CN207018295U - A kind of forestry machinery oil cylinder - Google Patents
A kind of forestry machinery oil cylinder Download PDFInfo
- Publication number
- CN207018295U CN207018295U CN201720977568.8U CN201720977568U CN207018295U CN 207018295 U CN207018295 U CN 207018295U CN 201720977568 U CN201720977568 U CN 201720977568U CN 207018295 U CN207018295 U CN 207018295U
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- China
- Prior art keywords
- cylinder barrel
- piston
- oil cylinder
- machinery oil
- piston rod
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Abstract
The utility model discloses a kind of forestry machinery oil cylinder, including cylinder barrel, the internal activity of the cylinder barrel is provided with piston, the left end of the piston and the right-hand member of piston rod, which coordinate, to be installed, the left end inwall of the cylinder barrel is installed with guide sleeve, the left side of the piston rod passes through the inner ring of guide sleeve, and the bottom integrated installation of the cylinder barrel has Bidirectional balanced valve, and the left and right sides of the piston is respectively cylinder barrel rod chamber and cylinder barrel rodless cavity；The forestry machinery oil cylinder, simple in construction, oil cylinder operation is safer, and steadily, end impact is smaller, and noise is smaller, has very strong applicability, is adapted to large-scale promotion.
Description
Technical field
Oil cylinder technical field is the utility model is related to, specially a kind of forestry machinery oil cylinder.
Background technology
External forestry machinery development is more early, and various professional equipments are also more complete；Domestic forestry enterprise passes through Introduced From Abroad
Technology, also there is the application of a large amount of plant equipment.But as the development of social productive forces, domestic and international woods look forward to the use all to equipment
Performance proposes new requirement, and the efficient of such as equipment, energy-conservation, long lifespan, function are complete, Environmental Safety, cost-effective, remarkable
Operating handle, low noise, efficient energy-conservation, the waste gas discharge, smokeless and non-stimulated smell etc. of cleaning.These will also turn into row
The later development trend of industry.
Utility model content
The purpose of this utility model is to provide a kind of forestry machinery oil cylinder, asked with solve to propose in above-mentioned background technology
Topic.
To achieve the above object, the utility model provides following technical scheme：A kind of forestry machinery oil cylinder, including cylinder barrel,
The internal activity of the cylinder barrel is provided with piston, and the left end of the piston and the right-hand member of piston rod, which coordinate, to be installed, the cylinder barrel
Left end inwall is installed with guide sleeve, and the left side of the piston rod passes through the inner ring of guide sleeve, and the bottom of the cylinder barrel integrates
Bidirectional balanced valve is installed, the left and right sides of the piston is respectively cylinder barrel rod chamber and cylinder barrel rodless cavity.
Preferably, the internal diameter of cylinder dimensional accuracy is H7 or H8, surface roughness Ra0.4um.
Preferably, matching somebody with somebody for the piston external diameter is combined into f9, and external diameter is not more than 0.2mm, end face to the concentricity tolerance of endoporus
It is not more than 0.04mm/100mm with the squareness tolerance of axis.
Preferably, the piston rod is material 45#, and the surface hardening depth 0.5-1mm of piston rod, outside dimension tolerance
F7, the axle journal and outer circles for installing piston are not more than 0.01mm, roughness of excircle Ra0.2um, and the surface of piston rod is set
There is chromium coating, and the thickness of chromium coating is 0.03~0.05mm.
Preferably, the guide sleeve excircle dimension tolerance is f7, and hole size tolerance is H8, the cylindrical and axiality of endoporus
Tolerance is not more than 0.03mm.
Compared with prior art, the beneficial effects of the utility model are：The forestry machinery oil cylinder, simple in construction, oil cylinder fortune
Row is safer, and steadily, end impact is smaller, and noise is smaller, has very strong applicability, is adapted to large-scale promotion.
Brief description of the drawings
Fig. 1 is the utility model structure sectional drawing.
In figure：1 cylinder barrel, 2 pistons, 3 piston rods, 4 guide sleeves, 5 Bidirectional balanced valves, 6 cylinder barrel rod chambers, 7 cylinder barrel rodless cavities.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of technical scheme：A kind of forestry machinery oil cylinder, including cylinder barrel 1, it is described
The internal activity of cylinder barrel 1 is provided with piston 2, and the left end of the piston 2 coordinates with the right-hand member of piston rod 3 to be installed, the cylinder barrel 1
Left end inwall is installed with guide sleeve 4, and the left side of the piston rod 3 passes through the inner ring of guide sleeve 4, the bottom of the cylinder barrel 1
Integrated installation has Bidirectional balanced valve 5, and the left and right sides of the piston 2 is respectively cylinder barrel rod chamber 6 and cylinder barrel rodless cavity 7.
