CN205078543U - A rotatory hydro -cylinder for levelling machine - Google Patents
A rotatory hydro -cylinder for levelling machine Download PDFInfo
- Publication number
- CN205078543U CN205078543U CN201520851366.XU CN201520851366U CN205078543U CN 205078543 U CN205078543 U CN 205078543U CN 201520851366 U CN201520851366 U CN 201520851366U CN 205078543 U CN205078543 U CN 205078543U
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- China
- Prior art keywords
- mounting groove
- cylinder
- seal ring
- hydro
- sealing washer
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Abstract
The utility model provides a rotatory hydro -cylinder for levelling machine, including the hydro -cylinder cylinder body, seted up on the hydro -cylinder cylinder body along its axially extended cavity, set up the inlet port and the oil outlet that are linked together with the cavity on the hydro -cylinder cylinder body, be provided with first sealing washer mounting groove and second sealing washer mounting groove in the cavity, be provided with the sealing washer in first sealing washer mounting groove and the second sealing washer mounting groove, first sealing washer mounting groove and second sealing washer mounting groove are located between oil outlet and the inlet port, the both ends of hydro -cylinder cylinder body are provided with the skeleton oil blanket respectively, it is sealed through setting up twice, increase its contact surface, prolongs the use time, and it is sealed effectual, add the skeleton oil blanket through the both ends at the hydro -cylinder cylinder body in addition, improve sealed effect.
Description
Technical field
The utility model relates to a kind of rotating hydraulic cylinder for leveler.
Background technique
For the rotating hydraulic cylinder of leveler in prior art, comprise cylinder block, described cylinder block offer along its axially extended cavity, described cylinder block offers the oil inlet hole and oil outlet that are connected with described cavity, sealed together with being originally only provided with between oil inlet hole with oil outlet, and the two ends of cylinder block are sealed by end cap, sealing effect is poor.
Summary of the invention
The purpose of this utility model is the deficiency overcoming above-mentioned technology, thus provides a kind of rotating hydraulic cylinder for leveler, good sealing effect.
The technological scheme that the utility model adopts is such: for the rotating hydraulic cylinder of leveler, comprise cylinder block, described cylinder block offer along its axially extended cavity, described cylinder block offers the oil inlet hole and oil outlet that are connected with described cavity, the first seal ring mounting groove and the second seal ring mounting groove is provided with in described cavity, seal ring is provided with in described first seal ring mounting groove and described second seal ring mounting groove, described first seal ring mounting groove and described second seal ring mounting groove are between described oil outlet and described oil inlet hole, the two ends of described cylinder block are respectively arranged with outside framework oil seal.
Further improvement: described cavity is stepped.
Further improvement: the external port of described oil inlet hole and described oil outlet is respectively arranged with dust-proof cover.
By adopting preceding solution, the beneficial effects of the utility model are: by arranging two seals, increase its surface of contact, extend working time, and good sealing effect, set up outside framework oil seal by the two ends at cylinder block in addition, improve sealing effect.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
Wherein: 1, cylinder block; 2, the first seal ring mounting groove; 3, the second seal ring mounting groove; 4, outside framework oil seal; 5, oil inlet hole; 6, oil outlet; 7, dust-proof cover.
Embodiment
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model discloses a kind of rotating hydraulic cylinder for leveler, comprise cylinder block 1, described cylinder block 1 offers along its axially extended cavity, described cylinder block 1 offers the oil inlet hole 5 be connected with described cavity and oil outlet 6, the first seal ring mounting groove 2 and the second seal ring mounting groove 3 is provided with in described cavity, seal ring is provided with in described first seal ring mounting groove 2 and described second seal ring mounting groove 3, described first seal ring mounting groove 2 and described second seal ring mounting groove 3 are between described oil outlet 6 and described oil inlet hole 7, the two ends of described cylinder block 1 are respectively arranged with outside framework oil seal 4.
Outside framework oil seal 4: outside framework oil seal 4 structure is made up of three parts: oil seal body, web frame and self-tightening helical spring, seal is divided into again bottom according to different parts, waist, cutting edge and sealing lip etc., usually, outside framework oil seal in a free state, its internal diameter is less than the diameter of axle, namely have certain " magnitude of interference ", therefore, after oil sealing loads cylinder block 1 and piston rod, the pressure of oil sealing cutting edge and the helical spring contractile force of self-tightening produce the tight power of certain radial direction to axle, after running after a while, this pressure can reduce rapidly and even disappear, thus, adding upper spring can Compensation oil seal self-tightening power prevent liquid from entering at any time.
Transformation principle: only have one Sealing by the middle of former cylinder block 1, because surface of contact is little, easy to wear, cause life cycle short, add maintenance cost, with engineering time, have impact on manufacturing efficiency, existing by former centre together sealing, change two seals into, increase its surface of contact, extend working time, and add sealing effect;
Outside framework oil seal 4 is set up at the two ends of this external cylinder block 1, improves sealing effect.
The mode of execution optimized in the present embodiment is, described cavity is stepped.
In order to improve dust-proof effect, prevent dust from entering in cylinder block 1 from oil inlet hole and oil outlet, the external port of described oil inlet hole 5 and described oil outlet 6 is respectively arranged with dust-proof cover 7.
More than show and describe basic principle of the present utility model and major character and advantage thereof; the technician of the industry should understand; the utility model is not restricted to the described embodiments; above-described embodiment just illustrates principle of the present utility model with description in explanation; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall within the scope of claimed the utility model, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. for the rotating hydraulic cylinder of leveler, it is characterized in that: comprise cylinder block, described cylinder block offer along its axially extended cavity, described cylinder block offers the oil inlet hole and oil outlet that are connected with described cavity, the first seal ring mounting groove and the second seal ring mounting groove is provided with in described cavity, seal ring is provided with in described first seal ring mounting groove and described second seal ring mounting groove, described first seal ring mounting groove and described second seal ring mounting groove are between described oil outlet and described oil inlet hole, the two ends of described cylinder block are respectively arranged with outside framework oil seal.
2. the rotating hydraulic cylinder for leveler according to claim 1, is characterized in that: described cavity is stepped.
3. the rotating hydraulic cylinder for leveler according to claim 1, is characterized in that: the external port of described oil inlet hole and described oil outlet is respectively arranged with dust-proof cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520851366.XU CN205078543U (en) | 2015-10-30 | 2015-10-30 | A rotatory hydro -cylinder for levelling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520851366.XU CN205078543U (en) | 2015-10-30 | 2015-10-30 | A rotatory hydro -cylinder for levelling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078543U true CN205078543U (en) | 2016-03-09 |
Family
ID=55430957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520851366.XU Active CN205078543U (en) | 2015-10-30 | 2015-10-30 | A rotatory hydro -cylinder for levelling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078543U (en) |
-
2015
- 2015-10-30 CN CN201520851366.XU patent/CN205078543U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191210 Granted publication date: 20160309 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200610 Granted publication date: 20160309 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200710 Granted publication date: 20160309 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210110 Granted publication date: 20160309 |