CN204419752U - A kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance - Google Patents
A kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance Download PDFInfo
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- CN204419752U CN204419752U CN201520055327.9U CN201520055327U CN204419752U CN 204419752 U CN204419752 U CN 204419752U CN 201520055327 U CN201520055327 U CN 201520055327U CN 204419752 U CN204419752 U CN 204419752U
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- hydraulic cylinder
- oil hydraulic
- round pool
- miniature round
- piston
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Abstract
The utility model relates to a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.Its technological scheme is: gap delta=10 ~ 15 μm of piston (1) outer wall of described oil hydraulic cylinder and cylinder barrel (3) inwall of oil hydraulic cylinder.Miniature round pool (2) is provided with at the inwall of the outer wall of piston (1) or the cylinder barrel (3) of oil hydraulic cylinder, miniature round pool (2) equidistantly distributes in the axial direction and along the circumferential direction, miniature round pool (2) spacing l=40 ~ 60 μm in the axial direction and along the circumferential direction.Described miniature round pool (2) is the circular micro-hole of variable diameters, near coal-mine diameter d=(0.4 ~ 0.6) l of each miniature round pool, degree of depth h=(0.2 ~ 0.4) d of each miniature round pool.Circular micro-hole (2) cross section contour be radially the shape of falling normal distribution curve, multi-section circular arc shape and parabola shaped in one.Described oil hydraulic cylinder is single-piston-rod hydraulic cylinder or is hydraulic cylinder with double piston rods.The utility model has the advantages that frictional force is little, wear extent is little, dynamic response is high and leakage rate is low.
Description
Technical field
the utility model belongs to low friction hydraulic cylinder technical field.Particularly relate to a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.
Background technique
Oil hydraulic cylinder is one of main executive component of Hydraulic Power Transmission System, and it is that the pressure energy of fluid is converted to mechanical energy, realizes the energy conversion device of linear reciprocating motion or swing, is also apply maximum executive components in hydraulic system.Existing oil hydraulic cylinder contacts with the sealing between piston and mostly is seal ring and seals and contact, and the sealing of this form adds the resistance of piston rod movement, adds the wearing and tearing between Barrel of Hydraulic Cylinders inwall and piston, makes the dynamic characteristic of oil hydraulic cylinder be difficult to improve.
Existing Gap Sealing Technology is on piston face, have several balancing slits, and its Main Function makes Radial pressure distribution even, and reduce hydraulic card clamping force, the centering of piston in oil hydraulic cylinder is good simultaneously." oil hydraulic cylinder of clearance type piston seal " (CN200820204905.0) discloses and has some balancing slits at piston face, to reduce the resistance that wearing and tearing between piston and inner wall of cylinder and balancing slit are formed, minimizing is revealed and also has certain effect, but also there is certain shortcoming in this mode, as wear extent under fast state is still larger, during pressure increase, leakage rate also can increase, and the piston of balancing slit form is not obvious to the raising role of oil hydraulic cylinder frequency response.
In sum, there are the following problems for existing oil hydraulic cylinder: the shortcoming that frictional force is large, wear extent is large, frequency response is low and leakage rate is large.
Summary of the invention
The utility model is intended to overcome above-mentioned technological deficiency, and object is to provide the oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance that a kind of frictional force is little, wear extent is little, dynamic response is high and leakage rate is low.
For achieving the above object, the technical solution adopted in the utility model is: the gap of the piston outer wall of described oil hydraulic cylinder and the inner wall of cylinder of oil hydraulic cylinder
δ=10 ~ 15 μm.Be provided with miniature round pool at the inwall of the outer wall of piston or the cylinder barrel of oil hydraulic cylinder, described miniature round pool equidistantly distributes in the axial direction and along the circumferential direction, miniature round pool spacing in the axial direction and along the circumferential direction
l=40 ~ 60 μm.
