CN219865708U - Novel hydraulic cylinder capable of preventing piston rod from rotating - Google Patents
Novel hydraulic cylinder capable of preventing piston rod from rotating Download PDFInfo
- Publication number
- CN219865708U CN219865708U CN202321185410.9U CN202321185410U CN219865708U CN 219865708 U CN219865708 U CN 219865708U CN 202321185410 U CN202321185410 U CN 202321185410U CN 219865708 U CN219865708 U CN 219865708U
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- rod
- guide
- piston rod
- side wall
- piston
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- 238000007789 sealing Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The novel hydraulic cylinder capable of preventing the piston rod from rotating is characterized in that a screw rod for screwing is machined in the middle of the right rod end of the guide rod, the guide rod enters an oil chamber from a circular inlet of the cylinder body and is in fastening connection with a bolt hole on the right side wall of the oil chamber through the screw rod; the side wall of the guide rod is cut with a guide key groove; the middle part of the right rod end of the piston rod is provided with a hollowed sleeve hole, the right side wall of the piston rod is fastened with a flat key through a bolt, the right rod end of the piston rod sleeved with the piston enters the oil cavity from the circular inlet of the cylinder body, the sleeve hole of the piston rod can be sleeved into the guide rod, and the bottom of the flat key fastened on the right side wall of the piston rod can be embedded into the guide key groove of the side wall of the guide rod; the guide rod, the guide key groove on the side wall of the guide rod and the flat key are combined to form a linear guide mechanism. The piston rod of the utility model does not axially rotate when the piston rod is extended/retracted, and the link of installing the anti-rotation rod on the outer side of the piston rod is omitted, thereby saving space.
Description
Technical Field
The utility model belongs to the field of hydraulic cylinders, and relates to a novel hydraulic cylinder capable of preventing a piston rod from rotating.
Background
The piston rod of the hydraulic cylinder commonly used in the prior art can rotate around the axial direction in addition to the axial movement in the cylinder barrel. When the hydraulic cylinder is applied to the positioning of the fixture, the piston rod of the hydraulic cylinder is required to be unable to axially rotate, and in order to prevent the situation, a device for preventing the piston rod from rotating is usually added outside the hydraulic cylinder, but in the occasion of limited installation space, enough space is not available for adding the device for preventing the piston rod from rotating.
Disclosure of Invention
In order to solve the above problems, the present utility model provides a novel hydraulic cylinder capable of preventing a piston rod from rotating, the piston rod of which does not axially rotate when performing an extension/retraction operation, which omits a step of installing an anti-rotation rod at the outer side of the piston rod, thereby saving space.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the novel hydraulic cylinder capable of preventing the piston rod from rotating mainly comprises a piston rod, an end cover, a cylinder body, a piston, a guide rod and a flat key, and is characterized in that,
the cylinder body is hollow to form an oil chamber, the middle part of the left side surface of the cylinder body is hollow to form a circular inlet, the circular inlet is communicated with the oil chamber, two oil holes are drilled in the side wall of the cylinder body, and the oil holes are communicated with the oil chamber;
a bolt hole is drilled in the middle of the right side wall of the oil chamber;
the middle part of the right rod end of the guide rod is provided with a screw rod for screwing through a lathe, the guide rod enters the oil chamber from a circular inlet of the cylinder body and is in fastening connection with a bolt hole on the right side wall of the oil chamber through the screw rod;
the side wall of the guide rod is cut with a guide key groove through a lathe;
the middle part of the right rod end of the piston rod is provided with a hollowed sleeve hole through a lathe, the aperture of the sleeve hole is larger than the rod diameter of the guide rod, and the right side wall of the piston rod is fastened with a flat key through a bolt;
the periphery of the right rod end of the piston rod is sleeved with a piston;
the right rod end of the piston rod sleeved with the piston enters the oil chamber from the circular inlet of the cylinder body, the sleeve hole of the piston rod can be sleeved into the guide rod, and the bottom of the flat key fastened on the right side wall of the piston rod can be embedded into the guide key groove on the side wall of the guide rod;
the guide rod, the guide key groove on the side wall of the guide rod and the flat key are combined to form a linear guide mechanism;
the periphery of the left rod end of the piston rod is sleeved with an end cover, and the end cover is tightly blocked at the circular inlet of the cylinder body through bolts.
The guide rod is static, the linear guide mechanism is used for guiding the piston rod and the piston to realize axial action in the oil chamber through oil pressure transformation, and the linear guide mechanism can effectively avoid the problem that the piston rod axially rotates when the piston rod axially moves in an extending or retracting mode.
The utility model has the advantages that the piston rod of the utility model does not axially rotate when the piston rod is extended/retracted, and the link of installing the anti-rotation rod outside the piston rod is omitted, thereby saving space.
The utility model is described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a side view of the overall composite structure of the present utility model;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1.
In the figure: 1-cylinder body, 11-oil chamber, 12-oilhole, 2-piston rod, 21-flat key, 22-trepanning, 3-piston, 4-guide bar, 41-guide keyway, 5-end cover.
