CN215908182U - Mechanical self-locking device for oil cylinder - Google Patents
Mechanical self-locking device for oil cylinder Download PDFInfo
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- CN215908182U CN215908182U CN202122398200.5U CN202122398200U CN215908182U CN 215908182 U CN215908182 U CN 215908182U CN 202122398200 U CN202122398200 U CN 202122398200U CN 215908182 U CN215908182 U CN 215908182U
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Abstract
The utility model provides a mechanical self-locking device of an oil cylinder, which comprises a cylinder barrel, a cylinder bottom, a piston rod, a piston and a guide sleeve, wherein a driving oil cavity is formed between the cylinder barrel, the cylinder bottom and the guide sleeve; the self-locking oil cavity is arranged on one side of the driving oil cavity, so that a self-locking piston in the self-locking oil cavity is driven by oil to slide with the piston rod sleeve, the stop gasket is abutted against the inside of the stop ring to be extruded, deformed and locked on the piston rod, the piston rod is locked by the oil pressure and the stop gasket, the locking is firmer, the phenomenon that the piston rod moves under the action of increasing external force is avoided, larger external force can be borne, and the oil cylinder is simple, convenient and quick to lock.
Description
Technical Field
The utility model relates to the field of oil cylinders, in particular to a mechanical self-locking device of an oil cylinder.
Background
The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, and is widely applied to hydraulic systems of various machines.
The existing locking oil cylinder is completed by a hydraulic lock, but the existing locking oil cylinder has large outline dimension and is inconvenient to install under the condition of limited installation space; the locking is not firm, the piston rod is also provided with threads which are locked by nuts, the length is lengthened, the locking is not firm, and the piston rod is displaced under the action of larger external force.
Chinese patent "CN 209800427U" relates to a cylinder that can cushion and stroke is adjustable and has two-way locking function, and this patent drives the lock post to move to the guide sleeve and the lock tooth through oiling to the locking oil port, makes guide sleeve and lock tooth clamp the piston rod simultaneously, but the lock post in this two-way locking mode is sealed poor, leads to locking oil pocket and unblock hydro-cylinder intercommunication, causes the guide sleeve and the lock tooth deformation effect poor, is difficult to produce great locking force.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a mechanical self-locking device for an oil cylinder, which solves the problems of troublesome locking and insufficient firmness of the oil cylinder.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the self-locking oil cylinder comprises a cylinder barrel, a cylinder bottom, a piston rod, a piston and a guide sleeve, wherein a driving oil cavity is formed among the cylinder barrel, the cylinder bottom and the guide sleeve, a self-locking oil cavity is arranged on one side of the driving oil cavity, a self-locking piston and a piston rod sleeve are arranged in the self-locking oil cavity, the self-locking piston and the piston rod sleeve are sleeved on the piston rod to slide, the self-locking piston is fixed at one end of the piston rod sleeve, a stop gasket is fixedly arranged at the other end of the piston rod sleeve, and a stop ring is fixedly arranged at the end part of the cylinder barrel;
the stop washer is under the extrusion effect of check ring in the oil drive slip process so that the piston rod is locked and locked by the stop washer.
In the preferred scheme, a self-locking guide sleeve is fixedly arranged at the end part of the cylinder barrel, the outer wall of the self-locking guide sleeve is in sealing abutment against the inner wall of the cylinder barrel, the inner wall of the self-locking guide sleeve is in sealing abutment against the piston rod sleeve, and a self-locking oil cavity is formed among the guide sleeve, the self-locking guide sleeve and the cylinder barrel.
In the preferred scheme, the self-locking oil cavity is divided into a locking oil cavity and an unlocking oil cavity through a self-locking piston, the locking oil cavity is arranged between the guide sleeve and the self-locking piston, and the unlocking oil cavity is arranged between the self-locking piston and the self-locking guide sleeve.
In the preferred scheme, a self-locking oil inlet and an unlocking oil inlet are arranged on one side of the cylinder barrel, the self-locking oil inlet is communicated with the locking oil cavity, and the unlocking oil inlet is communicated with the unlocking oil cavity.
In the preferred scheme, the stop washer is sleeved on the piston rod, the outer side of the stop washer is conical, the end part of the stop washer is provided with a pressing ring, and the pressing ring fixes the stop washer at the end part of the piston rod through a plurality of bolts.
In the preferred scheme, the conical outer part of the outer side of the stop washer is small and the inner part of the conical outer part of the outer side of the stop washer is large, and the diameter of the inner hole of the stop ring is larger than the minimum diameter of the stop washer and smaller than the maximum diameter of the stop washer;
the stop washer slides into the inner hole of the stop ring to be pressed and deformed to lock the piston rod.
