CN217029477U - Improved sealing type excavator oil cylinder - Google Patents
Improved sealing type excavator oil cylinder Download PDFInfo
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- CN217029477U CN217029477U CN202123371316.6U CN202123371316U CN217029477U CN 217029477 U CN217029477 U CN 217029477U CN 202123371316 U CN202123371316 U CN 202123371316U CN 217029477 U CN217029477 U CN 217029477U
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- cylinder
- cylinder barrel
- sealing ring
- cylinder cover
- wedge
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Abstract
The utility model relates to an improved sealed excavator oil cylinder. The device comprises a cylinder barrel and a head cylinder cover arranged at the opening of the cylinder barrel, a bottom cylinder cover is arranged at the bottom of the cylinder barrel, connecting parts are arranged on the inner end faces of the head cylinder cover and the bottom cylinder cover, wedge-shaped faces are arranged on the side eaves of the two end faces of the cylinder barrel, a first sealing ring is embedded on the inner wall of the free end of the vertical section of the connecting part, the first sealing ring is abutted on the side eaves of the inner end face of the cylinder barrel, a second sealing ring is embedded at the joint of the horizontal section and the vertical section of the connecting part, the second sealing ring is abutted on the joint of the wedge-shaped face and the end face of the cylinder barrel, a third sealing ring is embedded on the inner side of the horizontal section, the third sealing ring is abutted on the surface of the wedge-shaped face, the device is in the process of pulling connection through a screw rod, the horizontal section of the connecting part moves forwards along the wedge-shaped face, so that the gap between the cylinder cover and the cylinder barrel is small, the corresponding sealing ring is extruded more and more tightly, the tightness between the cylinder barrel and the cylinder cover is greatly improved, is suitable for industrial production and has strong practicability.
Description
Technical Field
The utility model belongs to the technical field of oil cylinders, and particularly relates to an improved sealing type excavator oil cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The buffer device and the exhaust device are determined according to specific application occasions, and other devices are necessary.
If the sealing structure cannot bear high pressure, oil leakage of the hydraulic cylinder is caused, pressure is insufficient, and irreparable effects can occur in severe cases.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the oil leakage condition of the cylinder barrel and the cylinder cover of the existing oil cylinder is serious, the sealing performance is poor, and in order to overcome the defects, the utility model provides an improved sealing type excavator oil cylinder.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
an improved sealing type excavator oil cylinder comprises a cylinder barrel and a head cylinder cover arranged at an opening of the cylinder barrel, wherein a piston rod is inserted on the head cylinder cover in a sliding mode, one end of the piston rod is positioned outside the cylinder barrel, the other end of the piston rod extends into the cylinder barrel and is connected with a piston, a bottom cylinder cover is arranged at the bottom of the cylinder barrel, connecting parts with L-shaped sections are arranged on the inner end faces of the head cylinder cover and the bottom cylinder cover, wedge faces are arranged on the edge eaves of two end faces of the cylinder barrel, a first sealing ring is embedded on the inner wall of the free end of a vertical section of each connecting part, the first sealing ring is abutted on the edge eaves of the inner side of the cylinder barrel end face, a second sealing ring is embedded at the connecting part of the horizontal section of each connecting part and the vertical section, the second sealing ring is abutted on the connecting part of the wedge faces and the end face of the cylinder barrel, the inner side of the horizontal section of each connecting part is obliquely arranged, and a third sealing ring is embedded inside the horizontal section, the third sealing ring is abutted against the surface of the wedge-shaped surface.
Preferably, an oil-resistant rubber pad is attached to the wedge-shaped surface.
Preferably, the outer edge of the head cylinder cover is provided with a plurality of first through holes, the bottom cylinder cover opposite to each first through hole is provided with a second through hole, and each first through hole is connected with the corresponding second through hole in a pulling mode through a screw rod.
Preferably, the inner surface of the head cylinder cover attached to the piston rod is provided with oil retaining rings at intervals.
Preferably, the free end of the piston rod positioned outside the cylinder barrel is connected with an ear ring, and the outer end face of the bottom cylinder cover is connected with a hinged joint.
Compared with the prior art, the utility model has the beneficial effects that: because the setting of first sealing washer, second sealing washer, third sealing washer and connecting portion is provided with sealedly at cylinder and the key connecting portion position of cylinder cap, draws the in-process that connects through the screw rod, and the connecting portion horizontal segment is along the antedisplacement of wedge for the gap between cylinder cap and the cylinder is more and more little, thereby extrudees the sealing washer that corresponds tighter, has greatly improved the leakproofness between cylinder and the cylinder cap, and the device is applicable to industrial production, has very strong practicality.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1 cylinder, 2 head cylinder covers, 3 piston rods, 4 pistons, 5 bottom cylinder covers, 6 connecting portions, 7 first sealing rings, 8 second sealing rings, 9 third sealing rings, 10 wedge-shaped surfaces, 11 oil-resistant rubber pads, 12 screw rods, 13 oil baffle rings, 14 earrings and 15 hinges.
Detailed Description
The technical solution of the present application will be further described and explained with reference to the accompanying drawings and embodiments.
