CN116358792A - Device and method for detecting air tightness of oil way hydraulic element - Google Patents
Device and method for detecting air tightness of oil way hydraulic element Download PDFInfo
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- CN116358792A CN116358792A CN202211557761.8A CN202211557761A CN116358792A CN 116358792 A CN116358792 A CN 116358792A CN 202211557761 A CN202211557761 A CN 202211557761A CN 116358792 A CN116358792 A CN 116358792A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a device and a method for detecting the air tightness performance of an oil way hydraulic element, which relate to the technical field of air tightness detection equipment, wherein the detection device comprises: a workbench and a positioning mechanism; the liquid storage box body is arranged on the workbench and used for bearing detection liquid; the positioning mechanism comprises: the sealing ends are oppositely arranged on the workbench; the driving mechanism is connected with the sealing end and used for driving the sealing end to horizontally move; the central end of the sealing end is provided with a through hole, and one side of the through hole is connected with an air inlet mechanism for introducing compressed air into the pipeline; further comprises: the lifting mechanism is used for driving the pipeline to be immersed in the detection liquid for tightness detection, any leakage point on the pipeline can be detected, meanwhile, the position where the bubble appears in the detection liquid can be used for judging where the pipeline leaks, and the accuracy is higher.
Description
Technical Field
The invention relates to the technical field of air tightness detection equipment, in particular to an air tightness performance detection device and method for an oil circuit hydraulic element.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines.
In the prior art, patent publication No. CN106840555B discloses a pneumatic cylinder airtight detection device, this patent discloses that adopts the inflatable mode, when sealing performance is not good between pneumatic cylinder and the piston, the taper pipe will be discharged from the second hydraulic fluid port to the gas that fills into to the taper pipe in with the exhaust gas to make the marking fluid in the scale pipe produce and remove, thereby realize the detection of gas tightness between pneumatic cylinder and the piston, but to two interconnect's pipeline in the oil circuit hydraulic component, the link of two pipelines can not set up the taper pipe and exhaust, and then can't go on to the gas tightness detection of link.
Disclosure of Invention
The invention aims to provide a device and a method for detecting the air tightness of an oil way hydraulic element, which solve the following technical problems:
for two mutually connected pipelines in an oil way hydraulic element, the connecting ends of the two pipelines cannot be provided with taper pipes for exhausting, and then the air tightness detection of the connecting ends cannot be performed.
The aim of the invention can be achieved by the following technical scheme:
an air tightness performance detection device of an oil circuit hydraulic element, comprising:
a workbench and a positioning mechanism;
the liquid storage box body is arranged on the workbench and used for bearing detection liquid;
the positioning mechanism comprises:
the sealing ends are oppositely arranged on the workbench;
the driving mechanism is connected with the sealing end and used for driving the sealing end to horizontally move;
the central end of the sealing end is provided with a through hole, and one side of the through hole is connected with an air inlet mechanism for introducing compressed air into the pipeline;
further comprises:
and the lifting mechanism is used for driving the pipeline to be immersed in the detection liquid for tightness detection.
Preferably, the driving mechanism comprises a positioning frame connected with the sealing end, a driving box body is arranged on the workbench, a screw rod is rotationally arranged in the driving box body, the screw rod is fixedly connected with the output end of a first motor arranged outside the driving box body, a nut fixedly connected with the positioning frame is arranged on the screw rod, and the sealing end is arranged on the positioning frame.
Preferably, the air inlet mechanism comprises an air pump arranged on the workbench, one side of the air pump is connected with the air storage tank, and the other side of the air pump is connected with the through hole of the sealing end head of the corresponding side through the air pipe.
Preferably, the end face of the sealing end is also provided with an annular groove, an annular sealing gasket is movably embedded in the annular groove, and an air hole communicated with the through hole is formed in the wall of the annular groove.
Preferably, the lifting mechanism comprises a limiting plate arranged on the workbench, and an air cylinder fixedly connected with the driving box body is arranged on one side of the limiting plate.
Preferably, the positioning mechanism further comprises a positioning plate arranged on one side of the sealing end, a plurality of L-shaped limiting frames are arranged on the periphery of the positioning plate in an annular array, a screw rod is spirally arranged on each L-shaped limiting frame, and a limiting seat is rotationally arranged on the screw rod towards the sealing end.
Preferably, the rotary sealing device further comprises a turnover mechanism, the turnover mechanism comprises a rotary drum fixedly connected with the sealing end, the other end of the rotary drum is rotationally connected with a positioning frame, a limiting cylinder connected with the rotary drum through belt transmission is arranged at the inner end of one side of the positioning frame, a limiting rod connected with the limiting cylinder in a sliding mode is arranged at the inner end of the other side of the positioning frame, and the limiting rod is connected with the rotary drum through belt transmission.
