CN219865726U - Self-loading pressure-resistant test oil cylinder - Google Patents
Self-loading pressure-resistant test oil cylinder Download PDFInfo
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- CN219865726U CN219865726U CN202320140927.XU CN202320140927U CN219865726U CN 219865726 U CN219865726 U CN 219865726U CN 202320140927 U CN202320140927 U CN 202320140927U CN 219865726 U CN219865726 U CN 219865726U
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- clamp
- end cover
- piston
- cylinder body
- self
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000009434 installation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a self-loading pressure-resistant test oil cylinder which comprises a fixing assembly, wherein the fixing assembly comprises an end cover and a cylinder body, and the end cover is arranged on one side of the cylinder body through a connecting piece; the movable assembly comprises a piston arranged between the cylinder body and the end cover; and the protecting device is used for protecting the end cover and the connecting piece. According to the utility model, the movable assembly drives the protection device to carry out pressure-resistant test on the oil cylinder, the screw used for connecting the end cover and the cylinder body is protected, the screw is prevented from bearing a large load, the structure can realize safe pressure-resistant test on the oil cylinder under the condition of no external structural frame, the installation is simple and convenient, and the efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of pressure resistance test of oil cylinders, and particularly relates to a self-loading pressure resistance test oil cylinder.
Background
According to the standard GB/T10205, a newly designed pressurizing oil cylinder is required to be subjected to a pressure-resistant test before mass production. The hollow pressurizing cylinder with the flange type end cover is adopted, and the pressure bearing capacity of the end cover cavity is smaller due to the limit of the number of screws. When pressure test is performed, the piston is prevented from being directly propped against the end cover, high load pressure is generated, and the pressure test is generally realized by an external structure. As shown in FIG. 3, the external structure is a frame, the pressurizing oil cylinder is arranged in the frame, the thickness of the backing plate is adjusted, the ascending travel of the oil cylinder is limited, and the piston can be prevented from directly propping against the end cover. However, for a large-scale pressurizing oil cylinder, the frame is large, has high rigidity requirement and precision requirement, has high manufacturing cost and is not convenient to install.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the self-loading pressure-resistant test oil cylinder, which adopts the cooperation among the pull rod, the clamp and the limiting gasket for the limited-range pressurization of the oil cylinder, can realize safe pressure-resistant test of the oil cylinder under the condition of no external structural frame, is simple and convenient to install and improves the efficiency.
The utility model discloses a self-loading pressure-resistant test oil cylinder which comprises a fixing assembly, wherein the fixing assembly comprises an end cover and a cylinder body, and the end cover is arranged on one side of the cylinder body through a connecting piece; the movable assembly comprises a piston arranged between the cylinder body and the end cover; and the protecting device is used for protecting the end cover and the connecting piece.
By adopting the scheme, the movable assembly drives the protection device to carry out a pressure-resistant test on the oil cylinder, and protects the connecting piece for connecting the end cover and the cylinder body, so that the connecting piece is prevented from bearing larger pressure. The structure can realize the safe pressure-proof test of the oil cylinder under the condition of no external structure frame, is simple and convenient to install and improves the efficiency.
Further, the protection device comprises a pull rod, a clamp and a limiting gasket, wherein the pull rod is arranged in the piston, and the clamp is arranged at two ends of the pull rod.
Through adopting above-mentioned scheme, the piston drives pull rod, clamp motion, and pull rod, clamp, limit washer three cooperation for limit, the pressurization of hydro-cylinder avoid piston and end cover, piston and cylinder body contact.
Further, annular grooves are formed in the two ends of the pull rod, and the clamp is clamped in the annular grooves.
Through adopting above-mentioned scheme, pull rod simple structure establishes the clamp in the annular and has restricted the axial motion of clamp.
Further, the clamp includes the second clamp of end cover end and the first clamp of cylinder body end, the spacing packing ring includes the first spacing packing ring between cylinder body and the first clamp and establishes the second spacing packing ring between end cover and second clamp.
Through adopting above-mentioned scheme, clamp and limit washer have restricted the circumferential displacement of piston, protect the connecting piece.
Further, medium cavities are arranged between the end cover and the piston and between the cylinder body and the piston.
Through adopting above-mentioned scheme, the medium cavity lets in the direction of motion of hydraulic oil steerable piston, simple structure, convenient operation.
Further, the limit gasket can be replaced according to the movement stroke of the piston.
Through adopting above-mentioned scheme, can select the thickness of spacing packing ring according to pressure testing stroke and piston stroke, easy operation, convenient change.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a cross-sectional view of a self-loading pressure test cylinder;
FIG. 2 is a side view of a self-loading pressure test cylinder;
fig. 3 is a background art drawing.
Wherein reference numerals are as follows: the device comprises a cylinder body 1, an end cover 2, a piston 3, a pull rod 4, an A cavity 5, a B cavity 6, a screw 7, a first clamp 11, a second clamp 12, a first limit gasket 13, a second limit gasket 14, a piston stroke a and a pressure test stroke b.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a self-loading pressure-resistant test oil cylinder, which comprises a fixing assembly, wherein the fixing assembly comprises an end cover 2 and a cylinder body 1, and the end cover 2 is arranged on one side of the cylinder body 1 through a connecting piece; the movable assembly comprises a piston 3 arranged between the cylinder body 1 and the end cover 2; the protection device is used for protecting the end cover 2 and the connecting piece between the end cover 2 and the cylinder body 1, and the connecting piece is a screw and is uniformly distributed on the end cover.