As shown in the figure 1-2, the improved sealing excavator oil cylinder comprises a cylinder barrel 1 and a head cylinder cover 2 arranged at the opening of the cylinder barrel 1, a piston rod 3 is inserted on the head cylinder cover 2 in a sliding way, one end of the piston rod 3 is positioned outside the cylinder barrel 1, the other end extends into the cylinder barrel 1 and is connected with a piston 4, a bottom cylinder cover 5 is arranged at the bottom of the cylinder barrel 1, connecting parts 6 with L-shaped sections are arranged on the inner end surfaces of the head cylinder cover 2 and the bottom cylinder cover 5, wedge-shaped surfaces 10 are arranged on the side edges of the two end surfaces of the cylinder barrel 1, a first sealing ring 7 is embedded on the inner wall of the free end of the vertical section of the connecting part 6, the first sealing ring 7 is abutted on the side edge of the end surface of the cylinder barrel 1, a second sealing ring 8 is embedded at the joint of the horizontal section of the connecting part 6 and the vertical section, the second sealing ring 8 is abutted on the joint of the wedge-shaped surface 10 and the end surface of the cylinder barrel 1, the inner side of the horizontal section of the connecting part 6 is arranged in an inclined way, the inner side of the horizontal section is embedded with a third sealing ring 9, and the third sealing ring 9 is abutted against the surface of the wedge-shaped surface 10. An oil-resistant rubber pad 11 is attached to the wedge-shaped surface 10. A plurality of first through holes are formed in the outer edge of the head cylinder cover 2, second through holes are formed in the bottom cylinder cover 5 opposite to the first through holes, and the first through holes and the corresponding second through holes are connected in a pulling mode through screws 12. The inner surface of the head cylinder cover 2 attached to the piston rod 3 is provided with oil retaining rings 13 at intervals. The free end of the piston rod 3 positioned outside the cylinder barrel 1 is connected with an earring 14, and the outer end face of the bottom cylinder cover 5 is connected with a hinge joint 15.
During operation, because the setting of first sealing washer 7, second sealing washer 8, third sealing washer 9 and connecting portion 6 is provided with sealedly at cylinder 1 and the key connecting portion 6 of cylinder cap, through the in-process that screw rod 12 draws and connects, connecting portion 6 horizontal segment is along wedge 10 antedisplacement for the gap between cylinder cap and the cylinder 1 is littleer and littleer, thereby it is tighter to extrude the sealing washer that corresponds, has greatly improved the leakproofness between cylinder 1 and the cylinder cap.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts based on the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (5)
1. An improvement canned type excavator cylinder which characterized in that: comprises a cylinder barrel and a head cylinder cover arranged at the opening of the cylinder barrel, a piston rod is inserted on the head cylinder cover in a sliding way, one end of the piston rod is positioned outside the cylinder barrel, the other end of the piston rod extends into the cylinder barrel and is connected with a piston, the bottom of the cylinder barrel is provided with a bottom cylinder cover, the inner end faces of the head cylinder cover and the bottom cylinder cover are both provided with connecting parts with L-shaped sections, the edges of the two end faces of the cylinder barrel are both provided with wedge-shaped faces, the inner wall of the free end of the vertical section of the connecting part is embedded with a first sealing ring which is pressed against the inner brim of the end surface of the cylinder barrel, a second sealing ring is embedded at the joint of the horizontal section and the vertical section of the connecting part and is abutted against the joint of the wedge-shaped surface and the end surface of the cylinder barrel, the inner side of the horizontal section of the connecting part is obliquely arranged, a third sealing ring is embedded in the inner side of the horizontal section, and the third sealing ring is abutted to the surface of the wedge-shaped surface.
2. The improved sealed excavator cylinder of claim 1, wherein: an oil-resistant rubber pad is attached to the wedge-shaped surface.
3. The improved sealed excavator oil cylinder according to claim 2, wherein: a plurality of first through holes are formed in the outer edge of the head cylinder cover, second through holes are formed in the bottom cylinder cover opposite to the first through holes, and the first through holes and the corresponding second through holes are connected in a pulling mode through screws.
4. The improved sealed excavator cylinder of claim 3, wherein: and oil retaining rings are arranged on the inner surface of the head cylinder cover attached to the piston rod at intervals.
5. An improved sealed excavator oil cylinder according to any one of claims 1 to 4, wherein: the free end of the piston rod positioned outside the cylinder barrel is connected with an earring, and the outer end face of the bottom cylinder cover is connected with a hinged joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123371316.6U CN217029477U (en) | 2021-12-29 | 2021-12-29 | Improved sealing type excavator oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123371316.6U CN217029477U (en) | 2021-12-29 | 2021-12-29 | Improved sealing type excavator oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217029477U true CN217029477U (en) | 2022-07-22 |
Family
ID=82442542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123371316.6U Active CN217029477U (en) | 2021-12-29 | 2021-12-29 | Improved sealing type excavator oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217029477U (en) |
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2021
- 2021-12-29 CN CN202123371316.6U patent/CN217029477U/en active Active
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