Preferably, the inner end surface of the limiting cylinder is provided with a plurality of strip-shaped clamping grooves in an annular array, and the outer end surface of the limiting rod is correspondingly provided with a plurality of strip-shaped clamping seats which are clamped with the strip-shaped clamping grooves;
the method for detecting the air tightness performance of the oil way hydraulic element comprises the following steps:
s1, driving a screw rod to rotate by a first motor, driving a positioning frame to move in the process of moving on the screw rod by a nut, and synchronously driving a sealing end to be embedded into a pipeline by the positioning frame;
s2, starting an air cylinder, wherein the air cylinder drives the driving box body to move along the direction of the limiting plate, so that one half of the pipeline is immersed in the detection liquid;
s3, starting an air pump, wherein the air pump conveys compressed air in the air storage tank to the through hole through the air pipe, and the compressed air is input into the pipeline through the through hole under the action of pressure;
s4, starting a second motor to drive one side rotary drum to rotate, and driving the other side rotary drum to rotate through a belt, a limiting rod and a limiting drum by the one side rotary drum, so that the rotary drum drives a pipeline to rotate, and angle adjustment is realized;
s5, the inspector can judge whether the air tightness of the pipeline is good or not based on whether bubbles appear in the inspection liquid.
The invention has the beneficial effects that:
(1) According to the invention, the lifting mechanism drives the pipeline to be immersed in the detection liquid in the liquid storage box body, compressed gas is introduced into the pipeline along with the air inlet mechanism, when the sealing performance of the pipeline is poor, the compressed gas is discharged from the leakage end into the detection liquid, so that bubbles appear in the detection liquid, and a detector can judge whether the air tightness of the pipeline is good or not based on the phenomenon, and compared with the existing inflatable detection equipment, the detection device can detect any leakage point on the pipeline, and meanwhile, the detection device can judge where the pipeline leaks through the position of the bubbles in the detection liquid, so that the accuracy is higher;
(2) In the process of continuously introducing compressed gas into the pipeline, the gas in the through holes enters the annular groove along with the gas holes in order to avoid the gas from being discharged from the connecting end of the pipeline and the sealing end in synchronization along with the pressure increase in the pipeline, so that the annular sealing gasket expands under the action of the gas pressure in the annular groove and is in a precise fit state with the inner wall of the pipeline, and the sealing treatment of the connecting end of the pipeline and the sealing end is realized.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a device for detecting the air tightness of an oil circuit hydraulic component according to the present invention;
FIG. 2 is a schematic diagram of a device for detecting air tightness of an oil circuit hydraulic element according to the second embodiment of the present invention;
FIG. 3 is a schematic diagram of a device for detecting air tightness of an oil circuit hydraulic element according to the present invention;
FIG. 4 is a schematic view of the structure of a seal head in the airtight performance test apparatus of an oil path hydraulic element according to the present invention;
FIG. 5 is a schematic diagram of the structure of a limiting cylinder in the air tightness detecting device of the oil circuit hydraulic component;
FIG. 6 is a schematic view of the structure of a ring seal in the airtight performance test apparatus for an oil path hydraulic element according to the present invention;
fig. 7 is a schematic view of the structure of the oil circuit hydraulic element in the air tightness detection device for detecting the pipeline.
