CN204038961U - A kind of jack hydraulic cylinder of anti-scuffing of cylinder bore - Google Patents
A kind of jack hydraulic cylinder of anti-scuffing of cylinder bore Download PDFInfo
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- CN204038961U CN204038961U CN201420519287.4U CN201420519287U CN204038961U CN 204038961 U CN204038961 U CN 204038961U CN 201420519287 U CN201420519287 U CN 201420519287U CN 204038961 U CN204038961 U CN 204038961U
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- annular ridge
- cylinder
- circular groove
- wear
- outer shell
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Abstract
The utility model discloses a kind of jack hydraulic cylinder of anti-scuffing of cylinder bore, comprise outer shell and be nested in the inner casing in outer shell, outer shell is arranged on base, base leaves oil-through hole, described outer shell leaves the first annular ridge on the inwall at top, the first annular ridge is coated with the first wear-resisting copper strips, leaves the first circular groove above the first annular ridge, be equipped with the first seal ring in first circular groove, below the first annular ridge, leave the first breather hole; Described inner casing leaves the second annular ridge on the outer wall of bottom, the second annular ridge is coated with the second wear-resisting copper strips, and the second circular groove is left in the below of the second annular ridge, is equipped with the second seal ring in the second circular groove.This hydraulic actuating cylinder is provided with annular ridge on each cylinder body, fin is coated with wear-resisting copper strips, and different cylinder body Contact is tight, and wear resisting property is good, pull-cylinder phenomena does not occur.
Description
Technical field
The utility model relates to a kind of hydraulic actuating cylinder, in particular to a kind of long service life, effectively prevents the jack hydraulic cylinder of scuffing of cylinder bore.
Background technology
Hydraulic jack is a kind of small lifting equipment, and it utilizes valve body to be sucked by the oil in fuel tank, and then the oil pressure of suction is entered hydraulic actuating cylinder, under the condition that pressure is equal, produce larger jacking force by the large area of hydraulic cylinder body, and then by weight jack-up.Hydraulic actuating cylinder generally comprises outer shell and solid inner casing, or cylinder in being also provided with between outer shell and inner casing, nested successively between them, several roads seal ring is set by inside wall of cylinder top outside and several roads seal ring is set at inner casing outer wall and carry out mutual sealing, prevent hydraulic oil through to keep pressure, these seal rings are generally arranged on by plastic support ring in the circular groove of outer wall or inwall.When hydraulic actuating cylinder rises, there is gap between inner casing and outer shell or middle cylinder, the less sealing effectiveness in gap is better, and lifting effect is also better.But, the mounting structure of circular groove and the plastic support ring of seal ring limited in unbalance loading state lower support, between interior outer shell gap strengthen, seal ring easily damages, time one easily generation of a specified duration seal ring breaks, leakage of oil, thus hydraulic actuating cylinder pull-cylinder phenomena occurs, and has a strong impact on lifting usefulness.
Utility model content
The purpose of this utility model is to provide a kind of jack hydraulic cylinder of anti-scuffing of cylinder bore, this hydraulic actuating cylinder is provided with annular ridge on each cylinder body, fin is coated with wear-resisting copper strips, different cylinder body Contact is tight, resistance to unbalance loading performance is good, between oil cylinder, gap is little, and during unbalance loading, copper strips bearing force is strong, not easily scuffing of cylinder bore or oil leakage phenomenon occurs.
To achieve these goals, the utility model takes following technical scheme:
A kind of jack hydraulic cylinder of anti-scuffing of cylinder bore, comprise outer shell and be nested in the inner casing in outer shell, outer shell is arranged on base, base leaves oil-through hole, it is characterized in that, described outer shell leaves the first annular ridge on the inwall at top, first annular ridge is coated with the first wear-resisting copper strips, leave the first circular groove above first annular ridge, in the first circular groove, be equipped with the first seal ring, below the first annular ridge, leave the first breather hole; Described inner casing leaves the second annular ridge on the outer wall of bottom, the second annular ridge is coated with the second wear-resisting copper strips, and the second circular groove is left in the below of the second annular ridge, is equipped with the second seal ring in the second circular groove.
In order to strengthen hydraulic actuating cylinder spread length, cylinder in first can be nested with between described outer shell and inner casing, in described first, cylinder leaves the 3rd annular ridge on the outer wall of bottom, 3rd annular ridge is coated with the 3rd wear-resisting copper strips, the 3rd circular groove is left below 3rd annular ridge, the 3rd seal ring is equipped with in 3rd circular groove, in described first, cylinder leaves the 4th annular ridge on the inwall at top, 4th annular ridge is coated with the 4th wear-resisting copper strips, the 4th circular groove is provided with above 4th annular ridge, the 4th seal ring is equipped with in 4th circular groove, the second breather hole is left below 4th annular ridge.Preferably, cylinder bottom inside is provided with bracing ring in described first.
