CN108533570B - Oil cylinder of excavator bucket - Google Patents
Oil cylinder of excavator bucket Download PDFInfo
- Publication number
- CN108533570B CN108533570B CN201810730664.1A CN201810730664A CN108533570B CN 108533570 B CN108533570 B CN 108533570B CN 201810730664 A CN201810730664 A CN 201810730664A CN 108533570 B CN108533570 B CN 108533570B
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- CN
- China
- Prior art keywords
- guide sleeve
- sealing gasket
- bucket cylinder
- cavity
- piston rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a bucket cylinder of an excavator, which comprises a bucket cylinder barrel, a guide sleeve, a piston rod, an O-shaped ring, wherein the guide sleeve is arranged at the end part of the bucket cylinder barrel through a mounting screw rod, used for sealing between the bucket cylinder barrel and the guide sleeve, the uppermost part of the guide sleeve connected with the piston rod is provided with a dustproof ring, an upper guide sleeve and a lower guide sleeve are arranged below the dust ring, an oil inlet channel is arranged on the guide sleeve, the oil inlet channel is in the shape of 1/4 circular arcs taking the point A on the bucket cylinder barrel as the center of a circle, an upper sealing cushion cavity and a lower sealing cushion cavity are arranged between the upper guide sleeve and the lower guide sleeve, an upper sealing washer is arranged in the upper sealing washer, a lower sealing washer is arranged in the lower sealing washer cavity, and the interface of the upper sealing washer and the lower sealing washer is in an equilateral hexagon shape. The invention has the beneficial effects that: the sealing washer is not easy to deform in long-term use, and the phenomenon of oil leakage is effectively reduced.
Description
Technical Field
The invention belongs to the field of excavators, and particularly relates to an excavator bucket oil cylinder.
Background
The bucket cylinder in the excavator consists of a bucket cylinder barrel, a guide sleeve and a piston rod, wherein the guide sleeve is arranged at the front end of the bucket cylinder barrel and matched with the piston rod, and the guide sleeve has the functions of guiding, sealing oil, limiting stroke and the like. Because the oil seal between the guide sleeves can be worn and deformed due to long-term use, the oil leakage phenomenon of the guide sleeves can be caused, and the reason for the oil leakage of the guide sleeves is mainly because the design of a sealing part is unreasonable.
The invention content is as follows:
the present invention has been made to solve the above-mentioned problems,
the excavator bucket cylinder is provided, the bucket cylinder comprises a bucket cylinder barrel 1, a guide sleeve 2 and a piston rod 3, the guide sleeve 2 is installed at the end part of the bucket cylinder barrel 1 through an installation screw rod 4, an O-shaped ring 5 is further arranged on the bucket cylinder barrel 1 and used for sealing between the bucket cylinder barrel 1 and the guide sleeve 2, a dustproof ring 6 is arranged at the uppermost position of the connection between the guide sleeve 2 and the piston rod 3, an upper guide sleeve 7 and a lower guide sleeve 8 are arranged below the dustproof ring 6, an oil inlet channel 9 is arranged on the guide sleeve 2, the oil inlet channel 9 is in the shape of 1/4 circular arc with the point A on the bucket cylinder barrel 1 as the circle center, an upper sealing gasket cavity 10 and a lower sealing gasket cavity 12 are arranged between the upper guide sleeve 7 and the lower guide sleeve 8, an upper sealing gasket 11 is arranged in the upper sealing gasket 10, and a lower sealing gasket 13 is arranged in the lower sealing gasket cavity 12, the interface of the upper sealing gasket 11 and the lower sealing gasket 13 is in an equilateral hexagon shape.
Furthermore, one surface of the upper seal washer 11 abuts against the piston rod 3, a surface parallel to the one surface abuts against a vertical wall of the upper seal cavity 10, and surfaces parallel to each other of the upper seal cavity 10 abut against two opposite vertexes of the equilateral hexagon respectively.
Further, one surface of the lower seal ring 13 abuts against the piston rod 3, a surface parallel to the one surface abuts against a vertical wall of the lower seal cavity 12, and surfaces parallel to each other of the upper seal cavity 12 abut against two opposite vertexes of the equilateral hexagon respectively.
The invention has the beneficial effects that: the sealing washer is not easy to deform in long-term use, and the phenomenon of oil leakage is effectively reduced.