In the preferred scheme, the stop washer is the rubber material, is equipped with a plurality of openings in the periphery of stop washer.
In the preferred scheme, the inner side of the self-locking piston is fixed at one end of the piston rod sleeve through threads, the outer side of the self-locking piston is abutted against the inside of the cylinder barrel in a sealing manner, the inner side of the self-locking piston is abutted against the piston rod sleeve in a sealing manner, and the inner side of the piston rod sleeve is sleeved on the piston rod in a sealing manner to slide.
In the preferred scheme, the inner side of the stop ring is fixed at one end of the cylinder barrel through threads, a step is arranged on one side of the self-locking piston and one side of the self-locking guide sleeve, and the step is positioned on one side of the self-locking oil inlet and one side of the unlocking oil inlet.
The utility model provides a mechanical self-locking device of an oil cylinder, wherein a self-locking oil cavity is arranged on one side of a driving oil cavity, so that a self-locking piston in the self-locking oil cavity is driven by oil to slide along a piston rod sleeve, a stop gasket is abutted against the inside of the stop ring to be extruded, deformed and locked on a piston rod, the piston rod is locked by the oil pressure and the stop gasket, the locking is firmer, the phenomenon that the piston rod moves under the action of increasing external force is avoided, larger external force can be borne, and the oil cylinder is simple, convenient and quick to lock.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is an isometric view of the overall structure of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
FIG. 3 is a front cross-sectional view of the overall structure of the present invention;
FIG. 4 is a front cross-sectional view of the integral locking of the present invention;
in the figure: a cylinder barrel 1; a cylinder bottom 2; a snap ring 3; a piston rod 4; a piston 5; a guide sleeve 6; a self-locking piston 7; a piston rod sleeve 8; a self-locking guide sleeve 9; a stopper washer 10; a pressure ring 11; a first oil inlet 12; a second oil inlet 13; a self-locking oil inlet 14; unblock oil inlet 15.
Detailed Description
Example 1
As shown in fig. 1 to 4, a mechanical self-locking device for an oil cylinder comprises a cylinder barrel 1, a cylinder bottom 2, a piston rod 4, a piston 5 and a guide sleeve 6, wherein a driving oil cavity is formed between the cylinder barrel 1, the cylinder bottom 2 and the guide sleeve 6, a self-locking oil cavity is arranged on one side of the driving oil cavity, a self-locking piston 7 and a piston rod sleeve 8 are arranged in the self-locking oil cavity, the self-locking piston 7 and the piston rod sleeve 8 are sleeved on the piston rod 4 to slide, the self-locking piston 7 is fixed at one end of the piston rod sleeve 8, a stop gasket 10 is fixedly arranged at the other end of the piston rod sleeve 8, and a stop ring 3 is fixedly arranged at the end of the cylinder barrel 1;
the stop washer 10 is pressed by the stop ring 3 during the oil drive sliding process, so that the stop washer 10 locks and locks the piston rod 4. According to the structure, the self-locking piston 7 and the piston rod sleeve 8 slide by injecting oil into the self-locking oil cavity, so that the stop gasket 10 at the end part of the piston rod sleeve 8 is driven to abut against the stop ring 3, the piston rod 4 is locked by deforming and locking the stop gasket 10, the piston rod is locked by using oil pressure and the stop gasket, the locking is firmer, the phenomenon that the piston rod moves under the action of increasing external force is avoided, larger external force can be borne, and the oil cylinder is locked simply, conveniently and quickly.
In the preferred scheme, a self-locking guide sleeve 9 is fixedly arranged at the end part of the cylinder barrel 1, the outer wall of the self-locking guide sleeve 9 is in sealing abutment against the inner wall of the cylinder barrel 1, the inner wall of the self-locking guide sleeve 9 is in sealing abutment against the piston rod sleeve 8, and a self-locking oil cavity is formed among the guide sleeve 6, the self-locking guide sleeve 9 and the cylinder barrel 1. With the structure, the guide sleeve 6, the self-locking guide sleeve 9 and the cylinder barrel 1 are sealed to form a self-locking oil cavity.