The utility model has the beneficial effects that:
firstly, the movable component drives the protection device to carry out a pressure-resistant test on the oil cylinder, so that the piston 3 is prevented from being contacted with the end cover 2 and the piston 3 is prevented from being contacted with the cylinder body 1, and the load of the screw 7 is reduced.
Secondly, the structure can realize safe pressure-proof test of the oil cylinder under the frame without an external structure, is simple and convenient to install and improves test efficiency.
In some embodiments of the utility model, the protection device comprises a pull rod 4, a clamp and a limit gasket, wherein the pull rod 4 is arranged in an inner hole of the piston 3, the clamp is arranged at two ends of the pull rod 4, the clamp comprises a second clamp 12 at the end of the end cover 2 and a first clamp 11 at the end of the cylinder body 1, the first clamp 11 and the second clamp 12 are symmetrically arranged, the limit gasket comprises a first limit gasket 13 between the cylinder body 1 and the first clamp 11 and a second limit gasket 14 between the end cover 2 and the second clamp 12, and the piston 3 drives the pull rod 4, the clamp and the limit gasket to move.
The beneficial effects of this embodiment lie in that pull rod 4, clamp, limit washer three cooperation are used, and limit washer has restricted piston 3's pressure testing stroke b, with pressure testing stroke b restriction in piston stroke a, has effectively avoided piston 3 and end cover 2 contact, and piston 3 and cylinder body 1 contact have protected screw 7 of end cover 2 department, avoid the high load. In some practical cases, some test cylinders only need to be tested for one pass, so that the second clamp 12 does not need to be arranged, the second clamp 12 can be added according to practical cases, and the test cylinders have strong flexibility.
In some embodiments of the utility model, the pull rod 4 is provided with annular grooves at both ends, and the clamp is clamped in the annular grooves.
The utility model has the beneficial effects that: the pull rod 4 is simple in structure and high in strength, the clamp is convenient to fix, and the clamp is arranged in the annular groove, so that the axial displacement of the clamp can be limited.
In some embodiments of the utility model, the contact end of the piston 3 with the cylinder body 1 is the A cavity 5, the contact end of the piston 3 with the end cover 2 is the B cavity 6, the A cavity 5 is filled with oil, the piston 3 moves leftwards, the B cavity 6 is filled with oil, and the piston 3 moves rightwards, so that the operation is convenient.
In some embodiments of the utility model, the limit washers are exchangeable according to the movement stroke of the piston 3.
The utility model has the beneficial effects that: the thickness of the limiting gasket controls the movement stroke of the piston 3, and the limiting gasket can be replaced according to requirements, is simple to detach and has strong flexibility.
The working mode of the utility model is as follows: when the cavity A5 is filled with oil, the cavity B6 returns oil, the piston 3 drives the pull rod 4 and the clamp to move leftwards, the first limit washer 13 is contacted with the first clamp 11, the thrust of the piston 3 is borne by the cylinder body 1 on the right side, the piston 3 cannot be contacted with the end cover 2, and the screw 7 cannot be broken due to high load bearing; when the cavity B6 is filled with oil, the cavity A5 returns oil, the piston 3 drives the pull rod 4 and the clamp to move rightwards, the second limit washer 14 is in contact with the second clamp 12, the piston 3 cannot be directly in contact with the cylinder body 1, the end cover 2 is far away from the piston 3, and the screw 7 cannot be loaded.
It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (5)
1. The utility model provides a self-loading withstand voltage test hydro-cylinder which characterized in that includes:
the fixing assembly comprises an end cover (2) and a cylinder body (1), and the end cover (2) is arranged on one side of the cylinder body (1) through a connecting piece;
the movable assembly comprises a piston (3) arranged between the cylinder body (1) and the end cover (2);
the protection device is used for protecting the end cover (2) and the connecting piece, the protection device comprises a pull rod (4), a clamp and a limiting gasket, the pull rod (4) is arranged in the piston, and the clamp is arranged at two ends of the pull rod (4).
2. The self-loading pressure test oil cylinder according to claim 1, wherein annular grooves are formed in two ends of the pull rod (4), and the clamp is clamped in the annular grooves.
3. The self-loading pressure test cylinder according to claim 1, characterized in that the clamp comprises a second clamp (12) at the end cap (2) and a first clamp (11) at the end of the cylinder body (1), and the limit gasket comprises a first limit gasket (13) between the cylinder body (1) and the first clamp (11) and a second limit gasket (14) arranged between the end cap (2) and the second clamp (12).
4. The self-loading pressure test oil cylinder according to claim 1, wherein a medium cavity is further arranged between the end cover (2) and the piston (3), and between the cylinder body (1) and the piston (3).
5. Self-loading pressure test cylinder according to claim 1, characterized in that the limit washers are exchangeable according to the movement stroke of the piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140927.XU CN219865726U (en) | 2023-02-07 | 2023-02-07 | Self-loading pressure-resistant test oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140927.XU CN219865726U (en) | 2023-02-07 | 2023-02-07 | Self-loading pressure-resistant test oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865726U true CN219865726U (en) | 2023-10-20 |
Family
ID=88317062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320140927.XU Active CN219865726U (en) | 2023-02-07 | 2023-02-07 | Self-loading pressure-resistant test oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865726U (en) |
-
2023
- 2023-02-07 CN CN202320140927.XU patent/CN219865726U/en active Active
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