Description of the drawings:
FIG. 1 is a schematic view of a bucket cylinder guide sleeve structure;
FIG. 2 is a partial schematic view of a bucket cylinder guide sleeve;
in the figure, a bucket cylinder barrel 1, a guide sleeve 2, a piston rod 3, a mounting screw rod 4, an O-shaped ring 5, a dust ring 6, an upper guide sleeve 7, a lower guide sleeve 8, an oil inlet channel 9, an upper sealing gasket cavity 10, an upper sealing gasket 11, a lower sealing gasket cavity 12 and a lower sealing gasket 13 are arranged.
The specific implementation mode is as follows:
the invention will be further explained with reference to the drawings.
As shown in fig. 1-2, the present invention provides an excavator bucket cylinder, the bucket cylinder includes a bucket cylinder barrel 1, a guide sleeve 2, a piston rod 3, the guide sleeve 2 is mounted at the end of the bucket cylinder barrel 1 through a mounting screw 4, the bucket cylinder barrel 1 is further provided with an O-ring 5 for sealing between the bucket cylinder barrel 1 and the guide sleeve 2, the uppermost part of the guide sleeve 2 connected with the piston rod 3 is provided with a dust ring 6, an upper guide sleeve 7 and a lower guide sleeve 8 are arranged below the dust ring 6, the guide sleeve 2 is provided with an oil inlet channel 9, the oil inlet channel 9 is in the shape of 1/4 arc with a point a on the bucket cylinder barrel 1 as the center of circle, an upper seal cushion cavity 10 and a lower seal cushion cavity 12 are arranged between the upper guide sleeve 7 and the lower guide sleeve 8, an upper seal gasket 11 is arranged in the upper seal gasket 10, and a lower sealing gasket 13 is arranged in the lower sealing gasket cavity 12, and the interface of the upper sealing gasket 11 and the lower sealing gasket 13 is in an equilateral hexagon shape.
One surface of the upper sealing gasket 11 abuts against the piston rod 3, a surface parallel to the one surface abuts against a vertical wall of the upper sealing gasket cavity 10, and surfaces parallel to each other of the upper sealing gasket cavity 10 abut against two opposite vertexes of the equilateral hexagon respectively.
One surface of the lower sealing washer 13 abuts against the piston rod 3, a surface parallel to the one surface abuts against a vertical wall of the lower sealing cushion cavity 12, and surfaces parallel to each other of the upper sealing cushion cavity 12 abut against two opposite vertexes of the equilateral hexagon respectively.
The sealing device is characterized in that the interface of an upper sealing washer 11 and a lower sealing washer 13 is set to be an equilateral hexagon, one surface of the upper sealing washer 11 is abutted against a piston rod 3, the surface parallel to the one surface is abutted against the vertical wall of an upper sealing washer cavity 10, the surfaces parallel to each other of the upper sealing washer cavity 10 are respectively abutted against two opposite vertexes of the equilateral hexagon, one surface of the lower sealing washer 13 is abutted against the piston rod 3, the surface parallel to the one surface is abutted against the vertical wall of a lower sealing washer cavity 12, the surfaces parallel to each other of the upper sealing washer cavity 12 are respectively abutted against two opposite vertexes of the equilateral hexagon, the sealing performance of the sealing washer and the piston rod can be ensured by the design, the sealing performance of the sealing washer and the piston rod can be ensured in the telescopic process of the piston rod 3 by the vertexes of the equilateral hexagon and the mutually parallel surfaces of the sealing washer cavity, and the sealing washer can be quickly recovered after deformation occurs by the design, the oil leakage can not be caused, the sealing performance is better than that of an ordinary sealing washer, the sealing washer can be effectively prevented from deforming through the butting on the top point in the motion process of the piston rod, good contact between the sealing washer and the piston rod is guaranteed, and the oil inlet channel 9 is set to be 1/4 circular arc, so that the loss of oil at the inflection point can be effectively reduced.