In the preferred scheme, the self-locking oil cavity is divided into a locking oil cavity and an unlocking oil cavity through a self-locking piston 7, the locking oil cavity is arranged between the guide sleeve 6 and the self-locking piston 7, and the unlocking oil cavity is arranged between the self-locking piston 7 and the self-locking guide sleeve 9. With this structure, the oil is injected into the lock oil chamber to slide the self-lock piston 7 so that the stopper washer 10 abuts against the inside of the stopper ring 3 to lock the piston rod 4, and the oil is injected into the unlock oil chamber to slide the self-lock piston 7 so that the stopper washer 10 exits the stopper ring 3 to release the piston rod 4.
In the preferred scheme, a self-locking oil inlet 14 and an unlocking oil inlet 15 are arranged on one side of the cylinder barrel 1, the self-locking oil inlet 14 is communicated with the locking oil cavity, and the unlocking oil inlet 15 is communicated with the unlocking oil cavity.
In the preferred scheme, the stop washer 10 is sleeved on the piston rod 4, the outer side of the stop washer 10 is conical, the end part of the stop washer 10 is provided with a pressing ring 11, and the pressing ring 11 fixes the stop washer 10 on the end part of the piston rod 4 through a plurality of bolts. With the structure, the stop washer 10 is fixed at the end part of the piston rod 4 through the press ring 11, so that the installation and the disassembly are simple and convenient, and the locking is more stable and firm.
In a preferable scheme, the conical outer side of the stop washer 10 is small and the inner side is large, and the diameter of the inner hole of the stop ring 3 is larger than the minimum diameter of the stop washer 10 and smaller than the maximum diameter of the stop washer 10;
the stop washer 10 is slid into the inner bore of the stop ring 3 to be pressed and deformed to lock the piston rod 4. With this structure, when the stop washer 10 moves into the inner hole of the stop ring 3, the stop washer 10 is pressed and deformed, thereby locking the piston rod 4.
Preferably, the stopper gasket 10 is made of rubber, and a plurality of openings are formed in the circumference of the stopper gasket 10. With this structure, the plurality of openings in the stopper washer 10 facilitate the pressing deformation of the stopper ring, thereby enabling the locking of the piston rod 4.
In the preferred scheme, the inner side of a self-locking piston 7 is fixed at one end of a piston rod sleeve 8 through threads, the outer side of the self-locking piston 7 is in sealing support against the inside of a cylinder barrel 1, the inner side of the self-locking piston 7 is in sealing support against a piston rod sleeve 8, and the inner side of the piston rod sleeve 8 is in sealing support on a piston rod 4 to slide. By the structure, the threaded connection is convenient to install and detach, and the oil cavity is ensured to be filled with oil and not to leak oil by sealing and sliding.
In a preferable scheme, the inner side of the stop ring 3 is fixed at one end of the cylinder barrel 1 through threads, steps are arranged on one sides of the self-locking piston 7 and the self-locking guide sleeve 9, and the steps are located on one sides of the self-locking oil inlet 14 and the unlocking oil inlet 15. With the structure, when oil is injected from the self-locking oil inlet 14 or the unlocking oil inlet 15, the self-locking piston 7 can be driven to slide through the step, and the oil injection sliding is smoother.
Example 2
With reference to embodiment 1, as shown in fig. 1 to 4, a first oil inlet 12 and a second oil inlet 13 are formed in two ends of a driving cavity of an oil cylinder, and oil is injected into the first oil inlet 12 or the second oil inlet 13 to drive a piston 5 and a piston rod 4 to slide, when locking is required, oil is injected into a self-locking oil inlet 14, an oil drives a piston rod sleeve 8 and a self-locking piston 7 to slide, and a stop gasket 10 at an end portion of the piston rod sleeve 8 is driven to abut against a compression ring 11 to be extruded and deformed, so that the piston rod 4 is locked and locked, when unlocking is required, oil is injected into an unlocking oil inlet 15, the oil drives the piston rod sleeve 8 and the self-locking piston 7 to slide, and the stop gasket 10 at the end portion of the piston rod sleeve 8 is driven to exit from the compression ring 11, so that the piston rod 4 is loosened. Utilize oil pressure and retainer to carry out the auto-lock to the piston rod 4 of hydro-cylinder, its locking is firm, effectively avoids piston rod 4 to take place the scene of removal under increasing the exogenic action, and each part of locking passes through threaded connection structure, and the installation is dismantled simple and conveniently.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (9)
1. The utility model provides an hydro-cylinder machinery self-lock device, includes cylinder (1), cylinder end (2), piston rod (4), piston (5) and uide bushing (6), forms drive oil pocket, characterized by between cylinder (1), cylinder end (2) and uide bushing (6): a self-locking oil cavity is arranged on one side of the driving oil cavity, a self-locking piston (7) and a piston rod sleeve (8) are arranged in the self-locking oil cavity, the self-locking piston (7) and the piston rod sleeve (8) are sleeved on the piston rod (4) to slide, the self-locking piston (7) is fixed at one end of the piston rod sleeve (8), a stop gasket (10) is fixedly arranged at the other end of the piston rod sleeve (8), and a stop ring (3) is fixedly arranged at the end part of the cylinder barrel (1);
the stop washer (10) is extruded by the stop ring (3) in the oil drive sliding process to lock the piston rod (4) in a locking mode through the stop washer (10).
