CN212839878U - Pressure test joint structure of hydraulic cylinder - Google Patents
Pressure test joint structure of hydraulic cylinder Download PDFInfo
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- CN212839878U CN212839878U CN202021317268.5U CN202021317268U CN212839878U CN 212839878 U CN212839878 U CN 212839878U CN 202021317268 U CN202021317268 U CN 202021317268U CN 212839878 U CN212839878 U CN 212839878U
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- oil return
- return pipe
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Abstract
The utility model relates to the technical field of mechanical equipment, and a pneumatic cylinder pressure testing joint structure is disclosed, including the oil return pipe joint, the inside fixedly connected with of right-hand member of oil return pipe joint returns oil pipe, first internal thread has been seted up to the left end inside of oil return pipe joint, the left end threaded connection of oil return pipe joint has the crossover sub, first annular groove has been seted up on the middle part right side of crossover sub. This hydraulic cylinder pressure testing joint structure, through the right-hand member threaded connection who sets up some first interior spiral lines and crossover sub in the left end outside that returns oil pipe joint, replace original clamp fastening, prevent that the clamp is detecting pressurized in-process, the fastening is not firm to drop, first well sealed pad and the sealed pad setting of second combination are in every junction, make whole connecting device sealed more prevent that the oil leak leaks to press and influence the test, the inside rubber seal of fixed block left end makes the oil return rubber tube paste tight quick-operation joint's left end more simultaneously, the leakproofness is improved.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, specifically be a pneumatic cylinder pressure testing joint design.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. 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. The buffer device and the exhaust device are determined according to specific application occasions, other devices are indispensable, the hydraulic cylinder has three types of piston cylinders, plunger cylinders and swing cylinders, the piston cylinders and the plunger cylinders realize reciprocating linear motion and output speed and thrust, and the swing cylinders realize reciprocating swing and output angular speed and torque. The hydraulic cylinder may be used in combination of two or more or in combination with other mechanisms, in addition to being used singly.
When the existing oil cylinder is subjected to a pressure test, the upper cavity (rod cavity) of the oil cylinder needs to be loaded with 7-10MPa of pressure, the sealing condition of the connecting part of the upper end cover and the oil return seat is checked, and no leakage is ensured. However, the step part of the reverse taper of the excircle of the joint of the oil pipe and the oil return pipe of the oil cylinder of the existing hydraulic station is directly connected, the used clamp is not firmly fastened, the oil pipe is easy to fall off under the pressurization condition, and the pressure resistance test project cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pneumatic cylinder pressure testing joint design to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a hydraulic cylinder pressure test joint structure comprises an oil return pipe joint, wherein an oil return pipe is fixedly connected inside the right end of the oil return pipe joint, a first internal thread is arranged inside the left end of the oil return pipe joint, the left end of the oil return pipe joint is in threaded connection with a conversion joint, a first annular groove is formed in the right side of the middle of the conversion joint, a first combined sealing gasket is clamped inside the first annular groove, a second annular groove is formed in the left side of the middle of the conversion joint, a second combined sealing gasket is clamped inside the second annular groove, the left end of the conversion joint is in threaded connection with a quick joint, external spiral threads are formed in the outer surface of the left end of the quick joint, an oil return rubber pipe is sleeved at the left end of the quick joint, a connecting block is in threaded connection with the left end of the quick joint, and a third annular groove, the inside fixed mounting of third annular groove has rubber seal, the spiral line in the second has been seted up to the inside right-hand member of connecting block.
Preferably, the outer spiral thread is arranged on the outer side of the right end of the adapter, and the first internal thread arranged inside the left end of the oil return pipe joint is connected with the outer spiral thread on the right end of the adapter in a threaded manner.
Preferably, the outer spiral thread is arranged on the outer side of the left end of the adapter, the inner spiral thread is arranged inside the right end of the quick connector, and the adapter is connected inside the right end of the quick connector through the outer spiral thread at the left end.
Preferably, the external spiral thread on the outer side of the left end of the quick connector is in threaded connection with the second internal spiral thread on the right end inside the connecting block.
