CN215214178U - Hydraulic cylinder with woven structure on inner surface of cylinder barrel - Google Patents
Hydraulic cylinder with woven structure on inner surface of cylinder barrel Download PDFInfo
- Publication number
- CN215214178U CN215214178U CN202120723140.7U CN202120723140U CN215214178U CN 215214178 U CN215214178 U CN 215214178U CN 202120723140 U CN202120723140 U CN 202120723140U CN 215214178 U CN215214178 U CN 215214178U
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- China
- Prior art keywords
- piston
- cylinder
- piston rod
- ring
- support ring
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- 238000007789 sealing Methods 0.000 claims abstract description 43
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 23
- 238000005299 abrasion Methods 0.000 description 7
- -1 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Abstract
The utility model relates to a surface texture pneumatic cylinder in cylinder, which comprises a hydraulic cylinder, piston support ring and piston rod support ring, the cylinder internal surface of pneumatic cylinder is equipped with the oil storage tank, the oil storage tank is netted arranging along the cylinder internal surface, the piston support ring is established respectively in the both sides of sealing member, two piston support rings cup joint on the piston, the piston rod support ring is established respectively in the both sides of piston rod sealing washer, two piston rod support rings all establish in the guiding hole of uide bushing and cup joint on the piston rod, reduce the friction of piston rod sealing washer and sealing member respectively through the application of piston support ring and piston rod support ring, and then guarantee the axiality of piston and cylinder, the axiality of piston rod and cylinder, prevent the beat of pneumatic cylinder flexible process, the life of extension pneumatic cylinder; the utility model discloses a characteristics such as possess simple structure, the protection is effectual, the practicality is strong.
Description
Technical Field
The utility model relates to a pneumatic cylinder field, more specifically says that it relates to a surface texture type pneumatic cylinder in cylinder.
Background
The hydraulic cylinder is an actuating element of a hydraulic system, bears the movement of pushing load and adjusts the movement speed of the load, the performance of the hydraulic cylinder is good and bad and directly influences the normal work of the hydraulic system, the inner wall of the existing hydraulic cylinder is processed into a smooth structure in order to reduce friction force, the processing precision and the surface smoothness are extremely high, dry friction can be generated at the position of a local friction pair during working, in order to solve the dry friction, a grid oil storage tank is processed on the inner surface of a cylinder barrel of the existing hydraulic cylinder, the oil storage tank can store oil, when a piston reciprocates, the oil in the tank is taken out, the lubricating performance of the friction pair is increased, and the friction pair generating the dry friction mainly comprises: and the sealing ring is arranged in the sealing ring of the piston, the inner wall of the cylinder barrel, the outer wall of the piston rod and the guide hole of the guide sleeve.
The above scheme has the defects that: the piston still has abrasion with the seal ring in the guide sleeve in the long-time friction process, especially the seal ring in the guide sleeve is more serious under the lubrication action without oil, if the abrasion of the seal ring of the piston increases the internal leakage, the volume efficiency of the hydraulic cylinder is reduced, the running speed and the thrust are reduced, the hydraulic cylinder can not work when serious, and thus the seal ring is replaced or the cylinder barrel is repaired according to the situation, and the maintenance cost is increased; in addition, the coaxiality of the piston and the cylinder barrel and the coaxiality of the piston rod and the cylinder barrel are reduced, so that the hydraulic cylinder deflects in the expansion and contraction process, the other parts of the hydraulic cylinder are abraded, and the service life of the hydraulic cylinder is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a hydraulic cylinder with a woven structure on the inner surface of a cylinder barrel, wherein piston support rings are arranged on two sides of a sealing element and provide support for the sealing element, so that the extrusion and friction of the sealing element in the motion process of a piston are reduced; piston rod sealing washer both sides set up piston rod support ring, and piston rod support ring provides the support for piston rod sealing washer, reduces in the piston rod motion process to piston rod sealing washer's extrusion and friction, and this utility model possesses simple structure, and the protection is effectual, characteristics that the practicality is strong.
The above technical purpose of the present invention can be achieved by the following technical solutions: the hydraulic cylinder comprises a hydraulic cylinder body, piston support rings and piston rod support rings, wherein an oil storage groove is formed in the inner surface of the cylinder body of the hydraulic cylinder body, the oil storage groove is arranged in a net shape along the inner surface of the cylinder body, the piston support rings are respectively arranged on two sides of a sealing piece, the two piston support rings are sleeved on a piston, the piston rod support rings are respectively arranged on two sides of a piston rod sealing ring, and the two piston rod support rings are respectively arranged in a guide hole of a guide sleeve and sleeved on a piston rod.
In one embodiment, the sealing element is a sliding ring sealing ring, and the section of a sliding ring of the sliding ring sealing ring is rectangular; the slip ring of the slip ring sealing ring has good friction performance.
In one embodiment, the slip ring is made of polytetrafluoroethylene; the polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-sticking property and good ageing resistance.