Described miniature round pool is the circular micro-hole of variable diameters, the near coal-mine diameter of each miniature round pool
d=(0.4 ~ 0.6)
l, the degree of depth of each miniature round pool
h=(0.2 ~ 0.4)
d.Miniature round pool cross section contour be radially the shape of falling normal distribution curve, multi-section circular arc shape and parabola shaped in one.
Described oil hydraulic cylinder is single-piston-rod hydraulic cylinder or is hydraulic cylinder with double piston rods.
The utility model compared with prior art tool has the following advantages:
The utility model is processed with miniature round pool in the inner wall of cylinder of oil hydraulic cylinder or the outer wall of piston, in oil hydraulic cylinder start-up course, can provide lubricating oil, avoid the formation of dry friction.
The utility model is processed with miniature round pool in the inner wall of cylinder of oil hydraulic cylinder or the outer wall of piston, can hold abrasive dust in hydraulic cylinder process, avoids the formation of three body frictions, reduces the wearing and tearing between Barrel of Hydraulic Cylinders inwall and piston.
The utility model is processed with miniature round pool in the inner wall of cylinder of oil hydraulic cylinder or the outer wall of piston, in the reciprocatory movement of oil hydraulic cylinder, can form hydrodynamic lubrication, improves lubricating status, reduce friction.
The utility model is processed with miniature round pool in the inner wall of cylinder of oil hydraulic cylinder or the outer wall of piston, in high speed piston motion and heavy loads, can reduce the internal leakage of the flow of oil hydraulic cylinder.
The utility model is processed with miniature round pool in the inner wall of cylinder of oil hydraulic cylinder or the outer wall of piston, effectively can reduce the friction factor between the inwall of cylinder barrel and the outer wall of piston, improves the frequency response of oil hydraulic cylinder.
Therefore, the utility model has the advantages that frictional force is little, wear extent is little, dynamic response is high and leakage rate is low.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is another kind of structural representation of the present utility model;
Fig. 3 is the cross section contour of the miniature round pool 2 of close-up schematic view I in Fig. 1 is the schematic diagram of falling normal distribution curve;
Fig. 4 is the cross section contour of the miniature round pool 2 of close-up schematic view I in Fig. 1 is parabolical schematic diagram;
The schematic diagram of Fig. 5 to be the cross section contour of the miniature round pool 2 of close-up schematic view I in Fig. 1 be multi-section circular arc line.
Embodiment
below in conjunction with the drawings and specific embodiments, the utility model will be further described, the restriction not to its protection domain.
embodiment 1
a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.The gap of piston 1 outer wall of described oil hydraulic cylinder and cylinder barrel 3 inwall of oil hydraulic cylinder
δ=10 ~ 15 μm.As shown in Figure 1, be provided with miniature round pool 2 at the inwall of the cylinder barrel 3 of oil hydraulic cylinder, described miniature round pool 2 equidistantly distributes in the axial direction and along the circumferential direction, miniature round pool 2 spacing in the axial direction and along the circumferential direction
l=40 ~ 50 μm.
As shown in Figure 3, described miniature round pool 2 is the circular micro-hole of variable diameters, the near coal-mine diameter of each miniature round pool
d=(0.4 ~ 0.5)
l, the degree of depth of each miniature round pool
h=(0.2 ~ 0.3)
d.Miniature round pool 2 cross section contour is radially the shape of falling normal distribution curve.
Described oil hydraulic cylinder is single-piston-rod hydraulic cylinder.
embodiment 2
a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.The gap of piston 1 outer wall of described oil hydraulic cylinder and cylinder barrel 3 inwall of oil hydraulic cylinder
δ=10 ~ 15 μm.As shown in Figure 1, be provided with miniature round pool 2 at the inwall of the cylinder barrel 3 of oil hydraulic cylinder, miniature round pool 2 equidistantly distributes in the axial direction and along the circumferential direction, described miniature round pool 2 spacing in the axial direction and along the circumferential direction
l=50 ~ 60 μm.