Preferably, an annular groove is formed in the right end of the oil return pipe joint, and the left end of the oil return pipe is fixedly connected into the annular groove.
Compared with the prior art, the utility model provides a pneumatic cylinder pressure testing joint structure possesses following beneficial effect:
this hydraulic cylinder pressure testing joint structure, through the right-hand member threaded connection who sets up some first interior spiral lines and crossover sub in the left end outside that returns oil pipe joint, replace original clamp fastening, prevent that the clamp is detecting pressurized in-process, the fastening is not firm to drop, first well sealed pad and the sealed pad setting of second combination are in every junction, make whole connecting device sealed more prevent that the oil leak leaks to press and influence the test, the inside rubber seal of fixed block left end makes the oil return rubber tube paste tight quick-operation joint's left end more simultaneously, the leakproofness is improved.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of the adapter of the present invention;
fig. 3 is the schematic view of the section structure of the connecting block of the present invention.
In the figure: 1 oil return pipe joint, 2 oil return pipes, 3 first internal threads, 4 adapter joints, 5 first annular grooves, 6 second annular grooves, 7 first combined sealing gaskets, 8 second combined sealing gaskets, 9 quick joints, 10 external spiral threads, 11 connecting blocks, 12 oil return rubber pipes, 13 rubber sealing rings, 14 annular grooves and 15 second internal spiral threads.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a hydraulic cylinder pressure test joint structure comprises an oil return pipe joint 1, an oil return pipe 2 is fixedly connected inside the right end of the oil return pipe joint 1, an annular groove is formed inside the right end of the oil return pipe joint 1, the left end of the oil return pipe 2 is fixedly connected in the annular groove, a first internal thread 3 is formed inside the left end of the oil return pipe joint 1, a conversion joint 4 is in threaded connection with the left end of the oil return pipe joint 1, external spiral threads are formed outside the right end of the conversion joint 4, the first internal thread 3 formed inside the left end of the oil return pipe joint 1 is in threaded connection with the external spiral threads at the right end of the conversion joint 4, a first annular groove 5 is formed on the right side of the middle part of the conversion joint 4, a first combined sealing gasket 7 is clamped inside the first annular groove 5, a second annular groove 6 is formed on the left side of the middle part of the, the left end of the adapter 4 is connected with a quick connector 9 by screw thread, the outer side of the left end of the adapter 4 is provided with outer screw thread, the inner screw thread is arranged inside the right end of the quick connector 9, the adapter 4 is connected inside the right end of the quick connector 9 by the outer screw thread of the left end, the outer surface of the left end of the quick connector 9 is provided with outer screw thread 10, the left end of the quick connector 9 is sleeved with an oil return rubber pipe 12, the left end of the quick connector 9 is connected with a connecting block 11 by screw thread, the inner left end of the connecting block 11 is provided with a third annular groove 14, the inner part of the third annular groove 14 is fixedly provided with a rubber sealing ring 13, the inner right end of the connecting block 11 is provided with second inner screw thread 15, the outer screw thread 10 outside the left end of the quick connector 9 is connected with the second inner screw thread 15 at the inner right end of the connecting block 11 by screw thread, the outer side of the, replace original clamp fastening, prevent that the clamp from detecting the pressurized in-process, the fastening is not firm to drop, and first well sealed 7 and the sealed 8 setting of second combined sealing of filling up makes whole connecting device sealed more prevent that the oil leak leaks and presses the influence test, and the inside rubber seal 13 of 11 left ends of fixed block makes oil return rubber tube 12 paste the left end of tight quick-operation joint 9 more simultaneously, improves the leakproofness.