Detailed Description
As shown in fig. 1 and 2, a novel hydraulic cylinder capable of preventing a piston rod from rotating mainly comprises a piston rod 2, an end cover 5, a cylinder body 1, a piston 3, a guide rod 4 and a flat key 21, and is characterized in that,
the cylinder body 1 is hollow to form an oil chamber 11, the middle part of the left side surface of the cylinder body 1 is hollowed to form a circular inlet, the circular inlet is communicated with the oil chamber 11, two oil holes 12 are drilled in the side wall of the cylinder body 1, and the oil holes 12 are communicated with the oil chamber 11;
a key hole is drilled in the middle of the right side wall of the oil chamber 11;
a screw rod for screwing is processed in the middle of the right rod end of the guide rod 4, the guide rod 4 enters the oil chamber 11 from the circular inlet of the cylinder body 1 and is in fastening connection with a bolt hole on the right side wall of the oil chamber 11 through the screw rod;
the side wall of the guide rod 4 is cut with a guide key groove 41;
the middle part of the right rod end of the piston rod 2 is provided with a hollowed sleeve hole 22, the aperture of the sleeve hole 22 is larger than the rod diameter of the guide rod 4, and the right side wall of the piston rod 2 is fastened with a flat key 21 through a bolt;
the periphery of the right rod end of the piston rod 2 is sleeved with a piston 3 through a sealing ring, and the periphery of the piston 3 is sleeved with a sealing ring and an oil seal;
the right rod end of the piston rod 2 sleeved with the piston 3 enters the oil chamber 11 from the circular inlet of the cylinder body 1, the sleeve hole of the piston rod 2 can be sleeved into the guide rod 4, and the bottom of the flat key 21 fastened on the right side wall of the piston rod 2 can be embedded into the guide key groove 41 on the side wall of the guide rod 4;
the guide rod 4, the guide key groove 41 on the side wall of the guide rod 4 and the flat key 21 are combined to form a linear guide mechanism;
the periphery of the left rod end of the piston rod 2 is sleeved with an end cover 5 through a sealing ring and an oil seal, the periphery of the end cover 5 is sleeved with the sealing ring and the oil seal, and the end cover 5 is tightly plugged at the circular inlet of the cylinder body 1 through bolts.
Claims (1)
1. The novel hydraulic cylinder capable of preventing the piston rod from rotating mainly comprises a piston rod (2), an end cover (5), a cylinder body (1), a piston (3), a guide rod (4) and a flat key (21), and is characterized in that,
the cylinder body (1) is hollow to form an oil chamber (11), the middle part of the left side surface of the cylinder body (1) is hollow to form a circular inlet, the circular inlet is communicated with the oil chamber (11), two oil holes (12) are drilled in the side wall of the cylinder body (1), and the oil holes (12) are communicated with the oil chamber (11);
a key hole is drilled in the middle of the right side wall of the oil chamber (11);
a screw rod for screwing is processed in the middle of the right rod end of the guide rod (4), the guide rod (4) enters the oil chamber (11) from a circular inlet of the cylinder body (1) and is in fastening connection with a bolt hole on the right side wall of the oil chamber (11) through the screw rod;
a guide key groove (41) is cut on the side wall of the guide rod (4);
the middle part of the right rod end of the piston rod (2) is provided with a hollowed sleeve hole (22), the aperture of the sleeve hole (22) is larger than the rod diameter of the guide rod (4), and the right side wall of the piston rod (2) is fastened with a flat key (21) through a bolt;
the periphery of the right rod end of the piston rod (2) is sleeved with a piston (3);
the right rod end of the piston rod (2) sleeved with the piston (3) enters the oil chamber (11) from the circular inlet of the cylinder body (1), the sleeve hole of the piston rod (2) can be sleeved with the guide rod (4) and the bottom of the flat key (21) fastened on the right side wall of the piston rod (2) can be embedded into the guide key groove (41) on the side wall of the guide rod (4);
the guide rod (4), the guide key groove (41) on the side wall of the guide rod (4) and the flat key (21) are combined to form a linear guide mechanism;
the periphery of the left rod end of the piston rod (2) is sleeved with an end cover (5), and the end cover (5) is tightly blocked at the circular inlet of the cylinder body (1) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321185410.9U CN219865708U (en) | 2023-05-17 | 2023-05-17 | Novel hydraulic cylinder capable of preventing piston rod from rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321185410.9U CN219865708U (en) | 2023-05-17 | 2023-05-17 | Novel hydraulic cylinder capable of preventing piston rod from rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865708U true CN219865708U (en) | 2023-10-20 |
Family
ID=88322738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321185410.9U Active CN219865708U (en) | 2023-05-17 | 2023-05-17 | Novel hydraulic cylinder capable of preventing piston rod from rotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865708U (en) |
-
2023
- 2023-05-17 CN CN202321185410.9U patent/CN219865708U/en active Active
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