Further, cylinder in second is also nested with between cylinder and inner casing in described first, in described second, cylinder leaves the 5th annular ridge on the outer wall of bottom, 5th annular ridge is coated with the 5th wear-resisting copper strips, the 5th circular groove is left below 5th annular ridge, the 5th seal ring is equipped with in 5th circular groove, in described second, cylinder leaves the 6th annular ridge on the inwall at top, 6th annular ridge is coated with the 6th wear-resisting copper strips, the 6th circular groove is provided with above 6th annular ridge, the 6th seal ring is equipped with in 6th circular groove, the 3rd breather hole is left below 6th annular ridge.Preferably, in cylinder and second, cylinder bottom inside is equipped with bracing ring in described first.
The beneficial effect that the utility model obtains is, annular ridge on annular ridge on the outer inside wall of cylinder and middle cylinder or inner casing outer wall can close contact, wear-resisting copper strips on middle cylinder outer wall on annular ridge and outer inside wall of cylinder joint, strengthen resistance to abrasion, on the middle inside wall of cylinder, the wear-resisting copper strips of annular ridge contacts with inner casing outer wall, the middle inside wall of cylinder contacts with the wear-resisting copper strips on the annular ridge of inner casing outer wall, all effectively strengthen resistance to abrasion, by outer shell, middle cylinder, inner casing combines, obtain twin-tub, three cylinders, the jack hydraulic cylinder of four cylinders, long service life, prevent pull-cylinder phenomena from occurring.
Accompanying drawing explanation
Fig. 1 is inner casing cross-sectional view;
Fig. 2 is middle cylinder cross-sectional view;
Fig. 3 outer shell cross-sectional view;
Fig. 4 is understructure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
In the utility model, hydraulic actuating cylinder can be combined into by outer shell and inner casing, also three cylinder hydraulic actuating cylinders can be synthesized by outer shell, middle cylinder, inner casing three kinds successively nested groups, can also by outer shell, two nested successively in cylinder, inner casing be combined into the hydraulic actuating cylinder of four cylinders, describe the structure of outer shell, middle cylinder and inner casing below respectively, carry out being combined into hydraulic actuating cylinder after possessing this structure again and usually operate for those skilled in the art.
As shown in Figure 1, inner casing 1 is cylindrical, and top 5 is for plane or be provided with groove, to pacify into parallels for supporting weight, inner casing 1 is the piston of hydraulic actuating cylinder.The outer wall of bottom leaves the second annular ridge 2, second annular ridge 2 is coated with the second wear-resisting copper strips 3, the second circular groove 4 is left in the below of the second annular ridge 2, the second seal ring (not shown) is equipped with in second circular groove 4, second wear-resisting copper strips 3 and the contact internal walls of middle cylinder 6 described later, have the effect of Wear-resistant scratch-resistant wound.
As shown in Figure 2, in first, cylinder 6 is nested between aftermentioned outer shell 15 and inner casing 1, in first, cylinder 6 leaves the 3rd annular ridge 14 on the outer wall of bottom, 3rd annular ridge 14 is coated with the 3rd wear-resisting copper strips 13, the 3rd circular groove 12 is left below 3rd annular ridge 14, the 3rd seal ring (not shown) is equipped with in 3rd circular groove 12, in first, cylinder 6 leaves the 4th annular ridge 7 on the inwall at top, 4th annular ridge 7 is coated with the 4th wear-resisting copper strips 8, the 4th circular groove 9 is provided with above 4th annular ridge 7, the 4th seal ring (not shown) is equipped with in 4th circular groove 9, the second breather hole 20 is left below 4th annular ridge 7.In first, cylinder 6 top is left annular opening 10 and is stretched out to make inner casing 1.In first, cylinder 6 is enclosed within outside inner casing 1,4th wear-resisting copper strips 8 and the 4th seal ring all seal with the outer wall of inner casing 1 and contact, simultaneously, second wear-resisting copper strips 3 of inner casing 1 all contacts with the inner wall sealing of cylinder in first 6 with the second seal ring, the lower edge of such 4th wear-resisting copper strips 8 and the upper limb close contact of the second wear-resisting copper strips 3, add upper and lower seal ring, serve good sealing function.In an embodiment of the present utility model, in first, cylinder in a similar second can also be nested with by cylinder 6, then be inserted in inner casing, like this can growing liquid cylinder pressure collapsing length.In another embodiment of the present utility model, in first, cylinder 6 bottom inside can be equipped with bracing ring 11, for playing jacking fixation when inner casing 1 falls to inner casing, prevents inner casing 1 from skew occurring below cylinder 6 from first or falls too much.In another embodiment of the present utility model, in first, in cylinder and second, cylinder can arrange bracing ring in bottom inside.In second breather hole 20(second, cylinder correspondingly can be provided with the 3rd breather hole) air can be made to pass through, thus when making inner casing 1 rise or fall in inner casing 1 and first in cylinder 6 or the second between cylinder gap keep pressure communication with extraneous.