In the actual operation process, when this device uses, return oil pipe joint 1's the left end outside and set up some first interior spiral line 3 and crossover sub 4's right-hand member threaded connection, replace original clamp fastening, prevent that the clamp from detecting pressurized in-process, the fastening is not firm to drop, first well sealed pad 7 and the sealed 8 setting of second combination are in every junction, make whole connection structure sealed more prevent that the oil leak leaks to press the influence test, cup joint oil return rubber tube 12 and rotate the left end of fixed block 11 at quick-operation joint 9 and make the left end threaded connection of fixed block 11 and quick-operation joint 9, the inside rubber seal circle 13 of fixed block 11 left end pushes down the right-hand member outer wall of oil return rubber tube 12 simultaneously, make oil return rubber tube 12 paste the left end of quick-operation joint 9 more tightly.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a pneumatic cylinder pressure testing joint structure, includes return oil pipe joint (1), its characterized in that: the oil return pipe joint is characterized in that an oil return pipe (2) is fixedly connected to the inside of the right end of the oil return pipe joint (1), a first internal thread (3) is arranged inside the left end of the oil return pipe joint (1), a conversion joint (4) is connected to the left end of the oil return pipe joint (1) in a threaded manner, a first annular groove (5) is arranged on the right side of the middle of the conversion joint (4), a first combined sealing gasket (7) is clamped inside the first annular groove (5), a second annular groove (6) is arranged on the left side of the middle of the conversion joint (4), a second combined sealing gasket (8) is clamped inside the second annular groove (6), a quick joint (9) is connected to the left end of the conversion joint (4) in a threaded manner, an external spiral thread (10) is arranged on the outer surface of the left end of the quick joint (9), and an oil return rubber, the left end threaded connection of quick-operation joint (9) has connecting block (11), third annular groove (14) have been seted up to the inside left end of connecting block (11), the inside fixed mounting of third annular groove (14) has rubber seal (13), spiral line (15) in the second have been seted up to the inside right-hand member of connecting block (11).
2. The pressure test joint structure of a hydraulic cylinder according to claim 1, characterized in that: outer spiral lines are arranged on the outer side of the right end of the adapter (4), and first inner threads (3) are arranged inside the left end of the oil return pipe joint (1) and are in threaded connection with the outer spiral lines at the right end of the adapter (4).
3. The pressure test joint structure of a hydraulic cylinder according to claim 1, characterized in that: the outer spiral thread is arranged on the outer side of the left end of the adapter (4), the inner spiral thread is arranged inside the right end of the quick connector (9), and the adapter (4) is connected inside the right end of the quick connector (9) through the outer spiral thread at the left end.
4. The pressure test joint structure of a hydraulic cylinder according to claim 1, characterized in that: the outer spiral thread (10) on the outer side of the left end of the quick connector (9) is in threaded connection with the second inner spiral thread (15) on the inner right end of the connecting block (11).
5. The pressure test joint structure of a hydraulic cylinder according to claim 1, characterized in that: an annular groove is formed in the right end of the oil return pipe joint (1), and the left end of the oil return pipe (2) is fixedly connected into the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021317268.5U CN212839878U (en) | 2020-07-06 | 2020-07-06 | Pressure test joint structure of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021317268.5U CN212839878U (en) | 2020-07-06 | 2020-07-06 | Pressure test joint structure of hydraulic cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN212839878U true CN212839878U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021317268.5U Active CN212839878U (en) | 2020-07-06 | 2020-07-06 | Pressure test joint structure of hydraulic cylinder |
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| CN (1) | CN212839878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109972A (en) * | 2021-12-31 | 2022-03-01 | 宁波固远管件有限公司 | Pressure-resistant test tool for single-acting oil cylinder |
-
2020
- 2020-07-06 CN CN202021317268.5U patent/CN212839878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109972A (en) * | 2021-12-31 | 2022-03-01 | 宁波固远管件有限公司 | Pressure-resistant test tool for single-acting oil cylinder |
| CN114109972B (en) * | 2021-12-31 | 2024-06-07 | 宁波固远管件有限公司 | Single-acting oil cylinder pressure-resistant test tool |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pressure test joint structure of hydraulic cylinder Effective date of registration: 20220329 Granted publication date: 20210330 Pledgee: Bank of China Limited by Share Ltd. Shiyan branch Pledgor: Hubei Wanbang Hydraulic Equipment Co.,Ltd. Registration number: Y2022980003490 |