The invention has the beneficial effects that: the sealing washer is not easy to deform in long-term use, and the phenomenon of oil leakage is effectively reduced.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (1)
1. The utility model provides an excavator bucket hydro-cylinder, the bucket hydro-cylinder includes bucket cylinder (1), uide bushing (2), piston rod (3) uide bushing (2) are installed at the tip of bucket cylinder (1) through installation screw rod (4), its characterized in that: the bucket cylinder barrel (1) is also provided with an O-shaped ring (5) for sealing between the bucket cylinder barrel (1) and the guide sleeve (2), the uppermost part of the guide sleeve (2) connected with the piston rod (3) is provided with a dustproof ring (6), an upper guide sleeve (7) and a lower guide sleeve (8) are arranged below the dust ring (6), an oil inlet channel (9) is arranged on the guide sleeve (2), the oil inlet channel (9) is in the shape of 1/4 circular arcs with the point A on the bucket cylinder barrel (1) as the center of a circle, an upper sealing cushion cavity (10) and a lower sealing cushion cavity (12) are arranged between the upper guide sleeve (7) and the lower guide sleeve (8), an upper sealing gasket (11) is arranged in the upper sealing gasket (10), a lower sealing gasket (13) is arranged in the lower sealing gasket cavity (12), the interface of the upper sealing gasket (11) and the lower sealing gasket (13) is in an equilateral hexagon shape;
one surface of the upper sealing gasket (11) abuts against the piston rod (3), a surface parallel to the one surface abuts against the vertical wall of the upper sealing gasket cavity (10), and surfaces parallel to each other of the upper sealing gasket cavity (10) abut against two opposite vertexes of the equilateral hexagon respectively;
one surface of the lower sealing gasket (13) abuts against the piston rod (3), the surface parallel to the one surface abuts against the vertical wall of the lower sealing gasket cavity (12), and the surfaces parallel to each other of the upper sealing gasket cavity (12) abut against two opposite vertexes of the equilateral hexagon respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730664.1A CN108533570B (en) | 2018-07-05 | 2018-07-05 | Oil cylinder of excavator bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730664.1A CN108533570B (en) | 2018-07-05 | 2018-07-05 | Oil cylinder of excavator bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108533570A CN108533570A (en) | 2018-09-14 |
| CN108533570B true CN108533570B (en) | 2020-10-30 |
Family
ID=63487648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810730664.1A Active CN108533570B (en) | 2018-07-05 | 2018-07-05 | Oil cylinder of excavator bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108533570B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493969A (en) * | 2011-12-19 | 2012-06-13 | 宁波千普机械制造有限公司 | Hydraulic cylinder with double piston rods |
| CN202580319U (en) * | 2012-03-20 | 2012-12-05 | 辽宁远东新型管业发展有限公司 | Hexagonal sealing ring |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4930403A (en) * | 1989-01-13 | 1990-06-05 | Royce Husted | Directionally controlled hydraulic cylinder |
| JPH09287668A (en) * | 1996-04-19 | 1997-11-04 | Mitsubishi Heavy Ind Ltd | Sealing device |
| CN201531483U (en) * | 2009-11-05 | 2010-07-21 | 浙江正洲泵阀制造有限公司 | Single-acting fast closing/double-acting boosting hydraulic cylinder |
| CN103267041B (en) * | 2013-05-31 | 2016-02-03 | 潍坊亿宏重工机械有限公司 | Constant pressure oil cylinder |
| CN203384155U (en) * | 2013-07-17 | 2014-01-08 | 浙江诺力机械股份有限公司 | Oil cylinder |
| CN104595488A (en) * | 2014-12-31 | 2015-05-06 | 江苏安德信超导加速器科技有限公司 | Ultralow-temperature and ultra-vacuum aluminum-magnesium alloy sealing ring |
-
2018
- 2018-07-05 CN CN201810730664.1A patent/CN108533570B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493969A (en) * | 2011-12-19 | 2012-06-13 | 宁波千普机械制造有限公司 | Hydraulic cylinder with double piston rods |
| CN202580319U (en) * | 2012-03-20 | 2012-12-05 | 辽宁远东新型管业发展有限公司 | Hexagonal sealing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108533570A (en) | 2018-09-14 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200923 Address after: 243000 Anhui city of Ma'anshan province high tech Zone at 1669 North Road Huo sparkle Building No. 2 Applicant after: MAANSHAN NIUZE TECHNOLOGY SERVICE Co.,Ltd. Address before: 243000 room 9, Building 102, clear water bay area, Yucheng District, Ma'anshan, Anhui Applicant before: Yi Jie |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210203 Address after: 225200 Wujian Industrial Park, Jiangdu District, Yangzhou City, Jiangsu Province Patentee after: JIANGSU KUNTAI TECHNOLOGY Co.,Ltd. Address before: 243000 2, 1669 north section of Huo Li Shan Road, Ma'anshan high tech Zone, Anhui Patentee before: MAANSHAN NIUZE TECHNOLOGY SERVICE Co.,Ltd. |