CN100482955C - 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom - Google Patents
1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom Download PDFInfo
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- CN100482955C CN100482955C CNB2007100222172A CN200710022217A CN100482955C CN 100482955 C CN100482955 C CN 100482955C CN B2007100222172 A CNB2007100222172 A CN B2007100222172A CN 200710022217 A CN200710022217 A CN 200710022217A CN 100482955 C CN100482955 C CN 100482955C
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Abstract
The present invention relates to a 1-3.5T intermittent buffered lifting hydraulic cylinder with cylinder bottom non-return valve. It is an improvement on existent lifting hydraulic cylinder structure, and its improvement lies in that on the radial direction of oil groove side of cylinder bottom a small through hole is cut, said small through hole and shaft are connected with steel bal hole and threaded hole, and on the cylinder bottom a by-pass oil groove is set, and said by-pass oil groove is correspondent to the piston bottom portion, and in the steel ball hole a steel ball is mounted.
Description
Technical field
The present invention relates to be used for the lift oil tank of little tonnage fork truck tackling system.
Background technique
The lift oil tank that present stage is used for little tonnage fork truck tackling system has quite a few to adopt gap buffer mechanism, to play the purpose of the buffering that descends.The principle of gap buffer oil cylinder is to adopt the form of hydraulic throttle, control hydraulic oil oil return flow, thus the rate of descent of reduction goods has been eliminated the noise that produces owing to the bump that descends.Because its principle is simple, easy to make, cost is lower, so the application area of gap buffer is wider.But the cylinder buffer mechanism of existing form, though solved the buffer problem that oil cylinder descends, there is a unavoidable problem---rising throttling.Being created in of rising throttling reduced the efficient that hoists to a certain extent, reduced lifting velocity; Meanwhile, in the buffer time section that rises, greatly reduce hydraulic oil real work area, objectively improved working oil temperature, reduced each hydraulic parts and use stability in use, be unfavorable for fork truck work.
Summary of the invention
The present invention can solve rising throttling problem again in order to solve the decline buffering that can guarantee lift oil tank; Guarantee reliability of operation simultaneously, a kind of 1-3.5T gap buffer lift oil cylinder with cylinder bottom one-way valve is provided.
The Technological improvement plan of realizing the foregoing invention purpose is as follows:
1-3.5T gap buffer lift oil cylinder with cylinder bottom one-way valve, comprise cylinder body, piston, spool and cylinder bottom, spool is positioned at the piston spool bore corresponding with cylinder bottom, and spool is corresponding with the oil duct of cylinder bottom, be set with support ring and catch on the piston, valve core upper sleeve is equipped with copper sheathing;
Described cylinder bottom oil duct one side directly upwards is provided with a small through hole, and coaxial steel ball hole and the tapped hole of connecting of small through hole is provided with a bypass oil duct corresponding with piston base perpendicular to steel ball hole, cylinder bottom, is provided with steel ball in the steel ball hole, and tapped hole is provided with plug screw.
The diameter range of described small through hole is the 4-6 millimeter, the diameter range 5-6.5 millimeter of described bypass oil duct.
Useful technique effect of the present invention is embodied in following several aspect:
1, the 1-3.5T gap buffer lift oil cylinder with cylinder bottom one-way valve hoist smooth and easy, the slow situation that hoists of no short time.
2, the present invention has eliminated the hydraulic oil throttle point by the improvement to existing 1-3.5t gap buffer lift oil cylinder, has reduced hydraulic oil temperature, helps fork truck thermal equilibrium.
3, the present invention has improved the working life of each related fluid casting die and high-pressure rubber pipe.
4, it is simple, easy to maintenance to have a 1-3.5T gap buffer lift cylinder structure of cylinder bottom one-way valve.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is a lift oil tank cylinder bottom enlarged diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described by embodiment.
Embodiment:
1-3.5T gap buffer lift oil cylinder with cylinder bottom one-way valve comprises cylinder body, piston 2, spool 5 and cylinder bottom 12, spool 5 is positioned at piston 2 spool bore corresponding with cylinder bottom, and spool 5 is corresponding with the oil duct of cylinder bottom 12, be set with piston Steel Cable Baffle Ring 1, support ring 3, U RunddichtringO 6 and catch 7 on the piston 2, be set with copper sheathing 4 and Steel Cable Baffle Ring 8 on the spool 5, see Fig. 1.
