CN211623864U - Plunger piston composite double-acting oil cylinder - Google Patents
Plunger piston composite double-acting oil cylinder Download PDFInfo
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- CN211623864U CN211623864U CN202020069639.6U CN202020069639U CN211623864U CN 211623864 U CN211623864 U CN 211623864U CN 202020069639 U CN202020069639 U CN 202020069639U CN 211623864 U CN211623864 U CN 211623864U
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Abstract
The utility model belongs to the technical field of the hydraulic cylinder technique and specifically relates to a plunger piston compound double-acting cylinder, the power distribution device comprises a cylinder body, the cylinder bottom, the one-level piston rod, the second grade piston rod, tertiary piston rod, the one-level uide bushing, second grade uide bushing and tertiary uide bushing, the cylinder bottom sets up the bottom surface at the cylinder body, the one-level piston rod sets up in the cylinder body, the second grade piston rod sets up in the one-level piston rod, tertiary piston rod sets up in the second grade piston rod, the one-level piston rod, second grade piston rod and tertiary piston rod all bottom up having set gradually the YX sealing washer. The utility model discloses the cooperation of piston rod and uide bushing makes the hydro-cylinder can reduce installation space to realize quick flexible, the sealed effect of hydro-cylinder can be improved greatly to dust ring, YX sealing washer, steckel and O type sealing washer for the piston rod on the uide bushing.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic cylinder technique and specifically relates to a compound double-acting cylinder of plunger piston.
Background
A double acting hydraulic cylinder refers to a hydraulic cylinder capable of inputting pressure oil from both sides of a piston, which is often used as a driving assembly of a jack. The actuators of double-acting hydraulic cylinders are the main output devices of hydraulic motion systems, and although they vary in size, type and design, they are also typically the most visible parts. These actuators convert fluid pressure into a rapid, controllable linear motion or force, thereby driving a load. In the actual installation process, due to the limitation of the structural size of the installation part, the initial installation size of the oil cylinder is short, and the stroke of the oil cylinder is long. Therefore, the oil cylinder needs to be designed into a multi-stage structure. The existing multi-stage cylinder can only extend out and cannot retract automatically, is not suitable for actual working requirements, and is poor in sealing effect.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior double-acting oil cylinder technology, the utility model provides a plunger piston composite double-acting oil cylinder.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a compound double-acting cylinder of plunger piston, includes cylinder body, cylinder bottom, one-level piston rod, second grade piston rod, tertiary piston rod, one-level uide bushing, second grade uide bushing and tertiary uide bushing, the cylinder bottom sets up the bottom surface at the cylinder body, and the one-level piston rod sets up in the cylinder body, and the second grade piston rod sets up in the one-level piston rod, and the tertiary piston rod sets up in the second grade piston rod, and the one-level piston rod, second grade piston rod and tertiary piston rod all have set gradually YX sealing washer for the piston from down up bottom to bottom, and double-acting sealing washer and hydraulic fluid port for the piston, and the one-level uide bushing sets up between cylinder body and one-level piston rod, and.
According to the utility model discloses a further embodiment, further include that the cylinder bottom passes through the screw and is connected with the cylinder body bottom surface, the cylinder bottom surface is provided with the end connection.
According to the utility model discloses a further include that the screw dress is used on the cylinder body top surface for the one-level uide bushing, and the second grade uide bushing is twisted on one-level piston rod upper portion through the screw thread, and tertiary uide bushing is twisted on second grade piston rod upper portion through the screw thread.
According to the utility model discloses a further embodiment, all down having set gradually dust ring, YX sealing washer, ste seal and O type sealing washer for the piston rod from last on including one-level uide bushing, second grade uide bushing and tertiary uide bushing, dust ring, YX sealing washer and ste seal for the piston rod all set up at one-level uide bushing, second grade uide bushing and tertiary uide bushing inboardly, and O type sealing washer sets up in the one-level uide bushing, second grade uide bushing and the tertiary uide bushing outside.
According to the utility model discloses a further embodiment, all be provided with the oiling clearance between further including between one-level piston rod and the cylinder body, between second grade piston rod and the one-level piston rod and between tertiary piston rod and the second grade piston rod.
According to another embodiment of the present invention, further including the piston with the proportion of two effect sealing washer width and hydraulic fluid port diameter be 2: 1.
according to the utility model discloses a three-level piston rod is hollow structure, and three-level piston rod is inside to be provided with oil pipe, and three-level piston rod top surface is provided with the top link.