Specifically, the internal diameter size precision of cylinder barrel 1 is H7 or H8, surface roughness Ra0.4um.
Specifically, matching somebody with somebody for the external diameter of piston 2 is combined into f9, and external diameter is not more than 0.2mm, end face to the concentricity tolerance of endoporus
It is not more than 0.04mm/100mm with the squareness tolerance of axis.
Specifically, the piston rod 3 is material 45#, and the surface hardening depth 0.5-1mm of piston rod 3, outside dimension are public
Poor f7, the axle journal and outer circles for installing piston 2 are not more than 0.01mm, roughness of excircle Ra0.2um, and the table of piston rod 3
Face is provided with chromium coating, and the thickness of chromium coating is 0.03~0.05mm.
Specifically, the excircle dimension tolerance of guide sleeve 4 is f7, and hole size tolerance is H8, cylindrical coaxial with endoporus
Degree tolerance is not more than 0.03mm.
The core technology and innovative point of the forestry machinery oil cylinder：
1. pressure-bearing weld seam should be able to bear 200% pressure test of rated operating pressure.
2. pressure-bearing weld metal mechanical performance：Tensile strength >=500MPa, stretching rate >=12%.
3. the dimensional accuracy of inner hole of cylinder sealing mating surface must not be less than H7.
4. the surface roughness of the endoporus of cylinder barrel 1 sealing mating surface is Ra0.2.
5. the outside dimension precision that piston rod 2 seals mating surface must not be less than f8.
6. the external diameter surface roughness that piston rod 3 seals mating surface is Ra0.2.
7. the Tempering and Quenching hardness of cylinder barrel 1, piston rod 3：HB240~280.
8. coating voidage：Chromium-plated part is less than 15 points/dm2；Diameter is not more than 0.2mm.
9. cleannes require：Column cleaning after pass the test, is filtered, gained net with the filter of 120 mesh/inch precision
Upper article drying is weighed, and its weight must not exceed standard requirement.
10. sealing property is ensured using import quality seal part.
11. cylinder bottom integrated bi-directional balanced valve 5, oil cylinder operation is safer, and steadily, end impact is smaller, and noise is smaller.
Therefore the forestry machinery oil cylinder, simple in construction, oil cylinder operation is safer, and steadily, end impact is smaller, and noise is more
It is small, there is very strong applicability, be adapted to large-scale promotion.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of forestry machinery oil cylinder, including cylinder barrel（1）, it is characterised in that：The cylinder barrel（1）Internal activity piston is installed
（2）, the piston（2）Left end and piston rod（3）Right-hand member coordinate installation, the cylinder barrel（1）Left end inwall be fixedly mounted
There is guide sleeve（4）, the piston rod（3）Left side pass through guide sleeve（4）Inner ring, the cylinder barrel（1）Bottom integrated installation
There is Bidirectional balanced valve（5）, the piston（2）The left and right sides be respectively cylinder barrel rod chamber（6）With cylinder barrel rodless cavity（7）.
A kind of 2. forestry machinery oil cylinder according to claim 1, it is characterised in that：The cylinder barrel（1）Internal diameter size precision
For H7 or H8, surface roughness Ra0.4um.
A kind of 3. forestry machinery oil cylinder according to claim 1, it is characterised in that：The piston（2）Matching somebody with somebody for external diameter is combined into
F9, external diameter are not more than 0.2mm to the concentricity tolerance of endoporus, and the squareness tolerance of end face and axis is not more than 0.04mm/
100mm。
A kind of 4. forestry machinery oil cylinder according to claim 1, it is characterised in that：The piston rod（3）For material 45#,
And piston rod（3）Surface hardening depth 0.5-1mm, outside dimension tolerance f7, install piston（2）Axle journal and outer circles
No more than 0.01mm, roughness of excircle Ra0.2um, and piston rod（3）Surface be provided with chromium coating, and the thickness of chromium coating is
0.03~0.05mm.
A kind of 5. forestry machinery oil cylinder according to claim 1, it is characterised in that：The guide sleeve（4）Excircle dimension is public
Difference is f7, and hole size tolerance is H8, cylindrical to be not more than 0.03mm with the concentricity tolerance of endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977568.8U CN207018295U (en) | 2017-08-07 | 2017-08-07 | A kind of forestry machinery oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977568.8U CN207018295U (en) | 2017-08-07 | 2017-08-07 | A kind of forestry machinery oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207018295U true CN207018295U (en) | 2018-02-16 |
Family
ID=61478362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720977568.8U Active CN207018295U (en) | 2017-08-07 | 2017-08-07 | A kind of forestry machinery oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207018295U (en) |
-
2017
- 2017-08-07 CN CN201720977568.8U patent/CN207018295U/en active Active
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