Oil duct one side of cylinder bottom 12 directly upwards has a small through hole 13, small through hole 13 coaxial communication are lived steel ball hole 14 and tapped hole 15, perpendicular to a bypass oil duct 16 corresponding with piston 2 bottoms arranged on steel ball hole 14, the cylinder bottom 12, steel ball 11 cooperations are loaded on and play one-way valves in the steel ball hole 14, connect bonded washer 10 and hexagonal spiro plug 9 on the tapped hole 15, seeing Fig. 1 and Fig. 2.
The diameter range of small through hole 13 is the 4-6 millimeter, and the diameter range 5-6.5 millimeter of bypass oil duct 16, steel ball 11 cooperate with small through hole 13 realizes switch, and the diameter of steel ball 11 is determined according to the diameter range of small through hole.
When lift oil tank of the present invention hoists action, hydraulic oil enters the oil cylinder cylinder bottom from the A mouth, under pressure, flow to the E mouth of cylinder bottom oil duct D mouth and small through hole respectively, because the useful area very little (gap buffer) of cylinder bottom oil duct D mouth, so E mouth that flows to small through hole that hydraulic oil is a large amount of, and open one-way valve, hydraulic oil acts on the piston by bypass oil duct C mouth under the effect of pressure like this, make on the piston and move, drive simultaneously on the copper sheathing 4 and move, when after by whole cushion stroke, hydraulic oil begins to act on the piston by cylinder bottom oil duct D mouth, and lift oil tank is risen fully.When oil cylinder piston begins to descend, among the figure during the overlapping beginning of copper sheathing 4 and spool 5, one-way valve steel ball 11 cuts out one-way valve under the effect of hydraulic oil, make hydraulic oil without bypass oil duct C mouth, but from the slit oil return between copper sheathing 4 and the spool 5, because useful area is minimum, thereby reach the buffering purpose that descends.
Claims (1)
1, the 1-3.5T gap buffer lift oil cylinder that has the cylinder bottom one-way valve, comprise cylinder body, piston, spool and cylinder bottom, piston is provided with spool bore towards an end of cylinder bottom, spool is positioned at described spool bore, spool is fixed on the cylinder bottom by Steel Cable Baffle Ring (8), and the oil duct in the spool is connected with oil duct in the cylinder bottom; Be set with support ring and catch on the piston, valve core upper sleeve is equipped with copper sheathing; It is characterized in that:
Described cylinder bottom oil duct one side directly upwards is provided with a small through hole, coaxial steel ball hole and the tapped hole of connecting of small through hole; Be provided with one perpendicular to the bypass oil duct steel ball hole axis and that be communicated with steel ball hole in cylinder bottom, the bypass oil duct is through to piston base; Be provided with steel ball in the steel ball hole, tapped hole is provided with plug screw;
The diameter range of described small through hole is the 4-6 millimeter, the diameter range 5-6.5 millimeter of described bypass oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100222172A CN100482955C (en) | 2007-04-30 | 2007-04-30 | 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100222172A CN100482955C (en) | 2007-04-30 | 2007-04-30 | 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101050782A CN101050782A (en) | 2007-10-10 |
| CN100482955C true CN100482955C (en) | 2009-04-29 |
Family
ID=38782340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100222172A Active CN100482955C (en) | 2007-04-30 | 2007-04-30 | 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100482955C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536958B (en) * | 2012-02-24 | 2016-02-03 | 常州轩达液压机电设备有限公司 | Vertical roller mill buffering device |
| CN104836152B (en) * | 2012-10-16 | 2018-10-30 | 国网江苏省电力有限公司常州供电分公司 | The stroke fine adjustment type hydraulic device of insulator replacement tool |
| CN104752992B (en) * | 2012-10-16 | 2018-03-20 | 江苏省电力公司常州供电公司 | A kind of stroke fine adjustment type clamp force device of replacing device for insulator |
| CN103629179A (en) * | 2013-11-27 | 2014-03-12 | 合肥海源机械有限公司 | Improved structure of lifting oil cylinder block one-way valve |
| CN110216438B (en) * | 2019-07-12 | 2024-03-19 | 蚌埠液力机械有限公司 | Automatic assembly equipment for fork truck inclined oil cylinder piston sealing element |
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2007
- 2007-04-30 CN CNB2007100222172A patent/CN100482955C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101050782A (en) | 2007-10-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Bengbu Hydraulic Machinery Co., Ltd. Assignor: Heli Co., Ltd., Anhui Contract record no.: 2011340000499 Denomination of invention: 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom Granted publication date: 20090429 License type: Exclusive License Open date: 20071010 Record date: 20111226 |