As shown in Figure 4, described miniature round pool 2 is the circular micro-hole of variable diameters, the near coal-mine diameter of each miniature round pool
d=(0.5 ~ 0.6)
l, the degree of depth of each miniature round pool
h=(0.3 ~ 0.4)
d.Described miniature round pool 2 cross section contour is radially parabola shaped.
Described oil hydraulic cylinder is hydraulic cylinder with double piston rods.
embodiment 3
a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.Except following technical parameter, all the other are with embodiment 1.
As shown in Figure 5, described miniature round pool 2 cross section contour multi-section circular arc shape radially.
Described oil hydraulic cylinder is single-piston-rod hydraulic cylinder.
embodiment 4
a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.The gap of piston 1 outer wall of described oil hydraulic cylinder and cylinder barrel 3 inwall of oil hydraulic cylinder
δ=10 ~ 15 μm.As shown in Figure 2, be provided with miniature round pool 2 at hydraulic cylinder piston 1 outer wall, miniature round pool 2 equidistantly distributes in the axial direction and along the circumferential direction, described miniature round pool 2 spacing in the axial direction and along the circumferential direction
l=40 ~ 50 μm.
Described miniature round pool 2 is the circular micro-hole of variable diameters, the near coal-mine diameter of each miniature round pool
d=(0.4 ~ 0.5)
l, the degree of depth of each miniature round pool
h=(0.2 ~ 0.3)
d.Miniature round pool 2 cross section contour is radially the shape of falling normal distribution curve.
Described oil hydraulic cylinder is single-piston-rod hydraulic cylinder.
embodiment 5
a kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance.The gap of piston 1 outer wall of described oil hydraulic cylinder and cylinder barrel 3 inwall of oil hydraulic cylinder
δ=10 ~ 15 μm.As shown in Figure 2, be provided with miniature round pool 2 at hydraulic cylinder piston 1 outer wall, miniature round pool 2 equidistantly distributes in the axial direction and along the circumferential direction, described miniature round pool 2 spacing in the axial direction and along the circumferential direction
l=50 ~ 60 μm.
Described miniature round pool 2 is the circular micro-hole of variable diameters, the near coal-mine diameter of each miniature round pool
d=(0.5 ~ 0.6)
l, the degree of depth of each miniature round pool
h=(0.3 ~ 0.4)
d.Described miniature round pool 2 cross section contour be radially multi-section circular arc shape and parabola shaped in one.
Described oil hydraulic cylinder is hydraulic cylinder with double piston rods.
this embodiment compared with prior art tool has the following advantages:
This embodiment is processed with miniature round pool 2 at cylinder barrel 3 inwall of oil hydraulic cylinder or the outer wall of piston 1, in oil hydraulic cylinder start-up course, can provide lubricating oil, avoid the formation of dry friction.
This embodiment is processed with miniature round pool 2 at cylinder barrel 3 inwall of oil hydraulic cylinder or the outer wall of piston 1, can hold abrasive dust in hydraulic cylinder process, avoids the formation of three body frictions, reduces the wearing and tearing between Barrel of Hydraulic Cylinders inwall and piston.
This embodiment is processed with miniature round pool 2 at cylinder barrel 3 inwall of oil hydraulic cylinder or the outer wall of piston 1, in the reciprocatory movement of oil hydraulic cylinder, can form hydrodynamic lubrication, improves lubricating status, reduce friction.
This embodiment is processed with miniature round pool 2 at cylinder barrel 3 inwall of oil hydraulic cylinder or the outer wall of piston 1, in piston 1 high-speed motion and heavy loads, can reduce the internal leakage of the flow of oil hydraulic cylinder.
This embodiment is processed with miniature round pool 2 at cylinder barrel 3 inwall of oil hydraulic cylinder or the outer wall of piston 1, effectively can reduce the friction factor between the inwall of cylinder barrel 3 and the outer wall of piston 1, improves the frequency response of oil hydraulic cylinder.
Therefore, this embodiment has the advantages that frictional force is little, wear extent is little, dynamic response is high and leakage rate is low.
