open, by the first oil inlet hole 9 oil-feeds, promote piston 14 motions, when the second filler opening 7 is crossed in piston 14 motions, high pressure oil is by two filler opening oil-feeds, realize slowly and starting, rapid movement, when cylinder bottom 15 oil-feed, the first filler opening 9 and the second filler opening 7 oil returns simultaneously, when piston 14 moves while crossing the second filler opening 7 under high pressure oil effect, high pressure oil carries out oil return by speed limited valve, by regulating valve stem 5, can change the cushioning effect that oil return cross section regulates oil cylinder.
Above-described is only one embodiment of the present invention.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make apparent some conversion or substitute and remodeling, these also should be considered as belonging to protection scope of the present invention.
Claims (3)
1. the two-way cylinder of adjustable cushioning effect, comprise cylinder barrel, cylinder barrel two ends are respectively equipped with guide sleeve, cylinder bottom, also comprise a piston rod, in the middle through-hole of described piston rod by guide sleeve, penetrate in cylinder barrel, and the piston rod end in cylinder barrel is provided with piston, it is characterized in that: near on the described cylinder barrel of rod chamber end, be provided with valve piece, valve piece is provided with two oil input channels and communicates with cylinder barrel inside, on valve piece, being also provided with two parallel oil ducts is connected respectively at two oil input channels, one end at the first oil duct is provided with one-way valve, the other end is provided with external oil pipe, one end at the second oil duct is provided with speed limited valve, the other end is closed end.
2. the two-way cylinder of adjustable cushioning effect according to claim 1, it is characterized in that: described one-way valve comprises steel ball, valve rod, spring, plug cock, in the first described oil duct, being provided with step surface coordinates with steel ball, the spill sphere that is provided with on described valve rod coordinates with steel ball, and described valve rod is provided with a spring and is resisted against on plug cock interior edge face.
3. the two-way cylinder of adjustable cushioning effect according to claim 1, it is characterized in that: described speed limited valve comprises valve body, regulating valve stem, locking nut, seal ring, described valve body is threaded connection on valve piece, and described valve body is provided with internal thread through hole, and described regulating valve stem is connected with valve body screw thread, on regulating valve stem in valve body, be provided with seal ring and coordinate with valve body, on the regulating valve stem outside valve body, be provided with locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310677717.5A CN103629189A (en) | 2013-12-13 | 2013-12-13 | Double-acting oil cylinder with an adjustable buffering effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310677717.5A CN103629189A (en) | 2013-12-13 | 2013-12-13 | Double-acting oil cylinder with an adjustable buffering effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103629189A true CN103629189A (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310677717.5A Pending CN103629189A (en) | 2013-12-13 | 2013-12-13 | Double-acting oil cylinder with an adjustable buffering effect |
Country Status (1)
| Country | Link |
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| CN (1) | CN103629189A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994125A (en) * | 2014-05-20 | 2014-08-20 | 长沙达豪机械设备有限公司 | Adjustable bi-directional buffering oil cylinder |
| CN107235451A (en) * | 2017-06-22 | 2017-10-10 | 安徽合力股份有限公司 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003097515A (en) * | 2001-09-26 | 2003-04-03 | Tokai Rubber Ind Ltd | Cylinder device |
| CN102094867A (en) * | 2011-03-28 | 2011-06-15 | 长安大学 | Buffer oil cylinder |
| CN202926756U (en) * | 2012-11-08 | 2013-05-08 | 江苏理工学院 | Radial equilibrium-type hydraulic cylinder buffering device |
| CN103423234A (en) * | 2012-05-16 | 2013-12-04 | 扬州市江都永坚有限公司 | Engineering cylinder floating buffer structure with rodless cavity |
| CN203604337U (en) * | 2013-12-13 | 2014-05-21 | 蚌埠液力机械有限公司 | Double-acting oil cylinder with adjustable buffering effect |
-
2013
- 2013-12-13 CN CN201310677717.5A patent/CN103629189A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003097515A (en) * | 2001-09-26 | 2003-04-03 | Tokai Rubber Ind Ltd | Cylinder device |
| CN102094867A (en) * | 2011-03-28 | 2011-06-15 | 长安大学 | Buffer oil cylinder |
| CN103423234A (en) * | 2012-05-16 | 2013-12-04 | 扬州市江都永坚有限公司 | Engineering cylinder floating buffer structure with rodless cavity |
| CN202926756U (en) * | 2012-11-08 | 2013-05-08 | 江苏理工学院 | Radial equilibrium-type hydraulic cylinder buffering device |
| CN203604337U (en) * | 2013-12-13 | 2014-05-21 | 蚌埠液力机械有限公司 | Double-acting oil cylinder with adjustable buffering effect |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994125A (en) * | 2014-05-20 | 2014-08-20 | 长沙达豪机械设备有限公司 | Adjustable bi-directional buffering oil cylinder |
| CN103994125B (en) * | 2014-05-20 | 2016-01-13 | 长沙达豪机械设备有限公司 | Adjustable Bidirectional cushion cylinder |
| CN107235451A (en) * | 2017-06-22 | 2017-10-10 | 安徽合力股份有限公司 | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- |
| CN107235451B (en) * | 2017-06-22 | 2023-02-24 | 安徽合力股份有限公司 | Low-delay starting and inner-leakage-preventing buffer oil cylinder for portal above four levels |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140312 |