In one embodiment, the piston support ring, the piston rod support ring and the ring wall of the sliding ring are provided with seamless inclined notches; the seamless oblique notch is not only beneficial to installation, but also can ensure the sealing performance.
In one embodiment, the angle of the seamless oblique notch of the slip ring is 45-60 degrees on the basis of a horizontal plane, and the angle of the seamless oblique notch of each of the piston support ring 4 and the piston support ring 6 is 30-45 degrees.
In one embodiment, the piston support ring and the piston rod support ring are made of nodular cast iron; the ductile iron has small friction coefficient, good lubricating property and long service life.
In one embodiment, the depth of the oil storage tank is 0.01-0.1 mm; the oil storage tank with the depth of 0.01-0.1 mm can realize good oil storage and can also guarantee that the volume efficiency of the hydraulic cylinder is guaranteed if the hydraulic cylinder cannot generate large internal leakage, and further guarantee the running speed and the thrust of the hydraulic cylinder.
In one embodiment, the oil storage tank is in a diamond shape or a thread shape; the oil storage tank with the corresponding shape is selected according to the processing conditions, so that the processing time can be saved, and the processing cost can be reduced.
To sum up, the utility model discloses following beneficial effect has: the friction between the piston rod sealing ring and the sealing piece is respectively reduced through the application of the piston supporting ring and the piston rod supporting ring, so that the coaxiality of the piston and the cylinder barrel and the coaxiality of the piston rod and the cylinder barrel are ensured, the deflection of the hydraulic cylinder in the stretching process is prevented, and the service life of the hydraulic cylinder is prolonged.
Drawings
Fig. 1 is a schematic view of the present invention;
FIG. 2 is a simplified diagram of the cylinder barrel of the hydraulic cylinder of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of B of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a front view of the piston support ring of the present invention;
FIG. 7 is a top view of the piston support ring of the present invention;
FIG. 8 is a front view of the piston rod supporting ring of the present invention;
FIG. 9 is a top view of the piston rod supporting ring of the present invention;
FIG. 10 is a front view of a slip ring in the seal of the present invention;
figure 11 is a top view of a slip ring in the seal of the present invention.
In the figure: 1-pressing a cylinder; 2-a piston support ring; 3-a piston rod support ring; 4-a seal; 5-piston rod sealing ring; 6-a guide sleeve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
Referring to fig. 1-11, a cylinder having a woven inner surface, comprising: pneumatic cylinder 1, piston support ring 2 and piston rod support ring 3, the cylinder internal surface of pneumatic cylinder 1 is equipped with the oil storage tank, the oil storage tank is netted arranging along the cylinder internal surface, and the arrangement of oil storage tank is various, can be arrangement such as heliciform range, piston support ring 2 establishes respectively in the both sides of sealing member 4, and is concrete, and two piston support ring 2 symmetries set up in the both sides of sealing member 4, two piston support ring 2 cup joints on the piston, piston support ring 3 establishes respectively in piston rod seal ring 5's both sides, and is concrete, and two piston support ring 3 symmetries set up in piston rod seal ring 5's both sides, two piston support ring 3 all establishes in the guiding hole of uide bushing 6 and cup joints on the piston rod.
In the above embodiment, when hydraulic oil is introduced into an oil inlet at the bottom of the cylinder barrel, the piston rod extends out, at this time, the two piston support rings 2 and the sealing piece 4 are pushed together with the piston and generate friction with the inner wall of the cylinder barrel, because the inner wall of the cylinder barrel is provided with the oil storage groove which stores the hydraulic oil, the piston and the sealing piece 4 carry the oil out of the groove in the movement process, the lubrication performance of a friction pair is increased, the abrasion is reduced, and the dynamic characteristic is improved, in addition, the two piston support rings 2 support the sealing piece 2 at two sides of the sealing piece 4, and in the process that the two piston support rings 2 and the sealing piece 4 are pushed together with the piston, the two piston support rings 2 and the sealing piece 4 are simultaneously extruded by the piston, the compression strength of the sealing piece 4 is reduced, and the friction and the abrasion of the sealing piece 4 are reduced; in the same way, in the pushing process of the piston rod, the two piston rod support rings 3 and the piston rod sealing ring 5 are simultaneously extruded by the piston rod, so that the compression strength of the piston rod sealing ring 5 is reduced, and the friction and the abrasion of the piston rod sealing ring 5 are reduced.
In one embodiment, the sealing element 4 is a sliding ring sealing ring, and the section of a sliding ring of the sliding ring sealing ring is rectangular; specifically, a slip ring seal includes a standard "O" ring and an anti-friction seal on the friction side, which is the slip ring, the slip ring of the slip ring seal having good anti-friction properties.