In the figure: 1. a work table; 2. a liquid storage tank body; 3. a gas storage tank; 4. a positioning frame; 5. driving the box body; 6. a limiting plate; 7. a second motor; 8. a pipe; 9. a positioning plate; 201. a groove is formed; 301. a gas pipe; 302. an air pump; 501. a first motor; 502. a screw rod; 503. a nut; 601. a cylinder; 701. a belt; 702. a limit rod; 703. a limiting cylinder; 704. a strip-shaped clamping seat; 705. a strip-shaped clamping groove; 901. a handle; 902. an L-shaped limiting frame; 903. a screw; 904. a limit seat; 905. sealing the end head; 906. an annular gasket; 907. a through hole; 908. an annular groove; 909. air holes; 910. a rotating drum.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-2, the invention relates to a device for detecting air tightness of an oil-way hydraulic element, which comprises a workbench 1 and a positioning mechanism, wherein a liquid storage box body 2 for bearing detection liquid is arranged on the workbench 1; in one embodiment of the present invention, the detection liquid may be water or oil; the positioning mechanism is used for positioning and fixing the pipeline 8 to be detected and comprises sealing ends 905 which are arranged oppositely, and the sealing ends 905 are connected with a driving mechanism for driving the sealing ends 905 to horizontally move; it may be noted that when the pipeline or the cylinder to be detected is fixed, the pipeline or the cylinder is placed between the sealing ends 905 at two sides, and then the sealing ends 905 are driven by the driving mechanism to move towards the direction of the pipeline 8, the outer diameter of the sealing ends 905 is adapted to the inner diameter of the pipeline 8, the sealing ends 905 at two sides can also seal the pipeline 8 while clamping and positioning the pipeline or the cylinder, a through hole 907 is formed at the center end of the sealing ends 905, and one side of the through hole 907 is connected with the air inlet mechanism for introducing compressed air into the pipeline 8;
the device further comprises a lifting mechanism, wherein the lifting mechanism is used for driving the pipeline 8 to be immersed in the detection liquid for detecting the tightness; specifically, after the pipeline 8 is positioned and fixed, the pipeline 8 is driven by the lifting mechanism to be immersed in the detection liquid in the liquid storage tank 2, compressed gas is introduced into the pipeline 8 along with the air inlet mechanism, when the sealing performance of the pipeline 8 is poor, the compressed gas is discharged from the leakage end into the detection liquid, so that bubbles appear in the detection liquid, and a detector can judge whether the air tightness of the pipeline 8 is good or not based on the phenomenon, and compared with the existing inflatable detection equipment, the detection device can detect any leakage point on the pipeline 8, and meanwhile, the detection device can judge where the leakage appears on the pipeline 8 through the position of the bubbles in the detection liquid, so that the accuracy is higher;
referring to fig. 3, the driving mechanism includes a positioning frame 4 connected to a sealing end 905, a driving box 5 is disposed on the workbench 1, a screw rod 502 is rotationally disposed in the driving box 5, the screw rod 502 is fixedly connected to an output end of a first motor 501 disposed outside the driving box 5, a nut 503 fixedly connected to the positioning frame 4 is disposed on the screw rod 502, and the sealing end 905 is disposed on the positioning frame 4; when the sealing end 905 is driven to move, the first motor 501 is started to drive the screw rod 502 to rotate, the nut 503 drives the positioning frame 4 to move in the process of moving on the screw rod 502, and the positioning frame 4 synchronously drives the sealing end 905 to be embedded into the pipeline 8;
as a further scheme of the embodiment of the invention, the air inlet mechanism comprises an air pump 302 arranged on the workbench 1, one side of the air pump 302 is connected with the air storage tank 3, and the other side is connected with a through hole 907 of a sealing end 905 at the corresponding side through an air pipe 301; in the present embodiment, the compressed gas in the gas tank 3 is inert gas such as nitrogen, helium or argon; when compressed gas is introduced into the pipeline 8, the air pump 302 is started firstly, the air pump 302 conveys the compressed gas in the air storage tank 3 to the through hole 907 through the gas pipe 301, and the compressed gas is input into the pipeline 8 through the through hole 907 under the action of pressure;
referring to fig. 4, further, the end face of the sealing end 905 is further provided with an annular groove 908, and an annular sealing gasket 906 is movably embedded in the annular groove 908, wherein an air hole 909 communicating with the through hole 907 is formed in the wall of the annular groove 908; it may be noted that, in the process of continuously introducing compressed gas into the pipe 8, along with the increase of the pressure in the pipe 8, in order to avoid the gas from being discharged from the connection end of the pipe 8 and the sealing end 905, the gas in the through hole 907 enters the annular groove 908 along with the gas hole 909, under the action of the gas pressure in the annular groove 908, the annular sealing gasket 906 expands and forms a precise fitting state with the inner wall of the pipe 8, so as to realize the sealing treatment of the connection end of the pipe 8 and the sealing end 905;
referring to fig. 5, the lifting mechanism includes a limiting plate 6 disposed on the workbench 1, and an air cylinder 601 fixedly connected with the driving box 5 is disposed on one side of the limiting plate 6; it may be noted that, in the process that the driving pipe 8 moves toward the direction of the liquid storage tank 2, the air cylinder 601 is started, and the air cylinder 601 drives the driving tank 5 to move along the direction of the limiting plate 6;