The utility model has the advantages that: the utility model discloses simple structure practices thrift the cost, and the cooperation of one-level piston rod, second grade piston rod and tertiary piston rod and one-level uide bushing, second grade uide bushing and tertiary uide bushing makes the hydro-cylinder can reduce installation space to realize quick flexible, the sealed effect of hydro-cylinder can be improved greatly to dust ring, YX sealing washer for the piston rod on the uide bushing, stecken and O type sealing washer, prevents to reveal, and the proportion of two effect sealing washer width and hydraulic fluid port diameter is 2 for the piston: 1 can reduce the damage when the double-acting sealing ring for the piston crosses the oil port.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged schematic view of the utility model at K;
fig. 3 is an enlarged schematic view of the utility model at a;
fig. 4 is an enlarged schematic structural diagram of the utility model B.
In the figure, 1, a cylinder body, 2, a cylinder bottom, 3, a first-level piston rod, 4, a second-level piston rod, 5, a third-level piston rod, 6, a first-level guide sleeve, 7, a second-level guide sleeve, 8, a third-level guide sleeve, 9, a YX sealing ring for a piston, 10, a double-acting sealing ring for the piston, 11, an oil port, 12, a dust ring, 13, a YX sealing ring for the piston rod, 14, a Stent seal, 15 and an O-shaped sealing ring.
Detailed Description
Fig. 1 is the utility model discloses a structural schematic diagram, a compound double-acting cylinder of plunger piston, including cylinder body 1, cylinder bottom 2, one-level piston rod 3, second grade piston rod 4, tertiary piston rod 5, one-level uide bushing 6, second grade uide bushing 7 and tertiary uide bushing 8, cylinder bottom 2 sets up in the bottom surface of cylinder body 1, and one-level piston rod 3 sets up in cylinder body 1, and second grade piston rod 4 sets up in one-level piston rod 3, and tertiary piston rod 5 sets up in second grade piston rod 4.
As shown in fig. 4, the YX seal ring 9 for the piston, the double-acting seal ring 10 for the piston and the oil port 11 are sequentially arranged at the bottoms of the first-stage piston rod 3, the second-stage piston rod 4 and the third-stage piston rod 5 from bottom to top, the first-stage guide sleeve 6 is arranged between the cylinder body 1 and the first-stage piston rod 3, the second-stage guide sleeve 7 is arranged between the first-stage piston rod 3 and the second-stage piston rod 4, and the third-stage guide sleeve 8 is arranged between the second-stage piston rod 4.
The utility model discloses simple structure practices thrift the cost, one-level piston rod 3, second grade piston rod 4 and tertiary piston rod 5 and one-level uide bushing 6, the cooperation of second grade uide bushing 7 and tertiary uide bushing 8 makes the hydro-cylinder can reduce installation space, and realize quick flexible, dust ring 12 on the uide bushing, YX sealing washer 13 for the piston rod, steckel 14 and O type sealing washer 15 can improve the sealed effect of hydro-cylinder greatly, prevent to reveal, the piston is 2 with the proportion of 9 width of two effect sealing washers and hydraulic fluid port diameter: 1 can reduce the damage of the double-acting sealing ring 9 for the piston when passing through the oil port.
The cylinder bottom 2 is connected with the bottom surface of the cylinder body 1 through screws, and the bottom surface of the cylinder bottom 2 is provided with a tail connecting end.
The first-stage guide sleeve 6 is arranged on the top surface of the cylinder body 1 through a screw, the second-stage guide sleeve 7 is screwed on the upper portion of the first-stage piston rod 3 through a thread, and the third-stage guide sleeve 8 is screwed on the upper portion of the second-stage piston rod 4 through a thread.
As shown in fig. 3, the first-stage guide sleeve 6, the second-stage guide sleeve 7 and the third-stage guide sleeve 8 are sequentially provided with a dustproof ring 12, a piston rod YX seal ring 13, a ste seal 14 and an O-ring seal 15 from top to bottom, the dustproof ring 12, the piston rod YX seal ring 13 and the ste seal 14 are all arranged on the inner sides of the first-stage guide sleeve 6, the second-stage guide sleeve 7 and the third-stage guide sleeve 8, and the O-ring seal 15 is arranged on the outer sides of the first-stage guide sleeve 6, the second-stage guide sleeve 7 and the third-stage guide sleeve 8.
And oil injection gaps are arranged between the primary piston rod 3 and the cylinder body 1, between the secondary piston rod 4 and the primary piston rod 3 and between the tertiary piston rod 5 and the secondary piston rod 4.
As shown in fig. 2, the ratio of the width of the double-acting sealing ring 10 for the piston to the diameter of the oil port 11 is 2: 1.
the three-level piston rod 5 is of a hollow structure, an oil pipe is arranged inside the three-level piston rod 5, and a top connecting end is arranged on the top surface of the three-level piston rod 5.