In one embodiment, the slip ring is made of polytetrafluoroethylene; because the frequent reciprocating motion of the piston can cause the abrasion of the slip ring, the material of the slip ring is polytetrafluoroethylene because the polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-adhesiveness and good ageing resistance, so the service life of the slip ring made of the polytetrafluoroethylene is longer.
In one embodiment, the piston support ring 2, the piston rod support ring 3 and the ring wall of the sliding ring are provided with seamless inclined notches; when the piston support ring 2 needs to be sleeved on the piston, the piston rod support ring 3 needs to be sleeved on the piston rod, and the sliding ring needs to be sleeved on the piston seal, the inclined notches of the piston support ring 2, the piston rod support ring 3 and the sliding ring are opened, and then the corresponding positions of the corresponding parts are directly sleeved in without escaping from the end parts of the parts and moving to the corresponding positions.
In one embodiment, the angle of the seamless oblique notch of the slip ring is 45-60 degrees on the basis of a horizontal plane, and the angle of the seamless oblique notch of the piston support ring 2 and the angle of the seamless oblique notch of the piston support ring 3 are both 30-45 degrees.
In one embodiment, the piston support ring 2 and the piston rod support ring 3 are made of nodular cast iron; because the piston support ring 2 and the piston rod support ring 3 can generate friction in the operation process of the hydraulic cylinder, the nodular cast iron has the characteristics of small friction coefficient and good lubricating property, can better adapt to the friction condition, and reduces the abrasion speed.
In one embodiment, the depth of the oil storage tank is 0.01-0.1 mm; the oil storage tank with the depth of 0.01-0.1 mm can realize good oil storage and simultaneously can ensure that the hydraulic cylinder does not generate large internal leakage, the volume efficiency of the hydraulic cylinder is ensured, and the running speed and the thrust of the hydraulic cylinder are further ensured.
In one embodiment, the oil storage tank is in a diamond shape or a thread shape; specifically, when the oil storage tank is a rhombus, the distance between two adjacent rhombuses is 0.05-0.15 mm, the short diagonal line of the rhombus is 0.8-1.2 mm, and the long diagonal line of the rhombus is 1-1.5 mm.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The hydraulic cylinder is characterized by comprising a hydraulic cylinder (1), piston support rings (2) and piston rod support rings (3), wherein an oil storage groove is formed in the inner surface of the cylinder barrel of the hydraulic cylinder (1), the oil storage groove is arranged in a net shape along the inner surface of the cylinder barrel, the piston support rings (2) are respectively arranged on two sides of a sealing element (4), the two piston support rings (2) are sleeved on a piston, the piston rod support rings (3) are respectively arranged on two sides of a piston rod sealing ring (5), and the two piston rod support rings (3) are respectively arranged in a guide hole of a guide sleeve (6) and are sleeved on a piston rod.
2. A cylinder having a woven inner surface as claimed in claim 1, wherein the sealing element (4) is a slide ring seal, the slide ring of which has a rectangular cross-section.
3. The cylinder of claim 2, wherein the slip ring is made of ptfe.
4. A cylinder having a woven inner surface as claimed in claim 2 or 3, characterized in that the walls of the piston support ring (2), the piston support ring (3) and the slide ring are provided with a mitre-cut-free cut.
5. The cylinder tube inner surface weave type hydraulic cylinder according to claim 4, wherein the angle of the miter cut of the slide ring is 45 ° to 60 ° with respect to the horizontal plane, and the angle of the miter cut of the piston support ring (2) and the angle of the miter cut of the piston support ring (3) are both 30 ° to 45 °.
6. The cylinder with internal surface texture as claimed in claim 5, characterized in that the piston support ring (2) and the piston rod support ring (3) are made of nodular cast iron.
7. The cylinder of claim 1, wherein the oil reservoir has a depth of 0.01 to 0.1 mm.
8. The cylinder of claim 1 or 7, wherein said reservoir is diamond-shaped or threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120723140.7U CN215214178U (en) | 2021-04-09 | 2021-04-09 | Hydraulic cylinder with woven structure on inner surface of cylinder barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120723140.7U CN215214178U (en) | 2021-04-09 | 2021-04-09 | Hydraulic cylinder with woven structure on inner surface of cylinder barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215214178U true CN215214178U (en) | 2021-12-17 |
Family
ID=79446144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120723140.7U Expired - Fee Related CN215214178U (en) | 2021-04-09 | 2021-04-09 | Hydraulic cylinder with woven structure on inner surface of cylinder barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215214178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458715A (en) * | 2022-01-14 | 2022-05-10 | 清华大学 | Magnetorheological damper based on surface texture |
-
2021
- 2021-04-09 CN CN202120723140.7U patent/CN215214178U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458715A (en) * | 2022-01-14 | 2022-05-10 | 清华大学 | Magnetorheological damper based on surface texture |
| CN114458715B (en) * | 2022-01-14 | 2023-03-24 | 清华大学 | Magnetorheological damper based on surface texture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211217 |