as a further scheme of the embodiment of the invention, the positioning mechanism further comprises a positioning plate 9 arranged at one side of the sealing end 905, a plurality of L-shaped limiting frames 902 are arranged at the periphery of the positioning plate 9 in an annular array, screw rods 903 are spirally arranged on the L-shaped limiting frames 902, limiting seats 904 are rotatably arranged on the screw rods 903 towards the sealing end 905, and handles 901 are arranged at the other ends of the screw rods 903; when the pipeline 8 is positioned and fixed, the handle 901 is rotated to drive the screw 903 to rotate, the screw 903 synchronously drives the limiting seat 904 to move towards the pipeline 8, and the limiting seat is tightly attached and fixed with the outer wall of the pipeline 8, so that the pipeline 8 and the sealing end 905 are prevented from rotating relatively, and the stability is higher;
referring to fig. 6-7, the device further comprises a turnover mechanism for driving the pipeline 8 to rotate, the turnover mechanism comprises a rotary drum 910 fixedly connected with a sealing end 905, the other end of the rotary drum 910 is rotationally connected with a positioning frame 4, a limiting cylinder 703 in transmission connection with the rotary drum 910 through a belt 701 is arranged at the inner end of one side of the positioning frame 4, a limiting rod 702 in sliding connection with the limiting cylinder 703 is arranged at the inner end of the other side of the positioning frame 4, and the limiting rod 702 is in transmission connection with the rotary drum 910 through the belt 701; wherein, the second motor 7 fixedly connected with the rotary drum 910 is arranged on the positioning frame 4 at one side;
in addition, the inner end surface of the limiting cylinder 703 is provided with a plurality of strip-shaped clamping grooves 705 in an annular array, and the outer end surface of the limiting rod 702 is correspondingly provided with a plurality of strip-shaped clamping seats 704 which are clamped with the strip-shaped clamping grooves 705; it may be noted that, when the rotation of the rotation drum 910 is adjusted, the second motor 7 is started to drive the rotation of the rotation drum 910 at one side, the rotation drum 910 at one side drives the rotation of the rotation drum 910 at the other side through the belt 701, the stop lever 702 and the stop drum 703, and the rotation of the pipe 8 is driven by the rotation drum 910, so as to realize the angle adjustment;
furthermore, two groups of slots 201 are formed on two sides of the liquid storage tank body 2, so that the rotating drum 910 can be erected on the slots 201, in this embodiment, when the pipeline 8 is detected, a half of the pipeline 8 is immersed in the detection liquid, when the detection liquid is detected, the pipeline 8 is enabled to slowly rotate, when bubbles appear in the detection liquid, the overturning can be suspended, and then a half of the detection liquid is not removed, so that the positioning accuracy of the leakage point is higher.
Example 2
The method for detecting the air tightness performance of the oil way hydraulic element comprises the following steps:
s1, a first motor 501 drives a screw rod 502 to rotate, a nut 503 drives a positioning frame 4 to transfer in the process of transferring on the screw rod 502, and the positioning frame 4 synchronously drives a sealing end 905 to be embedded into a pipeline 8;
s2, starting an air cylinder 601, wherein the air cylinder 601 drives the driving box body 5 to move along the direction of the limiting plate 6, so that a half of the pipeline 8 is immersed in the detection liquid;
s3, starting the air pump 302, and conveying compressed air in the air storage tank 3 to the through hole 907 by the air pump 302 through the air pipe 301, and inputting the compressed air into the pipeline 8 through the through hole 907 under the action of pressure;
s4, starting a second motor 7 to drive one side rotary drum 910 to rotate, wherein the other side rotary drum 910 is driven by the one side rotary drum 910 to rotate through a belt 701, a limiting rod 702 and a limiting drum 703, and then the rotary drum 910 drives a pipeline 8 to rotate, so that angle adjustment is realized;
s5, a inspector can judge whether the air tightness of the pipeline 8 is good or not based on whether bubbles appear in the inspection liquid.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (9)
1. The utility model provides an oil circuit hydraulic component's gas tightness performance detection device which characterized in that includes:
a workbench (1) and a positioning mechanism;
the liquid storage box body (2) is arranged on the workbench (1) and used for bearing detection liquid;
the positioning mechanism comprises:
a seal head (905) which is arranged opposite to the workbench (1);
a driving mechanism connected with the sealing end (905) and used for driving the sealing end (905) to horizontally move;
the central end of the sealing end (905) is provided with a through hole (907), and one side of the through hole (907) is connected with the air inlet mechanism and is used for introducing compressed air into the pipeline (8);
further comprises:
and the lifting mechanism is used for driving the pipeline (8) to be immersed in the detection liquid for detecting the tightness.
2. The air tightness detection device of the oil way hydraulic element according to claim 1, wherein the driving mechanism comprises a positioning frame (4) connected with a sealing end (905), a driving box body (5) is arranged on the workbench (1), a screw rod (502) is rotationally arranged in the driving box body (5), the screw rod (502) is fixedly connected with the output end of a first motor (501) arranged outside the driving box body (5), a nut (503) fixedly connected with the positioning frame (4) is arranged on the screw rod (502), and the sealing end (905) is arranged on the positioning frame (4).
3. The device for detecting the air tightness of the oil-way hydraulic component according to claim 1, wherein the air inlet mechanism comprises an air pump (302) arranged on the workbench (1), one side of the air pump (302) is connected with the air storage tank (3), and the other side is connected with a through hole (907) of a sealing end (905) on the corresponding side through an air pipe (301).
4. A device for detecting the air tightness of an oil-way hydraulic component according to claim 3, characterized in that the end face of the sealing end (905) is further provided with an annular groove (908), an annular sealing gasket (906) is movably embedded in the annular groove (908), and an air hole (909) communicated with the through hole (907) is formed in the wall of the annular groove (908).
5. The device for detecting the air tightness performance of the oil way hydraulic element according to claim 1, wherein the lifting mechanism comprises a limiting plate (6) arranged on the workbench (1), and an air cylinder (601) fixedly connected with the driving box body (5) is arranged on one side of the limiting plate (6).
6. The device for detecting the air tightness of the oil way hydraulic element according to claim 4, wherein the positioning mechanism further comprises a positioning plate (9) arranged on one side of the sealing end (905), a plurality of L-shaped limiting frames (902) are arranged on the periphery of the positioning plate (9) in an annular array, a screw (903) is arranged on the L-shaped limiting frames (902) in a spiral mode, and a limiting seat (904) is arranged on the screw (903) in a rotating mode towards the sealing end (905).
7. The device for detecting the air tightness of the oil way hydraulic element according to claim 6, further comprising a turnover mechanism, wherein the turnover mechanism comprises a rotary drum (910) fixedly connected with a sealing end (905), the other end of the rotary drum (910) is rotationally connected with a positioning frame (4), a limiting cylinder (703) in transmission connection with the rotary drum (910) through a belt (701) is arranged at the inner end of one side of the positioning frame (4), a limiting rod (702) in sliding connection with the limiting cylinder (703) is arranged at the inner end of the other side of the positioning frame (4), and the limiting rod (702) is in transmission connection with the rotary drum (910) through the belt (701).
8. The device for detecting the air tightness of the oil way hydraulic element according to claim 7, wherein a plurality of strip-shaped clamping grooves (705) are formed in an annular array on the inner end surface of the limiting cylinder (703), and a plurality of strip-shaped clamping seats (704) which are clamped with the strip-shaped clamping grooves (705) are correspondingly arranged on the outer end surface of the limiting rod (702).
9. The method for detecting the air tightness performance of the oil way hydraulic element is characterized by comprising the following steps of:
s1, a first motor (501) drives a screw rod (502) to rotate, a nut (503) drives a positioning frame (4) to move in the process of moving on the screw rod (502), and the positioning frame (4) synchronously drives a sealing end (905) to be embedded into a pipeline (8);
s2, starting an air cylinder (601), wherein the air cylinder (601) drives the driving box body (5) to move along the direction of the limiting plate (6) so that one half of the pipeline (8) is immersed in the detection liquid;
s3, starting an air pump (302), and conveying compressed air in the air storage tank (3) to a through hole (907) by the air pump (302) through an air pipe (301), and inputting the compressed air into a pipeline (8) through the through hole (907) under the action of pressure;
s4, starting a second motor (7) to drive one side rotary drum (910) to rotate, and driving the other rotary drum (910) to rotate by the one side rotary drum (910) through a belt (701), a limiting rod (702) and a limiting drum (703), so that a pipeline (8) is driven to rotate by the rotary drum (910) to realize angle adjustment;
s5, a inspector can judge whether the air tightness of the pipeline (8) is good or not based on whether bubbles appear in the inspection liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211557761.8A CN116358792A (en) | 2022-12-06 | 2022-12-06 | Device and method for detecting air tightness of oil way hydraulic element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211557761.8A CN116358792A (en) | 2022-12-06 | 2022-12-06 | Device and method for detecting air tightness of oil way hydraulic element |
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|---|---|
| CN116358792A true CN116358792A (en) | 2023-06-30 |
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| CN202211557761.8A Pending CN116358792A (en) | 2022-12-06 | 2022-12-06 | Device and method for detecting air tightness of oil way hydraulic element |
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| CN (1) | CN116358792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116818207A (en) * | 2023-08-30 | 2023-09-29 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
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2022
- 2022-12-06 CN CN202211557761.8A patent/CN116358792A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116818207A (en) * | 2023-08-30 | 2023-09-29 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
| CN116818207B (en) * | 2023-08-30 | 2023-12-08 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
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