As shown in Figure 3 and Figure 4, outer shell 15 is arranged on the negative thread 23 of base 22 by the outside thread 25 of bottom outside, base leaves oil-through hole 24 to make hydraulic oil flow into or to flow out, outer shell 15 leaves the first annular ridge 16 on the inwall at top, first annular ridge 16 is coated with the first wear-resisting copper strips 19, the first circular groove 17 is left above first annular ridge 16, the first seal ring (not shown) is equipped with in first circular groove, the first breather hole 21 is left below first annular ridge 16, outer shell 15 top is left annular opening 18 and is risen to make cylinder 6 in first or fall.In first, the 3rd of cylinder 6 the wear-resisting copper strips 13 contacts the outer inside wall of cylinder, the outer inside wall of cylinder of the 3rd seal ring contact on 3rd circular groove 12, first wear-resisting copper strips 19 of outer shell contacts the outer wall of cylinder 6 in first, and in the first seal ring contact first on the first circular groove 17, the outer wall of cylinder 6 seals.First breather hole 21 can make air pass through, thus gap keeps pressure communication with extraneous when making that in first, cylinder 6 rises or falls and between outer shell 15.
In above-mentioned outer shell 15, first, in cylinder 6, second, each annular ridge of cylinder, inner casing 1 is material identical with each cylinder body and one-body molded, not only adhesion-tight, and be convenient to cover wear-resisting copper strips, each annular ridge transversal surface is generally rectangle, is convenient to reserve balance upper and lower surface and other annular ridges fit tightly.
The present embodiment just to the utility model design and explanations realizing, is not limited, and under the utility model design, the technical scheme converted without essence is still in protection domain.
Claims (5)
1. the jack hydraulic cylinder of an anti-scuffing of cylinder bore, comprise outer shell and be nested in the inner casing in outer shell, outer shell is arranged on base, base leaves oil-through hole, it is characterized in that, described outer shell leaves the first annular ridge on the inwall at top, first annular ridge is coated with the first wear-resisting copper strips, leave the first circular groove above first annular ridge, in the first circular groove, be equipped with the first seal ring, below the first annular ridge, leave the first breather hole; Described inner casing leaves the second annular ridge on the outer wall of bottom, the second annular ridge is coated with the second wear-resisting copper strips, and the second circular groove is left in the below of the second annular ridge, is equipped with the second seal ring in the second circular groove.
2. jack hydraulic cylinder as claimed in claim 1, it is characterized in that, cylinder in first is nested with between described outer shell and inner casing, in described first, cylinder leaves the 3rd annular ridge on the outer wall of bottom, 3rd annular ridge is coated with the 3rd wear-resisting copper strips, the 3rd circular groove is left below 3rd annular ridge, the 3rd seal ring is equipped with in 3rd circular groove, in described first, cylinder leaves the 4th annular ridge on the inwall at top, 4th annular ridge is coated with the 4th wear-resisting copper strips, the 4th circular groove is provided with above 4th annular ridge, the 4th seal ring is equipped with in 4th circular groove, the second breather hole is left below 4th annular ridge.
3. jack hydraulic cylinder as claimed in claim 2, it is characterized in that, cylinder in second is also nested with between cylinder and inner casing in described first, in described second, cylinder leaves the 5th annular ridge on the outer wall of bottom, 5th annular ridge is coated with the 5th wear-resisting copper strips, the 5th circular groove is left below 5th annular ridge, the 5th seal ring is equipped with in 5th circular groove, in described second, cylinder leaves the 6th annular ridge on the inwall at top, 6th annular ridge is coated with the 6th wear-resisting copper strips, the 6th circular groove is provided with above 6th annular ridge, the 6th seal ring is equipped with in 6th circular groove, the 3rd breather hole is left below 6th annular ridge.
4. jack hydraulic cylinder as claimed in claim 2, it is characterized in that, in described first, cylinder bottom inside is provided with bracing ring.
5. jack hydraulic cylinder as claimed in claim 3, it is characterized in that, in described first, in cylinder and second, cylinder bottom inside is equipped with bracing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519287.4U CN204038961U (en) | 2014-09-11 | 2014-09-11 | A kind of jack hydraulic cylinder of anti-scuffing of cylinder bore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519287.4U CN204038961U (en) | 2014-09-11 | 2014-09-11 | A kind of jack hydraulic cylinder of anti-scuffing of cylinder bore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204038961U true CN204038961U (en) | 2014-12-24 |
Family
ID=52239652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420519287.4U Expired - Fee Related CN204038961U (en) | 2014-09-11 | 2014-09-11 | A kind of jack hydraulic cylinder of anti-scuffing of cylinder bore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204038961U (en) |
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2014
- 2014-09-11 CN CN201420519287.4U patent/CN204038961U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20200911 |