2. The mechanical self-locking device of the oil cylinder as claimed in claim 1, which is characterized in that: the end part of the cylinder barrel (1) is fixedly provided with a self-locking guide sleeve (9), the outer wall of the self-locking guide sleeve (9) is in sealing support against the inner wall of the cylinder barrel (1), the inner wall of the self-locking guide sleeve (9) is in sealing support against the piston rod sleeve (8), and a self-locking oil cavity is formed among the guide sleeve (6), the self-locking guide sleeve (9) and the cylinder barrel (1).
3. The mechanical self-locking device of the oil cylinder as claimed in claim 2, which is characterized in that: the self-locking oil cavity is divided into a locking oil cavity and an unlocking oil cavity through a self-locking piston (7), the locking oil cavity is arranged between the guide sleeve (6) and the self-locking piston (7), and the unlocking oil cavity is arranged between the self-locking piston (7) and the self-locking guide sleeve (9).
4. The mechanical self-locking device of the oil cylinder as claimed in claim 1, which is characterized in that: a self-locking oil inlet (14) and an unlocking oil inlet (15) are arranged on one side of the cylinder barrel (1), the self-locking oil inlet (14) is communicated with the locking oil cavity, and the unlocking oil inlet (15) is communicated with the unlocking oil cavity.
5. The mechanical self-locking device of the oil cylinder as claimed in claim 1, which is characterized in that: the piston rod (4) is sleeved with the stop gasket (10), the outer side of the stop gasket (10) is conical, the end part of the stop gasket (10) is provided with a pressing ring (11), and the pressing ring (11) fixes the stop gasket (10) at the end part of the piston rod (4) through a plurality of bolts.
6. The mechanical self-locking device of the oil cylinder as claimed in claim 5, which is characterized in that: the conical outer part of the outer side of the stop gasket (10) is small and the inner part is large, and the diameter of the inner hole of the stop ring (3) is larger than the minimum diameter of the stop gasket (10) and smaller than the maximum diameter of the stop gasket (10);
the stop washer (10) slides into the inner hole of the stop ring (3) so as to be extruded and deformed to lock the piston rod (4).
7. The mechanical self-locking device of the oil cylinder as claimed in claim 6, which is characterized in that: the stop washer (10) is made of rubber, and a plurality of openings are formed in the periphery of the stop washer (10).
8. The mechanical self-locking device of the oil cylinder as claimed in claim 1, which is characterized in that: the inner side of the self-locking piston (7) is fixed at one end of a piston rod sleeve (8) through threads, the outer side of the self-locking piston (7) is abutted against the inside of the cylinder barrel (1) in a sealing manner, the inner side of the self-locking piston (7) is abutted against the piston rod sleeve (8) in a sealing manner, and the inner side of the piston rod sleeve (8) is sleeved on the piston rod (4) in a sealing manner to slide.
9. The mechanical self-locking device of the oil cylinder as claimed in claim 1, which is characterized in that: the inner side of the stop ring (3) is fixed at one end of the cylinder barrel (1) through threads, a step is arranged on one side of the self-locking piston (7) and one side of the self-locking guide sleeve (9), and the step is positioned on one side of the self-locking oil inlet (14) and one side of the unlocking oil inlet (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122398200.5U CN215908182U (en) | 2021-09-30 | 2021-09-30 | Mechanical self-locking device for oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122398200.5U CN215908182U (en) | 2021-09-30 | 2021-09-30 | Mechanical self-locking device for oil cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN215908182U true CN215908182U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122398200.5U Active CN215908182U (en) | 2021-09-30 | 2021-09-30 | Mechanical self-locking device for oil cylinder |
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| CN (1) | CN215908182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864286A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Self-locking device of sliding plate oil cylinder |
-
2021
- 2021-09-30 CN CN202122398200.5U patent/CN215908182U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864286A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Self-locking device of sliding plate oil cylinder |
| CN113864286B (en) * | 2021-09-30 | 2024-02-06 | 中船重工中南装备有限责任公司 | Self-locking device of slide plate oil cylinder |
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