The first embodiment is as follows: the utility model discloses when stretching out, the oil in the 5 cavitys of tertiary piston rod passes through one-level piston rod 3, hydraulic fluid port 11 on second grade piston rod 4 and the tertiary piston rod 5 flows in between one-level piston rod 3 and the cylinder body 1, all be provided with the oiling clearance between second grade piston rod 4 and the one-level piston rod 3 and between tertiary piston rod 5 and the second grade piston rod 4 and produce the oil pressure with one-level piston rod 3 in proper order, second grade piston rod 4 and tertiary piston rod 5 push out and reach the hydro-cylinder and reach the maximum stroke that stretches out, the piston is 2 with the proportion of 9 width of: 1 can reduce the piston and pass the hydraulic fluid port with two effect sealing washer 9 and damage, during the withdrawal, oil flows back to tertiary 5 cavities of piston rod through hydraulic fluid port 11 again, and one-level 3, secondary 4 and tertiary 5 piston rod of piston rod retract in proper order.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A plunger piston composite double-acting oil cylinder is characterized by comprising a cylinder body (1), a cylinder bottom (2), a first-stage piston rod (3), a second-stage piston rod (4), a third-stage piston rod (5), a first-stage guide sleeve (6), a second-stage guide sleeve (7) and a third-stage guide sleeve (8), wherein the cylinder bottom (2) is arranged on the bottom surface of the cylinder body (1), the first-stage piston rod (3) is arranged in the cylinder body (1), the second-stage piston rod (4) is arranged in the first-stage piston rod (3), the third-stage piston rod (5) is arranged in the second-stage piston rod (4), the first-stage piston rod (3), the second-stage piston rod (4) and the third-stage piston rod (5) are sequentially provided with a YX sealing ring (9) for a piston, a double-acting sealing ring (10) for the piston and an oil port (11) from, the secondary guide sleeve (7) is arranged between the primary piston rod (3) and the secondary piston rod (4), and the tertiary guide sleeve (8) is arranged between the secondary piston rod (4) and the tertiary piston rod (5).
2. The plunger piston composite double-acting oil cylinder as claimed in claim 1, wherein the cylinder bottom (2) is connected with the bottom surface of the cylinder body (1) through a screw, and the bottom surface of the cylinder bottom (2) is provided with a tail connecting end.
3. The plunger piston composite double-acting oil cylinder as claimed in claim 1, wherein the primary guide sleeve (6) is mounted on the top surface of the cylinder body (1) by screws, the secondary guide sleeve (7) is screwed on the upper part of the primary piston rod (3) by threads, and the tertiary guide sleeve (8) is screwed on the upper part of the secondary piston rod (4) by threads.
4. The plunger piston composite double-acting oil cylinder as claimed in claim 1, wherein the primary guide sleeve (6), the secondary guide sleeve (7) and the tertiary guide sleeve (8) are sequentially provided with a dust ring (12), a YX sealing ring (13) for a piston rod, a Style seal (14) and an O-shaped sealing ring (15) from top to bottom, the dust ring (12), the YX sealing ring (13) for the piston rod and the Style seal (14) are all arranged on the inner sides of the primary guide sleeve (6), the secondary guide sleeve (7) and the tertiary guide sleeve (8), and the O-shaped sealing ring (15) is arranged on the outer sides of the primary guide sleeve (6), the secondary guide sleeve (7) and the tertiary guide sleeve (8).
5. The plunger piston composite double-acting oil cylinder as claimed in claim 1, wherein oil injection gaps are arranged between the primary piston rod (3) and the cylinder body (1), between the secondary piston rod (4) and the primary piston rod (3), and between the tertiary piston rod (5) and the secondary piston rod (4).
6. The plunger piston composite double-acting oil cylinder as claimed in claim 1, wherein the ratio of the width of the double-acting sealing ring (10) for the piston to the diameter of the oil port (11) is 2: 1.
7. the plunger piston composite double-acting oil cylinder as claimed in claim 1, wherein the tertiary piston rod (5) is of a hollow structure, an oil pipe is arranged inside the tertiary piston rod (5), and a top connecting end is arranged on the top surface of the tertiary piston rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020069639.6U CN211623864U (en) | 2020-01-14 | 2020-01-14 | Plunger piston composite double-acting oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020069639.6U CN211623864U (en) | 2020-01-14 | 2020-01-14 | Plunger piston composite double-acting oil cylinder |
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| Publication Number | Publication Date |
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| CN211623864U true CN211623864U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020069639.6U Active CN211623864U (en) | 2020-01-14 | 2020-01-14 | Plunger piston composite double-acting oil cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
-
2020
- 2020-01-14 CN CN202020069639.6U patent/CN211623864U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
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