CN211059110U - Balance oil cylinder - Google Patents
Balance oil cylinder Download PDFInfo
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- CN211059110U CN211059110U CN201921378693.2U CN201921378693U CN211059110U CN 211059110 U CN211059110 U CN 211059110U CN 201921378693 U CN201921378693 U CN 201921378693U CN 211059110 U CN211059110 U CN 211059110U
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- piston rod
- cylinder body
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- piston
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Abstract
The utility model discloses a balance oil cylinder, including cylinder body and piston rod, sliding connection between piston rod and the cylinder body, cylinder body inner wall upper end is equipped with annular protrusion, and the outer face of cylinder of piston rod is sealed to be cooperated with annular protrusion inner wall, the cylinder body lower extreme is equipped with the connector, and the connector is connected with the equalizer through oil pipe, and hydraulic oil extrudes the piston rod from the cylinder body, and the piston belongs to wearing parts, does not need to set up the piston, has increased oil cylinder life; meanwhile, only the outer cylindrical surface of the piston rod of the balance oil cylinder needs to be subjected to finish machining, the inner wall of the cylinder body of the balance oil cylinder does not need to be machined, the machining difficulty is reduced, the practicability is good, the precision of the machined outer cylindrical surface of the piston rod is higher, the abrasion of a sealing ring is reduced, and the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the hydro-cylinder technique and specifically relates to a balanced hydro-cylinder.
Background
A hydraulic cylinder is a linear actuator whose output force is proportional to the effective area of the piston and the pressure difference across it. 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.
However, the existing oil cylinder has the following problems that 1, the piston is a wearing part and short in service life, the piston is easy to wear after long-time use, the oil leakage situation can occur, a circulating pump needs to be added after oil leakage, so that the oil can be recycled, the cost is high, and 2, the processing difficulty of the inner wall of the cylinder body of the existing oil cylinder is high, and the processing cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a balance oil cylinder, which does not need to be provided with a piston, takes out a wearing part and prolongs the service life; meanwhile, only the outer cylindrical surface of the piston rod of the balance oil cylinder needs to be subjected to finish machining, the inner wall of the cylinder body of the balance oil cylinder does not need to be machined, the machining difficulty is reduced, and the practicability is good.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a balance cylinder, includes cylinder body and piston rod, sliding connection between piston rod and the cylinder body, cylinder body inner wall upper end is equipped with annular protrusion, and the outer face of cylinder of piston rod is in sealed cooperation with the protruding inner wall of annular, the cylinder body lower extreme is equipped with the connector, and the connector passes through oil pipe and is connected with the equalizer, the piston rod upper end is equipped with the universal joint.
Furthermore, a sealing ring is arranged on the inner wall of the annular bulge.
Furthermore, a connecting plate is arranged on the cylinder body.
Furthermore, the lower end of the universal joint shell is provided with a nut, the upper end of the piston rod is provided with a first screw rod, and the first screw rod is in threaded connection with the nut.
Furthermore, a second screw is arranged on the universal joint ball head.
The utility model has the advantages that:
1. the utility model discloses be equipped with annular bulge in cylinder body inner wall upper end, the outer face of cylinder of piston rod is sealed to be cooperated with annular bulge inner wall, the cylinder body lower extreme is equipped with the connector, and the connector is connected with the equalizer through oil pipe, and hydraulic oil extrudes the piston rod from the cylinder body in, and the piston belongs to vulnerable part, need not set up the piston, has increased hydro-cylinder life; meanwhile, only the outer cylindrical surface of the piston rod of the balance oil cylinder needs to be subjected to finish machining, the inner wall of the cylinder body of the balance oil cylinder does not need to be machined, the machining difficulty is reduced, the precision of the machined outer cylindrical surface of the piston rod is higher, the abrasion of a sealing ring is reduced, and the service life is prolonged.
2. The utility model discloses be equipped with the universal joint on the piston rod, universal energy-conserving enough assurance piston rod atress direction is piston rod axis direction, prevents to lead to the sealing washer wearing and tearing serious because of the power slope that the piston rod received, increase life-span.
3. The utility model discloses be equipped with the connecting plate on the cylinder body, the connecting plate is the cylinder body of easy to assemble, and the practicality is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the present invention.
In the figure: the oil pipe balance device comprises a cylinder body 1, a piston rod 2, an annular bulge 3, a connector 4, an oil pipe 5, a balancer 6, a universal joint 7, a sealing ring 8, a connecting plate 9, a nut 10, a first screw rod 11 and a second screw rod 12.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a balance oil cylinder comprises a cylinder body 1 and a piston rod 2, wherein the piston rod 2 is in sliding connection with the cylinder body 1, an annular protrusion 3 is arranged at the upper end of the inner wall of the cylinder body 1, the outer cylindrical surface of the piston rod 2 is in sealing fit with the inner wall of the annular protrusion 3, a connector 4 is arranged at the lower end of the cylinder body 1, the connector 4 is connected with a balancer 6 through an oil pipe 5, a universal joint 7 is arranged at the upper end of the piston rod 2, the balancer 6 presses hydraulic oil into the cylinder body 1 through the oil pipe 5, the piston 2 is pressed out of the cylinder body 1 by the hydraulic oil due to the sealing fit of the annular protrusion 3 and the outer cylindrical surface of the piston rod 2; meanwhile, only the outer cylindrical surface of the piston rod of the balance oil cylinder needs to be subjected to finish machining, the inner wall of the cylinder body of the balance oil cylinder does not need to be machined, the machining difficulty is reduced, the precision of the machined outer cylindrical surface of the piston rod is higher, the abrasion of a sealing ring is reduced, and the service life is prolonged.
As shown in fig. 2, a sealing ring 8 is arranged on the inner wall of the annular protrusion 3.
As shown in fig. 1, the cylinder body 1 is provided with a connecting plate 9, the connecting plate 9 facilitates installation of the cylinder body 1, and the practicability is good.
As shown in fig. 2, a nut 10 is arranged at the lower end of the outer shell of the universal joint 7, the nut 10 is fixed at the lower end of the outer shell of the universal joint 7, a first screw rod 11 is arranged at the upper end of the piston rod 2, and the first screw rod 11 is in threaded connection with the nut 10. The universal joint 7 is provided with a second screw 12 on the ball head, the second screw 12 is connected with the movable part, the universal joint 7 can ensure that the stress direction of the piston rod 2 is the axial direction of the piston rod 2, and the phenomenon that the abrasion of the sealing ring is serious because the piston rod is inclined due to the stress is prevented, so that the service life is prolonged.
In the description of the present invention, it should be noted that the terms "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically or electrically connected, directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (3)
1. The utility model provides a balance cylinder, includes cylinder body (1) and piston rod (2), sliding connection between piston rod (2) and the cylinder body (1), its characterized in that, cylinder body (1) inner wall upper end is equipped with annular arch (3), and piston rod (2) outer face of cylinder and annular arch (3) inner wall seal fit, cylinder body (1) lower extreme is equipped with connector (4), and connector (4) are connected with equalizer (6) through oil pipe (5), piston rod (2) upper end is equipped with universal joint (7), universal joint (7) shell lower extreme is equipped with nut (10), and piston rod (2) upper end is equipped with first screw rod (11), first screw rod (11) and nut (10) threaded connection, be equipped with second screw rod (12) on universal joint (7) bulb.
2. A balancing cylinder according to claim 1, characterized in that the inner wall of the annular elevation (3) is provided with a sealing ring (8).
3. A balancing cylinder according to claim 1, characterized in that the cylinder body (1) is provided with a connecting plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378693.2U CN211059110U (en) | 2019-08-23 | 2019-08-23 | Balance oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378693.2U CN211059110U (en) | 2019-08-23 | 2019-08-23 | Balance oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211059110U true CN211059110U (en) | 2020-07-21 |
Family
ID=71595675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921378693.2U Active CN211059110U (en) | 2019-08-23 | 2019-08-23 | Balance oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211059110U (en) |
-
2019
- 2019-08-23 CN CN201921378693.2U patent/CN211059110U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |