CN215718535U - Telescopic oil cylinder centering device - Google Patents
Telescopic oil cylinder centering device Download PDFInfo
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- CN215718535U CN215718535U CN202122465848.XU CN202122465848U CN215718535U CN 215718535 U CN215718535 U CN 215718535U CN 202122465848 U CN202122465848 U CN 202122465848U CN 215718535 U CN215718535 U CN 215718535U
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Abstract
The utility model relates to a centering device, in particular to a centering device for a telescopic oil cylinder. The telescopic oil cylinder centering device comprises a rack, folding arms, tension springs and a cylinder protecting sleeve, wherein the folding arms are respectively arranged on two sides of the rack through pin shafts, a tension spring assembling seat is arranged on the rack below the folding arms, and the tension springs are arranged on the tension spring assembling seat through adjusting bolts; the folding arm end of one side of the pin shaft is provided with a cylinder protective sleeve, and the folding arm end of the other side of the pin shaft is connected with a tension spring. The centering device for the telescopic oil cylinder is simple in structure and convenient to use, and can be used for centering the piston rod of the telescopic oil cylinder, so that eccentric wear between the piston and the inner wall of the cylinder body and eccentric wear between the piston rod and an oil seal can be effectively reduced, and the service life of the telescopic oil cylinder is prolonged; the friction force between the protective cylinder sleeve and the piston rod of the telescopic oil cylinder can be effectively reduced, and the expansion of the piston rod of the telescopic oil cylinder is not easily influenced in the righting process; the problem of telescopic cylinder lead to life to reduce because of the atress reason is solved.
Description
Technical Field
The utility model relates to a centering device, in particular to a centering device for a telescopic oil cylinder.
Background
The telescopic derrick is a device commonly used in workover rigs for replacing an oil pipe and a sucker rod and is divided into an upper derrick body and a lower derrick body which are connected through a telescopic oil cylinder, and the telescopic oil cylinder is used for realizing the telescopic effect. Due to the complexity and uncontrollable working conditions in the underground, when the telescopic derrick works, a piston rod of the telescopic oil cylinder usually needs to bear larger vibration and thrust in all directions. When a piston rod of the telescopic oil cylinder bears radial thrust or component force for a long time, eccentric wear between the piston and the inner wall of the cylinder body and between the piston rod and an oil seal is easily caused, the problem of poor sealing is easily caused, the telescopic oil cylinder is even damaged and cannot be used, and the service life of the telescopic oil cylinder is greatly shortened. Therefore, it is necessary to design a centering device for a telescopic cylinder to solve the above problems.
Disclosure of Invention
The utility model aims to: the telescopic oil cylinder centering device can effectively reduce the radial thrust or component force of the piston rod of the telescopic oil cylinder, and the expansion of the piston rod of the telescopic oil cylinder is not easily influenced, so that the problem that the service life of the telescopic oil cylinder is shortened due to stress is solved.
The technical scheme of the utility model is as follows:
the utility model provides a flexible hydro-cylinder righting device, it comprises frame, folding arm, extension spring assembly seat, extension spring and protective cylinder cover, its characterized in that: folding arms are respectively arranged on two sides of the rack through pin shafts, a tension spring assembly seat is arranged on the rack below the folding arms, and a tension spring is arranged on the tension spring assembly seat through an adjusting bolt; the folding arm end of one side of the pin shaft is provided with a cylinder protective sleeve, and the folding arm end of the other side of the pin shaft is connected with a tension spring.
The folding arm is in a shape of a Chinese character 'ji', a stop lever is arranged on the rack above the pin shaft, and the stop lever is in contact connection with the folding arm.
And a baffle is arranged on the inner side of the folding arm between the cylinder protective sleeve and the pin shaft, and the baffle is in contact connection with the rack.
Further, the protective cylinder sleeve is arc-shaped, circulation grooves are uniformly distributed on the inner side of the protective cylinder sleeve, circulation holes are formed in the protective cylinder sleeve on the outer side of each circulation groove, and the circulation holes are communicated with the circulation grooves; and circulating balls are arranged in the circulating grooves and the circulating holes and protrude out of the circulating grooves.
Furthermore, the inner wall of the circulating groove is arc-shaped, and the opening of the circulating groove is smaller than the diameter of the circulating ball so as to limit the circulating ball in the circulating groove.
The utility model has the beneficial effects that:
the telescopic oil cylinder centering device is simple in structure and convenient to use, and can be used for centering a piston rod of a telescopic oil cylinder by matching a folding arm with a tension spring and a cylinder protecting sleeve, so that the radial thrust and component force applied to the piston rod of the telescopic oil cylinder can be effectively reduced, the eccentric wear of a piston and the inner wall of a cylinder body and the eccentric wear of the piston rod and an oil seal can be effectively reduced, and the service life of the telescopic oil cylinder can be prolonged; the friction force between the protective cylinder sleeve and the piston rod of the telescopic oil cylinder can be effectively reduced by matching the circulating groove with the circulating hole and the circulating ball, so that the expansion of the piston rod of the telescopic oil cylinder is not easily influenced in the righting process; the problem of telescopic cylinder lead to life to reduce because of the atress reason is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic left side view of FIG. 1;
FIG. 3 is a schematic front view of the cylinder liner of the present invention;
FIG. 4 is a schematic top view of the cylinder liner of the present invention;
FIG. 5 is a schematic cross-sectional view of a cylinder liner of the present invention.
In the figure: 1. the device comprises a rack, 2, a folding arm, 3, a tension spring assembly seat, 4, a tension spring, 5, a cylinder protecting sleeve, 6, a pin shaft, 7, an adjusting bolt, 8, a stop lever, 9, a baffle, 10, a circulating groove, 11, a circulating hole, 12 and a circulating ball.
Detailed Description
The telescopic oil cylinder centering device comprises a rack 1, a folding arm 2, a tension spring assembly seat 3, a tension spring 4 and a cylinder protecting sleeve 5, wherein pin shafts 6 are respectively and movably arranged on two sides of the rack 1, the folding arm 2 is arranged on the pin shafts 6, the folding arm 2 is in a shape of a 'shape', a stop lever 8 is arranged on the rack 1 above the pin shafts 6, and the stop lever 8 is in contact connection with the folding arm 2; a tension spring assembly seat 3 is arranged on the machine frame 1 below the folding arm 2, an adjusting bolt 7 is arranged on the tension spring assembly seat 3, and a tension spring 4 is arranged on the adjusting bolt 7; the end of the folding arm 2 at one side of the pin shaft 6 is provided with a cylinder protective sleeve 5, and the cylinder protective sleeve 5 is arc-shaped; the end of the folding arm 2 at the other side of the pin shaft 6 is connected with the tension spring 4; a baffle 9 is arranged on the inner side of the folding arm 2 between the cylinder protective sleeve 5 and the pin shaft 6, and the baffle 9 is in contact connection with the rack 1; the tension spring 4 is used for keeping the position of the folding arm 2 and further keeping the position of the cylinder protecting sleeve 5 through the elasticity of the tension spring 4, so that the cylinder protecting sleeve 5 can right the piston rod of the telescopic oil cylinder, the radial thrust and component force applied to the piston rod of the telescopic oil cylinder can be effectively reduced through the support of the folding arm 2, the eccentric wear of the piston and the inner wall of the cylinder body and the eccentric wear of the piston rod and an oil seal can be effectively reduced, and the service life of the telescopic oil cylinder is prolonged; the folding arm 2 has the functions that on one hand, a piston rod of the telescopic oil cylinder is righted through the support of the cylinder protective sleeve 5, and on the other hand, when the upper derrick body and the lower derrick body of the telescopic derrick slide, the folding arm 2 is folded towards two sides of the frame 1, so that the mutual interference of the folding arm 2 and the upper derrick body and the lower derrick body can be avoided; the adjusting bolt 7 is used for adjusting the elasticity of the tension spring 4 by adjusting the adjusting bolt 7, so as to adjust the tension on the folding arm 7; the baffle 9 is used for limiting the position of the folding arm 2, so that the folding arm 2 on one side of the baffle 9 can be kept horizontal under the action of the tension spring 4, and the cylinder protective sleeves 5 on the folding arms 2 on two sides of the rack 1 can be in a clasping state, so that a piston rod of the telescopic oil cylinder is righted; the stop lever 8 is used for positioning the position of the folding arm 2, so that the folding arm 2 can position the position of the folding arm 2 when being folded, the folding arm 2 can be in a vertical state, and the folding arm 2 is further ensured not to be easily interfered with the derrick upper body and the derrick lower body.
As an improvement, the inner side of the cylinder protective sleeve 5 is uniformly provided with circulating grooves 10, and the circulating grooves 10 are arranged along the axial direction; a circulating hole 11 is formed in the protective cylinder sleeve 5 on the outer side of the circulating groove 10, and the circulating hole 11 is communicated with the circulating groove 10; circulating balls 12 are arranged in the circulating groove 10 and the circulating holes 11, and the circulating balls 12 protrude out of the circulating groove 10; the inner wall of the circulation groove 10 is arc-shaped, and the opening of the circulation groove 10 is smaller than the diameter of the circulation ball 12 so as to limit the circulation ball 12 in the circulation groove 10; the circulating ball 12 has the function that in the process of extending and retracting the piston rod of the telescopic oil cylinder, the sliding friction between the piston rod of the telescopic oil cylinder and the cylinder protecting sleeve 5 is changed into the rolling friction between the piston rod of the telescopic oil cylinder and the circulating ball 12 through the rolling of the circulating ball 12, so that the friction force on the piston rod of the telescopic oil cylinder is effectively reduced, the influence of the cylinder protecting sleeve 5 on the piston rod of the telescopic oil cylinder in the axial direction is effectively reduced in the process of righting the piston rod of the telescopic oil cylinder by the cylinder protecting sleeve 5, and the extension and retraction of the piston rod of the telescopic oil cylinder are not easily influenced; the circulation groove 10 is used for limiting the position of the circulation ball 12, so that the circulation ball 12 can only move in the circulation groove 10 and the circulation hole 11 and can not be separated from the circulation groove 10; the circulating hole 11 is matched with the circulating groove 10, so that the circulating ball 12 can circulate between the circulating groove 10 and the circulating hole 11, the circulating ball 12 can roll continuously, and the circulating ball 12 and a piston rod of the telescopic oil cylinder are always in rolling friction.
When the telescopic oil cylinder centering device is used, the folding arm 2 is loosened, after the folding arm 2 is loosened, the end head of the folding arm 2 moves towards the piston rod of the telescopic oil cylinder by taking the pin shaft 6 as an axis under the action of the tension spring 4, so that the protective cylinder sleeve 5 at the end head of the folding arm 2 is encircled on the piston rod of the telescopic oil cylinder, and the piston rod of the telescopic oil cylinder is centered.
The telescopic oil cylinder centering device is simple in structure and convenient to use, a piston rod of the telescopic oil cylinder can be centered through the folding arm 2 in cooperation with the tension spring 4 and the cylinder protection sleeve 5, and further, radial thrust and component force applied to the piston rod of the telescopic oil cylinder can be effectively reduced, so that eccentric wear of the piston and the inner wall of a cylinder body and eccentric wear of the piston rod and an oil seal can be effectively reduced, and the service life of the telescopic oil cylinder is prolonged; the friction force between the cylinder protective sleeve and the piston rod of the telescopic oil cylinder can be effectively reduced by matching the circulating groove 10 with the circulating hole 11 and the circulating ball 12, so that the expansion of the piston rod of the telescopic oil cylinder is not easily influenced in the righting process; the problem of telescopic cylinder lead to life to reduce because of the atress reason is solved.
Claims (5)
1. The utility model provides a flexible hydro-cylinder righting device, it comprises frame (1), folding arm (2), extension spring assembly seat (3), extension spring (4) and protective cylinder cover (5), its characterized in that: folding arms (2) are respectively installed on two sides of the rack (1) through pin shafts (6), a tension spring assembling seat (3) is arranged on the rack (1) below the folding arms (2), and a tension spring (4) is installed on the tension spring assembling seat (3) through an adjusting bolt (7); a cylinder protective sleeve (5) is arranged at the end of the folding arm (2) at one side of the pin shaft (6), and the end of the folding arm (2) at the other side of the pin shaft (6) is connected with the tension spring (4).
2. The telescopic cylinder righting device according to claim 1, characterized in that: the folding arm (2) is in a shape of 'T', a stop lever (8) is arranged on the rack (1) above the pin shaft (6), and the stop lever (8) is in contact connection with the folding arm (2).
3. The telescopic cylinder righting device according to claim 1, characterized in that: the baffle (9), baffle (9) and frame (1) contact are connected.
4. The telescopic cylinder righting device according to claim 3, characterized in that: the protective cylinder sleeve (5) is arc-shaped, the inner side of the protective cylinder sleeve (5) is uniformly provided with circulating grooves (10), circulating holes (11) are formed in the protective cylinder sleeve (5) on the outer side of each circulating groove (10), and the circulating holes (11) are communicated with the circulating grooves (10); circulating balls (12) are arranged in the circulating groove (10) and the circulating holes (11), and the circulating balls (12) protrude out of the circulating groove (10).
5. The telescopic cylinder righting device according to claim 4, characterized in that: the inner wall of the circulating groove (10) is arc-shaped, and the opening of the circulating groove (10) is smaller than the diameter of the circulating ball (12) so as to limit the circulating ball (12) in the circulating groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122465848.XU CN215718535U (en) | 2021-10-13 | 2021-10-13 | Telescopic oil cylinder centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122465848.XU CN215718535U (en) | 2021-10-13 | 2021-10-13 | Telescopic oil cylinder centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215718535U true CN215718535U (en) | 2022-02-01 |
Family
ID=80028038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122465848.XU Active CN215718535U (en) | 2021-10-13 | 2021-10-13 | Telescopic oil cylinder centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215718535U (en) |
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2021
- 2021-10-13 CN CN202122465848.XU patent/CN215718535U/en active Active
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