Claims (2)
1., based on an oil hydraulic cylinder for Surface Texture hydrodynamic lubrication performance, it is characterized in that the gap of piston (1) outer wall of described oil hydraulic cylinder and cylinder barrel (3) inwall of oil hydraulic cylinder
δ=10 ~ 15 μm; Miniature round pool (2) is provided with at the inwall of the outer wall of piston (1) or the cylinder barrel (3) of oil hydraulic cylinder, miniature round pool (2) equidistantly distributes in the axial direction and along the circumferential direction, described miniature round pool (2) spacing in the axial direction and along the circumferential direction
l=40 ~ 60 μm;
Described miniature round pool (2) is the circular micro-hole of variable diameters, the near coal-mine diameter of each miniature round pool
d=(0.4 ~ 0.6)
l, the degree of depth of each miniature round pool
h=(0.2 ~ 0.4)
d; Miniature round pool (2) cross section contour be radially the shape of falling normal distribution curve, multi-section circular arc shape and parabola shaped in one.
2. the oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance according to claim 1, is characterized in that described oil hydraulic cylinder is single-piston-rod hydraulic cylinder or is hydraulic cylinder with double piston rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055327.9U CN204419752U (en) | 2015-01-27 | 2015-01-27 | A kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055327.9U CN204419752U (en) | 2015-01-27 | 2015-01-27 | A kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419752U true CN204419752U (en) | 2015-06-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520055327.9U Withdrawn - After Issue CN204419752U (en) | 2015-01-27 | 2015-01-27 | A kind of oil hydraulic cylinder based on Surface Texture hydrodynamic lubrication performance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564901A (en) * | 2015-01-27 | 2015-04-29 | 武汉科技大学 | Low-friction hydraulic cylinder based on mini-type round pits |
| WO2017100914A1 (en) * | 2015-12-15 | 2017-06-22 | Industries Mailhot Inc. | Hybrid surface finish for a hydraulic linear sealing system |
| CN112610484A (en) * | 2020-12-29 | 2021-04-06 | 珠海格力电器股份有限公司 | Pump body assembly and fluid machine |
| CN112610492A (en) * | 2020-12-29 | 2021-04-06 | 珠海格力电器股份有限公司 | Pump body assembly and fluid machine |
| CN112664458A (en) * | 2020-12-29 | 2021-04-16 | 珠海格力电器股份有限公司 | Rotary cylinder compressor |
| CN114458715A (en) * | 2022-01-14 | 2022-05-10 | 清华大学 | Magnetorheological damper based on surface texture |
-
2015
- 2015-01-27 CN CN201520055327.9U patent/CN204419752U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564901A (en) * | 2015-01-27 | 2015-04-29 | 武汉科技大学 | Low-friction hydraulic cylinder based on mini-type round pits |
| CN104564901B (en) * | 2015-01-27 | 2016-08-24 | 武汉科技大学 | A kind of low friction hydraulic cylinder based on miniature round pool |
| WO2017100914A1 (en) * | 2015-12-15 | 2017-06-22 | Industries Mailhot Inc. | Hybrid surface finish for a hydraulic linear sealing system |
| US11009050B2 (en) | 2015-12-15 | 2021-05-18 | Industries Mailhot Inc. | Hybrid surface finish for a hydraulic linear sealing system |
| CN112610484A (en) * | 2020-12-29 | 2021-04-06 | 珠海格力电器股份有限公司 | Pump body assembly and fluid machine |
| CN112610492A (en) * | 2020-12-29 | 2021-04-06 | 珠海格力电器股份有限公司 | Pump body assembly and fluid machine |
| CN112664458A (en) * | 2020-12-29 | 2021-04-16 | 珠海格力电器股份有限公司 | Rotary cylinder compressor |
| CN114458715A (en) * | 2022-01-14 | 2022-05-10 | 清华大学 | Magnetorheological damper based on surface texture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |